Skocz do pozycji: 1.

Tytuł:

Investigations of engine exhaust gas emission with oxygen enriched mixture and high exhaust gas recirculation

Autorzy:

Mitianiec, W.
Śliwiński, K.

Powiązania:

https://bibliotekanauki.pl/articles/247231.pdf

Data publikacji:

2014

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

transport
combustion engine
EGR
oxygen enriched mixtures
emission

Opis:

The paper presents an explanation of the formation process of toxic exhaust gas components during combustion process of oxygen-enriched mixtures in SI engine. In order to explain this phenomenon the simulation process was carried out, in which the experimental data from dynamometer tests of the 4-stroke SI engine were used. The tests were done at different oxygen volumetric ratios and at increased exhaust gas recirculation ratios until the mixture of oxygen and exhaust gases has not contained any nitrogen. The EGR system was applied in order to decrease gas temperature in the cylinder. Simulation of engine combustion process with oxygen-enriched mixture and with different EGR ratios was carried out by using the program Kiva3v for calculation of full engine phenomena with simple combustion model. This combustion model took into account 10 kinetic and equilibrium chemical reactions. Both experimental and simulation test indicated nonlinear variation of mole fractions of carbon monoxide and carbon dioxide with increasing of oxygen amount in the charge from 21% to 32% by volume. The engine has higher emission of carbon monoxide and carbon dioxide in comparison to the emission of the engine filling with air-fuel mixture in normal conditions. The paper explains from chemical reactions point of view a non-linear change of CO and CO2 emission in a function of the charge oxygen mass ratio at constant oxygen excess ratio. The paper presents the graphs showing variations of emission and volumetric concentration of chosen chemical species in the charge in a function of crank angles and variation of the engine parameters at different EGR and oxygen ratios in the engine charge.

Źródło:

Journal of KONES; 2014, 21, 3; 235-243
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Exhaust gas toxicity problems in ship drives

Autorzy:

Kolanek, C.
Sroka, Z. J.
Walkowiak, W. W.

Powiązania:

https://bibliotekanauki.pl/articles/963451.pdf

Data publikacji:

2007

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

inland navigation
diesel engine
fuel cell
emission
standards

Opis:

The issues discussed in the article include exhaust gas emission, purity requirements and standards, methods of reducing the emission of harmful exhaust gas components, and alternative and future traction drive sources having the form of fuel cells. The discussion often refers to the situation of road transport, a subsystem which severely affects the environment and thus is obliged to intensify the search for solutions.

Źródło:

Polish Maritime Research; 2007, S 1; 46-52
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Dedicated exhaust gas recirculation in spark ignition engines

Autorzy:

Rehan, S.

Powiązania:

https://bibliotekanauki.pl/articles/103305.pdf

Data publikacji:

2017

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

exhaust gas recirculation
NOx emissions
spark ignition engines

Opis:

The impact of high levels of exhaust gas recirculation (EGR) has been well documented to decrease fuel consumption and reduce emissions of spark ignition engines. But there are also many limitations associated with this technology like EGR control and tolerance, which can reduce the potential efficiency improvements. A new concept called D-EGR has been presented in which the exhaust from a sub group of power cylinders is channeled back to the intake of all the cylinders. In this literature review both experimental and numerical analysis of this technology is shown. In the former case experiments were performed on 2.0 L PFI engine with gasoline as a fuel in part and high load conditions and the results show that at part loads the D-EGR engine can lead to lower Brake Specific Fuel Consumption, lower HC and CO emissions and higher brake thermal efficiency. At high load operations the results show improved combustion stability and superior knock tolerance. In the numerical studies it shows comparable thermal efficiency with conventional spark ignition (SI) engines and reduction in NOX emissions.

Źródło:

Advances in Science and Technology. Research Journal; 2017, 11, 2; 44-50
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Exhaust gas dose uniformity in modern diesel engines

Autorzy:

Krakowian, K.
Kaźmierczak, A.
Górniak, A.
Włostowski, R
Błasiński, T.

Powiązania:

https://bibliotekanauki.pl/articles/246875.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

EGR
exhaust gas recirculation (EGR)
environmental protection
NOx

Opis:

Currently, the environment protection challenges the designers and manufacturers of combustion engines due to the fact that the engine emits toxic compounds, which are hazardous to the life organisms. Increasingly strict regulations concerning emission of the exhaust gases forces application of the innovative technologies or improvement of the presently used. One of systems, which reduce the toxicity of the exhaust gases, is the Exhaust Gas Recirculation (EGR) system. This solution reverse part of the exhaust gases back into the manifold and mixes it with fresh inlet air. In consequence, the combustion temperature decreases. Less oxygen reacts with nitrogen and more connects with carbon and hydrogen. Presently there are two types of EGR system i.e. internal and external. In case of the first one part of the exhaust gases remains in the combustion chamber after the combustion but its construction is not complicated. The external EGR system uses one valve of the exhaust gas recirculation system located on the manifold. This location can result of the uneven portion of exhaust gases directed to the combustion chamber. In consequence, the decrease on the temperature is also uneven and therefore different portion of nitrogen oxide in the exhaust gases.

Źródło:

Journal of KONES; 2012, 19, 2; 259-262
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Marine engine exhaust gas emission aftertreatment system concept

Autorzy:

Myśków, J.
Borkowski, T.
Bludszuweit, M.
Frohlingsdorf, W.

Powiązania:

https://bibliotekanauki.pl/articles/247178.pdf

Data publikacji:

2011

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

marine diesel engine
exhaust emission
particulate matter
non-thermal plasma reactor

Opis:

In 2008 the International Maritime Organization - IMO decided to strengthen the requirements for new ships from 2011 - Tier II. However, for Emission Control Areas (ECAs), such as the Baltic Sea, stringent rules will apply from 1 January 2016 for new ships - Tier III. The new standards introduce restrictions on exhaust emissions from diesel engines - NOx and SOx. The paper presents proposal of new design an existing exhaust gas system of experimental marine diesel engine, which is situated in the Laboratory of Maritime Academy in Szczecin. The conception is due to meet to new environmental regulations. Arrangements of exhaust line, CFD model of the SCR reference plant, CFD model - inlet and outlet boundary conditions, pressure loss model for the catalytic elements, simulation results - streamlines, velocity distribution, reaction progress distribution ate presented in the paper as well design description of system of laboratory- 4-stroke and turbocharged engine. . The means of the reduction systems are based on conventional marine exhaust gas installation that includes noise silencer and soot-catcher. The after-treatment methods do not introduce significant changes in engine arrangement and operation. A new gas purifying system should be installed in the engine exhaust gas system.

Źródło:

Journal of KONES; 2011, 18, 4; 307-315
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Exhaust gas recirculation strategy in the hydrogen SI engine

Autorzy:

Szwaja, S.
Naber, J. D.

Powiązania:

https://bibliotekanauki.pl/articles/243087.pdf

Data publikacji:

2007

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

internal combustion engine
hydrogen
exhaust gas recirculation (EGR)

Opis:

It is known that Exhaust Gas Recirculation (EGR) can be successfully applied not only for reducing NOx content in exhaust gases but also for reduction of combustion knock in SI engines. From this point of view, EGR can be particularly effective for knock elimination in the hydrogen reciprocating engine. Additionally with the application of EGR, the H2-air combustion can be maintained at the stoichiometric ratio enabling highly efficient NOx reduction in catalytic converters. In this paper a strategy of estimating EGR for the naturally aspirated, hydrogen fuelled engine is explained. On the basis of this strategy, the closed loop control system of the EGR was built and was implemented for the single cylinder CFR engine. There is also an outline of the test bed and several examples of in-cylinder pressure courses recorded under various EGR percentages. Next, the impact of EGR on combustion knock in the hydrogen fuelled engine is presented. Finally, conclusions concerning EGR application for hydrogen combustion in the IC engine are presented. EGR calculation and control scheme, main diagram of EGR calculation, subroutine (Sub-block) for calculating the molecular weight of EGR gases, in-cylinder pressure traces for several EGR levels during hydrogen combustion in the CFR engine, the fluctuating component of in-cylinder pressure during hydrogen combustion with several levels of EGR, peak pressure of fluctuation component of in-cylinder pressure vs. EGR percentage are presented in the paper.

Źródło:

Journal of KONES; 2007, 14, 2; 457-464
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Measurement of exhaust gas emissions from miniature turbojet engine

Autorzy:

Gawron, B.
Białecki, T.

Powiązania:

https://bibliotekanauki.pl/articles/133535.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

combustion process
effect on environment
exhaust gas emission
miniature turbojet engine
proces spalania
wpływ na środowisko
emisja spalin
miniaturowe silniki turboodrzutowe

Opis:

This paper presents a methodology developed to measure exhaust gas emissions during operation of a miniature turbojet engine, using a laboratory test rig. The rig has been built for research and development works aimed at modelling and investigating processes and phenomena occurring in jet engines. The miniature jet engines, similarly to full–scale ones used commonly in air transport, are characterized by variable exhaust gas emissions, depending on engine operating parameters. For this reason, an attempt has been made to determine the characteristic features of miniature engine operation modes and to define the variability of operation parameters and exhaust gas emissions as a function of time. According to the authors, the preliminary tests allowed for defining specific profile of engine test, which enables proper measurement regarding exhaust gas emissions using the miniature jet engine. The paper also presents test results for Jet A-1 fuel, according to the used methodology.

Źródło:

Combustion Engines; 2016, 55, 4; 58-63
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Adaptive control of exhaust gas recirculation at nonroad vehicle diesel engine

Autorzy:

Bieniek, A.
Graba, M.
Lechowicz, A.

Powiązania:

https://bibliotekanauki.pl/articles/247302.pdf

Data publikacji:

2011

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

exhaust gas recirculation (EGR)
NOx emissions reduction
adaptive control
EGR valve

Opis:

At diesel engines with fuel direct injection, the problems with toxic exhaust compounds concern mainly nitrogen oxides (NOx) and Particulate Matter (PM). For reduction of the NOx's, the exhaust gases are feedback to the combustion chamber. This results with a lower combustion temperature and decrease the emission of NOx gasses. The mass of the recirculated gases cannot be too high because it might lead to an increase in the PM emission. In nonroad vehicle engine the component responsible for the exhaust gases recirculation is most a two state (open/close) EGR Valve. Another problem in this type of combustion engines is volatility of its ecological parameters during exploitation. The reasons are various operation conditions of the engine, fuel quality ect. So, according to the proposed solutions, the engine controller must track these variations. The mass of recirculated gasses must also be corrected. In the proposed solution the EGR valve is a prototype construction of an electronically controlled EGR. The openness of the valve is freely programmable and is controlled by adaptive algorithm saved in the ECU (Electronic Control Unit). As feedback signal to control the openness of EGR valve is used an NOx sensor placed at engine outlet pipe. The paper describe an control circuit of EGR Valve and include research results of nonroad vehicle diesel emissions (NOx and PM missions). The proposed adaptive control of EGR Valve shows potential to reduce especially NOx emissions in aspect to fulfill further emission regulation TIER/Euro

Źródło:

Journal of KONES; 2011, 18, 4; 11-18
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Signal filtering method of the fast-varying diesel exhaust gas temperature

Autorzy:

Puzdrowska, P.

Powiązania:

https://bibliotekanauki.pl/articles/133011.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

diesel engine
exhaust temperature
parametrical diagnostics
signal mathematical processing
silnik spalinowy
temperatura spalin
diagnostyka parametryczna

Opis:

The paper presents the problem of the impact of external distortions originating on laboratory test stands on the results of measurements of fast-varying diesel exhaust gas temperature. It has been stressed how significant the aspect of the test stand adaptation is during an experiment to ensure the smallest possible impact. This paper, however, focuses on the methods of mathematical processing of a signal recorded during experimental research of a real object. The most significant parameter requiring filtering is the fast-varying exhaust gas temperature in the engine exhaust channel. Methods of mathematical processing adequate to this type of distorted signal have been presented, particularly those that can be used in the Matlab environment and consisting in averaging of the obtained curves of temperature changes. The results of the application of these methods have also been presented on actual curves recorded during laboratory tests and their evaluation has been made.

Źródło:

Combustion Engines; 2018, 57, 4; 48-52
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Water - fuel microemulsions influence on fuel consumption and exhaust gas emissions

Autorzy:

Cienciała, M.
Haller, P.
Jankowski, A.
Kardasz, P.

Powiązania:

https://bibliotekanauki.pl/articles/244361.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion engine
diesel engine
microemulsion
fuel consumption
emissions

Opis:

Combustion in a diesel engine is a complex physicochemical process, changing the time at which the events take place simultaneously heat and mass transfer and chemical reactions. The development of internal combustion engines goes towards meeting the increasingly stringent requirements for toxic exhaust emissions, reducing fuel consumption and therefore reduce carbon emissions and protect the Earth's natural resources. The problem to solve in modern combustion engines is the emission of NOx. One way to reduce the emission of toxic NOx combustion engine power is water-hydrocarbon emulsions [1]. Research combustion engines water-hydrocarbon emulsions has been its tradition. So far, attempts were carried out using an emulsion obtained by a chemical. Emulsions of oil and water can be obtained by adding various detergents to prevent delamination of the oil and water. In this article, we consider the possibility of applying a mixture of water and oil as an alternative fuel used to power internal combustion engines used in heavy road transport. This work is preliminary work, also having to check whether this is the future direction of the work. The measurements of emissions of exhaust gases and fuel consumption. After analysing the test results confirmed that the improvement of the economic and environmental performance of modern diesel engines, it can be achieved by supplying synthetic diesel or gas oil water emulsions. It was found that the use of emulsion leads to a reduction of fuel consumption and NOx emissions.

Źródło:

Journal of KONES; 2013, 20, 3; 111-116
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Pomiary składu spalin silników spalinowych
Measurements of Engine Exhaust Gas Components

Autorzy:

Kwiatkowski, K.
Żółtowski, B.

Powiązania:

https://bibliotekanauki.pl/articles/360487.pdf

Data publikacji:

2005

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

ekologia
silniki spalinowe
toksyczne składniki spalin
OMiUO 2005
ecology
combustion engines
toxic components of exhaust gases

Opis:

W ostatnich latach cały wysiłek konstruktorów był skierowany na zmniejszenie emisji związków toksycznych wydalanych przez silniki spalinowe pojazdów. W pracy tej przedstawiono wpływ zmian stanu silnika (jakości procesu spalania oraz rozregulowań silników) na wzrost toksycznych składników spalin.
In the past years designers' efforts was directed into the reduction of toxic compounds produced by vehicle combustion engines. The paper introduces the influence of combustion engine process as well as putting out of combustion process order on growth of toxic compounds emission.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2005, 5 (77); 361-369
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Cigarette smoke or exhaust gas from waste incineration – where are more dioxins?

Autorzy:

Czerwińska, Justyna
Wielgosiński, Grzegorz

Powiązania:

https://bibliotekanauki.pl/articles/105774.pdf

Data publikacji:

2019

Wydawca:

Centrum Badań i Innowacji Pro-Akademia

Tematy:

polychlorinated dibenzo-p-dioxins
combustion
incineration plant
cigarette
polichlorowane dibenzo-p-dioksyny
spalanie
spalarnia śmieci
papieros

Opis:

In Poland, incineration is a relatively new method of waste treatment. Modern installations for waste incineration have two functions: they reduce the quantity (volume) of the waste and are a source of electricity and/or heat. During all combustion processes including waste incineration, polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCD/Fs) (well known as dioxins) are formed. These compounds are considered to be extremely dangerous for living organisms including human beings. Dioxins are formed in any process of combustion of solid and liquid fuels in the presence of chlorine, oxygen and organic matter at appropriate temperatures. Combustion processes also occur during cigarette smoking, which is also a source of dioxin emissions. Although smoking has been classified as a less important source of dioxins in the environment, it directly affects our health. This work’s aim is to determine and compare the degree of harmfulness caused by the amount of inhaled dioxins: cigarette smoking or living near a waste incineration plant. Based on literature and experimental data, the concentration of dioxins in cigarette smoke and exhaust gases generated by municipal waste incineration plants as well as number of dioxins absorbed per day by the body will be presented.

Źródło:

Acta Innovations; 2019, 31; 86-93
2300-5599

Pojawia się w:

Acta Innovations

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

The influence of non-cooled exhaust gas recirculation on the diesel engine parameters

Autorzy:

Cisek, J.

Powiązania:

https://bibliotekanauki.pl/articles/134037.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

diesel engine
exhaust gases
EGR
exhaust gas recirculation
silnik spalinowy
spaliny
recyrkulacja spalin

Opis:

This paper presents the results of the diesel engine research on the energy performance, components of exhaust gases and smoke and parameters related to the supply system for VW 1.9 TDI working in 2 modes: with standard, non-cooled EGR system, and without this system. All of measurements were carried out on the some engine speed – 2000 rpm (speed of maximum engine torque) and various engine loads. It was found that the serial engine control unit switches the EGR system off above 150 Nm engine load (Mo_max = 295 Nm). In this range of load the engine running with EGR is characterized by higher fuel consumption (lower total efficiency) ca. 5%, compared with engine without EGR. Concentration of NO_x in exhaust gases was lower up to 45% but, at the same time, exhaust gas smoke and concentration of carbon oxides were strongly increasing. It can be seen that EGR system increases the temperature (up to 110°C) and changes the composition of air-exhaust gas in the intake manifold. One of reason of this fact is self-changing start of injection. Additional effect of EGR is lower air pressure behind turbocharger, because the flow of exhaust gases (into EGR) is taken before the turbine.

Źródło:

Combustion Engines; 2017, 56, 4; 269-273
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Wpływ biokomponentów na skład spalin silnikowych
Impact of biocomponents on exhaust gas composition

Autorzy:

Galwas-Zakrzewska, M.
Makles, Z.

Powiązania:

https://bibliotekanauki.pl/articles/181199.pdf

Data publikacji:

2003

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

spaliny silnikowe
biopaliwa
emisja zanieczyszczeń
exhaust gases
biofuels
emission of pollutants

Opis:

Motoryzacja wprowadza do środowiska naturalnego wiele zanieczyszczeń. Według światowych wyliczeń transport jest źródłem 20% emitowanego do atmosfery ditlenku węgla. Udział ten będzie wzrastał w przyszłości w miarę rozwoju przemysłu motoryzacyjnego na świecie, opartego na konwencjonalnych paliwach. Nadzieją dla środowiska naturalnego, w tym także dla człowieka, jest wprowadzenie biopaliw, których wykorzystanie prawdopodobnie spowoduje spadek emisji zanieczyszczeń. W artykule przedstawiono wyniki badań związanych z wielkością emisji zanieczyszczeń w zależności od rodzajów paliw, z uwzględnieniem biopaliw.
Motorization, a product of our civilization, emits large amounts of pollutants into the environment. According to a world scenario, the transport sector is the source of 20% of the carbon dioxide released into the atmosphere. This share will increase with the development of the auto industry based on conventional fuels. Biofuels seem to be an opportunity both for us and for the natural environment. The use of biofuels will reduce contamination. In this paper we report the influence of biofuel additives on the composition of exhaust gases.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2003, 11; 10-13
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Pomiar stężenia rtęci całkowitej w spalinach
MEASUREMENTS OF TOTAL MERCURY IN EXHAUST GAS

Autorzy:

Łuszkiewicz, Dariusz
Jędrusik, Maria
Borovec, Karel
Pilař, Lukáš

Powiązania:

https://bibliotekanauki.pl/chapters/17855520.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

rtęć elementarna
rtęć utleniona
rtęć związana z popiołem

Opis:

W artykule przedstawiono problematykę wynikającą z konieczności wykonywania pomiarów rtęci w spalinach pochodzących ze spalania węgla. Wprowadzenie w życie zapisów zawartych w tzw. Konkluzjach BAT wprowadzają wymóg ciągłego monitoringu stężenia HgT w spalinach dla źródeł o mocy cieplnej powyżej 300 MWt. Dla źródeł o mocy >300 MWt wymagany jest pomiar stężenia rtęci w spalinach 4 razy w roku. W pracy przedstawiono wyniki pomiarów stężenia rtęci w spalinach wykonane za pomocą metody manualnej (Ontario-Hydro) i systemem do ciągłego monitoringu emisji. Pomiary wykonano w kanale spalin za elektrofiltrem dla obiektu z kotłem fluidalnym zasilanym różnymi paliwami (węglem kamiennym, brunatnym oraz ich mieszaniną).
The article presents the problems resulting from the need to perform mercury measurements in combustion gases from coal combustion. Implementation of the provisions contained in the so-called BAT concatenations introduce a requirement for continuous monitoring of HgT concentration in flue gas for sources with thermal power above 300 MWt. For sources with a capacity >300 MWt, mercury concentration in flue gas is required 4 times a year. The paper presents results of mercury concentration measurements in the flue gases made using the manual method (Ontario-Hydro) and the system for continuous emission monitoring. The measurements were made in the exhaust duct after the electrostatic precipitator for the object with a fluidized bed boiler fed with various fuels (hard coal, lignite and their mixture).

Źródło:

Aktualne problemy w inżynierii i ochronie atmosfery; 119-127
9788374930208

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Improved system of the water level controling in the smoke-tube exhaust gas boiler

Autorzy:

Tuński, T.

Powiązania:

https://bibliotekanauki.pl/articles/360206.pdf

Data publikacji:

2013

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

“Super Slow Steaming”
de-rated engine
steam production

Opis:

There were many changes of ways of operation of low-speed long-stroke marine Diesel engines powering ships introduced last years. Their range of continuous low load operation has been significantly extended. That changes exerted a great influence on operating condition of equipment connected with engines, particularly waste heat boilers. The bellow paper deals with adjustment of water level in smoke – tube exhaust gas boiler depending on real operating condition of the ship powered by the marine slow-speed longstroke Diesel engine operated under the “Super Slow Steaming” program.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 35 (107); 149-153
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Combustion control in gasoline HCCI engine with direct fuel injection and exhaust gas trapping

Autorzy:

Hunicz, J.

Powiązania:

https://bibliotekanauki.pl/articles/246912.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

homogeneous charge compression ignition
variable valve timing
negative valve overlap
gasoline
direct injection

Opis:

Homogeneous charge compression ignition (HCCI) seems to be the most promising solution for gasoline engines in the light of future emissions regulations. This novel combustion technique allows for significant reduction of fuel consumption and engine-out NOX emissions at low and medium engine load/speed conditions. High heat release rate enables realization of the Otto cycle close to ideal, increasing thermal efficiency. Among different approaches to invoke an auto-ignition of air-fuel mixture, exhaust gas trapping with the use of a negative valve overlap is under intensive investigations. The paper presents research results ofcontrolling an auto-ignition and combustion phasing in a single cylinder gasoline engine with direct fuel injection operated in the negative valve overlap mode. The experiments were performed at variable valvetrain settings, providing a control of EGR rate and volumetric efficiency. Additionally, the combustion process was investigated at variable air-fuel ratio. It was found that volumetric efficiency and EGR ratę are mainly dependent on exhaust valve timing, while a timing of intake valve determined combustion on-set and its duration. The effects of EGR rate and air-fuel ratio on combustion timing and exhaust gas emissions were isolated. The direct fuel injection showed its benefits versus mixture formation outside the cylinder. The application of variable injection timing provided additional possibility to control the combustion timing and exhaust emissions. However, it was found that the fuel injection strategy should be related to the engine load conditions.

Źródło:

Journal of KONES; 2010, 17, 2; 137-144
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Research on influence of some ship diesel engine malfunctions on its exhaust gas toxicity

Autorzy:

Krzyżanowski, J.
Witkowski, K.

Powiązania:

https://bibliotekanauki.pl/articles/259445.pdf

Data publikacji:

2004

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

ochrona powietrza
emisja tlenku azotu
testy laboratoryjne
atmosphere protection
emission of nitric oxides
laboratory test

Opis:

This paper is a continuation of the previous articles of the authors, published in Polish Maritime Research [1, 2], devoted to pollution of the atmosphere due ship diesel engines in operation. In the paper presented are results of the investigations carried out in the Gdynia Maritime Academy laboratory with the use of a ship one-cylinder diesel engine combusting heavy fuel oil. Two its possible malfunctions: changes of fuel injection pressure and changes of injection advance angle were simulated. Both malfunctions, which might occur as a result of incorrect engine regulation or wearing or contamination of engine elements, were simulated separately. The presented investigations were focused on finding out relationships between the assumed malfunctions and exhaust gas content, especially content of nitric oxides (NOx), very toxic compoŹunds. The paper is ended by several conclusions arising from analysis of the results which have - apart from their cognitive merits - also an utilitarian character as they may be put into practice by ship operators, provided that some limitations resulting from the specific conditions of the reported laboratory investigations are appropriately taken into account.

Źródło:

Polish Maritime Research; 2004, 1; 24-26
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Combustion temperature and exhaust gas composition in si engine fuelled with gaseous hydrocarbon fuels

Autorzy:

Flekiewicz, M.
Kubica, G.

Powiązania:

https://bibliotekanauki.pl/articles/243947.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

transport
road transport
simulation
combustion engines
air pollution
environmental protection

Opis:

This paper presents the issues connected with the process of combustion of natur al gas and methane-hydrogen blend in SI engine. Enriching methane with hydrogen is the way to make the combustion process more efficient and gives possibilities of CO 2 emission reducing. The detailed analysis focused on changes in temperature profile and their impact on thermal charge and composition of the emitted exhaust gas. All the range of investigation is divided into threeparts. First part is dedicated to comparison of combustion temperatures of LPG, CNG and Petrol. In the middle part are presented the results of investigation of influence ignition advance on combustion temperatures of CNG. The third part includes the results of research project aimed at opportunities of efficient combustion of gaseous fuels, whose main constituent is methane. The selected group of fuels included: CNG, and methane-hydrogen blends (with volumetric hydrogen shares - 5%, 10%, 15%, 20% and 30%). The tested engine was an Opel Astra naturally aspirated four-cylinder 1.6 l petrol engine with power output of 55 kW at 5200 rpm and torque of 128 Nm at 2600 rpm. This engine was modified in a way allowing its CNG propulsion without compression ratio variations. The investigations were carried out on chassis dynamometers and were the basis for analysis by means of mathematical simulation model, in this paper. The obtained results were compared to measurements for fuelling with unleaded petrol (95-octane) as a base fuel for this drive unit. Fuelling of engine with blend of methane and hydrogen opens up opportunities for considerable reduction in CO 2. For blend contains 30% of hydrogen the emission of CO 2 was 35% lesser than in petrol case.

Źródło:

Journal of KONES; 2010, 17, 3; 105-111
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Study on seawater scrubbing for SO2 removal from ships power plant exhaust gas

Autorzy:

Ma, Yiping
Xu, Leping
Su, Penghao
Feng, Daolun
Yang, Kailiang

Powiązania:

https://bibliotekanauki.pl/articles/207540.pdf

Data publikacji:

2020

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

sulfur dioxide
absorption
seawater
dwutlenek siarki
adsorpcja
woda morska

Opis:

The mechanism of SO₂ absorption in seawater is investigated, and the experiment was carried out accordingly. Emphasis is on applications of seawater scrubbing of ship’s power plant exhaust gas containing SO₂. The formulated model is used to predict the influence of various parameters on both pH of tailwater and seawater desulfurization capability, e.g., the partial pressure of SO₂, the partial pressure of CO₂, tailwater temperature, pH and alkalinity of seawater. Experiment results indicated that the seawater desulfurization capacity increases with both increasing partial pressure of SO₂, pH and alkalinity and decreasing partial pressure of CO₂ and temperature. The study shows the desulfurization capacity of seawater with 3.5% salinity is approximately twice that of freshwater. Different scenarios in which the required absorbent supply rate for a given SO₂ removal efficiency are studied. It is observed a 97% removal efficiency, corresponding to meeting the SO_x limits in the SO_x emission control areas (SECA) while operating on a heavy fuel oil containing sulfur 3.5 wt. %, requires a minimum water supply rate of 0.0407–0.0683 m³/kWh, depending mainly on the water composition in terms of alkalinity and salinity. Such data are important in assessing the operation cost of the water scrubbing system.

Źródło:

Environment Protection Engineering; 2020, 46, 1; 31-47
0324-8828

Pojawia się w:

Environment Protection Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

A new design of wet scrubber for removal of fine particles from exhaust gas

Autorzy:

Liao, B.
Juang, S. H.
Lin, H.

Powiązania:

https://bibliotekanauki.pl/articles/208160.pdf

Data publikacji:

2016

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

cleaning methods
filter surface
solid particles
Venturi scrubber
combustion gases
płuczka Venturiego
cząstki stałe
metody oczyszczania
gazy spalinowe

Opis:

Bag-house dust collectors are commonly used in the industry for removing solid particles from dust laden gas. Bag house filter media need to be periodically cleaned in order to remove accumulated particles from the filter surface. Pulse jet cleaning is the most common cleaning method but produces noise increment of about 30-40 dB, which is its major disadvantage. The present study reports on a new type of combined wet scrubber-Venturi scrubber in the shape of a cyclone. The proposed design eliminates the noise associated with the pulse jet filter-cleaning process and filter bag replacement costs. The experimental results were demonstrated with high efficiency in the design.

Źródło:

Environment Protection Engineering; 2016, 42, 1; 59-70
0324-8828

Pojawia się w:

Environment Protection Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Impact of low-temperature corona discharges on gaseous pollutants level in diesel engines exhaust gas

Autorzy:

Irzycki, A.
Kalina, P.
Snopkiewicz, K.

Powiązania:

https://bibliotekanauki.pl/articles/246916.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

exhaust gas
plasma reactor
emissions of gaseous toxins
experimental study

Opis:

This publication presents the results of research on level changes of gaseous pollutants contained in the exhaust gas in the consequence of applying of equipment taking advantage of low-temperature corona discharges. Not only influence of different plasma reactor configurations on the emission of toxins have been evaluated, but also on the main parameters of the engine under test and exhaust gas cleaning efficiency as well. The device supplied by DC voltage of 10-15 kV the operating value generated a low-temperature corona discharge in the especially formed electrostatic field. The devices were located behind the exhaust manifold of Diesel engine then operated in the high temperature zone of exhaust. The survey was realized in parallel with on-going research program at Institute of Aviation which has related to purification of Diesel engine's exhaust gas from particulates. The test results of emission of toxins obtained using the flat-arrangement and the axial-symmetric reactor systems were compared and discussed. The multi-variant designs of axial-symmetric device allowed the purposeful formation of favourable shape and intensity of electrostatic field and values of current, which induced the corona discharge. This activity has created better research capabilities for different geometric configurations of the reactors, namely linear and angular location and size of deflecting electrodes, structure of blade assembly generating a corona discharge, matching of proper distance between deflecting electrodes and blades.

Źródło:

Journal of KONES; 2010, 17, 2; 145-152
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Impact of late and early fuel injection on main engine efficiency and exhaust gas emissions

Autorzy:

Pavin, Z.
Knezević, V.
Orović, J.
Valčić, M.

Powiązania:

https://bibliotekanauki.pl/articles/24201477.pdf

Data publikacji:

2023

Wydawca:

Uniwersytet Morski w Gdyni. Wydział Nawigacyjny

Tematy:

late injection
early injection
main engine
fuel efficiency
fuel filter blockage
exhaust gas emissions
simulator
LCC

Opis:

Exhaust gas emissions from ships are an aspect of the global maritime industry which has been given great importance in recent years. Increasing the efficiency of maritime transport regarding fuel consumption and exhaust gas emissions is an ongoing effort which requires a detailed analysis of all ship systems that have an effect on the aforementioned issue. One aspect that can be analyzed in this regard are the various machinery faults which influence the ships exploitation efficiency. This paper will focus on the analysis of the two stroke slow speed diesel main engine with early and late fuel injection faults. This analysis is based on a set of data acquired from a simulation model of a LCC tanker vessel including fuel consumption and emission pollutants such as carbon monoxide (CO), sulphur oxides (SOX) and carbon dioxide (CO2) as a greenhouse gas with early and late fuel injection fault introduced to different number of main engine cylinders. This methodology of research has the advantage of analyzing various scenarios which are not as easily reproduced on actual vessels.

Źródło:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 177--181
2083-6473
2083-6481

Pojawia się w:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Procedures and treatments leading to reduction of toxic components emission in diesel engines exhaust gas

Autorzy:

Kalina, P.
Irzycki, A.
Snopkiewicz, K.

Powiązania:

https://bibliotekanauki.pl/articles/248119.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
pollution
reduction of emission

Opis:

The fight against global warming and Earth atmosphere pollution has been for years one of the most important tasks of governments and national economies of the European Union members. Abandonment of efforts leading to reduction mainly of carbon dioxide emission by heavy industry, electric power generation based on coal, passenger aviation and wheeled passenger transport will inevitably be leading to deterioration of health condition of our citizens. This article presents an overview of commonly used structural and technological treatments which have impact on reduction of toxic standardized exhaust pollutants in the surface transport, exemplified on SW 400 engine version of L2 / 3 and its turbocharged version 6CT 107 2/L2. The impact of: engine's adjustment parameters, catalytic afterburners, exhaust gas recirculation, modifications of injectors, turbochargers, supercharging air-cooling and particulates filter on carbon monoxide, hydrocarbons, nitrogen oxides and particulates emission was thoroughly examined. The parameters being compared were the results of toxicity tests according to ECE-R49 Regulation and a maximal smoke values on full-load characteristics. In conclusion, of the paper the limiting allowable values of toxic components emitted in Diesel engines exhaust gases in the following EU Emission Standards are presented.

Źródło:

Journal of KONES; 2012, 19, 1; 163-169
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Benefits of exhaust gas energy for preheating biodiesel fuel to enhance engine emissions and performance

Autorzy:

Mourad, Mohamed
Noureldenn, Elsadek H.

Powiązania:

https://bibliotekanauki.pl/articles/95247.pdf

Data publikacji:

2019

Wydawca:

Politechnika Koszalińska. Wydawnictwo Uczelniane

Tematy:

biodiesel production
preheating
engine emissions
performance
produkcja biodiesla
podgrzewanie wstępne
emisja spalin
wydajność

Opis:

The need for alternative fuel instead of conventional fossil fuels (diesel or gasoline) has recently increased for several reasons, including the expected shortage of petroleum fossil fuels and the production of pollution by transportation. Consequently, researchers are interested in finding new alternative fuels. At present, the number of studies on biodiesel as a compression ignition engine fuel has increased. Current studies are mainly concerned with studying the use of exhaust gas temperature to preheat biodiesel fuel before it enters the combustion chamber. A heat exchanger is designed to increase the temperature of the biodiesel fuel prior to the combustion process. The performance characteristics of diesel engines and the emission of pollutants resulting from this modification were investigated under different operating conditions, including different engine loads and speeds. The results showed clear improvements in engine performance, including improved output power, specific fuel consumption and pollutant emissions. The engine power and specific fuel consumption improvements as a result of preheating reached up to 1.3% and 8.27%, respectively. Pollutant emission also decreased obviously, with carbon monoxide and hydrocarbon emission decreases of 12.95% and 12.85%, respectively. However, the emission of nitrogen oxides increased by 4.39%.

Źródło:

Journal of Mechanical and Energy Engineering; 2019, 3, 2; 157-167
2544-0780
2544-1671

Pojawia się w:

Journal of Mechanical and Energy Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Influence of exhaust gas recirculation on the ignition delay in supercharged compression ignition test engine

Autorzy:

Tutak, W.

Powiązania:

https://bibliotekanauki.pl/articles/410893.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Oddział w Lublinie PAN

Tematy:

opóźnienie zapłonu
spalanie
modelowanie matematyczne
silnik
ignition delay
combustion
mathematical modelling
engine

Opis:

The results of analysis of thermal cycle of the test engine are presented in the paper. The study focused on determining the ignition delay in compression ignition engine. The correlations available in literature, Hardenberg and Hase, Wolfer and Watson and Assanis were used to determine ignition delay. With the increase of the EGR the ignition delay has increased. It turned out that very often it is necessary to determine own ignition delay correlation.

Źródło:

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2012, 1, 2; 57-62
2084-5715

Pojawia się w:

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines. Part II. Unsteady processes

Autorzy:

Korczewski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/260604.pdf

Data publikacji:

2011

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

technical diagnostics
naval turbine engines
exhaust gas temperature
unsteady processes
unstable

Opis:

The second part of the article presents the results of operating diagnostic tests of a two- and three-shaft engine with a separate power turbine during the start-up and acceleration of the rotor units. Attention was paid to key importance of the correctness of operation of the automatic engine load control system, the input for which, among other signals, is the rate of increase of the exhaust gas flow temperature. The article presents sample damages of the engine flow section which resulted from disturbed functioning of this system. The unsteady operation of the compressor during engine acceleration was the source of excessive increase of the exhaust gas temperature behind the combustion chamber and partial burning of the turbine blade tips.

Źródło:

Polish Maritime Research; 2011, 3; 37-42
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Exhaust gas temperature measurements in diagnostics of turbocharged marine internal combustion engines. Part II Dynamic measurements

Autorzy:

Korczewski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/258840.pdf

Data publikacji:

2016

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

diagnostic
internal combustion engine
exhaust gas temperature

Opis:

The second part of the article describes the technology of marine engine diagnostics making use of dynamic measurements of the exhaust gas temperature. Little-known achievements of Prof. S. Rutkowski of the Naval College in Gdynia (now: Polish Naval Academy) in this area are presented. A novel approach is proposed which consists in the use of the measured exhaust gas temperature dynamics for qualitative and quantitative assessment of the enthalpy flux of successive pressure pulses of the exhaust gas supplying the marine engine turbocompressor. General design assumptions are presented for the measuring and diagnostic system which makes use of a sheathed thermocouple installed in the engine exhaust gas manifold. The corrected thermal inertia of the thermocouple enables to reproduce a real timehistory of exhaust gas temperature changes.

Źródło:

Polish Maritime Research; 2016, 1; 68-76
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Exhaust gas temperature measurements in diagnostics of turbocharged marine internal combustion engines Part I standard measurements

Autorzy:

Korczewski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/259776.pdf

Data publikacji:

2015

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

diagnostic
internal combustion engine
exhaust gas temperature

Opis:

The article discusses the problem of diagnostic informativeness of exhaust gas temperature measurements in turbocharged marine internal combustion engines. Theoretical principles of the process of exhaust gas flow in turbocharger inlet channels are analysed in its dynamic and energetic aspects. Diagnostic parameters are defined which enable to formulate general evaluation of technical condition of the engine based on standard online measurements of the exhaust gas temperature. A proposal is made to extend the parametric methods of diagnosing workspaces in turbocharged marine engines by analysing time-histories of enthalpy changes of the exhaust gas flowing to the turbocompressor turbine. Such a time-history can be worked out based on dynamic measurements of the exhaust gas temperature, performed using a specially designed sheathed thermocouple. The first part of the article discusses possibilities to perform diagnostic inference about technical condition of a marine engine with pulse turbocharging system based on standard measurements of exhaust gas temperature in characteristic control cross-sections of its thermal and flow system. Selected metrological issues of online exhaust gas temperature measurements in those engines are discusses in detail, with special attention being focused on the observed disturbances and thermodynamic interpretation of the recorded measuring signal. Diagnostic informativeness of the exhaust gas temperature measurements performed in steady-state conditions of engine operation is analysed in the context of possible evaluations of technical condition of the engine workspaces, the injection system, and the fuel delivery process.

Źródło:

Polish Maritime Research; 2015, 1; 47-54
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

The effect of exhaust gas recirculation on the process of combustion in the self-ignition engine

Autorzy:

Ambrozik, T.
Kosno, M.

Powiązania:

https://bibliotekanauki.pl/articles/950109.pdf

Data publikacji:

2014

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

exhaust gas recirculation (EGR)
diesel engine
start of combustion
nitrogen of oxides

Opis:

The paper compares the basic parameters of the process of combustion in the Fiat MultUet 1.3 SDE 90 KM with and without an exhaust gas recirculation system, running according to load characteristics with the following engine crankshaft rotational speeds: n=l200 ipm, 1750 rpm and 3000 rpm. During testing, the engine was supplied with commercial diesel oil. The tested engine was provided with external exhaust gas recirculation consisting in supplying a specific amount of exhaust gas back to the cylinder via an EGR electric solenoid valve. The exhaust gas delivered to the cylinder was cooled. Exhaust gas is composed of inert gases that do not take part in the combustion process. This causes, above all, a lower rate of pressure increase in the cylinder and a lower heat release rate. Thanks to exhaust gas recirculation, lower maximal temperatures prevail in the cylinder, and the engine's operation is "softer." During experimental testing, the variation of cylinder pressure and chamber pressure, the injector operation control current magnitude, effective power, torque and the hourly fuel consumption, as well as the exhaust gas recirculation rate. Actual indicator diagrams plotted were used for determining the heat release characteristics, based on which the percentage fractions of the burned out fuel charge injected during one engine running cycle namely 5, 10, 50 and 90% fractions were determined. In addition, the indicator indices were determined. The paper has demonstrated the effect of exhaust gas recirculation on the processes occurring inside the cylinder in the self ignition internal combustion engine.

Źródło:

Journal of KONES; 2014, 21, 2; 7-14
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Influence of exhaust gas on detonation propensity of a mixture of carbon monoxide, hydrogen and air

Autorzy:

Jach, A.
Teodorczyk, A.

Powiązania:

https://bibliotekanauki.pl/articles/241895.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

detonation propensity
syngas
χ
RSB
detonation cell width
exhaust gas
combustion products

Opis:

A detonation is the strongest form of all gas explosions. The ease with which a flammable mixture can be detonated (detonability) commonly and traditionally is classified by a detonation cell width λ and an ignition delay time behind the detonation leading shock τ. Additionally, two more parameters were proposed 3 years ago – χ and RSB, which inform about regularity of a detonation structure. The problem of a detonation is significant in industry, in particular in power engineering, where restricted emission standard impose to introduce hydrogen-rich fuels, such as syngas. The most possible initiation of a detonation in industrial conditions is deflagration to detonation transition (DDT), where a deflagration under some conditions (obstacles, confinement, etc.) accelerates and a transition to a detonation takes places. In industry, this acceleration of a flame may progress in initially smoke-filled space. The goal of this paper is to analyse influence of exhaust gas on detonation propensity of a mixture of carbon monoxide and hydrogen. The analysis concerns the detonation cell width λ, ignition delay time τ, RSB and χ parameters. The composition of exhaust gas is calculated by setting it to a state of chemical equilibrium. Combustion temperature influence on exhaust gas composition is assessed. Species, which have the strongest influence on detonability, are assessed. Computations are performed with the use of Cantera tool.

Źródło:

Journal of KONES; 2016, 23, 2; 155-161
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Silniki spalinowe źródłem szkodliwych składników spalin
Combustion engines as the source of exhaust gas harmful components

Autorzy:

Kwiatkowski, K.
Żółtowski, B.

Powiązania:

https://bibliotekanauki.pl/articles/328612.pdf

Data publikacji:

2004

Wydawca:

Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN

Tematy:

ekologia
silniki spalinowe
toksyczne składniki spalin
ecology
combustion engines
toxic components
exhaust gas

Opis:

W ostatnich latach cały wysiłek konstruktorów był skierowany na zmniejszenie emisji związków toksycznych wydalanych przez silniki spalinowe pojazdów. W pracy tej przedstawiono wpływ zmian stanu silnika (jakości procesu spalania oraz rozregulowań silników) na wzrost toksycznych składników spalin.
Last years whole constructors' effort was directed into reduction of toxic compounds emission, voided by vehicles combustion engines. The paper introduces the influence of combustion engine process as well as putting out of combustion process order on growth of toxic compounds emission.

Źródło:

Diagnostyka; 2004, 32; 71-76
1641-6414
2449-5220

Pojawia się w:

Diagnostyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Stechiometryczne uwarunkowania oraz skutki realizacji recyrkulacji spalin
Stoichiometric conditions and effects of the exhaust gas recirculation

Autorzy:

Postrzednik, S.
Żmudka, Z.
Przybyła, G.

Powiązania:

https://bibliotekanauki.pl/articles/134065.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

silnik spalinowy
recyrkulacja spalin
stosunek tlenu
uwarunkowania stechiometryczne
combustion engine
exhaust gas recirculation (EGR)
oxygen content
excess
stoichiometric conditions

Opis:

Zasadniczym celem stosowania recyrkulacji spalin jest obniżenie temperatury spalania mieszanki palnej, poprzez wzrost względnej pojemności cieplnej czynnika roboczego. Do ilościowego ujęcia recyrkulacji wykorzystano pojęcia: stopień R, krotność K recyrkulacji spalin oraz jej wartość względna W. Analiza dotyczy stechiometrycznych skutków recyrkulacji: udziału tlenu [O₂]_d w mieszaninie gazów dopływających do komory spalania, efektywnego λ _ef stosunku nadmiaru tlenu oraz tzw. wewnętrznego stosunku nadmiaru tlenu λ_w, w którym uwzględnia się tlen dostarczany ze strumieniem recyrkulujących spalin. Dzięki przeprowadzonej analizie uwarunkowań i skutków recyrkulacji okazało się, ze wzrostem stopnia recyrkulacji systematycznie zmniejsza się udział [O₂]_d tlenu w mieszance palnej, a jednocześnie obserwuje się wzrost wewnętrznego stosunku nadmiaru tlenu λ _w. Ustalone współzależności wpływają istotnie na parametry (ciśnienie p, temperaturę T) obiegu silnika, pozyskiwaną pracę mechaniczną oraz sprawność energetyczną, a także na emisję substancji szkodliwych.
The main goal of EGR is to decrease the combustion temperature of the combustible mixture by increasing the relative heat capacity of the working medium. An additional effect is to reduce the oxygen content in the gas mixture flowing into the combustion chamber. The analysis concerns the effective oxygen excess ratio λ _ef in the combustible mixture and the so-called internal oxygen excess ratio λ_w, which additionally takes into account the supplied oxygen with the recirculation stream. It was found that with increasing of the exhaust gas recirculation degree systematically decreases the content of the oxygen [O₂]_d in the combustible mixture, while increases the oxygen excess ratio λ _ef observed in the exhaust gases. Changes of this all parameters influence the achieved specifaic work, energy efficiency and emission of the combustion engine.

Źródło:

Combustion Engines; 2013, 52, 3; 379-382
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Techniczno-eksploatacyjne aspekty redukcji emisji SOx na statkach
Operational Problems of Exhaust Gas Desulphurization on Ships

Autorzy:

Kidacki, G.
Krause, P.
Rajewski, P.

Powiązania:

https://bibliotekanauki.pl/articles/359447.pdf

Data publikacji:

2006

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

ochrona środowiska
EXPLO-SHIP 2006
zanieczyszczenie powietrza
emisja SOx
odsiarczanie spalin na statkach
environment protection
air pollution
SOx emission
ship's exhaust gas desulphurization

Opis:

Nowe wymagania aneksu VI Konwencji Marpol 73/78 i dyrektywy 2005/33/EC, zmniejszające dopuszczalne limity zawartości związków siarki w spalinach siłowni okrętowych, wchodzą w życie w 2006 roku. Emisja SOx w spalinach może być ograniczona przez redukcję zawartości siarki w paliwie lub przez zastosowanie metod odsiarczania spalin. W artykule przedstawiono dostępne metody odsiarczania spalin ze spalania paliw wysokosiarkowych, problemy związane z eksploatacją instalacji odsiarczania i ograniczenia pojawiające się na skutek braku szczegółowych regulacji prawnych oraz pierwsze doświadczenia z rzeczywistymi instalacjami odsiarczania spalin, szczególnie od strony ekonomicznej.
New requirements of Marpol, Annex VI and Directive 2005/33/EC imposing the reduction of SOx emission in ship's exhausts gas enter into force in 2006. The emission of SOx can be reduced by the limitation of sulphur quantity in fuel or by means of exhaust gas desulphurization methods. The authors deal with available desulphurization methods of exhaust gases as a result of high sulphur fuel burning. Besides, problems of the operation of desulphurization installations and present limitations due to the lack of detailed regulations are discussed. Furthermore, first experiences with real desulphurization systems, especially in terms of economy, are presented.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2006, 10 (82); 245-258
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Investigation into particulate size distributions in the exhaust gas of diesel engines fuelled with biodiesel blends

Autorzy:

Chuepeng, S.
Theinnoi, K.
Xu, H. M.
Wyszynski, M. L.
York, A. P. E.
Hartland, J. C.
Qiao, J.

Powiązania:

https://bibliotekanauki.pl/articles/248072.pdf

Data publikacji:

2008

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

biodiesel
PM
combustion
diesel
PM size distribution

Opis:

Particulate matter (PM) size distributions in the exhaust gas of biodiesel blend fuelled diesel engines have been studied by experimenting firstly on a single cylinder equipped with a pump-line-injector injection system and secondly for comparison on a V6 DI engine equipped with a common rail fuel injection system. Both engines were operated with a biodiesel (RME) blend of B30 and ultra low sulphur diesel fuel (ULSD). Several engine load conditions with and without exhaust gas recirculation (EGR) were selected. Particulate number concentrations vs. the electrical mobility equivalent diameter were examined using a fast differential mobility spectrometer. The effect of engine operating conditions including EGR rates on particulate emissions has been investigated. It is found that PM sizes from combustion of B30 without EGR operation are generally smaller than those from ULSD while number concentrations are higher. This can result in lower PM mass estimates for the B30 case if due care is not taken. When EGR is applied to control nitrogen oxides emissions, both the total PM number and mass are increased and shifted toward the larger sizes for both fuels used in the test. The calculated total PM mass from B30 combustion is lower than in the ULSD case for all the tested engine operating conditions.

Źródło:

Journal of KONES; 2008, 15, 3; 75-82
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines. Part I. Steady-state processes

Autorzy:

Korczewski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/258576.pdf

Data publikacji:

2011

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

technical diagnostics
naval turbine engines
exhaust gas temperature
steady-state processes

Opis:

The article presents a possible method of detecting failures in the flow section and supply system of a naval gas turbine engine based on the exhaust gas temperature measured behind the gas generator. This temperature is a basic diagnostic parameter use for evaluating the technical state of the turbine engine in operation, and is monitored during engine start-ups, accelerations and decelerations of rotor units, and steady-load states. ABSTRACT The first part of the article is limited to the presentation of the results of diagnostic examination of a threeshaft engine with a separate power turbine, operating in steady-load states. The here presented diagnostic analyses and syntheses based on a simplified mathematical model of thermal and flow processes taking place in the combustion chamber, which was used for deriving the equation describing the average steadystate temperature of the exhaust gas flow at the outlet cross-section of the chamber.

Źródło:

Polish Maritime Research; 2011, 2; 37-43
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

An artifical neural network usage in measurement of exhaust gas emission from marine engines: case study

Autorzy:

Kowalski, J.
Rudzki, K.

Powiązania:

https://bibliotekanauki.pl/articles/2073611.pdf

Data publikacji:

2016

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

marine engine
emission
neural network
measurement
power approximation
silnik okrętowy
emisja
sieć neuronowa
pomiar

Opis:

The paper presents the case study of use the artificial neural network to predict the main propulsion marine engine load. Mentioned load of the engine is important parameter to assess the emission level of toxic compounds into the atmosphere according to ISO standard and MARPOL convention. The engine load depends on the ship speed, rotational speed of the engine, propeller blades settings, the direction and the speed of wind, the condition of sea and the direction and the speed of sea currents and construction parameters of the ship. The realization of the aim of the work requires the direct measurement of presented parameters and measurement of exhaust gas composition. The experiment was carried out onboard STS “Pogoria”. Obtained results are enough to use the ANN to predict engine load to measure the emission level of toxic compounds.

Źródło:

Journal of Polish CIMEEAC; 2016, 11, 1; 87--93
1231-3998

Pojawia się w:

Journal of Polish CIMEEAC

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Problemy emisji spalin ze specjalnych pojazdów szynowych
Problems of exhaust gas emission from special rail vehicles

Autorzy:

Marciniak, Zygmunt
Stawecki, Włodzimierz
Pielecha, Ireneusz
Pielecha, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/34655853.pdf

Data publikacji:

2011

Wydawca:

Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny

Tematy:

pojazd szynowo-drogowy
emisja składników gazowych
emisja cząstek stałych

Opis:

W artykule przedstawiono analizę ekologiczną specjalnych pojazdów szynowych na przykładzie ciągnika szynowo-drogowego. Przedstawiono wyniki pomiarów emisji składników gazowych oraz cząstek stałych w rzeczywistych warunkach ruchu tego pojazdu. Zaproponowano możliwości zastąpienia lokomotyw manewrowych przez pojazdy szynowo-drogowe.
An ecological analysis of special rail vehicles on the example of the rail-road tractor is presented in this article. The results of measurements of gaseous constituents and particulate emission in real traffic conditions of this vehicle are presented. It is suggested the possibilities of replacing the shunting locomotives with these rail-road vehicles.

Źródło:

Rail Vehicles/Pojazdy Szynowe; 2011, 2; 25-29
0138-0370
2719-9630

Pojawia się w:

Rail Vehicles/Pojazdy Szynowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Research of Nitrogen Oxides Concentrations in Exhaust Gas of Compression Ignition Engine Fuelled with Alternative Fuel

Autorzy:

Sikora, Mieczysław
Orliński, Piotr
Bednarski, Mateusz

Powiązania:

https://bibliotekanauki.pl/articles/2024049.pdf

Data publikacji:

2021

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

alternative fuel
internal combustion engines
oxides of nitrogen
speed coefficients for chemistry reaction

Opis:

The research was divided into two stages. The first stage of work was to perform empirical research using the Perkins engine. The test stand was equipped with an exhaust gas composition analyzer, a pressure sensor enabling measurement of pressure in the engine cylinder and a crankshaft position sensor. This stage of research was realized for diesel and UCOME fuel. The second stage was a simulation test. The Zeldowicz model of thermal NO formation in compression ignition engines was used for calculations. Theoretical methods were compared with the results obtained in empirical tests. It was found that the most similar results of tests when powering the engine with UCOME fuel were obtained thanks to the GRI-MECH 3.0 (GM3) method. On the basis of this method, coefficients of the reaction rate of NO formation in an internal combustion engine, which is powered by the higher generation alternative fuel (Sikora et al. (S) method) were developed. For the calculation tests the values of the experimentally determined pressures were used. The proposed method can be used in simulation tests of a diesel engine running on FAME fuels with similar physical and chemical properties as the UCOME fuel. This will significantly reduce the costs of such tests, as some empirical tests can be eliminated by the conclusions of the simulation tests.

Źródło:

Advances in Science and Technology. Research Journal; 2021, 15, 2; 75-83
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Gas turbine direct exhaust gas integration in process industry – review of applications and opportunities for polish market

Autorzy:

Cichocki, Marek
Salamonik, Ilona
Bielecki, Marcin
Fadlun, Ever
Rusowicz, Artur

Powiązania:

https://bibliotekanauki.pl/articles/111073.pdf

Data publikacji:

2020

Wydawca:

Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.

Tematy:

turbine exhaust gases
gas turbines
utilization
direct drying
cooling
heating

Opis:

The typical combined heat and power plants requires the introduction of additional heating medium. The alternative solution is the direct integration of the exhaust gases from heat engine. The high temperature, surplus oxygen and low water content of the GTs exhaust gases enabled the successful integration at industrial scale as: preheated combustion air for industrial furnaces, heat source for drying and for absorption chillers. The article comprises the reference list for direct exhaust gas integration of GTs produced by GE, the processes overview, GTs selection criteria, as well as the review of documented GTs applications in process industry focusing on technical and economic considerations. The described solutions allowed to reduce the specific energy consumption in the range from 7 to 20% or the costs of energy consumption by 15-30%. The overall efficiency of cogeneration plant above 90% was achieved. The preliminary assessment of potential applications for GTs produced by GE with TEG integration in Polish process industry is done.

Źródło:

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych; 2020, 1; 1-18
2450-1859
2450-8721

Pojawia się w:

Inżynieria Bezpieczeństwa Obiektów Antropogenicznych

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Improvement of the cargo fleet vessels power plants ecological indexes by development of the exhaust gas systems

Autorzy:

Kuznetsov, Valerii
Dymo, Boris
Kuznetsova, Svitlana
Bondarenko, Mykola
Voloshyn, Andrii

Powiązania:

https://bibliotekanauki.pl/articles/1573635.pdf

Data publikacji:

2021

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

marine power plant
emissions
gas-air cooler
nozzle
intensification

Opis:

Modernisation of the power plants of cargo fleet vessels to satisfy the requirements set out by the International Maritime Organisation is an urgent scientific and technical problem. The article presents the results of developing a solution to this problem that focuses on the exhaust gas system. We propose the use of ejection nozzles as part of this system. It was found that when the ejection coefficient in these nozzles is n = 3, it is possible to exclude the use of SCR reactors, thus reducing the operating costs of the marine power plant. Using a mathematical modelling method, the efficiency of operation of six types of nozzle as part of the exhaust gas system was investigated, and a constructive layout was proposed for the gas ducts and inlet louvres for supplying ambient air. To increase the efficiency of the proposed system, we consider several options for intensifying heat transfer processes through the use of dimple systems in the nozzles and nozzles with swirling flow. We found that these technical solutions would make it possible to further increase the efficiency of the systems by up to 19% abs.

Źródło:

Polish Maritime Research; 2021, 1; 97-104
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

The draft of the exhaust gas heat exchanger and using of waste heat from internal combustion engines

Autorzy:

Brezáni, M.
Barta, D.

Powiązania:

https://bibliotekanauki.pl/articles/134806.pdf

Data publikacji:

2016

Wydawca:

ADVSEO

Tematy:

heat exchangers
cogeneration unit
waste heat
combustion engines
draft
simulation

Opis:

The paper discusses about the use of heat exchangers for stationary combustion engines and cogeneration units. The paper is dedicated to the problem of unused thermal energy in stationary engines. It analyses possibilities of accumulation of heat energy and its possible application in various fields. The paper deals with the classification of heat exchangers and with the subsequent description of design solutions of heat exchanger types used in agiven field. It solves the draft of exhaust gas heat exchanger for stationary combustion engines according to the required parameters of internal combustion engine and verifies the correctness of the design by subsequent simulations in the simulation program ComsolMultiphysics.

Źródło:

Technical Issues; 2016, 3; 19-28
2392-3954

Pojawia się w:

Technical Issues

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Paliwa roślinne a emisja składników toksycznych spalin
Vegatable fuels and the toxic component emission in exhaust gas

Autorzy:

Lotko, W.

Powiązania:

https://bibliotekanauki.pl/articles/263118.pdf

Data publikacji:

2000

Wydawca:

Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji

Tematy:

pozyskiwanie paliw roślinnych
składniki toksyczne spalin
własności paliw roślinnych i ich estrów

Opis:

W artykule przedstawiono wyniki badań nad wpływem zastosowania paliw roślinnych na ograniczenie skażenia środowiska naturalnego. Wyjaśniono, dlaczego istnieje duże zainteresowanie paliwami roślinnymi i ich estrami w zastosowaniu do silników wysokoprężnych. Podano podstawowe własności fizykochemiczne paliw roślinnych i ich estrów i porównano z olejem napędowym. Podano przykłady emisji składników toksycznych spalin silników zasilanych paliwami roślinnymi i ich estrami. Emisję limitowanych składników toksycznych spalin odniesiono do emisji aldehydów, wielopierścieniowych węglowodorów nienasyconych i nielimitowanych specyficznych aldehydów. Podano aspekty eksploatacyjne wynikające ze stosowania estru metylowego oleju rzepakowego. Przedstawiono zjawisko efektu cieplarnianego. Omówiono aspekt gospodarczy i społeczny wynikający ze stosowania paliw roślinnych.
The paper presents investigation results on the influence of vegetable fuels application on limiting the environmental contamination. Author explains why vegetable fuels and their esters application in a diesel engine is of a great interest. Fundamental physico-chemical properties of vegetable fuels and their esters are given in comparison with diesel oil. Examples of toxic component emission in exhaust gas of engines fuelled with vegetable fuels and their esters are given. The limited toxic component emission in exhaust gas is compared with the emission of aldehydes, polynuclear unsaturated hydrocarbons and non-limited specific aldehydes. The paper presents operational aspects that results from application of the rape oil methyl ester. The greenhouse effect is presented. Economic and social aspects that result from vegetable fuels application are described

Źródło:

Archiwum Motoryzacji; 2000, 3; 153-163
1234-754X
2084-476X

Pojawia się w:

Archiwum Motoryzacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Bench Tests for Exhaust Gas Temperature Distribution in an Aircraft Piston Engine with and without a Turbocharger

Autorzy:

Czarnigowski, Jacek Andrzej
Skiba, Krzysztof
Rękas, Daniel
Ścisłowski, Karol
Jakliński, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/2123277.pdf

Data publikacji:

2021

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

temperature distribution
piston engine
exhaust system
turbocharging
Rotax 912

Opis:

In ultralight aviation, a very important engine parameter is the power-to-weight ratio. On the one hand, there is a tendency to minimize the size and weight of engines, and on the other hand, there is a demand to achieve the highest possible power by using supercharging systems. Increasing power brings many benefits, but it also increases temperature in the exhaust system, posing a threat to delicate parts of the ultralight aircraft fuselage. Therefore, it is necessary to control temperature values in the engine exhaust system. This article presents the temperature distribution in the exhaust system of an aircraft engine by the example of a four-cylinder Rotax 912 engine with an electronic fuel injection system. The research was conducted in two stages: measurements were made first for the engine without a turbocharger with an original exhaust system and later for its modified version with an added turbocharger system. The paper presents a comparative analysis of exhaust gas temperatures measured at three points: 30, 180 and 1000 mm from the cylinder head. The tests were conducted for the same preset engine operating conditions at constant speed and manifold air pressure. It has been shown that the exhaust temperature in the exhaust manifold decreases with the distance from the cylinder head. The highest gradient, over three times higher than the gas temperature from 589.9 °C to 192.3 °C, occurred in the manifold with a turbocharger for 2603 RPM and 31 kPa of manifold air pressure. The introduction of turbocharging causes an increase in exhaust gas temperatures before the turbocharger by an average of 12%, with this increase being greater for operating points of higher inlet manifold pressure. Turbocharging also causes a significant decrease in exhaust gas temperatures behind the turbocharger and the silencer because the temperature drops there by an average of 25%.

Źródło:

Advances in Science and Technology. Research Journal; 2021, 15, 3; 155--166
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines. Part III. Diagnostic and operating tolerances

Autorzy:

Korczewski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/260052.pdf

Data publikacji:

2011

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

technical diagnostics
naval turbine engines
exhaust gas temperature
operating and diagnostic tolerances

Opis:

The third part of the article presents a method for detecting failures of the automatic engine control system with the aid of an exhaust gas temperature setter, specially designed and machined for this purpose. It also presents a procedure of identifying the operating tolerances and determining the diagnostic tolerances for the exhaust gas temperature recorded in the naval turbine engine during the start-up and acceleration processes. The diagnostic tolerances were determined using the statistic inference, based on the hypothesis about the normal distribution of the starting exhaust gas temperature dispersion at the initial time of engine operation. The above hypothesis was verified using the non-parametric statistic test ÷2 for examining the consistency of the empirical distribution with the assumed normal distribution. As a result of the examination, satisfactory convergence of the compared distributions was obtained which made the basis for assuming the three-sigma limits of the diagnostic tolerance for the analysed engine control parameter.

Źródło:

Polish Maritime Research; 2011, 4; 49-53
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

The Effect of biofuel on the emission of exhaust gas from an engine with a common rail system

Autorzy:

Łagowski, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/1838324.pdf

Data publikacji:

2020

Wydawca:

Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji

Tematy:

self-ignition engine
common rail system
biofuel
exhaust gas toxicity

Opis:

The paper presents the results of experimental tests of a FIAT MultiJet 1.3 SDE 90 PS engine equipped with a common rail system, running at full load operation at rotational speeds of n = 1000 rpm, 1750 rpm, 2000 rpm, 2500 rpm, 3000 rpm, 3500 rpm, 4000 rpm and 4200 rpm, carried out on a dynamometer stand. During the tests, the engine was supplied with diesel oil and rape oil fatty acid methyl esters (FAME) in the following proportions: B20 (80% diesel oil and 20% FAME), B40 (60% diesel oil and 40% FAME), B60 (40% diesel oil and 60% FAME) and B80 (20% diesel oil and 80% FAME). This paper presents an assessment of the effect of the additions of rape oil fatty acid methyl esters to diesel oil on the unit fuel consumption and the emission of the following harmful exhaust gas components: nitrogen oxides, hydrocarbons, carbon monoxide, particulates and carbon dioxide. The fuel consumption was measured using a AVL 730 Dynamic Fuel Consumption fuel dosimeter. The measurements of the concentrations of the above-mentioned harmful exhaust gas components were performed using a MEXA-1600 DEGR analyser manufactured by Horiba, while particulate emissions were measured with a MEXA-1230PM analyser manufactured by Horiba.

Źródło:

Archiwum Motoryzacji; 2020, 90, 4; 33-44
1234-754X
2084-476X

Pojawia się w:

Archiwum Motoryzacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

The Effect of Biofuel on the Emission of Exhaust Gas from an Engine with the Common Rail System

Autorzy:

Łagowski, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/1838328.pdf

Data publikacji:

2020

Wydawca:

Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji

Tematy:

self-ignition engine
common rail system
biofuel
exhaust gas toxicity

Opis:

The paper presents the results of experimental tests of a FIAT MultiJet 1.3 SDE 90 PS engine equipped with a common rail system, running at full load operation at rotational speeds of n = 1000 rpm, 1750 rpm, 2000 rpm, 2500 rpm, 3000 rpm, 3500 rpm, 4000 rpm and 4200 rpm, carried out on a dynamometer stand. During the tests, the engine was supplied with diesel oil and rape oil fatty acid methyl esters (FAME) in the following proportions: B20 (80% diesel oil and 20% FAME), B40 (60% diesel oil and 40% FAME), B60 (40% diesel oil and 60% FAME) and B80 (20% diesel oil and 80% FAME). This paper presents an assessment of the effect of the additions of rape oil fatty acid methyl esters to diesel oil on the unit fuel consumption and the emission of the following harmful exhaust gas components: nitrogen oxides, hydrocarbons, carbon monoxide, particulates and carbon dioxide. The fuel consumption was measured using a AVL 730 Dynamic Fuel Consumption fuel dosimeter. The measurements of the concentrations of the above-mentioned harmful exhaust gas components were performed using a MEXA-1600 DEGR analyser manufactured by Horiba, while particulate emissions were measured with a MEXA-1230PM analyser manufactured by Horiba.

Źródło:

Archiwum Motoryzacji; 2020, 90, 4; 33-44
1234-754X
2084-476X

Pojawia się w:

Archiwum Motoryzacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Laboratory study on influence of air duct throttling on exhaust gas composition in marine four - stroke diesel engine

Autorzy:

Kowalski, J.

Powiązania:

https://bibliotekanauki.pl/articles/248050.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

marine diesel engine
exhaust gas composition
toxic emission
laboratory investigation
air duct throttling

Opis:

Presented paper shows results of laboratory tests on the relationship between the throttling of a cross area of an air intake duct and the composition of exhaust gas from the marine engine. The object of research is a laboratory four-stroke diesel engine, worked with a load from 50kW to 250kW at a constant speed. During the laboratory, tests over 50 parameters were measured of the engine with technical condition recognized as a “working properly” and with a simulated the air intake duct throttling. The simulation consisted of inserting the throttling flanges to the air intake duct before compressor, limiting duct cross-sectional area by 20% and 60% respectively. The results of laboratory research confirm that the effect of the air intake duct throttling on the engine thermodynamic parameters is clearly visible only at considerable throttling. In the case of measuring the composition of exhaust gas, both mole fractions and emissions of gaseous components markedly affected even at low throttling. For example, 20% throttling of the cross section of the air intake duct increase the mole fraction of carbon monoxide in exhaust gas almost 44% during working the engine with load equal to 250kW, and only 10% of the temperature after air cooler. Keep in mind that the temperature after air cooler was an engine parameter, which undergoes the greatest change during the simulation of that malfunction. The conclusion is that the results of measurements of the composition of exhaust gas may contain valuable diagnostic information about the technical condition of the air delivery to the engine system.

Źródło:

Journal of KONES; 2012, 19, 1; 191-198
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Technical state assessment of charge exchange system of self-ignition engine, based on the exhaust gas composition testing

Autorzy:

Rudnicki, J.
Zadrąg, R.

Powiązania:

https://bibliotekanauki.pl/articles/258598.pdf

Data publikacji:

2017

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

diagnostic model
self-ignition engine
exhaust gas components
artificial neural networks

Opis:

This paper presents possible use of results of exhaust gas composition testing of self - ignition engine for technical state assessment of its charge exchange system under assumption that there is strong correlation between considered structure parameters and output signals in the form of concentration of toxic compounds (ZT) as well as unambiguous character of their changes. Concentration of the analyzed ZT may be hence considered to be symptoms of engine technical state. At given values of the signals and their estimates it is also possible to determine values of residues which may indicate a type of failure. Available tool programs aimed at analysis of experimental data commonly make use of multiple regression model which allows to investigate effects and interaction between model input quantities and one output variable. Application of multi-equation models provides great freedom during analysis of measurement data as it makes it possible to simultaneously analyze effects and interaction of many output variables. It may be also implemented as a tool for preparation of experimental material for other advanced diagnostic tools such as neural networks which , in contrast to multi-equation models, make it possible to recognize a state at multistate classification and - in consequence – to do diagnostic inference. Here , these authors present merits of application of the above mentioned analytical tools on the example of tests conducted on an experimental engine test stand.

Źródło:

Polish Maritime Research; 2017, S 1; 203-212
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Disturbances of water level indication in the selected smoke- -tube exhaust gas boiler under the real ambient conditions

Autorzy:

Tuński, T.

Powiązania:

https://bibliotekanauki.pl/articles/359957.pdf

Data publikacji:

2013

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

steam production
de-loaded engine
real ambient conditions

Opis:

New ways of the long term operation of low-speed long-stroke marine Diesel engines such as “Slow Steaming” and “Super Slow Steaming” caused disturbances in operation of waste heat recovery systems from main engines exhaust gases. The advancement of the control systems of the water level in smoke-tube exhaust gas boiler created a possibility to change that parameter during operation of the “main engine – exhaust gas boiler” system. It was made use of such a feature to develop a system of readjustment of water level in the smoke-tube boiler to main engine load. However, introduced methods were saddled with simplifications that can bring in additional disturbances in operation of the boiler feed water systems. The bellow paper deals with influence of the ambient condition of the smoke-tube waste heat boiler on the water level indication in the boiler.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 182-185
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 51.

Tytuł:

Analysis of operating conditions and emissions of the selected components of exhaust gas during SI engine braking phase

Autorzy:

Ubysz, A.
Łazarz, B.
Flekiewicz, M.

Powiązania:

https://bibliotekanauki.pl/articles/245339.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

toxic emissions
engine braking phase
catalytic converter
non-driving phases

Opis:

This paper presents analysis of conditions of CO2, CO, HC and NOX emissions during engine braking phase invehicles with 1.6 SI engine, based on the results of investigations by Professor Romaniszyn. The analysis aimed to determine the effect of cooling of catalytic converter and engine chamber on emissions of toxins and fuel efficiency in next driving phase. Based on own investigations, the synthesis of fuel consumption under three non-driving conditions of engine operation (i.e. continuous drive, engine braking and drive in neutral) is also presented. Current research centres often carry out extensive investigations of fuel efficiency and emissions of toxic compounds during real use of vehicles. Their results, due to previous assumptions or limitations in the scope of investigations, rarely provide an overall view of the problem. These attempts are typically made in scientific papers and dissertations [1-3]. Selective approach to the problem can be justified by the complexity and varied impact of each phase of engine 's operation on fuel consumption under unsteady heat conditions. Fuel consumption map in speed-acceleration coordinates for vehicle and engine, characteristics of CH emissions, parameters of engine braking phase and temperature characteristics of exhaust gases before catalytic converter are presented in the paper.

Źródło:

Journal of KONES; 2009, 16, 4; 469-476
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 52.

Tytuł:

Identification of damages in the inlet air duct of a diesel engine based on exhaust gas temperature measurements

Autorzy:

Puzdrowska, Patrycja

Powiązania:

https://bibliotekanauki.pl/articles/133073.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

diesel engine
intake air channel
diagnostics tests
silnik Diesla
kanał wlotowy powietrza
badania diagnostyczne

Opis:

The temperature of the exhaust gas of a diesel piston engine, measured in the characteristic control sections of its thermo-flow system, can be a valuable source of diagnostic information about the technical condition of the elements limiting the working spaces thus separated, including the turbocharging system, but also its fuel supply system and replacement of the medium. In standard marine engine measurement systems equipped with an impulse turbocharging system, the exhaust gas temperature is measured at the outlet of individual cylinders and before and after the turbocharger turbine, using traditional thermocouples with high measurement inertia (time constant of tenths of a second and more). This means that for further diagnostic analyses, the average value of the periodically changing temperature of the exhaust stream leaving individual engine cylinders, the exhaust stream in the collective duct feeding the turbine and the exhaust stream in the exhaust duct of the turbine is used. This article proposes a new approach to the issue of diagnostic informationiveness of the exhaust gas temperature of a diesel engine, extending its observations with the dynamics of changes in the duration of one working cycle. The aim of the tests carried out on the laboratory stand of Farymann Diesel engine type D10 was to determine the diagnostic relations between the loss of permeability of the inlet air channel filter baffle and selected standards of the quick-changing signal of the exhaust gas temperature. On the basis of the calculations carried out, the following dynamic features of the recorded signal were determined: maximum amplitude of instantaneous exhaust gas temperature values (peak-to-peak value), its rate of increase and decrease, and the specific enthalpy of exhaust gases within one engine work cycle. Comparative analysis of numerical data characterizing the recorded quick-changing exhaust gas temperature courses clearly indicates obvious thermodynamic and energy consequences of partial loss of flow capacity of the air channel supplying the combustion chamber of the test engine. A further development of the experimental test programme is foreseen in order to determine a diagnostic matrix to support the diagnostic inference about the technical condition of the diesel engine on the basis of measurements and analysis of the quick-changing exhaust gas temperature.

Źródło:

Combustion Engines; 2019, 58, 2; 108-112
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 53.

Tytuł:

Wykorzystanie silnika Stirlinga do odzysku energii ze spalin
Application of Stirling engine for recovery energy from exhaust gas

Autorzy:

Kropiwnicki, J.
Furmanek, M.

Powiązania:

https://bibliotekanauki.pl/articles/316855.pdf

Data publikacji:

2018

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

efektywność transportu
silnik Stirlinga
energia odpadowa
silnik spalinowy
transport efficiency
Stirling engine
waste energy
engine

Opis:

Silnik Stirlinga jest urządzeniem wytwarzającym energię mechaniczną, w którym nie występuje spalanie paliwa wewnątrz cylindra. Dzięki temu możliwe jest zasilanie silnika energią z dowolnego źródła. Takim źródłem może być promieniowanie słoneczne, spalanie niskokalorycznego paliwa zachodzące w zewnętrznej komorze spalania lub energia odpadowa z innego urządzenia cieplnego, np. silnika spalinowego autobusu lub pojazdu ciężarowego. Zastosowanie urządzenia tego typu w pojeździe samochodowym umożliwi obniżenie zużycia paliwa poprzez podniesienie efektywności wykorzystania energii cieplnej powstającej w silniku spalinowym, który stanowi napęd główny. W pracy przedstawiono komercyjne przykłady silników Stirlinga, które mogą być zasilane energią odpadową, przedstawiono również projekt koncepcyjny silnika typu alfa zasilanego energią cieplną spalin oraz wyniki wstępnych analiz oporów hydraulicznych regeneratora zastosowanego w tym silniku.
Stirling engine is device generating mechanical energy without combustion fuel inside cylinder. This fact allows to supply engine from any power source. Example of such energy source can be solar radiation, combustion low-calorie carbon in outside combustion chamber or waste heat from other device like combustion engine mounted in bus or lorry. Use that kind of device in car allows to reduce fuel consumption through increase of efficiency of utilization thermal energy produced in combustion engine. The paper presents commercial solution of Stirling engines powered by waste energy and project of conceptual Stirling engine type alpha powered by flue gases from truck. The initial analysis results of hydraulic resistance in that engine have been also included.

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 9; 89-92
1509-5878
2450-7725

Pojawia się w:

Autobusy : technika, eksploatacja, systemy transportowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 54.

Tytuł:

Performance of cryogenic oxygen production unit with exhaust gas bleed for sewage sludge gasification and different oxygen purities

Autorzy:

Kaszuba, Maja
Ziółkowski, Paweł
Mikielewicz, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/27312208.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

thermodynamic analysis
oxy-combustion of syngas
BECCS
cryogenic air separation
penalty production
oxygen production

Opis:

The paper presents a thermodynamic analysis of the integration of a cryogenic air separation unit into a negative CO2 emission gas power plant. The power cycle utilizes sewage sludge as fuel so this system fits into the innovative idea of bioenergy with carbon capture and storage. A cryogenic air separation unit integrated with the power plant was simulated in professional plant engineering and thermodynamic process analysis software. Two cases of the thermodynamic cycle have been studied, namely with the exhaust bleed for fuel treatment and without it. The results of calculations indicate that the net efficiencies of the negative CO2 emission gas power plant reach 27.05% (combustion in 95.0% pure oxygen) and 24.57% (combustion in 99.5% pure oxygen) with the bleed. The efficiencies of the cycle without the bleed are 29.26% and 27.0% for combustion in 95.0% pure oxygen and 99.5% pure oxygen, respectively. For the mentioned cycle, the calculated energy penalty of oxygen production was 0.235 MWh/kgO2 for the lower purity value. However, for higher purity namely 99.5%, the energy penalty of oxygen production for the thermodynamic cycle including the bleed and excluding the bleed was indicated 0.346 and 0.347 MWh/kgO2, respectively. Additionally, the analysis of the oxygen purity impact on the carbon dioxide purity at the end of the carbon capture and storage installation shows that for the case with the bleed, CO2 purities are 93.8% and 97.6%, and excluding the bleed they are 93.8% and 97.8%, for the mentioned oxygen purities respectively. Insertion of the cryogenic oxygen production installation is required as the considered gas power plant uses oxy-combustion to facilitate carbon capture and storage method.

Źródło:

Archives of Thermodynamics; 2023, 44, 3; 63--81
1231-0956
2083-6023

Pojawia się w:

Archives of Thermodynamics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 55.

Tytuł:

An experimental study of emission and combustion characteristics of marine diesel engine in case of cylinder Valves leakage

Autorzy:

Kowalski, J.

Powiązania:

https://bibliotekanauki.pl/articles/259195.pdf

Data publikacji:

2015

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

marine diesel engine
exhaust gas composition
emission
exhaust gas valve leakage
inlet valve leakage

Opis:

Presented paper shows the results of the laboratory tests on the relationship between throttling of both air intake duct and exhaust gas duct and a gaseous emission from the marine engine. The object of research is a laboratory, four-stroke, DI diesel engine, operated at loads from 50 kW to 250 kW at a constant speed equal to 750 rpm. During the laboratory tests over 50 parameters of the engine were measured with its technical condition recognized as a „working properly” and with simulated leakage of both air intake valve and exhaust gas valve on the second cylinder. The results of this laboratory research confirm that the leakage of cylinder valves causes no significant changes of the thermodynamic parameters of the engine. Simulated leakages through the inlet and exhaust valve caused a significant increase in fuel consumption of the engine. Valve leakages cause an increase of the exhaust gas temperature behind the cylinder with leakage and behind other cylinders. The exhaust gas temperature increase is relatively small and clearly visible only at low loads of the engine. The increase of the temperature and pressure of the charging air behind the intercooler were observed too. Charging air temperature is significantly higher during the engine operation with inlet valve leakage. The study results show significant increases of the CO, NOx and CO2 emission for all the mentioned malfunctions. The conclusion is that the results of measurements of the composition of the exhaust gas may contain valuable diagnostic information about the technical condition of the air intake duct and the exhaust gas duct of the marine engine.

Źródło:

Polish Maritime Research; 2015, 3; 90-98
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 56.

Tytuł:

ANN based evaluation of the NOx concentration in the exhaust gas of a marine two-stroke diesel engine

Autorzy:

Kowalski, J.

Powiązania:

https://bibliotekanauki.pl/articles/258708.pdf

Data publikacji:

2009

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

artificial neural network
marine two-stroke engine
NOx concentration
Annex VI to Marpol Convention

Opis:

The article presents results of a study on the possible application of artificial neural networks (ANNs) to the evaluation of NOx concentration in the exhaust gas of a marine two-stroke Diesel engine. A concept is presented how to use the ANN as an alternative to direct measurements carried out on a ship at sea. Methods of proper ANN selection, configuration and training are presented. Also included are the results of laboratory tests, performed to obtain data for ANN training and tests, and the results obtained from modelling certain processes with the aid of selected ANNs. As a result of the performed investigations, an ANN was constructed and trained to calculate NOx concentration in the Diesel engine exhaust gas based on the engine operation parameters measured with an average error of 1.83% , and the fuel consumption measured with an average error of 1.12%.

Źródło:

Polish Maritime Research; 2009, 2; 60-66
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 57.

Tytuł:

Diagnostic information analysis of quickly changing temperature of exhaust gas from marine diesel engine. Part i single factor analysis

Autorzy:

Puzdrowska, Patrycja

Powiązania:

https://bibliotekanauki.pl/articles/2033280.pdf

Data publikacji:

2021

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

marine diesel engine
exhaust gas temperature
diagnostic information
F-statistic of Fisher-Snedecor distribution

Opis:

In this paper, attention was paid to the problem of low controllability of marine medium- and high-speed engines during operation, which significantly limits the parametric diagnosis. The measurement of quickly changing temperature of engine exhaust gas was proposed, the courses of which can be a source of diagnostic information. The F statistic of the Fisher-Snedecor distribution was chosen as a statistical tool. Laboratory tests were carried out on the bench of a Farymann Diesel engine. The tests consisted of introducing the real changes in the constructional structure of the considered functional systems of the engine. Three changed parameters for the structure were reviewed: the active cross-sectional area of the inlet air channel, injector opening pressure and compression ratio. Based on the recorded plots of the quick-changing temperatures of the exhaust gases, three diagnostic measures were defined and subjected to statistical tests. The following data were averaged over one cycle for a 4-stroke piston engine operation, (1) the peakto-peak value of the exhaust gas temperature, (2) the specific enthalpy of the exhaust gas, and (3) the rate of increase and decrease in the values for the quick-changing exhaust gas temperature. In this paper will present results of the first stage of the elimination study: the one-factor statistical analysis (randomised complete plan). The next part will present the results of the second stage of studies: two-factor analysis (block randomised plan), where the significance of the effect of changing the values of the structure parameters on the diagnostic measures was analysed in the background of a variable engine load.

Źródło:

Polish Maritime Research; 2021, 4; 97-106
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 58.

Tytuł:

Symulacja pracy kotła utylizacyjnego z wykorzystaniem jego statycznego modelu
Simulation of Exhaust Gas Boiler Using Its Statical Mathematical Model

Autorzy:

Tuński, T.

Powiązania:

https://bibliotekanauki.pl/articles/359716.pdf

Data publikacji:

2004

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

kocioł utylizacyjny
wydajność parowa
symulacja
EXPLO-SHIP 2004
exhaust gas boiler
steam capacity
simulation

Opis:

Przedstawiono wyniki symulacji pracy jednociśnieniowych kotłów utylizacyjnych. W tym celu wykorzystano statyczny model wymiany ciepła w kotle. Otrzymane wyniki zweryfikowano na podstawie pomiarów, przeprowadzonych na statkach podczas prób morskich.
The article presents results of one-pressure exhaust gas boilers simulation based on the static mathematical model of heat exchange. The results were verified with parameters registered during ships' sea trials.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 1 (73); 509-516
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Influence of the exhaust gas recirculation on the oxygen contents and its excess ratio in the engine combustion chamber

Autorzy:

Postrzednik, S.
Żmudka, Z.
Przybyła, G.

Powiązania:

https://bibliotekanauki.pl/articles/245080.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

exhaust gas recirculation (EGR)
oxygen content
stoichiometric conditions
oxygen excess

Opis:

Exhaust gas recirculation (EGR) can be realized on the external or internal way. The main goal of EGR is to decrease the combustion temperature of the combustible mixture by increasing the relative heat capacity of the working medium. An additional effect is to reduce the oxygen content in the gas mixture flowing into the combustion chamber. To quantify the exhaust gas recirculation some descriptive parameters are defined, including: – exhaust gas recirculation rate R, – multiple of exhaust gas recirculation K, – relative exhaust gas recirculation W. The analysis concerns the effective oxygen excess ratio Oef in the combustible mixture and the so-called internal oxygen excess ratio Ow,, which additionally takes into account the supplied oxygen with the recirculation stream. It was found that with increasing of the exhaust gas recirculation degree systematically decreases the content of the oxygen [O2]d in the combustible mixture, while increases the oxygen excess ratio Oef observed in the exhaust gases. Changes of this all parameters influence the combustion coditions in the engine cylinder, and next the achieved specifaic work, energy efficiency and emission of the combustion engine. An advanced system with independent, early exhaust valve closing enables realization of an internal EGR. Effectiveness of internal recirculation is lower than the external recirculation.

Źródło:

Journal of KONES; 2013, 20, 3; 315-321
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 60.

Tytuł:

The effect of fuel dose division on the emission of toxic components in the car Diesel engine exhaust gas

Autorzy:

Pietras, D.

Powiązania:

https://bibliotekanauki.pl/articles/259658.pdf

Data publikacji:

2016

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

exhaust opacity
exhaust emissions
diesel engine
common rail
fuel dose division

Opis:

The article discusses the effect of fuel dose division in the Diesel engine on smoke opacity and composition of the emitted exhaust gas. The research activities reported in the article include experimental examination of a small Diesel engine with Common Rail type supply system. The tests were performed on the engine test bed equipped with an automatic data acquisition system which recorded all basic operating and control parameters of the engine, and smoke opacity and composition of the exhaust gas. The parameters measured during the engine tests also included the indicated pressure and the acoustic pressure. The tests were performed following the pre-established procedure in which 9 engine operation points were defined for three rotational speeds: 1500, 2500 and 3500 rpm, and three load levels: 25, 40 and 75 Nm. At each point, the measurements were performed for 7 different forms of fuel dose injection, which were: the undivided dose, the dose divided into two or three parts, and three different injection advance angles for the undivided dose and that divided into two parts. The discussion of the obtained results includes graphical presentation of contests of hydrocarbons, carbon oxide, and nitrogen oxides in the exhaust gas, and its smoke opacity. The presented analyses referred to two selected cases, out of nine examined engine operation points. In these cases the fuel dose was divided into three parts and injected at the factory set control parameters. The examination has revealed a significant effect of fuel dose division on the engine efficiency, and on the smoke opacity and composition of the exhaust gas, in particular the content of nitrogen oxides. Within the range of low loads and rotational speeds, dividing the fuel dose into three parts clearly improves the overall engine efficiency and significantly decreases the concentration of nitrogen oxides in the exhaust gas. Moreover, it slightly decreases the contents of hydrocarbons and carbon oxide. In the experiment the contents of nitrogen oxides markedly increased with the increasing injection advance angle for the undivided dose and that divided into two parts. This, in turn, led to the decrease of the contents of hydrocarbons and carbon oxide. Fuel dose division into two and three parts leads to the increase of smoke opacity of the exhaust gas, compared to the undivided dose.

Źródło:

Polish Maritime Research; 2016, 3; 58-63
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 61.

Tytuł:

Research on influence of selected control parameters of the injection system marine diesel engine on its exhaust gas toxicity

Autorzy:

Witkowski, K.

Powiązania:

https://bibliotekanauki.pl/articles/246698.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

ship diesel engine
injection system
heavy fuel oil
control parameters
exhaust gas toxicity

Opis:

This paper devoted to pollution of the atmosphere due marine diesel engines in operation. In the paper presented are results of the investigations carried out in the Gdynia Maritime Academy laboratory with the use of a ship diesel engine, one-cylinder, two-stroke, crosshead of longitudinal scavenging, which was loaded by means of the water brake. This diesel engine combusting heavy fuel oil IF 40. The test-involved effect of two selected control parameters of fuel injection system ship diesel engine: fuel injection pressure and injection advance angle. Both selected control parameters were changed during the experiment separately, each of them three times. And so: changing the fuel injection pressure - for three selected values: 18, 22 and 26 MPa; changing the fuel injection advance angle - for three selected values: -10 centigrade, -13 centigrade and -16 centigrade before the piston's top dead centre (BTDC). The measurements were performed within the wide range of engine load at the permanent rotational speed of 220 rpm. For each of the above selected values six measurements were performed at the following engine loads: 25%, 40%, 50%, 60%, 70% and 80% nominal loads. Control parameters to change the injection pump and injector engine, during operation of the engine, by means of a supplementary-scaled instrumentation of the injector and injection pump. Owing to this is was not necessary to stop the engine before each successive test cycle. This way of realization of the measurements guaranteed running them in steady conditions. The elimination of influence of possible disturbances witch could arise from multiple starting and stopping the engine improved accuracy and reliability of the obtained results.

Źródło:

Journal of KONES; 2012, 19, 2; 551-556
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 62.

Tytuł:

Diagnostic analysis of exhaust gas with a quickchanging temperature from a marine diesel engine part II / two factor analysis

Autorzy:

Puzdrowska, Patrycja

Powiązania:

https://bibliotekanauki.pl/articles/34616318.pdf

Data publikacji:

2023

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

marine diesel engine
exhaust gas temperature
diagnostic information
F-statistic of Fisher-Snedecor distribution

Opis:

The article presents a continuation of research carried out to determine the effect of input parameters (changes in engine structure parameters) on selected output parameters (diagnostic measures), based on quickly changing exhaust gas temperature. A method of determining the simultaneous influence of two input factors (the structure parameter and the engine load) on one output factor was presented, as well as an evaluation of which of the analysed input factors has a stronger influence on the output parameter. The article presents the stages of the experimental research conducted and statistical inference based on the results. Three changing parameters for the structure were reviewed: the active cross-sectional area of the inlet air channel, the injector opening pressure and the compression ratio. Based on the quickly changing temperatures of the exhaust gases, three diagnostic measures were defined and subjected to statistical tests. The following data were averaged over one cycle for a 4-stroke engine operation: the intensity of changes, the specific enthalpy and the peak-to-peak value of the exhaust gas temperature. The results of the two-factor analysis are presented. Conclusions on the analysis are given and a criterion for the selection of a diagnostic measure, depending on the analysed parameter of the structural design of the diesel engine, is proposed. The previous part of the article presented the results of the first stage of the elimination study: the one-factor statistical analysis (randomised complete plan). This paper presents the results of the second stage of the studies: two-factor analysis (block randomised plan), where the significance of the effect of changing the values of the structural parameters on the diagnostic measures were analysed in the background of a variable engine load. The next (third) part will present the results of the calculations and analysis of the interaction coefficient of significance.

Źródło:

Polish Maritime Research; 2023, 3; 89-95
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 63.

Tytuł:

Proposal of the combined exhaust gas heat exchanger and the muffler
Projekt zintegrowanego wymiennika ciepła spalin wraz z tłumikiem

Autorzy:

Brezáni, M.
Baran, P.
Labuda, R.

Powiązania:

https://bibliotekanauki.pl/articles/329440.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN

Tematy:

exhaust gas heat exchanger
muffler
simulation
3D model
structural design
wymiennik ciepła spalin
tłumik
symulacja
model 3D
projekt konstrukcyjny

Opis:

The article discusses about the design of a combined exhaust gas heat exchanger with muffler. The first stage deals with the calculation of the exhaust gas heat exchanger according to the required parameters. The next step addresses the structural design of the exhaust gas heat exchanger according to the parameters of the calculation. Subsequently creation a 3D model, which will be used for the simulation of flow of the working substance in the heat exchanger and heat transfer simulation of the media. The simulations are solved in a 3D simulation program COMSOL Multiphysics 5.0. Further solves the structural design of muffler, which will form a part of the exhaust gas heat exchanger. Subsequently execution of the measurements on the real model of the combined exhaust gas heat exchanger to verify the accuracy of calculations, simulations and structural designs.
W artykule omówiono projekt zintegrowanego wymiennika ciepła spalin wraz z tłumikiem. Pierwszy etap dotyczył obliczania wymiennika ciepła spalin w zależności od wymaganych parametrów. Następnym krokiem było stworzenie projektu konstrukcyjnego wymiennika ciepła spalin według parametrów z obliczeń. Następnie stworzono model 3D, który był wykorzystany do symulacji przepływu substancji roboczej w wymienniku ciepła oraz do symulacji transferu ciepła mediów. Symulacje są wykonywane w programie do symulacji 3D - COMSOL Multiphysics 5.0. Dalej wykonano projekt konstrukcyjny tłumika, tworzący całość z wymiennikiem ciepła spalin. Następnie wykonano pomiarów na rzeczywistym obiekcie zintegrowanego wymiennika ciepła spalin z tłumikiem, w celu sprawdzenia poprawności obliczeń, symulacji i projektu konstrukcyjnego.

Źródło:

Diagnostyka; 2015, 16, 3; 73-78
1641-6414
2449-5220

Pojawia się w:

Diagnostyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 64.

Tytuł:

Regeneracja filtrów spalin w silnikowych systemach antysadzowych
The regeneration process of exhaust gas filters in engine anti soot systems

Autorzy:

Swat, M.

Powiązania:

https://bibliotekanauki.pl/articles/263191.pdf

Data publikacji:

2002

Wydawca:

Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji

Tematy:

filtry spalin
regeneracja filtrów spalin
silnik samochodowy
spaliny
system antysadzowy

Opis:

W pracy przedstawiono warunki i kryteria stosowalności dwustrumieniowej metody regeneracji samochodowych filtrów spalin ograniczających emisję cząstek stałych z silników o zapłonie samoczynnym. Zaprezentowano wyniki badań własnych wpływu charakteru i rodzaju podaży energii (w okresie egzo- i endotermicznym) na właściwości energetyczne i skuteczność procesu destrukcji separowanych w filtrze cząstek stałych.
The paper describes conditions and criteria of applicability of the two energy streams regeneration method of automotive exhaust gas filters limiting PM emission from Diesel engines. The paper presents results of own investigations of the influence of the character and the energy supply type (in the exo- and endothermic period) on energy consumption and effectiveness of the destruction process of PM separated in the filter.

Źródło:

Archiwum Motoryzacji; 2002, 4; 207-229
1234-754X
2084-476X

Pojawia się w:

Archiwum Motoryzacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 65.

Tytuł:

Conceptual Design and Performance Analysis of an Exhaust Gas Waste Heat Recovery System for a 10000TEU Container Ship

Autorzy:

Ma, Zheshu
Yang, Dong
Guo, Qiang

Powiązania:

https://bibliotekanauki.pl/articles/259008.pdf

Data publikacji:

2012

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

exergy efficiency
marine diesel engine
thermal efficiency
waste heat recovery system

Opis:

According to operation characteristics of the main engine 9K98ME-C7, a combined turbines-exhaust gas waste heat recovery system is proposed to recover waste heat and increase system energy efficiency. Thermodynamic models based on the first thermodynamic law and the second thermodynamic law are formulated. The superheated steam yield, the total electric power yield, the first thermodynamic law efficiency, the exergy efficiency at different exhaust gas boiler working pressure, and the variation of the exergy efficiency under different feed water temperature and different steam turbine back pressure are analyzed. Thermodynamic results indicate that the most appropriate exhaust gas boiler pressure is 0.8MPa for studied main engine and the total thermal efficiency with combined turbines arrangement has climbed up to 53.8% from 48.5%.

Źródło:

Polish Maritime Research; 2012, 2; 31-38
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 66.

Tytuł:

A probabilistic concept of assessment of amount of noxious substances contained in exhaust gas emitted from self-ignition engines

Autorzy:

Girtler, J.

Powiązania:

https://bibliotekanauki.pl/articles/260405.pdf

Data publikacji:

2006

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

engine start-up
self-ignition engine
noxious substance

Opis:

A probabilistic concept of toxicity assessment of exhaust gas emitted from self-ignition engines was presented. Without such assessment it is not possible to determine pro-ecological merits of various transport means driven by self-ignition engines, including inland waterways passenger ships. In the concept a model of starting-up process of self-ignition engines was taken into consideration. The model was presented in the form of a semi-Markovian process, discrete in states and continuous during service. The states of the process are : the cold engine state (s1 ), warm engine state (s2) and hot engine state (s3 ). It made it possible to determine probabilities of the starting-up of engines from its particular states. For determination of mass of noxious substances contained in exhaust gas it is necessary to know the probabilities. Usefulness of the model in assessing amount of the noxious substances results from that during the starting-up of such engines many noxious substances are produced.

Źródło:

Polish Maritime Research; 2006, S 2; 33-37
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 67.

Tytuł:

Exhaust gas boilers technical state estimation based on model testing
Ocena stanu technicznego kotła utylizacyjnego w oparciu o badania modelowe

Autorzy:

Tuński, T.

Powiązania:

https://bibliotekanauki.pl/articles/257777.pdf

Data publikacji:

2007

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy

Tematy:

kocioł utylizacyjny
osad
symulacja
exhaust gas boiler
soot deposits
simulation

Opis:

During a reliable and responsible operation of exhaust gas boilers, the main disturbance of steam production is caused by deposits formed on the boiler's heat transfer area. Such deposits are being formed mainly on the surface having contact with exhaust gas of marine diesel engines. This article presents the results of a smoke-tube-exhaust-gas-boiler simulation. Obtained results indicate a relationship between the expected deposit coefficient and a trend line of simulation's steps.
Podczas odpowiedzialnej i prawidłowej eksploatacji kotła utylizacyjnego, głównym zakłóceniem jego pracy są zanieczyszczenia powierzchni wymiany ciepła. Zanieczyszczenia te odkładają się przede wszystkim na powierzchniach omywanych przez spaliny silników okrętowych. Prezentowany artykuł przedstawia wyniki symulacji pracy wodnorurkowego kotła utylizacyjnego. Rezultaty przeprowadzonych symulacji wykazały zależność pomiędzy przewidywaną wartością współczynnika zanieczyszczenia kotła oraz linią trendu wyznaczoną przez przebieg kroków symulacji.

Źródło:

Problemy Eksploatacji; 2007, 4; 241-247
1232-9312

Pojawia się w:

Problemy Eksploatacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 68.

Tytuł:

Research on influence of selected failures on the exhaust gas content of ship diesel engine working on heayy fuel oil

Autorzy:

Witkowski, K.

Powiązania:

https://bibliotekanauki.pl/articles/245333.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

laboratory tests
exhaust gas content
emission of nitric oxides
heavy fuel oils

Opis:

The article is devoted to problems connected with pollution of the atmosphere by ship engines. Atmosphere protection against pollution on sea vessels covers one of the most important areas of human ecological activity which has its own history as well as some achievements. The most crucial ones include 73/78 MARPOL Convention (International Convention for the Prevention of Pollution from Ships) referring to prevention against marine environment pollution, and later amendments to the Convention with Annex VI (Regulation for the Prevention of Air Pollution from Ships) dealing with reducing the emission of nitric oxides and sulphur oxides into the atmosphere by sea vessels engines Nitric oxides emissions from a given engine will depend on engine technical condition. Therefore it was to decided execute laboratory tests on influence of selected failures ship diesel engine, on its exhaust gas content, first of all on change nitric oxygen emission level. The article presents the results of experimental tests of the influence of charging air pressure, injection advance angle and injector opening pressure on content of exhaust gas, especially content nitric oxides (NOx), of ship diesel engine supplied with marine heavyfuel oil IF4.

Źródło:

Journal of KONES; 2009, 16, 4; 507-512
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 69.

Tytuł:

The influence of the fuel spray nozzle geometry on the exhaust gas composition from the marine 4-stroke diesel engine

Autorzy:

Kowalski, J.

Powiązania:

https://bibliotekanauki.pl/articles/133373.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

marine Diesel engine
fuel injector geometry
combustion process
exhaust gas composition
emission
silnik okrętowy
proces spalania
skład spalin
emisja

Opis:

The paper presents experimental research on a 4-stroke, 3-cylinder, turbocharged AL25/30 Diesel engine. Research consisted in investigating the effect of the geometry of the fuel injectors on the exhaust gas composition from the engine. During measurements, the engine was operated with a regulator characteristic of a load range from 40 kW to 280 kW, made by electric water resistance. The engine was mechanically coupled to the electric power generator. Three observations were made for each engine load, operating with fuel injectors of varying geometry. All considered types of injectors were installed on all engine cylinders. Mentioned injectors differed in the size of the nozzle holes diameters, holes numbers and angles measured between the holes axis. Engine performance data were recorded with a sampling time of 1 s. Cylinder pressure and fuel injection pressure on the front of each injector were collected also. The composition of the exhaust gas was measured using an electrochemical analyzer. According to the results, the change of fuel nozzle geometry results in a change in fuel spraying and evaporation and consequently changes in the course of the combustion process. The effect of this is the change of the composition of the exhaust gas.

Źródło:

Combustion Engines; 2018, 57, 1; 59-63
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 70.

Tytuł:

Laboratory station for research of the innovative dry method of exhaust gas desulfurization for an engine powered with residual fuel

Autorzy:

Korczewski, Z.
Rudnicki, J.
Zadrąg, R.

Powiązania:

https://bibliotekanauki.pl/articles/132848.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

compression-ignition engine
desulfurization of exhaust gas
dry method
silnik o zapłonie samoczynnym
odsiarczanie spalin
metoda sucha

Opis:

Development of technology for exhaust gas desulfurization in marine engines using the dry method is, nowadays, a priority due to the calendar of introducing restrictions by the Directive of the European Parliament and of the Council 2012/33/EU of 21 November 2012. According to this directive, starting from 1 January 2015, inside the SECA (Sulphur Emission Control Area) the maximum sulfur content of marine fuels used on territorial seas is 0.1% per weight unit. But at the same time the directive allows for the use of exhaust gas desulfurization plant operating in a closed system. The ship equipped with the system will be able to use fuels with a high sulfur content, which will then be removed from the exhaust gas through an applied adsorber, and the reacted adsorbent is received by specialized services stationed in harbors. The International Maritime Organization has set a limit value of the emissions of sulfur oxides in exhaust gases of marine engines at 6 g/kWh (International Convention for the Prevention of Sea Pollution from Ships MARPOL 73/78 Annex VI, Regulation 14). Contemporary methods of exhaust gas desulfurization in marine engines are all expensive methods (4-5 million euro). This is, among other reasons, due to the limited market audience, but primarily due to the monopolized position of manufacturers offering fabrication and assembly of this type of marine ship installations. Proposed as part of a research project financed by the Regional Fund for Environmental Protection and Maritime Economy in Gdansk, the dry method (adsorption) reducing SOx emissions in exhaust gases of marine engines, is an alternative, and a definitely cheaper and therefore competitive solution, compared to the wet methods (absorption), which are currently the most widely used in marine scrubber installations. Importantly, as confirmed by the results of the study, the proposed dry method, in addition to the effective reduction of sulfur oxides, also reduces emissions of nitrogen oxides and carbon monoxide. The paper presents the configuration and measurement capabilities of the test station built under the project, as well as the representative results of the investigations so far. During the exhaust gas desulfurization test a sodium adsorbent (sodium bicarbonate) and its modifications were used in the process of mechanical, chemical, and thermal activation. Two physicochemical processes were studied during the development of the method: of adsorbent’s reaction on the chemical emission of the exhaust gas – the effectiveness of SOx and NOx compound removal, with various structural solutions in the process reactor, the impact of the adsorber on the emission source of sulfur oxides, that is, on the compression-ignition engine. Therefore, one of the priorities of the project, with a utilitarian significance, was to determine the impact of the inclusion of the desulfurization installation in the exhaust gas system on the energy ratios of the engine.

Źródło:

Combustion Engines; 2017, 56, 1; 32-37
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 71.

Tytuł:

Application of BAT-CELL Bio-Ambient Tests in exhaust gas emissions examinations for Euro 4 and Euro 6 combustion engines

Autorzy:

Keska, A.
Janicka, A.

Powiązania:

https://bibliotekanauki.pl/articles/99917.pdf

Data publikacji:

2017

Wydawca:

Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych

Tematy:

in vitro method
engine exhaust
Euro standards

Opis:

The introduction of the subsequent European emission standards raises controversy among vehicle manufacturers and researchers. In order to meet the legal requirements, it is necessary to continually improve not only the cars but also the costly measurement facilities. In addition, current methods do not give a clear answer to the harmful effects of exhaust gases on living organisms. By using the appropriate In vitro method to directly assess the toxicity of gaseous mixtures, one can obtain simple, reliable results that can be used to validate the introduction of ever more stringent Euro standards.

Źródło:

Journal of Machine Engineering; 2017, 17, 4; 83-90
1895-7595
2391-8071

Pojawia się w:

Journal of Machine Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 72.

Tytuł:

The influence of non-cooled exhaust gas recirculation on the indicator diagrams and heat release parameters in diesel engine cylinder

Autorzy:

Cisek, J.

Powiązania:

https://bibliotekanauki.pl/articles/133039.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

diesel engine
exhaust gases
exhaust gas recirculation
EGR
indicator diagrams
rate of heat release
silnik spalinowy
spaliny
recyrkulacja spalin
wykresy indykatorowe
przebieg wywiązywania się ciepła

Opis:

This paper presents the results of the diesel engine research on the indicator and heat realized diagrams for VW 1.9 TDI working in 2 modes: with standard, non-cooled EGR system, and without this system. All of measurement was carried out on the some engine speed – 2000 rpm (speed of maximum engine torque) and various engine load. Some of the analyzed parameters were read directly from the measurement systems (e.g. indicator diagrams) or engine controller (e.g. start of injection) and the rest of them had to be calculated. The calculation of rate of heat release (δQ/dα) was based on the well-known mathematical model. When the exhaust gas recirculation valve is open, the maximum of combustion pressure and rate of maximum kinetic heat release (δQ_k/dα)_max are smaller than when the valve is closed. These facts are connected with the shorter self-combustion delay for engine working with EGR. But this is also associated with reduction of the rate of maximum diffusion heat release (δQ_d/dα)_max, which means that more particulates (PM) are excreted into the atmosphere. This fact explains e.g. significantly higher smog of exhaust gases for diesel engine which works with EGR system. The analysis results show that exhaust gas recirculation system slightly deteriorates the energetic parameters of VW 1.9 TDI engine, but, at the same time, significantly reduces the level of toxic nitrogen oxides in exhaust gases.

Źródło:

Combustion Engines; 2017, 56, 4; 283-288
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 73.

Tytuł:

Solution to Reduce Air Environmental Pollution from Ships

Autorzy:

Pham, H.T.
Nguyen, T.M.

Powiązania:

https://bibliotekanauki.pl/articles/116944.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Morski w Gdyni. Wydział Nawigacyjny

Tematy:

Pollution at Sea
Environment Protection
Ecology, MARPOL
Air Environmental Pollution
Gas Emissions
Exhaust Gas Emissions
Exhaust Gas

Opis:

Exhaust gas emissions from ships are increasingly polluting the air environment seriously. Therefore, the MARPOL 73/78 Annex VI is applied for all ships from 2017, Annex VI provided that the concentrations of NOx,SOx CO contained in ship’s exhaust gases must be less than 6.4 g/kWh, 0.6 g/kWh, and 5.5g/kWh respectively. Today, there are many solutions to reduce pollution emissions from exhaust gas of ships, such as improving combustion, using oil emulsion, using biofuel,…However, these solutions also have a handful of disadventages such as being unable to thoroughly resoulve problems, high cost, and very difficult to improve the quality of ship exhaust gas emissions for old ships. Exhaust gas treatment method uses a centralized treatment system where exhaust gas from the thermal engines is taken in a centralized treatment system before discharging into the air. After centralized treatment system, in comparision with raw exhaust gas, soot can be reduced by 98%, NOx can be reduced by 75%, SOx can be reduced by 80%. This method of treatment is not only low cost, good quality but also make marine heat-engines still use traditional fuels as well as need not improve its structure.

Źródło:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 2; 257-261
2083-6473
2083-6481

Pojawia się w:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 74.

Tytuł:

Evaluation of the basic exhaust gas parameters of a rail crane engine
Ocena podstawowych parametrów gazów wylotowych silnika żurawia kolejowego

Autorzy:

Andrzejewski, Maciej
Daszkiewicz, Paweł
Merkisz, Jerzy
Stawecki, Włodzimierz
Czerwiński, Jarosław
Gallas, Dawid

Powiązania:

https://bibliotekanauki.pl/articles/33519329.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny

Tematy:

evaluation
exhaust gas
parameters
rail crane engine
Ocena
spaliny
parametry
silnik dźwigu kolejowego

Opis:

The paper presents the research results and analysis of the TAKRAF ZU-EDK-300 rail crane operating conditions, and the basic exhaust gases parameters of its combustion engine while conducting selected track works supporting the modernization of the railway connection between Poznan and Pila. The research results presented in this paper have allowed to determine the exhaust gas energy recovery potential, among other things.
W artykule przedstawiono wyniki badań i dokonano analizy warunków użytkowania żurawia kolejowego TAKRAF ZU-EDK-300 oraz podstawowych parametrów gazów wylotowych jego silnika podczas prowadzenia wybranych prac torowych, wspomagających modernizację odcinka linii kolejowej wiodącej z Poznania do Piły. Przedstawione w opracowaniu rezultaty badań pozwoliły między innymi określić potencjał odzysku energii gazów wylotowych.

Źródło:

Rail Vehicles/Pojazdy Szynowe; 2018, Nr 1; 1-5
0138-0370
2719-9630

Pojawia się w:

Rail Vehicles/Pojazdy Szynowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

Analysis of impact of EGR valve construction on the exhaust gas flow parameters in the engine
Analiza wpływu konstrukcji zaworu EGR na parametry przepływu spalin w silniku

Autorzy:

Lenc-Brol, A.
Mamala, J.

Powiązania:

https://bibliotekanauki.pl/articles/134108.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

EGR valve
exhaust gas recirculation (EGR)
exhaust gas flow modeling
zawór EGR
recyrkulacja spalin
modelowanie przepływu spalin

Opis:

In this paper an analysis of the EGR valve design impact, in particular the outlet diameter, on the gas flow parameters in diesel engine (Z 1505) exhaust gas recirculation system of Zetor tractor was made. For this purpose the experimental and simulation studies of gas flow through the valve were carried out. The simulations using Fluent were made. Also distribution of the pressure and velocity vectors in the area of the valve outflow was presented. Analysis of the phenomena occurring in the exhaust area of the EGR valve was made. Also influence of the outlet diameter on the flow characteristics of the EGR valve was determined.
W artykule dokonano analizy wpływu konstrukcji zaworu EGR, a w szczególności średnicy otworu wylotowego na parametry przepływu spalin w układzie recyrkulacji spalin silnika o zapłonie samoczynnym typu Z 1505 ciągnika rolniczego marki Zetor. W tym celu przeprowadzono badania eksperymentalne i symulacyjne przepływu gazów przez zawór. Badania symulacyjne zrealizowano użyciu programu Fluent oraz przedstawiono rozkład wektorów prędkości i ciśnienia w obszarze wypływu gazu z zaworu. Przeanalizowano zjawiska turbulencji zachodzące w obszarze wylotowym zaworu. Określono również wpływ średnicy wylotowej na charakterystykę przepływową zaworu EGR.

Źródło:

Combustion Engines; 2013, 52, 3; 79-85
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Influence of the marine 4-stroke diesel engine malfunctions of the air and exhaust duct on the composition of exhaust gas

Autorzy:

Lewińska, J.

Powiązania:

https://bibliotekanauki.pl/articles/241541.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Opis:

Malfunctions of an intake air duct and an exhaust gas duct have negative impact on the operation of a diesel engine. The article presents results of a laboratory study on nitric oxides (NOx), carbon monoxide (CO) and carbon dioxide (CO2) emission levels from a marine four-stroke diesel engine. CO and CO2 emission levels are connected with oxygen content and specific fuel consumption. For this reason, the results of the laboratory study present oxygen fraction in exhaust gas and specific fuel consumption. The object of the study was laboratory piston engine, operating at constant speed. The measured engine parameters were carried out according to the regulations of the Annex VI to MARPOL 73/78 Convention. The study consisted of tests during engine operation without malfunctions and engine operation with simulated malfunctions. The laboratory study consisted of 3 observations: the engine assumed as operated without malfunctions, throttling of the exhaust gas duct by rotational barrier about 56° and throttling of the air intake duct by reducing of its cross section area by 60%. The simulated malfunctions caused changes in the total weighted NOx and CO emissions in all considered engine loads. All simulated malfunctions resulted in a decrease of all mentioned emission levels in the composition of exhaust gases during the operation at low engine loads and an increase of the CO2 emission level at the maximum engine load operation. The oxygen fraction decrease was observed for throttling of the intake air duct. The calculations of the weighted specific fuel consumption present a 2-3% change in the engine efficiency.

Źródło:

Journal of KONES; 2015, 22, 3; 141-148
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

Analysis of selected mineral and waste sorbents for the capture of elemental mercury from exhaust gases

Autorzy:

Wdowin, Magdalena
Macherzyński, Mariusz
Panek, Rafał
Wałęka, Mateusz
Górecki, Jerzy

Powiązania:

https://bibliotekanauki.pl/articles/127635.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Mineralogiczne

Tematy:

mercury capture
exhaust gas
minerals
waste products

Opis:

Several mineralogically, chemically and texturally diverse minerals and waste materials were selected for the testing of elemental mercury capture in exhaust gas, namely tyre char resulting from the burning of pyrolytic rubber tyres, class C fly ash, mesoporous material type MCM-41 and glauconite. Each material's mineralogical, chemical and textural characteristics were explored. In order to conduct experiments in conditions similar to those during the contact of sorbent with real coal exhaust fumes at a temperature of about 110-120°C, the experiments were carried out using a test device consisting of a furnace for burning powdered coals, a thermostatic cage for sorbent reactors and mercury gas analysers, which are able to measure and compare the effects of individual sorbents with exhaust gas. The study found that the best results for mercury sorption in the exhaust atmosphere were obtained for class C ash resulting from brown coal combustion.

Źródło:

Mineralogia; 2020, 51, 1; 17-35
1899-8291
1899-8526

Pojawia się w:

Mineralogia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

Investigation of exhaust gas temperature distribution within a furnace of a stoker fired boiler as a function of its operating parameters

Autorzy:

Krawczyk, P.
Badyda, K.
Szczygieł, J.
Młynarz, S.

Powiązania:

https://bibliotekanauki.pl/articles/240827.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

exhaust gas temperature measurement
grate boiler
aspirated thermocouple
spaliny
pomiar
kocioł rusztowy

Opis:

Distribution of the exhaust gas temperature within the furnace of a grate boiler greatly depends on its operating parameters such as output. It has a considerably different character than temperature distributions in other types of boilers (with pulverised or fluidised bed), as it varies considerably across the chamber. Results presented in this paper have been obtained through research of a grate-fired hot water boiler with a nominal rating of some 30 MW. Measurements have been taken by introducing temperature sensors into prearranged openings placed in the boiler side walls. Investigation has been carried out for different output levels. Tests involved thermocouples in ceramic coating and aspirated thermocouples. The latter were used to eliminate influence of radiative heat transfer on measured results. Values obtained with both methods have been cross-checked.

Źródło:

Archives of Thermodynamics; 2015, 36, 3; 3-14
1231-0956
2083-6023

Pojawia się w:

Archives of Thermodynamics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

The analysis of influence of fuel spray angle on NOx fraction in the exhaust gas from marine 4-stroke diesel engine

Autorzy:

Kowalski, J.

Powiązania:

https://bibliotekanauki.pl/articles/246120.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

marine diesel engine
NOx fraction
spray angle
CFD model

Opis:

The manuscript presents the analysis of influence of fuel spray angle on NOx fraction in the exhaust gas emitted from marine 4-stroke diesel engine. Analysis is based on computational fluid dynamic (CFD) model designed because of the motion mesh of combustion chamber of the marine engine cylinder and air inlet and exhaust gas ducts. Presented model consists of models of fuel injection into combustion chamber, breaking-up and evaporation of the fuel, mixing with air and turbulent combustion with heat transfer to construction elements of the engine cylinder. Mentioned CFD model is validated according to boundary and initial conditions taken from direct measurements. The chosen research object is laboratory 4-stroke turbocharged Diesel engine with direct injection of the fuel and mechanically controlled of both cylinder valves and the injector. The conclusion from the analysis is that the increase of fuel spray angle causes the increase of maximum speed of kinetic phase of the combustion and the decrease of maximum speed of diffusion phase of the combustion. The effect of this is the increase of maximum combustion pressure and the decrease of maximum combustion temperature. The result of presented changes in combustion process is the increase of NOx fraction in the exhaust gas. It should be noted that extended increase of the fuel spray angle cause close-up the fuel spray to the cylinder heads wall and the decrease of NOx fraction in the exhaust gas.

Źródło:

Journal of KONES; 2015, 22, 3; 309-316
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 80.

Tytuł:

Analysis of the impact of wind on fuel consumption and emissions of harmful exhaust gas compounds on the selected flight route

Autorzy:

Galant, Marta
Kurzawska, Paula
Maciejewska, Marta
Kardach, Monika

Powiązania:

https://bibliotekanauki.pl/articles/134041.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

LTO cycle
impact of wind
emission
fuel consumption
cykl LTO
wpływ wiatru
emisja
zużycie paliwa

Opis:

The article discusses the issue of the impact of wind force and direction on fuel consumption and the emission of harmful exhaust gases on the selected flight route. The focus was on percentage changes in fuel consumption and emissions of individual harmful exhaust gas compounds depending on the wind speed and the direction from which it interacts with the aircraft. The analysis was carried out for three different flight levels, in order to compare changes in fuel consumption and emissions also in terms of flight altitude, however the following article focuses only on one level - FL240.

Źródło:

Combustion Engines; 2019, 58, 4; 93-101
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 81.

Tytuł:

Improvement of axially symmetrical plasma reactor structure within a framework of particles pollution decrease in engines exhaust

Autorzy:

Irzycki, A.
Kalina, P.
Snopkiewicz, K.

Powiązania:

https://bibliotekanauki.pl/articles/242366.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

exhaust gas
particulate matter
plasma reactor
experimental investigation

Opis:

Within a framework of researches on cleaning of Diesel engine's fumes of particulates the sequence of construction variants of axially symmetrical device was examined. The device was fitted with the plasma reactor, in which the particles gained the same electric charge as a result of passing through the corona discharge zone. Then they were tilted aside in electrostatic field and finally collected infilter module. The principal functional problem met during research works was that the soot gathering on insulators ofelectrodes caused the drop of voltage and fade-out the corona discharge. It was solved by introducing the air stream blowing away the soot layer as well as the back flow induced by pressure difference within stream of exhaust gas. The latest version of device was put the 8 - phase test of particles and gaseous pollutants on test bed equipped with two-way exhaust pipe. The applied arrangement made possible the testing of engine in cases: without purifier, when exhaust gas swam through inactive purifying device (without voltage), when exhaust gas swam through active plasma reactor (purifler supplied with voltage of 15 kV). Using the final version of device, the 66 % cleaning efficiency of exhaust gas from particles and 10% decreasing of gaseous pollutants volume was achieved. The developed device may be a good basis for working up of prototype version and subsequent operational research works, especially on turbo charged engines.

Źródło:

Journal of KONES; 2009, 16, 2; 183-189
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 82.

Tytuł:

CFD modeling of syngas combustion and emissions for marine gas turbine applications

Autorzy:

Ammar, N. R.
Farag, A. I.

Powiązania:

https://bibliotekanauki.pl/articles/259882.pdf

Data publikacji:

2016

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

CFD
syngas fuel
combustion characteristics
exhaust gas emissions

Opis:

Strong restrictions on emissions from marine power plants will probably be adopted in the near future. One of the measures which can be considered to reduce exhaust gases emissions is the use of alternative fuels. Synthesis gases are considered competitive renewable gaseous fuels which can be used in marine gas turbines for both propulsion and electric power generation on ships. The paper analyses combustion and emission characteristics of syngas fuel in marine gas turbines. Syngas fuel is burned in a gas turbine can combustor. The gas turbine can combustor with swirl is designed to burn the fuel efficiently and reduce the emissions. The analysis is performed numerically using the computational fluid dynamics code ANSYS FLUENT. Different operating conditions are considered within the numerical runs. The obtained numerical results are compared with experimental data and satisfactory agreement is obtained. The effect of syngas fuel composition and the swirl number values on temperature contours, and exhaust gas species concentrations are presented in this paper. The results show an increase of peak flame temperature for the syngas compared to natural gas fuel combustion at the same operating conditions while the NO emission becomes lower. In addition, lower CO2 emissions and increased CO emissions at the combustor exit are obtained for the syngas, compared to the natural gas fuel.

Źródło:

Polish Maritime Research; 2016, 3; 39-49
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Nitrogen oxides emission estimator for a diesel engine use to reduce the emission of harmful substances in exhaust gas to environment

Autorzy:

Graba, M.
Mamala, J
Bieniek, A.
Hennek, K.

Powiązania:

https://bibliotekanauki.pl/articles/246302.pdf

Data publikacji:

2017

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

nitrogen oxides emission
diesel engine
estimation
combustion engines
air pollution
environmental protection

Opis:

This article reports the results of experimental and numerical analysis of emissions of nitrogen oxides in exhaust gas to the environment from a turbocharged diesel engine of a tractor. The problem of identifying nitrogen oxides emissions from the exhaust gases was formulated and subsequently solved, based on data gained from measurements. The results of estimation of nitrogen oxides emissions were verified on the basis of research on a test object. The object of the study and a non-linear static model of nitrogen oxides emission were also described for two systems – with and without exhaust gas recirculation. The article demonstrates that the use of an adequately selected mathematical model can lead to the estimation of emissions of nitrogen oxides contained in the exhaust gas of diesel engines in an off-road vehicle. The created model can be used to control the valve of the exhaust gas of recirculation system and so reduce the emission of harmful substances to the environment. The presented research results show the comparison of estimated and measured nitrogen oxides concentration. The estimated value from the mathematical model concentration is about from 0.7 s to 1 s earlier than the value measured by the sensor, therefore the exhaust gas recirculation system could be controlled accordingly before nitrogen oxides are formed.

Źródło:

Journal of KONES; 2017, 24, 3; 87-94
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 84.

Tytuł:

Researches of selected version axially symmetrical model plasma reactor to cleaning diesel exhaust gas of particulates
Badania wybranej wersji osiowo-symetrycznego modelowego reaktora plazmowego do oczyszczania spalin silnika o zapłonie samoczynnym z cząstek stałych

Autorzy:

Zawadzki, A.
Irzycki, A.
Kalina, P.
Snopkiewicz, K.

Powiązania:

https://bibliotekanauki.pl/articles/244007.pdf

Data publikacji:

2008

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

exhaust gas
particulate matter
plasma reactor
experimental investigation

Opis:

The investigations concerning application of plasma reactor to cleaning Diesel exhaust gas of particulates have been led at Institute of Aviation for several years. Crown discharges having positive potential generated in the reactor hand this positive charge over to solid particles contained in engine's fumes. Positively charged particles are subject to agglomeration and then acceleration in electrostatic field, which makes possible their catching in filter module. In present publication one of studied versions of device was described, in which the additional airflow against the high voltage electrode protecting insulator was applied to prevent the settling down of soot on them. The plasma reactor was powered by 15 kV - high voltage, which allow generating of fully developed corona discharge. The extensive investigations of value of corona discharge current were conducted depending on applied elements generating the discharge (the mesh of thin wires or linear blades) as well as on their configuration. It was found, that the best effects were achieved applying linear blades in form of two compact sets. The flow of fumes behind the reactor was divided in two zones - the internal one, leading the more pure part of fumes and the external one, containing the particulates deflected in electrostatic field, directed to filter module. The swirling vanes were placed on inlet of this module with the aim of producing the field of force of inertia, in which the heavier then fumes particles could be thrown away outside the channel limited with metal mesh and external side. The above mentioned elements form the space allowing the accumulation of caught particulates. Preliminary investigations showed over 60% effectiveness of cleaning of Diesel exhaust gas from solid particles and/or particulates.
Od kilku lat w Instytucie Lotnictwa prowadzone są badania nad zastosowaniem reaktora plazmowego do oczyszczania spalin silnika o zapłonie samoczynnym z cząstek stałych. W reaktorze generowane są wyładowania koronowe o potencjale dodatnim, który przekazuje cząstkom stałym zawartym w spalinach jednoimienny ładunek. Dodatnio naładowane cząstki ulegają następnie aglomeracji i akceleracji w polu elektrostatycznym, co umożliwia ich wychwytywanie w module filtracyjnym. W niniejszej publikacji opisano jedną z badanych wersji urządzenia oczyszczającego, w którym zastosowano nadmuch dodatkowego powietrza zabezpieczający izolator wysokonapięciowej elektrody przed osadzaniem się na niej sadzy. Reaktor plazmowy pracował pod napięciem 15 kV enerując w pełni rozwinięte wyładowania koronowe. Przeprowadzono obszerne badania wartości prądu wyładowań koronowych w zależności od zastosowanych elementów generujących wyładowania (siatki cienkich drutów, bądź ostrzy liniowych) oraz od ich konfiguracji. Stwierdzono, iż najlepsze efekty można uzyskać stosując ostrza liniowe w postaci dwóch zwartych zestawów. Przepływ spalin za reaktorem rozdzielono na dwie strefy - wewnętrzną czyściejszych spalin oraz zewnętrzną spalin zawierających odchylone w polu elektrostatycznym cząstki stałe kierowane do modułu filtracji. Moduł ten wyposażono na wlocie w łopatki silnie zawirowujące spaliny w celu wytworzenia pola sił masowych odrzucających cięższe od spalin cząstki na zewnątrz kanału ograniczonego metalową siatką i ścianką zewnętrzną. Elementy te tworzyły przestrzeń umożliwiającą gromadzenie wychwyconych cząstek. Wstępne badania wykazały ponad 60% skuteczność oczyszczania spalin z cząstek stałych.

Źródło:

Journal of KONES; 2008, 15, 2; 563-569
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

Optimalization of sorbent feeding in the dry method of flue gas desulfarization

Autorzy:

Kwiatkowski, P.
Zadrąg, R.

Powiązania:

https://bibliotekanauki.pl/articles/2073590.pdf

Data publikacji:

2017

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

sulfur oxides
exhaust gas toxicity
exhaust gas desulfurization
dry method
FGD
tlenki siarki
toksyczność spalin
odsiarczanie spalin
suche metody odsiarczania spalin

Opis:

The swiftly developing sea transport contributes to a considerable increase of fuel usage in the international shipping, which results in the escalation of toxic compounds emitted into the atmosphere. It is followed by the constantly heightened requirements limiting those emissions. In the case of sulfur oxide emission, inside of SECA (Sulfur Emission Control Area), the maximum content of sulfur in the shipping fuels used on the territorial seas was reduced to 0.1% per mass unit, but at the same time the legislator allows the ability to use a desulfurization installation working in a closed configuration. One of the desulfurization methods fulfilling those requirements is the dry method of desulfurization. In this paper are presented the results of research conducted on this very topic in the Department of Marine and Land Power Plants. The focus is the presentation of formulated characteristics of adsorbent feeding by an injection system dedicated to the dry method.

Źródło:

Journal of Polish CIMEEAC; 2017, 12, 1; 51--58
1231-3998

Pojawia się w:

Journal of Polish CIMEEAC

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

Problems of exhaust gas emission of modernized diesel locomotives operating in Poland
Problemy emisji spalin z modernizowanych lokomotyw spalinowych eksploatowanych w Polsce

Autorzy:

Stawecki, W.
Marciniak, Z.
Pielecha, I.
Pielecha, J.

Powiązania:

https://bibliotekanauki.pl/articles/133170.pdf

Data publikacji:

2014

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

tests of diesel locomotives
exhaust gas emission
badania lokomotyw spalinowych
emisja spalin

Opis:

This article presents the analysis of emissivity of diesel locomotives operating in Poland. In the last years a significant part of the rail vehicles have been subjected to remotorization consisting in replacement of the combustion engine with the new generation model. This leads to the reduction of toxic constituents emission of exhaust gases from the railway vehicles. The analysis was conducted bearing in mind the histograms of locomotives loads in normal work conditions. It allowed to assess the ecological benefits of these engines during their operation.
W artykule przedstawiono analizę emisyjności eksploatowanych lokomotyw spalinowych w Polsce. Znaczną część pojazdów szynowych w ciągu ostatnich lat poddano remotoryzacjom polegającym na zastąpieniu silnika spalinowego nowszym generacyjnie modelem. Skutkuje to zmniejszeniem emisji składników toksycznych spalin z pojazdów szynowych. Analizę przeprowadzono z uwzględnieniem histogramów obciążeń lokomotyw w typowych warunkach pracy, co pozwoliło na ocenę korzyści ekologicznych związanych z tymi silnikami w czasie ich eksploatacji.

Źródło:

Combustion Engines; 2014, 53, 1; 48-58
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

Tytuł:

Analysis of the impact of damage to the injection system on the emission of toxic substances in a spark-ignition internal combustion engine

Autorzy:

Dziubiński, Mieczysław
Siemionek, Ewa
Drozd, Artur
Żur, Paweł
Ścirka, Michał
Tatarynow, Dawid

Powiązania:

https://bibliotekanauki.pl/articles/133801.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

spark-ignition internal combustion engine
exhaust gas toxicity
exhaust gas standards
injection system damage
exhaust gas analyzer
silnik spalinowy o zapłonie iskrowym
toksyczność spalin
normy emisji spalin
uszkodzenie układu wtryskowego
analizator spalin

Opis:

The article presented analyses the impact of damage to the injection system on the emission of toxic subsumes in a spark-ignition internal combustion engine. The work focuses on the basic elements of the injection system, which include injectors, throttle position sensor, coolant temperature sensor and lambda sensor. In addition, a catalytic reactor has been included in the context of its direct cooperation with the injection system under set conditions. The toxicity of exhaust gases of different spark-ignition engines fueled with petrol or gas in determined operating conditions using the MAHA MGT5 exhaust gas analyser was tested. The content of toxic substances in the exhaust gases was recorded for the correct settings of the injection system and for the engine working with damage to this system. The tests carried out will allow to assess the impact of the damage of the injection system on the toxicity of exhaust gases.

Źródło:

Combustion Engines; 2019, 58, 4; 112-118
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 88.

Tytuł:

Ocena możliwości wykorzystania energii spalin turbodoładowanych silników do celów chłodniczych
The potential use of exhaust gas energy for cooling turbocharged petrol engines

Autorzy:

Danilecki, K.
Mrozik, M.
Burak, P.

Powiązania:

https://bibliotekanauki.pl/articles/313958.pdf

Data publikacji:

2016

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

silnik o zapłonie samoczynnym
turbodoładowanie
turbochłodzenie
diesel engine
turbocharging
turbocooling

Opis:

W pracy przedstawiono zależności umożliwiające wyznaczenie całkowitej sprawności zespołu turbosprężarek pracujących w układzie turbochłodzenia silnika. Dokonano oceny optymalnego podziału mocy pomiędzy turbosprężarki w celu schłodzenia powietrza wykorzystywanego do doładowania silnika oraz do celów chłodniczych.
The paper presents relationships that can be used to determine the overall efficiency of a set of turbochargers operating in a turbo cooling system. It provides an evaluation of the optimum distribution of power between the turbochargers to cool the air used to boost the engine and for cooling purposes.

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 8; 267-270
1509-5878
2450-7725

Pojawia się w:

Autobusy : technika, eksploatacja, systemy transportowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 89.

Tytuł:

Analiza przebiegów zmian temperatury czynnika roboczego w cylindrze oraz kanale spalin wylotowych silnika o zs dla potrzeb diagnostycznych - stan badań

Autorzy:

Puzdrowska, Patrycja

Powiązania:

https://bibliotekanauki.pl/articles/2073505.pdf

Data publikacji:

2020

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

silnik o zapłonie samoczynnym
temperatura spalin
ciśnienie spalin
analiza
synteza
compression ignition engine
exhaust gas temperature
exhaust gas pressure
analysis
synthesis

Opis:

Charakter przebiegów zmian ciśnienia i temperatury czynnika roboczego w silniku o zapłonie samoczynnym jest istotnym źródłem informacji diagnostycznych. Pozwalają na analizę stanu technicznego zarówno aparatury paliwowej jak i układu cieplno -przepływowego. Dotyczy to zarówno temperatury i ciśnienia gazów w czasie całego cyklu pracy silnika o ZS wewnątrz cylindra, jak i tych samych parametrów dotyczących spalin, rejestrowanych w kanale wylotowym. W niniejszym artykule przedstawiono wymienione powyżej przebiegi, zarówno te o charakterze teoretycznym lub analitycznym, jak i powstałe w rezultacie badań obiektów rzeczywistych. Poddano analizie porównawczej przebiegi teoretyczne i rzeczywiste, w przestrzeni wewnątrzcylindrowej i w kanale spalin wylotowych oraz omówiono przyczyny różnic pomiędzy nimi. Wskazano i omówiono czynniki mające największy wpływ na te różnice. Przeanalizowano przyczyny przesunięcia wartości maksymalnej temperatury względem maksymalnego ciśnienia w obrębie jednego cyklu pracy silnika o ZS.

Źródło:

Journal of Polish CIMEEAC; 2020, 15, 1; 89--101
1231-3998

Pojawia się w:

Journal of Polish CIMEEAC

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Investigation of the influence of hydrogen used in internal combustion engines on exhaust emission
Badanie wpływu wodoru stosowanego w silnikach spalinowych na emisję spalin

Autorzy:

Keršys, A.
Kalisinskas, D.
Pukalskas, S.
Vilkauskas, A.
Keršys, R.
Makaras, R.

Powiązania:

https://bibliotekanauki.pl/articles/301535.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

hydrogen
fuel
exhaust gas
energetic
wodór
paliwo
spaliny
energetyczny

Opis:

This article deals with the possibility to use hydrogen in gasoline and diesel engines. Hydrogen production in a vehicle and hydrogen generators mounted in a vehicle are overviewed. Under operation of the hydrogen generator electrical current changes with temperature, to stabilize current the current pulse generator is used. Modifications of an intake manifold were made in order to supply hydrogen to an engine. For this purpose a special universal plate to evenly mix the hydrogen with fuel mix was made designed. The experimental and rig tests were performed. The rig tests were carried out at constant 2200 rpm. It was found that smokiness, in both cases decreases with an additional deployment of hydrogen. Other indicators of the exhaust gas using the hydrogen in case of the rig tests are worse. A possible cause of negative influence is an excessive amount of hydrogen, which releases at 25 A current.
Przedstawiony artykuł dotyczy możliwości wykorzystania wodoru w silnikach benzynowych i wysokoprężnych. Omówiono wytwarzanie wodoru w pojeździe oraz w generatorach wodoru zamontowanych w pojeździe.W trakcie funkcjonowania generatorawodoru prąd elektryczny zmienia się wraz z temperaturą; w celu stabilizacji prądu stosuje się generator impulsów prądowych. Aby dostarczyć wodór do silnika dokonano modyfikacji kolektora dolotowego. Do tego celu zaprojektowano specjalną uniwersalną płytę do równomiernego mieszania wodoru z mieszanką paliwową.Przeprowadzono próby eksperymentalne i próby na stanowisku badawczym. Próby na stanowisku badawczym prowadzono przy stałej prędkości obrotowej 2200 rpm. Stwierdzono, że zadymienie w obu przypadkach zmniejsza się wraz z dodatkowym wykorzystaniem wodoru. Inne wskaźniki spalin przy wykorzystaniu wodoru w przypadku badań na stanowisku badawczym wypadają mniej korzystnie. Możliwą przyczyną tego negatywnego oddziaływania jest nadmierna ilość wodoru, który uwalnia się w obecności prądu o wartości 25 A.

Źródło:

Eksploatacja i Niezawodność; 2013, 15, 4; 384-389
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 91.

Tytuł:

Technical and ecological analysis of different solutions of the power supply of a marine diesel engine

Autorzy:

Krakowski, Rafał

Powiązania:

https://bibliotekanauki.pl/articles/242528.pdf

Data publikacji:

2019

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

technical analysis
special area
exhaust gas scrubbers
alternative drives

Opis:

The article contains provisions on the prevention of sea pollution by ships, including, inter alia, the International Convention for the Prevention of Pollution from Ships, developed in 1973 (MARPOL). The convention aims to protect the marine environment from oil and its derivatives. Special areas, where extraordinary measures have been taken to prevent sea pollution, due to the intensity of ship traffic and the greater threat of damage to the marine environment have also been presented. In the further part of the article, the applicability of various pro-ecological solutions, i.e. the use of catalysts, low-sulphur fuels, and in the case of using residual fuels – exhaust gas scrubbers were described. In the main part of the article, a technical and ecological analysis was made. In addition, difficulties resulting from the use of pro-ecological solutions were described. The costs of using low-sulphur fuel meeting the emission standards, installing the scrubber and modification of the natural gas combustion unit were compared with the assumption of ten years of passenger-car ferry sailing. Then the problems that individual solutions create were shown. In the final part of the article, alternatives to those described, i.e. the liquefied natural gas (LNG) power supply, electric and hydrogen drives were presented.

Źródło:

Journal of KONES; 2019, 26, 4; 127-134
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

Possibility to reduce knock combustion by EGR in the SI test engine

Autorzy:

Tutak, W.

Powiązania:

https://bibliotekanauki.pl/articles/246177.pdf

Data publikacji:

2011

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion
knock
exhaust gas recirculation (EGR)
modelling
thermal cycle

Opis:

The paper presents the results of modelling thermal cycle of internal combustion engine including exhaust gas recirculation. The test engine can not achieve the optimum parameters of work due to occurrence of the knock combustion. The influence of EGR on the limits of the knock occurrence in the engine was studied. It turned out that few percent of exhaust gases in the fresh charge effectively shifts the knock limit to higher ignition advance angles. The values of the limit ignition timing for the test engine was determined in order to avoid combustion knock. Larger share of EGR caused too much slowing the spread of the flame inside the combustion chamber of the test engine. EGR at constant angle of ignition was very effective in limiting the content of NO in the exhaust, but on the other hand it has an adverse effect on the engine parameters. The engine operate with exhaust gas recirculation in order to obtain the possible best parameters the ignition timing should be optimized. However, that with increasing values of the thermodynamic parameters of thermal cycle of engine increased NO content in the exhaust. The paper presents results of modelling thermal cycle of IC engine, including exhaust gas recirculation and knock combustion. The object of researches was the S320ER spark ignition internal combustion engine supplied with petrol. The engine was operated at a constant speed of1000 rpm. Modelling of the thermal cycle of the test SI engine in the FIRE software was carried out.

Źródło:

Journal of KONES; 2011, 18, 3; 485-492
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Ochistka vybrosov ot koksovykh pechejj s pomoshhju skrubbera nasadochnogo tipa
Cleaning of emissions from coke ovens at scrubber packed type

Autorzy:

Red'ko, A.
Chajjka, J.
Burda, J.

Powiązania:

https://bibliotekanauki.pl/articles/76341.pdf

Data publikacji:

2015

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

scrubber
nozzle
gas cleaning
coke oven worker
exhaust gas

Źródło:

Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 6
1730-8658

Pojawia się w:

Motrol. Motoryzacja i Energetyka Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 94.

Tytuł:

Numerical analysis of some parameters of SI internal combustion engine with exhaust gas recirculation
Analiza numeryczna wybranych parametrow pracy silnika ZI z recyrkulacja spalin

Autorzy:

Tutak, W.

Powiązania:

https://bibliotekanauki.pl/articles/792847.pdf

Data publikacji:

2011

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

internal combustion engine
combustion
exhaust gas recirculation
modelling
thermal cycle
engine parameter
knock combustion process
numerical analysis

Źródło:

Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11
1641-7739

Pojawia się w:

Teka Komisji Motoryzacji i Energetyki Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 95.

Tytuł:

System zarządzania jakością a proces legalizacji analizatorów spalin samochodowych
The quality management system and the process of the official approval of exhaust gas analysers

Autorzy:

Stoma, M.

Powiązania:

https://bibliotekanauki.pl/articles/311480.pdf

Data publikacji:

2011

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

zarządzanie jakością
spaliny samochodowe
analizator spalin
quality management
exhaust gas
combustion gas analyser

Opis:

W artykule przedstawiono cechy wspólne oraz różnice w postrzeganiu wzorcowania, jako jednego z głównych elementów systemu zarządzania jakością, w porównaniu z procesem związanym z metrologią prawną, jakim jest legalizacja. Jako obiekt analizy posłużył analizator spalin samochodowych. Ponadto zaproponowana została procedura wspomagająca proces podejmowania decyzji w sytuacji badania urządzenia pomiarowego podlegającego zarówno legalizacji, jak i wzorcowaniu.
In this paper the common features and differences in perceiving calibrating as one of the main elements of the quality management system were described, compared with the process associated with the legal metrology, that is the legalization process. The object of analysis was the gas exhaust analyser. Moreover, a procedure supporting the process of making the decisions in the situation of inspecting a measuring device being subject to both a legalization and calibrating, was suggested.

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2011, 12, 10; 405-411
1509-5878
2450-7725

Pojawia się w:

Autobusy : technika, eksploatacja, systemy transportowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

Możliwości usuwania rtęci ze spalin w urządzeniach do oczyszczania gazów
The possibility of mercury removal from exhaust gas in air pollution control devices

Autorzy:

Wichliński, M.
Kobyłecki, R.
Bis, Z.

Powiązania:

https://bibliotekanauki.pl/articles/282206.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN

Tematy:

rtęć
urządzenia do oczyszczania spalin
elektrofiltr
odsiarczanie spalin
mercury
air pollution control device
FGD
ESP

Opis:

W pracy przedstawiono analizę możliwości usuwania rtęci przez standardowo stosowane urządzenia do oczyszczania spalin. Przedstawiono możliwości usuwania rtęci w elektrofiltrach, oraz filtrach workowych podczas odpylania gazów spalinowych, a także podczas usuwania tlenków azotu w procesach selektywnej katalitycznej (SCR) i niekatalitycznej (SNCR) redukcji tlenków azotu. Zaprezentowano możliwość usuwania rtęci w procesach odsiarczania spalin, takich jak sucha i mokra metoda odsiarczania spalin. Procesy odpylania spalin umożliwiają ograniczenie emisji rtęci od 5 do 60%, głównie jest to rtęć związana na cząstkach popiołu lotnego Hg_(p). Większą skutecznością wykazują się tu filtry workowe, których skuteczność może dochodzić do 90%. Odsiarczanie spalin połączone z elektrofiltrem umożliwia ograniczenie emisji rtęci o 50–75%. Pozytywny wpływ na obniżenie emisji ma również zastosowanie instalacji do redukcji NOx-ów, pozwala one na zwiększenie udziału utlenionej rtęci Hg²⁺ w spalinach nawet o 20%. Ważną rolę odgrywa również rodzaj węgla, jaki jest spalany w kotle, większy stopień usuwania rtęci notuje się podczas spalania węgli bitumicznych, aniżeli węgli subbitumicznych lub brunatnych.
This paper presents an analysis of the possibility of removing mercury from exhaust gases by standard air pollution control devices. This includes the removal of mercury in electrostatic and fabric filters during particle extraction from exhaust gases, and also during the removal of nitrogen oxides in the process of selective catalytic reduction (SCR) and non-catalytic selective reduction (SNCR) of nitrogen oxides. Also presented is the possibility of removing mercury in flue gas desulfurization processes such as the wet and dry flue gas desulfurization methods. Particle removal processes make it possible to reduce mercury emissions from 5% to as much as 60% – mainly mercury which is bound to the particles of fly ash Hg_(p). More effectively demonstrated here is the efficiency of fabric filters which can collect up to 90% of the mercury. Fuel gas desulfurization combined with an electrostatic precipitator can reduce mercury emissions by 50–75%. The positive effect on the reduction of Hg also applies to the installation of NOx reduction SCR, which allows an increase in the proportion of oxidized mercury in the flue gas Hg²⁺ of up to 20%. Further, an important role is played by the type of coal which is combusted in a boiler; a greater degree of mercury removal is recorded during the combustion of bituminous coals than subbituminous coal or lignite.

Źródło:

Polityka Energetyczna; 2014, 17, 4; 317-328
1429-6675

Pojawia się w:

Polityka Energetyczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 97.

Tytuł:

Analiza wpływu konfiguracji pozasilnikowych układów oczyszczania spalin w aspekcie temperatury w układzie wylotowym silnika o zapłonie iskrowym
Analysis of the effect of exhaust aftertreatment systems configurations on the temperature measured in the exhaust system of a spark-ignition engine

Autorzy:

Siedlecki, Maciej
Fuć, Paweł
Sokolnicka, Barbara
Szymlet, Natlia

Powiązania:

https://bibliotekanauki.pl/articles/312383.pdf

Data publikacji:

2019

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

temperatura gazów
oczyszczanie spalin
GPF
exhaust gas temperature
aftertreatment system

Opis:

W artykule omówiony został wpływ konfiguracji pozasilnikowych układów oczyszczania spalin na uzyskiwaną temperaturą gazów w poszczególnych punktach układu wylotowego. Reaktory katalityczne i filtry do skutecznego oczyszczania gazów wymagają m. in. określonej temperatury. Temperatura ta zmniejsza się wraz z odległością od kolektora wylotowego. Badania przeprowadzone w artykule polegały na pomiarze temperatury spalin w różnych miejscach układu w symulowanych warunkach rzeczywistych na silnikowej hamowni dynamicznej w aspekcie zastosowania filtra cząstek stałych i jego skutecznego oczyszczania. Badanie temperatury przy pomocy termopar pozwoliło na ocenę możliwości ich zadziałania podczas eksploatacji miejskiej i pozamiejskiej w symulowanych warunkach rzeczywistych.
The article discusses the effect of exhaust aftertreatment systems configuration on the resulting exhaust gas temperature at selected points of the exhaust system. Catalytic reactors and particle filters must reach a specific temperature in order to effectively perform their functions. The temperature they obtain decreases with the increasing distance from the exhaust manifold, as the gases cool along the way. The performed research consisted of measuring the exhaust gas temperature in various places of the exhaust system in simulated driving conditions mapped on the dynamic engine brake station in the aspect of using a particulate filter and its resulting operating efficiency due to the temperature. Measuring the temperature using thermocouples allowed to assess the probability of achieving full operation of the filters during urban and extra-urban exploitation in a simulation of real driving conditions.

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2019, 20, 6; 263-267
1509-5878
2450-7725

Pojawia się w:

Autobusy : technika, eksploatacja, systemy transportowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

Research on the ammonia concentration in the exhaust gas of the self-ignition engines
Badania stężeń amoniaku w spalinach silników z zapłonem samoczynnym

Autorzy:

Gis, W.
Żółtowski, A.
Grzelak, P.

Powiązania:

https://bibliotekanauki.pl/articles/134110.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

ammonia
Selective Catalytic Reduction
SCR
Laser Diode Spectrometer
LDS
Fourier Transform Infrared Analyzer
FTIR
amoniak
selektywna redukcja katalityczna
spektometr laserowo-diodowy
analizator podczerwieni z transformacją Fouriera

Opis:

In the article there was reviewed the principle of operation of the SCR type catalitic reactors and explained the reason, why ammonia appears in the exhaust gas. The principles of analyzers to measure the concentrations of ammonia in the exhaust gases was reviewed. There were examined changes in EU regulations on the emissions of vehicles engines in comparison to UNECE Regulation No. 49, series 05 of amendments.
W artykule przedstawiono zasadę działania reaktorów katalitycznych typu SCR oraz wyjaśniono przyczynę, dla której w spalinach pojawia się amoniak. Dokonano przeglądu zasady działania analizatorów do pomiarów stężeń amoniaku w spalinach. Przeanalizowane zostały zmiany wprowadzone w rozporządzeniach UE dotyczących emisji zanieczyszczeń z układów wylotowych silników pojazdów w porównaniu z Regulaminem EKG ONZ nr 49, seria 05 poprawek.

Źródło:

Combustion Engines; 2013, 52, 3; 575-580
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 99.

Tytuł:

Termodinamicheskaja vozmozhnost povyshenija ehffektivnocti DVS
Thermodynamics possibility of increase of efficiency of combustion engines

Autorzy:

Podznoev, G.
Abdulgazic, U.
Zharik, T.

Powiązania:

https://bibliotekanauki.pl/articles/77937.pdf

Data publikacji:

2014

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

diesel engine
thermodynamics
combustion engine
exhaust gas
kinetics
pollutant emission

Źródło:

Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 1
1730-8658

Pojawia się w:

Motrol. Motoryzacja i Energetyka Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 100.

Tytuł:

Reduction emission level of harmful components exhaust gases by means of control of parameters influencing on spraying process of biofuel components for aircraft engines

Autorzy:

Jankowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/245547.pdf

Data publikacji:

2011

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

transport
aircraft engines
alternative fuels
fuel atomization
exhaust gas emissions

Opis:

The aim of the research is to test the fuel additives which decrease dimensions of atomised fuel drops, by applying changes to the specific parameters which impact the atomisation process. Those parameters include density, surface tension, viscosity and the viscosity index. Dimensions of drops of biofuels are much bigger compared to hydrocarbon fuels. By modifying the physical and chemical parameters of biofuels, dimensions of drops in an atomised fuel stream should become smaller. Those dimensions play a major role for the level of emissions of hydrocarbon and carbon monoxide, as well as mainly nitrogen oxides and particulates. The research on emissions of toxic components of fuel is relatively advanced today in the field of piston combustion engines, especially for use in car vehicles. However, the dynamic development of the air transport brings more pressure on the issue of toxic emissions in the case of aircraft engines. The level of toxic emissions from aircraft engines may be from ten up to even several thousand times greater than the level of emissions from piston engines. The issue of how biofuel additives can affect the process of fuel atomisation and thus enable the control over the atomisation to obtain the smallest possible drops leading to reduced nitrogen oxides emissions is a new and original issue. The reduced nitrogen oxides emissions in the case of biofuels is of utmost significance because, according to latest knowledge, those levels are increasing.

Źródło:

Journal of KONES; 2011, 18, 3; 129-134
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

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