Skocz do pozycji: 1.

Tytuł:

Analysis of application of chosen methods for tdc determination in marine diesel engines

Autorzy:

Łutowicz, M.

Powiązania:

https://bibliotekanauki.pl/articles/245396.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
transport
marine diesel engine
indication
TDC

Opis:

In the operating marine diesel engines the indication diagnostics tests are usually performed through a 0.5-1.0 me ter long indication channel which delays and disfigures the pressure signal being measured. the delay depends on the engine 's speed and load. the pressure sensor itself together with an amplifler is an additional source of delay and disfigurements, so the registered pressure curve is displaced even if theTDC piston's position hadbeen estimated with the highest accuracy. when the over exploited engine is being tested the angle of delay can achieve several degrees and differ for each cylinder. in that case cylinders' load is unequal and torsional vibrations occur in the engine operation. in case when some simplifying assumptions have been adopted the part of diagnostic information is lost what could lead to a false diagnosis. in the paper the attention is focused on the mistakes which could be made in the marine diesel engine diagnostics when different TDC assessment methods are used. TDC corrections with compression pressure analysis are possible only in case when crankshaft angle position is precise. in case of measurement with constant frequency such corrections are possible only when the engine is good balanced.

Źródło:

Journal of KONES; 2009, 16, 4; 301-306
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Impact analysis of internal catalyst converter on operating parameters of VW 1.9 TDI engine

Autorzy:

Haller, P.
Jankowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/242517.pdf

Data publikacji:

2014

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

catalyst
diesel engine
emissions

Opis:

The largest amount of air pollutants is produced by the combustion of fossil fuels (coal, lignite, petroleum, natural gas, etc.). Such combustion releases huge amounts of greenhouse gases into the atmosphere (including carbon oxides (CO, CO2), sulphur oxides (SO2, SO3), nitrogen oxides (NO, NOx)) and dust, ashes and soot. Transportation is a significant share of the air pollution, mainly wheel-based transportation. The combustion process in diesel engine is very complex physico-chemically and varies in time. The process is accompanied by simultaneous exchange of heat and mass and chemical reactions. The development of internal combustion engines is made towards meeting of the increasingly stringent requirements for toxic exhaust emissions, reduction of fuel consumption, and preservation of Earth's natural resources. The problem to solve in modern diesel engines is the emission of toxic compounds. One way to reduce emissions is to use a catalytic converter positioned directly in the combustion chamber of an internal combustion engine. The aim of this analysis is assessment of toxic emissions of a diesel engine with an internal catalyst. Qualitative assessment of engine emissions was determined by comparing test results of an engine with ceramic-ally coated valves against one with just conventional valves (commercial valves - without a ceramic coating). The study utilized a fourcylinder 1.9 TDI VW engine. It was expected that the use of glow plugs with an active coating would reduce the release of toxic compounds.

Źródło:

Journal of KONES; 2014, 21, 1; 99-106
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Ozonization influence on energy and ecological characteristics of locomotive diesel engine

Autorzy:

Golubenko, A.
Nozhenko, E.
Mogila, V.
Vasiljev, I.
Ignatiev, O.

Powiązania:

https://bibliotekanauki.pl/articles/375037.pdf

Data publikacji:

2008

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

diesel engine
fuel gas

Opis:

The results of preliminary experimental research of ozonized fuel influence on working characteristics of diesel engine. The decrease of fuel consumption on 1,1% and exhaust opacity lessening of exhaust gases by working on ozonized fuel on 12-17% are discovered.

Źródło:

Transport Problems; 2008, 3, 4; 39-46
1896-0596
2300-861X

Pojawia się w:

Transport Problems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Use of lube oils in terms of the structural composition of marine piston engines

Autorzy:

Łosiewicz, Z.
Kamiński, W.

Powiązania:

https://bibliotekanauki.pl/articles/359391.pdf

Data publikacji:

2013

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

diesel engine
lube oil
diagnostics

Opis:

Lube oil is applied in a number of its functional solutions for modern engines. Therefore, when application changes are implemented, simultaneously, the existing diagnostic methods should be improved. The authors have attempted to analyze the existing trends of lube oil application as a diagnostic tool and have proposed their solution.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 114-117
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: 5.

Tytuł:

Thermal loads of engines for different properties of commercial fuels

Autorzy:

Sroka, Z. J.
Reksa, M.
Miksiewicz, K.

Powiązania:

https://bibliotekanauki.pl/articles/243852.pdf

Data publikacji:

2008

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
thermal loads
fuels

Opis:

It is oblivious, various properties of fuels cause different thermal loads of engines. Question is, how big is this effect and what fuel compound and its property play insignificant part. This paper is focused on problem of quality of diesel commercial fuels in Polish market and it is a challenge to find answer for question mentioned above. The academic staff from Wroclaw University of Technology organized tests with different commercial fuels. Chemical and physical properties of these fuels were studied and used for investigation to define relationships between them and thermal load during simulation process. All researches were done in the lab of Division of Motor Vehicles and Internal Combustion Engines at the Wroclaw University of Technology. Tests have showed differences in chemical and physical properties of fuels, but there is no statistics effect on engine parameters. Results have not also pointed any important differences in thermal loads of engine VW1,9 TDI and its components according to different physical and chemical properties of tested fuels. It is probably because there are differences of calorific values from one side but from other hands various density and specific fuel consumption compensated these differences. To burn unit of fuel contains higher level of oxygen, engine needs lower amount of air, so it gives, for the same fuelling system, lean mixture. It causes higher temperature of exhaust gases and a bit higher exhaust losses

Źródło:

Journal of KONES; 2008, 15, 2; 463-467
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Wear profile of the cylinder liner in a motor truck diesel engine

Autorzy:

Koszałka, G.
Niewczas, A.

Powiązania:

https://bibliotekanauki.pl/articles/244295.pdf

Data publikacji:

2007

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
wear
cylinder liner

Opis:

The paper presents results of investigation of cylinder liners wear. The investigation was carried out on diesel engines during long lasting operation in 5 motor trucks. Cylinder diameters were measured in two perpendicular planes on four depths using 2-point bore gauge, after removal of the cylinder head. Measurements were made every 50 000 km of vehicle mileage. Such methodology of measurements enabled to determine time course and wear profile of the cylinder liners (wear value in relation to the direction and height of the liner). It was stated that increments of diameter during the first period of operation are several times higher than during the later periods, when the wear intensity is constant. It was also found that wear of the cylinder liner in the plane perpendicular to the engine axis is bigger than in the parallel plane, and that wear in the upper part of the liner is twice as big as in its middle part. Measurement scheme for the cylinder liner; histogram of cylinder liner diameters obtained in measurements after the technological running-in of the engine after mileage of 0, 50,000 km, 150,000 km and 250,000 km, wear profiles of cylinder liners in the two directions at different vehicle mileages are presented in the paper. Estimated profiles of the cylinder liner wear will be used as input data for the calculations of the blowby intensity with the use of mathematical model of PRC set.

Źródło:

Journal of KONES; 2007, 14, 4; 183-190
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Alternative fuels for diesel engines

Autorzy:

Caban, J.
Gniecka, A
Holeša, L.

Powiązania:

https://bibliotekanauki.pl/articles/103241.pdf

Data publikacji:

2013

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

biofuel
diesel engine
eco-fuels

Opis:

This paper presents the development and genesis of the use of alternative fuels in internal combustion ignition engines. Based on the analysis of the literature, this article shows various alternative fuels used in Poland and all over the world. Furthermore, this article describes the research directions for alternative fuels use in road transport powered by diesel engines.

Źródło:

Advances in Science and Technology. Research Journal; 2013, 7, 20; 70-74
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

A comparative assessment of operating characteristics of a diesel engine using 20% proportion of different biodiesel diesel blend

Autorzy:

Ramalingam, Senthil
Rajendran, Silambarasan
Ganesan, Pranesh

Powiązania:

https://bibliotekanauki.pl/articles/243735.pdf

Data publikacji:

2019

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

biodiesel diesel blend
performance
emission
diesel engine

Opis:

The objective of the present work is to find out the viable substitute fuel for diesel and control of pollutants from compression ignition engines. Therefore, in this present investigation an attempt has been made to study the effect of 20% proportion of five different biodiesel diesel blend in diesel engine. The 20% proportion of biodiesel such as Jatropha, Pongamia, Mahua, Annona and Nerium and 80% of diesel and it is denoted as J20, P20, M20, A20 and N20 are used in the present investigation. The experimental results showed that the brake thermal efficiency of the different biodiesel blend is slightly lower when compared to neat diesel fuel. However, N20 blend, have shown improvement in performance and reduction in exhaust emissions than that of other biodiesel diesel blends. From, the experimental work, it is found that biodiesel can be used up to 20% and 80% of diesel engine without any major modification. The conducted experiments were conducted on a four cylinder four stroke DI and turbo charged diesel engine using biodiesel blends of waste oil, rapeseed oil, and corn oil with normal diesel. The peak cylinder pressure of the engine running with bio diesel was slightly higher than that of diesel. The experiments were conducted on a four cylinder four stroke diesel engine using bio diesel made from corn oil.

Źródło:

Journal of KONES; 2019, 26, 1; 127-140
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

An effect of physical and chemical properties of commercial diesel fuels on engine parameters

Autorzy:

Sroka, Z. J.
Reksa, M.
Kułażyński, M.

Powiązania:

https://bibliotekanauki.pl/articles/242752.pdf

Data publikacji:

2007

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion engine
diesel engine
engine fuels engine performances

Opis:

This paper is focused on problem of quality of diesel commercial fuels in Polish market and an effect of their properties as well on engine parameters as environment The academic staff from Wrocław University of Technology put the own experience to the huge discussion by making research in the Wroclaw-city, where some probes of fuels were taken from six different commercial fuel stations. Chemical and physical properties of fuels were checked. A real diesel engine VW 1,9 TDI was investigated in university lab of Division of Motor Vehicles and Internal Combustion Engines. Typical engine performances were built including power, torque, fuel consumption, toxicity levels due to different fuels. The IC engine on the test bench, oxygen content in fuels, example of full load performance of VW1,9 TDI for fuel Bio D20-type, differences of mean effective pressure for different fuels, differences of carbon monoxide in exhaust for different fuels, differences of nitric oxides in exhaust for different fuels, differences of smog level in exhaust for different fuels, differences of heat release for different fuels, relation between engine torque and oxygen content in fuels vs. engine rotation are presented in the paper.

Źródło:

Journal of KONES; 2007, 14, 4; 447-452
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

A fatigue testing method of wet cylinder liner of diesel engines

Autorzy:

Kaźmierczak, A.
Kolanek, Cz.

Powiązania:

https://bibliotekanauki.pl/articles/247871.pdf

Data publikacji:

2007

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion engine
diesel engine
cylinder liner
fatigue

Opis:

It has been agreed to call the loads changing with time and acting in most varied constructional arrangements as well as the stresses accompanying them changeable or cyclic. Changeable stresses produce in the material a very complex entanglement of phenomena and changes depending on the value of those stresses and on the number of cycles. These are fatigue phenomena and changes. They develop successively till the element has been destroyed. This is called the element material fatigue. Thus changing loads and stresses are also called fatigue loads and stresses. The purpose of the presented work was to develop a method of comparative investigations for wet replaceable sleeves in direct contact with coolant that have been submitted to technological treatment of sub-edge zone material strengthening. The source of loads is a cyclically occurring normal component of gas and mass forces in the cylinder. The frequency of changes is a derivative of the number of strokes in the engine run and of the rotational speed of the crankshaft. Fatigue loads can be the reason why cylinder liner cracks in the edge zone. The results of the fatigue testing of the technological process of strengthening the cylinder lines sub-edge zone on crack sensitivity shows differences in the behaviour of particular samples, depending on the parameters of strengthening. The fatigue testing method can be used to evaluate the technological process of cylinder liner.

Źródło:

Journal of KONES; 2007, 14, 3; 287-290
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Nowe wyzwanie dla silników Diesla - helikopter!
New challenge for the Diesel engine - the helicopter!

Autorzy:

Pągowski, Z. T.

Powiązania:

https://bibliotekanauki.pl/articles/213755.pdf

Data publikacji:

2008

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

silnik Diesla
helikopter
diesel engine
helicopters

Opis:

Maksimum światowego wydobycia ropy naftowej ocenia się na rok 2020 i nikt nie ma wątpliwości, że tania ropa się skończyła. Dnia 2 stycznia 2008 roku cena baryłki ropy przekroczyła 100 USD! W ślad za wzrostem cen ropy wzrastają ceny paliw lotniczych. Zmienia się także spojrzenie na system transportu gwałtownie oddziaływujący na środowisko naturalne. Dynamicznie rozwijające się lotnictwo potrzebuje paliw o zmodyfikowanych własnościach i stabilnych źródłach. Wzrasta zainteresowanie użyciem General Aviation, zainteresowanie paliwami alternatywnymi i nowymi ekologicznymi i ekonomicznymi sposobami napędu. Na celowniku zastosowania pojawia się ponownie w historii lotnictwa silnik Diesla, który zaczyna być obiektem zainteresowania w lekkich samolotach i helikopterach. Różni się on oczywiście znacznie, w wyniku ewolucji jaką przeszedł na przestrzeni lat w komunikacji samochodowej i znajduje znowu pierwsze zastosowanie w konstrukcjach samolotów, helikopterów od konstrukcji bezpilotowych po lekkie śmigłowce. W artykule omówione zostały silniki aktualnie wkraczajace na ten rynek zastosowaii obejmujące konstrukcje zarówno europejskie jak np. silniki Thielert zbudowane na bazie 4-suwowych silników samochodowych Mercedesa, jak i spoza Europy, jak np. 2-suwowe specjalnie konstruowane jako lotnicze silniki Delta Hawk, z którymi autor publikacji zapoznał się w czasie pobytu w firmie Delta Hawk w USA. Przedstawione zostaną również idee ewolucyjnego rozwoju silników typu "emission close to zero" w oparciu o tzw. jednolite paliwo o nowych zmodyfikowanych własnościach w oparciu tzw. zintegrowany proces termochemiczny oraz najnowsze rewolucyjne rozwiązania.
Maximum of world oil extraction is estimated to be in the year of 2020 and no one can doubt that the cheap oil is over. On 2 January 2008 the price per barrel of oil exceeded $100! In the wake of high fuel prices the aviation fuel prices are rising. Changes will also look at the transport system is rapidly affecting the environment. Dynamically developing aviation needs fuel with modified properties and stable sources. There is an increasing interest in General Aviation in their use, interest in alternative fuels and new environmental and economic means of propulsion. Targeted application appears again in the history of aviation — the diesel engine, which becomes the object of interest in light airplanes and helicopters. It obviously differs considerably as a result of what has evolved over the years in the car and communication is again the first in the construction of airplanes, helicopters, from the pilotless designs to design of the light helicopters. The engines currently being discussed in this paper and entering into aircraft market applications, including both: the European structures such as the Thielert engines built on an automotive engine four stroke Mercedes, as well as outside Europe, such as two-stroke, specially designed as an aircraft Delta Hawk engine, with which the author met during stay at Delta Hawk firm in the US. Presented will be also the ideas about evolutionary development engines such as "emission close to the zero" on the basis of the so-called the new, uniform modified fuel properties on the basis of so-called integrated termochemical process and the latest revolutionary solutions.

Źródło:

Prace Instytutu Lotnictwa; 2008, 3-4 (194-195); 74-82
0509-6669
2300-5408

Pojawia się w:

Prace Instytutu Lotnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

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: 13.

Tytuł:

The effect of diesel fuel mixture and camelina oil ester on selected parameters of combustion process

Autorzy:

Orliński, P.

Powiązania:

https://bibliotekanauki.pl/articles/243639.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

camelina oil ester
combustion
diesel engine

Opis:

This paper presents the results of comparative research into basic physical and chemical properties of pure diesel fuel and two types of mixtures: Camelina oil ester (Camelina oil ester content in the mixture was 10% and 15%) and diesel fuel. Camelina oil ester was used to show that it can also be used as an additive plant to diesel fuel (according to the plans of the European Union). Similarly to on a large scale used ester of rapeseed oil. The base fuel in the research was clean diesel fuel (without the addition of ester as in the case of diesel fuel available at petrol stations).The use of fuels with different physical and chemical properties to supply the diesel engine and the use of measuring equipment used for determining the parameters of fast-changing operation resulted in the determination of the operating medium average pressure during the combustion process. On the basis of the experimental pressure characteristics of heat release were identified. Analysis of these characteristics determined the proportion of total combustion phases of kinetics and diffusion, depending on the type of fuel and operating conditions. Finally, the paper shows that the fuel with different physicochemical properties has a significant effect on the combustion process. A comparative assessment of the suitability of tested mixtures for operational use was made.

Źródło:

Journal of KONES; 2013, 20, 3; 291-298
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Residual stresses assessment in the marine diesel engine crankshaft 12V38 type

Autorzy:

Król, K.
Wikło, M.
Olejarczyk, K.
Kołodziejczyk, K.
Siemiątkowski, Z.
Żurowski, W.
Rucki, M.

Powiązania:

https://bibliotekanauki.pl/articles/244853.pdf

Data publikacji:

2017

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
crankshaft
simulation
residual stress

Opis:

In the paper, the measurement of the marine diesel engine crankshaft residual stresses is presented. The hole drilling strain gauge was chosen because of its simplicity and low cost. Moreover, deflection calculation was made for the load corresponding to its weight and the concentrated force in the chosen bearing conditions. Deflection of the journal and bending rigidity under the concentrated force was calculated as well. In that case, the crankshaft was supported in the neighbouring crank journals. The reduced stresses were calculated according to the Huber – Mises hypothesis. The residual stresses were measured in the marine diesel engine crankshaft type 12V38 after the finishing, with the hole-drilling method. It was found that the residual stresses reach the maximal value of 86 MPa, but for 50% of measuring points, the residual stresses did not exceed the value of 20 MPa. The squeezing stresses were found to be dominant. The measurement results provided important data for further consideration, especially for the correction of the bending deformation of the produced crankshaft.

Źródło:

Journal of KONES; 2017, 24, 2; 117-123
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Improved method of processing the output parameters of the diesel locomotive engine for more efficient maintenance

Autorzy:

Zvolenský, Peter
Barta, Dalibor
Grenčík, Juraj
Droździel, Pawel
Kašiar, Ľubomír

Powiązania:

https://bibliotekanauki.pl/articles/1841741.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

maintenance
locomotive
diesel engine
control parameters

Opis:

Modernization of aged rolling stock is one of the possibilities to adapt it to the current requirements for better environmental friendliness and economy of railway transport. However, some vehicle upgrades lead to new failures that were not observed in the original vehicles. The cause is the so-called “hybrid design”, built on a combination of original and selected new components. The aim of the work was to improve the situation with frequent failures and unavailability that occur on the modernized locomotive where a new diesel engine and new electronic control system was installed. Within the work, a simplified methodology for evaluating the outputs of diagnostic equipment was developped based on and applied to specific locomotive type and its diesel engine. The methodology resulted in a significant reduction of the time for assessing the condition of the vehicle’s diesel engine and more effective maintenance. The paper also presents other possibilities in the analysis of big data in the maintenance of rolling stock e.g. using fuzzy logic.

Źródło:

Eksploatacja i Niezawodność; 2021, 23, 2; 315-323
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Impact analysis of air humidity on operating parameters of diesel engine

Autorzy:

Haller, P.
Jankowski, A.
Kolanek, C.
Magdziak-Tokłowicz, M.
Wróbel, R.

Powiązania:

https://bibliotekanauki.pl/articles/246293.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

humidity
diesel engine
efficiency
engine power
engine torque

Opis:

A major problem in the combustion diesel engines is the different distribution of the mixture of air and fuel and also temperatures inside the combustion chamber. It helps the formation of points of the high and low oxygen concentration in the combustion chamber of the engine. In areas with a high concentration of oxygen, the combustion process produces very harmful NOx, and in places with low oxygen concentration, as a result of incomplete fuel combustion particles are created in the form of soot. This not regular distribution of the mixture of air and fuel and temperatures in the combustion chamber affect the limited maximum engine power and efficiency at his every operating cycle. One method for improving the combustion process is feeding into the engine air with high relative humidity. The study was conducted on a chassis dynamometer at the Department of Vehicles Engineering Wroclaw University of Technology. For the purposes of the study determined the external characteristics, including maximum engine power and maximum engine torque at different air relative humidity and quite similar air temperature. Analysis of the results of research shows that high air relative humidity has a positive effect on the work parameters of the diesel engine.

Źródło:

Journal of KONES; 2015, 22, 3; 37-42
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Simulation prediction of operational parameters of a traction diesel engine with sequential rurbocharging at selection of turbochargers
Symulacyjne przewidywania parametrow pracy trakcyjnego silnika wysokopreznego z doladowaniem zakresowym przy doborze turbosprezarek

Autorzy:

Danilecki, K.

Powiązania:

https://bibliotekanauki.pl/articles/791980.pdf

Data publikacji:

2011

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

combustion engine
diesel engine
radial compressor
radial turbine
sequential turbo-charging
traction diesel engine
operational parameter
turbocharger

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

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Skocz do pozycji: 18.

Tytuł:

Issue of changes in technical states of a Diesel engiene as the result of wear of its tribological systems

Autorzy:

Girtler, J.

Powiązania:

https://bibliotekanauki.pl/articles/359783.pdf

Data publikacji:

2012

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

load
technical state
diesel engine
wear

Opis:

The paper shows a necessity to consider the processes of load on and wear of tribological systems in Diesel engines (and therefore the changes in their states) in real conditions as random processes. This means that mathematical models for these processes can be random functions with an argument which is time (t) and with values which are random variables such as loads and wear of particular tribological systems. The load properties for the tribological systems have been presented as the main causes of their failures. It has been signaled that a stochastic dependence should be expected between mechanical load and thermal load, whose the intensity (force) can be defined by Czuprow’s convergence coefficient. A proposal has been submitted to accept that the tribological system load in Diesel engines is a stationary process with asymptotically independent increments. The reasons for this proposal have been presented in the form of relevant hypotheses and an exemplary graph of changes in pressure and temperature in an engine cylinder under operation. Also it has been signaled that the models of wear processes in tribological systems may be stochastic processes with special properties called semi-Markov processes. The wear properties for these systems have been explained in the form of relevant hypotheses.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 31 (103); 77-82
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: 19.

Tytuł:

The influence of the shape of the combustion chamber on exhaust gases toxicity in T370 engine

Autorzy:

Kalina, P.
Kawalec, M.

Powiązania:

https://bibliotekanauki.pl/articles/243782.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
combustion chamber
geometry
toxicity

Opis:

An important issue in construction of combustion chamber in compression-ignition engines is proper selection of its shape and size. Both features are dependent on several factors such as fuel injector location and angle, spray atomizer selection (amount of holes, their diameter and angular position), location of inlet valve and air turbulence. By doing research on prototype engine T370, an analysis of influence of combustion chamber size and its modifications going towards lip construction on flue gas toxicity was done. The diameter and depth of combustion chamber was being changed while maintaining the same compression ratio. After that, a modification of tested combustion chambers was made by creating so called “lip”, which aim was to create a swirl of injected fuel in the vertical plane. To visualize the changes in swirl, a numerical analysis of fuel injection into combustion chamber was made. In discussed study, emission tests were performed according to ECE-R49. During the research six combustion chambers with diameters 60, 63 and 66 mm (and their modification) were investigated. Tests were performed for several types of injectors and different injection timing. However, for analysis of combustion chamber size the results are presented for the same injectors but with optimized injection timing.

Źródło:

Journal of KONES; 2015, 22, 2; 104-108
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Comperative analysis of emision from engine fuelled with diesel and bio-diesel

Autorzy:

Koszałka, G.
Hunicz, J.
Kordos, P.

Powiązania:

https://bibliotekanauki.pl/articles/242081.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
alternative fuel
bio-diesel
exhaust emissions

Opis:

The paper presents comparative analysis of operational parameters, smoke emission and toxic components contents in exhaust gases of a compression ignition engine fuelled with fossil diesel, commercial bio-diesel (fatty acid methyl ester) and their blend. Measurements were conducted on an older generation diesel engine equipped with in-line injection pump. Engine was operated in conditions of full load rotational speed characteristic and also ESC steady-state test cycle. Fourier Transform Infrared (FTIR) analytical system provided contents of 23 exhaust gas components. In particular chosen parameters of investigated fuels (on the base of quality reports), performance and fuel consumption characteristic versus rotational speed, smoke emission (D) and content of carbon monoxide (CO), unburned hydrocarbons (THC) and nitrogen oxides (NOx), sulphur dioxide (S02) and carbon dioxide (CO2) in exhaust gas of the engine fuelled with investigated fuels, emission of specific hydrocarbons of the engine fuelled with investigated fuels, of non-regulated compounds measured during the research, molar mass of analyzed exhaust compounds are presented in the paper.

Źródło:

Journal of KONES; 2009, 16, 3; 165-171
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Dual - fuel low power generator with diesel engine using alternative fuels

Autorzy:

Imiołek, M.
Piętak, A.
Imiołek, A.

Powiązania:

https://bibliotekanauki.pl/articles/246549.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

alternative fuels
diesel engine
dual-fuel engine
biofuels

Opis:

At the moment, there is a growing interest in low-power generating units in dispersed system. The production of energy in small units located in the vicinity of the energy recipients offers considerable benefits. First and foremost, it lowers the cost of energy production and the cost of its transfer and also makes the recipient independent from the domestic supplier. Small cogeneration aggregates will facilitate the use of energy from dispersed renewable resources. Gas self-ignition engines in cogeneration system powered with biofuels can be used in construction industry as ecological sources of heat and electrical energy, limiting the need for fossil fuels. This paper presents the possibility of using alternative fuels for internal combustion engines. It describes the possibility of using liquid biofuels separately or natural gas fuel to power diesel engines in dual fuel system. The conception of supplying low-power generator with diesel engine with natural gas to a dose of liquid biofuels test case. Pointed to the factors determining the desirability of a particular concept. Indicated the modification of the engine power to supply the natural gas generator with a dose of liquid biofuels. New technologies of extracting and using biofuels and alternative fuels are being introduced and developed for generating heat and electric energy. Studies on the use of gas and liquid alternative fuels are directly linked to research on the production of renewable and alternative energy as well as environment protection by minimizing emissions of toxic substances into the atmosphere.

Źródło:

Journal of KONES; 2012, 19, 3; 171-176
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Elastyczność silnika ANDORIA 4CTi90
The flexibility of an engine ANDORIA 4CTi90

Autorzy:

Prajwowski, K.
Stoeck, T.

Powiązania:

https://bibliotekanauki.pl/articles/314207.pdf

Data publikacji:

2011

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

silnik Andoria
silnik wysokoprężny
Andoria engine
diesel engine

Opis:

W artykule opisana jest elastyczność silnika ANDORIA 4CTi90 obliczona na podstawie rzeczywistej charakterystyki prędkościowej ściągniętej na hamowni silnikowej AVL Dynoperform 160 w Katedrze Eksploatacji Pojazdów Samochodowych w Zachodniopomorskim Uniwersytecie Technologicznym w Szczecinie (była Politechnika Szczecińska).
In the article a flexibility of ANDORIA 4CTi90 engine is described which was calculated on speed characteristics taken or AVL Dynoperform 160 dynamometer in Faculty at Motor Vehicles Exploitation of West Pomeranian University of Technology, Szczecin (former Technical University of Szczecin).

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2011, 12, 5; 340-344
1509-5878
2450-7725

Pojawia się w:

Autobusy : technika, eksploatacja, systemy transportowe

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 23.

Tytuł:

A comparison of selected operating parameters of the diesel engine fuelled with mixtures of diesel oil or liquid bio - fuel and natural gas for low - power generators

Autorzy:

Boruta, G.
Imiołek, M.

Powiązania:

https://bibliotekanauki.pl/articles/241789.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
dual-fuel engine
biofuels
alternative fuels

Opis:

Following the modern fuel market, one can notice that prices of liquid petroleum derivatives - petrol and diesel oil - which most often fuel piston internal combustion engines are increasingly higher. Similarly, the price of petroleum-derivative gas (LPG - the liquefied petroleum gas - simply speaking, a mixture of propane and butane) is also growing. Many academic and industrial institutions of science conduct research to determine whether it is possible to replace liquid petroleum-derivative fuels with some other potentially cheaper ones. It would also be beneficial if these new fuels were more "ecological" - so that their combustion products would not be harmful for the environment and if they were produced with the use of plants. Fuel stations commonly offer a fuel for diesel engines which is a mixture of fatty acids methyl esters (FAMEs) from vegetable oils, in Poland for instance from rape seeds. The paper presents a comparison of selected operating parameters of the Hatz 1B40 engine fuelled with mixtures of diesel oil or liquid bio-fuel and natural gas. Indicator diagrams, exhaust gases composition and vibration signals recorded on the engine body were analyzed. The study was conducted on the Hatz 1B40 diesel engine which is used among others in FOGO power generator sets, after replacing the original feeding system by common rail system for liquid fuels and after adding natural gas feeding system.

Źródło:

Journal of KONES; 2012, 19, 4; 111-116
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

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: 25.

Tytuł:

A method for evaluating theoretical and real operation of diesel engines in energy conversion formulation taking into account their operating indices

Autorzy:

Girtler, J.

Powiązania:

https://bibliotekanauki.pl/articles/260600.pdf

Data publikacji:

2011

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

operation
energy
diesel engine
ship’s main engine

Opis:

The article proposes valuating the operation of an arbitrary diesel engine, based on the sample case of a ship’s main engine in which energy conversion processes take place in a given time. The above operation is understood as the energy transfer to the screw propeller in the given time in which the energy conversion into work and/or heat and its further transmission take place. The here proposed method for evaluating the operation of the main engines installed in marine power plants consists in comparing the operation of these engines to a physical quantity the measuring unit of which is the joule-second (joule×second). A new term is introduced which bears the name of the theoretical engine operation and is the standard (ideal) operation which can be compared to the operation of real engines revealing different levels of wear. It was shown that the calculations of the theoretical operation defined in the above way cannot make direct use of commonly known theoretical Diesel and Sabathe cycles. Instead they should use the cycles modified by heat abstraction taking place in accordance with the isobaric, or isothermal process. Other new terms introduced in the article are: the degree of excellence of energy conversion to work, considered as the measure of excellence of engine operation, and the degree of engine operation dissipation, being the measure of its real operation. It is shown that if in time t of engine operation the case takes place that: Li = idem and Le = idem, then the engine operation dissipation is equal to its mechanical efficiency.

Źródło:

Polish Maritime Research; 2011, 3; 31-36
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Application of optimisation for determining the external charakteristics of a traction diesel engine with sequential turbocharging
Zastosowanie optymalyzacji do wyznaczania charakterystyki zewnetrznej trakcyjnego silnika wysokopreznego z doladowaniem zakresowym

Autorzy:

Danilecki, K.

Powiązania:

https://bibliotekanauki.pl/articles/793081.pdf

Data publikacji:

2011

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

combustion engine
sequential turbo-charging
optimization
external characteristics
diesel engine
traction diesel engine
injection pump
Hooke-Jeeves method
engine speed

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: 27.

Tytuł:

The analysis of the energy balance of the engine powered by diesel oil mixture with butanol

Autorzy:

Sitnik, L. J.
Andrych-Zalewska, M.

Powiązania:

https://bibliotekanauki.pl/articles/247462.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
fuels
dense alcohols
energy balance

Opis:

The development of motorisation involves using bigger amounts of fuels. These fuels are, until now, mainly petroleum. However, the fuels of bio origin must be used as well. It follows from the necessity of ensuring CO2 balance and from the fact that oil sources sooner or later will become exploited. Not less important is the fact that, principally, it is difficult to change the proportions of petrol and diesel oil extracted from crude oil, and the use of diesel oil increases proportionally faster than petrol. Therefore, it is necessary to use bio additives in diesel oil. One of such additives is dense alcohols. The aim of the present work is to determine the energy balance of diesel engine powered by diesel oil and butanol mixture. The work field includes making of energy balance of the engine in its characteristic points responsive 13 phase ESC test as well as determining on this basis the consolidated values concerning the differences in the engine energy balance. It has been proved, that powering the engine by mineral diesel oil with doped butanol (20% v/v) does not lead to essential differences in the energy balance of the engine- which does not mean, that the essential differences are absent in the particular characteristic points of the engine. It requires more detailed explanation (in the further research works) because losses in the combustion process do not show differences, but in the other balance components the differences are shown.

Źródło:

Journal of KONES; 2015, 22, 4; 269-273
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Snišenie koncetracii oksidov azota v otrabotavših gazah Dizelej rybolovnogo flota
The reduction of nitrogen oxide in exhaust gases of fishing fleet Diesel engines

Autorzy:

Klyus, O.
Klyus, I.

Powiązania:

https://bibliotekanauki.pl/articles/360499.pdf

Data publikacji:

2013

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

diesel engine
nitrogen oxide
preliminary fuel treatment

Opis:

The article presented the results of the reduction of nitrogen oxide in exhaust gases of Diesel engines used in fishing boats and vessels. For this purposes was used preliminary fuel treatment that takes place directly in the fuel injector and mixture of Diesel oil with water.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 35 (107); 86-89
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 29.

Tytuł:

Decomposition of harmonic wavelets of torsional vibrations as basis for evaluation of combustion in compression-ignition engines

Autorzy:

Dereszewski, M.
Drewing, S.

Powiązania:

https://bibliotekanauki.pl/articles/243609.pdf

Data publikacji:

2018

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diagnostics
diesel engine
torsional vibrations
signal processing

Opis:

The aim of analysis presented in the article is results of measurements of torsional deflections of a crankshaft of three-cylinder internal combustion diesel engine. The wavelets of the run of torsional twists were processed by decomposition to harmonics using FFT. In order to exactly recognize all dynamic aspects of gas forces acting during working stroke, decomposition was done in two ways: first one relaying on records encompassing one working cycle (two revolutions), the second one based at separated periods encompassing angular an interval from TDC (Top Dead Centre) of one cylinder to TDC of subsequent in firing order. For three-cylinder engine, width of the interval is 240 degrees of crank angle. In order to obtain reliable results, torsional deflection signals acquisitions were recorded numerous times including changes of outer conditions (temperature, atmospheric pressure) and different values of the engine loads. The main goal of conducted experiments was looking for an answer of a question if exist any differences between frequency spectrums of harmonics of run of full cycle ( two revolutions) and the same cycle divided by three separate intervals. Analysis was conducted in order to state any possibility of diagnostic signals acquisition caused by abnormalities of combustion process. Results were presented in form of comparison of frequency spectra taken from full cycle and divided intervals.

Źródło:

Journal of KONES; 2018, 25, 3; 129-135
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

The possibility of use a waste product of biofuels production-glycerol as a fuel to the compression ignition engine

Autorzy:

Grab-Rogaliński, K.
Szwaja, S.

Powiązania:

https://bibliotekanauki.pl/articles/243807.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

glycerol
alternative fuel
diesel engine
combustion properties

Opis:

The article presents results of tests performed in a combustion research unit (CRU) with the two following fuels: light fuel oil (LFO) and glycerol. The CRU is a constant volume combustion chamber machine equipped with an injection system based on that used in common-rail diesel engines with electromagnetic injectors. This machine allows to compare various combustion properties between fuels for specified parameters of injection and a combustion chamber as well. As it is known glycerol is a substance which is obtained from several technological processes such as production of biofuel thus in this way it can be treated as an alternative renewable fuel. The glycerol is characterized by low heating value of 16MJ/kg and relatively high density of 1261 kg/m3. However, its heating value by volume is higher if compared to other liquid fuels. From that reason decrease in energy that can be delivered with fuel is smaller which is approximately 16% lest than for LFO. The parameters measured during this research were: pressure increase, rate of pressure increase (ROPR), ignition delay (ID), main reaction delay (MRD), main combustion period (MCP), end of main combustion (EMC), end of combustion (EC), position of max ROPR (PMR) and max ROPR. The tests were performed with different injection parameters such as injection pressure, injection duration and injection delay as well as under various conditions in the CRU combustion chamber expressed by pressure and temperature. On the basis of these tests the comparison between LFO and glycerol was done. The results were presented in diagrams. The research shows that glycerol used as a fuel, to obtain the same output power, should be injected at higher amounts. Glycerol as a fuel cannot ignite itself, hence to provide combustion the pilot injection of another fuel have to be applied.

Źródło:

Journal of KONES; 2016, 23, 3; 157-164
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Potential non-toxic aqueous emulsion as a diesel fuel

Autorzy:

Haller, P.
Jankowski, A.
Kolanek, C.
Walkowiak, W.

Powiązania:

https://bibliotekanauki.pl/articles/244342.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

emulsions
water
diesel engine
nitrogen oxides
emissions

Opis:

Natural processes occurring on Earth (fires, volcanic eruptions) and human activity in the area of acquisition and processing of energy, is the cause of the continuous contaminating the atmosphere of combustion products. The combustion of fuels is and will be in the near future primary means of generating energy, including for transportation purposes. Transport is the cause of many environmental threats - emits dust and particles along with many of gaseous harmful substances and also noise and vibration. Power sources used for transport are almost exclusively equipped with internal combustion engines, among which is dominated by a diesel engines. In view of the known advantages of these motors such as high efficiency and relatively low emissions of toxic compounds in the exhaust gas, they have been accepted as the most preferred source of power motor vehicles in the coming decades, assuming that meet the requirements of future regulations regarding environmental protection. The problem to be solved in internal combustion engines is the emission of nitrogen oxides. In this paper are contained an overview of proven methods and results in the reduction of nitrogen oxides in exhaust gases by means of emulsion fuels, and forming an opinion concerning of the usefulness of such solutions in the future.

Źródło:

Journal of KONES; 2015, 22, 3; 43-48
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Stężenie i rozkład wymiarowy cząstek spalin silników Diesla w powietrzu w garażu
Concentration and size distribution of Diesel fume particles in garage air

Autorzy:

Jankowska, E.
Pośniak, M.

Powiązania:

https://bibliotekanauki.pl/articles/179374.pdf

Data publikacji:

2010

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

silnik Diesla
spaliny
diesel engine
exhaust gases

Opis:

W artykule przedstawiono wyniki badania stężeń i rozkładu wymiarowego cząstek spalin silników Diesla w powietrzu w trzech przypadkach powszechnie występujących podczas prac wykonywanych w garażu. Podano również wyniki badania stężenia masowego w odniesieniu do frakcji wymiarowych cząstek PM10, PM2,5, PM1, PM0,5 i PM0,25. Badania wykazały, że spaliny z silników Diesla zawierają przede wszystkim cząstki drobne: 95-99% cząstek poniżej 2,5 µm; 91-98% poniżej 1 µm; 87-96% poniżej 0,5 µm i 66-77% cząstek poniżej 0,25 µm.
This article presents the results of an investigation of the concentrations and size distribution of particles of Diesel fumes suspended in the air in three cases common during work done in a garage. The article also presents the results of an investigation of mass concentrations in relation to size fraction particles PM10, PM2.5, PM1, PM0.5 and PM0.25. Investigations showed that Diesel fumes contained first of all fine particles: 95-99% particles below 2.5 µm, 91-98% below 1 µm, 87-96% below 0.5 µm and 66-77% particles below 0.25 µm.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2010, 1; 23-27
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Selected physicochemical properties of water-fuel microemulsion as an alternative fuel for diesel engine

Autorzy:

Górska, Milena
Bukrejewski, Paweł
Stobiecki, Jerzy

Powiązania:

https://bibliotekanauki.pl/articles/262891.pdf

Data publikacji:

2019

Wydawca:

Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji

Tematy:

microemulsion
alternative fuel
diesel engine
environmental protection

Opis:

The paper focuses on the assessment of selected physicochemical properties of microemulsion containing 5% by mass (m/m) of surface active compounds (SAC), i.e. Span20 and Crilet4 as well as 10% (m/m) of distilled water dispersed in diesel fuel (DF). In particular temperature dependent properties such as: flash point (FP) and cold filter plugging point (CFPP) as well as lubricity, friction coefficient, corrosiveness and kinematic viscosity of tested fuels were examined. It was found that the tested surfactants and water added to DF increase microemulsion FP by 13ºC. For this reason, it can be stated that tested microemulsion is safer than typical DF. On the other hand it was found that the CFPP of the tested microemulsion is also adequately higher. It means less usefulness of such fuel during winter periods. Based on the research results it can be stated that addition of tested surfactants slightly worsens the lubricity of DF. However, the same surfactants in the presence of dispersed water reduce the friction in the tribological node and improve the lubricity of the tested microemulsion. Research showed that tested microemulsion system is not corrosive as well as its kinematic viscosity meet requirements of EN590 standard. Based on all these findings, microemulsion is considered as safe and such fuel can be recommended for engine tests without the risk of its damage.

Źródło:

Archiwum Motoryzacji; 2019, 84, 2; 45-56
1234-754X
2084-476X

Pojawia się w:

Archiwum Motoryzacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

The effect of diesel/ethanol blends on variations of selected combustion parameter

Autorzy:

Lotko, W.
Smigins, R.
Górski, K.

Powiązania:

https://bibliotekanauki.pl/articles/242253.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

misfire detection
diesel engine
combustion process
ethanol

Opis:

This paper presents and discusses selected research results of the diesel engine fuelled with blends of: diesel oil (DO), synthetic ethanol (ET) as oxygenated additive and small quantity of fatty acid methyl esters (FAME) used as emulsifier. Content of ethanol in diesel oil was changed in wide range (up to 50%). Addition of 5% by vol. Of FAME was constant for each tested mixture. Preliminary tests were focused on influence of fuels blends composition on its combustion process. The main analyzed parameter was mean indicated pressure and its unrepeatability index. Research suggests that diesel oil blended with up to 20% of ethanol can be successfully used for diesel engines feeding. Higher ethanol content in mixture with diesel oil is unfavourable because misfire phenomenon occurs immediately. In this case tested engine works unstable with extremely high toxic gases emission. Some physical properties of tested fuels, measurement system configuration, Values of mean indicated pressure vs. cycle number for AD3.152 engine fuelled with: pure diesel oil, ETIO, ET20, ET30, ET 40, ET50, Variations of unrepeatability index of mean indicated pressure in relationship to kind of tested fuels are presented In the paper. Research shows that tested engine is not possible to operate with using above 40% of ethanol content in diesel oil, as the fuel simply will not ignite.

Źródło:

Journal of KONES; 2009, 16, 2; 279-284
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

The influence of diesel oil improvers on indices of atomisation and combustion in high-efficiency engines

Autorzy:

Pielecha, I.
Pielecha, J.
Skowron, M.
Mazanek, A.

Powiązania:

https://bibliotekanauki.pl/articles/259914.pdf

Data publikacji:

2017

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

diesel oil
diesel engine
improvers
fuel injection
fuel combustion

Opis:

The process of fuel combustion in a diesel engine is determined by factors existing during liquid fuel injection and atomisation. The physicochemical properties of the fuel to a large extent decide upon the quality of this phase of cylinder fuelling. So it is important to ensure appropriate properties of a fuel affecting its atomisation and, as a result, combustion. The paper deals with the topic of diesel oil improvers and the analysis of their influence on atomisation and combustion indices. In the studies base diesel oil and a diesel fuel improved by a package of additives, were used. The process of conventional and improved fuel injection was analysed by using optical examinations. The amount of released heat was evaluated during the studies carried out on combustion. Significant aspects of the applied improvers in relation to fuel injection and its combustion have been indicated.

Źródło:

Polish Maritime Research; 2017, 3; 99-105
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Premixed combustion of acetylene-hydrogen fuel mixtures for thermodynamic state generation in a constant volume combustion vessel

Autorzy:

Johnson, S.
Nesbitt, J.
Lee, S. -Y.
Naber, J. D.

Powiązania:

https://bibliotekanauki.pl/articles/242374.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion engine
diesel engine
combustion processes
pressure vessel
preborn

Opis:

Flammability limits and flame speeds of dilute-lean fuel mixtures of hydrogen (H2) and acetylem premixed with oxygen (02) and nitrogen (N2) were examined with a detailed kinetics model. These mixtures are used in a preburn in a constant volume combustion vessel to create elevated temperatures and pressures with gas compositions that represent the thermodynamic state in a diesel engine combustion chamber at fuel injection and auto ignition. A mixture of hydrogen and acetylene with combined atomic hydrogen to carbon ratio (HCR) of 1.85 was used to match that of typical diesel fuel and results are shown in comparison to a previously used mixture with a HCR of 1.17. The lower flammability limit (LFL) of the HCR 1.85 fuel mixture was found at an equivalence ratio of 0.235, while flame speed and adiabatic combustion temperatures were also predicted for post preburn product oxygen levels between O and 21 percent. Flame speeds were shown to decrease with a reduction in oxygen concentration, an increase in nitrogen dilution, while combustion temperatures increased over most of this range. Trends for this relation of flame speed and temperature are presented and a new premixed fuel mixture with an HCR of 1.85 is proposed.

Źródło:

Journal of KONES; 2009, 16, 2; 199-208
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Experimental Investigation on Indicated Pressure and Heat Release for Direct Hydrogen Injection in a Dual Fuel Diesel Engine

Autorzy:

Siadkowska, Ksenia
Barański, Grzegorz
Sochaczewski, Rafał
Wendeker, Mirosław

Powiązania:

https://bibliotekanauki.pl/articles/2201773.pdf

Data publikacji:

2022

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

diesel engine
direct hydrogen injection
dual fuel
combustion engine

Opis:

This paper presents the research results for a diesel and hydrogen fueled engine. The research object is a four-cylinder, four-stroke ADCR engine with a displacement of 2,636 cm3. In the experiments, glow plugs were replaced with compressed hydrogen injectors and a special adapter. Hydrogen was supplied directly into a combustion chamber using a test injector. A hydrogen dose in the tests was changed at selected test points and ranged from 0 to 160 dm3/min. The research were conducted at 1,500 rpm. A hydrogen injection start angle and maximum hydrogen dose were specified from the preliminary experiments. The following parameters were analyzed: indicated mean effective pressure, maximum pressure, crank angle of maximum cylinder pressure occurrence and heat release. The obtained results were statistically analyzed. The conducted analysis focused on determining whether there are significant differences between early and late injection and how these changes affect the measured parameters.

Źródło:

Advances in Science and Technology. Research Journal; 2022, 16, 3; 54--66
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

FEM Simulation of Different Engine Mount Models in an Aircraft Piston Diesel Engine

Autorzy:

Magryta, Paweł
Pietrykowski, Konrad
Borowiec, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/2204049.pdf

Data publikacji:

2022

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

engine mount
diesel engine
aircraft
FEM
finite element method

Opis:

The article presents the results of numerical simulations using the FEM (Finite Element Method) of the engine mount strength for mounting an aircraft diesel engine with opposite pistons called PZL-100. Four versions of the mount prepared by aircraft engine producer WSK "PZL-Kalisz" company were analyzed. Tests were performed in Catia v5 software in the Generative Structure Analysis module. The boundary conditions were engine gravity force, propeller thrust force, and propeller torque. S235JR steel was defined as the material. A design grid with tetrahedral elements with a single element size of 2 mm was used. As part of the simulation study, four structural solutions for the test engine mounts were calculated in terms of strength. The results of stress maps and the magnitude of deformation of the mount elements were compared. Based on the obtained results, one of the mount versions was recommended for actual fabrication.

Źródło:

Advances in Science and Technology. Research Journal; 2022, 16, 5; 230--241
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Termodinamicheskaja vozmozhnost povyshenija ehffectivnosti DVC
Thermodynamics possibility of increase of efficiency of combustion engines

Autorzy:

Podznoev, G.
Abdulgazis, Y.
Zharik, T.

Powiązania:

https://bibliotekanauki.pl/articles/78218.pdf

Data publikacji:

2013

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

combustion engine
diesel fuel
exhaust gas
diesel engine
pollutant emission
heat regeneration

Opis:

A thermodynamic analysis of the possibility of catalytic reforming of water emulsified diesel fuel by the heat of the exhaust gases. The results indicate the potential for a significant increase in efficiency of a diesel engine with a substantial improvement in the quality of the kinetics and combustion and a significant reduction of pollutant emissions in the exhaust gases. Calculations confirmed a significant reduction in consumption of primary diesel fuel, while maintaining the amount of useful work

Źródło:

Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 5
1730-8658

Pojawia się w:

Motrol. Motoryzacja i Energetyka Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 40.

Tytuł:

Zużycie i możliwość diagnozowania wybranych elementów układu wtryskowego silników okrętowych
The wear and the possibility of condition monitoring of selected elements of injection system of marine diesel engines

Autorzy:

Bejger, A.

Powiązania:

https://bibliotekanauki.pl/articles/327678.pdf

Data publikacji:

2006

Wydawca:

Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN

Tematy:

emisja akustyczna
układ wtryskowy
zużycie
silnik wysokoprężny
silnik okrętowy
acoustic emission
injection system
wear
diesel engine
marine diesel engine

Opis:

W artykule przedstawiono typowe rodzaje zużycia układu wtryskowego na tle innych układów funkcjonalnych silników okrętowych. Przedstawiono możliwość zastosowania sygnałów emisji akustycznej (EA) do diagnozowania procesu wtrysku. Wykazano, że w częstotliwości około 12 - 16 kHz można wyodrębnić "czyste" sygnały odzwierciedlające pracę wtryskiwacza i układu przepłukania. Częstotliwość rzędu 8 - 16 kHz bardzo dobrze uwidacznia procesy tribologiczne zachodzące w pompie wtryskowej.
Typical wear cases of fuel injection system, in confrontation with other main functional systems of the marine diesel engine are presented in the paper. The possibility of apply the acoustic emission signals for condition monitoring of injection process and the operation of injection pump and injector are presented. There is shown, that in the frequency of 12 - 16 kHz is possibility to separate signals depended from operation and condition of injector and scavenge. The frequency of 8 - 16 kHz superbly reflect the tribological processes of fuel injection pump.

Źródło:

Diagnostyka; 2006, 4(40); 47-50
1641-6414
2449-5220

Pojawia się w:

Diagnostyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

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: 42.

Tytuł:

Improving physical properties of rape biofuels

Autorzy:

Kiernicki, Z.

Powiązania:

https://bibliotekanauki.pl/articles/102549.pdf

Data publikacji:

2012

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

alternative fuel
diesel engine
fuel composition
FAME
polyolefin

Opis:

The researches on the use of biodiesel and fuel derived from waste plastics are presented in the paper. Biodiesel and fuel obtained from waste plastics were both used as fuel components. FAME is a bio-admixture in the fuel. The catalytic cracking of polyolefin was the source of second fuel admixture. The physical properties of the analyzed components of fuel have been presented. The operational parameters of direct injection in diesel engines fuelled by tested fuel blends was set out. The preparation of the fuel mixture was also described. The concept of the diesel fuel which is made from the components of opposite physical properties could have a positive practical effect and could improve the use of biofuels.

Źródło:

Advances in Science and Technology. Research Journal; 2012, 6, 16; 48-54
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

The application of non-converted vegetable oils in contemporary self-ignition engines

Autorzy:

Reksa, M.

Powiązania:

https://bibliotekanauki.pl/articles/245366.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion engines
vegetable oils
diesel engine
alternative fuels

Opis:

The paper presents a test of a self-ignition engine equipped with high-pressure fuel-dosing system based on injection units with electronic control system. The engine was fuelled with conventional fuel and few kinds of non-converted vegetable oil. The analysis of the experiment results correlated with knowledge of their properties shows the important conclusions about possibilities, disadvantages and perspectives of the fuels usage in contemporary engines equipped with electronic control fuel-dosing system. The vegetable oils have a special place in history of automotive industry. In 1900 a great event on Word Trades in Paris was compression-ignition engine fuelled by groundnuts oil — a masterpiece of no one else like Rudolf Diesel. R. Diesel, aware of conventional fuels limitation, patented in 1892 a vegetable oil as a fuel. The NOx concentration in exhaust was measuredfor maximum engine speed (1900 rpm). The lowest emission ofmeasured compounds was observed in case of sunflower oil and rape oil "Biedronka" (65% and 75% of emission during engine work fuelled by conventional diesel oil). The highest values were detected for post frying palm oil and rape oil "Aldi" (120% of emission during engine work fuelled by conventional diesel oil).

Źródło:

Journal of KONES; 2009, 16, 4; 385-391
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Biogas as a fuel for diesel engines

Autorzy:

Wierzbicki, S.

Powiązania:

https://bibliotekanauki.pl/articles/246845.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

biogas
methane
diesel engine
dual-fuel supply system

Opis:

The pursuit of reduced greenhouse gas emissions, as well as the increased share of renewable fuels in the overall energy balance has led to a search for alternative energy sources. One of the fuels on which great hopes are set as fuel for engines is biomethane or biogas, whose main component is methane. Biogas can be obtained from different products by using different technologies, so that it has potential as a widelyavailable fuel, which is quite easy to produce. The percentage of methane in biogas depends on the technology for obtaining biogas and ranges from 35% to around 75%. The largest biogas sources can be animal farms, where it is obtained from animal excrement. Another source is sewage treatment plants and rubbish dumps, where substantial quantities of biogas are obtained as a result of natural processes occurring in waste dumping sites or sewage. Biogas can also be acquired from waste obtained from fruit and vegetable processing as well as waste from meat plants. This paper examines the possibility of using biogas as a fuel for diesel engines. In these engines, the combustion of biogas (methane) requires the application of a dual-fuel supply system in which liquid fuel initiating gas fuel selfignition will be injected into the combustion chamber along with methane. The paper also contains example results showing the effect of the methane dose on the course of the combustion process in diesel engines.

Źródło:

Journal of KONES; 2012, 19, 3; 477-482
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Research of usage of RRME and alcohol biofuel mixture in diesel engine

Autorzy:

Lebedevas, S.
Lebedeva, G.
Žaglinskis, J.

Powiązania:

https://bibliotekanauki.pl/articles/246865.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

biodiesel
biofuel
diesel engine
environmental and energy parameters

Opis:

The paper provides the results of an integrated research of the energy, environmental performance and traction indicators and the characteristics of fuel feed and performance of A41, 2F511, VALMET 320 DMG and Audi 1Z highspeed, direct-injection diesel engines when converting their operation from mineral diesel D to the fatty acid esters (RRME and RRBE) and alcohol biodiesel mixtures. The researches are carried out in cooperation of the Lithuanian and Polish partners within the framework of joint scientific projects under EUREKA international scientific program „E!4018 CAMELINA-BIOFUEL”. In the light of the new EU initiatives („White Paper” 2011), 30% optimum part of RRME bio-component in the mixture with D (B30) is validated for practical use. The characteristics of fuel supply and heat generation in a diesel cylinder are under investigation; an explanation of a significant reduction in the harmful component emission (EG) and 2 to 4% increase in the fuel efficiency in case of use of B30 and B10 biodiesels is offered. The presence of the ethanol alcohol component 9E) in D-RME-E and RME-E biofuel mixtures resulted in reduction of CO and NOx emission by 10 to 12% and EG smokiness - by 20% per each 10% increase of E part. The indicated efficiency of performance was increased by 2-2.5%. The indicators of cyclic instability did not exceed the corresponding indicators in diesel operation on D. It is established that the motor properties of tested B30 and B50 biofuels based on butanol and rapeseed oil butyl ester RBE are similar to RME biodiesels and have important advantages over them: the complete solubility of alcohol component and the possibility of B30 (D-RBE) use at ambient temperature up to -30 centigrade. The motor characteristics of the second-generation biodiesels produced from the non-food raw material (Camelina Sativa oil methyl esters) are highly competitive with and even exceed by separate indicators the similar indicators of certified RME biodiesels. It is demonstrated that the conversion of diesels, including the automobile diesels with EGR electronic system, to operation on D-RRME (RME, CSME) biodiesels does not require the change of regulation characteristics of the fuel-feed system. The test of the oxidation stability of D-RME and D-CSME biodiesels performed under operating conditions on S. Lebedevas, G. Lebedeva, J. Žaglinskis VALMET 320 DMG marine diesel proved the stability of the motor, energy, and environmental performance indicators for 7-8 months' biodiesel storage without the addition of antioxidant and for 13-14 months' storage - with the addition of Ionol BS200 antioxidant.

Źródło:

Journal of KONES; 2012, 19, 2; 289-304
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Regeneracja współczesnych wtryskiwaczy paliwowych silników o zapłonie samoczynnym
Repair contemporary Diesel engine injectors

Autorzy:

Osipowicz, T.
Stoeck, T.

Powiązania:

https://bibliotekanauki.pl/articles/311040.pdf

Data publikacji:

2013

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

wtryskiwacz
silnik ZS
regeneracja
injector
diesel engine
repair

Opis:

W artykule przedstawiono sposoby naprawy współczesnych wtryskiwaczy paliwowych silników o zapłonie samoczynnym. Przedstawiono wszystkie rodzaje wtryskiwaczy paliwowych silników wysokoprężnych, oraz ich klasyfikację na naprawialne i nienaprawialne i procedury ich regeneracji oraz testowania.
Paper describes the methods of repair the contemporary diesel engine injectors. Article puts forward all kinds of Diesel engine injectors, classify on repair and not to repair and discusses the procedures of repairing and testing.

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2013, 14, 10; 210-212
1509-5878
2450-7725

Pojawia się w:

Autobusy : technika, eksploatacja, systemy transportowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Monitoring of torsional vibration of a crankshaft by instantaneous angular speed observations

Autorzy:

Dereszewski, M.

Powiązania:

https://bibliotekanauki.pl/articles/242907.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diagnostics
diesel engine
torsional vibrations
torque
angular speed

Opis:

Continuous monitoring of diesel engine performance under its operating is critical for prediction of malfunction development and subsequently functional failure detection. Analysis of Instantaneous angular Speed (IAS) of the crankshaft is considered as one of non-intrusive and effective method of detection of combustion quality deterioration. The paper contains presentation of attempt of monitoring of piston engine’s crankshaft torsional vibrations by measurement of Instantaneous Angular Speed at free and power output ends of the engine. It is assumed that calculation of differential value of angular distance run between both ends in the same time shall give the picture of torsion angle magnitudes and phases of the peak values. Fir carrying out such measurements, high frequency of sampling was required. The angular speed measurements is to be done utilising two optical sensors for reading and two perforated discs mounted at shaft’s ends playing the role of speed signal emitters. In the paper is presented description of the measurement system and explanation of its mode of work. It is also shown analysis of measurement accuracy, way errors elimination and method of signals runs filtration. Presented results of experiment derives from test cycle carried out using laboratory stand of Gdynia Maritime University equipped with 3- cylinder self - ignition engine, powering electric generator.

Źródło:

Journal of KONES; 2016, 23, 1; 99-106
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Problems of modelling toxic compounds emitted by a marine internal combustion engine in unsteady states

Autorzy:

Rudnicki, J.
Zadrąg, R.

Powiązania:

https://bibliotekanauki.pl/articles/259322.pdf

Data publikacji:

2014

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

technical diagnostics
diesel engine
dynamic processes
neural network

Opis:

Contemporary engine tests are performed based on the theory of experiment. The available versions of programmes used for analysing experimental data make frequent use of the multiple regression model, which enables examining effects and interactions between input model parameters and a single output variable. The use of multi-equation models provides more freedom in analysing the measured results, as those models enable simultaneous analysis of effects and interactions between many output variables. They can also be used as a tool in preparing experimental material for other advanced diagnostic tools, such as the models making use of neural networks which, when properly prepared, enable also analysing measurement results recorded during dynamic processes. The article presents advantages of the use of the abovementioned analytical tools and a sample application of the neural model developed based on the results of examination carried out on the engine research rig.

Źródło:

Polish Maritime Research; 2014, 4; 57-65
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

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: 50.

Tytuł:

Reducing Diesel Engine Emission using Reactivity Controlled Approach

Autorzy:

Ghazal, O. H.

Powiązania:

https://bibliotekanauki.pl/articles/124927.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

CFD
dual fuel
RRCI engine
green cars
emissions
diesel engine

Opis:

Several automobile manufacturers are interested in investigating of dual fuel internal combustion engines, due to high efficiency and low emissions. Many alternative fuels have been used in dual fuel mode for IC engine, such as methane, hydrogen, and natural gas. In the present study, a reactivity controlled compression ignition (RCCI) engine using gasoline/diesel (G/D) dual fuel has been investigated. The effect of mixing gasoline with diesel fuel on combustion characteristic, engine performance and emissions has been studied. The gasoline was injected in the engine intake port, to produce a homogeneous mixture with air. The diesel fuel was injected directly to the combustion chamber during compression stroke to initiate the combustion process. A direct injection compression ignition engine has been built and simulated using ANSYS Forte professional code. The gasoline amount in the simulation varied from (50%-80%) by volume. The diesel fuel was injected to the cylinder in two stages. The model has been validated and calibrated for neat diesel fuel using available data from the literature. The results show that the heat release rate and the cylinder pressure increased when the amount of added gasoline is between 50%-60% volume of the total injected fuels, compared to the neat diesel fuel. Further addition of gasoline will have a contrary effect. In addition, the combustion duration is extended drastically when the gasoline ratio is higher than 60% which results in an incomplete combustion. The NO emission decreased drastically as the gasoline ratio increased. Moreover, addition of gasoline to the mixture increased the engine power, thermal efficiency and combustion efficiency compared to neat diesel fuel.

Źródło:

Journal of Ecological Engineering; 2018, 19, 1; 94-103
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 51.

Tytuł:

Influence of fuel pollutants on operating parameters of contemporary fuel injector

Autorzy:

Osipowicz, T.
Stoeck, T.
Gołębiewski, W.

Powiązania:

https://bibliotekanauki.pl/articles/247182.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

fuel injector
diesel engine
common rail injection systems

Opis:

Article describes the operation issues of contemporary injection systems of Diesel engines. Common-rail system has been used since 1997, and since then there has been a significant evolution in its construction. In this aspect, there are changes in generations of high-pressure injection pumps and fuel injectors as well as methods of steering them, but exploitation problems are the same. The most prone to malfunction elements of the system are the fuel injectors. Their task is to distribute and to spray of the fuel in the combustion chamber of engine. Common Rail fuel injectors generate few injection dosages in the one work cycle. The rate of injection is depended on the design of the steering valve. One very important parameter of fuel injector is fuel injection delay time. If the time from control start of fuel injector to begin injection is shorter then it causes generation of greater number of injection dosages. Pollutants in fuel in the form of various amorphous solids of the size an even few microns cause the decrease of operating parameters of injector, which adversely affects the operation of the engine. Article shows contemporary fuel injectors, the methods of their examination, the types of fuel pollutants and their impact on fuel injector work.

Źródło:

Journal of KONES; 2015, 22, 3; 169-174
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 52.

Tytuł:

Comparison of indicator and heat release graphs for vw 1.9 tdi engine supplied diesel fuel and rapeseed methyl esters (RME)

Autorzy:

Cisek, J.

Powiązania:

https://bibliotekanauki.pl/articles/247568.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

RME
FAME
indicator diagrams
heat realise
diesel engine

Opis:

The results of investigation of 1,9 TDI engine (285 Nm, 85 kW, type AJM without any modification) equipped with injection units supplied conventional diesel fuel (ON) or B100 fuel (RME) have been presented in article. Investigations have been realized at the engine speed of 2000 rpm and variable load within the range of 0 to 275 Nm. The pressure, temperature and heat release velocity runs have been subjected to analysis. Particular attention has been paid to the release of the heat used for the effective work and internal energy increase of the working medium (enthalpy) during combustion inside the engine cylinder versus the crank angle for both investigated fuels. It was found among the others that mentioned fuels differ in the heat release, heat velocity and the maximal combustion temperature, which for the B100 fuel is bigger than for the conventional diesel fuel. Bigger combustion dynamics of tested biofuel (compared with standard diesel fuel) results higher concentrations of Nitrogen Oxides NOx in exhaust gases. The easiest way is of course the use of the later start of fuel injection biofuels and/or increase the exhaust gas recirculation EGR. These treatments, however, result in a worsening of the energy performance of the engine. It was concluded also that the combustion of RME works properly at higher engine loads. Then reduce the negative difference between the combustion of biofuel (RME) and standard Diesel fuel.

Źródło:

Journal of KONES; 2013, 20, 4; 71-78
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 53.

Tytuł:

Method for modelling temperature distribution in exhaust system of diesel engine in the light of mine systems of heat recuperation

Autorzy:

Chuchnowski, W.
Tokarczyk, J.
Stankiewicz, K.
Woszczyński, M.

Powiązania:

https://bibliotekanauki.pl/articles/242169.pdf

Data publikacji:

2011

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

recuperation
diesel engine
Peltier's cell
temperature distribution
CFD

Opis:

Analysis of temperature distribution and heat flow in the exhaust system of diesel engine to determine technical parameters of the system for heat recuperation and changing of thermal energy into electric energy was presented. Temperature of exhaust gases as well as geometrical and material features of exhaust system were the input data accepted for modelling. Computational Fluid Dynamics (CFD) was used to determine temperature distribution in the exhaust system. The software by use numerical methods finite volume method) enables solving partial differential equations consisting of equations of: continuity, Navier-Stokes, Fourier-Kirchoff and complemented with other equations important as regards the discussed phenomenon (e.g. with turbulences models)transforming them in the algebraic equations or common differential equations. CFD software enables gaining some information as regards flow rate, distribution of speed field, and pressure field as well as heat flow, temperature field and mass field. Design and principle of operation of Peltier 's cell, model of recuperator, exhaust system, and diesel engine, finite elements meshing, boundary conditions assumed in analysis of exhaust gases and water flow, distribution of temperature field (maximal temperature of scale 335 K and maximal temperature of scale 400 K) on external wall of exhaust system and cross-section of exhaust system are presented in the paper.

Źródło:

Journal of KONES; 2011, 18, 2; 101-108
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 54.

Tytuł:

Processing of long lasting signals of torsional vibrations measured using incremental encoders

Autorzy:

Dereszewski, M.
Sikora, G.

Powiązania:

https://bibliotekanauki.pl/articles/243279.pdf

Data publikacji:

2018

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diagnostics
diesel engine
torsional vibrations
torque
angular speed

Opis:

The article describes processing method of a signal, coming from torsional deflections of an internal combustion piston engine’s crankshaft, registered using two optical encoders ETNP-10. Standard measurement and recording set ETNP-10 enables recording of Instantaneous Angular Speed values encompassing 10 revolutions of the crankshaft, what is equal to 5 cycles of four-stroke engine. That time duration is sufficient for analysis of changes of angular speed caused by, for example, malfunction of fuel injection valve, but is insufficient in case of observation characterized by low frequency changes with period of fluctuations, lower than 0.8 sec. Short time for recording makes impossible following of instantaneous angular speed deviations caused by magnitude modulation of engine’s load value. In the article is presented an algorithm written in MATLAB environment, which allows processing of the data recorded using the recorder DAS 1600 Sefram. The recorded this way signals have around 26 seconds' duration of engine work. Data acquired from two encoders mounted at opposite sides of the shaft, in form of square magnitude signals are transformed into instantaneous speed and subsequently to instantaneous angular shift, what is basis for torsions calculation. In the article is also presented method of elimination of systematic error due to assumed method of averaging. Finally, some examples of results of torsional deflection measurement and analysis are presented.

Źródło:

Journal of KONES; 2018, 25, 4; 59-65
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 55.

Tytuł:

The effect of Pt active coating application inside diesel engine on polycyclic aromatic hydrocarbons (PAHS) emission

Autorzy:

Janicka, A
Walkowiak, W.
Szczepaniak, W.

Powiązania:

https://bibliotekanauki.pl/articles/244056.pdf

Data publikacji:

2008

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

active coating
catalyst
polycyclic aromatic hydrocarbons
diesel engine

Opis:

Application of active coating inside of an self-ignition engine may have an important impact on several stages of combustion process: fuel cracking, fore-flame phase, combustion phase and secondary combustion phase [7]. Investigations of such construction are very rare in the literature - especially of hydrocarbons emission. Polycyclic aromatic hydrocarbons (PAHs) are known to have mutagenic and carcinogenic effect on humans [2, 6, 7]. One of the most important anthropogenic sources of these substances is motorization (especially diesel engines). The paper presents results of measurements of PAHs emissions from SB3.1 self-ignition engine with Pt active coating application inside. The catalyst was applied on engine valves surface. Zirconium ceramic was chosen as a coating for catalyst application (also because of its thermo-insulating properties). Because of unstable parameters of self-ignition engine work (pressure and temperature jumps), PAHs were extracted from two phases: gas phase and solid phase (particle matter - PM). A chromatographic method of PAHs identification and analysis, because of their low level of concentration in exhaust gases, needed to be supported by sample purification and enrichment stages [40]. It has been found that a significant decrease of total toxic polycyclic aromatic hydrocarbons concentration in engine exhaust gases for engine with Pt catalyst application. The catalyst application causes also changes in relative concentrations of polycyclic aromatic hydrocarbons.

Źródło:

Journal of KONES; 2008, 15, 2; 131-136
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 56.

Tytuł:

The influence of RME on mass and number concentration of nano PM in exhaust gases from a diesel engine

Autorzy:

Cisek, J.

Powiązania:

https://bibliotekanauki.pl/articles/244532.pdf

Data publikacji:

2014

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

nanoparticles
mass
number concentration
FAME
RME
diesel engine

Opis:

Transport is a major source of the particle pollution (PM). Combustion engine particulate emissions have the potential cause adverse health effects. These effects include cancer and other pulmonary and cardiovascular diseases. A substantial proportion of the number of particles, but not the mass, is ultrafine. For example – one million particles of 100 nanometers size with a unit density of 1 g/cm3 have a mass of approximately 0.0005 g. The paper includes research results of mass and number concentration of nanoPM for 1.9 TDI VW exhaust gases fuelled by standard diesel. The measurements were performed for ambient air and 3 different point of engine work (idle speed, low and high load at 2000 rpm). For nanoPM measurements was used Electrical Low Pressure Impactor ELPI from DECATI, was found, among other things, that the biggest mass concentration was at 0.1-10 μm of PM diameter but the biggest number concentration was at 0,01 – 0,1 μm and thus for the size of solid particles of at least an order of magnitude smaller than the mass concentration. The biggest the negative differences in the mass concentration occur in the exhaust gases of the RME fuelled engine (in comparison with diesel fuel) at engine idling when the smallest injection pressure and temperature inside the engine cylinder exist and the oxygen availability is also the lowest (because of the small charging pressure and high EGR rate). Such measurements are important not only in terms of utilitarian but also in cognitive sense – for determining the effect of the engine construction parameters and/or regulating the engine (or the fuel composition) on the mass and the number of nanoparticles emitted in the exhaust gases.

Źródło:

Journal of KONES; 2014, 21, 2; 53-60
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 57.

Tytuł:

Cycle-to-cycle variations of a diesel engine operating with palm biodiesel

Autorzy:

Yasin, M. H.
Mamat, R.
Abdullah, A. A.
Abdullah, N. R.
Wyszynski, M. L.

Powiązania:

https://bibliotekanauki.pl/articles/950092.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

cycle-to-cycle variations
biodiesel
combustion
diesel engine

Opis:

Biodiesel is one of biodegradable and renewable fuel, which is originated from vegetable oil or animal fats. Different fuel properties of biodiesel produce different combustion characteristics which slightly differ to mineral diesel. Combustion studies on palm-biodiesel and mineral diesel were conducted using a multi-cylinder diesel engine operating at medium engine load at 2500 rpm. The engine was water cooled inline four cylinder diesel engines without exhaust gas recirculation system. Cycle-to-cycle variations of peak cylinder pressure and mean indicated pressure of the test fuels were determined for the combustion characteristics of diesel engine. In-cylinder pressure data for the 200 consecutive cycles were determined using a Kistler pressure transducer and recorded into a combustion analyser. Three different engine loads: 20%, 40% and 60% were selected in this study with a constant engine speed of 2500 rpm. The results show that at lower load, in-cylinder pressure variations for palm biodiesel were lower compared to mineral diesel. However, at medium and high loads, palm biodiesel has dominated the peak cylinder variations. Different combustion cyclic variations for mineral diesel and B100 are observed and generally influenced by psychochemical properties differences including viscosity and density of fuel.

Źródło:

Journal of KONES; 2013, 20, 3; 443-450
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 58.

Tytuł:

Impact of acid number of fuels on the wear process of apparatus for fuel injection in diesel engines

Autorzy:

Gil, L.
Pieniak, D.
Walczak, M.
Ignaciuk, P.
Sawa, J.

Powiązania:

https://bibliotekanauki.pl/articles/957985.pdf

Data publikacji:

2014

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

biofuel
acid number
lubricity
injection apparatus
diesel engine

Opis:

Fuels used for diesel engines besides their main function of energy supply act as a lubricant. In this context the most important task is lubrication of precision pairs injection equipment. In this paper lubricating properties of rapeseed oil esters and camelina esters have been compared. Dependency of the electrical resistance and friction coefficient of the lubrication surface using different types of fuel was analyzed. It was stated, that the highest electrical resistance occurs when lubrication is done with diesel fuel, whereas the friction coefficient is the lowest and it occurs at lubrication with camellia esters.

Źródło:

Advances in Science and Technology. Research Journal; 2014, 8, 21; 54-57
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Application of the polynomial interpolation method for determining performance characteristics of a diesel engine

Autorzy:

Stoeck, T.
Abramek, K. F.

Powiązania:

https://bibliotekanauki.pl/articles/221203.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

post measurements
polynomial interpolation
performance characteristics
diesel engine

Opis:

The article shows the methodology and calculation procedures based on Lagrange polynomial interpolation which were used to determine standard performance characteristics of the Polish production engine, type ANDORIA 4CTi90-1BE6. They allow to simplify the experimental research by maintaining a minimum number of measurement points and estimating the remaining data in an analytical way. The methods presented are convenient when it comes to the practical side because they eliminate the need for exploration of mathematical equations describing the various curves, which can be cumbersome and time consuming in the case of nonautomated accounts. The results of analysis were applied to actual experimental results, indicating sufficient accuracy of the resulting approximations. As a result, procedures may be used in bench testing of a similar profile, especially with repeated cycles of the experiment, such as optimization of operating parameters of combustion engines.

Źródło:

Metrology and Measurement Systems; 2014, 21, 1; 157-168
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 60.

Tytuł:

Analysis of potential improvements in the performance of solenoid injectors in diesel engines

Autorzy:

Vrublevskyi, Oleksandr
Wierzbicki, Sławomir

Powiązania:

https://bibliotekanauki.pl/articles/27312775.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

diesel engine
solenoid injector
solenoid valve
electromagnetic circuit

Opis:

Efficient fuel injection and exhaust gas cleaning systems are needed to promote the development of high-performance internal combustion systems and decrease greenhouse gas emissions. Electronically controlled injection systems enable nearly unlimited control over system components whose operation is limited by the inertia of moving parts and other physical phenomena. In the present study, a novel technology for manufacturing magnetic cores was proposed to improve the performance of solenoid injectors in Diesel engines. The conducted simulations and experiments revealed that the developed technology can increase the speed of solenoid injectors. In the proposed solution, the fuel dose was split to effectively control the injection process and improve engine performance.

Źródło:

Eksploatacja i Niezawodność; 2023, 25, 3; art. no. 166493
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 61.

Tytuł:

Impact of defective turbocharging system on the safety and reliability of large marine diesel engine

Autorzy:

Anantharaman, M.
Islam, R.
Sardar, A.
Garaniya, V.
Khan, F.

Powiązania:

https://bibliotekanauki.pl/articles/1841550.pdf

Data publikacji:

2021

Wydawca:

Uniwersytet Morski w Gdyni. Wydział Nawigacyjny

Tematy:

marine power plant
diesel engine
large marine diesel engine
turbocharging system
safety and reliability
Fault Tree Analysis
main engine
maximum continuous rating

Opis:

Today huge capacity sea-going vessels are propelled by mega high-powered marine diesel engines, referred to as Main Engine. Turbocharging system is an integral part of large marine diesel engine plant, contributing to their safety, reliability, and efficiency. Defects in the turbocharging system could result in higher fuel consumption, erratic running of the Main Engine, and in the worst scenario may result in the stoppage of the Main Engine at sea. An inefficient turbocharging system may also cause major damage to turbochargers, resulting in undesirable accidents out at sea. To avoid such undesirable accidents and ensure smooth operations of the Main Engine, it is required to address this concern. The aim of this research is to study the turbocharging system for a large Main Engine using a Kongsberg engine simulator. Various malfunction of the Turbocharging system is considered, relevant data is collected and analysed. Moreover, a Fault Tree Analysis, (FTA) is considered to identify the top undesirable event which is the failure of the Main Engine. Based on the results of this study, various steps are suggested to avoid failure of the Main Engine due to the defective turbocharging system.

Źródło:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 189-198
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: 62.

Tytuł:

Researches of influence kind of piston on some parameters of the S12-U Wola diesel engine

Autorzy:

Jankowski, A.
Kołomecki, J.
Siemińska, B.

Powiązania:

https://bibliotekanauki.pl/articles/246538.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
engine testing
engine piston
composite alloys
emissions
fuel consumption

Opis:

Increased weight and greater requirements, regarding manoeuvring opportunities need extension of the power of combustion engines determining their powertrain units. In case of the family "W" engines, following developmental versions came into existence as a result of the modernization of the earlier version, among others thru the optimization of the combustion process, applying of the supercharging, as well as strengthening of the internal construction, which made it possible to carry greater thermal and mechanical loads. The subjects of the study were pistons made from composite materials of the small hysteresis of the alloy mounted on the S12-U combustion engine. In the novel construction of the piston, the outline of the overcoat was modified, the shape of the combustion chamber, the hole for the piston pin, grooves for the piston rings and shape of internal surfaces remained unchanged. A characteristic feature of the novel piston is the smaller hysteresis of the coefficient of thermal expansion composite alloy, alfa of which the pistons were made, whereas a so-called hysteresis is the difference of the coefficient alfa, which occurs during warming and piston cooling, and takes place during working of the piston in the combustion engine. The smaller hysteresis of the coefficient alfa makes the decreasing clearances between piston and cylinder possible, what has a beneficial influence on work parameters of the combustion engine, especially under conditions of partial loading of the engine. Basic parameters of the engine for the maximum torque characteristics and load characteristics are the object of the paper.

Źródło:

Journal of KONES; 2012, 19, 3; 185-194
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 63.

Tytuł:

Stochastic model of the load spectrum for main engines of sea-going ships

Autorzy:

Girtler, J.

Powiązania:

https://bibliotekanauki.pl/articles/243406.pdf

Data publikacji:

2007

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

semi-Markov process
load
diesel engine
main engine
sea ship

Opis:

The paper presents possibility of applying the theory of semi-Markov processes for probabilistic description of load spectrum for diesel engines employed for ship propulsion, so for main engines. The considerations include output power characteristics for this kind of engines. The characteristics have enabled formulating a four-member set of states of the process of load on the engines. The theory of semi-Markov processes has been applied for describing the real process of loads on the mentioned engines. This theory has made possible building a model of the engine loads in form of a continuous-time semi-Markov process with a four-state set of values. Properties of a Darboux continuous function, which allow considering the engine loads as the discrete-states and continuous-time processes, have been used to build the model. In consequence a limiting distribution of the occurring process of successive states of engine loads could be determined. The distribution is the probabilities of staying a sea-going ship main engine in successive states of load. The distribution is characterized by the spectrum of loads on this kind of engines. The presented model can be developed by taking into account many states of the process of main engines loading as the need is to make such a probabilistic description of the process that provides possibility of rational control of the operating process.

Źródło:

Journal of KONES; 2007, 14, 3; 187-193
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 64.

Tytuł:

Design of novel composite pistons for diesel engine

Autorzy:

Jankowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/247362.pdf

Data publikacji:

2014

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

internal combustion engine
diesel engine
piston engine
composite alloy
combustion engine performance

Opis:

The paper presents the requirements to be met by diesel engines and their components, in particular pistons for engines of military vehicles. These requirements are related to the mass of modern military vehicles, which has greatly increased. Materials for the piston should have a good strength properties and low hysteresis of thermal expansion coefficient α across the range of operating temperatures, good resistance to galling, low abrasion, low coefficient of friction and good functional properties. On the clearance of the piston in the cylinder, the coefficient of thermal expansion α and its hysteresis has a decisive influence. The paper includes information on the piston working clearances, the requirements for pistons materials, their chemical composition, standard materials for the forged pistons, for the cast pistons (silumin alloys) and for the composite pistons. The paper presents the changes in coefficient of thermal expansion for the alloy in the raw state and after heat treatment and pistons made of new composite material prior to motor testing and after these tests. The completed new pistons have a lower coefficient of thermal expansion and lower hysteresis α, which allows reducing the running piston and cylinder clearances with the resulting effects.

Źródło:

Journal of KONES; 2014, 21, 4; 211-216
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 65.

Tytuł:

The effect of aviation fuel JP-8 and diesel fuel blends on engine performance and exhaust emissions

Autorzy:

Labeckas, G.
Slavinskas, S.
Vilutienė, V.

Powiązania:

https://bibliotekanauki.pl/articles/949492.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
jet fuel
diesel fuel
autoignition
combustion
performance
exhaust emissions

Opis:

The article presents bench test results of a four-stroke, four-cylinder, naturally aspirated, DI diesel engine operating with neat JP-8 fuel (J) and its blends with Diesel fuel (D) in following proportions by volume: 90/10 (J+10D), 70/30 (J+D30), 50/ 50 (J+D50), 30/70 (J+D70), and 100% diesel fuel (DF). The purpose of the research was to analyse and compare changes occurred in the autoignition delay, combustion events, engine performance efficiency, emissions, and smoke of the exhaust when running on JP-8 fuel, jet-diesel fuel blends, and diesel fuel at a full (100%) engine load and speed of 1400 min–1 at which maximum torque occurs and rated speed of 2200 min–1. It was found that the start of injection (SOI) and the start of combustion (SOC) occurred earlier in an engine cycle and the autoignition delay decreased by 9.0% and 12.7% due to replacement of aviation JP-8 fuel with diesel fuel at a full load and the latter speeds. Maximum in-cylinder pressure was 6.8% and 4.0% higher when operating with diesel fuel, whereas brake thermal efficiency was 3.3% and 7.7% higher, and brake specific fuel consumption 2.8% and 7.0% lower when using fuel blend J+D50 compared with the respective values measured with neat JP-8 fuel. Emissions of nitric oxide (NO) and nitrogen oxides (NOx) were 13.3% and 13.1% higher from a straight diesel running at speed of 1400 min–1, and 19.0% and 19.5% higher at a higher speed of 2200 min–1. The carbon monoxide (CO) emissions and total unburned hydrocarbons (HC) decreased 2.1 times and by 12.3% when running with fuel blend J+D70 at speed of 2200 min–1 compared with those values measured with jet fuel. Smoke of the exhaust was 53.1% and 1.9% higher when using fuel blend J+D10 than that of 46.9% and 70.0% measured with jet fuel at speeds of 1400 and 2200 min–1. The engine produced 34.5% more smoke from combustion of fuel blend J+D70 at the low speed of 1400 min–1, but smoke converted to be 11.3% lower when operating at a higher speed of 2200 min–1.

Źródło:

Journal of KONES; 2015, 22, 2; 129-138
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 66.

Tytuł:

Optimizacija raboty dizelejj selskokhozjaistvennykh mashin i traktorov
The optimization work of diesels of agricultural machines and tractors

Autorzy:

Chekmenev, V.

Powiązania:

https://bibliotekanauki.pl/articles/78040.pdf

Data publikacji:

2015

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

diesel engine
agricultural machine
tractor
management
regulator
work optimization

Źródło:

Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 1
1730-8658

Pojawia się w:

Motrol. Motoryzacja i Energetyka Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 67.

Tytuł:

The comparative analysis of catalytic properties of Group 11 elements in NOx reduction by hydrocarbons in the presence of oxygen

Autorzy:

Kruczyński, Stanisław W.
Orliński, Piotr
Ślęzak, Marcin

Powiązania:

https://bibliotekanauki.pl/articles/2087018.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

diesel engine
NOx reduction
conversion testing
group 11 elements

Opis:

NOx emission reduction in diesel engines can be achieved by using catalytic reactors reducing nitrogen oxides, including NH3-SCR and possibly also HC-SCR reactors. Reactors using ammonia achieve large conversion rates but cause a lot of operational problems. For this reason, the interest in reactors using hydrocarbons and their derivatives to reduce NOx has increased. Such reactors are the ones using metals from Group 11 (coinage metals) such as Cu, Ag and Au placed on an Al2O3-SiO2 carrier as active materials. The article characterizes the porosity and acidity of the carrier surface. Conversion of NO2, NO and propene as well as the formation of CO and N2O depending on the temperature at constant dosing of propene on a carrier covered with Cu, Ag and Au with a metal content of 4 g/dm3 were evaluated. The results of the tests showed that the tested Group 11 elements can be the basis for further experiments related to the development of this exhaust fumes cleaning technology for diesel engines.

Źródło:

Eksploatacja i Niezawodność; 2022, 24, 2; 170--176
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 68.

Tytuł:

Modeling of thermal cycle ci engine with multi-stage fuel injection

Autorzy:

Jamrozik, A.
Tutak, W.
Gnatowski, A.
Gnatowska, R.
Winczek, J.
Sosnowski, M.

Powiązania:

https://bibliotekanauki.pl/articles/102895.pdf

Data publikacji:

2017

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

thermal cycle
diesel engine
multi-stage fuel injection
CFD

Opis:

This work presents a complete thermal cycle modeling of a four-stroke diesel engine with a three-dimensional simulation program CFD - AVL Fire. The object of the simulation was the S320 Andoria engine. The purpose of the study was to determine the effect of fuel dose distribution on selected parameters of the combustion process. As a result of the modeling, time spatial pressure distributions, rate of pressure increase, heat release rate and NO and soot emission were obtained for 3 injection strategies: no division, one pilot dose and one main dose and two pilot doses and one main dose. It has been found that the use of pilot doses on the one hand reduces engine hardness and lowers NO emissions and on the other hand, increases soot emissions.

Źródło:

Advances in Science and Technology. Research Journal; 2017, 11, 3; 179-186
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 69.

Tytuł:

Impact of rise of exhaust resistance at torque and angular speed of two-stroke engine

Autorzy:

Dereszewski, M.
Charchalis, A.

Powiązania:

https://bibliotekanauki.pl/articles/245462.pdf

Data publikacji:

2015

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diagnostics
diesel engine
exhaust pipe resistance
torque
angular speed

Opis:

It is assumed that elements of Exhaust Gases Cleaning Systems creates additional resistance along fumes duct and can affect energetic process of combustion. In the paper are presented results of researches aimed on detection and recognition of dumping effect in the exhaust pipeline using devices dedicated for engine’s torque and angular speed measurement. The experiment was carried out in test stand of Gdynia Maritime University; equipped with one-cylinder, low speed engine working in two-stroke mode. Effect of increasing of gas flow resistance was achieved by installation of shutters in cross-section of exhaust pipe. The shutters diminished active flow „window“ for 50% of normal crossection area of the exhaust pipe The plan of measurements encompasses registration of Instantaneous Angular Speed of the engine’s shaft and parallel registration of Instantaneous Value of Shaft Torsion, what reflect fluctuation of torque. Value of angular speed and toque enables exact calculation of power produced by the engine. Experiment included measurements at different levels of engine’s load and with changes of mean rotational speed. Angular speed and shaft’s torsion were measured and recorded using system ETNP-10 which is based on optical sensor and set of toothed discs. That method gives high accuracy of angular speed and torsion measurement. Results of experiment are presented as difference of related curves of values’ variations of angular speed and torsion occurring at the propulsion shaft connecting the engine and the water brake.

Źródło:

Journal of KONES; 2015, 22, 4; 87-93
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 70.

Tytuł:

The influence of camelina oil ester additive to diesel fuel on self - ignition angle in agricultural engine

Autorzy:

Orliński, P.

Powiązania:

https://bibliotekanauki.pl/articles/241585.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

camelina oil ester
self-ignition delay angle
diesel engine

Opis:

The article presents the results of investigations referring to self-ignition delay angle determined experimentally and through simulations. It was done using charged agricultural Perkins 1104C-E44T engine powered by pure diesel fuel (ON) and fuel mixtures, such as: diesel fuel with 10% camelina oil ester additive (L10) and diesel fuel with 15% camelina oil ester additive (L15). Camelina oil ester was used to show that it can also be used as an additive plant to diesel fuel (according to the plans of the European Union). Similarly to on a large scale used ester of rapeseed oil. The main aim of the above mentioned research was to show the influence of the fuels on the change of self-ignition delay angle for different rotational velocity conditions of the engine and for maximum volumetric dose of ignited fuel. The research was performed using a dynamometer test stand equipped with measurement system of fast-changeable needle lift of injector and the pressures of working substance. Before starting the investigations, selected physicochemical properties of researched fuels were determined that significantly influence that parameter of the combustion process. At the end of the article the conclusion of experiments and simulations results referring to selfignition delay angle are analysed.

Źródło:

Journal of KONES; 2013, 20, 2; 323-328
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 71.

Tytuł:

Wpływ systemu DOCNO2-CSF-LNT na emisję substancji toksycznych z silnika o ZS
The effect of the DOCNO2-CSF-LNT system on the toxic substance emissions from diesel engine

Autorzy:

Swat, M.

Powiązania:

https://bibliotekanauki.pl/articles/258061.pdf

Data publikacji:

2010

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy

Tematy:

silnik o ZS
ochrona środowiska
diesel engine
environmental protection

Opis:

Przedstawiono wyniki własnych badań systemu jednoczesnej redukcji tlen-ków azotu i utleniania cząstek stałych PM w układzie wylotowym silnika o zapłonie samoczynnym. Stwierdzono, że eliminacja "syndromu PM - NOx" w silniku o zapłonie samoczynnym, przez zastosowanie "reaktora konwersyjnego" w połączeniu z filtrem spalin i ewentualnie z reaktorem magazynującym NOx, jest możliwa i skuteczna.
Engine research results on the simultaneously reduction of nitrogen oxides and particulate matter PM oxidation system in Diesel engine exhaust system were presented. It was found that the elimination of the "PM - NOx syndrome" in Diesel engines by applying the conversion reactor in combination with the particulate matter filter and possibly with the NOx storage reactor is possible and effective.

Źródło:

Problemy Eksploatacji; 2010, 1; 129-143
1232-9312

Pojawia się w:

Problemy Eksploatacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 72.

Tytuł:

Raspredelenie kapel v processe raspylivaniâ dizelnogo topliva i ego smesi s biokomponentami

Autorzy:

Klyus, O.
Labeckas, G.
Slavinskas, S.
Mažeika, M.

Powiązania:

https://bibliotekanauki.pl/articles/906621.pdf

Data publikacji:

2013

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

diesel engine
fuel injector
atomized jet
droplet distribution
biofuel

Opis:

Droplet distribution in an atomized jet of Diesel fuel and biofuel mixture

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 93-97
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 73.

Tytuł:

Reliability and types of diagnosis in the process of diesel engine operation

Autorzy:

Girtler, J.

Powiązania:

https://bibliotekanauki.pl/articles/2073667.pdf

Data publikacji:

2018

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

diagnosis
marine engine
diesel engine
diagnosing system
diagnosed system
diagnosis reliability

Opis:

The article presents complexity of the problem concerning development of diagnosis with defined reliability by a diagnosing system (SDG) on technical condition of marine combustion engines, especially main engines. It was shown that development of the final diagnosis, the so-called initial operation diagnosis, on the operational usability (fDG on PEx) of a main engine in particular, is not possible without prior development of reliable diagnoses such as: diagnosis on correctness of diagnostic signals, diagnosis on correctness of values of the measured diagnostic parameters of an engine (DG on pWM), diagnosis on technical condition of an engine (DG on ST) and initial diagnosis on operational usability of an engine (wDG on PEx), the so-called initial operation diagnosis. Difficulties in development of the diagnoses were emphasized herein due to the fact that the process of acquisition of information needed to develop diagnoses with certain reliability or accuracy is a two-dimensional stochastic process with components: B(t) – being considered during operation (use) of SDG (at so-called long time - quasistatic) and C(ʋ) – being considered while measuring diagnostic parameters and diagnostic inference (at so-called short time - dynamic). The need to determine reliability or accuracy rate of each diagnosis in the form of conditional probability P(S/K) was also indicated, where S – technical state of the engine and K – vector of values of diagnostic parameters reflecting state S. Diagnostic status of marine engine as a diagnosed system (SDN) was characterized in general, on the example of an engine operation process with regards to input (X), output (Y), constant (C) and interference (Z) values. Also there was explained how to understand the terms: diagnostic test, signal inference, measurement inference, structure inference and operation inference, and how inductive inference can be used to verify, for example, the hypothesis H on engine state S when vector K of values of engine diagnostic parameters is observed.

Źródło:

Journal of Polish CIMEEAC; 2018, 13, 1; 20--29
1231-3998

Pojawia się w:

Journal of Polish CIMEEAC

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 74.

Tytuł:

The investigations of the influence of fuel consumption on the changes of selected parameters of the lubricant in diesel engines
Badania wplywu zuzycia paliwa na zmiany wybranych parametrow oleju smarnego w silnikach z zaplonem samoczynnym

Autorzy:

Wanke, P.

Powiązania:

https://bibliotekanauki.pl/articles/792914.pdf

Data publikacji:

2011

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

diesel fuel
fuel consumption
diesel engine
engine lubricant
dynamic viscosity
dielectrical constant
comparative test

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

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Skocz do pozycji: 75.

Tytuł:

Assesment of operation of ship main diesel engine using the theory of semi-Markovian and Markov processes

Autorzy:

Rudnicki, J.

Powiązania:

https://bibliotekanauki.pl/articles/245616.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

operations
ship power plant
diesel engine
semi-Markov processes

Opis:

Operation of ship propulsion system is associated with realization of definite operational goals. If to elements of the system the operational reliability strategy could be applied, the situation would be very simple as existing conditions would unambiguously determine application of means being on hand. However decision to reject application of the strategy (even if hypothetical) becomes obvious with a view of necessity of ensuring an acceptable level of safety to ship and environment as well as presence of associated formal and legal limitations. Therefore complexity of operational reality makes that means intended for operation may be used in various ways. Objectivity and rationality in making decision, assumed optimal in given conditions, forces to apply an evaluating (quantitative) approach to the problem, hence to search for such their parameters (indices) which, in a given decision situation, can be deemed most adequate. To precisely determine the task it is necessary to specify also its duration time, apart from conditions in which it will be realized. When considering propulsion engine, i.e. the main element of ship propulsion system, especially important becomes not only the problem which amount of energy could be at one's disposal but also within which time interval it could be delivered. Therefore apart from applying the commonly used reliability indices, it seems sensible to consider the operation in such evaluating approach as it could be determined by energy and time simultaneously.

Źródło:

Journal of KONES; 2009, 16, 3; 325-333
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Combustion, performance and exhaust emissions of the diesel engine operating on jet fuel

Autorzy:

Labeckas, G.
Slavinskas, S.
Vilutiene, V.

Powiązania:

https://bibliotekanauki.pl/articles/248056.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
jet fuel
autoignition
combustion
performance
emissions
smoke

Opis:

The article focuses on bench testing results of a four-stroke, four-cylinder, direct-injection, naturally aspirated diesel engine operating on the normal 95vol% (class C) diesel fuel + 5vol% RME (DF), F-34 jet fuel (JF) and jet fuel F-34 treated with the cetane improver (JF+0.12vol%). The purpose of the research is to investigate the availability to use of military F-34 jet fuel for land-based direct injection diesel engine powering and examine the effect of F-34 fuel and F-34 fuel treated with 0.12vol% 2-ethylhexyl nitrate on the autoignition delay, combustion, engine performance, emissions and smoke opacity of the exhausts. The peak in-cylinder gas pressure generated from JF and JF+0.12vol% is lower by 4.3% and 2.8% at 1400 min–1 speed, and 2.5% and 5.7% at 2200 min–1 speed compared to that 86.6 MPa and 82.5 MPa of the normal diesel. At rated 2200 min–1 speed, the use of treated jet fuel leads to smoother engine performance under all loads and the maximum cylinder pressure gradient lowers by 9.4% as against that 15.9 bar/deg of base diesel. The minimum brake specific fuel consumption (bsfc) for F-34 and treated F-34 fuels decreases by 4.8% and 3.5% at 1400 min–1 speed and increases by 2.7% and 3.7% at 2200 min–1 speed compared to 249.5 g/kWh and 251.8 g/kWh values of base diesel. Maximum NO emissions produced from fuels JF and JF+0.12vol% decrease by 11.5% and 7.0% at 1400 min–1, and 17.1% and 17.3% at 2200 min–1 speed compared to 1705 ppm and 1389 ppm emanating from the normal diesel. Maximum CO emissions produced from jet fuel JF and JF+0.12vol% decrease by 39.3% and 16.8% compared to that 4988 ppm produced from base diesel running at 1400 min–1 speed. At 2200 min-1 speed, the ecological effect of using fuel F-34 fuel decreases and the CO sustains over the whole load range at the same level and increases by 2.5% and 3.0% with regard to the normal diesel operating under high load. The HC emission also is lower by 78.3% and 58.8% for low and high loads compared to 230 ppm and 1820 ppm of the normal diesel running at 1400 min–1 speed. The smoke opacity ,generated from fuels JF and JF+0.12vol% sustains at lower levels over the all load range with the maximum values decreased by 14.6% and 8.1% with regard to 94.9% of the normal diesel operating at 1400 min–1 speed. The test results show that military F-34 fuel is a cleaner-burning replacement of diesel fuel and suggests fuel economy with reduced all harmful species, including NO, NO2, NOx, CO, HC, and smoke opacity of the exhausts.

Źródło:

Journal of KONES; 2012, 19, 1; 227-236
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

An algorithm for diagnosing injection systems of marine engines

Autorzy:

Bejger, Artur
Drzewieniecki, Jan

Powiązania:

https://bibliotekanauki.pl/articles/27315912.pdf

Data publikacji:

2018

Wydawca:

STE GROUP

Tematy:

diesel engine
injection system
diagnosis
acoustic emission
elastic waves

Opis:

The article presents the developed methods for diagnosing and analysing signals from injection systems of marine engines. As a source signal, the authors use elastic waves of acoustic emission. The essential fact in the case here considered is that the high frequency of signal from working elements of the injection system comes from a close source directly related to the change of the working parameters of the element (system). Characteristically for elastic waves of acoustic emission, low frequencies (e.g. those from other sources, such as machines in the engine room) are in this case attenuated. Therefore, the proper selection of the method for the analysis allows us accurately diagnose the injection system of a working engine.

Źródło:

New Trends in Production Engineering; 2018, 1, 1; 227--233
2545-2843

Pojawia się w:

New Trends in Production Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

The concept of an integrated laboratory control system for a dual - fuel diesel engine

Autorzy:

Śmieja, M.
Wierzbicki, S.

Powiązania:

https://bibliotekanauki.pl/articles/246809.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

biogas
diesel engine
dual-fuel feed system
microprocessor engine control system

Opis:

The need to limit greenhouse gases emissions and to increase the share of renewable fuels in the general energy balance forces people to look for new alternative energy sources. Methane or biogas, in which methane is the main combustible component, is one of such fuels, which is believed to be a promising diesel engine fuel. It is worth emphasizing that biogas might be believed to be one of the cleanest fuels due to the fact that it can be produced from waste, which in normal conditions decomposes releasing methane into the atmosphere. Methane (biogas) combustion in diesel engines requires a dual-fuel feed system, in which the liquid fuel initiating auto-ignition will be injected into the combustion chamber. It comes as a consequence of a relatively high spontaneous combustion temperature of methane, which is not able to self-ignite in the chamber without an external source of ignition. This article presents a concept of constructing an integrated laboratory control system, which will provide optimal feed control of complex composition gaseous fuel and of the injection of an appropriate pilot dose of a liquid fuel into the combustion chamber. The solution proposed to control a dual-fuel diesel engine, which was mounted on the test bed, enables performing comprehensive diesel engine research, ensuring not only stable working conditions for the engine, but also granting an opportunity to smoothly regulate the composition of the artificial biogas which feeds the engine and to control basic parameters of the liquid fuel pilot dose.

Źródło:

Journal of KONES; 2012, 19, 3; 451-458
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

Comparative researches of lube oil consumptions engine WOLA S12-U with composite pistons

Autorzy:

Kołomecki, J.

Powiązania:

https://bibliotekanauki.pl/articles/241861.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

combustion engines
diesel engine
composite pistons
lube oil consumption
engine tests

Opis:

An object of the paper are test results of the lube oil consumption in reference to two versions of standard and novel pistons worked out within the framework of the project of developmental No. O R00 0052 05 under the title "The elaboration of the modern technology of composite materials of the novel generation to uses on the pistons of combustion engines to military uses". The project was coordinated by Institute of Aviation; a project manager was Antoni Jankowski. Unique properties, which are characterized by worked out novel material, mainly high hardness and strength, the low hysteresis and coefficient of thermal expansion ....create many novel opportunities. As one of essential evaluation criteria of the novel piston, is lube oil consumption what is the object of the paper. The researches of the pistons were performed in WOLA S12-U engine. Novel solution of the pistons lets on the optimization of the shape of the piston and decreasing of the clearances between piston and cylinder. This causes decreasing of the lube oil consumption, decreasing of blowthroughs to the crank case, decreasing of the noise level and the vibration and the emission level of harmful components of exhaust gases; the improvement of the durability and dependability of the work of the engine and the pistons; increasing of mechanical loads , the pressure increasing combustion , and to the same opportunities increasing of the engine power and the BSFC decreasing.

Źródło:

Journal of KONES; 2012, 19, 4; 315-320
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 80.

Tytuł:

In-use investigations of the changes of lubricant properties in diesel engines
Badania eksploatacyjne zmian wlasciwosci olejow smarnych w silnikach z zaplonem samoczynnym

Autorzy:

Wanke, P.

Powiązania:

https://bibliotekanauki.pl/articles/792434.pdf

Data publikacji:

2012

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

diesel fuel
diesel engine
engine oil
dynamic viscosity
lubricant property
dielectrical constant
fuel consumption
ignition engine

Źródło:

Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 2
1641-7739

Pojawia się w:

Teka Komisji Motoryzacji i Energetyki Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 81.

Tytuł:

Stanowisko do badań diagnostycznych układu łożyskowania tłokowego silnika spalinowego
A Test Stand for Diagnostic Examination of a Diesel Engine Bearing System

Autorzy:

Korczewski, Z.
Wontka, L.

Powiązania:

https://bibliotekanauki.pl/articles/359749.pdf

Data publikacji:

2004

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

tłokowy silnik spalinowy
łożyskowanie silnika
diagnostyka
moc strat mechanicznych
EXPLO-SHIP 2004
diesel engine
bearing system
diesel engine diagnosis
power of mechanical losses

Opis:

Przedstawiono możliwości wykorzystania stanowiska laboratoryjnego silnika S312C do badań diagnostycznych układu łożyskowania. Wnioskowanie o stanie technicznym jest oparte na pomiarach ciśnień wewnątrzcylindrowych w zakresie biegu jałowego silnika. Daje to w rezultacie możliwość wyznaczenia mocy strat mechanicznych jako parametru charakteryzującego dysypację energii wnoszonej z powietrza i paliwa zasilającego.
A laboratory test stand of S312C diesel engine can be used for diagnosing the engine bearing system. Conclusions on the technical state are drawn from indicated pressure measurements at the engine running idle. They are subsequently converted into the power of mechanical losses as a parameter characterising dissipation of energy carried into the engine from feeding air and fuel.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 1 (73); 369-380
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: 82.

Tytuł:

Bioetanol jako komponent biopaliw do zasilania silników Diesla
Bioethanol as a component of biofuels for use in diesel engines

Autorzy:

Odziemkowska, M.

Powiązania:

https://bibliotekanauki.pl/articles/143092.pdf

Data publikacji:

2010

Wydawca:

Stowarzyszenie Inżynierów i Techników Przemysłu Chemicznego. Zakład Wydawniczy CHEMPRESS-SITPChem

Tematy:

bioetanol
olej napędowy
biopaliwo
silnik Diesla
bioethanol
diesel oil
biofuels
diesel engine

Opis:

Przedstawiono możliwość zastosowania bioetanolu jako komponentu biopaliw do zasilania silników z zapłonem samoczynnym. Określono właściwości fizykochemiczne mieszanek bioetanolu i oleju napędowego, a także ich oddziaływanie na materiały konstrukcyjne układu zasilania. Zwrócono uwagę na warunki przechowywania, transportu i dystrybucji takiego biopaliwa. Opisano wpływ mieszanek na charakterystykę pracy silnika oraz emisję spalin.
The possibility of application of the blends of bioethanol with diesel fuel to diesel engines was described. Properties directly related to engine parameters and those characterizing fuel quality were evaluated. The storage, transport and distribution problems of such biofuels were considered. The effects blended fuels on the performance and emissions of diesel engines was presented.

Źródło:

Chemik; 2010, 64, 5; 350-355
0009-2886

Pojawia się w:

Chemik

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Investigations into the degradation mechanism of thermal barrier applied in IC engine

Autorzy:

Hejwowski, T.

Powiązania:

https://bibliotekanauki.pl/articles/242073.pdf

Data publikacji:

2009

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

thermal barrier coating
spark ignited engine
diesel engine
phase stability
degradation mechanism

Opis:

In the present paper the results of investigations into the degradation mechanizm of thermal barrier coating (TBC) applied in spark ignited and naturally aspirated diesel engines are presented. The TBC comprised 0.09 mm thick NiCrAlY bond coat and 0.36 mm thick Al2O3-40%TiO2 top coat. The coating was atmospheric plasma sprayed on piston heads, inlet and outlet valves and engine head. Top coating was heavily damaged in thermal fatigue tests and in exploitation test on spark ignited engine. The mechanism of damage was spalling of the outermost layer of ceramics. Porosity of the ceramic coating increased significantly which made the coating permeable to the products of combustion and thus facilitated corrosion attack on bond layer. Spalling of coating did not increase wear of piston rings and sleeves. X-ray diffraction studies proved high phase stability ofAl2O3-40%TiO2 top coat. Al2Or40%TiO2 APS sprayed coating cannot be considered the alternative top coat to currently used ZrO2-8%Y2O3in engine applications. Thermal barrier coating based on Al2O3-40%TiO2 can not be used for adiabatization of diesel or spark ignited engines. Al2O3-40%TiO2 based TBC can be used in less demanding applications.

Źródło:

Journal of KONES; 2009, 16, 3; 129-134
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 84.

Tytuł:

High quality multi-zone and 3d CFD model of combustion in marine diesel engine cylinder

Autorzy:

Cuper-Przybylska, Dominika
Nguyen, Van Nhanh
Cao, Dao Nam
Kowalski, Jerzy

Powiązania:

https://bibliotekanauki.pl/articles/32921247.pdf

Data publikacji:

2023

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

CFD combustion model
large 4-stroke engine
diesel engine
emission
NOx concentration

Opis:

The paper presents a 3D model of the processes taking place in the cylinder of a large 4-stroke marine engine. The model is based on CFD calculations performed on the moving mesh. The modelling range includes the full duty cycle (720° crankshaft position) and the complete geometry of the cylinder with inlet and exhaust ducts. The input data, boundary conditions and validation data were obtained by direct measurements on the real object. Fuel injection characteristics were obtained by Mie scattering measurements in a fixed-volume chamber. The modelling results have been validated in terms of the pressure characteristics of the engine’s cylinder within the entire range of its loads. The mean error did not exceed 1.42% for the maximum combustion pressure and 1.13% for the MIP (Mean Indicated Pressure). The model was also positively validated in terms of the O₂ and NO_x content of the exhaust gas. The mean error in this case was 1.2% for NOx fractions in the exhaust gas and 0.4% for O2 fractions. The complete model data has been made available in the research data repository on an open access basis.

Źródło:

Polish Maritime Research; 2023, 2; 61-67
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

New methods of marine power plant diagnostics

Autorzy:

Charchalis, A.
Szyfelbain, M.

Powiązania:

https://bibliotekanauki.pl/articles/245418.pdf

Data publikacji:

2018

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

diesel engine
diagnostics
roughness
surface
silnik wysokoprężny
diagnostyka
chropowatość
powierzchnia

Opis:

Up-to-date, of high-tech design techniques of machine operation require constant monitoring on some levels. Generally, the monitoring today is limited to failure detection and machinery components check. The Marine Engineering Faculty of Gdynia Maritime University designed the System for Marine Engine Operation Assistance on the basis of Sulzer Diesel AL 25/30 testing station. The engine modernization and wider research and survey capabilities resulted in engine operation quality improvement, marine power plant research enhancement. The project broadens the research range and engine failure expertise as well as takes into consideration innovative marine fuel emissions. The goal has been achieved in the way of the test equipment modernization including: effective pressure sensors, high pressure fuel sensors, monitoring and visualization of the engine systems’ parameters, electronic indictors adopted to continuous operation at all cylinders in the same time, and high class decision aid computer equipment. Engine modernization and data base extension allow for carrying out a wide scope of research. Additionally, the article presents innovative diagnostic solutions together with their applications.

Źródło:

Journal of KONES; 2018, 25, 1; 33-40
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

The effect of Pt internal catalyst on relative carcinogenic coefficient (RCC) of polycyclic aromatic hydrocarbons (PAHs) emitted from diesel engine

Autorzy:

Janicka, A.
Walkowiak, W.
Szczepaniak, W.

Powiązania:

https://bibliotekanauki.pl/articles/247594.pdf

Data publikacji:

2008

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

internal catalyst
polycyclic aromatic hydrocarbons
relative carcinogenic coefficient
diesel engine

Opis:

One of the main anthropogenic sources of PAHs emission is motorization, especially compression ignition engines. The researches of International Agency for Research on Cancer (IARC) proved that some compounds from polycyclic aromatic hydrocarbons group are toxic for live organisms and cause damages of adrenal glands, lymphatic, circulation and respiratory systems. Because of carcinogenic properties and common occurrence in human environment benzo(a)pirene has been accepted as polycyclic aromatic hydrocarbons indicator. In relation to benzo(a)pirene, Nisbet and LaGoy determined relative carcinogenic coefficients (RCC) for individual polycyclic aromatic hydrocarbons. The paper presents results of analysis of PAHs RCC emitted from SB3.1 self-ignition engine with Pt active coating application inside. The catalyst was applied on engine valves surface. Zirconium ceramic was chosen as a coating for catalyst application (also because of its thermo-isolating properties). Because of unstable parameters of self-ignition engine work (pressure and temperature jumps), PAHs were extracted from two phases: gas phase and solid phase (particle matter - PM). A chromatographic method of polycyclic aromatic hydrocarbons identification and analysis, because of their low level of concentration in exhaust gases, needed to be supported by sample purification and enrichment stages. It has been found that implementation of catalytic coating on valves of the engine causes decrease of polycyclic aromatic hydrocarbons concentration in exhaust gases, what results in decrease (in most cases) of the sum of relative carcinogenic coefficient of polycyclic aromatic hydrocarbons.

Źródło:

Journal of KONES; 2008, 15, 3; 209-213
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

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

Artykuł

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Skocz do pozycji: 88.

Tytuł:

Odtwarzanie pasowań początkowych łożyskowań ślizgowych wałów korbowych silników wysokoprężnych wykorzystywanych w rolnictwie
Reconstruction of the initial fits of crankshaft slide bearings of diesel engines used in agriculture

Autorzy:

Sędłak, P.
Stawicki, T.
Grieger, A.

Powiązania:

https://bibliotekanauki.pl/articles/314013.pdf

Data publikacji:

2016

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

wał korbowy
silnik wysokoprężny
ciągniki rolnicze
crankshaft
diesel engine
tractors

Opis:

W artykule przedstawiono wyniki badań dotyczących odtwarzania pasowań początkowych czopów wałów korbowych silników wysokoprężnych stosowanych w ciągnikach rolniczych. Analizowano wymiary rzeczywiste czopów po obróbce szlifowaniem, a także grubości panewek wykorzystanych w trakcie naprawy. Na podstawie ustalonych wymiarów rzeczywistych średnic czopów i grubości panewek oszacowano luzy montażowy.
In the article findings concerning reconstruction of the initial fits of crankpins of diesel engines applied in farm tractors were presented. Real dimensions of crankpins after processing with grinding were analyzed, as well as thickness of bearing shells used during repair. On the basis of established real dimensions of diameters of crankpins and the thickness of shells the assembly clearance was estimated.

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 1111-1115
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:

Możliwość zastosowania silnika Diesla w lekkim śmigłowcu
Diesel engine applicability in a light helicopter

Autorzy:

Magryta, P.
Majczak, A.

Powiązania:

https://bibliotekanauki.pl/articles/310885.pdf

Data publikacji:

2012

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

silnik Diesla
silniki turbinowe
śmigłowce
diesel engine
helicopters
turbine engines

Opis:

W artykule zaprezentowano koncepcję zastosowania silnika Diesla jako jednostki napędowej lekkiego śmigłowca. Przedstawiono zalety i wady takiego rozwiązania w porównaniu z obecnie stosowanymi silnikami turbowałowymi. Proponowany silnik jest proekologiczną jednostką napędową ze względu na znacznie mniejszą emisję toksycznych składników spalin w porównaniu do silników turbowałowych. Jednocześnie poruszono problemy, które muszą być uwzględnione w aspekcie zamontowania silnika Diesla w śmigłowcu. Przedstawiono również główne parametry silnika, którymi powinien się on charakteryzować, aby zapewnić wymaganą moc i osiągi niezbędne do napędu lekkiego śmigłowca.
The paper presents the concept of a diesel engine application as a power unit in a lightweight helicopter. The authors present the advantages and disadvantages of this design compared to existing turbine engines. The proposed engine is eco-friendly power unit due to the much less toxic exhaust emissions compared to turbo shaft engines. The paper also presents the problems that must be considered in the context of a diesel engine mounted in the helicopter. In the end the paper the main engine parameters, which should be characterized to ensure the required power and performance necessary to drive a light helicopter are presented.

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2012, 13, 4; 98-103
1509-5878
2450-7725

Pojawia się w:

Autobusy : technika, eksploatacja, systemy transportowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Ispolzovanie parametra poverhnostnogo natâženiâ dlâ ocenki processa raspylivaniâ topliva v dizelâh
Application of surface tension parameter for estimation of fuel atomization process in Diesel engines

Autorzy:

Krause, P.
Klyus, O.

Powiązania:

https://bibliotekanauki.pl/articles/360763.pdf

Data publikacji:

2013

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

diesel engine
fuel spray
surface tension
droplets distributiion
bio-components

Opis:

At Maritime University of Szczecin there are carried out research works concerning utilization of biofuels on fishing vessels. There are a lot of information about relations between atomization and fuel combustion. Initial works also indicates correlation of surface tension with atomization. This article presents results of experimental investigation of droplets distribution after determination of fuel oil surface tension. Relation between atomization quality and surface tension are analyzed. Distillate fuel oil, rapeseed oil and 10% rapeseed mixture with distillate fuel oil were used as a fuel.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 98-101
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 91.

Tytuł:

Właściwości fizykalne i tribologiczne paliwa do silników ZS uzyskanego drogą recyklingu tworzyw sztucznych
Physical and tribological characteristics of Diesel engine fuel ob-tained by recycling of plastics

Autorzy:

Cisek, J.
Mruk, A.
Szczypiński-Sala, W.

Powiązania:

https://bibliotekanauki.pl/articles/132958.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

silniki wysokoprężne
paliwa alternatywne
recykling
diesel engine
alternative fuel
recycling

Opis:

W artykule opisano wyniki przeprowadzonych analiz podstawowych własności fizycznych paliwa do zasilania silników o zapłonie samoczynnym uzyskiwanego z przetworzenia odpadów tworzyw sztucznych. Podstawowym czynnikiem decydującym o zastosowaniu nowej generacji paliw do zasilania silników wysokoprężnych jest spełnienie przez nie wymagań stawianych przez normy, a dotyczących parametrów fizykochemicznych. Uzyskane wyniki badań omówiono w odniesieniu do wymagań zawartych w normach obowiązujących w krajach Unii Europejskiej i porównano z własnościami paliw dostępnych obecnie na rynku– mineralnego oleju napędowego i estrów metylowych oleju rzepakowego. Wykonano również oceny własności smarnych tych paliw, mających wpływ na trwałość elementów aparatury paliwowej silnika. Badania własności smarnych przeprowadzono na stanowisku czterokulowym, oceniając dla poszczególnych paliw intensywność zużycia elementów testowych w odniesieniu do nacisku właściwego oraz obciążenia zacierającego.
The paper presents the results of analysing principal physical characteristics of the fuel supplying the self-ignition engines, derived from the processing of plastic waste. The essential factor decisive in applying a new generation of fuels for diesel engines is the compliance with the standards requirements concerning physical and chemical parameters. The research results were discussed in relation to the requirements of the standards in force in the countries of the European Union and compared with the characteristics of the fuels commercially available at present – mineral diesel fuel and rape oil methyl esters. These fuels lubricity characteristics influencing the life of the engine fuel system elements were examined as well. The lubricity characteristics were examined on a four-ball stand, assessing, for particular fuels, the test elements wear intensity in relation to the specific pressure and to the seizing load.

Źródło:

Combustion Engines; 2013, 52, 3; 530-535
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

Diesel combustion in high load situations: a visual analysis of mixture formation and air utilization

Autorzy:

Grüneberger, P.
Jocham, B.
Winklhofer, E.

Powiązania:

https://bibliotekanauki.pl/articles/133395.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

diesel engine
combustion
visual analysis
silnik spalinowy
spalanie
analiza wizualna

Opis:

As fuel injection pressures keep rising, questions focus on additional benefits to be gained from the considerable efforts to achieve and handle the fuel pressure increments. The aim of fuel injection processes is to support the mixing of fuel molecules with oxygen. The steps towards this goal include fuel atomization, evaporation, heat transfer from air into the liquid or vaporized fuel together with transport of fuel for best air utilization. Engineering degrees of freedom include the parameters of the fuel injection system and handling of in-cylinder gas conditions. The paper describes basic high pressure flow processes, spray propagation, evaporation and combustion and the mixing of flame clouds with in-cylinder air for oxidation of high temperature soot particles. Experimental evidence of such processes is derived from laboratory flow tests as well as from optically accessed engines operated under conditions relevant for todays passenger car and heavy duty engines.

Źródło:

Combustion Engines; 2017, 56, 2; 3-6
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Determination of the rheological properties of biofuels containing SBME biocomponent
Określenie własności reologicznych biopaliw zawierających biokomponent SBME

Autorzy:

Wcislo, G.

Powiązania:

https://bibliotekanauki.pl/articles/793262.pdf

Data publikacji:

2014

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

diesel engine
biodiesel fuel
biofuel
biocomponent
dynamic viscosity
rheological property

Źródło:

Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 4
1641-7739

Pojawia się w:

Teka Komisji Motoryzacji i Energetyki Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 94.

Tytuł:

Wykorzystanie sieci neuronowej do diagnozowania wybranych niesprawności silnika okrętowego
The neural networks application in the marine diesel engine diagnostics

Autorzy:

Pawletko, R.

Powiązania:

https://bibliotekanauki.pl/articles/328231.pdf

Data publikacji:

2002

Wydawca:

Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN

Tematy:

diagnostyka
silnik spalinowy
sieć neuronowa
diagnostic
diesel engine
neural networks

Opis:

Tematem publikacji jest próba określenia przydatności sieci neuronowych do diagnozowania wybranych niesprawności silnika okrętowego. Weryfikację doświadczalną zaproponowanego algorytmu diagnostycznego przeprowadzono na symulatorze Turbo Diesel 2.0, zainstalowanym w Katedrze Siłowni Okrętowych Akademii Morskiej w Gdyni.
The paper presents the new possibilities offered by neural networks when applied to the diesel engine diagnostics. The experience data has been collected during the test at the Turbo Diesel 2.0 diagnostic simulator, which has been installed in the Gdynia Maritime Academy. The proposed of the neural networks practical implementation has been include.

Źródło:

Diagnostyka; 2002, 27; 43-47
1641-6414
2449-5220

Pojawia się w:

Diagnostyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 95.

Tytuł:

The influence of engine speed on the thermal stresses of the piston

Autorzy:

Gustof, P.
Hornik, A.
Czech, P.
Jędrusik, D.

Powiązania:

https://bibliotekanauki.pl/articles/196977.pdf

Data publikacji:

2016

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

diesel engine
thermal stresses
piston
silnik wysokoprężny
naprężenia termiczne
tłok

Opis:

In the paper, numeric calculations relating to the influence of engine speed on thermal stresses of the piston in a turbocharged diesel engine in the initial phase of its work were carried out. The calculations were based on experimental studies and the data resulting from them. They were made using a geometrical model of the piston in a turbocharged diesel engine with a capacity of 2,300 cm3 , with a direct fuel injection to the combustion chamber and a power rating of 85 kW. Modelling of the thermal stresses of the piston was carried out for the engine speed n=2,000 min-1 and n=4,250 min-1

Źródło:

Zeszyty Naukowe. Transport / Politechnika Śląska; 2016, 93; 23-29
0209-3324
2450-1549

Pojawia się w:

Zeszyty Naukowe. Transport / Politechnika Śląska

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 96.

Tytuł:

Effect of biodiesel blended fuel on the performance and emission characteristics of diesel engines – a review

Autorzy:

Zheng, Fangyuan
Cho, Haeng Muk
Xu, Changchun

Powiązania:

https://bibliotekanauki.pl/articles/2174181.pdf

Data publikacji:

2022

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Tematy:

biodiesel
paliwo
emisja spalin
diesel engine
fuel properties
engine performance
exhaust emission

Opis:

The internal combustion engine plays a vital role in transportation, industry, and shipping. However, diesel as one of the main fuels for internal combustion engines, caused many environmental and human health problems. In order to solve the problems, more researchers have been committed to the research of alternative fuels. Biodiesel is a renewable, sustainable alternative fuel, and its characteristics are similar to traditional diesel. It can be mixed with pure diesel. It has been found that a mix with pure diesel in a certain ratio can effectively reduce the negative effects caused by its characteristics, improve the combustion performance, and reduce the NOx and PM emissions. This article mainly reviews the effects of the mixture of biodiesel and diesel on engine combustion characteristics and exhaust emissions, including three parts: part (1) summarizes and analyzes the biodiesel’s production and characteristics, part (2) analyzes the engine’s performance under different working conditions, and part (3) studies and analyzes the exhaust emission under different working conditions.

Źródło:

International Journal of Applied Mechanics and Engineering; 2022, 27, 1; 215--231
1734-4492
2353-9003

Pojawia się w:

International Journal of Applied Mechanics and Engineering

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 97.

Tytuł:

Ehffectivnost tekhnicheskojj ehkspluatacii lesnykh MES
Effectiveness of technical manual forest MES

Autorzy:

Titova, L.
Rogovskijj, I.

Powiązania:

https://bibliotekanauki.pl/articles/76791.pdf

Data publikacji:

2014

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

efficiency
technical operation
durability
technical service
diesel engine
wood
forest

Źródło:

Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 3
1730-8658

Pojawia się w:

Motrol. Motoryzacja i Energetyka Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

Numerical analysis of volatile organic compounds concentration in A C segmnet vehicle interior – diesel engine exhoust pollution

Autorzy:

Dudycz, A.
Górniak, A.
Janicka, A.
Rodak, M.
Skrętowicz, M.
Trzmiel, K.
Włostowski, R.
Woźniak, J.
Zawiślak, M.

Powiązania:

https://bibliotekanauki.pl/articles/2073654.pdf

Data publikacji:

2015

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

computational fluid dynamics CFD
volatile organic compounds (VOCs)
diesel engine

Opis:

In large cities the number of inhabitants constantly increases. It is caused by economic issues. The evergrowing populations causes more intense traffic and in consequence increase of air pollutions. Topology and roads configuration is conducive to the accumulation of toxic substances. Harmful substances accumulates inside the vehicles interiors which significantly deteriorate microclimate within the cabin. The study aimed to determine the amount of harmful substances getting into the interior of vehicles and their distribution have been presented in this paper.

Źródło:

Journal of Polish CIMEEAC; 2015, 10, 1; 45--52
1231-3998

Pojawia się w:

Journal of Polish CIMEEAC

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 99.

Tytuł:

The effect of alternative fuels injection timing on toxic substances formation in CI engines

Autorzy:

Wojs, M. K.
Orliński, P.
Lasocki, J.

Powiązania:

https://bibliotekanauki.pl/articles/133347.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Naukowe Silników Spalinowych

Tematy:

biofuels
diesel engine
toxic substances
biopaliwa
silnik spalinowy
substancje toksyczne

Opis:

The present study describes selected issues associated with the emission level in toxic exhaust gases and fuel injection timing. The study was focused on the following types of fuels: Diesel oil (the base fuel) and the other fuels were the mixture of fatty acid methyl ester with Camelina (L10 – diesel fuel with 10% V/V FAME of Camelina and L20 – diesel fuel with 10% V/V FAME of Camelina) was used. Fuel injection advanced angle was set for three different values – the factory setting – 12° before TDC, later injection – 7° and earlier injection – 17°. The most important conclusion is that in most measurement points registered in the same engine operating conditions, the concentration of fuel NOx in L10 and L20 increased but PM emissions decreased which is caused by active oxygen located in the internal structure of the fuel. This fact contributes to the rise in temperature during the combustion process. At the same time factory settings of the angle makes NOx emissions lower and close to reference fuel.

Źródło:

Combustion Engines; 2017, 56, 1; 73-76
2300-9896
2658-1442

Pojawia się w:

Combustion Engines

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 100.

Tytuł:

Przykładowe relacje typu defekt-symptom silnika S-4003 pozyskane metodą diagnostyki według modelu
An example defect-symptom relations of the S-4003 engine obtained by the way of model based diagnostics

Autorzy:

Kiciński, J.
Banaszek, S.
Markiewicz, A.
Miąskowski, W.

Powiązania:

https://bibliotekanauki.pl/articles/328563.pdf

Data publikacji:

2004

Wydawca:

Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN

Tematy:

diagnostyka
łożyska ślizgowe
silniki spalinowe
diagnostics
slide bearings
diesel engine

Opis:

Praca przedstawia przykład generowania symulacyjnych relacji diagnostycznych obiektu - układu korbowego silnika spalinowego typu S-4003. Zastosowano oryginalną metodologię kojarzenia programów komputerowych do analizy liniowej konstrukcji (MES) z autorskimi programami do nieliniowej analizy łożysk ślizgowych. Wykorzystano przy tym linearyzację obciążeń w małych przedziałach czasowych. Przedstawiono silnik S-4003, jego układ korbowy, oraz obciążenia działające na niego w przypadku bazowym (odniesienia) i z defektem w postaci nieszczelności komory spalania. Pokazano pokrótce wyniki analizy modalnej. Zasadniczą częścią pracy jest prezentacja wyników obliczeń dynamiki układu korbowego skojarzonymi metodami liniowymi i nieliniowymi oraz wskazanie możliwości pozyskiwania tą drogą relacji diagnostycznych.
An article presents an example of generating a simulation diagnostic relations of the object - a crankshaft of the S-4003 Diesel engine. An original methodology was used to couple computer codes used to linear analysis of the construction (FEM) with originally invented programs to nonlinear analysis of the slide bearings. It was done by using load linearization in short time intervals. An S-4003 Diesel engine and its crankshaft are presented. There are also presented loads of the crankshaft in the base (reference) case and in the case of defect - combustion chamber leakage. The modal analysis of the crankshaft is briefly shown. The main part of the work is a presentation of the results of the calculations made using coupled linear and nonlinear methods and showing the possibilities to obtain diagnostic relations in that way.

Źródło:

Diagnostyka; 2004, 32; 7-14
1641-6414
2449-5220

Pojawia się w:

Diagnostyka

Dostawca treści:

Biblioteka Nauki

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