Temat: gas engines emissions - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: External speed–torque characteristics of Fiat 0.9 TwinAir petroland CNG-fuelled engine
Autorzy:: Ambrozik, A.
Kurczyński, D.
Łagowski, P.
Warianek, M.
Powiązania:: https://bibliotekanauki.pl/articles/133783.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: spark ignition engines
gas engines
gasoline engines
external characteristic
gas engines emissions
silnik z zapłonem iskrowym
silniki gazowe
silniki benzynowe
charakterystyka zewnętrzna
emisja silników gazowych
Opis:: The paper presents the results of the experimental study of the turbocharged spark ignition Fiat 0.9 TwinAir engine, with indirect, multipoint petrol injection system, powered by petrol and equipped with the injection system of the compressed natural gas (CNG) supplying gas into the intake manifold. The test results provide the comparison of the selected fuel-efficiency, energetic and ecologic indicators of engine work, obtained when it is powered by Pb95 petrol and the CNG gas. The paper compares the external torque-speed characteristics with factory-set engine controllers. Also presented are the concentration levels of harmful gases in the exhaust fumes: carbon monoxide (CO), nitric oxides (NO_x), hydrocarbons (HC) and carbon dioxide (CO₂). Results obtained on the engine powered by CNG are indicating lower power and torque, lower concentration of hazardous gases, in particular carbon monoxide and hydrocarbons as well as significantly lower consumption of the gas when compared to petrol.
Źródło:: Combustion Engines; 2017, 56, 4; 222-226
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Dedicated exhaust gas recirculation in spark ignition engines
Autorzy:: Rehan, S.
Powiązania:: https://bibliotekanauki.pl/articles/103305.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: exhaust gas recirculation
NOx emissions
spark ignition engines
Opis:: The impact of high levels of exhaust gas recirculation (EGR) has been well documented to decrease fuel consumption and reduce emissions of spark ignition engines. But there are also many limitations associated with this technology like EGR control and tolerance, which can reduce the potential efficiency improvements. A new concept called D-EGR has been presented in which the exhaust from a sub group of power cylinders is channeled back to the intake of all the cylinders. In this literature review both experimental and numerical analysis of this technology is shown. In the former case experiments were performed on 2.0 L PFI engine with gasoline as a fuel in part and high load conditions and the results show that at part loads the D-EGR engine can lead to lower Brake Specific Fuel Consumption, lower HC and CO emissions and higher brake thermal efficiency. At high load operations the results show improved combustion stability and superior knock tolerance. In the numerical studies it shows comparable thermal efficiency with conventional spark ignition (SI) engines and reduction in NOX emissions.
Źródło:: Advances in Science and Technology. Research Journal; 2017, 11, 2; 44-50
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Reduction emission level of harmful components exhaust gases by means of control of parameters influencing on spraying process of biofuel components for aircraft engines
Autorzy:: Jankowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/245547.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
aircraft engines
alternative fuels
fuel atomization
exhaust gas emissions
Opis:: The aim of the research is to test the fuel additives which decrease dimensions of atomised fuel drops, by applying changes to the specific parameters which impact the atomisation process. Those parameters include density, surface tension, viscosity and the viscosity index. Dimensions of drops of biofuels are much bigger compared to hydrocarbon fuels. By modifying the physical and chemical parameters of biofuels, dimensions of drops in an atomised fuel stream should become smaller. Those dimensions play a major role for the level of emissions of hydrocarbon and carbon monoxide, as well as mainly nitrogen oxides and particulates. The research on emissions of toxic components of fuel is relatively advanced today in the field of piston combustion engines, especially for use in car vehicles. However, the dynamic development of the air transport brings more pressure on the issue of toxic emissions in the case of aircraft engines. The level of toxic emissions from aircraft engines may be from ten up to even several thousand times greater than the level of emissions from piston engines. The issue of how biofuel additives can affect the process of fuel atomisation and thus enable the control over the atomisation to obtain the smallest possible drops leading to reduced nitrogen oxides emissions is a new and original issue. The reduced nitrogen oxides emissions in the case of biofuels is of utmost significance because, according to latest knowledge, those levels are increasing.
Źródło:: Journal of KONES; 2011, 18, 3; 129-134
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Reduction of carbon footprint from spark ignition power facilities by the dual approach
Autorzy:: Janusz-Szymańska, Katarzyna
Grzywnowicz, Krzysztof
Wiciak, Grzegorz
Remiorz, Leszek
Powiązania:: https://bibliotekanauki.pl/articles/1845486.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: spark ignition engines
digestion
gas
cofiring
CO2 emissions
membrane
separation
Opis:: Power generation units, suitable for individual users and small scale applications, are mainly based on spark ignition engines. In recently performed research, reductions of emissions coming from such units, especially considering carbon dioxide emissions, are deemed as the issue of particular importance. One of solutions, postponed to reduce impact of spark ignition engine-based units on the natural environment, is transition from fossil fuels into renewable gaseous fuels, as products of organic digestion. Nonetheless, development of new solutions is required to prevent further carbon dioxide emissions. The paper presents a novel dual approach developed to reduce carbon dioxide emissions from stationary power units, basing on spark ignition engine. The discussed approach includes both reduction in carbon content in the fuel, which is realized by its enrichment with hydrogen produced using the solar energy-supported electrolysis process, as well as application of post-combustion carbon dioxide separation. Results of the performed analysis suggest profitability of transition from fossil into the hydrogen-enriched fuel mixture, with significant rise in operational parameters of the system following increase in the hydrogen content. Nevertheless, utilization of the carbon dioxide separation leads to vital soar in internal energy demand, causing vital loss in operational and economical parameters of the analyzed system.
Źródło:: Archives of Thermodynamics; 2021, 42, 2; 171-192
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Plasma technology to remove NOx from off-gases
Autorzy:: Pawelec, Andrzej
Chmielewski, Andrzej G.
Sun, Yongxia
Bułka, Sylwester
Torims, Toms
Pikurs, Guntis
Mattausch, Gösta
Powiązania:: https://bibliotekanauki.pl/articles/2055686.pdf
Data publikacji:: 2021
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: electron beam
flue gas treatment
marine diesel engines
NOx
SOx
ship emissions
Opis:: Operation of marine diesel engines causes signifi cant emission of sulphur and nitrogen oxides. It was noticed worldwide and the regulations concerning harmful emissions were introduced. There were several solutions elaborated; however, emission control for both SOx and NOx requires two distinctive processes realized in separated devices, which is problematic due to limited space on ship board and high overall costs. Therefore, the electron beam flue gas treatment (EBFGT) process was adopted to ensure the abatement of the problem of marine diesel off-gases. This novel solution combines two main processes: fi rst the fl ue gas is irradiated with electron beam where NO and SO2 are oxidized; the second stage is wet scrubbing to remove both pollutants with high efficiency. Laboratory tests showed that this process could be effectively applied to remove SO2 and NOx from diesel engine off-gases. Different compositions of absorbing solution with three different oxidants (NaClO, NaClO2 and NaClO3) were tested. The highest NOx removal efficiency (>96%) was obtained when seawater-NaClO2-NaOH was used as scrubber solution at 10.9 kGy dose. The process was further tested in real maritime conditions at Riga shipyard, Latvia. More than 45% NOx was removed at a 5.5 kGy dose, corresponding to 4800 Nm3 /h off-gases arising from ship emission. The operation of the plant was the first case of examination of the hybrid electron beam technology in real conditions. Taking into account the experiment conditions, good agreement was obtained with laboratory tests. The results obtained in Riga shipyard provided valuable information for the application of this technology for control of large cargo ship emission.
Źródło:: Nukleonika; 2021, 66, 4; 227--231
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The potential of gaseous alternative fuels and legal conditions of their use in car engines and machines in the context of impacts on the environment
Autorzy:: Piasecki, D.
Powiązania:: https://bibliotekanauki.pl/articles/245811.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: CNG
LNG
methane
gaseous-fuelled engines
methane in the automotive industry
alternative fuels
exhaust gas emissions
Opis:: This publication presents the possibility of using gaseous alternative fuels, in particular based on methane, such as Compressed Natural Gas (CNG), Liquefied Natural Gas (LNG) or agricultural biogas and hydrogen, which gain in popularity as fuels for engines used in the automotive industry, in the segment of both passenger cars and trucks. Increasing efforts to reduce emissions of carbon dioxide (CO2), carbon monoxide (CO), oxides of nitrogen (NOx) and particulate matter into the atmosphere have been supported by legal environment shaped both at European Union level and in international regulations and translate into the growing importance of alternative gaseous fuels. This publication will present, among other things, the essential elements of "Clean energy for Transport", and "type approval of motor vehicles with respect to emissions” directives and of the Kyoto 1997 Climate Change Conference. It also demonstrates potential economic benefits of replacing traditional fuels with alternatives gas fuels. Cities of Tychy and Gdynia, which implement environmentally friendly solutions for public transport services, will serve as an example. The publication also recognizes direct environmental benefits arising from the replacement of currently used fuels – gasoline and diesel – with natural gas and fuels derived from renewable energy sources. In particular, the following publication deals with the use of gases, which are a by-product of human activity – gases from animal breeding and coal, mine methane drainage.
Źródło:: Journal of KONES; 2015, 22, 4; 227-234
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Reduction of CO₂ emissions from offshore combined cycle diesel engine-steam turbine power plant powered by alternative fuels
Autorzy:: Olszewski, Wojciech
Dzida, Marek
Nguyen, Van Giao
Cao, Dao Nam
Powiązania:: https://bibliotekanauki.pl/articles/34613948.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: ship power plants
alternative marine fuel
greenhouse gases
CO2 emissions
combined power system
diesel engines
steam turbine
gas turbine
Opis:: Diverse forms of environmental pollution arise with the introduction of materials or energy that exert adverse effects on human health, climate patterns, ecosystems, and beyond. Rigorous emission regulations for gases resulting from fuel combustion are being enforced by the European Union and the International Maritime Organization (IMO), directed at maritime sectors to mitigate emissions of SO_x, NO_x, and CO₂. The IMO envisions the realisation of its 2050 targets through a suite of strategies encompassing deliberate reductions in vessel speed, enhanced ship operations, improved propulsion systems, and a transition towards low and zero-emission fuels such as LNG, methanol, hydrogen, and ammonia. While the majority of vessels currently depend on heavy fuel or low-sulphur fuel oil, novel designs integrating alternative fuels are gaining prominence. Technologies like exhaust gas purification systems, LNG, and methanol are being embraced to achieve minimised emissions. This study introduces the concept of a high-power combined ship system, composed of a primary main engine, a diesel engine, and a steam turbine system, harnessing the energy contained within the flue gases of the main combustion engine. Assumptions, constraints for calculations, and a thermodynamic evaluation of the combined cycle are outlined. Additionally, the study scrutinises the utilisation of alternative fuels for ship propulsion and their potential to curtail exhaust emissions, with a specific focus on reducing CO₂ output.
Źródło:: Polish Maritime Research; 2023, 3; 71-80
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Research on air pollutant emissions from transport sources in Pila
Autorzy:: Gorzelańczyk, Piotr
Wojtasik, Maja
Powiązania:: https://bibliotekanauki.pl/articles/2134866.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: air pollution
transport
exhaust gas emissions
transport source
environmental protection
smog
internal combustion engines
zanieczyszczenie powietrza
emisja gazów spalinowych
źródło transportu
ochrona środowiska
silniki spalinowe
Opis:: This article aims to examine the emission of pollutants utilising transport in different points of the city in question at two different intervals, then show whether the means of transport negatively affects the city through pollution. The study of air pollutant emissions from transport sources is a key aspect towards solving problems related to environmental pollution. A study on the measurements of selected PM10 and PM2.5 pollutants to be able to determine the quality of air from transport sources in Pila at different times of the year and with appropriate assumptions regarding the appropriate distance by the road is included in this article. This study analysed data on air pollutants and compared it with the results of the Chief Inspectorate for Environmental Protection. This made it possible to propose solutions for the development of the air condition in Pila.
Źródło:: Zeszyty Naukowe. Transport / Politechnika Śląska; 2021, 111; 57--74
0209-3324
2450-1549
Pojawia się w:: Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Environmental emissions and efficiency of a direct injection diesel engine fueled with various fatty acid methyl esters
Autorzy:: Sairam, K.
Gopinath, A.
Velraj, R.
Powiązania:: https://bibliotekanauki.pl/articles/207516.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: direct injection
brakes
carbon monoxide
cottonseed oil
diesel engines
efficiency
engines
fatty acids
fuels
direct injection diesel engines
environmental emissions
exhaust gas temperature
fatty acid methyl ester
wtrysk bezpośredni
hamulce
tlenek węgla
olej z nasion bawełny
silniki wysokoprężne
wydajność
silniki
estryfikacja
estry
kwasy tłuszczowe
zużycie paliwa
paliwa
emisje gazów
silniki wysokoprężne z wtryskiem bezpośrednim
estry metylowe kwasów tłuszczowych
Opis:: Environmental emissions and efficiency of a direct injection diesel engine fueled with fatty acid methyl esters (FAMEs) have been experimentally investigated and compared with petro-diesel. Rubber seed oil methyl ester, cotton seed oil methyl ester, neem oil methyl ester, and mahua oil methyl ester were used as fuels. The brake specific fuel consumption, brake thermal efficiency, and exhaust gas temperature, nitrogen oxides, carbon monoxide, hydrocarbons, and smoke emissions were investigated. Mahua oil methyl ester exhibits higher brake thermal efficiency compared to other FAMEs. The NOx was found to be higher, while CO, HC, and smoke emissions of rubber seed oil methyl ester were lower than the other fuels at all loads.
Źródło:: Environment Protection Engineering; 2015, 41, 1; 125-135
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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