Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "spark-ignition engines" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 25
Tytuł:
Diagnosing faults in the timing system of a passenger car spark ignition engine using the bayes classifier and entropy of vibration signals
Autorzy:
Czech, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2203067.pdf
Data publikacji:
2022
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
internal combustion engines
diagnostics
Bayesian classifier
pattern recognition
spark-ignition internal combustion engine
exhaust valve of the internal combustion engine
silniki spalinowe
diagnostyka
klasyfikator bayesowski
rozpoznawanie wzorca
silnik spalinowy z zapłonem iskrowym
zawór wydechowy silnika spalinowego
Opis:
Today's systems for diagnosing the technical condition of machines, including vehicles, use very advanced methods of acquiring and processing input data. Presently, work is being conducted globally to solve related problems. At the moment, it is not yet possible to create a single procedure that would enable the construction of a properly functioning diagnostic system, regardless of the selected object to be diagnosed. Hence, there is a need to conduct further research into the possibility of using already developed methods, as well as their modification to other diagnostic cases. This article presents the results of research related to the use of the Bayes classifier for diagnosing the technical condition of passenger car engine components. Damage to the exhaust valve of a spark ignition engine was diagnosed. The source of information on the technical condition was vibration signals recorded at various measuring points and under different operating conditions of the car. To describe the nature of changes in the vibration signals, the entropy measures were determined for the decomposed signal using the discrete wavelet transform is proposed.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 116; 83--98
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
The environmental safety of the Fiat 0.9 TwinAir compressed natural gas engine
Autorzy:
Warianek, Michał G.
Lejda, Kazimierz
Powiązania:
https://bibliotekanauki.pl/articles/263728.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
spark ignition engines
gas engines
CNG engine
load characteristics
emission of gas engines
Opis:
The article presents the results of measurements of concentrations of selected exhaust components of the Fiat 0.9 TwinAir spark ignition engine operating according to load characteristics. The tested engine has an indirect, multi-point petrol supply system and has been retrofitted with an indirect CNG injection system. The results of the tests are a comparison of selected economic, ecological and energetic indicators of engine operation obtained when fuelled with CNG and 95 octane petrol. The operation of the engine fuelled with gaseous fuel was preceded by autocalibration of the controller of the fuelling system. The article presents the results of tests of concentrations of harmful components of exhaust gases: carbon dioxide CO2 , carbon monoxide CO, nitrogen oxides NOx and HC hydrocarbons. Moreover, the values of lambda λ air excess coefficient are presented and fuel consumption is compared. The obtained results of the tests of the engine fuelled with CNG gas show a significant decrease in the value of the obtained torque in comparison to the engine torque when fuelled with petrol. The engine fuelled with compressed natural gas contributed to the improvement of its ecological properties and a reduction of fuel consumption, which are important factors of ecological and energy safety. Exhaust gas analysis showed a reduction in the concentration of harmful components of exhaust gases, mainly hydrocarbons and nitrogen oxides. A positive effect of the operation of the engine powered by CNG was also a significant reduction of carbon dioxide in the exhaust gases compared to the engine powered with gasoline.
Źródło:
Archiwum Motoryzacji; 2020, 88, 2; 47-60
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of combustion products composition models on the exergetic analysis of spark-ignition engine fuelled with ethanol
Autorzy:
Rufino, Caio H.
de Lima, Alessandro J. T. B.
Mattos, Ana P.
Allah, Fazal U. M.
Ferreir, Janito V.
Gallo, Waldyr L. R.
Powiązania:
https://bibliotekanauki.pl/articles/240380.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
engine simulation
combustion products
spark-ignition engines
ethanol
irreversibility
produkt
spalanie
etanol
nieodwracalność
silnik
zapłon iskrowy
Opis:
The engine simulations have become an integral part of engine design and development. They are based on approximations and assumptions. The precision of the results depends on the accuracy of these hypotheses. The simplified models of frozen composition, chemical equilibrium and chemical kinetics provide the compositions of combustion products for engine cycle simulations. This paper evaluates the effects of different operating conditions and hypotheses on the exergetic analysis of a spark-ignition engine. The Brazilian automotive market has the highest number of flex-fuel vehicles. Therefore, a flex-fuel engine is considered for simulations in order to demonstrate the effects of these different hypotheses. The stroke length and bore diameter have the same value of 80 mm. The in-cylinder irreversibility is calculated for each case at the closed part of the engine cycle. A comparative analysis of these hypotheses provides a comprehensive evaluation of their effects on exergetic analysis. Higher values of accumulated irreversibility are observed for the oversimplified hypothesis.
Źródło:
Archives of Thermodynamics; 2019, 40, 3; 27-42
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of hydrogen addition for exhaust gas emission in SI gas engine
Wpływ dodatku wodoru na emisję toksycznych składników spalin w gazowym silniku spalinowym o zapłonie iskrowym
Autorzy:
Grab-Rogaliński, Karol
Powiązania:
https://bibliotekanauki.pl/articles/310406.pdf
Data publikacji:
2019
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
spark-ignition engine
SI engines
gas-fuelled combustion engine
hydrogen
methane
emission of toxic components of exhaust gases
silnik spalinowy o zapłonie iskrowym
silnik ZI
silnik spalinowy zasilany gazem
wodór
metan
emisja toksycznych składników spalin
Opis:
One of the major problems in internal combustion engines is emission of pollutants with exhaust gases. Those pollutants are not only harmful for environment but also for humans. To decrease emission of pollutants many mechanical and chemical methodes are used in internal combustion engines especially in exhaust system such as TWC, DPF, SCR. Alternative way for decrease in exhaust gas pollutants is use of alternative fuel as a primary energy carrier or as an additional fuel for base hydrocarbon one. In this studies the hydrogen was used as a additional fuel to methane. Both fuels were delivered to intake manifold. The share of the fuel was 100/0 methane/hydrogen and 70/30 methane/hydrogen. The addition of hydrogen to base fuel shown decrease of exhaust pollutants from engine and increase in engine operating parameters.
Jednym z głównych problemów silników spalinowych jest emisja toksycznych składników spalin. Zanieczyszczenia te są nie tylko szkodliwe dla środowiska ale również dla człowieka. Do obniżenia emisji toksycznych składników spalin wykorzystuje się w silnikach spalinowych wiele mechanicznych i chemicznych metod między innymi katalizatory trójdrożne, filtry cząstek stałych oraz katalizatory selekcyjne. Alternatywną metodą obniżenia emisji toksycznych składników spalin jest wykorzystanie paliwa alternatywnego jako nośnika energii lub jako dodatku do paliwa węglowodorowego. Prezentowany artykuł przedstawia wykorzystanie wodoru jako dodatku do paliwa podstawowego jakim był metan. Paliwa podawane były do kolektora dolotowego. Procentowy stosunek objętościowy dla badanych paliw był następujący 100/0 metan/wodór i 70/30 metan/wodór. Prowadzone pomiary wykazały, że dodatek wodoru do paliwa podstawowego wykazał spadek w emisji toksycznych składników spalin oraz wzrost parametrów użytkowych silnika.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2019, 20, 1-2; 241-245
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The evaluation of the Fiat 0.9 TwinAir engine powered by petrol and LPG gas work cycles uniqueness
Autorzy:
Lejda, K.
Kurczyński, D.
Łagowski, P.
Warianek, M.
Dąbrowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/245074.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
spark ignition engines
gas engines
gasoline engines
uniqueness of work cycle of internal combustion engine
indicator diagram
Opis:
The article describes the test results of the uniqueness of the work cycle of two-cylinder internal combustion piston FIAT 0.9 TwinAir engine, while being powered by 95 octane petrol fuel and LPG gas. The engine was working according to load characteristics. The engine mounted on the test bench was equipped with a sequential LPG gas fuel supply system. The gas fuels differ significantly from the petrol fuels in their physiochemical properties. In order to rationally utilize gas fuels to power internal combustion engines, the knowledge about basic fuel burning process of these fuels is required. The article shows the analysis of individual engine work cycles of the technologically advanced engine in order to evaluate the influence of powering by LPG gas fuel on the rate of uniqueness of its work cycles. The measure of uniqueness of the inter-cylinder processes are the work cycle uniqueness indicators, which are as follows: the maximum work cycle pressure uniqueness indicator, the average measured work cycle pressure uniqueness indicator, the measured pressure work cycle graph uniqueness indicator and the measured pressure work cycle partial graph uniqueness. The carried out research and its analysis has shown that powering the engine with LPG gas has an influence on the engine work cycles and its uniqueness. The burning process of the mixture consisting of air and LPG gas is quicker, which has an effect on the higher speed of pressure increase rate in comparison with the engine being powered by petrol fuel. Achieved maximum in-cylinder pressure values while the engine was powered by LPG gas were higher in comparison with it being fuelled with conventional fuel. This causes an increase of the gas lads on crank-piston system, which are influencing directly the piston with higher heat load, and the thermal load of the engine.
Źródło:
Journal of KONES; 2018, 25, 3; 323-330
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane wskaźniki pracy silnika charakteryzującego się bezpośrednim wtryskiem paliwa do komory spalania
Indicators of engine performance with direct fuel injection to the combustion chamber
Autorzy:
Drabik, D.
Prażnowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/316391.pdf
Data publikacji:
2018
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
silniki o zapłonie iskrowym
wtrysk bezpośredni paliwa
wskaźniki pracy silnika
spark-ignition engines
direct fuel injection
engine operation parameters
Opis:
W artykule opisana została koncepcja bezpośredniego wtrysku paliwa i jego wpływ na wskaźniki pracy silnika. Silniki o zapłonie iskrowym ponownie stają się bardzo popularne wśród konsumentów. Spowodowane jest to przede wszystkim zastosowaniem bezpośredniego wtrysku paliwa, który to pozwala zwiększyć tak bardzo pożądaną sprawność ogólną silnika. Producenci silników określili jak pozytywne wyniki może przynieść bezpośrednie doprowadzenie paliwa do komory spalania. Artykuł opisuje wybrane wskaźniki pracy silnika, który wyposażony jest w wtrysk bezpośredni.
Spark-ignition engines are becoming very popular among consumers. It is mainly caused by using direct fuel injection, which increases the overall efficiency of the engine. Those positive effects were described by engine manufactures. This article presents some of the indicators of engine performance with direct fuel injection. It also describes the results of engine tests and characterizes performance of an engine. The idea of direct fuel injection is still being refined. Not only it is used in hybrid engines to supply fuel, but also in changing compression ratio in a combustion chamber. Ecological aspects are one of the most crucial when it comes to engine construction and each engine project must consider lowering its negative effects on the environment. In this article the comparison of fuel consumption and emission of harmful substances was presented.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 6; 405-408, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
Evaluation of the efficiency of the three-way catalytic converter of a spark ignition engine of the chosen aromatic hydrocarbons removing
Autorzy:
Skrętowicz, M.
Woźniak, J.
Wróbel, R.
Powiązania:
https://bibliotekanauki.pl/articles/133224.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
hydrocarbons
three-way catalytic converter
TWC
exhaust
benzene
toluene
xylenes
BTX
spark ignition engines
węglowodory
reaktor katalityczny trójfunkcyjny
spaliny
benzen
toluen
ksylen
silnik z zapłonem iskrowym
Opis:
In the paper the results of measurement of the most popular aromatic hydrocarbons (benzene, toluene and xylenes) in the exhaust of spark ignition engine before and after three-way catalytic reactor were presented. The investigations have been conducted at fixed rotational speed, 2500 rpm and at a few different values of torque in range 0 – 80 Nm, every 10 Nm. Based on obtained results, the calculations of catalytic reactor efficiency in removing analysed components have been made. The measurements showed high efficiency of the catalytic converter in reduction of that pollutants in exhaust gases.
Źródło:
Combustion Engines; 2017, 56, 2; 83-86
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
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 (NOx), 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
Artykuł
Tytuł:
Combustion characteristics of a spark-ignited split-cycle engine fuelled with methane
Autorzy:
Cameron, I.
Sobiesiak, A.
Powiązania:
https://bibliotekanauki.pl/articles/133567.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
spark ignition engines
split-cycle
methane
natural gas
CNG
fast burn
turbulence
silnik o zapłonie iskrowym
metan
gaz ziemny
turbulencje
Opis:
This paper begins with a brief introduction to the operating principles of a split-cycle engine that utilizes a valved, intermediary volume to connect the two engine cylinders. Results from experimental testing of the engine fueled with pure methane are presented with a particular emphasis on the combustion duration and phasing. Two different methods of analysing the combustion duration – the mass fraction burn (MFB) and normalized pressure ratio (PRN) – are given. Testing was performed at wide open throttle (WOT) for engine speeds ranging from 850–1200 rpm, and air-fuel equivalence ratios from 0.8–1.0. The results indicate that the main combustion duration is very rapid for all conditions tested, despite late combustion phasing. Changes in spark timing were shown to have a considerable impact on IMEP but did not greatly effect the burn duration. Cyclic variability of IMEP was found to be less than 4% for all cases, except when operation was leaner than ø = 0.85, indicating good combustion stability.
Źródło:
Combustion Engines; 2015, 54, 2; 33-41
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of compression ratio on combustion, turbulence, swirls into model combustion chamber of SI engines
Autorzy:
Leżański, T.
Sęczyk, J.
Wolański, P.
Powiązania:
https://bibliotekanauki.pl/articles/246616.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engines
spark ignition
combustion processes
new combustion systems
combustion process visualisation
Opis:
The results of the visualization researches, with the pressure measurement results are presented in the paper. Researches deal with the combustion system with semi-open combustion chamber for spark ignition engines. This system was elaborated in Aircraft Engine Department of Heat Engineering Institute of Warsaw University of Technology. During researches the influence of CR on a flame front propagation and turbulences into combustion chamber, when CR and ignition advance are varied, was determined. The model combustion chamber was made with the constant volumes ratio (the prechamber volume to the prechamber plus main combustion chamber volumes) of 28%. The CR were varied: 6:1, 8:1, 10:1 and 12:1, by changing of combustion chamber length and establish high. The researches were performed using rapid compression machine (RCM). The combustion sequences were recorded using high-speed digital camera with speed of 5000 frames per second. Simultaneously with combustion sequences recording, the high-speed pressure courses were registered. The research results show that the growth of compression ratio causes an improvement of combustion system performances; an increase of maximum cycle pressure and useful work field. The improvement of the performances is caused mainly by shortening of the combustion time and intensification of the turbulences and approaching of supposed combustion course.
Źródło:
Journal of KONES; 2015, 22, 4; 179-186
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielokierunkowe badania wpływu paliw wysoko-etanolowych na tworzenie osadów w silnikach z zapłonem iskrowym
Multidirectional investigations of high-ethanol fuels on deposit formation in spark ignition engines
Autorzy:
Stępień, Z.
Powiązania:
https://bibliotekanauki.pl/articles/133087.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
paliwa wysoko-etanolowe
osady
silniki z zapłonem iskrowym
high-ethanol fuels
deposits
spark ignition engines
Opis:
W artykule opisano właściwości użytkowe i problemy eksploatacyjne paliw stanowiących wysoko-etanolowe mieszaniny z benzyną. Przedstawiono silnikowe stanowisko badawcze i własną metodę badań wpływu mieszanin etanolu z benzyną na osady na zaworach dolotowych w komorach spalania i inne. Omówiono wyniki badań tendencji do tworzenia szkodliwych osadów na elementach układu dolotowego silnika flex fuel w zależności od składu paliwa, jego uszlachetniania, konstrukcji silnika i warunków jego eksploatacji. Wykazano ogromne znaczenie nowoczesnych dodatków detergentowych specjalnie opracowanych i kompatybilnych z paliwami o wysokiej zawartości etanolu w kontroli i przeciwdziałaniu tworzeniu się osadów w silniku.
This paper describes performance and operational issues of a high ethanol and gasoline fuel blends. Dynamometer engine test bench and special in-house test method for effect evaluation of ethanol and gasoline blends on intake valve deposits, combustion chamber deposits and other has been introduced. Investigation results of tendency for harmful deposit formation on various elements of flex fuel engine intake system resulting from the fuel composition, fuel treatment, engine construction and its operating parameters was reported. Great importance of modern deposit control additives specially formulated to be compatible with high ethanol fuels for providing control and counteracting deposit formation has been proved.
Źródło:
Combustion Engines; 2015, 54, 3; 608-618
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An overview of emissions of reactive nitrogen compounds from modern light duty vehicles featuring SI engines
O emisji reaktywnych związków azotu w spalinach nowoczesnych pojazdów samochodowych z silnikiem o zapłonie iskrowym
Autorzy:
Bielaczyc, P
Szczotka, A.
Woodburn, J.
Powiązania:
https://bibliotekanauki.pl/articles/133541.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
spark ignition engines
ammonia
NOx
nitrous oxide
reactive nitrogen compounds
unregulated emissions
silnik samochodowy o zapłonie iskrowym
amoniak
tlenki azotu
reaktywne związki azotu
nielimitowane związki szkodliwe
Opis:
This paper examines emissions of reactive nitrogen compounds in the exhaust gas flux of vehicles featuring spark ignition (SI) engines. A range of technical, legal and environmental aspects are considered. A discussion of the fundamentals of the phenomenon of emission of these compounds is presented, together with a brief summary of the negative environmental impacts of these gases. Selected data obtained during chassis dynamometer testing at BOSMAL are presented, together with certain important observations presented in the technical literature. The reader is directed to recent publications of note for further information on emissions to the less well known reactive nitrogen compounds, namely NH3 and N2O. The orders of magnitude of the various reactive nitrogen compounds found in the exhaust gas emitted from SI engines are briefly considered and commented upon. Data are presented on the impact of different fuel types used in SI engines and the reader is directed to various publications on that subject. Finally, important research directions (both current and future) are identified.
W artykule zawarto analizę problematyki emisji reaktywnych związków azotu w spalinach silników samochodowych o zapłonie iskrowym (ZI). Omówiono przyczyny powstawania tych związków w spalinach silnikowych, ich emisję oraz negatywny wpływ na środowisko. Przedstawiono wybrane wyniki badań emisji reaktywnych związków azotu w odniesieniu do pojazdów zasilanych paliwami konwencjonalnymi i alternatywnymi, uzyskane w testach emisji na hamowni podwoziowej. Prezentowane wyniki porównano do wyników z tego zakresu opisanych w literaturze. Przedstawiono obecne i przyszłe kierunki badań emisji związków azotu w spalinach silnikowych.
Źródło:
Combustion Engines; 2014, 53, 4; 48-53
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research effects of novel combustion system with semi-open combustion chamber using rapid compression machine
Autorzy:
Leżański, T.
Sęczyk, J.
Wolański, P.
Powiązania:
https://bibliotekanauki.pl/articles/245605.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engines
spark ignition
combustion processes
engine combustion systems
combustion process visualization
Opis:
The combustion system with semi open combustion chamber (SOCC) was originally elaborated in Aircraft Engine Department of Warsaw University of Technology. In this system the original combustion chamber of the standard SI engine, was divided by partition in prechamber and main combustion chamber, but yet this division exists only when the piston is close to TDC, on the contrary by the rest of the cycle the chambers are fully open. The system operation mechanism, the visualization research results, the high speed changed of the pressure measurements, was presented in this paper. The influence on the system performances of the different combustion systems parameters: the prechamber volume, the nozzle hole diameter in the partition, the ignition place, the compression ratio, and the ignition advance angle (IAA), on the basis of the research results, using rapid compression machine was presented in this paper. All research results show, that the best results of the system operation can be obtained if the stream outflow from prechamber to main combustion chamber starts when the piston is at TDC, and if the stream energy will be so big to displace all main combustion chamber before the clearance between partition and piston crown was opened. If the system operated correctly, the combustion time shortening, the growth of the maximum cycle pressure, and the combustion efficiency increase were obtained.
Źródło:
Journal of KONES; 2014, 21, 4; 297-310
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 25

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies