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    Tytuł:
    Osobennosti trekhstadijjnogo processa sgoranija
    Features of engine with three-stage combustion
    Autorzy:
    Suprovich, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/76840.pdf
    Data publikacji:
    2015
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    fuel economy
    engine
    ionization
    combustion chamber
    two-stage combustion system
    three-stage combustion system
    laboratory test
    Źródło:
    Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 1
    1730-8658
    Pojawia się w:
    Motrol. Motoryzacja i Energetyka Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theoretical analysis of air-fuel mixture formation in the combustion chambers of the gas engine with two-stage combustion system
    Autorzy:
    Jamrozik, A.
    Tutak, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/201585.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    two-stage combustion system
    prechamber
    stratified mixture
    dwustopniowy system spalania
    komora wstępna
    mieszanina warstwowa
    Opis:
    The results of theoretical analysis of a mixture formation process during the compression stroke in a prechamber of the IC (internal combustion) gas engine with the stratified mixtures two-stage combustion system were presented in the paper. The course of excess air-fuel ratio changes in prechamber at ignition time λkz in function of degree of the mixture condensation during the compression stroke φ expressing quotient of a temporary cylinder and prechamber volume and maximal value of the volume were estimated. Research concerning λkz sensitivity on changes of rich combustible mixture composition delivered to the prechamber by the additional fuel supply system λko, mixture composition in cylinder _c and degree of filling a prechamber with the rich combustible mixture ξ were performed. According to numerical calculations it was proved that the real gas engine with the two stage combustion system at equal degree requires exact regulation of the three analysed values.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 4; 779-790
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of indication errors of the SI gas engine with a prechamber
    Analiza bledow indykowania gazowego silnika ZI z komora wstepna
    Autorzy:
    Jamrozik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/793719.pdf
    Data publikacji:
    2011
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    engine
    two-stage combustion system
    excess air factor
    indicated work
    gas engine
    prechamber
    thermal process
    internal combustion engine
    spark ignition
    piston engine
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A study of performance and emissions of SI engine with a two-stage combustion system
    Autorzy:
    Jamrozik, A.
    Tutak, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/185841.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    silnik z dwustopniowym systemem spalania
    współczynnik nadmiaru powietrza
    engine with two-stage combustion system
    prechamber
    excess air factor
    indicated work
    indicated efficiency
    non-repeatability factor of the indicated work
    Opis:
    Lean mixture burning leads to a decrease in the temperature of the combustion process and it is one of the methods of limiting nitric oxide emissions. It also increases engine efficiency. An effective method to correct lean mixture combustion can be a two-stage system of stratified mixture combustion in an engine with a prechamber. This article presents the results of laboratory research on an SI engine (spark ignition) with a two-stage combustion system with a cylinder powered by gasoline and a prechamber powered by propane-butane gas LPG (liquefied petroleum gas). The results were compared to the results of research on a conventional engine with a one-stage combustion process. The test engine fuel mixture stratification method, with a two-stage combustion system in the engine with a prechamber, allowed to burn a lean mixture with an average excess air factor equal to 2.0 and thus led to lower emissions of nitrogen oxides in the exhaust of the engine. The test engine with a conventional, single-stage combustion process allowed to properly burn air-fuel mixtures of excess air factors X not exceeding 1.5. If the value X > 1.5, the non-repeatability factor COVLi increases, and the engine efficiency decreases, which makes it virtually impossible for the engine to operate. The engine with a two-stage combustion process, working with X = 2.0, the QmlQim = 2.5%, reduced the NOx content in the exhaust gases to a level of about 1.14 g/kWh. This value is significantly lower than the value obtained in a conventional engine, which worked at X = 1.3 with comparable non-repeatability of successive cycles (about 3%) and a similar indicated efficiency (about 34%), was characterised by the emissions of NOx in the exhaust equal to 26.26 g/kWh.
    Źródło:
    Chemical and Process Engineering; 2011, 32, 4; 453-471
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation of work of an engine working with combustion initiation from ignition dose of fuel
    Autorzy:
    Sendyka, B.
    Mitianiec, W.
    Noga, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/245989.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    modelling
    simulation
    combustion engine
    HCCI
    two stage injection system
    Opis:
    The paper presents analysis of fuelling and of the course of combustion process for a two-cycle engine. The main idea of the engine according to patent solution of Prof. B. Sendyka consists in the fact that engine work begins from spark ignition, whereas, at higher load and higher temperature in the cooling system there occurs switching off spark ignition and transition to ignition from an ignition dose injected directly into the combustion chamber. Such an engine possesses two injection systems: one system of multi-point injection which forms homogenous mixture, whereas, the other system of direct injection is used for ignition dose injection only. After injection of the ignition dose of a very small mass combustion is initiated on the basis of formation of auto-ignition centres so as it takes place during knock combustion. Auto-ignition centres initiate combustion of the basic charge. Simulation was carried out in order to perform analysis occurring phenomena of fuel feeding and combustion. Works on it started from elaboration of a computational grid of the engine and subsequently analysis of indicated diagrams of engine work with injection of ignition dose was performed. Analysis was also performed of temperature traces and of traces of charge mass change in the cylinder as well as of participation of the mass of basic fuel dose in the cylinder in function of the crank angle. Moreover visualization of effects of the process of mixture formation and combustion was performed and presented in form of illustrations of charge temperature distribution, fraction of fuel ignition and basic dose vapours in cross-sections of the combustion chamber.
    Źródło:
    Journal of KONES; 2011, 18, 3; 395-403
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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