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    Wyświetlanie 1-7 z 7
    Tytuł:
    Alternative fuels for combustion engines. New ways to power vehicles
    Alternatywne paliwa dla silników wysokoprężnych. Nowe metody doładowania samochodów
    Autorzy:
    Mysłowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/262937.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
    Tematy:
    metody doładowania
    paliwa alternatywne
    proces spalania
    silnik wysokosprężny
    alternative fuels
    combustion engin
    combustion process
    wayd to power
    Opis:
    The paper presents results of search and analysis. The ongoing difficulties with fuel and energy are the reason for continuous search for new energy carriers and trials to limit the energy consumption, which will result in reduction of harmful impact on the environment. It presents some ways to find new kinds of fuels and some technical methods to arrange this process.
    Artykuł prezentuje wyniki badan i analiz. Trwające trudności paliwowo-energetyczne powodują stałe poszukiwania nowych nośników energii oraz próby ograniczenia jej zużycia, co będzie skutkowało zmniejszeniem szkodliwego oddziaływania na otoczenie. W artykule przedstawiono drogi poszukiwań nowych paliw i niektóre aspekty techniczne organizacji procesu spalania.
    Źródło:
    Archiwum Motoryzacji; 2008, 2; 111-120
    1234-754X
    2084-476X
    Pojawia się w:
    Archiwum Motoryzacji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation of injection and combustion processes in 4-stroke spark ignition engine with CNG direct injection
    Autorzy:
    Sendyka, B.
    Mitianiec, W.
    Noga, M.
    Wachulec, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/246095.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    injection process
    combustion process
    simulation
    modelling
    alternative fuels
    CNG
    Opis:
    The paper presents results of simulation conducted as afirst step of 4-stroke spark ignition experimental engine testing. The simulations were performed in a KIVA-3Vsoftware, which is intended to carry out a 3-D simulations of engine's processes. The source code of the software has been modified in order to apply it for gas injection. Original version of the software has been designedto simulate liquid fuel injection only. The simulation of direct CNG injection and combustion has been done for stratified and homogenous modes in order to check the assumed injection, ignition and charging parameters. Important assumption is that the injector had only one nozzle with flow area equal to 2 mm2. Two different cases of fuel direct injection for stratified charge have been analysed. In the first case fuel jet was almost vertical. In the other one fuel jet was nearly horizontal. Further testing has been performed using one-cylinder motorcycle 4-stroke SUZUKI DR-Z400S engine adapted to CNG fuelling. Such an engine has a suitable high compression ratio for CNG fuelling. The simulation has confirmed assumed parameters and has shown that one nozzle injector doesn't provide required fuel stream dissipation and piston crown modification is needed to direct fuel stream in spark plug area. However doing simulation requires some effort this example has shown than this is very important step before conducting experimental tests which provides crucial information and helps to avoid expensive mistakes which can be made during experimental engine preparation.
    Źródło:
    Journal of KONES; 2010, 17, 1; 373-378
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania rozwoju i przebiegu procesu spalania alternatywnych paliw gazowych i ich mieszanek z wodorem w silniku ZI
    An investigation on initiation and course of combustion process in SI engine fueled with alternative gas fuels and its hydrogen blends
    Autorzy:
    Kubica, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/197253.pdf
    Data publikacji:
    2008
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    silnik ZI
    paliwa gazowe
    paliwa alternatywne
    proces spalania
    SI engine
    gaseous fuels
    alternative fuels
    combustion process
    Opis:
    W opracowaniu przedstawiono wyniki badania wpływu rodzaju paliwa na przebieg spalania w silniku ZI. Wyselekcjonowana grupa paliw obejmowała alternatywne paliwa gazowe: LPG, CNG oraz mieszanki metanu z wodorem i benzynę bezołowiową 95 jako paliwo bazowe. Obiektem badań był silnik ZI, oznaczony kodem X16SZR w samochodzie Opel Astra I. Przeprowadzone badania obejmują pomiary ciśnienia indykowanego na stanowisku hamownianym oraz szczegółową analizę przemian termodynamicznych, zachodzących w zamkniętej komorze spalania. Analizy składników bilansu energii dokonano wykorzystując program o nazwie "EnComTwo", który realizuje założenia matematycznego modelu dwustrefowego. Analizie poddano poszczególne fazy procesu spalania ze szczególnym zwróceniem uwagi na takie aspekty, jak: zmiany ciśnienia indykowanego, przebieg wydzielania energii w trakcie spalania, długość procesu spalania i czas spalania ładunku.
    The results of research an influence of fuel kind on combustion process in SI engine are presented in this paper. Selected fuels group include alternative gas fuels: LPG, CNG, hydrogen - CNG blends and unleaded gasoline 95 as a base fuel. SI engine X16SZR in Opel Astra I was investigated. The leaded tests include measurement results of dynamometer chassis test, as well as the detailed analysis of thermodynamic processes inside closed chamber. The aplication "EnComTwo", which resolves assumptions of mathematical model, was used in analysing of engine thermal balance. Combustion process was investigated in each of individual phases: initiation, dynamical combustion and flame extinguish. The most important parameters were: indicated pressure, heat released, combustion duration and time of combustion.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2008, 64; 159-166
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer-aided diagnostics of injection and combustion processes in engines equipped with Common Rail fuel injection
    Autorzy:
    Lotko, Wincenty
    Powiązania:
    https://bibliotekanauki.pl/articles/2146748.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    Diesel engine
    alternative fuels
    quick-changing parameters
    injection process
    combustion process
    uniqueness of injection
    uniqueness of combustion process
    diagnostic process
    silnik Diesla
    paliwa alternatywne
    proces wtrysku
    proces spalania
    niepowtarzalność procesu spalania
    diagnostyka
    Opis:
    In earlier designs, the compression-ignition engine units were controlled by means of mechanical elements. They were levers, rods, springs, pawls, cams and others. The quality of such control did not ensure the required repeatability of control parameters in the fuel injection and combustion process. After the introduction of the standards limiting engine emissions of the limited exhaust components, the aforementioned engine control systems were not able to meet the requirements. The mechanical regulation of mechanical systems has been replaced by electronic control systems. It was the development of computer techniques and software that enabled design solutions of control systems for injection and combustion process parameters in engines with sufficient accuracy and repeatability of test results. The modern EDC (Electronic Diesel Control) control system, due to the computing power of microprocessors increased in recent years, enables meeting high requirements of modern Common Rail injection systems. The article presents issues in the area of four thematic levels: the design and modernization of the engine, its operation, diagnostic problems in order to determine reasons of unit failures and bench-top methods for assessing the effectiveness of unit repairs as well as issues concerning alternative fuels.
    Źródło:
    Diagnostyka; 2022, 23, 4; art. no. 2022407
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theoretical approach to modeling the combustion process in turbine engines fuelled by alternative aviation fuels containing various components/biocomponents
    Autorzy:
    Kulczycki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/133680.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    diesel fuel
    jet fuel
    mathematical model
    combustion process
    olej napędowy
    paliwo lotnicze
    model matematyczny
    proces spalania
    Opis:
    The aim of this paper is presentation of the possibility of combustion processes modelling so that to better describe the influence of fuels chemistry on fuels combustion. This is important for prediction the behaviour of different alternative fuels in processes in combustion chamber. Currently used mathematical models do not sufficiently take into account the influence of fuels chemical composition on combustion process. The idea of new mathematical model is proposed in this paper. The paper presents the main assumptions of this model and the results of its preliminary verification using MiniJetRig.
    Źródło:
    Combustion Engines; 2017, 56, 4; 245-249
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary research of the diesel knock phenomenon with using of the crankshaft acceleration method
    Autorzy:
    Górski, K.
    Lotko, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/242350.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    diesel knock
    transient conditions
    combustion process
    acceleration method
    wavelet transform
    alternative fuels
    Opis:
    Paper presents an experimental study on the pressure variations inside of 3 - cylinder, a direct injection AD3.152 type diesel engine. The main aim of the preliminary engine test was to use of the crankshaft free acceleration method for detection of diesel knock phenomenon. For this research, each combustion chamber was equipped with AVL cooled pressure sensor mountedat the top of engine head. Using of such sensors and special prepared at Technical University of Radom data acquisition system allow to record time histories of in-cylinder pressure variations at conditions of free acceleration of the engine crankshaft. Results presented in this paper show, that such transient engine conditions can be successfully used for detection of diesel knock phenomenon. High frequency pressure oscillations, typical for knocking were observed in the first phase of the acceleration process for selected combustion chambers. Experimental tests have been done for engine fuelled with regular diesel oil (DF) and its blend with Ethyl Tert Butyl Ether (ETBE) used as an oxygenated additive. Engine test procedure, used methodology and data acquisition system and engine test results carried out in non-stationary conditions with using of crankshaft acceleration method are presented in the paper.
    Źródło:
    Journal of KONES; 2009, 16, 2; 141-148
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of adding 2-ethylhexanol to jet fuel on the performance and combustion characteristics of a miniature turbojet engine
    Autorzy:
    Gawron, B.
    Białecki, T.
    Król, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/247180.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    alternative fuels
    alcohol to jet
    combustion process
    miniature jet engine
    exhaust emission
    paliwa alternatywne
    proces spalania
    miniaturowy silnik odrzutowy
    emisja spalin
    Opis:
    There are currently many studies undergoing in the field of using alternative fuels for supplying different types of propulsion units. The ASTM standard in the aerospace industry, allows using five different technologies of manufacturing synthetic components apart from standard oil-based fuel for the propulsion of turbine engines (as a blend up to 50% with conventional fuel). One of these is a technology associated with the process of converting alcohols (isobutanol) to jet fuel – Alcohol to Jet (ATJ). In the research performance, emission parameters were measured on laboratory test rig with miniature turbojet engine (MiniJETRig). The test rig has been created in Air Force Institute of Technology for research and development works aimed at alternative fuels for aviation. The miniature engine was fuelled with conventional jet fuel – Jet A-1 and blend of Jet A-1 with 2-ethylhexanol. The results for this blend were compared with the results obtained for neat Jet A-1 fuel in terms of different engine operating modes, according to specified methodology. The conducted tests did not show significant differences in engine operating parameters (thrust, fuel consumption and thrust specific fuel consumption) and the values of CO, CO2 and NOx emission indices between the tested fuels. The engine tests took place in similar ambient conditions. Laboratory tests of selected physicochemical properties were also carried out for both fuel samples.
    Źródło:
    Journal of KONES; 2018, 25, 1; 101-109
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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