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Wyświetlanie 1-15 z 22
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:
Possible use of combined Diesel engine / steam turbine systems in ship power plants
Możliwości zastosowania układów kombinowanych: silnik Diesla – turbina parowa w siłowniach okrętowych
Autorzy:
Olszewski, W.
Powiązania:
https://bibliotekanauki.pl/articles/360519.pdf
Data publikacji:
2011
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
siłownie okrętowe
układy kombinowane
tłokowy silnik spalinowy
turbina gazowa
turbina parowa
ship power plants
combined systems
piston internal combustion engine
gas turbin
steam turbine
Opis:
The article presents a combined system of a large power ship power plant. The system consists of a piston internal combustion engine and the steam turbine system which utilises the energy transported with the exhaust gas leaving the internal combustion engine. The analysed variant of the combined cycle includes a Diesel engine and a steam turbine with a single-pressure waste-heat boiler. The numerical calculations were performed for two low-speed internal combustion engines made by Wärtsilä and MAN Diesel & Turbo, each of an approximate power output of 54 MW. The assumptions and limits which were used in the calculations done using a specially worked out code are included. The energy optimisation of the entire combined ship power plant was done taking into account only the thermodynamic point of view, leaving aside the technical and economic aspects.
W artykule przedstawiono układ kombinowany siłowni okrętowej dużej mocy. Składa się on z silnika spalinowego tłokowego i skojarzonego z nim układu turbiny parowej, wykorzystującego energię zawartą w spalinach wylotowych silnika spalinowego. Rozpatrzono tylko wariant obiegu kombinowanego silnik Diesla – turbina parowa, z kotłem utylizacyjnym jednociśnieniowym. Podano założenia i ograniczenia oraz wyniki ob-liczeń rozpatrywanego układu z opracowanego programu komputerowego. Optymalizację energetyczną całej kombinowanej siłowni okrętowej przeprowadzono tylko z punktu termodynamicznego. Nie zajmowano się analizą techniczno-ekonomiczną. Obliczenia numeryczne wykonano dla silników spalinowych wolnoobrotowych firmy Wärtsilä oraz MAN Diesel & Turbo o mocy około 54 MW.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2011, 28 (100) z. 1; 88-94
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of the impact of EGR on the knock limit in SI test engine
Numeryczna analiza wplywu EGR na granice spalania stukowego w badawczym silniku spalinowym
Autorzy:
Tutak, W.
Powiązania:
https://bibliotekanauki.pl/articles/793724.pdf
Data publikacji:
2011
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
internal combustion engine
thermal cycle
modelling
combustion
exhaust gas recirculation
knock limit
numerical analysis
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:
Numerical analysis of some parameters of SI internal combustion engine with exhaust gas recirculation
Analiza numeryczna wybranych parametrow pracy silnika ZI z recyrkulacja spalin
Autorzy:
Tutak, W.
Powiązania:
https://bibliotekanauki.pl/articles/792847.pdf
Data publikacji:
2011
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
internal combustion engine
combustion
exhaust gas recirculation
modelling
thermal cycle
engine parameter
knock combustion process
numerical analysis
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:
Modelling and verification failures of a combustion engine injection system
Modelowanie i weryfikacja uszkodzen ukladu wtryskowego silnika spalinowego
Autorzy:
Dziubinski, M.
Czarnigowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/793621.pdf
Data publikacji:
2011
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
internal combustion engine
verification failure
modelling
idle speed
control
sensor failure simulation
toxic gas
fuel consumption
engine work stability
Opis:
Growing pressure to improve the performance of IC engines has resulted in development of improved control systems. These requirements, combined with the introduction of control algorithms that could only be simulated experimentally were the foundations of control-oriented modelling techniques. The paper presents the assumptions and requirements toward control oriented models and a model of an idling SI engine. Some results of identification and verification tests of the model are presented for the 1.5 GLI engine. On the basis of the engine model, the simulation of sensor failures had been carried out.
Rosnące wymagania stawiane silnikom spalinowym przyczyniają się do wprowadzania nowych systemów sterowania Wymagania te związane są z opracowaniem nowych algorytmów sterowania, które powinny być wyznaczane drogą eksperymentalną i w postaci modelowania. Artykuł przedstawia przyjęte założenia i wymagania dotyczące modelowania w aspekcie sterowania wolnych obrotów silnika. Wybrane badania identyfikacji i weryfikacji w postaci testów przeprowadzono dla modelu silnika 1.5 GLI. Na bazie modelu silnika przeprowadzono symulacje typowych uszkodzeń czujników.
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11C
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of the burning process in the piston engines with various concepts of the working proces
Autorzy:
Natriashvili, Tamaz
Kavtaradze, Revaz
Glonti, Merab
Powiązania:
https://bibliotekanauki.pl/articles/1841216.pdf
Data publikacji:
2020
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
internal combustion engine
piston engine
diesel engine
gas engine
modeling
verification
burning model
silnik spalinowy
silnik tłokowy
silnik diesla
silnik gazowy
modelowanie
weryfikacja
model spalania
Opis:
In this paper, the results of modeling of the burning process in the piston engines whose working process is realized on the basis of various conceptual approaches are presented: in diesel with direct injection of the fuel; in a gas engine with spark ignition; and in a two-fuel engine (in the gas-diesel), where the mixture of natural gas and air ignites with the help of the fuse dose of the diesel fuel. The models of burning based on the different in-principle approaches are analyzed and used. Verification of the models is performed by a comparison of the results of modeling with the experimental diagrams. The specific values of the empirical coefficients, used in modeling of the burning proces in the engines under study, are determined. The practical recommendations on the choice of the burning model depending on the working process conception are given.
Źródło:
Transport Problems; 2020, 15, 1; 39-48
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Issledovanie rabochego processa dvigatelejj vnutrennego sgoranija po parametram toksichnosti
Investigation of working process of internal combustion engines on toxicity parameters
Autorzy:
Gerasimchuk, Y.
Powiązania:
https://bibliotekanauki.pl/articles/77579.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
internal combustion engine
economic characteristics
ecological characteristics
exhaust gas
toxicity
ecological index
working process
engine operation
Opis:
Для получения более полной и достоверной информации о рабочем процессе при исследовании двигателей внутреннего сгорания разработана и изготовлена система автоматического отбора проб газа непосредственно из цилиндра двигателя. Система газоотбора полностью автоматизирована с возможностью одновременного определения 24-х параметров в бензиновых и дизельных поршневых ДВС, включая роторно-поршневые, которая может обеспечить одноразовый, многоразовый и беспрерывный отбор проб газа с возможностью последующего химического анализа.
The subject of this research is improvement of economic and ecological characteristics of internal combustion engines (ICE) by control of every cycle of engine operation. Our work focuses on more accurate measurement of burnt gases directly in combustion chamber, providing information for deeper understanding of chemical processes going on during burning of fuel in combustion chamber. It will help to devise better algorithms for controlling ICE electronically.
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 3
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Issledovanie ehffektivnosti dizel-gazoturbinnojj ustanovki s termokhimicheskojj regeneraciejj tepla
Analysis of efficiency of diesel-gas turbine power plant with thermochemical heat recovery
Autorzy:
Cherednichenko, A.
Powiązania:
https://bibliotekanauki.pl/articles/76437.pdf
Data publikacji:
2015
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
diesel fuel
gas turbine
power plant
heat recovery system
waste heat
internal combustion engine
caloric value
thermodynamic property
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 2
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact evaluation of piston rings mobility on a gas passage in an internal combustion engine (ICE)
Autorzy:
Zarenbin, Volodymyr
Kolesnikova, Tatiana
Sakno, Olha
Ollo, Vasyl
Klimenko, Victor
Powiązania:
https://bibliotekanauki.pl/articles/196457.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
ring seal
internal combustion engine
piston ring mobility
calculation of gas escape
uszczelnienie pierścieniowe
silnik spalinowy
ruchliwość pierścieni tłokowych
obliczenie wycieku gazu
Opis:
To estimate the effect of the axial movement of piston rings in the piston grooves on the blow-by in the internal combustion engine (ICE) by an experiment- calculated method. This contributes to the development of practical recommendations for the further improvement of the engine ring seal designs. Abstract theorems were used when modelling the effect of the axial movement of piston rings in the piston grooves on the blow-by in an ICE. They are based on the fundamental theory of heat engines, thermodynamics and hydraulics. The ICE running was analysed using design-theoretical research methods. The effect of the axial movement of piston rings in the piston grooves on the blow-by in the ICE was established. This creates prerequisites for a more accurate assessment of their sealing capacity and for ways to further improve them. Calculated dependences for computing the blow-by depending on the positional relationship of the rings in the piston grooves were obtained. The dependences of gas escapes on the engine crankshaft speed were obtained, which is especially important for idling modes by which one can judge the dynamic stability of the ring seal and solve the problems of improving its service properties. The calculated dependences for evaluation of the blow-by depending on the positional relationship of the rings in the piston grooves and their respective possible gas flows in the ring seal were obtained for the first time. The practical method for estimating the dynamic stability of the ring seal by decencies of gas escape on the crankshaft rotation speed in ICE was proposed.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2019, 104; 187-201
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exhaust gas temperature measurements in diagnostics of turbocharged marine internal combustion engines. Part II Dynamic measurements
Autorzy:
Korczewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/258840.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
diagnostic
internal combustion engine
exhaust gas temperature
Opis:
The second part of the article describes the technology of marine engine diagnostics making use of dynamic measurements of the exhaust gas temperature. Little-known achievements of Prof. S. Rutkowski of the Naval College in Gdynia (now: Polish Naval Academy) in this area are presented. A novel approach is proposed which consists in the use of the measured exhaust gas temperature dynamics for qualitative and quantitative assessment of the enthalpy flux of successive pressure pulses of the exhaust gas supplying the marine engine turbocompressor. General design assumptions are presented for the measuring and diagnostic system which makes use of a sheathed thermocouple installed in the engine exhaust gas manifold. The corrected thermal inertia of the thermocouple enables to reproduce a real timehistory of exhaust gas temperature changes.
Źródło:
Polish Maritime Research; 2016, 1; 68-76
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exhaust gas temperature measurements in diagnostics of turbocharged marine internal combustion engines Part I standard measurements
Autorzy:
Korczewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/259776.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
diagnostic
internal combustion engine
exhaust gas temperature
Opis:
The article discusses the problem of diagnostic informativeness of exhaust gas temperature measurements in turbocharged marine internal combustion engines. Theoretical principles of the process of exhaust gas flow in turbocharger inlet channels are analysed in its dynamic and energetic aspects. Diagnostic parameters are defined which enable to formulate general evaluation of technical condition of the engine based on standard online measurements of the exhaust gas temperature. A proposal is made to extend the parametric methods of diagnosing workspaces in turbocharged marine engines by analysing time-histories of enthalpy changes of the exhaust gas flowing to the turbocompressor turbine. Such a time-history can be worked out based on dynamic measurements of the exhaust gas temperature, performed using a specially designed sheathed thermocouple. The first part of the article discusses possibilities to perform diagnostic inference about technical condition of a marine engine with pulse turbocharging system based on standard measurements of exhaust gas temperature in characteristic control cross-sections of its thermal and flow system. Selected metrological issues of online exhaust gas temperature measurements in those engines are discusses in detail, with special attention being focused on the observed disturbances and thermodynamic interpretation of the recorded measuring signal. Diagnostic informativeness of the exhaust gas temperature measurements performed in steady-state conditions of engine operation is analysed in the context of possible evaluations of technical condition of the engine workspaces, the injection system, and the fuel delivery process.
Źródło:
Polish Maritime Research; 2015, 1; 47-54
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exhaust gas recirculation strategy in the hydrogen SI engine
Autorzy:
Szwaja, S.
Naber, J. D.
Powiązania:
https://bibliotekanauki.pl/articles/243087.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
hydrogen
exhaust gas recirculation (EGR)
Opis:
It is known that Exhaust Gas Recirculation (EGR) can be successfully applied not only for reducing NOx content in exhaust gases but also for reduction of combustion knock in SI engines. From this point of view, EGR can be particularly effective for knock elimination in the hydrogen reciprocating engine. Additionally with the application of EGR, the H2-air combustion can be maintained at the stoichiometric ratio enabling highly efficient NOx reduction in catalytic converters. In this paper a strategy of estimating EGR for the naturally aspirated, hydrogen fuelled engine is explained. On the basis of this strategy, the closed loop control system of the EGR was built and was implemented for the single cylinder CFR engine. There is also an outline of the test bed and several examples of in-cylinder pressure courses recorded under various EGR percentages. Next, the impact of EGR on combustion knock in the hydrogen fuelled engine is presented. Finally, conclusions concerning EGR application for hydrogen combustion in the IC engine are presented. EGR calculation and control scheme, main diagram of EGR calculation, subroutine (Sub-block) for calculating the molecular weight of EGR gases, in-cylinder pressure traces for several EGR levels during hydrogen combustion in the CFR engine, the fluctuating component of in-cylinder pressure during hydrogen combustion with several levels of EGR, peak pressure of fluctuation component of in-cylinder pressure vs. EGR percentage are presented in the paper.
Źródło:
Journal of KONES; 2007, 14, 2; 457-464
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computerised system of research of automobile and tractor engines
Autorzy:
Holovchuk, A.
Kovalyshyn, S.
Habriyel, Yu.
Zholobko, V.
Powiązania:
https://bibliotekanauki.pl/articles/411102.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
fuel flowmeters
gas meter
shaft speed
internal combustion engine
electronic diagnostics
personal computer
electronic controller
Opis:
It is offered the automated complex for carrying out experimental researches automobiles and tractors engines with program realization of monitoring of a kind speed-mode on coefficient to non-uniformity of a course. In the developed installation it is automated processes definition, on dynamic modes, the expenditure of air and fuel and coefficient surplus of air and provided an opportunity of a direct estimation of quality of a transitive mode of engines.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2015, 4, 4; 55-58
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparing combined gas tubrine/steam turbine and marine low speed piston engine/steam turbine systems in naval applications
Autorzy:
Dzida, M.
Olszewski, W.
Powiązania:
https://bibliotekanauki.pl/articles/260049.pdf
Data publikacji:
2011
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine power plants
combined systems
piston internal combustion engine
gas turbine
steam turbine
Opis:
The article compares combined systems in naval applications. The object of the analysis is the combined gas turbine/steam turbine system which is compared to the combined marine low-speed Diesel engine/steam turbine system. The comparison refers to the additional power and efficiency increase resulting from the use of the heat in the exhaust gas leaving the piston engine or the gas turbine. In the analysis a number of types of gas turbines with different exhaust gas temperatures and two large-power low-speed piston engines have been taken into account. The comparison bases on the assumption about comparable power ranges of the main engine.
Źródło:
Polish Maritime Research; 2011, 4; 43-48
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combustion in a supercharged biomass gas engine with micro-pilot ignition - effects of injection pressure and amount of diesel fuel
Autorzy:
Tomita, E.
Fukatani, N.
Kawahara, N.
Maruyama, K.
Komoda, T.
Powiązania:
https://bibliotekanauki.pl/articles/243110.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
cogeneration
pyrolysis gas
biomass gas
visualization
Opis:
It is one of the solutions to use biomass as fuel in order to realize a sustainable society and to reduce carbon dioxide emission .A single cylinder with supercharged and micro-pilot gas engine operated with four kinds of pyrolysis gas as fuel for cogeneration use. The effects of injection pressure and amount of diesel fuel on engine performance and exhaust emissions were investigated. The combustion periods of initial and main stages were determined from the analysis of mass fraction burned. The combustion process was also visualized with a colour highspeed video camera. Main results obtained in this study are as follows: When the amount of diesel fuel increased in the same injection pressure, smoke was exhausted. However, the smoke was reduced with higher injection pressure. The period of the initial combustion is almost the same even if injection pressure and amount of diesel fuel increases. Therefore, it is enough to ignite the mixture with small amount of diesel fuel. For the case with lower calorific gas, the period of main combustion was shortened owing to the combustion of diesel fuel when the amount of diesel fuel increases. When the mixture contains much hydrogen, the period of main combustion does not become small in higher injection pressure and larger amount of diesel fuel. On the other hand, when the mixture does not contain much hydrogen, the effect of diesel fuel becomes strong.
Źródło:
Journal of KONES; 2007, 14, 2; 513-520
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
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