Temat: fuel injection pressure - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The theoretical study on influence of fuel injection pressure on combustion parameters of the marine 4-stroke engine
Autorzy:: Kowalski, J.
Powiązania:: https://bibliotekanauki.pl/articles/243749.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine engine
multidimensional model
combustion model
fuel injection pressure
CFD
Opis:: The manuscript presents the analysis of influence of fuel injection pressure on the combustion parameters of marine 4-stroke diesel engine. Analysis is based on computational fluid dynamic (CFD) model designed on the basis of the motion mesh of combustion chamber of the marine engine cylinder and air inlet and exhaust gas ducts. Presented model consists of models of fuel injection into combustion chamber, breaking-up and evaporation of the fuel, mixing with air and turbulent combustion with heat transfer to construction elements of the engine cylinder. Mentioned CFD model is validated according to boundary and initial conditions taken from direct measurements. The chosen research object is laboratory 4-stroke turbocharged Diesel engine with direct injection of the fuel and mechanically controlled of both cylinder valves and the injector. During the calculation the fuel dose, delivered into the engine cylinder was changed without any other changes in the initial and boundary conditions. This approach to the problem allows to the cause-effect analysis. The results of presented study are as follows: The increase of the fuel injection pressure causes the increase of fuel dose, delivered into the engine cylinder and the increase of intensity of both kinetic and diffusion stage of the combustion process. The result of this is the increase of pressure and temperature of the combustion and significant increase of the NOx fraction despite the decrease of the O2 content in the combustion chamber of the engine.
Źródło:: Journal of KONES; 2016, 23, 1; 161-168
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The effect of length of high pressure pipes on injection process in common rail system of diesel engine
Autorzy:: Ustrzycki, A.
Kuszewski, H.
Woś, P.
Powiązania:: https://bibliotekanauki.pl/articles/247609.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: common rail
fuel injection
injection control
high-pressure pipe
Opis:: The storage supply systems of Common Rail type are characterized by high possibilities in shaping the rate of injection. The possibility to implement multi-injection at high pressure, easiness of adapting the system to the engine, relatively easiness of compensation the arrangement of injector parameters resulting from work tolerance, as well as easiness of making changes in the electronic engine controller enabling the production of engines with various performances, cause that type of these solutions currently are widely used injection systems in diesel engines. Injection system should be characterized above all by high precision fuel dosing into engine cylinders, the accuracy in starts controlling of individual phase of injection, repeatability and reliability and durability, as well as the up keep of these parameters for long time during operating duration. Fuel injection system works in difficult conditions resulting from high pressure, vibrations, electromagnetic interference affecting electronic executive systems and high temperatures. Especially the injector and injection pipes are open to high temperatures. The dimensions of used elements are also important. The article presents selected results concerning the effect of the length of high-pressure pipes on injection process parameters such as fuel amount, overflow in injector, and the fuel pressure course in injection pipe in front of electromagnetic injector socket. The study was conducted with test stand with electronic measurement system of fuel amount. The tests were made at different pressures in the rail and for different durations of the injector opening.
Źródło:: Journal of KONES; 2010, 17, 3; 477-482
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The effect of fuel injection parameters on the combustion process in a self-ignition engine
Autorzy:: Imiołek, M.
Piętak, A.
Wierzbicki, S.
Powiązania:: https://bibliotekanauki.pl/articles/243984.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: injection pressure
injector opening time
fuel injection advance angle
Opis:: This paper presents the effect of the main parameters of fuel injection, such as injection angle and injector opening time, on the combustion process in a self-ignition engine. The study continues the research aimed at optimising the bi-fuel feeding of self-ignition engines with a main fuel dose of methane (CNG). The results described in the paper apply to a HATZ 1B40 one-cylinder engine, which was adapted for being powered with methane. Examinations of the engine powered with a pilot dose of mechanically-injected diesel oil revealed the necessity to adjust the fuel injection advance angle. To this end, the mechanical system offuel supply was replaced with a Common Rail, with controllable fuel injection pressure, fuel injection advance angle and injector opening time. The results presented in the paper show the characteristics of the injector output depending on the fuel pressure in the Common Rail and on the duration of the electric impulse which opens the injector. Moreover, the article presents examples of pressure courses in the combustion chamber at a constant fuel dose and with a different fuel injection advance angle. An example of the combustion pressure course at a constant fuel dose and variable injection pressure and injector opening time is given.
Źródło:: Journal of KONES; 2010, 17, 3; 143-148
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The effect of pressure in a common rail accumulator on engine operating parameters
Autorzy:: Gołębiewski, W.
Powiązania:: https://bibliotekanauki.pl/articles/247960.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Common Rail fuel injection system
accumulator pressure
engine-operating parameters
Opis:: The issues addressed in this paper concern the effect of pressure in the Common Rail accumulator on the engine operating parameters such as its torque, power output, rotational speed as well as its hourly and specific fuel consumption. Here, the research methods were performed by using the engine test bench strictly in accordance with the specific standards but particularly according to the requirements specified by these standards. The research station was the Fiat Multijet 1.3 JTD engine with turbocharging and direct injection, used as a power unit in the motor cars. Additionally, the experimental tests were run by using also (1) the HP-made measuring set for measurements the high pressure (up to 2,500 bars) in the Common Rail system, and (2) the CDIF/2 diagnostic interface. All relationships are presented in the form of graphs, and what is found here is the increasing linear relationship between the p rail pressure and the engine speed: with an increase in speed comes a decrease in the total injection time. The torque and its power output were a function of both the pressure in the Common Rail accumulator and the speed. It was found that the highest total engine efficiency (fuel consumption per unit) was for the rail pressure ranging from 1,000 to 1,100 bars. The findings come up for discussion about the apt choice of pressure in the rail, together with the total injection time and the turbocharger highest efficiency, for the specified speed of a car power unit.
Źródło:: Journal of KONES; 2012, 19, 1; 139-145
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Effect of the parameters of pilot dose injection in a dual fuel diesel engine on the combustion process
Autorzy:: Wierzbicki, S.
Powiązania:: https://bibliotekanauki.pl/articles/246181.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engine
injection pressure
injector opening time
fuel injection advance angle
course of combustion
Opis:: The paper presents the effect of the main parameters of pilot dose ignition: injection pressure, injection advance angle and injector opening time on the combustion process in a dual fuel diesel engine. The study continues the research conducted at the Department of Mechatronics of the University of Warmia and Mazury, Olsztyn, on optimisation of dual fuel self-ignition engines with CNG as the main fuel dose. The results presented in the paper were obtained with a single-cylinder engine HATZ 1B40, adapted to methane combustion. The results presented in the paper show the recorded changes of pressure in the combustion chamber with a constant fuel pilot dose and different ignition advance angles. Scheme of fuelling and measurement systems, view of engine indicating system, average changes of pressure in the combustion chamber, average changes of pressure in the combustion chamber and average changes of pressure in the combustion chamber at dual fuel engine supply with diesel oil at varied pilot dose injection angle, effects of advance angle of the pilot dose injection on the maximum pressure of combustion, at various proportions of diesel oil and CNG, average changes of pressure in the combustion chamber at double-fuel engine fuelled with diesel oil and various shares of methane in the dose powering the engine, CNG consumption as a function of the advance angle of the pilot dose injection for various shares of the pilot dose are presented in the paper.
Źródło:: Journal of KONES; 2011, 18, 3; 499-506
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Optimization of injection pressure for fuel consumption and exhaust emissions in a dimethyl ether (DME) engine with a common rail type injection system
Autorzy:: Yanai, T.
Konno, M.
Sato, Y.
Oikawa, H.
Nozaki, S.
Powiązania:: https://bibliotekanauki.pl/articles/247403.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engines
alternative fuels
DME
common rail
injection pressure
fuel consumption
emissions
Źródło:: Journal of KONES; 2010, 17, 2; 511-518
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Fuel feed to diesel at a start regime
Autorzy:: Fedyanov, E.
Slavuckiy, V.
Kanygin, Z.
Powiązania:: https://bibliotekanauki.pl/articles/246126.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: starting duty
features of process of giving
nozzle valve lifting
injection pressure
transients
cyclic fuel delivery
Opis:: Some factors defining starting properties of diesel engines are considered. Features of process of fuel feed on a starting mode are analyzed. Basic possibility of steering by processes of mixture forming and combustion is proved at a small speed of a crankshaft. Developed a design procedure of process of fuel feed in a diesel engine at a start regime. On the basis of the theory of transients in a fuel system, the reasons of deterioration of indicators of fuel feed process are explained at a start regime of diesel engine. Possibilities of a method of increase of initial pressure in a delivery highway by prostrating scrolling of a crankshaft with idle spray jets are investigated. The method of intensification of fuel feed process patented by authors used in diesel engine at a start regime. The results of numerical experiments confirming improvement of indicators of process of injection at high-speed speeding up of the pump of a high pressure are resulted: Increase maximum and an average pressure, cutting-down of duration of fuel feed process. The paper concentrates on possibility of improving fuel fed process at the starting regime by means of high speed forcing the fuel pump and the initial pressure rising by an earlier camshaft rotation with out of work injectors.
Źródło:: Journal of KONES; 2009, 16, 1; 111-116
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Researches of possibilities of lowering the toxicity of ship diesel exhaust gases by changing the chosen control parameters
Badanie możliwości obniżenia toksyczności spalin silników okrętowych przez zmianę wybranych parametrów regulacyjnych
Autorzy:: Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/242693.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: okrętowe silniki spalinowe
zanieczyszczenie atmosfery
ciśnienie powietrza doładowania
kąt wyprzedzenia wtrysku paliwa
diesel ship engines
atmospheric pollution
charging air pressure
fuel injection advance angle
Opis:: This paper describes the issues of atmospheric pollution created by ship engines. Not long ago the most important issue of ship engine construction was to lower fuel consumption and achieve high durability and reliability. In the recent years another problem has risen. A ship engine must meet more and more strict demands made on account of natural environment - the emission of toxic combustion products to the atmosphere. Although the share of ship engines in global toxic product emission was only 7% nitric oxides (NOx) and 4 - 5% sulphur oxides (SOx), the International Maritime Organization (IMO) and the Marine Environment Protection Committee (MEPC) in November of1990 proposed to reduce the emission of NOx by 70% and SOx by 50% by the year 2000. As the outcome of conducted procedures appropriate changes were made to MARPOL Convention in the form of Appendix VI. In this paper the effects of the influence of the chosen regulation parameters changes (charging air pressure and fuel injection advance angle) on the contents of the exhaust gasses of a diesel engine burning heavy oil fuel are presented and discussed. Necessary research was carried out in Gdynia Maritime Academy. Extraordinary attention was paid to successful reduction of nitric oxides (NOx) in the exhaust gasses. It was proven that decreasing the charging air pressure and increasing the fuel injection delay together lead to significant reduction of the amount of nitric oxides in ship engine exhaust gasses burning heavy oil fuel. Laboratory research was carried out using heavy fuels in a close-to-real environment. Therefore their results may be taken under consideration by ship owners. Considering the possibility of making necessary adjustments by the ship crew, which would lead to similar results, this method could also be used in practice, especially on older engines which usually do not conform to MARPOL Convention, Appendix VI with their nitric oxides emissions.
Artykuł poświęcony jest problemom związanym z zanieczyszczaniem atmosfery przez silniki okrętowe. Do niedawna najważniejszym problemem w budowie silników okrętowych było zmniejszenie zużycia paliwa oraz osiągnięcie ich dużej trwałości i niezawodności. W ostatnich latach pojawił się kolejny problem. Silnik okrętowy musi spełniać coraz ostrzejsze wymagania stawiane ze względu na ochronęśrodowiska naturalnego - emisję toksycznych produktów spalania do atmosfery. Wprawdzie udział silników okrętowych w emisji toksycznych składników wynosi w skali globalnej około 7% w przypadku tlenków azotu (NOx) i 4-5% dla tlenków siarki (SOx), to jednak Międzynarodowa Organizacja Morska (IMO) i Komitet d/s Ochrony Środowiska Morskiego (Marine Environment Protection Committee - MEPC) przy IMO, w listopadzie 1990 roku zaproponowały zmniejszenie emisji do 2000 roku NOx o 70% i SOx o 50%. W wyniku prowadzonej procedury legislacyjnej odpowiednie zapisy wprowadzono do konwencji MARPOL w postaci załącznika VI. W artykule zaprezentowano i przedyskutowano poparte wynikami badań laboratoryjnych przeprowadzonych w Akademii Morskiej w Gdyni rezultaty wpływu zmian wybranych parametrów regulacyjnych (ciśnienia powietrza ładującego i kąta wyprzedzenia wtrysku) na skład spalin silnika wysokoprężnego zasilanego paliwem ciężkim. W badaniach w szczególności zwracano uwagę na skuteczną możliwość obniżenia w spalinach zawartości tlenków azotu (NOx). Wykazano, że spadek ciśnienia powietrza ładującego i wzrost opóźnienia wtrysku paliwa wprowadzone łącznie, prowadzą do istotnego obniżenia zawartości tlenków azotu w spalinach silnika okrętowego pracującego na paliwie ciężkim. Badania laboratoryjne przeprowadzono na paliwach ciężkich, a więc w warunkach zbliżonych do rzeczywistych. Ich rezultaty mogą być więc brane pod uwagę przez armatorów. Z uwagi na możliwość wykonania przez załogę statku regulacji silnika pozwalającej na osiągnięcie podobnych rezultatów, metoda sprawdzona w badaniach laboratoryjnych, może być również właściwa w praktyce, szczególnie w odniesieniu do silników wcześniej budowanych, które zazwyczaj nie spełniają normy emisji tlenków azotu wskazanej w załączniku VI Konwencji MARPOL.
Źródło:: Journal of KONES; 2007, 14, 4; 531-536
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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