Temat: dual-fuel combustion - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Investigations of the working process in a dual-fuel low-emission combustion chamber for an FPSO gas turbine engine
Autorzy:: Serbin, Serhiy
Diasamidze, Badri
Dzida, Marek
Powiązania:: https://bibliotekanauki.pl/articles/1585065.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: gas turbine engine
dual-fuel combustion
combustion chamber
liquid fuel
Opis:: This investigation is devoted to an analysis of the working process in a dual-fuel low-emission combustion chamber for a floating vessel’s gas turbine. The low-emission gas turbine combustion chamber with partial pre-mixing of fuel and air inside the outer and inner radial-axial swirlers was chosen as the object of research. When modelling processes in a dualflow low-emission gas turbine combustion chamber, a generalized method is used, based on the numerical solution of the system of conservation and transport equations for a multi-component chemically reactive turbulent system, taking into consideration nitrogen oxides formation. The Eddy-Dissipation-Concept model, which incorporates Arrhenius chemical kinetics in a turbulent flame, and the Discrete Phase Model describing the interfacial interaction are used in the investigation. The obtained results confirmed the possibility of organizing efficient combustion of distillate liquid fuel in a low-emission gas turbine combustion chamber operating on the principle of partial preliminary formation of a fuel-air mixture. Comparison of four methods of liquid fuel supply to the channels of radial-axial swirlers (centrifugal, axial, combined, and radial) revealed the advantages of the radial supply method, which are manifested in a decrease in the overall temperature field non-uniformity at the outlet and a decrease in nitrogen oxides emissions. The calculated concentrations of nitrogen oxides and carbon monoxide at the flame tube outlet for the radial method of fuel supply are 32 and 9.1 ppm, respectively. The results can be useful for further modification and improvement of the characteristics of dual-fuel gas turbine combustion chambers operating with both gaseous and liquid fuels.
Źródło:: Polish Maritime Research; 2020, 3; 89-99
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Investigations of the emission characteristics of a dual-fuel gas turbine combustion chamber operating simultaneously on liquid and gaseous fuels
Autorzy:: Serbin, Serhiy
Diasamidze, Badri
Gorbov, Viktor
Kowalski, Jerzy
Powiązania:: https://bibliotekanauki.pl/articles/1573591.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: gas turbine engine
dual-fuel combustion
combustion chamber
liquid and gaseous fuels
Opis:: This study is dedicated to investigations of the working process in a dual-fuel low-emission combustion chamber for a floating vessel’s gas turbine. As the object of the research, a low-emission gas turbine combustion chamber with partial premixing of fuel and air inside the outer and inner radial-axial swirls was chosen. The method of the research is based on the numerical solution of the system of differential equations which represent the physical process of mass and energy conservation and transformations and species transport for a multi-component chemically reactive turbulent system, considering nitrogen oxides formation and a discrete ordinates model of radiation. The chemistry kinetics is presented by the 6-step mechanism of combustion. Seven fuel supply operating modes, varying from 100% gaseous fuel to 100% liquid fuel, have been analysed. This analysis has revealed the possibility of the application of computational fluid dynamics for problems of dual-fuel combustion chambers for the design of a floating vessel’s gas turbine. Moreover, the study has shown the possibility of working in different transitional gaseous and liquid fuel supply modes, as they satisfy modern ecological requirements. The dependencies of the averaged temperature, NO, and CO concentrations along the length of the low-emission gas turbine combustion chamber for different cases of fuel supply are presented. Depending on the different operating modes, the calculated emission of nitrogen oxides NO and carbon monoxide CO at the outlet cross-section of a flame tube are different, but, they lie in the ranges of 31‒50 and 23‒24 mg/nm3 on the peak of 100% liquid fuel supply mode. At operating modes where a gaseous fuel supply prevails, nitrogen oxide NO and carbon monoxide CO emissions lie in the ranges of 1.2‒4.0 and 0.04‒18 mg/nm3 respectively.
Źródło:: Polish Maritime Research; 2021, 2; 85-95
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Investigation of the efficiency of a dual-fuel gas turbine combustion chamber with a plasma‒chemical element
Autorzy:: Serbin, Serhiy
Diasamidze, Badri
Dzida, Marek
Chen, Daifen
Powiązania:: https://bibliotekanauki.pl/articles/32921246.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: gas turbine engine
power plant
dual-fuel combustion
combustion chamber
liquid fuel
gaseous fuel
plasma-assisted combustion
Opis:: The study is devoted to the possibility of increasing the efficiency of the working process in dual-fuel combustion chambers of gas turbine engines for FPSO vessels. For the first time, it is proposed to use the advantages of plasma‒chemical intensification of the combustion of hydrocarbon fuels in the dual-fuel combustion chambers, which can simultaneously operate on gaseous and liquid fuels. A design scheme of a combustion chamber with a plasma‒chemical element is proposed. A continuous type mathematical model of a combustion chamber with a plasma‒chemical element has been developed, which is based on the solution of a system of differential equations describing the processes of chemical reactions in a turbulent system, taking into consideration the initiating effect of the products of plasma‒chemical reactions on the processes of flame propagation. A modified six-stage kinetic scheme of hydrocarbon oxidation was used to simultaneously predict the combustion characteristics of the gaseous and liquid fuels, taking into account the decrease in the activation energy of carbon monoxide oxidation reactions when the products of the plasma‒chemical element are added. The results reveal that the addition of plasma‒chemical products significantly reduces CO emissions in the outlet section of the flame tube (from 25‒28 ppm to 3.9‒4.6 ppm), while the emission of nitrogen oxides remains practically unchanged for the studied combustion chamber. Further research directions are proposed to enhance the working process efficiency of a dual-fuel combustion chamber for gas turbine engines as part of the power plant of FSPO vessels.
Źródło:: Polish Maritime Research; 2023, 2; 68-75
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Badania wpływu położenia wtryskiwacza paliwa LPG na sprawność, zawartość składników w spalinach oraz podstawowe parametry procesu spalania w dwupaliwowym silniku spalinowym o zapłonie samoczynnym
Study on the effect of LPG injector position on engine efficiency, exhaust emissions and basic combustion parameters in a dual-fuel compression ignition engine
Autorzy:: Jarzyński, G.
Luft, S.
Różycki, A.
Skrzek, T.
Powiązania:: https://bibliotekanauki.pl/articles/250471.pdf
Data publikacji:: 2015
Wydawca:: Instytut Naukowo-Wydawniczy TTS
Tematy:: spryskiwacz
paliwo LPG
spaliny
spalanie
dwupaliwowy silnik spalinowy
sprinkler
LPG fuel
exhaust
combustion
dual fuel combustion engine
Opis:: W artykule przedstawione są wyniki badań dwupaliwowego silnika spalinowego o zapłonie samoczynnym w zakresie wpływu położenia wtryskiwacza paliwa LPG w kolektorze dolotowym na sprawność, zawartość składników w spalinach oraz podstawowe parametry procesu spalania. W trakcie badań przyjęto trzy różne położenia wtryskiwacza i pomierzono lub też wyliczono wymienione parametry pracy silnika dla różnych udziałów energetycznych stosowanych paliw (inicjującej zapłon dawki oleju napędowego oraz LPG)dla różnych obciążeń silnika. Wyniki zaprezentowane w niniejszym artykule dotyczą jednej stałej wartości prędkości obrotowej n=2000obr/min.
The paper presents results of investigation on a dual-fuel compression ignition engine concerning the effect of LPG injector position in the manifold on efficiency, exhaust emissions and basic combustion pa-rameters. In the course of investigation, three various injector positions were studied. The above mentioned engine operating parameters were measured or calculated for various energy shares of the applied fuels (diesel oil pilot dose and LPG) and for various engine load. The presented results refer to a one constant engine speed n = 2000 rpm.
Źródło:: TTS Technika Transportu Szynowego; 2015, 12; 711-715, CD
1232-3829
2543-5728
Pojawia się w:: TTS Technika Transportu Szynowego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Effect of gas flow on combustion and exhaust emissions in a dual fuel natural gas engine
Autorzy:: Tomita, E.
Kawahara, N.
Ohuchi, S.
Komoda, T.
Sakane, A.
Powiązania:: https://bibliotekanauki.pl/articles/244013.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: alternative fuel
dual fuel combustion system
natural gas
supercharged system
lean burn
gas flow
swirl
tumble
Źródło:: Journal of KONES; 2008, 15, 2; 519-527
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Natural gas engines - problems and challenges
Autorzy:: Kowalewicz, A.
Wojtyniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/243241.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
natural gas
dual-fuel engine
combustion duration
knock
Opis:: At former KONES one of the co-authors presented a paper, is which general information about natural gas properties, reserves, production and distribution were given and application to SI and CI engines was presented, compared and discussed. It was shown, that more promising is dual-fuel CI engine. There is a lot of information on combustion, emissions and performances of dual-fuel natural gas engines, but there are also blank areas and controversial opinions, which were pointed out and discussed in this paper. For example: why combustion processes are delayed in comparison with combustion of diesel fuel only. It is also not clear whether noise of dual-fuel engine is higher than that of diesel engine or lower (there are contradictory data). These problems are shown and discussed in this paper. The proposal of further research is presented. Ignition and combustion in dual-fuel natural gas engines is yet not fully recognized, especially: combustion duration, mechanism at gaseous and condensed phase burning, kinetics and diffusion controlled combustion, noise, knock and cycle-by-cycle variation. Optimization of control parameters on account of efficiency and emissions is still an open problem. Influence of natural gas composition and its changes on engine performance and emissions still demand estimation.
Źródło:: Journal of KONES; 2007, 14, 2; 273-282
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Choice of a pilot dose in dual fuel self-ignition engine of a generator, depending on its load
Autorzy:: Imiołek, M.
Piętak, A.
Śmieja, M.
Wierzbicki, S.
Powiązania:: https://bibliotekanauki.pl/articles/247241.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
gas engine
dual fuel powering
CNG
Opis:: One of the basic problems concerning dual fuel powering of self-ignition engines is to determine the minimal dose of diesel oil injected into the combustion chamber in order to trigger self-ignition. Most research conducted to date on double-fuel powering self-ignition has been carried out on engines with mechanical injection systems, which does not ensure the possibility of obtaining very small diesel oil doses initiating self-ignition. The original system of fuelling the engine with diesel oil was replaced with a laboratory Common Rail system. The basic parameters of injector operation were controlled by a specially-developed system ensuring continuous choice of parameters of injector operation. The examined engine was fitted with a prototypical system of methane-air fuelling and a system for controlling and adjusting the supplied dose of methane This study presents the results of research aiming at determining the pilot dose injected into the combustion chamber of the engine to ensure the course of combustion in the engine operating under various loads. The results presented in the paper concern tests of a single-cylinder self-ignition engine, HATZ 1B40, operating in a generator adopted for CNG fuelling.
Źródło:: Journal of KONES; 2011, 18, 4; 129-136
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Research on the effect of diesel fuel injection parameters on the combustion process in the turbocharged CI engine operating on propane
Autorzy:: Skrzek, T.
Powiązania:: https://bibliotekanauki.pl/articles/243309.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engines
dual fuel
propane
control of injection parameters
Opis:: Results presented in the article regard the research on a turbocharged dual-fuel CI engine operating on propane. The research indicated that such engine might operate even if 70% of the standard fuel energy is replaced by propane. The research indicated that at such high share of the gaseous fuel, there is necessary to adjust diesel fuel injection parameters but it is important that there is no need to change the engine structure. Injection parameters may be adjusted in a wide range due to the modern fuelling system of the common rail type. The investigated engine was equipped with such system. Adjustments regarding the fuel charge division, fuel charge quantities, and injection timing enabled to influence combustion in such way to obtain its specific parameters, i.e. maximum combustion pressure, rate of pressure rise, maximum pressure, and the burn out ratio similar to those obtained for diesel fuel operation. The obtained results were presented in form of adjustment characteristics of the injection timing of diesel fuel pilot dose for a few chosen values of the boost pressure as well as injection timing of the main dose. The investigations were carried out for three values of the boost pressure, i.e. 200; 400 and 600 [mbar] but also for the naturally aspirated version. Injection timing of the first dose varied in a broad range and depended on the boost pressure. Injection timing of the second dose varied in a narrower range, mainly due to considerable changes in the combustion process. The obtained results answered a number of questions regarding the strategy of selection of diesel fuel injection parameters taking into consideration engine performances as well as combustion at a high share of the gaseous fuel.
Źródło:: Journal of KONES; 2018, 25, 3; 419-429
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Experimental Investigation on Indicated Pressure and Heat Release for Direct Hydrogen Injection in a Dual Fuel Diesel Engine
Autorzy:: Siadkowska, Ksenia
Barański, Grzegorz
Sochaczewski, Rafał
Wendeker, Mirosław
Powiązania:: https://bibliotekanauki.pl/articles/2201773.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: diesel engine
direct hydrogen injection
dual fuel
combustion engine
Opis:: This paper presents the research results for a diesel and hydrogen fueled engine. The research object is a four-cylinder, four-stroke ADCR engine with a displacement of 2,636 cm3. In the experiments, glow plugs were replaced with compressed hydrogen injectors and a special adapter. Hydrogen was supplied directly into a combustion chamber using a test injector. A hydrogen dose in the tests was changed at selected test points and ranged from 0 to 160 dm3/min. The research were conducted at 1,500 rpm. A hydrogen injection start angle and maximum hydrogen dose were specified from the preliminary experiments. The following parameters were analyzed: indicated mean effective pressure, maximum pressure, crank angle of maximum cylinder pressure occurrence and heat release. The obtained results were statistically analyzed. The conducted analysis focused on determining whether there are significant differences between early and late injection and how these changes affect the measured parameters.
Źródło:: Advances in Science and Technology. Research Journal; 2022, 16, 3; 54--66
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Some aspects of dual fueling of the middle class modern CI engines
Autorzy:: Stelmasiak, Z.
Powiązania:: https://bibliotekanauki.pl/articles/242729.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dual fuel
natural gas
gas injection
common rail
combustion process
Opis:: The paper presents results of studies on the dual fuel engine equipped with the Common Rail high pressure injection system and low pressure natural gas injection into the inlet collector. Impact of some regulation parameters of the feed system on the engine performance parameters was examined. Research of the pilot dose selection showed that the minimal size of the dose was limited to ca 12+13% of the nominal dose. It is a result of some troubles of the electromagnetic injector operation at short times of control. The effect of that is a notable deterioration of smoothness of the engine operation. However, electronic control of the injector opening timing enables to reduce the pilot dose size as the engine load is reduced. The research showed advantageous impact of the decreasing dose on the engine efficiency and exhaust gas toxicity at partial loads of the engine. The tests reconfirmed full usefulness of the system to combustion process optimization. A delay of the injection start at high engine loads enables to reduce nearly twice the NOx concentration in exhaust gas with insignificant decreasing, some 1+1.5%, of its efficiency. The used systems showed their high suitability to control charge quality in dual fuel engines, in traction applications in particular.
Źródło:: Journal of KONES; 2007, 14, 4; 453-462
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Badania wpływu parametrów wtrysku oleju napędowego na emisję cząstek stałych w dwupaliwowym doładowanym silniku zasilanym gazem naturalnym
Research on the impact of diesel injection parameters on particulate matters emission in a dual-fuel supercharged engine fueled with natural gas
Autorzy:: Skrzek, T.
Jarzyński, G.
Powiązania:: https://bibliotekanauki.pl/articles/316253.pdf
Data publikacji:: 2018
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: silnik dwupaliwowy
gaz naturalny
spalanie
dual fuel engine
natural gas
combustion
Opis:: W artykule zaprezentowane zostały wyniki badań dwupaliwowego, doładowanego silnika o zapłonie samoczynnym, zasilanego gazem naturalnym. Celem głównym prowadzonych badań było określenie wpływu parametrów wtrysku inicjującej zapłon dawki oleju napędowego tj.: wielkość oraz kąt początku wtrysku na emisję cząstek stałych. Badania wykazały, że przy stosowaniu podziału dawki oleju napędowego na dawkę pilotującą i główną, pomimo znaczącego (70%) udziału energetycznego paliwa gazowego w spalanej mieszaninie emisja cząstek stałych jest porównywalna a nawet większa od tej uzyskanej na paliwie standardowym. Wcześniejsze badania silnika dwupaliwowego wykazały, że istnieje wyraźna potrzeba stosowania podziału dawki oleju napędowego na dawkę pilotującą i dawkę główną. Podział ten w istotny sposób wpływa na przebieg wywiązywania się ciepła a zarazem stanowi skuteczną metodę redukcji maksymalnej szybkości narastania ciśnienia spalania, co pozwala na zwiększania udziału paliwa dodatkowego. Z punku widzenia emisji cząstek stałych podział taki nie jest korzystny. Uzyskane wyniki badań wskazują, że wielkości dawek pilotującej i głównej oraz ich kąt początku wtrysku w istotny sposób wpływają na warunki tworzenia się cząstek stałych.
The paper presents the results of research on dual-fuel, compression ignition engine, powered by natural gas. The main objective of the conducted research was to determine the impact of injection parameters initiating the ignition of a diesel oil dose, i.e.: the size and injection timing, on the emission of particulate matters. Studies have shown that when using a split of the diesel dose for the pilot and main dose, despite the significant (70%) share of natural gas in the mixture being combusted, the emission of particulate matters is comparable and even higher than that obtained on standard fuel. Previous studies of the dual-fuel engine showed that there is a clear need to divide the diesel dose into a pilot dose and the main dose. This division significantly affects the course of heat release, and at the same time is an effective method of reducing the maximum rate pressure rise, which allows increasing the share of gaseous fuel. From the point of view of particulate emissions, such division is counterproductive. The obtained results indicate that the values of pilot and main doses and their injection timing significantly affect the conditions of formation of particulate matters.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 12; 233-237
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The impact of the share of CNG on the combustion process in a dual-fuel compression-ignition engine with the common rail system
Autorzy:: Wierzbicki, S.
Śmieja, M.
Mikulski, M.
Powiązania:: https://bibliotekanauki.pl/articles/242699.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: natural gas
dual-fuel compression-ignition engine
Common Rail system
combustion process
Opis:: The struggle against global warming necessitates the search for new sources of energy, which limit the emission of carbon dioxide into the atmosphere. Among various fuels used to supply energy nowadays, the importance of natural gas is constantly growing. This is caused by the fact that this fuel is characterised by the lowest share of coal among all fossil fuels. Because of its properties, natural gas can be used directly to power spark-ignition engines. The use of this fuel for compression-ignition engines on the other hand is limited due to the high autoignition temperature of methane. Currently, research is being conducted in numerous centres on the possibility of using fuel gases to power CI engines operating in a dual-fuel system. The present article discusses the impact of the share of CNG in the supply dose on the operation of a CI engine. An engine with the Common Rail injection system programmed for mono-fuel operation was used in the research. Based on the conducted tests it has been proved that supplying this type of engine with fuel gas considerably changes the course of the combustion process, which is caused by the fact that the gas and air mixture present in the combustion chamber starts burning now of the autoignition of the first portion of liquid fuel. The obtained test results confirm the necessity to change the injection parameters of the pilot dose of diesel fuel (the timing angle of injection and the pressure of fuel) in cases when this type of engine operates in a dual-fuel system.
Źródło:: Journal of KONES; 2016, 23, 2; 415-422
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Wpływ ciśnienia wtrysku oleju napędowego na parametry pracy i przebieg procesu spalania w dwupaliwowym silniku zasilanym propanem
Effect of diesel oil injection pressure on operating parameters and combustion in a dual-fuel engine operating on propane
Autorzy:: Skrzek, T.
Powiązania:: https://bibliotekanauki.pl/articles/251895.pdf
Data publikacji:: 2015
Wydawca:: Instytut Naukowo-Wydawniczy TTS
Tematy:: olej napędowy
spalanie
silnik dwupaliwowy
propan
diesel
combustion
dual fuel engine
propane
Opis:: W artykule zaprezentowano i omówiono wyniki badań wpływu zmian ciśnienia wtrysku oleju napędowego na osiągi, emisję składników toksycznych spalin oraz przebieg procesu spalania w dwupaliwowym silniku zasilanym odparowany propanem. Badania przeprowadzono na jednocylindrowym badawczym silniku o zapłonie samoczynnym firmy AVL. Zastosowany wysokociśnieniowy, zasobnikowy układ wtryskowy oleju napędowego pozwolił na dostosowanie parametrów wtrysku do zasilania dwupaliwowego i pracę silnika ze znacznym 65% udziałem energetycznym paliwa gazowego przy jednoczesnym doładowaniu. W badaniach mimo zmian ciśnienia wtrysku, wielkość dawki oleju napędowego była stała. Również współczynnik nadmiaru powietrza dla wszystkich przeprowadzonych prób był stały i wynosił 1.25 co odpowiadało pełnemu obciążeniu badanego silnik. Badania wykazały zarówno wyraźny wpływ zmiany ciśnienia wtrysku oleju napędowego na szereg parametrów badanego silnika, jak i konieczność zmiany parametrów wtrysku w przypadku stosowania różnych udziałów obu paliw.
The paper presents and discusses results of investigation on the effect of diesel oil injection pressure on engine performances, toxic exhaust emissions and combustion in a dual-fuel engine operating on evaporated propane. The investigation was carried out on a test stand with a single-cylinder AVL compression ignition engine. The applied high-pressure storage diesel oil injection system anabled to adjust injection parameters for dual-fuel operation mode and engine operation with 65% energy share of the gaseous fuel and with super-charging. Although the injestion pressure varied, the diesel oil charge was constant. Also the air excess coefficient was constant during the whole investigation and equal to 1.25 what corresponds to the full engine load. The investigation revealed clear effect of diesel oil injection pressure on many engine parameters as well as the necessity to adjust injection parameters in case of various proportions of both investigated fuels.
Źródło:: TTS Technika Transportu Szynowego; 2015, 12; 1380-1384, CD
1232-3829
2543-5728
Pojawia się w:: TTS Technika Transportu Szynowego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Zewnętrzna charakterystyka prędkościowa silnika Perkins 1104d-E44TA zasilanego dwupaliwowo olejem napędowym i gazem ziemnym
External speed characteristics of Perkins 1104D-E44TA : a dual-fuel engine propelled with gas oil and natural gas
Autorzy:: Kurczyński, D
Łagowski, P.
Warianek, M.
Powiązania:: https://bibliotekanauki.pl/articles/312794.pdf
Data publikacji:: 2017
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: eksploatacja silnika
silniki spalinowe
zasilanie dwupaliwowe
engine operation
combustion engines
dual-fuel engine
Opis:: Gaz ziemny jako paliwo do zasilania tłokowych silników spalinowych stanowi ciekawą alternatywę dla benzyn i olejów napędowych. Jest źródłem energii, która jest promowana przez Unię Europejską, w celu zwiększenia jej udziału w transporcie. Dostępne są technologie, które pozwalają na stosowanie gazu ziemnego do zasilania silników o zapłonie wymuszonym, jak również silników o zapłonie samoczynnym. W artykule przedstawiono wybrane wyniki badań silnika o zapłonie samoczynnym Perkins 1104D-E44TA, który został przystosowany na hamowni silnikowej do zasilania dwupaliwowego sprężonym gazem ziemnym i olejem napędowym. Podczas badań silnik pracował według zewnętrznej charakterystyki prędkościowej. Wyznaczone wybrane wskaźniki pracy silnika Perkins 1104D-E44TA przy jego zasilaniu dwupaliwowym, jednocześnie gazem ziemnym i olejem napędowym, porównano z wskaźnikami otrzymanymi przy zasilaniu silnika tylko olejem napędowym. Uzyskano nieznaczne zmniejszenie mocy efektywnej i momentu obrotowego silnika przy jego zasilaniu dwupaliwowym. Poza tym zasilając silnik dwupaliwowo uzyskano zwiększenie godzinowego zużycia paliwa, jednostkowego zużycia paliwa i godzinowego zużycia energii, w porównaniu do jego zasilania olejem napędowym.
Natural gas used as a fuel for piston combustion engines is a noteworthy alternative to petrol and gas oil. This source of energy is promoted by the European Union in order to make it more prevalent in transport. There are available technologies which make it possible to use natural gas for powering positive-ignition and compression ignition engines. The article presents test results for the Perkins 1104D-E44TA compression ignition engine, which was adjusted for dual-fuel compressed natural gas and Diesel fuel feed. During the test, the engine was working according to an external speed characteristics. The motor action indicators of the Perkins 1104D-E44TA, powered with both natural gas and Diesel fuel, were compared with the indicators when the engine was propelled only with Diesel fuel. The result was that the brake horsepower and the torque were slightly decreased when the engine was being bi-fuelled. Furthermore, when compared to running on Diesel fuel only, the engine propelled with both types of fuel increased fuel consumption per hour, specific fuel consumption and energy consumption per hour.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 12; 1012-1018, CD
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Effects of using a dual-injector fuel system on a process of combustion in a spark-ignition engine
Autorzy:: Sendyka, B.
Noga, M.
Powiązania:: https://bibliotekanauki.pl/articles/246083.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dual-injector fuel system
gasoline
direct injection
port injection
combustion
spark-ignition engine
Opis:: This paper analyzes aprocess of combustion in a spark-ignition engine. The aim of the analysis was to determine the differences in the combustion process between the engine with a classic multipoint injection system and a system which injects fuel directly to the cylinders as well. To aid in the analysis the measurements of the high variable pressure in the engine's cylinder against the crankshaft angle were taken. This allowed us to obtain indicated diagrams for both types of engines. To eliminate distortions, both functions were approximated using combined functions. The other basic parameters were also measured: torque, RPM and instantaneous fuel consumption. The analysis of the indicated diagrams yielded an indicated mean pressure and thermal efficiency for both fuel systems. Then, a comprehensive analysis ofpressures in cylinders was performed in order to determine the way the flame spreads in the cylinder for the two types of engines. The results obtained from this analysis show that the speed of combustion is greater for the charge formed by the dual-injector fuel system. The increased speed of the combustion, especially when it reaches a 50% fraction of the exhaust gas in the cylinder, is what accounts for the increase in the indicated mean pressure and the increase in the thermal efficiency of the engine with a dual-injector fuel system. The time of the spreading of the flame, as well as the fast burn period were reduced. The increased efficiency of the combustion process in the cylinder me ans that the heat losses through the cylinder sleeve are greatly reduced. The results of the research in this paper confirm the purposefulness of using a dual-injector fuel system in a spark-ignition engine.
Źródło:: Journal of KONES; 2010, 17, 1; 389-397
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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