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Wyszukujesz frazę "fuel blend" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
An influence of correction of the ignition advance angle on the combustion process in SI engine fuelled by lpg with the addition of DME
Autorzy:
Kubica, Grzegorz
Marzec, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/243249.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
dimethyl ether
DME+LPG
fuel blend
SI engine
Opis:
The paper presents the results of tests of the SI engine fuelled by LPG with the addition of DME in the form of a mixture of gaseous fuels. Experimental tests were carried out on a chassis dynamometer in the full range of engine loads, at a fixed rotational speed: 2000, 2500 and 3000 rpm. The use of dimethyl ether (DME) as a fuel component makes it possible to exploit its important advantages. DME can be produced as a renewable fuel, which is important from the point of view of ecology. Another important fact is the presence of oxygen in this fuel, which has a positive effect on the engine volumetric efficiency. During the tests, the ignition timing was also adjusted due to the very good DME flammability. Two additional correction levels were applied, increasing the ignition advance by 3 and 6 CA degrees, compared to the factory settings of the driver. The analysis of the obtained results allowed determining the dependence of the basic engine parameters, in the function of the correction of ignition advance angle. In the summary, attention was also paid to the possibility of determining corrected maps of the ignition advance angle taking into account the variable proportions of fuel components.
Źródło:
Journal of KONES; 2019, 26, 4; 285-292
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of emission reduction by using alcohol blend fuel for small diesel engine
Autorzy:
Kawakami, T.
Powiązania:
https://bibliotekanauki.pl/articles/244564.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
low emission
small diesel engine
alcohol blend fuel
Opis:
In practical diesel engines it is to achieve a low emission and low fuel consumption under from low to high load operation conditions. Several techniques were developed for the low emission and high efficiency, such as Homogeneous Charge Compression-Ignition Engines and the blend fuels. Nevertheless, there are only few data available for reducing the emissions and fuel consumption of small diesel engines by using blend fuels. This experiment has been carried out to examine the influence of alcohol blend fuels on combustion characteristics for small diesel engine. The fuels used in this study are light oil (Standard), ethanol, propanol and butanol. The combustion behaviours, such as the emissions in exhaust gas (NOX, CO, CO2, O2 concentration), fuel consumption rate are observed. The main conclusions are as follows: 1) it is possible to control the combustion behaviour by using alcohol blend fuels for small diesel engine, 2) the fuel consumption of at any alcohol blend fuels is bigger than that of light oil, 3) the net thermal efficiency of some alcohol blend fuels (E5P5, P5B5, E5B5) slightly increases than that of light oil, 4) the NOx emissions for all the alcohol blend fuels are smaller than that of light oil, 5) the CO emissions are remarkably bigger than that of light oil under from low to middle engine load without the ethanol 10% addition.
Źródło:
Journal of KONES; 2014, 21, 1; 125-130
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of knock suppression characteristics in a boosted methane : gasoline blended fuelled SI engine
Autorzy:
Yang, Z.
Miganakallu, N.
Rao, S.
Harsulkar, J.
Naber, J.
Lonari, Y.
Szwaja, S.
Powiązania:
https://bibliotekanauki.pl/articles/244629.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
knock
methane
gasoline
E10
blend fuel
knock onset prediction
simulation
Opis:
Natural gas has a higher knock suppression effect than gasoline which makes it possible to operate at higher compression ratio and higher loads resulting in increased thermal efficiency in a spark ignition engine However, using port fuel injected natural gas instead of gasoline reduces the volumetric efficiency from the standpoints of the charge displacement of the gaseous fuel and the charge cooling that occurs from liquid fuels. This article investigates the combustion and engine performance characteristics by utilizing experimental and simulation methods varying the natural gas-gasoline blending ratio at constant engine speed, load, and knock level. The experimental tests were conducted on a single cylinder prototype spark ignited engine equipped with two fuel systems: (i) a Direct Injection system for gasoline and (ii) a Port Fuel Injection (PFI) system for compressed natural gas. For the fuels, gasoline with 10% ethanol by volume (commercially known as E10) with a research octane number of 91.7 is used for gasoline via the DI system, while methane is injected through PFI system. The knock suppression tests were conducted at 1500 rpm, 12 bar net indicated mean effective pressure wherein the engine was boosted using compressed air. At 60% of blending methane with E10 gasoline, the results show high knock suppression. The net indicated specific fuel consumption is 7% lower, but the volumetric efficiency is 7% lower compared to E10 gasoline only condition. A knock prediction model was calibrated in the 1-D simulation software GT-Power by Gamma Technologies. The calibration was conducted by correlating the simulated engine knock onset with the experimental results. The simulation results show its capability to predict knock onset at various fuel blending ratios.
Źródło:
Journal of KONES; 2018, 25, 3; 517-525
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An influence of methane/hydrogen proportion in fuel blend on efficiency of conversion energy in SI engine
Autorzy:
Flekiewicz, M.
Kubica, G.
Powiązania:
https://bibliotekanauki.pl/articles/246510.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
methane/hydrogen blend
low-carbon fuel
total efficiency
SI engine
Opis:
The relations between methane/hydrogen proportions in fuel blend are presented in this paper. The research cycle carried out contains results of dynamometer chassis tests complemented with mathematical model calculations. An object of X16SZR engine installed in Opel Astra I was investigation. The engine has been equipped with additional CNG feeding system where fuel is being injected into intake manifold under low pressure. 8 fuel blends were tested with variable methane/hydrogen volume proportion (%): 100/0, 95/5, 90/10, 85/15, 80/20, 70/30, 60/40 and 50/50. The feeding and ignition systems were controlled by nominal drivers. In every measuring series engine was tested in the following steady states: on idle, high speed without load and full power at discrete variable speed in range 1500…3500 rpm. The main aspect of the analysis was to identify the influence of hydrogen share on engine parameters such power, fuel consumption, in-cylinder pressure, temperature and exhaust gas composition. Very significant ecological fact possibility of CO2 emission reduction has been identified. Result of increasing content of hydrogen in fuel mixture is engine knocking. Analysis carried out on the basis of results allowed it to the point on methane/hydrogen proportion in fuel blend considering a total efficiency, emission and heat flux in parts of combustion chamber in engine.
Źródło:
Journal of KONES; 2012, 19, 3; 117-124
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Property determination for ethanol-gasoline blends with application to mass fraction burn analysis in a spark ignition engine
Autorzy:
Yeliana, Yeliana
Worm, J.
Michalek, D.
Naber, J.
Powiązania:
https://bibliotekanauki.pl/articles/950185.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ethanol-gasoline blend
mass fraction burn
heat release
IC engine
fuel-air mixture properties
Opis:
The Mass Fraction Burn (MFB) and Heat Release Rate (HRR) reflects the amount of fuel burned, and the rate of burning throughout the combustion process in an internal combustion engine. These parameters play a crucial role in research and development endeavors focused on engine efficiency, emissions, and overall operating performance. They are computed by analyzing measured pressure data and applying thermodynamic principals to determine the energy released during the combustion process. Thus, the properties of the fuel-air and combusted gas mixtures play an important role in the analysis. Engine pressure data were taken from a Spark-Ignition Cooperative Fuels Research (CFR) engine operating at a constant load of 330 kPa Net Indicated Mean Effective Pressure (Net IMEP) and using five ethanol-gasoline fuel blends: E0 (gasoline), E20, E40, E60, and E84. The fuels were assumed to be in a non-reacting state throughout the mixing process. Once the fuel mixture properties were known, the fuel-air and burned mixture properties were determined using the fuel-air mass ratio. The analysis presented within this paper details the process by which the fuel, fuel-air, and burned mixture properties can be determined. The MFB of five different fuel blends at a chosen operating condition was also presented along with the pressure trace, the temperature and the gamma profile at the end of this paper.
Źródło:
Journal of KONES; 2008, 15, 2; 553-561
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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