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Wyświetlanie 1-3 z 3
Tytuł:
Effect of biodiesel on the development of split injection characteristics
Autorzy:
Slavinskas, Stasys
Labeckas, Gvidonas
Mickevičius, Tomas
Powiązania:
https://bibliotekanauki.pl/articles/133371.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
split injection
injection rate
common rail injection system
diesel fuel
biodiesel fuel
wtrysk dzielony
dawka wtrysku
układ wtryskowy Common Rail
olej napędowy
biodiesel
Opis:
The paper presents the experimental test results of a common rail injection system operating with biodiesel and the diesel fuel. The three fuel split injection strategies were implemented to investigate the effects made by biodiesel and a fossil diesel fuel on the history of injector inlet pressure and the injection rate. In addition, the three intervals between split injections and the different injection pressures were used to obtain more information about the studied subjects. The obtained results showed that the peak mass injection rates of the main injection phase were slightly higher when using biodiesel than the respective values measured with the normal diesel fuel. Because the first injection phase activated the fuel pressure fluctuations along the high-pressure line and in front of the injector, the time-span between injections has an impact on the injector inlet pressure and thus the fuel injection rate during the second injection phase. Since the nozzle closes little later for biodiesel, the injector inlet pressure also occurred latter in the cycle.
Źródło:
Combustion Engines; 2019, 58, 2; 103-107
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental investigation biodiesel-n-butanol fuels blends on performance and emissions in the diesel engine
Autorzy:
Labeckas, Gvidonas
Slavinskas, Stasys
Mickevičius, Tomas
Powiązania:
https://bibliotekanauki.pl/articles/2097621.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
biodiesel
n-butanol
lubricity
brake specific fuel consumption
engine efficiency
emissions
smoke opacity
silnik diesla
smarność
jednostkowe zużycie paliwa przez hamulce
sprawność silnika
emisje
zadymienie spalin
Opis:
The paper presents the experimental test results reflecting the comparative changes in the performance efficiency and emissions of the exhaust of a naturally aspirated, four-stroke, single-cylinder, air-cooled diesel engine due to its transition from neat rapeseed oil biodiesel to fuel blends prepared by mixing in various proportion (by volume) rapeseed methyl ester (B) and butanol (Bu). The lubricity properties of biodiesel-n-butanol fuel blends were studied using HFRR method. In contrast to previous works, the undertaken investigation is performed with a totally renewable, binary liquid biofuel blends. The purpose of the research is to reduce simultaneously the production of NOx emissions and the exhaust smoke with respect to neat biodiesel due to potentially improved homogeneity of combustible mixture and particulate matter emissions benefits suggested by the higher oxygen content (21.62 wt%) and the relatively lower carbon-to-hydrogen ratio (4.8) of the normal n-butanol. The tests revealed that the brake specific fuel consumption for the binary biodiesel-n-butanol fuel blends is always higher than that neat biodiesel produces under the same loading conditions. Maximum nitrogen oxide (NOx) emissions were obtained with the engine running on neat biodiesel (2290 ppm). At full (100%) load conditions, the lowest NOx emission was obtained with the engine running on a biofuel BBu20 blend. The lowest level of carbon monoxide emissions (CO) was observed, when engine running with the most butanol-oxygenated biofuel blend BBu20.The highest smoke opacity of the exhaust was obtained when the engine was fuelled with neat biodiesel and at full load.
Źródło:
Combustion Engines; 2022, 61, 1; 90--95
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tribological study of high-pressure fuel pump operating with ethanol-diesel fuel blends
Autorzy:
Labeckas, Gvidonas
Slavinskas, Stasys
Mickevicius, Tomas
Kreivaitis, Raimondas
Powiązania:
https://bibliotekanauki.pl/articles/134053.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel fuel
ethanol-diesel fuel blends
lubricity
four ball test rig
plunger-barrel units
wear scar diameter
olej napędowy
mieszanina oleju napędowego i etanolu
smarność
aparat czterokulowy
układ tłok-tuleja
średnica śladu zużycia
Opis:
This paper presents comparative experimental study’s results of ethanol-diesel fuel blends made effects on operational properties of a high-pressure fuel pump of a common rail injection system. The two identical fuel injection systems mounted on a test bed of the fuel injection pumps were prepared for the experimental durability tests. The lubricity properties of ethanol-diesel fuel blends E10 and E20 blends were studied using a four-ball tribometer. The test results showed that long-term (about 100 hours) using of ethanol-diesel blends produced a negative effect on the durability of the high-pressure fuel pump. Due to the wear of plunger-barrel units the decrease in the fuel delivery rate occurred of about 39% after the 100 h of continuous operation with ethanol-diesel fuel blends. The average friction coefficients of ethanol-diesel fuel blend E10 was lower than that of the normal diesel fuel. After the 100 hours of operation with ethanoldiesel fuel blend E10, the measured wear scar diameter was 10% higher than that of a fossil diesel fuel.
Źródło:
Combustion Engines; 2019, 58, 2; 132-135
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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