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The impact of fuel injection pressure on the exhaust emissions of a direct injection diesel engine fueled with biodiesel–diesel fuel blends

► The influence of injection pressure on the emission characteristics of a diesel engine using biodiesel–diesel fuel blends. ► The effect of biodiesel–diesel fuel blends on the performance parameters in terms of brake specific fuel consumption. ► The possibility of using biodiesel–diesel fuel blends...

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Bibliographic Details
Published in:Fuel (Guildford) 2012-05, Vol.95, p.486-494
Main Authors: Gumus, Metin, Sayin, Cenk, Canakci, Mustafa
Format: Article
Language:English
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Summary:► The influence of injection pressure on the emission characteristics of a diesel engine using biodiesel–diesel fuel blends. ► The effect of biodiesel–diesel fuel blends on the performance parameters in terms of brake specific fuel consumption. ► The possibility of using biodiesel–diesel fuel blends at different injection pressures. In this study, the effects of fuel injection pressure on the exhaust emissions and brake specific fuel consumption (BSFC) of a direct injection (DI) diesel engine have been discussed. The engine was fueled with biodiesel–diesel blends when running the engine at four different fuel injection pressures (18, 20, 22, and 24MPa) and four different engine loads in terms of mean effective pressure (12.5, 25, 37.5, and 50kPa). The results confirmed that the BSFC, carbon dioxide (CO2), nitrogen oxides (NOx) and oxygen (O2) emission increased, smoke opacity, unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions decreased due to the fuel properties and combustion characteristics of biodiesel. On the other hand, the increased injection pressure caused to decrease in BSFC of high percentage biodiesel–diesel blends (such as B20, B50, and B100), smoke opacity, the emissions of CO, UHC and increased the emissions of CO2, O2 and NOx. The increased or decreased injection pressure caused to increase in BSFC values compared to original (ORG) injection pressure for diesel fuel and low percentage biodiesel–diesel blends (B5).
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2011.11.020