Effect of biofuel on performance and emissions of diesel engine
2021
Mickevicius, T., Vytautas Magnus Univ., Kaunas (Lithuania) | Slavinskas, S., Vytautas Magnus Univ., Kaunas (Lithuania)
The paper presents a comparative analysis of the diesel engine performance and emission characteristics, when operating on diesel fuel (D) rapeseed methyl ester (B) and rapeseed methyl ester-butanol BBu20 blend, at various loads and 2000 rpm engine speeds. The experimental tests were performed at a four-stroke, single-cylinder, air-cooled diesel engine FL511. The bench test results showed that the brake specific fuel consumption increased, when operating on biodiesel-butanol fuel blends compared to neat diesel fuel. The maximum brake thermal efficiency sustained at 4.7% lower in comparison with diesel fuel operating at full engine load. When the engine was running at maximum torque mode using biodiesel-butanol fuel blend BBu20, the total emissions of nitrogen oxides decreased. Thus, the greatest fossil fuel challenge related with the simultaneous reduction of both the NOx emissions and the smoke opacity (PM) could be reasonably solved by switching a diesel engine on totally renewable biodiesel-n-butanol biofuel blend.
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