Experimental determination of suitable ethanol–gasoline blend rate at high compression ratio for gasoline engine

Ethanol produced from biomass has high octane number and gives lower emissions. Therefore, it is used as alternative fuel in the gasoline engines. In this study, ethanol was used as fuel at high compression ratio to improve performance and to reduce emissions in a small gasoline engine with low efficiency. Initially, the engine whose compression ratio was 6/1 was tested with gasoline, E25 (75% gasoline + 25% ethanol), E50, E75 and E100 fuels at...