Performance and Emissions Characteristics of the Butanol-Gasoline Blends in an EFI Gasoline Engine

An EFI gasoline engine without any modification was used as test engine. the power performance, fuel economical and regulated emission characteristics of the gasoline engine fueled with conventional gasoline, pure butanol, 10%, 15%, 20%, 50%, and 85% butanol-gasoline blends in volume were carried out respectively. The tested results shows that engine power, CO and NOx emissions are lower with the ratio of butanol increasing, while the fuel consumptions and THC emissions are higher as the ratio of butanol increases.