Assessment Study of Butanol-Gasoline Blends in Variable Compression Ratio Spark Ignition Engine

In comparison to the other alcohols, the most attractive alternate for gasoline is butanol. Butanol is better in comparison to other alcohol because it has very promising physical and chemical properties which are favorable for its blending with gasoline. When blending of butanol and gasoline is done then butanol is perfectly miscible in every proportion. The moisture in the atmosphere is not absorbed by the butanol as it is hygroscopic in nature. The experiments and data analysis were conducted over 5%, 10%, and 15% butanol and gasoline blends for assessing their performance parameters in a Variable Compression Ratio SI Engine. The APEX Variable Compression Ratio multi-fuel engine was selected for experiments. The performance of the fuel and engine was evaluated by comparing the parameters like Brake Specific Fuel Consumption, Brake Thermal Efficiency and Exhaust Gas Temperature of gasoline-butanol blend with gasoline as bench mark fuel. The complete analysis of butanol-gasoline blends reveals the similar characteristics as gasoline.