Performance Study of Ethanol Blended Gasoline Fuel in Spark Ignition Engine

Abstract

Growing energy needs and environmental concern worldwide have propelled the interest for quest and utilization of renewable and eco friendly fuels .Various substitutes are available to be used engines with the possibility of reducing harmful emissions. In this work gasoline is taken as reference which is blended with ethanol. Physical properties relevant to the fuel were determined for the four blends of gasoline and ethanol. A four cylinder, four stroke, varying rpm, Petrol engine connected to eddy current type dynamometer was run on blends containing 5%,10%,15%,20% ethanol and performance characteristics were evaluated. In this paper it is shown that the higher blends can replace gasoline in a SI engine, results showed that there is a reduction in exhaust gases and increase in Mechanical efficiency, Specific Fuel Consumption and air fuel ratio on blending. We can conclude from the result that using 10% ethanol blend is most effective and we can utilize it for further use in SI engines with little constraint on material used to sustain little increase in pressure.