EXPERIMENTAL INVESTIGATION ON VARYING THE COMPRESSION RATIO OF SI ENGINE WORKING UNDER DIFFERENT ETHANOL-GASOLINE FUEL BLENDS

Abstract

Using different ethanol–gasoline fuel blends, a VARICOMP engine was used to study the effect of varying the compression ratio on SI engine performance. The performance tests were carried out using different percentages of ethanol in gasoline fuel, up to 40%, under variable compression ratio conditions. The results show that the engine indicated power improves with the percentage addition of the ethanol in the fuel blend. The maximum improvement occurs at 10% ethanol–90% gasoline fuel blend. © 1997 by John Wiley & Sons, Ltd.