Selection of blends of ethanol with petrol for SI engine using TOPSIS and VIKOR methods

Abstract

Abstract India and other agricultural countries grow large quantities of sugar cane and ethanol is a by-product of the sugarcane industry. The blending of ethanol with petrol can save tremendous amount of petrol. In the present study, experiment was carried on the SI engine by means of various blends of ethanol with petrol such as E5, E8, E10 and E12, and the various engine performance variables were recorded such as brake thermal efficiency, volumetric efficiency, air-to-fuel ratio and exhaust heat. The two selected multi attribute decision making methods viz: technique for order preference by similar to ideal solution and compromise ranking method have been utilized in determining the rank of blends. It has been seen from the ranks obtained using both the methods that the blend E10 is the best alternative with petrol, E5 is the second best where as E8 and E12 are third and fourth best alternative respectively.