Performance evaluation of 4-stroke gasoline engine using Bio fuel (Ethanol)

The article examines the performance of a 4-stroke gasoline engine using Bio-fuel (Ethanol). The research work was carried out on a SOLTEQ engine test bed available in university in Thermodynamics laboratory. In this study an ordinary gasoline engine was fixed on test bed. Several modifications to external parts of the engine were made to fix it on the bed such as base frame, suction port, exhaust port and oil temperature indicators. To asses engine performance the experiment setting used gasoline with 5 different blends of ethanol such as E0 (100% gasoline), E5 (95% gasoline, 5% ethanol), E10 (90% gasoline, 10% ethanol), E15 (85% gasoline, 15% ethanol) and E20 (80% gasoline, 20% ethanol). While the engine performance was evaluated at operating parameter called wide open throttle (WOT). Different charts were established to compare results. The results obtained from analysis showed significant deviations in performance curves at different fuel grades. These results were quite useful especially for utilizing ethanol additives with gasoline in ordinary gasoline engines. (paper)