The Study on the Estimate of Fuel Adaptation to SI Engine Performance with E85 Ethanol-gasoline Fuel

• Main Authors: Jui-Pin Lin, 林瑞彬
• Other Authors: 鐘證達
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/7a98ng

碩士 === 國立虎尾科技大學 === 機械與機電工程研究所 === 97 === This research uses E85 ethanol fuel on a four cyclinders SI engine controlled by electronic muti point fuel injection system to test the engine performance in different loading conditions at 2000rpm and 3000rpm. By adjusting different fuel injection timing to research the influences of engine performance, fuel consumption, CO/HC/CO2 exhaust, and throat open degree. In the test result, decrease E85 fuel injection timing can cause the A/F too thin and fuel calorific value low at high rpm and high loading situation. This result can be solved by increasing fuel injection timing to promote engine power and torque output. For the engine in low rpm and normal loading condition, the engine exhaust can be improved greatly by decreasing fuel injection timing due to the ethanol fuel characteristic.