Research on Ethanol-gasoline Blended Fuel in Automotive Gasoline Engine

Global Energy and Environmental Issues have enhanced the development of new energy vehicle. The purpose of this study is to model and analyze the performance and exhaust emissions of a four-stroke SI engine operating on ethanol-gasoline blends of E80, E85 and E90 with the aid of AVL-BOOST. A model has been developed in an engine cycle to simulate the engine using ethanol and gasoline blends as fuels. With working characteristics of the model have been calculated, the study of variable parameters is carried on the engine which is fueled with ethanol gasoline blends. Under the working condition of max torque, the influences of compression ratio, the ignition advance angle and the intake valve closing angle are simulated and analyzed for three kinds of fuel material. At the same time a final engine performance is analyzed. It provides reference for structural optimization of gasoline engine and further three dimensional numerical calculations.