The Application of In-cylinder Direct Injection Technology to Small Gasoline Engine

For a single cylinder gasoline engine,the in-cylinder direct injection was researched and the fuel supply system,electronic-controlled fuel injection system and engine bench test system were designed.The experimental results of some benches were studied and analyzed.The results show that the power and emission performance of modified small gasoline direct injection engine are obviously improved.The injection timing has great influence on emissions.The homogenous charge is also a feasible method when the stratified charge is hard to realize.