【摘要】 研究开发了一种简单有效的、用于小型二冲程汽油机的膜片式燃油喷射系统（ＤＦＩ）．该系统利用可反映发动机循环供气量的曲轴箱脉动压力驱动膜片式油泵进行燃油的计量和喷射．由于其灵活的燃油喷射方式，该系统和专门的换气系统结合起来可实现分层扫气．更多还原

【Abstract】 Proper fuel supply system is crucial to realize the stratified scavenging for small type oftwo-stroke gasoline engine’ A simple and effective diaphragm fuel injection system (DFI) isdeveloped, which utilizes the crankcase pressure that reflects the inlet flow rate to meter andinject fuel. As the DFI system has flexible fuel injection manner, such a system when combined with a special gas exchange system, can realize stratified scavenging process.更多还原