New Type Of Electronically Controlled Direct Injection Lpg Engine Injection System

LPG Direct Injection Engine is the LPG Engine's development current. Based on the study on the LPG direction injection system, we developed a new type LPG direction injection system that contains back press equipment. The LPG high -pressure transport equipment and high injection assemble constituted the system. In this system, the LPG high-pressure transport equipment included primary press device, hydraulic press increase device and electronic controlled unit. Also the high injection assemble contained the injector, back press equipment that you can call it hydraulic fuel cut equipment and electronic controlled unit.Analysis and compute the LPG direct-injection course, and expatiate the exceptional injection during the LPG direct-injection course. Discuss the back press injector predigest model, and analysis the dynamic response characteristic of the back press injector.Optimize the control policy and of the new type LPG Direct Injection system. Improved the electronic controlled unit soft and hard ware, especially the injection system drive circuit and the soft ware design.The experiment that tests the performance of new type LPG direct-injection system. The tests result shows that the new type LPG direct-injection system is feasible. The system improve the power performance, also the idle emission performance have improve.