CNG/汽油两用汽车发动机动力性分析及改善研究  

Improvement of Power Performance of CNG/gasoline Dual-fuel Engine

作　　者：马其华[1] 任洪娟[1] 宋建桐[2] 

机构地区：[1]上海工程技术大学汽车工程学院,上海201620 [2]北京电子科技职业学院汽车学院,北京100026

出　　处：《拖拉机与农用运输车》2009年第6期105-106,109,共3页Tractor & Farm Transporter

基　　金：上海市重点学科建设项目资助(P1405);上海高校知识创新工程(085工程)建设项目资助(JZ0901);上海市培养优秀青年教师基金项目资助(gjd-07019)

摘　　要：电喷汽油机使用CNG燃料后,动力性有所下降,针对此情况,提出以油门开度信号为控制信号,在小负荷工况下,燃用CNG;在大负荷工况下,改烧气为烧油的模式。通过电喷发动机台架试验证明,采用此燃烧模式在发动机大负荷工况下,动力性改善效果明显,燃料能耗有所下降。Being the factors of Own characteristics,the EFI gasoline engine is rebuild into gasoline-CNG engine;the engine＇ s power performance is reduced. According this, this paper puts toward the scheme ： using the TPS （Throttle Position Sensor） signal as a control signal, the engine fuels with CNG in low load, and then the CNG supply is shut off, the gasoline is supplied for combustion in order to improve the engine＇ s dynamic performance in high load. This scheme can obviously improve the power and economy of CNG/gasoline Engine.

关 键 词：CNG 发动机 动力性改善 

分 类 号：U464.173[机械工程—车辆工程]