车用天然气发动机怠速转速闭环控制研究  

Study on the Idle Speed Closed-Loop Control for Vehicle-used Natural Gas Engine

作　　者：郑轶[1] 张红光[1] 刘凯[1] 王道静[1] 温亮[1] 吴迪[1] 王典[1] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100124

出　　处：《小型内燃机与摩托车》2009年第4期1-4,15,共5页Small Internal Combustion Engine and Motorcycle

基　　金：北京市属市管高校人才强教计划资助项目(J4310790200801);北京市留学人员科技活动择优资助项目(38005015200701);北京市教委08年科研计划项目(JC005012200801);北京工业大学研究生科技基金资助项目

摘　　要：采用自主研发的ECU和转速采集系统,应用增量式PID控制算法对天然气发动机的怠速转速进行闭环控制,研究了PID控制参数和混合气浓度对发动机怠速稳定性的影响。试验表明,自主研发的ECU和转速采集系统实用可行。Idle speed is one of the important conditions for vehicle-used natural gas engine. Whether idle speed is stable or not has important influence on vehicle-used natural gas engine performance. A serf-depend- ent developed ECU and speed acquisition system were adopted. Incremental PID control algorithm was applied to idle speed closed-loop control for natural gas engine. And then PID control parameter and mixture density were studied in order to find out the influence on idle speed stability. The experimental results show that self- dependent developed ECU and speed acquisition system are practical and feasible.

关 键 词：天然气发动机 怠速 闭环控制 PID 

分 类 号：TK433[动力工程及工程热物理—动力机械及工程]