闭环控制喷油定时实现柴油机排放性能优化的试验研究  

Experimental Research on Optimization of Diesel Emissions Through Closed-Loop Control of Injection Timing

作　　者：李学民 于秀敏[1] 高跃[1] 张建锐[1] 

机构地区：[1]吉林大学 汽车工程学院,长春130025

出　　处：《内燃机工程》2004年第6期4-6,10,共4页Chinese Internal Combustion Engine Engineering

基　　金："十五"国家科技攻关计划资助项目(2003BA408B04)

摘　　要：本文阐述了闭环控制喷油定时的实际意义,并利用针阀升程传感器信号作为反馈,说明了闭环控制喷油定时的实现及计算方法。利用针阀升程传感器来闭环控制喷油定时具有较高的工作稳定性和可靠性,在试验中验证了其精度范围,并结合欧-Ⅲ排放达标项目的试验,利用闲环控制喷油定时进行了电控柴油机的标定匹配,较好的实现了柴油机排放性能的优化。The significance of closed-loop control of injection timing was introduced, the principle and method of injection timing calculation with the feed back of a needle-motion sensor was explained and the precision of this method in experiment was tested. Closed-loop controlling injection timing with a needle-motion sensor has high stability and reliability. By using the closed-loop control of fuel injection timing in the electrical control system, the emission performance of diesel engine can be optimized to meet the Euro-III emission standard.

关 键 词：内燃机 喷油定时 柴油机 性能优化 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]