基于离子电流积分信号的HCCI失火控制  

HCCI Misfire Control Based on Ion Current Integral Signal

作　　者：张栖玉[1] 张志永[1] 李从跃[1] 李理光[1] 

机构地区：[1]同济大学汽车学院,上海201804

出　　处：《汽车工程》2011年第10期850-854,共5页Automotive Engineering

基　　金：国家"973"重点基础研究发展计划项目(2007CB210005);上海市重点学科建设项目(B303);"高等学校创新引智计划"111项目(B08019)资助

摘　　要：搭建了HCCI汽油机试验台,并通过试验为其离子电流检测系统及其信号积分电路选定合适的参数。分析了不同燃烧工况下的离子电流积分信号特征及其与燃烧的相关性,最后对低速小负荷工况HCCI失火循环进行了基于离子电流积分信号反馈的循环内补火闭环控制的试验研究,结果表明,离子电流积分信号可作为失火的判断标准,而循环内补火可有效地引燃混合气,降低HC排放。A test bench for HCCI gasoline engine is built,in which the proper parameters of ion current detection system and its signal integral circuit are determined through tests.The features of ion current integral signal and its correlation with combustion are then analyzed.Finally an experimental study is conducted for the misfire cycle of HCCI engine in low-speed light load condition on the closed-loop control of in-cycle re-ignition based on ion current integral signal feedback.The results show that ion current integral signal can be taken as misfire criterion,and in-cycle re-ignition can effectively ignite mixture and hence reduce HC emission.

关 键 词：均质混合气压燃 离子电流 积分信号 循环控制 

分 类 号：U467.2[机械工程—车辆工程]