利用曲轴转速波动间接诊断内燃机燃烧状态  

Diagnose combustion state of IC engine by crankshaft speed fluctuation signal

作　　者：李玉华[1] 张力[1] 康健[1] 黄永生[2] 黄新华[1] 

机构地区：[1]重庆大学机械工程学院,重庆400030 [2]装甲兵技术学院,吉林长春130117

出　　处：《传感器与微系统》2010年第10期52-54,58,共4页Transducer and Microsystem Technologies

基　　金：重庆市自然科学基金资助项目(2007BA6026);重庆市科技攻关计划资助项目(2007AA60066)

摘　　要：瞬时转速—缸压模型的建立验证了瞬时转速波动间接诊断燃烧状态的可行性,在此基础上定义了4种燃烧状态特征参数,并提出了一种多燃烧状态特征参数综合的方法。实验数据分析表明:这4种燃烧状态特征参数分别能单独诊断内燃机燃烧状态,且综合燃烧状态特征参数比单个燃烧状态特征参数诊断正确率更高。Feasibility of using instantaneous speed fluctuation to diagnose IC engine combustion state is proved by building instantaneous speed-cylinder pressure model. Moreover, four kinds of characteristic parameters of combustion states are defined and a method of integrated characteristic parameter of multiple combustion state. The result of experimental data analysis shows that the four kinds of characteristic parameters can separately diagnose IC combustion states ; furthermore, integrated characteristic parameter has higher accuracy rate than individual characteristic parameter to diagnose IC combustion state.

关 键 词：内燃机 燃烧状态 特征参数 失火诊断 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]