层次分析法在电控发动机怠速不良故障诊断中的应用

Application of Analytic Hierarchy Process on Poor Idling Speed Fault Diagnosis of Electrically Controlled Engine

为了快速找到引起电控发动机怠速不良的原因,首先运用故障树分析方法,对电控发动机怠速不良故障进行分析,再引入层次分析法对系统故障进行量化分析,由此得到故障树中每一个基本事件的发生概率。通过计算分析,结果表明:所得到的电控发动机怠速不良检测方法可有效地组织和生成故障诊断规则。研究成果可作为同类课题研究的参考依据。

In order to find out the causes of poor idling speed of electrically controlled engine,fault tree analysis method was used firstly.Combined different causes and combination patterns arousing poor idling speed,the fault of electrically controlled engine poor idling speed was analyzed.After carrying on quantitative analysis to the system of the electrically controlled engine,each basic events occurrence probability in the fault tree was obtained.According to the analysis and calculation,the result shows that it is effective to organize and generate the diagnosis law of electrically controlled engine poor idling speed from the diagnosing method.The result achievement can be regarded as the reference for similar subject.