故障树分析法诊断柴油发动机的常见故障

Fault Diagnosis of Diesel Engine by Failure Tree Analysis Method

故障树分析法(FAT)又简称失效树分析,是一种将系统故障形成的原因由总体到部分按树型结构逐级分析的方法。从系统的角度来说,故障既有因设备中具体部件(硬件)的缺陷和性能恶化所引起的,也有因软件,如自控装置中的程序错误等引起的。此外,还有因为操作人员操作不当或不经心而引起的损坏故障。因此,应用此方法可对常见的车用柴油发动机系统故障进行分析诊断。

Failure Tree Analysis（FAT）,also known as falut tree analysis,is a method to analyze the causes of the system failure from whole to the parts according to the tree structure step by step.From the systemic point of view,the failure may be caused by defects and performance of specific components（hardware）,or caused by software,for example,the procedural errors of automatic control devices.In addition,the improper operation of operators or not attentive operation also can cause failure.Therefore,we should apply this method to analyze and diagnose the common fault of the diesel engine system.