汽车发动机诊断的统计模拟方法

Statistical Simulation Applied to Automotive Engine Diagnosis

运用统计模拟的方法 ,提取发动机信号的故障特征 ,并给出这些特征值的置信区间 ,实现了故障的定量诊断。在柴油机供油系统和汽车发动机中的诊断实践充分证明了该方法的优越性。

In this paper the statistical simulation method is used to extract the fault features of engine parts and fuel system from corresponding engine sound and oil pressure fluctuation signals Moreover,the confidence range of these feature values are also given,thus achieving the quantitative diagnosis for the faults Practice shows that the statistical simulation method is reliable and practical in engine diagnosis