本文用试验的方法 ,测取柴油机在几个常见故障及不同故障程度下的振动信号 ,分析并得出了对各故障变化最敏感的振动信号参数 ,即特征参数 ,为柴油机的故障诊断提供了很多有用的信息。 In this paper, the vibration signal of diesel engine under several common faults and different fault degrees is measured by the test method. The vibration signal parameters which are most sensitive to the fault changes are obtained, namely the characteristic parameters, which provide the fault diagnosis of diesel engine A lot of useful information