高速柴油机气阀组件振动监测诊断技术试验研究

Experimental Research on Vibration Monitoring and Diagnosis Technology of Valve Components for High Speed Diesel Engine

介绍了利用气缸盖表面振动信号对高速柴油机气阀组件等故障进行的振动监测诊断试验研究。分析了引起缸盖振动的激励源特征;对单缸熄火和气阀组件等故障进行了模拟试验;对不同故障状态的气缸盖表面振动信号进行了测量分析,提取用于故障诊断的特征参数,建立了不同类型及不同程度故障与特征参数间的相互关系。

The experimental research on the vibration monitoring and diagnosis technology of valve components for a high speed diesel engine by using the surface vibration signals on a cylinder head is presented. The excitation characteristices causing the cylinder head vibration were analyzed. And the fault simulation experiments, such as single cylinder misfire and valve component faults, were carried out. The surface vibration signals on the cylinder head with the different fault conditions were measured and analyzed, the characteristic parameters for diagnosing faults were extracted, and the relationships between the characteristic parameters and the different types and different degrees of faults were established.