基于扭振信号的柴油机单缸熄火故障诊断与监测  

Diagnosis and Monitoring of Misfire for Diesel Engine Based on Torsional Vibration

作　　者：蔡鹏飞[1] 顾含[1] 刘昕[1] 张松阳[1] 王孝霖[1] CAI Pengfei GU Han LIU Xin ZHANG Songyang WANG Xiaolin(China Satellite Maritime Tracking and Control Department, Jiangyin 214431 , China)

机构地区：[1]中国卫星海上测控部,江苏江阴214431

出　　处：《中国航海》2017年第2期34-37,共4页Navigation of China

摘　　要：利用曲轴扭振波形参数对柴油机熄火故障进行监测和故障定位分析,并开发故障监测系统。通过试验模拟柴油机熄火故障,利用曲轴扭角峰峰值、各谐次幅值和峭度值可准确地监测熄火故障。对扭角时域波形进行滤波处理后,与上止点参考信号和发火间隔角结合分析,可准确定位发生熄火故障的气缸,开发的故障监测系统可及时对熄火故障进行报警。A misfire detection and alarming system is developed in which misfire of a diesel engine is monitored and the fault cylinder is identified according to the parameters of the torsional vibration. Studying on the simulative diesel engine misfire phenomenon reveals that observing the peak-peak values of torsional vibration and the harmonic amplitudes/kurtosis values of the vibration can detect the misfire. The filtered torsional vibration waveform in time domain, combined with the signal of TDC and firing angle, can be used to identify fault cylinder.

关 键 词：船舶工程 柴油机 熄火 扭振 滤波 监测 定位 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程] U664.121[交通运输工程—船舶及航道工程]