基于振动信号的柴油机气门间隙异常故障诊断  

Abnormal State Fault Diagnosis of Diesel Engine Valve Clearances based on Vibration Signal

作　　者：王春林[1] 梅卫江[1] 边金英[1] 赵永满[1] 吴疆[1] 

机构地区：[1]石河子大学机械电气工程学院,石河子832003

出　　处：《石河子大学学报（自然科学版）》2010年第1期113-117,共5页Journal of Shihezi University(Natural Science)

摘　　要：为探讨简易诊断柴油机气门间隙异常的有效方法,采用柴油机缸盖表面的振动信号进行试验研究。采集了柴油机在不同气门间隙下的振动信号,用时域法和频域法相结合的分析方法对故障特征信号进行分析,得出了气门间隙异常的频率特性和判断依据。结果表明,采用振动检测技术可以实现不拆卸配气机构就可简易诊断柴油机气门间隙异常故障。In order to find effective methods of easily diagnosing the abnormal state of diesel engine valve clearances,an experimental study on using cylinder cap＇s surface vibration signal has been shown in this paper. The vibration signals at different valve clearances are mainly tested and measured. The methods of time-domain and frequency-domain are used to analyze them. Frequency characteristics and identifying methods of the abnormal state of engine valve clearances are brought out. The results show that vibration monitor can diagnose the troubles of abnormal state of diesel engine valve clearance without disassemblage and easy to be used in on-line monitoring.

关 键 词：柴油机 振动信号 气门间隙异常 故障 诊断 

分 类 号：TK407[动力工程及工程热物理—动力机械及工程]