噪声与振动控制2016，Vol.36Issue(3)：142-146,5.DOI:10.3969/j.issn.1006-1335.2016.03.029
二冲程柴油机瞬时转速法诊断机理研究
Study on the Mechanism of Instantaneous Speed Diagnosis Method of Dual-stroke Diesel Engines
摘要
Abstract
Taking a 5S50ME dual-stroke diesel engine with 5 cylinders as the object, the diagnosis mechanism of the instantaneous speed method is studied. The instantaneous speed signals in normal operation state and fault operation state of the engine are measured. The variation law of the instantaneous speed in different operation conditions is obtained. On this basis, by analyzing the instantaneous speed waveform diagram and spectrum diagram, two characteristic parameters, volatility peak and harmonic amplitude ratio, are proposed which can effectively reflect the fault status of the engine. If the harmonic amplitude ratio of the 1st-order harmonic component to the 5th-order harmonic component is greater than a certain threshold, there is a single-cylinder fault in the diesel engine, and the cylinder which has the minimum volatility peak is the faulty cylinder.关键词
振动与波/二冲程柴油机/瞬时转速/故障诊断/谐波幅值比/波动率峰值Key words
vibration and wave/dual-stroke diesel engine/instantaneous speed/fault diagnosis/harmonic amplitude ratio/volatility peak分类
信息技术与安全科学引用本文复制引用
王磊,向阳,王帅..二冲程柴油机瞬时转速法诊断机理研究[J].噪声与振动控制,2016,36(3):142-146,5.基金项目
国家自然科学基金资助项目 （）
