The crankshaft angular vibration signal of ICE gains abroad attentions both here and abroad for its advantages of simple measurement and abundant information, which is the hotspot in fault diagnosis field of ICE presently.

• 内燃机曲轴角振动信号以其测量简便和信息丰富的优点,得到了国内外的广泛关注,是目前内燃机故障诊断领域的前沿和研究热点。