The effects of high order motions of reciprocating parts on the variation of inertias and natural frequencies of crankshaft system are discussed in this paper.

• 本文分析了内燃机曲柄连杆机构往复运动件的高谐次运动对轴系惯量变化和固有频率的影响；并对一多缸机轴系进行了扭振计算.