用等参元法分析PA6—280柴油机配气机构的动态特性

本建立了一个内燃机配气机构等参元动力学模型，并用该模型分析了ＰＡ６－２８０柴油机配气机构的动态响应，计算出的自振频率，气阀升程及气阀加速度等与实测值吻合得很好，结果还表明该机的配气机构在高速工作时有飞脱的危险，气阀开启时冲击较大。

Dynamic Analysis of the Valve Gear of PA6 280 Diesel Engine by Isoparametric Element

An isoparametric element dynamic model for the valve gear of I.C. engine is established in this paper, the dynamic responses of the valve gear of PA6 280 diesel engine is also analysed, the calculated results tally with the measured valve in self vibration frequency, valve lifts and valve acceleration. The results also show that the valve gear of this engine will send flying when it works at high speed and the impulse is considerable when the valves lift.