摩托车发动机弹性悬置减振研究

A Study on Vibration Attenuation by Elastic Engine Mount in Motorcycle

发动机弹性悬置可以减小发动机激振引起的摩托车振动,设计弹性悬置的主要工作是根据发动机质量、转动惯量和弹性元件刚度来计算弹性悬置发动机系统的自然频率,并修改弹性元件结构、材料以尽可能满足2倍最高弹性悬置发动机系统自然频率小于发动机最低工作激振频率这一条件。试验结果表明,发动机弹性悬置具有很好的减振效果。

Elastic engine mount can reduce the vibrations of motorcycle. The design of the elastic engine mount includes two parts. The first is to calculate the natural frequency of elastic engine mount according to the mass, the moment of inertia of the engine and the stiffness of elastomer elements. The second is to modify the structure and material of elastomer element to meet the requirements that 1.42 times of highest natural frequency of elastically mounted engine system should be less than the lowest excitation frequency of the engine. The test result shows that the elastic engine mount has a good effect of vibration attenuation.