大型車のエンジンマウントの最適設計 : 第1報, エンジンマウント機能の理論的考察

概要

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Rubber engine mounting is usually used for a heavy duty trucks which have 4 engine mounting points. The purposes of its mounting system are as follows. (1) engine vibration reduction (2) body frame vibration reduction (3)supporting the engine weight and torque (4)power line noise and vibration reduction. In case of (1), the rolling mode vibration is most important because of the input torque from the engine crank shaft. So, the eigen value of rolling mode should be lower than 1/√<2>2 of the frequency of exciting torque. In case of (2),the power plant which is the combination of engine, clutch and transmission should be acted as the dynamic damper of the body frame bending vibration. For this purpose, the eigen value of the bouncing mode should have the same resonance point of the frame and a reasonable damping force. The first paper describes the differential equation of six freedoms and that of the dynamic damper. The comparison between theory and FEM is also conducted to confirm the accuracy of the simulation.
社団法人日本機械学会の論文
1999-03-25