轻型卡车动力总成悬置系统优化研究

为了降低动力总成悬置振动。提高驾乘舒适性。从弹性支承的角度以及悬置的刚度出发，进行动力总成悬置优化研究。测量了NJ1038轻型载货车动力总成的质量与惯性参数和几何参数，建立了4点V型悬置的优化模型，用ADAMS软件进行模型仿真验证。将前、后支承梁等支架作为柔体考虑，真实地模拟了动力总成悬置系统工作时的振动情况。试验证明：主要测点的振动程度下降了40％左右，各悬置垫块的振动传递率降低了30％左右，有效地降低了汽车动力总成悬置振动。

Optimization Research of Power Train's Mounting System of Truck

To reduce the power train's mounting vibration of truck NJ1038,and to improve the driving comfort,the angles of elastic bearing and mounting stiffness are considered,and the mounting of power train is optimized.Power train's mass,inertial and geometric parameters are measured. The model of V-type mounting by four points is optimized.The software ADAMS is applied for simulation analysis.Regarding front and rear carrier as a flexible body,this paper authentically simulates the vibration of power train's mounting system.Experiments prove that the optimization effectively reduces the vibration transferred from mounting system to chassis frame,the amplitudes of main measured points decreases by 40% and the vibration transmission rate of each mounting cushion decreases by 30%.