汽车动力总成悬置系统振动控制设计计算方法研究  

Calculation methods for the vibration control design of a powertrain mounting system

作　　者：上官文斌[1] 黄天平[1] 徐驰 顾彦[3] 

机构地区：[1]华南理工大学汽车工程学院,广东广州510641 [2]宁波拓普声学振动技术有限公司,浙江宁波315800 [3]泛亚汽车技术中心有限公司,上海201201

出　　处：《振动工程学报》2007年第6期577-583,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金(50575703);汽车安全与节能国家重点实验室开放基金(KF2006-06);广东省电动汽车研究重点实验室开放基金(B21E406012)

摘　　要：建立了含有液阻悬置的动力总成悬置系统振动控制分析模型,当动力总成在路面激励和绕曲轴扭转方向激励下,给出了动力总成质心位移和悬置支承点动反力频响特性的计算公式;计算了一轿车动力总成质心位移和悬置支承点动反力的幅频响应,由此阐述了动力总成悬置系统中液阻悬置滞后角峰值频率和滞后角峰值大小设计的方法。计算结果表明,利用该方法设计的液阻悬置的动态特性,可以有效地控制动力总成在垂直方向的振动和绕曲轴方向扭转振动,减小悬置支承点动反力的幅值,从而减小车身的振动和降低车内噪声。A model for a powertrain mounting system （PMS） consisting of hydraulic engine mounts （HEM） for vibration control of the powertraln is presented. Calculation methods for determining the dynamic displacements of a powertrain center of gravity developed loss angle mounts ar formulae. engine （c. g. ） and the dynami in this paper. Also a gen of an HEM is proposed. e estimated for a generic The calculated results de c reaction forces of each mount in a PMS under ground and engine eral strategy for determining the peak frequency of the loss angle and shake excitation are the amplitude of the The amplitude versus frequency responses of a powertrain c. g. and reaction forces of PMS with four rubber mounts or two rubber mounts and two HEMs with the developed monstrate that the amplitudes of a powertrain c. g. in bounce mode and roll mode （around and reaction forces in each mounts of a PMS can be vibrations of the car bo according to the design dy. The methods developed in the paper can be used criteria of powertraln vibration control. reduced greatly for optimizing d by using HEMs, thus reducing ynamic characteristics of mounts

关 键 词：动力总成悬置系统 液阻悬置 振动控制 设计计算 

分 类 号：TH113[机械工程—机械设计及理论] U464[机械工程—车辆工程]