悬架K&C特性参数在车辆开发中的应用研究  

Research on the Application of Suspension K&C Characteristic Parameters in Vehicle Development Process

作　　者：蓝贤清 贺继龄 Lan Xianqing;He Jiling(Changsha Automotive Research Institute of Hunan LEOPAARD Motors Co.,Ltd.,Hunan Changsha 410100)

机构地区：[1]湖南猎豹汽车股份有限公司长沙汽车研究院,湖南长沙410100

出　　处：《汽车实用技术》2020年第16期130-132,139,共4页Automobile Applied Technology

基　　金：湖南省战略性新兴产业科技攻关与重大科技成果转化专项项目(2018GK4004)。

摘　　要：经试验台测得车辆在各状态各工况下的悬架K&C特性参数,在新车型开发过程中有着重要的参考和指导作用。文章以K&C特性参数在整车姿态角的确定及前后悬架偏频的平衡计算为例,通过悬架下行程参数等效到车辆从空载到满载状态悬架压缩量,结合轴距计算车辆从空载到满载时整车姿态角差值,用于指导总布置及造型设计;通过悬架刚度和簧上质量参数计算得到悬架偏频,并结合轴距参数对特定车速下前后悬架的偏频进行平衡匹配,以减小车辆通过突起障碍时的角振动从而改善乘坐舒适性,用于指导悬架设计及动力学性能开发。The K&C characteristic parameters of vehicle suspension measured by specialized K&C test-bed under all kinds of states and working conditions,is very important in vehicle development.In this paper,using suspension K&C charac-teristic parameters,take the vehicle pitching angle calculation and suspension ride frequency matching as example.Through the equivalence of suspension down stroke parameters to suspension compression from curb load to GVW state,combined with wheelbase to calculate vehicle pitching angle deviation,which can be used to guide the general layout and modeling design.Using suspension stiffness and sprung mass to calculate front and rear suspension ride frequency,then balanced match them combined with wheelbase under a specific speed,so as to reduce the angular vibration when the vehicle passes through the bump obstacle to improve the ride comfort,which can be used to guide the suspension design and dynamic performance development.

关 键 词：K&C特性 整车俯仰角 悬架偏频 

分 类 号：U461.4[机械工程—车辆工程]