某型轿车悬架设计摘 要
随着汽车工业的发展，人们对汽车乘座舒适性和安全性的要求逐渐提高，因
此对汽车悬架系统和减震器也提出了更高的要求。这次设计的微型汽车的悬架系统是有实际意义的。
本次设计的主要内容是：奇瑞微型汽车的前、后悬架系统的结构设计。其前后悬架均采用目前比较流行的麦弗逊式独立悬架，减震器为液力双向作用筒式减震器。本说明书还包括前、后悬架性能和结构特点的介绍，悬架参数的确定，减震器设计及计算过程，螺旋弹簧设计及设计过程，悬架刚度和挠度的计算以及各零部件包括连接处的选择。
在对样车悬架进行平顺性分析中，建立了两自由度的平顺性分析模型，分别绘制车身加速度幅频特性曲线、相对动载幅频特性曲线、弹簧动挠度幅频特性曲线分析了悬架参数对汽车平顺性的影响。因此，这次设计的悬架系统具有良好的行使平顺性
关键词：悬架系统；减震器；螺旋弹簧；导向机构；平顺性
Suspension design of a certain type of car
Abstract
With the development of the automobile industry, people have been promoting th e requirement for the safety and ride comfort of vehicles. As a result there is a big de mand on the suspension and the shock absorber system. The design of the mini-car su spension system is a practical sense.
The project mainly includes the designs of the front and rear suspension system o f the Chery Automobiles. The independent McPherson suspension in common use is a dopted in both the front and the rear suspension system. The shock absorber with two- direction hydrauliccylinder is applied here. This papers introduced the structure chara cteristics of the front and rear suspension, determined the suspension parameters, desi gned and calculated the shock absorbers and coil spring, etc.
In the suspension analysis of the sample car, a model with two degree of freedom s is established. Some curves for ride quality analysis are carried out. From the calcula ted curves, some topics on how the suspension parameters effect on the ride comfort a re discussed. Therefore, a conclusion can be drawn that the current designed suspensi on system has a good ride performance.
Key words：Suspension system; Shock absorber; Coil spring; Guidance mechanism;
Ride performance
7.2 悬架对汽车平顺性的影响 . - 20 -
总结与展望 ............................................................................................................ - 22 -
致谢 ........................................................................................................................ - 23 -
参考文献 ................................................................................................................ - 24 -
附录 A ..................................................................................................................... - 25 -
附录 B ..................................................................................................................... - 27 -
附录 C ..................................................................................................................... - 37 -
