紧凑型扭杆弹簧悬架设计中车轮定位参数的计算

紧凑型扭杆弹簧悬架是普及型轿车中采用的一种主要的悬架结构形式。它属于纵臂式悬架,只能用于后轮,且不能用于转向轮,因此其定位参数只有车轮前束和外倾角两种。决定后轮定位参数的主要是与纵摆臂中制动鼓定位销轴空间有关的轴和孔的加工精度。对其几何模型和力学模型进行了分析,给出了该悬架车轮定位参数的计算方法,并以某车型为例进行了对比计算。

Calculation of Wheel Alignment Parameters in Design of Compact Torsion Bar Suspensions

The compact torsion bar suspension is one of important suspension structure types applied in popular passenger cars.It is one of trailing arm suspension that can only be applied in the rear axle and cannot be applied in the front steering axle,so there are only two wheel alignment parameters:toe-in and camber. Machining precisions of axles and holes correlating with the space position of brake drum's positioning dowel on the trailing arm are the main factors determining the rear wheel alignment parameters.In the paper,its geometric model and mechanical model are analyzed,and the calculation method of wheel alignment parameters is introduced,and comparative calculation with one car as the example is described.