双横臂悬架--扭杆弹簧--电动轮模块的开发与应用

减少四轮驱动电动汽车关键零部件的种类，简化整车结构，是降低其批量化制造成本的有效途径。为此，在对悬架导向机构和转向机构进行优化设计的基础上，提出双横臂悬架—扭杆弹簧—电动轮模块化设计概念和一种零前束变化非转向轮双横臂悬架导向机构，实现了前后悬架—电动轮模块的通用化，并成功应用于国内第一台线控转向四轮驱动燃料电池微型汽车“春晖三号”底盘系统的开发。

DEVELOPMENT AND APPLICATION OF THE MODULE STRUCTURE OF IN-WHEEL-MOTOR AND DOUBLE-WISHBONE SUSPENSION WITH TORSION BAR

In order to cut down the manufacturing cost of four in-wheel-motor drive electric vehicle, it is an effective way to reduce the items of parts and components and simplify the structure of chassis. Based on the optimum design of the suspension and steering mechanism, a new double-wishbone suspension mechanism with zero toe-in fluctuation is presented, and then a module structure composed of double-wishbone-suspension, torsion bar and in-wheel-motor is developed. Thus same structure of the suspension-in-wheel-motor module can be used in the front and rear wheel, and the results have successfully been applied in the development of the Spring Sunshine, which is a new type of four in-wheel-motor drive fuel cell vehicle with steer-by-wire.