中文摘要：

汽车传动系参数是否合理匹配,对汽车的动力性和经济性有着很大的影响.进行了以驱动功率利用率和多工况循环使用油耗为衡量动力性和燃油经济性的2个分目标的研究,采用线性加权组合的方法,将其转换为单一目标函数,运用遗传算法对汽车传动系统参数进行优化,实例计算表明可使整车综合性能得到显著改善,表明了正确性与实用性.

英文摘要：

The optimal matching of automobile powertrain can greatly improve the power performance and economy of the vehicle. Study is done with the utilization ratio of driving power and the oil consumption at the cycle of maltiworking conditions as the objective functions of the power performance and the economy performance respectively, and then the two objective functions are transformed to a single one by using the weighted linear combination. The automobile powem＇ain parameter is optimized by genetic algorithm. A calculation example shows that the comprehensive performance of the automobile has been remarkably promoted, and shows its correctness and practicability.