本文扼要地论述了汽车动力性、燃油经济性计算机模拟的基本原理及程序编制中的主要问题。介绍了笔者编制的模拟计算程序。通过对实际例子的计算与分析,提出了一种优选汽车主减速比的方法,得到了一些初步的结论。 This article briefly discusses the basic principles of computer simulation of automotive power, fuel economy and the main issues in programming. Introduced the author compiled simulation program. Through the calculation and analysis of the actual examples, a method of optimizing the main reduction ratio of the automobile is proposed, and some preliminary conclusions are obtained.