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建立了汽车传动系统模型，研究了实现发动机最佳燃油经济性的算法，考虑到系统模型的强非线性特征以及发动机节气门与变速器速比对汽车动态性能的耦合作用，给出了保证实现汽车的动力性能和最佳燃油经济性的综合控制算法。建立了具有双变量闭环回路控制的综合控制系统，设计出模糊控制器和ＰＩＤ控制器，最后通过仿真比较了两种控制方法对综合控制效果的影响。
The vehicle transmission system model is established and the algorithm to realize the optimal fuel economy of the engine is studied. Considering the strong nonlinear characteristics of the system model and the coupling effect of the engine throttle and transmission ratio on the dynamic performance of the vehicle, The dynamic performance and the best fuel economy integrated control algorithm. A comprehensive control system with double-variable closed-loop control is established, and the fuzzy controller and PID controller are designed. Finally, the influence of two control methods on the comprehensive control effect is compared by simulation.