摘要
选取混合动力城市公交客车为目标参数。基于选定的液压泵／马达基础上建立动力学模型。并对仿真结果进行了分析。结果表明：在不同城市车流量道路的初始制动的能量回收，能缩短制动时间和获取较高的制动回收率。对改善汽车燃油经济性具有重要意义。
Hybrid city bus as the target parameter selected , Hydraulic accumulator is selected ,Based on the selected hydraulic accumulator based on dynamic model is established, the simulation results were analyzed. The results show that：In different initial braking energy recovery vehicle flow of the city, The braking time is shortened and the recovery rate was enhanced braking, and it has important significance to improve the vehicle fuel economy.
