中文摘要：

以重型串联式液压混合动力汽车为研究对象，提出了基于规则的能量管理策略，并对整车设计了4种工作模式。搭建了其Matlab／Simulink整车仿真模型，对液压混合动力车辆总需求功率、发动机功率、液压系统回收功率、蓄能器流量、 SOC （ State of Charge）等参数进行了仿真，分析对比了传统汽车和液压混合动力汽车发动机扭矩工作点。仿真结果表明：液压混合动力汽车发动机和液压系统提供的功率可以满足总需求功率要求，其燃油经济性显著提高， SOC保持在合理范围内，发动机工作平稳，所设计的能量管理策略可靠有效。

英文摘要：

By taking the in series heavy hydraulic hybrid vehicles as the study object, the rule？based energy management strategy was presented, and four modes of whole vehicles operation were designed. The simulation model of whole vehicles for Matlab/Simulink was established. The total demand power, engine power, hydraulic system recovery power, accumulator flow, State of Charge （ SOC） and other parameters for simulation of hydraulic hybrid vehicles were performed. The torque operating points of engine of the traditional vehicles and hydraulic hybrid vehicles were analyzed and compared. Simulation results show that：The power provided by the hydraulic hybrid vehicles engine and hydraulic system can meet the total demand of power requirements, which fuel economy is improved signifi？cantly, SOC is kept within reasonable limits, the engine is worked smoothly, and the design of energy management strategy is reliable and effective.