串联式静液传动混合动力车辆功率管理策略  

Power Management Strategy of Series Hydrostatic Hybrid Vehicle

作　　者：王昕[1,2] 姜继海[3,2] 于安才[3,2] 

机构地区：[1]吉林大学机械科学与工程学院,吉林长春130025 [2]浙江大学流体传动及控制国家重点实验室,浙江杭州310027 [3]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150080

出　　处：《公路交通科技》2011年第7期142-146,共5页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(50875054);浙江大学流体传动及控制国家重点实验室开放基金项目(GZKF-2008003)

摘　　要：针对串联式静液传动混合动力车辆中,发动机工作状况独立于车轮负载情况,储能元件功率密度大、能量密度低的特点,提出了基于随机动态规划方法的发动机功率管理策略,对发动机工作点进行优化控制。根据传统车辆性能参数配置了串联式静液传动混合动力车辆,以降低燃油消耗为优化目标,对原发动机和减小装机功率的发动机工作情况进行仿真。结果表明,采用该控制策略进行优化控制,发动机燃油经济性大幅提高,氮氧化物和烟尘排放明显减少,并且在城市工况下,较小装机功率的发动机在氮氧化物排放性能上优于原发动机。The engine works independently to the wheels load conditions and the energy recovery units have characters of high power density and low energy density in series hydrostatic hybrid vehicle.A stochastic dynamic programming based engine power management strategy was proposed according to the above characters to optimize engine＇s working points.A series hydrostatic hybrid vehicle was configured based on the performance parameters of traditional vehicles.Aimed at reducing fuel consumption,the working conditions of the initial vehicle＇s engine and the lower power engine in hydrostatic hybrid vehicle under the proposed strategy were simulated.The simulation results show that（1） the engine＇s fuel economy increased greatly,NOx and soot emission decreased obviously under the proposed strategy;（2） during the city driving cycles,the lower power engine did better in NOx emission characteristic.

关 键 词：汽车工程 节能减排 随机动态规划 功率管理策略 静液传动混合动力车辆 

分 类 号：TH137[机械工程—机械制造及自动化]