AMT中度混合动力汽车经济性换挡规律研究

Economic Shift Rule for Medium HEV with AMT

针对装备机械自动变速器(AMT)的中度混合动力汽车,综合考虑发动机、电动机/发电机、电池和传动系统的效率,以动力传动系统效率最优为目标,确定了驱动工况各工作模式工作区域。在此基础上,分别对各模式下的经济性换挡规律进行研究,获得了中度混合动力汽车驱动工况下的经济性换挡规律。在MATLAB/Simulink平台上,采用ECE+EUDC循环工况对所提出的经济性换挡规律进行仿真,结果表明,与ADVISOR中的传统换挡控制规律相比,所提出的换挡控制规律能较好地提高整车的燃油经济性。

Based on a medium HEV with an AMT,the work area was gained with maximizing systematic efficiency as objective,by comprehensively considering the efficiency of the engine,motor/ generator,battery and transmission system.And then the economic shift rule under driving conditions was obtained after analyzing the economic shift rule of each working mode.The simulation of the proposed economic shift rule was carried out on the platform of MATLAB/Simulink under cycle condition of ECE＋EUDC.The results indicate that it can improve the fuel economy of medium HEV compared to the traditional shift rule of ADVISOR.