单行星排混联式混合动力构型设计及性能验证

针对现有单行星排混联式混合动力汽车存在的功率循环问题，以提高整车动力性和经济性为目标，提出了一种结合自动离合器、自动制动器和减速齿轮副的新型单行星排混联式混合动力构型。对关键总成参数进行匹配和对行星排齿轮结构进行设计，基于ANSYS进行强度分析；以发动机燃油经济性最佳为目标控制策略，基于AVL Cruise和MATLAB/Simulink/Stateflow搭建联合仿真平台，对整车动力性和经济性进行验证。结果表明，与现有行星排混联式混合动力构型相比，采用新构型汽车的最高车速提高了3.8%，0~100 km/h加速时间缩短了7.64%，最大爬坡度提高了18.09%，WLTC工况下100 km综合油耗降低了14.88%。使用新构型能消除功率循环，有效提高整车动力性和经济性，可为其他混合动力构型设计提供参考。

Configuration design and simulation verification of single planetary gearset power-split hybrid electric vehicle

Aiming at the power cycle problem existing in the available planetary gearset power-split hybrid electric vehicle,a new configuration of single planetary gearset power-split hybrid electric vehicle combined with automatic clutch,automatic brake and reduction gear pair was proposed in order to improve the vehicle power performance and economical performance.The key assembly parameters were matched,the structural design of the planetary gearset gears was completed,and the strength analysis was carried out based on ANSYS.The control strategy aiming at the best fuel economy of the engine was proposed,and the co-simulation platform was built based on AVL Cruise and MATLAB/Simulink to verify the vehicle power performance and economical performance.The results show that compared with the available planetary gearset power-split hybrid configuration,the maximum speed of the vehicle with the new configuration is increased by 3.8%,the acceleration time from 0 to 100 km/h is shortened by 7.64%,the maximum climbing degree is increased by 18.09%,and the comprehensive fuel consumption per 100 km under conditions WLTC is decreased by 14.88%.Using the new configuration can eliminate the power cycle and effectively improve the vehicle power performance and economical performance,which provides some reference for the design of other hybrid configurations.