针对目前混合动力汽车结构较为复杂的问题,提出了一种新型的双桥驱动模式。通过对某汽车进行牵引力耦合式混合驱动系统设计,使之成为双轴驱动混合动力,并可简单切换汽车的工作模式。建立了双桥驱动的混合动力汽车模型,并通过AVL-Cruise仿真得到了混合动力汽车的爬坡度、加速时间、耗电量、油耗和发动机工作点分布。仿真结果表明,牵引力耦合式混合动力驱动系统可以使发动机和电机均工作于高效区,提高了燃油利用率,节能、减排优势明显。

In view of the complicated structure of the Hybrid Electric Vehicle(HEV), a two-axle driving system is proposed. A traction coupled-HEV drive system for the vehicle is designed, making it a two-axle drive HEV. The vehicle can simply switch the operating modes. A two-axle drive HEV model is established with the aid of AVL-Cruise, and its performance indices, such as the maximum gradient, the acceleration time, the power and the fuel consumption, and the distribution of the engine's operating points, are obtained by simulation tests. The results show that the traction coupled-HEV drive system allows the engine and the motor work efficiently. Therefore, the fuel efficiency is improved, and the advantages in energy saving and emission reduction are significant.