Abstract:

To master the control processes method of a hybrid electric vehicle (HEV) with series-parallel configuration, the coordinated control of different powertrain mode-switch dynamic were investigated and tested on typical cycles at normal temperature room with drum testing based on a HEV benchmarking. The results of theoretical analysis of different powertrain mode-switch processes were verified by the test results. The results show that the control strategy about switching process of the powertrain model of the vehicle is attributed to the engine start-stop process control and torque transfer process control. Through the coordination of two motors, the transfer and allocation of torque are completed effectively, and the dynamic switching between modes is realized. The test results are similar to the control process of theoretical analysis.

Key words: hybrid electric vehicle (HEV), series-parallel configuration, mode-switch, coordinated control, bench-marking