No abstract

Traditional vehicles must separate clutch during the shifting process, which will lead to clutch wear. Parallel hybrid electrical vehicles introduce a motor which makes it possible to shift without separating clutch. This paper proposes a control algorithm which combines engine control with motor control to realize shifting control without using clutch based on dynamic analysis for every shifting stage, of which the key technologies are accurate motor torque and speed control to make full use of motor rapid response ability. The simulation result shows this can significantly improve driving comfort, shift transient property and extend service life of clutch.