Clutches are widely utilized for not only implementing gear shifting but also transmitting power in hybrid electric vehicles(HEVs).During the driving mode transition in a P2-structure HEV,the coordination of between power sources,such as engine and electric motor,is realized by a hybrid clutch.Therefore,it is of great significance to establish a control strategy for the hybrid clutch ensure drivability and driving comfort.In this study,a physical model of the hybrid clutch and other relevant components in the hybrid system is established in MATLAB/Shnulink firstly.Then,a model-based coordinated control strategy is developed for the hybrid clutch during the driving mode transition.The hydraulic oil filling and torque transferring characteristics of the hybrid clutch are mainly considered in the control strategy.Finally,the proposed control strategy is validated by simulation and the results show that the quality of driving mode transition is obviously improved.
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