The research is based on single-axis parallel hybrid electric vehicle (PHEV) equipped with AMT (Automatic mechanical transmission). Dynamics model of shift process is established based on the shift control strategy without disengaging the clutch. This paper analyses the active synchronization and shift process. On this basis, the control strategy model of shifting without synchronizer and vehicle model are established respectively by using MATLAB and Cruise. Through the union simulation and analysis of the simulation data, it validates that the control strategy of shifting without synchronizer is feasible.

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