In order to solve the problems of high power consumption, complex pressure compensation algorithm and poor control accuracy of the shifting clutch pressure control system in the special hybrid transmission, based on the vehicle control strategy and one-dimensional fluid flow equation, a limiting pressure relief valve is adopted to replace the fixed throttle hole, and a simulation model is built by AMEsim to obtain the theoretical working characteristics of the system, combined with the measured results of the prototype With the oil filling speed of wet clutch as the optimization goal, the control mode of electric pump is studied and the strategy is optimized. Finally, an efficient wet clutch pressure control system and control method with fast oil filling characteristics and greatly reduced voltage and power consumption are obtained.

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