Smoothing control for working mode switching and torque of hydrostatic transmission double-motor vehicle
A working mode, dual-motor technology, applied in hybrid vehicles, motor vehicles, electric vehicles, etc., can solve the problems of difficult layout of mechanical power distribution devices, inaccurate torque estimation of electric hybrid engines, and high cost, and achieves improved transmission. Efficiency and road adaptability, avoidance of power interruption or torque surge, low cost effect
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[0018] Embodiment 1: A hydrostatic transmission dual-motor rear-drive vehicle consists of an engine 1, a hydraulic variable pump 2, a pressure sensor 3, a high-pressure hydraulic accumulator 4, a two-position two-way reversing valve 5, a hydraulic pump motor 6, and a clutch 7 , 9, rear wheel 8, variable motor 10, rear axle 11, low-pressure hydraulic accumulator 12 and vehicle controller 13 to form. The working mode switching and switching process torque control method of a hydrostatic transmission dual-motor rear-drive vehicle includes the following steps:
[0019] Step 1: Determine the required torque and operating conditions of the vehicle under the current conditions according to the descending range of the accelerator pedal and the vehicle speed. The required torque of the vehicle is determined by the position of the accelerator pedal, T r =f(α), the operating conditions of the hydrostatic transmission dual-motor rear-drive vehicle are divided into: low-speed working cond...
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