Gear shifting control method and vehicle

Abstract

The invention discloses a gear shifting control method and a vehicle, and the method comprises the steps that a transmission control unit calculates a torque reduction target torque according to first accelerator information and a gear shifting torque initial value of an engine, generates an engine torque reduction request, and sends the engine torque reduction request and the torque reduction target torque to a CAN bus; an electronic control unit controls the engine unloading torque according to the torque reduction target torque in response to the engine torque reduction request; a vehicle control unit responds to the engine torque reduction request, the motor compensation torque is calculated and sent to the motor controller through the CAN bus, and the motor controller controls the motor to increase the torque according to the motor compensation torque; and a transmission control unit adjusts the separation position of a clutch according to the torque reduction target torque until the clutch is separated to the maximum separation position, and a gear shifting mechanism is controlled to be switched to the target gear. According to the gear shifting control method and the vehicle, the gear shifting smoothness can be improved, gear shifting noise and pause feeling are reduced, and comfort is improved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a gear shift control method and a vehicle. Background technique [0002] For the shift control of hybrid vehicles, some schemes disclose the calculation of motor compensation torque, and use electric drive torque as power compensation during AMT shifting to solve the problems of long shifting time and shifting frustration during AMT shifting . However, if the motor compensation torque is only calculated according to the difference between the engine target torque and the actual torque, the obtained motor compensation torque may be too large or too small, resulting in a large difference between the actual output torque and the total demand torque, or easily causing the When shifting gears, the engine rises rapidly, the engine produces noise, or the vehicle has obvious deceleration shocks, etc., and the shifting is not smooth enough. Contents of the invention [0003] The pres...

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Problems solved by technology

However, if the motor compensation torque is only calculated according to the difference between the engine target torque and the actual torque, the obtained motor compensation torque may be too large or too small, resulting in a large difference between the actual output torque and the total demand torque, or easily causing the The engine rises rapidly when shifting, the engine produces noise, or the vehicle has obvious deceleration shocks, etc., and the shifting is not smooth enough

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