Power motor auxiliary gear-shifting control system and control method thereof

Abstract

The invention discloses a power motor auxiliary gear-shifting control system and a control method thereof. The power motor auxiliary gear-shifting control system comprises a vehicle control unit, a throttle opening sensor, a motor, a transmission, a gear-selecting and gear-shifting execution device and an output shaft speed sensor, wherein the throttle opening sensor is connected with the vehicle control unit to transmit throttle opening information to the vehicle control unit, the motor is connected with the vehicle control unit and reaches a target speed according to the instruction action of the vehicle control unit after the vehicle control unit receives the throttle opening information, the gear-selecting and gear-shifting execution device is respectively connected with the vehicle control unit and the transmission and indicates gear-selecting and gear-shifting action of the transmission according to the instruction of the vehicle control unit, and the output shaft speed sensor is connected with the vehicle control unit to feed back acquired transmission output shaft speed information to the vehicle control unit. According to the power motor auxiliary gear-shifting control system and the control method thereof, gear-shifting quality can be improved, and the service life of the transmission is prolonged.

Description

technical field [0001] The present invention relates to the technical field of power motor shift control, in particular to a power motor auxiliary shift control system and a control method thereof. Background technique [0002] In the technical field of modern transportation, the engine of traditional models is mechanically coupled with the gearbox through the clutch. During the gear shifting process, the pre-clutch master and slave discs rotate at different speeds. The gearbox synchronizer wears too fast, which seriously affects the shifting quality and the service life of the clutch and gearbox. In recent years, for hybrid or pure electric vehicles, the motor has become another power source besides the engine. However, since the motor increases the moment of inertia at the input end of the transmission, if the engine, clutch, motor and multi-speed gearbox are not properly coordinated and controlled, It will cause problems such as long power interruption time of shifting, ...

AI Technical Summary

Problems solved by technology

[0002] In the technical field of modern transportation, the engine of traditional models is mechanically coupled with the gearbox through the clutch. During the gear shifting process, the pre-clutch master and slave discs rotate at different speeds. The gearbox synchronizer wears out too quickly, which seriously affects the quality of gear shifting and the service life of clutches and gearboxes

In recent years, for hybrid or pure electric vehicles, the motor has become another power source besides the engine. However, since the motor increases the moment of inertia at the input end of the transmission, if the engine, clutch, motor and multi-speed gearbox are not properly coordinated and controlled, It will cause problems such as long interruption time of shifting power, shifting shock, serious wear of gearbox and clutch, etc., which seriously affects the quality of shifting

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