Gearbox gear shifting control method and system

Abstract

The invention discloses a gearbox gear shifting control method. The gearbox gear shifting control method comprises the following steps that 1, the current accelerator stepping speed and the actual accelerator opening degree of a target vehicle are obtained; 2, according to the current accelerator stepping speed, the actual accelerator opening degree is adjusted to be the virtual accelerator opening degree, and the virtual accelerator opening degree serves as the first virtual accelerator opening degree or the second virtual accelerator opening degree; 3, a target gear of a gearbox in the target vehicle is determined according to the virtual accelerator opening degree; and 4, the gearbox is adjusted to the target gear from the current gear. According to the gearbox gear shifting control method, gearbox gear shifting according to the actual accelerator opening degree is changed into gearbox gear shifting according to the virtual accelerator opening degree, the probability of continuous downshifting is reduced due to the fact that gearbox gear shifting is conducted according to the virtual accelerator opening degree, the situation that a transmission system is in a power interruptionstate due to frequent gear shifting is avoided, and the problem that a driver continuously steps on an accelerator and the vehicle does not have an acceleration feeling is solved.

Description

technical field [0001] The invention relates to the technical field of automobile transmission control, in particular to a control method and system for gear shifting of a transmission. Background technique [0002] For the shift control of automatic transmission, whether it is a traditional internal combustion engine vehicle equipped with automatic transmission AT (automatic transmission), electromechanical automatic transmission AMT (automated mechanical transmission), dual clutch automatic transmission DCT (Dual Clutch Transmission), or a hybrid For automobiles, when calculating the target gear position of the gearbox, the two-parameter algorithm of accelerator opening and vehicle speed is mainly used to obtain the actual accelerator opening of the accelerator. The vehicle speed determines the target gear, and shifts the current gear of the transmission to the target gear. [0003] The inventor conducted research on the gear switching process of the existing gearbox and ...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a control method for gear shifting of a gearbox, which is used to solve the problem that there are other gears in the interval between the current gear and the target gear in the process of switching the gear box according to the actual throttle opening in the prior art. When shifting gears, the gears will be switched frequently, causing the transmission system to be in a state of power interruption, which will cause the problem that the driver continues to step on the accelerator and the vehicle does not feel accelerated.

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