A control method and system for gear shifting of a gearbox

Abstract

The invention discloses a control method for gear shifting of a gearbox, comprising: obtaining the current accelerator pedal speed and actual accelerator opening of a target vehicle; adjusting the actual accelerator pedal opening to a virtual accelerator pedal according to the current accelerator pedal speed degree, wherein, the virtual throttle opening is the first virtual throttle opening or the second virtual throttle opening; according to the virtual throttle opening, determine the target gear of the gearbox in the target vehicle; The tank is adjusted from the current gear to the target gear. In the above-mentioned control method, the gearbox shifting is performed based on the actual throttle opening instead of the virtual throttle opening. Using the virtual throttle opening to perform gearbox shifting reduces the probability of continuous downshifts. It avoids the problem of frequent shifting of gears, causing the transmission system to be in a state of power interruption, which will cause the driver to continue to step on the accelerator without the feeling of accelerating the vehicle.

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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