Control method for restraining gear shifting circulation of gearbox

Abstract

The invention provides a control method for restraining gear shifting circulation of a gearbox, and relates to the technical field of gearbox control. When the gearbox is in the automatic gear shifting mode, the control method is adopted for beginning to count the number of times of gear shifting circulation after gear shifting circulation of the gearbox begins, and when the counting numerical value reaches the initial set threshold value, the control method is adopted for beginning restraining up-shifting of the gearbox. The control method can realize the restraining effect after the gear shifting circulation problem occurs and can be matched with prevention before gear shifting circulation, and therefore the gear shifting circulation problem can be completely solved, vehicles can adapt to complicated driving conditions, and the driving feelings of drivers can be improved.

Description

technical field [0001] The invention relates to the technical field of gearbox control, in particular to a control method for suppressing shift cycle of a gearbox. Background technique [0002] When driving a vehicle equipped with an automatic transmission, the external environment of the vehicle changes, such as the vehicle entering a plateau environment, mountainous roads and other special road conditions, which may cause the following shift cycle problems in the transmission: After the transmission is upshifted, the vehicle power is insufficient- --Vehicle speed drops---the driver increases the accelerator to maintain the vehicle speed---the gearbox automatically downshifts---the power increases after the downshift, and the vehicle speed rises---the driver reduces the accelerator to maintain the vehicle speed---the gearbox Automatic upshift --- after the upshift, the vehicle's power is insufficient again --- the speed of the vehicle drops --- the driver increases the acce...

AI Technical Summary

Problems solved by technology

[0002] When driving a vehicle equipped with an automatic transmission, the external environment of the vehicle changes, such as the vehicle entering a plateau environment, mountainous roads and other special road conditions, which may cause the following shift cycle problems in the transmission: After the transmission is upshifted, the vehicle power is insufficient- --Vehicle speed drops---the driver increases the accelerator to maintain the vehicle speed---the gearbox automatically downshifts---the power increases after the downshift, and the vehicle speed rises---the driver reduces the accelerator to maintain the vehicle speed---the gearbox Automatic upshift --- after the upshift, the vehicle's power is insufficient again --- the speed of the vehicle drops --- the driver increases the accelerator again to maintain the speed of the vehicle..., so that the up-down gear of the gearbox will bring the power of the vehicle to change, and drive with the change of power The driver frequently operates the accelerator to maintain the current speed, and frequent accelerator operations may lead to frequent transmission up and down

[0003] The frequent shifting cycle of the gearbox will not only bring a bad driving experience to the driver, because the gearbox frequently shifts up and down, the vehicle power changes frequently, and the driver's power experience also changes frequently, making it difficult for the driver to maintain the current speed , and frequent cycle shifts will also affect the durability of the gearbox

[0004] Existing automatic transmission control systems often use special shift modes to actively prevent shift cycle problems, such as uphill mode, plateau mode, cruise mode, etc. posterior inhibitory control

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