Wet double-clutch automatic transmission torque following control method

Abstract

The invention discloses a wet double-clutch automatic transmission torque following control method. The wet double-clutch automatic transmission torque following control method comprises the steps that initialization control is started when the following conditions are simultaneously satisfied, wherein the conditions include the non-creep state, the non-starting state, the non-shifting state, not-opening of a clutch and the non-fault mode; it is determined whether any one of the following conditions is satisfied, wherein the conditions include the creep state, the starting state, the shiftingstate, clutch opening, entering of the fault mode; if any one of the following conditions is not satisfied, it is determined whether the following torque is not equal to the corrected partial torque of a previous sample or not; if the following torque is not equal to the corrected partial torque of the previous sample, skip control is started; and if the following torque is equal to the correctedpartial torque of the previous sample, maintenance control is started. According to the wet double-clutch automatic transmission torque following control method, through torque following control, according to the actual running condition of a whole vehicle, torque precise control is achieved, and therefore the driving property of the whole vehicle is improved; if the slip frequency is too large, the pressure of the clutch is quickly increased to reduce the slip frequency as quickly as possible, and if the slip frequency is very small, the pressure can be appropriately reduced, and the drivingperformance of the whole vehicle is improved.

Description

Technical field [0001] The invention relates to the field of gearbox control, in particular to a torque following control method for a wet dual-clutch automatic gearbox. Background technique [0002] In the prior art, when the gearbox oil temperature is too high or too low, it is difficult for the slip control to achieve a fast dynamic response. The gearbox oil temperature is too low, the oil is thick, and the pressure rises slowly. If the gearbox oil temperature is too high, the slip friction of the clutch will cause ablation. Therefore, it is a problem that needs to be solved in the prior art to improve the drivability of the vehicle by controlling the torque of the gearbox. Summary of the invention [0003] The purpose of the present invention is to provide a torque following control method for a wet dual-clutch automatic transmission to solve the problems in the prior art and improve the drivability of the entire vehicle. [0004] The present invention provides a torque follow...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when the gearbox oil temperature is too high or too low, it is difficult to achieve fast dynamic response in slip friction control, the gearbox oil temperature is too low, the oil is thick, and the pressure rises slowly

The gearbox oil temperature is too high, and the friction of the clutch will cause ablation

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