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A method for controlling gear engagement of a wet dual-clutch transmission

A wet dual-clutch, transmission technology, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as poor target followability, poor control accuracy, and instability, and achieve simplified gear Effects of Bit Engagement Actions

Active Publication Date: 2016-05-04
CHONGQING TSINGSHAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the control accuracy is poor or the control response is slow, it will easily lead to instability or even errors due to poor target following

Method used

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  • A method for controlling gear engagement of a wet dual-clutch transmission
  • A method for controlling gear engagement of a wet dual-clutch transmission
  • A method for controlling gear engagement of a wet dual-clutch transmission

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Embodiment Construction

[0037] The features and advantages of the present invention have been described in the above text, and the present invention can be better understood after reading the following description and the accompanying drawings.

[0038] The present invention is described in detail below according to accompanying drawing:

[0039] The DCT is controlled by the control method shown, see figure 1 In the schematic diagram above, the dual-clutch gearbox 101 includes two sets of clutch assemblies, which are shown on 102 and 103 . What 104 shows is the odd-numbered input shaft, and what 105 shows is the even-numbered input shaft. The odd and even two shafts are parallel, 106 is an intermediate shaft, 107 is a reverse gear intermediate shaft, and a plurality of synchronizers are shown in 108, 109 and 110.

[0040] The dual-clutch gearbox 101 transmits the torque from the engine, through selectable gear ratios to the drive shaft, and finally to the wheels. The transmission route of the dual-c...

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PUM

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Abstract

The invention provides a method of controlling position engagement for a wet dual-clutch transmission. The method includes controlling acting force upon an actuator to provide an initial target speed and reaching a target position in required time by changing the target speed. According to a control scheme, required shifting force is determined according to temperature, even clutching speed, odd clutching speed and clutch state of the current transmission; the shifting force varies only when the speed exceeds a predetermined limit; and if the limit is exceeded, an adapting function is triggered and uses a former value as input and stored as a new value. The method has the advantage that high-quality shifting, high stability and low cost are achieved through open-loop control and adaptive pressure adjustment.

Description

technical field [0001] The invention relates to a dual-clutch transmission control technology, in particular to a control method for gear engagement of a dual-clutch transmission. Background technique [0002] The method for controlling the gear engagement of the dual-clutch gearbox is as follows: the input shaft where the gear to be engaged is located is connected to the engine through the opening of the clutch. Gear engagement applies force to the shift mechanism by controlling the drive mechanism, which in turn transmits force to the synchronizers. [0003] The layout of the dual-clutch gearbox is disclosed in US Patent No. 2,658,405, which mainly describes a gearbox with optional gear positions (dual-clutch gearbox). The dual-clutch gearbox has a set of even-numbered transmission units, including even-numbered input shafts, even-numbered clutches, and a set of even-numbered gears; there is a set of odd-numbered transmission units, including odd-numbered input shafts, od...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H59/14F16H59/36F16H59/50F16H59/48F16H61/688
Inventor 张德旺斯红路孙芬徐姗刘增玥
Owner CHONGQING TSINGSHAN IND
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