Gear engaging control method for dual-clutch automatic transmission with synchronizer

A technology of automatic transmission and double clutch, applied in the direction of transmission control, elements with teeth, belt/chain/gear, etc., can solve the problem of not considering the moving speed of the shift fork, etc., to ensure the success rate and avoid changing The effect of blocking shock and noise

Active Publication Date: 2016-08-10
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only considers the influence of the position of the shift fork on the shifting force, and does not consider the factor of the moving speed of the shift fork, which cannot avoid the shifting speed caused by the shifting fork moving too fast during the engagement phase. Impact, noise and other issues

Method used

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  • Gear engaging control method for dual-clutch automatic transmission with synchronizer
  • Gear engaging control method for dual-clutch automatic transmission with synchronizer

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Embodiment Construction

[0041] specific implementation plan

[0042] The specific embodiment of the patent of the present invention is described in detail below in conjunction with accompanying drawing:

[0043] The present invention adopts a double-clutch automatic transmission with a hydraulic actuator, and the hydraulic shift actuator realizes the shifting action through a shift solenoid valve 1, a shift solenoid valve 2, a shift multi-way valve 1, and a shift multi-way valve 2 The control of the shift solenoid valve 1 and 2 is connected with the shift multi-way valve 1 and 2, and the shift multi-way valve 1 and 2 is connected with 4 shift forks, and the system has 4 shift forks Fork position sensor, 1 oil temperature sensor. Such as figure 1As shown, taking the 2nd gear as an example, first select and control the shift fork where the 2nd gear is located according to the 2 shift multi-way valves, and then open the shift solenoid valve 1, and the shift fork moves to the direction of the 2nd gear...

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Abstract

The invention provides a gear engaging control method for a dual-clutch automatic transmission with a synchronizer. According to the method, gear shifting is divided into two stages from synchronization to engagement, i.e., the gear engaging stage and the engaging stage. A closed-loop control mode is provided, smooth engaging of a gear sleeve and a connection gear is achieved by means of the control method that positive gear shifting force is controlled through a curve path mode and negative acting force is regulated in real time according to the position of a gear shifting fork and the moving speed of the gear shifting fork, and therefore gear shifting impact is reduced.

Description

technical field [0001] The invention belongs to the shift control technology of a dual-clutch automatic transmission, in particular to the control of the shifting force during the shifting process of a hydraulically controlled dual-clutch automatic transmission with a synchronizer. Background technique [0002] In the gearing process of the hydraulically controlled dual-clutch automatic transmission with synchronizer, the shift fork is first controlled by the hydraulic actuator to push the gear sleeve to the synchronous position. After the synchronization of the input shaft speed and the output shaft speed is completed, the shift fork continues to push The gear sleeve moves close to the engaging teeth, and finally the gear sleeve and the engaging teeth are completely meshed together to realize the gear shifting process. During the entire shifting process, the key is to realize the speed synchronization at the synchronous position and the gear sleeve to move to the engaging t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/34F16H63/30
CPCF16H61/34F16H63/3069
Inventor 熊杰宁甲奎曲白雪马岩张广辉
Owner CHINA FIRST AUTOMOBILE
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