Automatic control method for synchronizer

A technology of synchronizer and pressure control, applied in transmission control, components with teeth, belt/chain/gear, etc., can solve the problem that the effect is not very good, the closed-loop synchronizer speed feedback of the synchronizer position is not considered, etc. Achieve the effect of improving shifting quality, optimizing power interruption time, and reducing synchronizer noise

Active Publication Date: 2015-05-27
SAIC MOTOR
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  • Claims
  • Application Information

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Problems solved by technology

Most of the traditional automatic control of synchronizers adopts open-loop pressure control or flow control, without considering the closed-loop position of the synchronizer and the feedback of the speed of the synchronizer. or when there is a deviation in the control of the solenoid valve), the effect is not very good, so a step-by-step synchronizer automatic control method is proposed

Method used

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  • Automatic control method for synchronizer
  • Automatic control method for synchronizer
  • Automatic control method for synchronizer

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Embodiment Construction

[0036] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Fig. 1 shows a schematic diagram of an embodiment of an automatic control method for a synchronizer according to the present invention. As shown in Fig. 1, the step-by-step synchronizer automatic control method adopted by the present invention is as follows: TCU judges the shift command according to the synchronizer position signal, the vehicle demand gear signal, and the transmission oil pressure signal, and The speed and the time of each control stage divide the entire moving process into six controls: synchronizer unblocking, synchronizer front air stroke, synchronizer synchronous sliding, synchronizer rear air travel, synchronizer pressing, and synchronizer in gear. stage, combined with the accelerator pedal signal and transmission oil temperature signal to accurately control the speed control and position control of the synchronizer ...

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Abstract

The invention relates to an automatic control method for a synchronizer. According to the method, gear shifting instructions are determined according to gear shifting signals acquired by a gearbox control unit. The whole synchronizer moving process is completed through six control stages of synchronizer gear releasing, combining of synchronizer with front idle travel, synchronizer sliding abrasion combining, combining of synchronizer with real idle travel, synchronizer compression and synchronizer on gear according to synchronizer speed and time of all control stages. By the aid of the method, the moving control stages of the synchronizer are subdivided, and accordingly, the power failure time during gear shifting is optimized effectively, the synchronizer noise is reduced, the synchronizer hardware abrasion is reduced, and the gear shifting quality is improved.

Description

technical field [0001] The invention belongs to the field of shift control of automobile gearboxes; in particular, the invention relates to an automatic control method of a synchronizer. Background technique [0002] Synchronizer control belongs to the shift control of automobile gearbox, which involves issues such as power interruption time, smoothness of shifting, shifting noise and wear of synchronizer during the shifting process. Most of the traditional automatic control of synchronizers adopts open-loop pressure control or flow control, without considering the closed-loop position of the synchronizer and the feedback of the speed of the synchronizer. Or when there is a deviation in the control of the solenoid valve), the effect is not very good, so a step-by-step synchronizer automatic control method is proposed. Contents of the invention [0003] The problem to be solved by the present invention is to provide an automatic synchronizer control method that can effecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H59/04
CPCF16H61/0204F16H61/0403F16H2302/00
Inventor 马成杰赵沂甘宁邱国贸孙俊
Owner SAIC MOTOR
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