Method for controlling gear engaging and gear shifting of double-clutch transmission and hydraulic control system

A dual-clutch and transmission technology, applied in transmission control, components with teeth, gear transmission, etc., can solve problems such as long gear shift time, affecting vehicle performance, and shifting impact, and reduce mechanical impact and noise. , Improve NVH performance, accurately reduce the effect of fork movement speed

Active Publication Date: 2016-01-06
SAIC MOTOR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the gear shifting control process, if the shifting force is too large and the shifting fork moves too fast, it will generate shifting impact and noise; if the shifting force is too small, the shifting

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  • Method for controlling gear engaging and gear shifting of double-clutch transmission and hydraulic control system
  • Method for controlling gear engaging and gear shifting of double-clutch transmission and hydraulic control system
  • Method for controlling gear engaging and gear shifting of double-clutch transmission and hydraulic control system

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[0064] In order to make the objectives and features and effects of the present invention more comprehensible, specific implementations of the present invention will be described in detail below with reference to the accompanying drawings.

[0065] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, so the present invention is not limited by the specific embodiments disclosed below.

[0066] Automobile transmissions often have a hydraulic control system; according to the running state of the vehicle, the hydraulic control system can be selectively operated to change the power. The above-mentioned hydraulic control system can be developed by automobile manufacturers.

[0067] The hydraulic control system S1 provided first in this application can be referred to figure 1 , There are four valves, four gear cylinders y1, y2, ...

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Abstract

The invention relates to a method for controlling gear engaging and gear shifting of a double-clutch transmission and a hydraulic control system. The method for controlling gear engaging of a shifting fork of the double-clutch transmission comprises the step of determining a target gear, and the step of simultaneously applying forward gear shifting force and reverse gear shifting force to the shifting fork according to the target gear so as to move the shifting fork to achieve gear engaging; the forward gear shifting force is larger than the reverse gear shifting force. Through the method for controlling gear engaging and gear shifting of the double-clutch transmission and the hydraulic control system, the moving speed of the shifting fork of the double-clutch transmission can be accurately controlled in the gear engaging process, and the noise, vibration and harshness (NVH) performance of a vehicle is improved remarkably.

Description

technical field [0001] The invention relates to a dual-clutch transmission, in particular to a method for controlling shifting fork of the dual-clutch transmission, a method for controlling shifting of the dual-clutch transmission, and a hydraulic control system for the dual-clutch transmission. Background technique [0002] The dual clutch transmission is a complex system in which electromechanical hydraulic systems work together. In the control system of dual-clutch automatic transmission, the control accuracy of the shift fork has a significant impact on the vehicle's power and NVH (Noise, Vibration and Harshness) performance. During the gear shifting control process, if the shifting force is too large and the shifting fork moves too fast, it will generate shifting impact and noise; if the shifting force is too small, the shifting fork moving speed is too slow, resulting in too long shifting time , Delaying the timing of up and down gears, thus affecting the performance ...

Claims

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Application Information

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IPC IPC(8): F16H61/40
CPCF16H3/006
Inventor 周宇星曾艾孙贤安张东波贺军
Owner SAIC MOTOR
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