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Gearbox control unit and shifting fork advance gear engagement method thereof

A gearbox control and control unit technology, applied in the direction of transmission control, components with teeth, belts/chains/gears, etc., to reduce the time of shifting operations, prolong service life, and avoid damage

Active Publication Date: 2017-07-07
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the embodiment of the present invention is how to eliminate the vibration and noise caused by the knocking between the gears of the non-loaded gear shaft system, and improve the driving comfort

Method used

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  • Gearbox control unit and shifting fork advance gear engagement method thereof
  • Gearbox control unit and shifting fork advance gear engagement method thereof
  • Gearbox control unit and shifting fork advance gear engagement method thereof

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Embodiment Construction

[0034] In order to solve the above-mentioned problems existing in the prior art, the technical solution adopted in the embodiment of the present invention prohibits the execution of the pre-engagement operation when the engine speed is in the speed range that easily causes the gear knocking of the non-loaded gear shafting, which can eliminate the Vibration and noise caused by gear knocking caused by pre-engaging gears can improve driving comfort.

[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] figure 1 A flow chart of a method for pre-engaging a shift fork in an embodiment of the present invention is shown. Such as figure 1 The shown shift fork pre-engagement method may include:

[0037] Step S101: When it is determined that the vehicle is in the manual driving mode, acquire...

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PUM

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Abstract

The invention provides a gearbox control unit and a shifting fork advance gear engagement method of the gearbox control unit. The shifting fork advance gear engagement method comprises the steps that when the situation that a vehicle is located in a manual driving mode is determined, information of the rotating speed of an engine is acquired; and when the situation that the rotating speed of the engine is located between a first rotating speed and a second rotating speed is determined, operation of advance gear engagement of a shifting fork is forbidden, wherein the first rotating speed is the minimum rotating speed formed when gear rattles can be caused by gear engagement of the shifting fork, and the second rotating speed is the maximum rotating speed formed when gear rattles can be caused by gear engagement of the shifting fork. By the adoption of the scheme, chattering and noise caused by rattles between gears of a non-bearing gear shaft system can be eliminated, and the driving comfort is improved.

Description

technical field [0001] The invention belongs to the technical field of automobiles, in particular to a transmission control unit and a shift fork pre-engagement method thereof. Background technique [0002] The basic function of a car's drive train is to transfer the power generated by the car's engine to the wheels. During the development of automobile transmission system, automatic transmission has always been the goal pursued by people. With the wide application of computer technology in the field of automobiles, automatic transmission technology has developed rapidly. Today, when cars are becoming more and more popular, the application of automatic transmissions is more important. Dual-clutch automatic transmission is a new generation of automatic transmission. It inherits the advantages of manual transmission, such as high transmission efficiency, compact structure, light weight, and low price. It has excellent starting and shifting quality, and has a good developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/36
CPCF16H59/36F16H2059/366
Inventor 孙贤安王小军焦伟边淑伟马春狮冯巍陈亮
Owner SAIC MOTOR
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