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A gear shifting method for a vehicle, a gear shifting system, and a vehicle

A gear shifting method and vehicle technology, applied in the gear shifting method, gear shifting system and vehicle field of vehicles, capable of solving the problems of synchronizer gear sleeves and coupling tooth surfaces not fully synchronized, abnormal knocking noise, and short synchronization time, etc. , to achieve the effect of facilitating later software management, increasing costs, and eliminating noise

Active Publication Date: 2021-10-15
NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when the existing vehicle shifts from a high gear to a resisting position, there is a "cough" sound in the car. When in gear, the speed difference between the synchronizer gear sleeve and the coupling gear is too large, and the synchronization time is short, which may easily cause the synchronizer gear sleeve and the coupling gear tooth surface to not be completely synchronized. The dynamic combination teeth collide with the tooth surface of the combination teeth, resulting in abnormal knocking noise

Method used

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  • A gear shifting method for a vehicle, a gear shifting system, and a vehicle
  • A gear shifting method for a vehicle, a gear shifting system, and a vehicle
  • A gear shifting method for a vehicle, a gear shifting system, and a vehicle

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Embodiment Construction

[0043] figure 1 is a flowchart of a gear shifting method for a vehicle according to an embodiment of the present invention. Such as figure 1 As shown, the present invention provides a kind of shifting method for vehicle, and vehicle comprises dual-clutch gearbox, and described shifting method is used for reducing the noise that vehicle produces when downshifting from high gear to low gear, and its general includes the following steps:

[0044] S10: Real-time acquisition of the throttle opening and speed of the vehicle;

[0045] S20: According to the accelerator opening and speed, it is judged whether there is a demand for cross-shift downshift of the vehicle;

[0046] S30: If yes, select the synchronous force of the transmission of the vehicle according to the speed of the vehicle at the previous preset time and the speed at the current time;

[0047] S40: According to the synchronizing force, the target advancing force of the synchronizer in the transmission is obtained. ...

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Abstract

The invention provides a gear shifting method for a vehicle, a gear shifting system and the vehicle, and relates to the technical field of vehicle transmissions. The gear shifting method includes: collecting the accelerator opening and speed of the vehicle in real time; judging whether the vehicle has a cross-shift downshift demand according to the accelerator opening and the speed; Set the speed at the moment and the speed at the current moment to select the synchronous force of the transmission of the vehicle; obtain the target advance force of the synchronizer in the transmission according to the synchronous force. The shifting method provided by the invention can eliminate the noise when the vehicle shifts from a high gear to a low gear.

Description

technical field [0001] The invention relates to the technical field of vehicle transmissions, in particular to a gear shifting method for a vehicle, a gear shifting system and a vehicle. Background technique [0002] With the improvement of people's quality of life, the requirements for vehicle gear shifting are becoming more and more stringent. For example, the shifting time should not be too long, the shifting should not be frustrating, and abnormal noise should not be generated. At present, when the existing vehicle shifts from a high gear to a resisting position, there is a "cough" sound in the car. When in gear, the speed difference between the synchronizer gear sleeve and the coupling gear is too large, and the synchronization time is short, which may easily cause the synchronizer gear sleeve and the coupling gear tooth surface to not be completely synchronized. The moving coupling teeth collide with the tooth surface of the coupling teeth, resulting in abnormal knock...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/02F16H61/04F16H61/32F16H59/24F16H59/44
CPCF16H59/24F16H59/44F16H61/02F16H61/0403F16H61/32F16H2061/0096
Inventor 吴旺火胡军峰张燕徐永江刘杰
Owner NINGBO SHANGZHONGXIA AUTOMATIC TRANSMISSION
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