Gear shifting control method and system of automatic gearbox and vehicle

A technology of automatic transmission and control method, which is applied in the direction of transmission control, toothed components, belt/chain/gear, etc., which can solve problems such as customer complaints and shifting impact, and achieve the elimination of frustration and smooth shifting , Solve the effect of shifting shock

Active Publication Date: 2015-05-20
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the difference in manufacturing tolerances of automatic transmissions, it often occurs that the shift control pressure calibrated by the software does not match the hardware specifications of the automatic transmission, resulting in a shocking feeling when shifting gears and causing customer complaints

Method used

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  • Gear shifting control method and system of automatic gearbox and vehicle
  • Gear shifting control method and system of automatic gearbox and vehicle
  • Gear shifting control method and system of automatic gearbox and vehicle

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Embodiment Construction

[0028] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] figure 1 It is a flowchart of a shift control method of an automatic transmission according to an embodiment of the present invention. like figure 1 As shown, the shift control method of an automatic transmission according to an embodiment of the present invention includes the following steps:

[0031] Step S101: When the automatic transmission is controlled by the initial shift control pressure to upshift, detect the actual time T1 elapsed from the start of the upshift to the decrease of the turbine speed to the preset speed. In one embodiment of the present invention, the preset rotation speed is but not limited to: 50rmp.

[0032] Ideally, the initial shift control pressure...

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Abstract

The invention provides a gear shifting control method and system of an automatic gearbox and a vehicle. The method comprises the steps that when up-shift of the automatic gearbox is controlled through initial gear shifting control pressure, the actual time T1 from the up-shift starting time to the time when the rotating speed of a turbine is reduced by the preset rotating speed is detected; the T1 is compared with the standard time T2 from the up-shift starting time of the automatic gearbox to the time when the rotating speed of the turbine is reduced by the preset rotating speed; if the difference value of the T1 and the T2 exceeds an error allowance range, the initial gear shifting control force is adjusted according to the difference value of the T1 and the T2, wherein the larger the difference value, the larger the adjusted gear shifting control pressure is. By means of the gear shifting control method of the automatic gearbox, the gear shifting impact can be lowered or avoided, gear shifting can be smoother, the abruptness occurring in the gear shift process can be reduced and even eliminated, and the riding comfort is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a shift control method, system and vehicle of an automatic transmission. Background technique [0002] At present, due to differences in manufacturing tolerances of automatic transmissions, the calibrated shift control pressure in vehicles is a standard value, for example, obtained from an automatic transmission with a tolerance in the middle position. Therefore, due to differences in manufacturing tolerances of automatic transmissions, it often occurs that the shift control pressure calibrated by the software does not match the hardware specifications of the automatic transmission, resulting in a shocking feeling when shifting gears and causing customer complaints. Contents of the invention [0003] In view of this, the present invention aims to propose a shift control method for an automatic transmission, which can reduce or avoid shift shocks, make shifting smoother, red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/04
CPCF16H61/0437
Inventor 何长胜张占春郭小雷宣华康树利刘晓龙陶隆棋李孝军郑刘正李乾坤林鑫任向飞
Owner GREAT WALL MOTOR CO LTD
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