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Adjusting method and device for gear shifting rule of automatic gearbox

A technology of automatic transmission and shifting schedule, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as insufficient power and excessive power

Active Publication Date: 2020-04-17
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fixed shift schedule is difficult to meet the above requirements when the working conditions are quite different, and it is prone to situations such as insufficient power or excessive power, which cannot meet the needs of the driver under different driving conditions.

Method used

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  • Adjusting method and device for gear shifting rule of automatic gearbox
  • Adjusting method and device for gear shifting rule of automatic gearbox
  • Adjusting method and device for gear shifting rule of automatic gearbox

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] In order to facilitate the understanding of the adjustment method provided by the embodiment of this application, some terms involved in this application will be briefly explained first:

[0049] Vehicle gears and shifting. The engine and drive wheels of the vehicle are connected through a gearbox, the output shaft of the engine is connected to the input shaft of the gearbox, the output shaft of the gearbox is used to drive the drive wheels, and the spe...

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Abstract

The invention provides an adjusting method and device for gear shifting rule of an automatic gearbox. The adjusting method comprises the steps that from the current moment, adjusting coefficients of Nsampling moments before the current moment are sequentially obtained according to the time sequence, wherein N is a preset positive integer; the adjusting coefficient of each sampling moment is determined according to the actual acceleration of the sampling moment and the accelerator opening degree of the sampling moment; and finally, the adjusted gear shifting rule is obtained through calculation according to the accelerator opening degree of the current moment, the mean value of the adjusting coefficients of the N sampling moments and the preset gear shifting rule, wherein the adjusted gearshifting rule serves as the basis for controlling the automatic gearbox. The acceleration of a vehicle under the specific accelerator opening degree can reflect the load condition of the vehicle. According to the scheme, calculation is conducted by combining the recent acceleration of the vehicle, the accelerator opening degree and the preset gear shifting rule, and therefore the adjusted gear shifting rule matched with the current load of the vehicle is provided, and the requirements of a driver are met.

Description

technical field [0001] The present application relates to the technical field of automatic transmissions, in particular to a method and device for adjusting the shift schedule of automatic transmissions. Background technique [0002] The automatic transmission is located between the engine of the vehicle and the driving wheels, and is an important component for realizing automatic gear shifting of the car. The current automatic transmission configuration has a fixed shift schedule. The shift schedule is used to indicate under which vehicle conditions the automatic transmission should shift gears and how to switch. According to the shift schedule and current vehicle conditions, the automatic transmission can change its own The transmission ratio is adjusted to different gears. [0003] The problem with this type of automatic transmission is that the actual load conditions of the vehicle are complex and changeable, and the shift schedules required by the driver are also diffe...

Claims

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Application Information

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IPC IPC(8): F16H59/48F16H59/50
CPCF16H59/48F16H59/50
Inventor 孙立鹏宁廷会马明霞王朝辉桂经良
Owner WEICHAI POWER CO LTD
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