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Method for controlling forced downshift function of automatic transmission

An automatic transmission, kick-down technology, applied in transmission control, components with teeth, belts/chains/gears, etc., to reduce design and material costs, improve acceleration performance, and shorten shift time.

Pending Publication Date: 2022-03-04
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above, the present invention aims to provide a method for controlling the kickdown function of an automatic transmission to solve the deficiencies of the existing kick down function

Method used

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  • Method for controlling forced downshift function of automatic transmission

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0030] The present invention proposes an embodiment of an automatic transmission kick-down function control method, specifically, as figure 1 shown, including:

[0031] Step S1, real-time monitoring of the driver's stepping on the accelerator while the vehicle is running;

[0032] Step S2, when it is detected that the driver accelerates by stepping on the accelerator, the rate of change signal of the accelerator opening, the accelerator opening signal and the brake pedal opening signal are acquired;

[0033] Step S3, when th...

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Abstract

The invention discloses a forced downshift function control method for an automatic transmission, and the main design concept of the method is that kick down switch hardware is abandoned and replaced by an accelerator opening signal, an accelerator opening change rate signal, a brake pedal opening signal and the like which are triggered by a driver during driving, and the kick down function is realized through a preset condition judgment strategy. According to the method, the hardware design and material cost of the accelerator pedal can be reduced, meanwhile, after the kick down function is triggered, the gear shifting point and the gear shifting time which influence the acceleration performance are independently controlled, and the better acceleration performance is achieved.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a method for controlling the forced downshift function of an automatic transmission. Background technique [0002] Kick down is a driving method. When a car with automatic transmission is running, if the driver quickly steps on the accelerator to the end, the automatic transmission will take downshifts, thereby quickly increasing the engine speed and torque, and increasing the power of the vehicle to respond to the driver. The need for rapid acceleration. This is because the automatic transmission is designed to adjust the gear according to the load of the engine and the depth of the throttle. When the vehicle is climbing a slope or needs rapid acceleration, the driver will step on the accelerator deeply. At this time, due to insufficient engine output torque, the automatic transmission will automatically reduce one or more gears to increase the engine speed and quickly increase t...

Claims

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Application Information

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IPC IPC(8): F16H61/02F16H59/24F16H59/54
CPCF16H61/0246F16H59/24F16H59/54
Inventor 罗贤虎卞雷峰史力铭温敏徐洪伟
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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