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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above, the present invention aims to provide a method for controlling the kickd

Method used

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  • Method for controlling forced downshift function of automatic transmission

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Example Embodiment

[0029] Examples of the embodiments of the present invention will be described in detail below, and examples of embodiments are shown in the drawings, in which the same or similar reference numerals are indicated by the same or similar elements or elements having the same or similar functions. The following is exemplary, and is intended to be construed as limiting the invention.

[0030] The present invention proposes an embodiment of an automatic transmission to force a defensive function control method, specifically, such as figure 1 As shown, including:

[0031] Step S1, monitor the driver stepping on the throttle operation in real time in the vehicle driving;

[0032] Step S2, when monitoring the driver accelerates by stepping on the throttle, the throttle opening degree signal, and the brake pedal opening degree signal are obtained;

[0033] Step S3, when the throttle opening degree change rate signal, the throttle opening signal, and the brake pedal opening degree signal sati...

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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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