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Method for controlling AMT (automatic transmission) clutch brake

A technology of brake control and control method, applied in clutch, transmission control, components with teeth, etc., can solve the problem of AMT heavy brake engine stall and other problems, and achieve the effect of solving the problem of engine stall

Inactive Publication Date: 2011-10-05
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of AMT clutch brake control method, solve the problem of AMT heavy brake engine flameout

Method used

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  • Method for controlling AMT (automatic transmission) clutch brake
  • Method for controlling AMT (automatic transmission) clutch brake
  • Method for controlling AMT (automatic transmission) clutch brake

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Experimental program
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Embodiment Construction

[0011] In order to better understand the control logic scheme and specific implementation of the present invention, reference should be made to the following detailed description in conjunction with the accompanying drawings.

[0012] figure 1 It is a logic diagram for the clutch to be controlled according to the severity of the brake. The severity of the brake is represented by acceleration (the acceleration is a positive value when accelerating, and the acceleration is a negative value when decelerating):

[0013] 1) When the acceleration is less than -1 m / s 2 When , it means that the brake is heavy, enter the heavy brake control method, and the clutch is controlled according to the engine speed. That is, in order to prevent the engine from stalling, when the engine speed drops to the set value, the clutch starts to disengage.

[0014] 2) When the acceleration is greater than -1 m / s 2 , it means that the brake is relatively light, and enters the conventional control met...

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Abstract

The invention discloses a method for controlling an AMT (automatic transmission) clutch brake. Two parameters of brake signal and rotation speed of a motor are added to control a clutch for the method; when in heavy brake, the clutch is separated when the rotation speed of the motor is higher; when in light brake or no touch on the brake, the clutch is separated when the rotation speed of the motor is lower, namely the heavier the brake is, the earlier the brake is separated; the lighter the brake is, the latter the brake is separated; and the rotation speed of the motor is in proportion to weight degree of brake when the clutch is separated. According to the invention, through setting different rotation speeds of the motor, the clutch can be controlled according to the weight of the brake, thus the issue of stalling of engine caused by the over slow separation of the clutch in the heavy brake is solved, and simultaneously the control of the clutch in no touch on the brake is not influenced.

Description

technical field [0001] The invention belongs to the technical field of automobile AMT (Automatic Mechanical Transmission, electronically controlled mechanical automatic transmission) control system, and specifically relates to a clutch control method when a driver heavily steps on the brake. technical background [0002] The AMT automatic transmission car is equipped with a clutch and a gear selection and shifting actuator on the manual transmission, and performs automatic gear selection and shifting actions according to the instructions of the TCU controller. Usually, when the driver brakes, the clutch is judged according to the speed of the vehicle and the opening of the accelerator. When the gear shifting requirement is met, the clutch is disengaged to interrupt the engine power and prevent the engine from stalling. The control method of the clutch is the same when the driver brakes and does not brake. [0003] Usually, when the driver steps on the brake lightly, the clu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H59/74F16H59/54F16D48/00
Inventor 姜凤翔叶腾平
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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