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Control system and method for automatic transmission shifting

A technology of automatic transmission and control system, applied in the direction of transmission control, toothed components, belt/chain/gear, etc., which can solve problems such as loud engine noise, car jerk, irritability or aggressive response, etc. Achieve the effect of improving driving comfort and preventing unevenness

Active Publication Date: 2017-01-18
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When, for example, a car's governor is manipulated slowly, e.g. in order to allow the car to coast slowly to a stop, the automatic transmission responds unevenly, such as fidgety or aggressive, with the result that a clearly felt rushing or loud engine noise

Method used

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  • Control system and method for automatic transmission shifting
  • Control system and method for automatic transmission shifting
  • Control system and method for automatic transmission shifting

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 The control system 10 for shifting gears of an automatic transmission 12 of a motor vehicle, in particular downshifting, is briefly shown. Control system 10 includes electronic control unit 14 and governor 16 . The electronic control unit 14 is connected, for example electrically conductively, to the governor 16 and to the automatic transmission 12 in order to transmit measured values ​​of parameters.

[0022] The electronic control unit 14 can detect various parameters, wherein the values ​​of the parameters can be detected directly via sensors connected to the electronic control unit, or can be acquired indirectly, in which case the values ​​can be derived from other information. Here, the parameters may include vehicle speed, the position of the governor 16 and the acceleration of the governor 16 . For example, the speed of the vehicle can be determined with a speed sensor or derived from information such as the rotational speed of the wheels via the elect...

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PUM

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Abstract

The invention relates to a control system (10) for shifting gears of an automatic transmission (12) of an automobile, especially for shifting to a low gear, comprising a governor (16) and an electronic control device (14), wherein, through the electronic control device ( 14) Parameters can be detected, i.e. vehicle speed, governor (16) position and governor (16) acceleration, and through the electronic control unit (14) and by calibrating the detected values ​​of the parameters with prescribed reference values, it can be determined The shifting moment of the automatic transmission (12), especially the shifting moment of changing to a low gear. As a result, greater shift comfort can be achieved. The invention also relates to a corresponding control method for shifting gears of an automatic transmission (12) of an automobile, especially for shifting to a low gear.

Description

technical field [0001] The invention relates to a control system and method for shifting gears of an automatic transmission of an automobile, especially for shifting the automatic transmission to a low gear. Background technique [0002] An automatic transmission is a common type of transmission in which the actuation of the clutches and the shifting of the gears are not carried out by the driver, but for example by means of servomotors or hydraulic systems. During a gear change, exactly as in a conventional transmission, there is an interruption in torque transfer and the shift time is determined by the time of the gear change plus the operating time of the clutch. The driver can select which gear to engage without having to manually engage in the clutch engagement process. [0003] In the case of an automatic transmission, the gear change can be carried out by means of shift curves which are defined as a function of the position of the governor and the speed of the vehicl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H59/44F16H59/48F16H59/74
CPCF16H59/18F16H2059/183F16H59/44F16H61/0213F16H61/68
Inventor M.金泰尔G.贝克尔
Owner GM GLOBAL TECH OPERATIONS LLC