Method for recognition of the synchronism position and the end of the synchronism process in an automatic gearbox

A technology of synchronous position and synchronous process, which is applied in the direction of transmission control, components with teeth, mechanical drive clutch, etc., which can solve the problems of expensive and troublesome load current detection

Inactive Publication Date: 2006-06-21
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the detection of the load current is relatively complex and expensive, and in addition only results in the detection of simultaneous position changes in the context of the continuous position detection of the actuator, since it is necessary to know the position of the actuator when the load current rises

Method used

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  • Method for recognition of the synchronism position and the end of the synchronism process in an automatic gearbox
  • Method for recognition of the synchronism position and the end of the synchronism process in an automatic gearbox
  • Method for recognition of the synchronism position and the end of the synchronism process in an automatic gearbox

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Embodiment Construction

[0032] in the attached figure 1 , curves 1 and 2 each represent the shifting process when a synchronous position "far from neutral" occurs, and curves 3 and 4 each represent a shifting process when a synchronous position "close to neutral" occurs. The term "away from neutral" is to be understood here as meaning that the change of the synchronous position determined by the control device is away from the neutral position, and the term "closer to neutral" is correspondingly understood to mean that the determined change of the synchronous position is towards the neutral position.

[0033] As can be seen directly, the shift actuator is depicted first linearly and then decelerated in time towards the synchronous position or synchronous travel, which exerts a blocking effect on the ongoing movement during the synchronous process. This means that the shift actuator is decelerated until it comes to a near standstill at time A, but at this point a force continues to be applied, which a...

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Abstract

The invention relates to a method for detecting the synchronization position and the end of the synchronization process of an automatic shifting gearbox with an electric shifting actuator, characterized in that the rotational speed of the shifting actuator is detected and determined as a function of the change in rotational speed The synchronization position and the end of the synchronization process.

Description

technical field [0001] The invention relates to a method for detecting a synchronization position of an automatic transmission and the end of the synchronization process. The invention also relates to a method for shortening the operating time of a shift actuator to reach an end position. Background technique [0002] Shift transmissions for motor vehicles are known in many embodiments. So far, the gearbox is mainly understood as a manual shift gearbox, and the driver of a motor vehicle provided with this gearbox selects a gear and carries out a gear shift process by hand through a shift lever. In addition to manually operated shift gearboxes, automatic shift gearboxes are also known during this period, in which the gear selection and the shifting process of the selected gear are carried out, for example, by means of an actuation provided on the shift gearbox The device is programmed and controlled. [0003] When such an automatic shift transmission is in operation, its c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H63/30F16D23/02F16H59/46F16H61/28F16H61/32
CPCF16H59/46F16H61/32F16H63/304F16H2061/2823F16H2059/462F16H59/68Y10T74/19251Y10T74/2003F16H61/28
Inventor 赖因哈德·贝格尔马丁·福内姆斯特凡·温克尔曼
Owner SCHAEFFLER TECH AG & CO KG
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