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Method and device for monitoring the movements of the forks of a robotized gearbox, by relearning

A technology for automatic gearboxes and control devices, applied in the direction of transmission control, elements with teeth, belts/chains/gears, etc., which can solve problems such as wasting time, unusable, and damaging gearboxes

Active Publication Date: 2016-11-09
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] These bad operations gradually damage some parts of the gearbox, which needs to be remedied as soon as possible by bringing the system (such as a vehicle) equipped with this gearbox in after-sales service (such as a garage), which makes the system's Users waste time and make the system unusable for a period of time

Method used

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  • Method and device for monitoring the movements of the forks of a robotized gearbox, by relearning
  • Method and device for monitoring the movements of the forks of a robotized gearbox, by relearning
  • Method and device for monitoring the movements of the forks of a robotized gearbox, by relearning

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Embodiment Construction

[0034] The object of the invention is in particular to provide a control method and an associated control device DC for being able to control the forced movement of at least one shift fork F as An integral part of the automatic transmission BV and is intended to be fitted on the system.

[0035] In the following, as a non-limiting example, the system is considered to be a motor vehicle, such as a car. But the invention is not limited to this type of system. The invention relates in fact to all types of systems including at least automatic gearboxes BV, in particular land vehicles (of whatever type), sea (or river) vehicles and some (optionally industrial) equipment.

[0036] figure 2 A small part of an automatic transmission BV is schematically shown on FIG. 2 , which is here intended to be coupled via a clutch to an internal combustion engine of a vehicle.

[0037] Although in figure 2 The upper part shows that the gearbox BV conventionally comprises, inter alia, at lea...

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Abstract

A device (DC) is tasked with monitoring the movements imposed on at least one fork (F) that forms part of a robotized gearbox (BV) and is able, when translated by an actuator (A), to actuate a synchronizer (SB) associated with pinions contributing to the defining of gear ratios, each imposed movement being defined as a function of at least one measurement taken following the application of two predefined forces to the actuator (A). This device (DC) is designed, in the event of a problem resulting from the actuation of a synchronizer (SB) being detected, to trigger the application of the two predefined forces to an actuator (A) and the taking of at least one other corresponding measurement in order to determine an auxiliary movement, then to determine a difference between the imposed and auxiliary movements that correspond to one another and to associate with each fork (F) a new imposed movement that is dependent on the previous imposed movement thereof and on this determined difference.

Description

technical field [0001] The present invention relates to automatic transmissions fitted to some systems, such as some vehicles, optionally motor vehicles, and more precisely to the control of the position of the shift forks of such a transmission. Background technique [0002] As known to those skilled in the art, an automatic transmission generally includes at least one input shaft, at least one output shaft, at least one drive, at least one synchronizer and at least one shift fork. [0003] Each input shaft and associated output shaft are respectively provided with a fixed gear and an idler gear for collectively defining a variable speed gear train (or speed). [0004] Each drive is responsible for causing movement of at least one idler gear of the output shaft to mesh said at least one idler gear with a fixed gear of the input shaft. [0005] During a phase called synchronization, each synchronizer rotates integrally with an output shaft while being translatable on said o...

Claims

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Application Information

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IPC IPC(8): F16H61/12F16H61/28
CPCF16H61/12F16H59/68F16H61/28F16H2059/6807F16H2061/2823F16H2061/283
Inventor E·舍费尔
Owner PEZHO SITROEN AUTOMOBILS SA
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