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Method Of Searching For Touch Point Of Clutch

A technology of clutches and contact points, which is applied in the direction of clutches, elements with teeth, transmission control, etc., can solve the problems that the change of contact point characteristics cannot be taken into account, the durability is reduced, and the operability is deteriorated.

Inactive Publication Date: 2014-05-21
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the conventional method described above has a problem in that since the contact point can only be learned when the vehicle is stopped, the characteristic change of the contact point generated while the vehicle is running cannot be taken into account.
[0009] Therefore, when the above-mentioned change of the contact point occurs due to a change in a state where the clutch cannot be properly tracked, a shock occurs during a speed change, so that operability is deteriorated due to the occurrence of excessive slip of the clutch or reduced durability

Method used

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  • Method Of Searching For Touch Point Of Clutch
  • Method Of Searching For Touch Point Of Clutch
  • Method Of Searching For Touch Point Of Clutch

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Embodiment Construction

[0025] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention has been described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims .

[0026] Reference will now be made to the drawings, wherein the same reference numerals are used throughout to designate the same or like elements.

[0027] refer to figure 2 , The method of searching for a contact point of a clutch according to an exemplary embodiment of the present invention includes a reference measurement step S20, a clutch...

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Abstract

A method of searching for a touch point of a clutch may include a reference measurement step of measuring angular acceleration of an input shaft while a gear of a non-drive shaft may be being engaged and disengaged, a clutch operation step of engaging the gear disengaged at the reference measurement step and manipulating a clutch of the input shaft to a currently stored touch point, a target measurement step of measuring angular acceleration of the input shaft while disengaging an engaged gear in a state of maintaining the clutch operated at the clutch operation step, and a learning step of learning and updating the touch point by comparing the angular acceleration of the input shaft measured at the target measurement step with the angular acceleration measured at the reference measurement step.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2012-0126587 filed on Nov. 9, 2012, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention generally relates to a method of searching for a contact point of a clutch, and more particularly, to a technique capable of accurately maintaining a contact point of a dry clutch applied in a dual clutch transmission (DCT) mounted on a vehicle. Background technique [0004] DCTs include clutches that can use actuators to automatically transmit or block power. When the clutch is a dry clutch, the contact point (i.e., the point from which the clutch is operated) changes due to changes in the temperature of the clutch or wear of the clutch, so it is necessary to properly adjust the contact point to maintain reliable operability of the clutch . [0005] figure 1 is a graph showing clut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/00
CPCF16D2500/10412F16D2500/30404F16D2500/30417F16D2500/3108F16D2500/50245F16D2500/5026F16D2500/50275F16D2500/70252F16D2500/70264F16D48/06F16D48/10F16H61/14
Inventor 曺圣铉尹永珉金正喆白承三
Owner HYUNDAI MOTOR CO LTD