WO2008106924A1 - Dispositif pour identifier l'état de service d'une garniture de friction - Google Patents

Dispositif pour identifier l'état de service d'une garniture de friction Download PDF

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Publication number
WO2008106924A1
WO2008106924A1 PCT/DE2008/000270 DE2008000270W WO2008106924A1 WO 2008106924 A1 WO2008106924 A1 WO 2008106924A1 DE 2008000270 W DE2008000270 W DE 2008000270W WO 2008106924 A1 WO2008106924 A1 WO 2008106924A1
Authority
WO
WIPO (PCT)
Prior art keywords
friction lining
chip
operating state
friction
chips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2008/000270
Other languages
German (de)
English (en)
Inventor
Robert Felger
Christian Spandern
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Buehl Verwaltungs GmbH
LuK Lamellen und Kupplungsbau GmbH
Original Assignee
LuK Lamellen und Kupplungsbau Beteiligungs KG
LuK Lamellen und Kupplungsbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LuK Lamellen und Kupplungsbau Beteiligungs KG, LuK Lamellen und Kupplungsbau GmbH filed Critical LuK Lamellen und Kupplungsbau Beteiligungs KG
Priority to DE112008000382T priority Critical patent/DE112008000382A5/de
Publication of WO2008106924A1 publication Critical patent/WO2008106924A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D66/02—Apparatus for indicating wear
    • F16D66/021—Apparatus for indicating wear using electrical detection or indication means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D66/02—Apparatus for indicating wear
    • F16D66/021—Apparatus for indicating wear using electrical detection or indication means
    • F16D66/026—Apparatus for indicating wear using electrical detection or indication means indicating different degrees of lining wear
    • F16D66/027—Sensors therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/001—Temperature

Definitions

  • the invention relates to a device for detecting the operating state of a friction lining on a Reibbelagango.
  • a wear indicator by means of electronic sensors is disclosed for example in DE 44 45 577 C1. Furthermore, the wear of friction linings can be determined from a model calculation, in which the energy introduced into the friction system is summed up over the operating period and, in conjunction with experimentally determined data for the wear of a friction lining, is returned to the current operating state of the friction lining.
  • the object of the invention is to propose an alternative solution to these methods, which operates reliably in their evaluation and against influences, especially in the environment of a motor vehicle.
  • the invention is achieved by a device for detecting the operating state of a friction lining on a friction lining, in which at least one chip is provided according to the RFID principle.
  • a material mix for example, for use in friction clutches, a material mix may be provided which comprises friction components, organic components, binder and filler components. contains substances.
  • Such friction linings can be configured annularly, wherein preferably two annular linings can be combined with mutually remote, engageable friction surfaces with the interposition of pad spring segments to a friction lining with friction linings, which can be attached to a clutch disc. Friction linings can furthermore be so-called wound coverings, in which textiles or fibers soaked in covering components are made into a covering with other covering components.
  • the number of windings can determine the lining thickness, so that the winding process can be stopped at one or more desired locations in order to accommodate one or more chips at a desired lining thickness.
  • a residual thickness of the friction lining can be derived after a corresponding period of operation with a corresponding abrasion by the behavior of the chip or chips is evaluated.
  • At least one chip is provided for detecting the operating state of the friction lining.
  • chips according to the RFID principle also called transponder, RFID chip, smart tag, etc.
  • clutch discs with friction lining carriers and friction linings mounted thereon, which are preferably adapted to the conditions in the vicinity of couplings.
  • chips which are resistant and mechanically stabilized for example introduced in appropriate packagings, up to 400 ° C.
  • the friction linings can be distributed annularly and several chips distributed over the circumference of each friction lining. It is also possible to disperse differing chips with respect to their response across the thickness of the friction lining.
  • a wear detection of the friction lining can take place in that for communication with the at least one chip a transmitter unit and for evaluation of the signals an evaluation unit is provided. As long as the thickness of the friction lining is greater than a predetermined as a wear reserve thickness communication between the transmitter unit of the chip and the evaluation take place; ie as long as the at least one chip can still be read, the clutch is still in order. However, as soon as the friction lining has worn away on the friction lining carriers so far that the at least one chip is also removed, no further signals from the evaluation unit are received by the latter. This time is an indication of the size of the abrasion or the size of the remaining wear reserve.
  • a warning is issued in this failure of a signal response of the at least one chip to protect the clutch or individual parts of the clutch from damage.
  • This warning can be in the form of an acoustic or optical signal.
  • the warning can be output as a level, for example, via a color gamut on a display, by different tones whose height increases according to the decrease in the wear reserve.
  • a sequence of sounds is conceivable, the repetition of which is shortened by the wear o. ⁇ .
  • a step-like warning can be achieved when multiple chips are used, whose properties are temperature-dependent, so that from the resulting different properties on the size of the wear can be closed.
  • At least one chip of a plurality of chips can also be thermally insulated or temperature-compensated. Also, corresponding signals or their evaluation results can be supplied to a non-volatile memory, which can be read out and evaluated by the maintenance personnel, for example in the form of a fault memory.
  • the driver or the maintenance personnel can thereby be informed of the size of the wear of the friction linings.
  • warning signals can be evaluated by an evaluation unit, which is housed in a separate control unit or integrated as a module in another control unit.
  • an evaluation unit can form one or more predefinable or predetermined signal thresholds for the determined signals, in which different reactions, for example driver information, warnings or output signals for further automated activities of the control unit are initiated.
  • a wear device can be activated from this warning in special design examples with compressed clutches by causing an over-travel of the clutch so that the clutch travel of a new clutch is restored.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Operated Clutches (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

L'invention concerne un dispositif pour identifier l'état de service d'une garniture de friction sur un porte-garniture. En utilisant pour identifier l'état de service de la garniture de friction une puce fonctionnant selon le principe RFID, ce dispositif fonctionne d'une manière fiable, simple quant à son interprétation et protégée des influences, en particulier dans l'environnement d'un véhicule automobile.
PCT/DE2008/000270 2007-03-05 2008-02-13 Dispositif pour identifier l'état de service d'une garniture de friction Ceased WO2008106924A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008000382T DE112008000382A5 (de) 2007-03-05 2008-02-13 Vorrichtung zur Erkennung der Betriebszustandes eines Reibbelags

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007010509 2007-03-05
DE102007010509.8 2007-03-05

Publications (1)

Publication Number Publication Date
WO2008106924A1 true WO2008106924A1 (fr) 2008-09-12

Family

ID=39430760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000270 Ceased WO2008106924A1 (fr) 2007-03-05 2008-02-13 Dispositif pour identifier l'état de service d'une garniture de friction

Country Status (2)

Country Link
DE (2) DE112008000382A5 (fr)
WO (1) WO2008106924A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009050001A1 (fr) * 2007-10-10 2009-04-23 Continental Teves Ag & Co. Ohg Mâchoire de frein
DE102017116339A1 (de) 2017-07-20 2019-01-24 Schaeffler Technologies AG & Co. KG Verfahren zum Erfassen von Belagverschleiß
DE102017122451A1 (de) 2017-09-27 2019-03-28 Schaeffler Technologies AG & Co. KG Verfahren zur Erkennung eines Betriebszustandes einer Reibungskupplung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015220100B4 (de) 2014-10-16 2023-08-03 Schaeffler Technologies AG & Co. KG Getriebesystem für ein Kraftfahrzeug zur Übertragung von produktionsrelevanten Kenndaten in selbiges Getriebesystem eines Kraftfahrzeuges
FR3056045B1 (fr) * 2016-09-13 2019-10-04 Valeo Embrayages Dispositif de transmission de couple equipe d'un transpondeur de radio-identification

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020116992A1 (en) * 2001-02-26 2002-08-29 Trw Inc. System and method for monitoring wear of a vehicle component
US20060042734A1 (en) * 2004-08-24 2006-03-02 Turner Douglas D Wear component and warning system
US20060124214A1 (en) * 2004-12-15 2006-06-15 International Business Machines Corporation Monitoring of wearing surface layer thickness
US20060226984A1 (en) * 2005-04-08 2006-10-12 Lucas Menke Wear detection by transponder destruction
US20060273148A1 (en) * 2005-06-06 2006-12-07 Karstens Christopher K Detecting wear through use of information-transmitting devices

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4445577C1 (de) 1994-12-20 1996-02-29 Daimler Benz Ag Verfahren zur Bestimmung des Verschleißes von Kupplungsbelägen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020116992A1 (en) * 2001-02-26 2002-08-29 Trw Inc. System and method for monitoring wear of a vehicle component
US20060042734A1 (en) * 2004-08-24 2006-03-02 Turner Douglas D Wear component and warning system
US20060124214A1 (en) * 2004-12-15 2006-06-15 International Business Machines Corporation Monitoring of wearing surface layer thickness
US20060226984A1 (en) * 2005-04-08 2006-10-12 Lucas Menke Wear detection by transponder destruction
US20060273148A1 (en) * 2005-06-06 2006-12-07 Karstens Christopher K Detecting wear through use of information-transmitting devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009050001A1 (fr) * 2007-10-10 2009-04-23 Continental Teves Ag & Co. Ohg Mâchoire de frein
DE102017116339A1 (de) 2017-07-20 2019-01-24 Schaeffler Technologies AG & Co. KG Verfahren zum Erfassen von Belagverschleiß
WO2019015725A1 (fr) 2017-07-20 2019-01-24 Schaeffler Technologies AG & Co. KG Procédé pour détecter l'usure d'une garniture
DE102017122451A1 (de) 2017-09-27 2019-03-28 Schaeffler Technologies AG & Co. KG Verfahren zur Erkennung eines Betriebszustandes einer Reibungskupplung

Also Published As

Publication number Publication date
DE112008000382A5 (de) 2009-11-19
DE102008008908A1 (de) 2008-09-11

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