WO2009112243A2 - Embrayage à disques humide - Google Patents

Embrayage à disques humide Download PDF

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Publication number
WO2009112243A2
WO2009112243A2 PCT/EP2009/001726 EP2009001726W WO2009112243A2 WO 2009112243 A2 WO2009112243 A2 WO 2009112243A2 EP 2009001726 W EP2009001726 W EP 2009001726W WO 2009112243 A2 WO2009112243 A2 WO 2009112243A2
Authority
WO
WIPO (PCT)
Prior art keywords
clutch
plate clutch
recesses
plates
teeth
Prior art date
Application number
PCT/EP2009/001726
Other languages
German (de)
English (en)
Other versions
WO2009112243A3 (fr
Inventor
Holger Grünleitner
Alexander Lerch
Michael Buck
Roberta Cavalcanti-Selbach
Original Assignee
Audi Ag
Volkswagen Ag
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 Audi Ag, Volkswagen Ag filed Critical Audi Ag
Publication of WO2009112243A2 publication Critical patent/WO2009112243A2/fr
Publication of WO2009112243A3 publication Critical patent/WO2009112243A3/fr

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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/64—Clutch-plates; Clutch-lamellae
    • F16D13/68—Attachments of plates or lamellae to their supports
    • F16D13/683—Attachments of plates or lamellae to their supports for clutches with multiple lamellae
    • 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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling

Definitions

  • the invention relates to a wet-running multi-plate clutch, in particular for automatic transmissions in motor vehicles, according to the preamble of claim 1.
  • Such a multi-plate clutch describes, for example, WO 96/18051, in which elongated, circumferentially inclined recesses are provided within the annular, effective friction surfaces of the steel plates, which are intended to cause turbulence and associated detachment of the oil flow within the clutch plates.
  • the purpose of these recesses is to minimize the drag torque occurring at least temporarily due to the clutch cooling or the oil flow when the multi-plate clutch is disengaged and to reduce associated efficiency losses or malfunctions in the transmission control.
  • the object of the invention is to propose a multi-plate clutch of the generic type, which enables a further reduction of undesirable drag torques with undiminished high torque transmission with structurally low overhead.
  • the recesses are incorporated substantially radially outside the effective, annular friction surfaces of the steel disks in at least some of the teeth of the toothing. It was recognized that this effectively dissipates a flow congestion resulting from the design of the multi-plate clutch between the outer teeth of the steel disks and the corresponding clutch housing, and thus the undesirable drag torque when the multi-plate clutch is released can be significantly reduced.
  • the recesses do not reduce the effective friction surface, but such additional recesses are not necessarily excluded.
  • the recesses may be provided circumferentially in all teeth of the steel blades to ensure a particularly effective oil drain.
  • the recesses may be formed by holes, the diameter of which should correspond to provide effective flow cross sections at least one third of the tooth width of the teeth.
  • the recesses are made by open at the tooth tips notches in the teeth of the toothing. This allows taking into account the centrifugal oil flow in circumferential multi-plate clutch an effective deflection and dissipation of the cooling oil in the respective outflow openings of the clutch housing, as an added advantage also improved friction particles of the friction improved with the cooling oil and thus a trouble-free clutch function is ensured.
  • the notches can be adapted to existing flow conditions and depending on the oil-carrying grooves in the friction plates of Multi-disc clutch with semicircular groove base or with square groove base can be rectangular or square.
  • the notches can also be made V-shaped with radially outwardly widening flow cross-section.
  • the notches can be produced in a cost-effective manner in the stamping process, in particular in a single operation with the punching out of the entire steel plate.
  • Figure 1 shows the sketchy structure of a wet-running multi-plate clutch without surrounding clutch housing and inner hub, with alternately arranged steel plates and friction plates.
  • Figure 2 is a view of one of the steel plates of the multi-plate clutch, with radially outer teeth and executed as holes recesses in their teeth.
  • FIG. 3 shows an alternative embodiment of the steel lamella of FIG. 2, shown only partially, with semicircular notches arranged in the teeth;
  • FIG. 4 shows a further alternative embodiment of the steel plate according to FIG. 3 with quatradical notches; and Fig. 5 shows another, alternative embodiment of the steel blade of FIG. 3 with V-shaped notches in the teeth of the outer toothing.
  • FIG. 1 denoted by 10 is a multi-disc clutch, shown only in partial sketch, for automatic transmissions in motor vehicles which, unless described, is designed in a manner familiar to the person skilled in the art.
  • annular clutch disks are installed, which are formed alternately by friction disks 12 and steel disks 14 provided with friction bearings.
  • friction linings of the friction plates 12 radially aligned grooves are incorporated in a known manner.
  • the friction disks 12 have radially inner toothings 12a, via which the friction disks 12 are connected in the circumferential direction in a form-fitting manner with a shaft or hub (not shown) as a coupling input or output element.
  • the steel plates 14 have radially outer teeth 14 a, which produce a circumferentially positive connection with the coupling housing as the other Kupplungsausgangs- or input element.
  • the clutch plates 12, 14 can be pressed against each other via a non-illustrated hydrau- Tische actuator in the clutch housing with a force P for closing the multi-plate clutch 10.
  • the clutch plates 12, 14 are lifted apart from each other via a defined, low clearance.
  • the shaft or hub is provided via integrated channels with means for cooling oil supply, as indicated by the arrows 16.
  • the cooling oil flows radially outward with rotating multi-disc clutch 10 with centrifugal action and from there via return channels, not shown, in the clutch housing back into an oil sump.
  • the steel lamellae 14 are provided with recesses or openings, which are produced by bores 18 according to FIG.
  • the bores 18 lie substantially radially outside the annular friction surfaces 14b of the steel blades 14.
  • the friction surfaces 14b define their width as indicated by dashed lines between the tooth roots (according to FIG. 3 toothed base circle a) and the inner diameter d; the steel lamellae 14.
  • the diameters of the bores 18 correspond to approximately one third of the tooth width of the toothing 14a.
  • the said recesses in the steel lamellae 14 are formed by notches 20a to 20c which are open towards the tooth tips of the toothing. Their width is also about one third of the respective tooth width of the toothing 14a.
  • the notches 20a are as shown at least semicircular in the groove bottom, while according to FIG. 4, the notches 20b are designed with an angular groove bottom and in the clear cross-section approximately square. Finally, in FIG. 5, the notches 20c are embodied in a V-shape with a radially outwardly increasing throughflow cross section.
  • the configuration of the notches 20a to 20c depends, inter alia, on the required flow cross-sections and the design of the grooves in the friction linings of the friction discs 12 and, if necessary, can be determined empirically.
  • the notches 20a to 20c are also punched in a single operation with the production of steel plates 14 by punching.
  • the recesses or openings 18, 20 are incorporated continuously in each tooth of the toothing 14a.

Landscapes

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

Abstract

L'invention concerne un embrayage à disques humide, en particulier pour boîtes automatiques dans des véhicules à moteur, comprenant des disques d'embrayage annulaires, disposés dans un carter d'embrayage, et qui sont répartis en alternant disques en acier et disques de friction, les disques en acier étant connectés, par une denture extérieure radiale, par liaison de forme, en direction périphérique, avec le boîtier d'embrayage, et les disques de friction étant connectés, par une denture intérieure radiale, par liaison de forme, avec un arbre ou un moyeu, les disques de friction présentant des rainures évacuant de l'huile radialement vers l'extérieur, cependant que des évidements sont prévus dans les disques d'acier. En vue de réduire un couple de freinage se présentant éventuellement lorsque l'embrayage à disques est désengagé, l'invention est caractérisée en ce que les évidements (18, 20a à 20c) sont incorporés dans au moins un certain nombre de dents de la denture (14a), sensiblement radialement à l'extérieur des surfaces de friction annulaires (14b) des disques d'acier (14).
PCT/EP2009/001726 2008-03-12 2009-03-11 Embrayage à disques humide WO2009112243A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008013910.6 2008-03-12
DE102008013910A DE102008013910A1 (de) 2008-03-12 2008-03-12 Nasslaufende Lamellenkupplung

Publications (2)

Publication Number Publication Date
WO2009112243A2 true WO2009112243A2 (fr) 2009-09-17
WO2009112243A3 WO2009112243A3 (fr) 2009-11-05

Family

ID=40953002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/001726 WO2009112243A2 (fr) 2008-03-12 2009-03-11 Embrayage à disques humide

Country Status (2)

Country Link
DE (1) DE102008013910A1 (fr)
WO (1) WO2009112243A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108223605A (zh) * 2016-12-15 2018-06-29 舍弗勒技术股份两合公司 内片载体、相应的制造方法和离合器装置
WO2021032547A1 (fr) * 2019-08-21 2021-02-25 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Disque d'embrayage ou disque de friction et système composé d'un disque d'embrayage ou disque de friction et boîtier d'embrayage permettant d'obtenir une résistance à la traînée réduite

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013000650A1 (de) 2013-01-16 2014-07-17 Volkswagen Aktiengesellschaft Kupplungsvorrichtung, insbesondere Mehrfachkupplungsvorrichtung
DE102017203637A1 (de) 2017-03-07 2018-09-13 Zf Friedrichshafen Ag Lamellenschaltelement
DE102019122482A1 (de) * 2019-08-21 2021-02-25 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kupplungsscheibe bzw. Reibscheibe, Kupplungsglocke sowie System aus Kupplungsscheibe bzw. Reibscheibe und Kupplungsglocke zum Bewirken einer Geräuschoptimierung
DE102021102293B4 (de) 2021-02-02 2022-09-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Lamellenträger einer Nasskupplung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607884A3 (fr) * 1986-12-05 1988-06-10 Adler Spa Disque d'embrayage a friction en materiau de frottement, notamment pour vehicule a moteur
US20010002641A1 (en) * 1999-12-06 2001-06-07 Masanori Kato Friction engaging device
EP1205681A2 (fr) * 2000-11-07 2002-05-15 Alcon Components Limited Moyeu pour disque d'embrayage en carbon
DE102006042057A1 (de) * 2006-09-05 2008-03-06 Borgwarner Inc., Auburn Hills Kupplungsanordnung
US20080060897A1 (en) * 2006-09-07 2008-03-13 Toyota Jidosha Kabushiki Kaisha Frictional coupling device support structure and transmission

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161086B (de) * 1958-08-29 1964-01-09 Gen Motors Corp Lamellenkupplung
GB1134789A (en) * 1966-04-05 1968-11-27 Gen Motors Corp Toothed clutch plates
US4358001A (en) * 1975-05-21 1982-11-09 Iverson Roger A Wet disc friction brake circulation system
JPS63163040A (ja) * 1986-12-24 1988-07-06 Honda Motor Co Ltd トルク伝達装置
AU4519096A (en) 1994-12-09 1996-06-26 Means Industries, Inc. Clutch plate
IT1293849B1 (it) * 1997-08-12 1999-03-10 Gkn Viscodrive Gmbh Innesto a fluido viscoso
DE10333946B4 (de) * 2003-07-25 2010-01-14 Daimler Ag Lamelle für eine Lamellenkupplung
US20070062777A1 (en) * 2005-09-22 2007-03-22 Przemyslaw Zagrodzki Friction plates and reaction plates for friction clutches and brakes with reduced thermal stresses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607884A3 (fr) * 1986-12-05 1988-06-10 Adler Spa Disque d'embrayage a friction en materiau de frottement, notamment pour vehicule a moteur
US20010002641A1 (en) * 1999-12-06 2001-06-07 Masanori Kato Friction engaging device
EP1205681A2 (fr) * 2000-11-07 2002-05-15 Alcon Components Limited Moyeu pour disque d'embrayage en carbon
DE102006042057A1 (de) * 2006-09-05 2008-03-06 Borgwarner Inc., Auburn Hills Kupplungsanordnung
US20080060897A1 (en) * 2006-09-07 2008-03-13 Toyota Jidosha Kabushiki Kaisha Frictional coupling device support structure and transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108223605A (zh) * 2016-12-15 2018-06-29 舍弗勒技术股份两合公司 内片载体、相应的制造方法和离合器装置
WO2021032547A1 (fr) * 2019-08-21 2021-02-25 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Disque d'embrayage ou disque de friction et système composé d'un disque d'embrayage ou disque de friction et boîtier d'embrayage permettant d'obtenir une résistance à la traînée réduite
CN114270063A (zh) * 2019-08-21 2022-04-01 克诺尔商用车制动系统有限公司 用于引起降低的拖曳功率的离合器盘或摩擦盘以及由离合器盘或摩擦盘和离合器罩组成的系统
CN114270063B (zh) * 2019-08-21 2024-05-24 克诺尔商用车制动系统有限公司 用于引起降低的拖曳功率的离合器盘、摩擦盘和系统

Also Published As

Publication number Publication date
DE102008013910A1 (de) 2009-09-17
WO2009112243A3 (fr) 2009-11-05

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