DE102012212970A1 - Torque transmission device and drive train with torque transmission device - Google Patents

Abstract

The invention relates to a torque transmission device, in particular a friction clutch, for a drive train of a vehicle, having a torque input, a torque output and a torque input to the torque output torque transmission path, in which a flywheel with at least one flywheel and at least one centrifugal pendulum with at least one pendulum mass and at least a guide for this pendulum mass are arranged. It is provided that the centrifugal pendulum with respect to the at least one flywheel is arranged on the input side in the torque transmission path. The invention further relates to a drive train for a vehicle having such a torque transmission device.

Description

The invention relates to a torque transmission device, in particular a friction clutch, for a drive train of a vehicle, having a torque input, a torque output and a torque input to the torque output torque transmission path, in which a flywheel with at least one flywheel and at least one centrifugal pendulum with at least one pendulum mass and at least a guide for this pendulum mass are arranged.

From the DE 10 2009 042 831 A1 a friction clutch for a vehicle is known, which has a torque input, a torque output and a torque input to the torque output torque transmission path in which a flywheel with at least one flywheel and at least one centrifugal pendulum with several pendulum masses and guides for these pendulum masses are arranged. The flywheel forms a counter-pressure plate of the clutch, which also has a pressure plate for pressing a clutch disc between the pressure plate and the counter-pressure plate. The pressure plate is connected downstream of the counter-pressure plate in the torque transmission path, that is arranged on the output side of the counter-pressure plate or the flywheel. Furthermore, from this publication, a corresponding drive train with an internal combustion engine (an internal combustion engine), a transmission and such a clutch known. The clutch is interposed in the drive train between the engine and the transmission, wherein the torque input to the crankshaft of the internal combustion engine and the torque output is connected to the transmission input shaft of the transmission.

In the combustion chambers of the internal combustion engine, combustion processes take place, which transmit a non-continuous torque to the crankshaft driving the drive train as a result of their design-related mode of operation. As a result, torsional or torsional vibrations occur, for the damping of which torsional vibration dampers or torsional vibration dampers are used. Torsional vibration dampers are integrated, for example, in clutch discs of the friction clutch. A special design of a torsional vibration damper is the centrifugal pendulum pendulum masses are arranged on raceways with circumferential and radial component, so that the pendulum masses take different radii for torsional vibrations and thus increases the moment of inertia of the pendulum masses receiving component and the component is slowed down for a short time.

It is the object of the invention, in particular against the background of a confined space in the drive train space, to propose additional or alternative ways of reducing drive train vibrations.

The object is achieved according to the invention by the features of claims 1 and 10. Preferred embodiments of the invention are specified in the subclaims, which individually or in combination may constitute an aspect of the invention.

In the torque transmission device according to the invention it is provided that the centrifugal pendulum with respect to the at least one flywheel is arranged on the input side in the torque transmission path. On or the input side of the flywheel sufficient space for the at least one centrifugal pendulum is available in many cases, or can at least be created there. If the flywheel is designed as a flywheel with several flywheel masses (in particular as a dual mass flywheel), then the centrifugal pendulum pendulum is arranged on the input side with respect to all flywheel masses of this flywheel. Preferably, the centrifugal pendulum in the Einmassenschwungrad directly on the input side of the single flywheel or in the multi-mass flywheel, for example, the dual mass flywheel, arranged directly on the input side of the primary flywheel. The centrifugal pendulum preferably has several pendulum masses. The flywheel can / can be connected in the torque transmission path of the torque transmission device one or more further components in the transmission direction.

The torque transmission device according to the invention is a robust, functionally reliable and at least space-neutral solution for reducing momentary irregularities.

In the context of the invention described herein, the terms input-side and output-side - unless otherwise clear from the context - usually related to the direction of torque transmission in the torque transmission path or in the drive train. The term flywheel mass is understood to mean both a mass (in the physical sense) and a mass body (ie a flywheel mass body) applying this flywheel mass.

Preferably, the flywheel on the centrifugal pendulum with its pendulum mass or its pendulum masses. The centrifugal pendulum is thus part of the flywheel.

In particular, it is provided that the input side of the single flywheel or the input side of the primary flywheel alone or together with other components of the flywheel forms the leadership of a pendulum mass or pendulum masses. The guide forms guide surfaces on which the pendulum mass or pendulum masses is / are performed.

According to a preferred embodiment of the invention it is provided that the flywheel is a single flywheel with only one flywheel. The single flywheel is particularly simple and robust.

Preferably, the flywheel is arranged directly at the input end of the torque transmission path. As a result, the moment irregularities are reduced directly after the torque input. In this case, the flywheel is preferably also arranged at the input end of the torque transmission device.

According to a preferred embodiment of the invention, the flywheel of Einmassenschwungrades or the primary flywheel of a multi-mass flywheel on the input side at least one recess for receiving the centrifugal pendulum or at least the pendulum mass of the centrifugal pendulum.

According to a further preferred embodiment of the invention, the guide for the flywheel mass forming or co-forming other components or at least one of the guide forming or co-forming other components of the flywheel is formed as a guide plate. The pendulum mass (s) of the centrifugal pendulum is / are encapsulated with advantage by the guide plate in the flywheel.

It is particularly provided, the guide plate and the input side of the flywheel, so the input side of the single flywheel at a Einmassenschwungrad or the input side of the primary flywheel at a multi-mass flywheel, which forms at least one guide of the centrifugal pendulum to guide the pendulum masses.

In particular, a plurality of pendulum masses are provided, which are circumferentially evenly distributed with respect to the axis of rotation of the centrifugal pendulum.

In a preferred embodiment, the at least one pendulum mass is guided by means of at least one slotted guide along guide surfaces of the guide. Such a slotted guide is in principle from the cited document DE 10 2009 042 831 A1 known.

According to a further preferred embodiment of the invention, it is provided that the flywheel of the torque transfer device formed as a friction clutch forms a counter-pressure plate and that the friction clutch also has a pressure plate for pressing a clutch disc of the friction clutch between the pressure plate and the counter-pressure plate. Clutch disc and pressure plate are connected downstream of the flywheel.

According to yet another preferred embodiment of the invention, the flywheel on a starter teeth for combing with a starter pinion of a starter. About the flywheel, the engine can be started by the starter. The starter toothing is arranged on the outer circumference of the flywheel. Preferably, the starter toothing is formed on the input side on the outer circumference of the flywheel. The starter toothing is formed directly on the flywheel or one of the flywheels or on a starter ring gear of the flywheel.

The drive train according to the invention for a vehicle has an internal combustion engine (an internal combustion engine), a transmission and a torque transmission device designed as a friction clutch, wherein the friction clutch is interposed in the drive train between the internal combustion engine and the transmission. It is envisaged that this friction clutch is formed as the above-mentioned friction clutch.

The invention will now be described by way of example with reference to the accompanying drawings with reference to preferred embodiments, wherein the features shown below, both individually and in combination may represent an aspect of the invention. Show it:

1 1 shows a torque transmission device in the form of a friction clutch according to a preferred embodiment of the invention, in a sectional view,

2 a flywheel for a torque transmission device with integrated centrifugal pendulum,

3 : a pendulum mass of a flywheel integrated centrifugal pendulum in a perspective sectional view along the in 2 shown section line AA,

4 : a pendulum mass of a flywheel integrated centrifugal pendulum in a perspective sectional view along the in 2 shown section line BB,

5 : a pendulum mass of a flywheel integrated centrifugal pendulum in a perspective sectional view along the in 2 shown section line CC,

6 - 13 : various possible attachment types of guide plates on the other components of the flywheel,

14 & 15 : Embodiments of the guided in slide guides roles of centrifugal pendulum,

16 & 17 : Construction of the pendulum masses from laminated cores with various types of connection of the metal sheets,

18 - 22 : various types of pendulum mass stops.

The 1 shows in a sectional view as a friction clutch 10 trained torque transmission device 12 for a drive train of a vehicle, more specifically a motor vehicle, such as a passenger car or a truck. The torque transmitting device 12 has a torque transmission path 14 on, the one torque input 16 the torque transmitting device 12 with a torque output 18 the torque transmitting device 12 combines. The as friction clutch 10 trained torque transmission device 12 is in the powertrain of a motor vehicle generally between the crankshaft of the internal combustion engine (the internal combustion engine) and / or the output shaft of another prime mover of the motor vehicle and a transmission input shaft of a transmission (both not shown) interposed.

The torque transmitting device 12 has one as a single flywheel 20 trained flywheel 22 with a flywheel 24 and a centrifugal pendulum 26 with several pendulum masses 28 on, in 1 only one of these pendulum masses 28 is shown. More specifically, the centrifugal pendulum 26 in the flywheel 22 integrated. Thus, the flywheel has 22 next to the flywheel 24 also the centrifugal pendulum 26 on. Here is the centrifugal pendulum 26 with respect to the flywheel 24 the flywheel 22 on the input side in the torque transmission path 14 arranged. The flywheel 22 in turn is in the torque transmission path 14 directly behind the torque input 16 arranged.

In this as a friction clutch 10 trained torque transmission device 12 forms the flywheel 22 a counter-pressure plate of the friction clutch 10 , which also includes a clutch disc 32 and a pressure plate (not shown) for pressing the clutch disc 32 between the pressure plate and the counter-pressure plate 30 having. In the torque transmission path 14 the clutch 10 is the clutch disc 32 the counterpressure plate 30 (or the flywheel 22 ) and the (not shown) pressure plate of the clutch disc 32 downstream. In the torque transmission path 14 This results in the following series connection of elements: Torque input 16 , Flywheel 22 with counter-pressure plate formed on the output side 30 , Clutch disc 32 and torque output 18 ,

Inside the as one-way flywheel 20 trained flywheel 22 is the centrifugal pendulum 26 arranged. It lies on the torque input 16 facing side of the single flywheel 24 the flywheel 22 , This is on the torque input 16 facing side of the flywheel 24 of the single-mass flywheel 20 (or alternatively the primary flywheel of a multi-mass flywheel) a recess 34 for receiving the centrifugal pendulum 26 or at least the pendulum masses 28 of the centrifugal pendulum 26 educated. The pendulum mass 28 is from a laminated core 36 with several sheets (here three sheets) formed. Furthermore, the flywheel 24 a guide plate 38 (or more generally a wall-like guide member) for guiding the at least one pendulum mass 28 of the centrifugal pendulum 26 on. This simultaneously forms a cover of the pendulum mass (s) 28 ,

The entrance page 40 the flywheel 24 at the bottom of the recess 34 forms together with the guide plate 38 guides 42 the pendulum masses 28 , Along the from the guide plate 38 and the input side 40 formed management levels, the pendulum masses 28 to perform a pendulum motion.

The flywheel 22 points to its outer circumference 44 is in the range of the input side 40 , ie radially outside the centrifugal pendulum 26 , a starter ring gear 46 with a starter toothing in the form of a spur gear on.

The 2 shows a side view of the input side of the flywheel 22 , In this illustration, the guide plate 38 omitted so that the over the circumference of the flywheel 22 distributed pendulum masses 28 on the input side 40 the flywheel 24 are recognizable. The pendulum masses 28 are in the recess 34 on said entrance side 40 arranged. Further Details on the structure of the centrifugal pendulum 26 will be described with reference to the following figures.

The 3 to 5 show perspective sectional views through the flywheel 22 along the in 2 drawn section lines AA ( 3 ), BB ( 4 ) and CC ( 5 ).

3 shows the leadership 42 in detail. The of the laminated core 36 formed pendulum mass 28 is between the guide plate 38 and the input side 40 the flywheel 24 guided. Thus, the inside of the guide plate forms 38 and the input side 40 the flywheel 24 one guide surface each 48 . 50 the guides 42 ,

The pendulum masses 28 of the centrifugal pendulum 26 are each using at least one slotted guide 52 between the guide surfaces 48 . 50 guided on appropriate tracks. In addition, each of the pendulum masses 28 with scenes recesses 54 as well as the flywheel 24 in the area of their guiding surface 48 and the guide plate 38 in the area of its guidance surface 50 with further scenes recesses 56 for engaging at least one leadership role 58 Mistake. Here are per pendulum mass 26 two guide rollers each 58 intended. Each of the leadership roles 58 passes through a sliding recess 54 its associated pendulum mass 26 and the other scenes 56 the guide surfaces 48 . 50 forming elements 24 . 38 So here's the guide sheet 38 and the flywheel 24 , The slide recesses 54 . 56 form roller tracks of the guide rollers 58 , These slide recesses ( 56 ) can alternatively in mounted "inserts" on the flywheel 24 be integrated.

The particular link guide 52 gives the possible movement of the pendulum mass 28 in front. As a result, the (respective) pendulum mass 28 depending on attacking centrifugal forces change their position and thereby the effective moment of inertia of the flywheel 22 to speed-dependently modify for damping of torsional vibrations.

4 shows the structure of the pendulum masses 28 in detail. The sheets of the laminated core 36 are by riveting 60 held together.

5 shows stop elements 62 to which the pendulum masses 28 in the extreme positions of their (pendulum) movement can strike with their final edges. The stop elements 62 extend between the guide surfaces 48 . 50 and have a pin-shaped core and a circumferentially surrounding the core damper element.

This results in the following design options and the following advantages:
Regarding the limitation of axial pendulum mass tumbling to avoid noise and fatigue problems, the following components can be used: standard pins such as 2x4 to DIN ENISO8746a in ZMS-FKP L-09977-0G61-02_M02 and Kunsstoffklipse similar to the series BMW-FKP.

• – Reduzierung der Motorungleichförmigkeit,
• – verbesserte Isolation der Torsionsungleichförmigkeit der Getriebeeingangswelle und
• – keine (bzw. nur geringe) Bauraumerweiterung.

As advantages of this arrangement of the centrifugal pendulum 26 on the flywheel 22 or within the flywheel 22 are to call:

• Reduction of engine irregularity,
• - Improved isolation of the torsional nonuniformity of the transmission input shaft and
• - No (or only small) space expansion.

The 6 to 13 show various possible types of fastening of guide plates 38 on the other components 24 . 46 the flywheel 22 ,

6 shows the attachment of the guide plate 38 on the flywheel 24 by caulking 64 in the outer and / or inner area between guide plate 38 and flywheel 24 the flywheel 22 ,

7 shows one with the sprocket 46 welded guide plate 38 , Between the edge of the guide plate 38 and inner diameter of the sprocket 46 is a weld 66 educated. This arrangement, referred to as a subassembly (USZB), is then on the casting of the flywheel 24 fastened, for example by means of a screw 68 (Clutch cover screw or KD screw) with the flywheel 24 screwed together. The pendulum masses 28 are previously on the body of the flywheel 24 arranged.

8th shows another type of fastening, in which the guide plate 38 inside the flywheel 22 (Range of torque input 16 ) with the flywheel 24 bolted together or pre-riveted. Again, the pendulum masses 28 on the flywheel 24 is arranged and then the sub-assembly (USZB) by means of the screw designed as a crankshaft screw 70 bolted to the crankshaft.

The 9 shows an alternative in which the sprocket 46 and the guide plate 38 simultaneously with the flywheel 24 forming casting of the flywheel 22 be screwed together (possibly with the KD screw). The pendulum masses 28 are ahead of the flywheel 24 arranged.

The 10 to 13 show centrifugal pendulum 26 in which two guide plates 38 the two guide surfaces 48 . 50 form. Here are the sprocket 46 and two parallel guide plates 38 simultaneously with the flywheel 24 forming castings by means of screw 68 (possibly with the KD screw) screwed together. The pendulum masses 28 are between the two guide plates 38 arranged in advance. In this alternative is no milling of the flywheel 22 necessary, resulting in cost and strength benefits.

In the alternatives of 10 and 11 are two (symmetrical) guide plates 38 welded together at their outer diameters. The pendulum masses 38 are previously between these guide plates 38 been arranged. The sprocket 46 is on a guide plate 38 Shrunk and / or with both guide plates 38 and the flywheel 24 bolted (possibly with the KD screw) or pre-riveted. The sub-assembly USZB is then bolted together on the crankshaft.

In the alternatives of 12 and 13 are also two (symmetrical) guide plates 38 provided, which are welded together at their outer diameters (weld 66 ). The pendulum masses 28 are previously between these guide plates 38 been arranged. This sub-assembly UZSB is at the the flywheel 24 screwed or riveted forming body (eg by means of screwing and / or riveting 72 , or between the torque input connected to the crankshaft 16 and the flywheel 22 arranged.

The 14 to 17 show the structure of the pendulum mass 28 with the roles 58 , The structure and arrangement of the individual pendulum masses 28 and the roles 58 can be realized as follows:
The pendulum mass 28 is designed as a one-piece pendulum mass ( 14 ), which may be stamped, milled, drilled and / or lasered. Here are per pendulum mass 28 two roles 58 with two surrounding Borden 74 in the sub-assembly of the centrifugal pendulum 26 assembled.

Alternatively, there are two roles 58 and the laminated core 36 with three sheet metal pendulum masses (stamped, milled, drilled and / or lasered) as a subassembly of the pendulum mass 28 assembled ( 15 ). The roles 58 are stepped with respect to their longitudinal axis. Each of the roles 58 has a central step with a radius R1, which is followed on both sides by a further step with a radius R2 and finally on both sides outside another step with a radius R3, where R1>R2> R3. The middle swing plate 76 can be made of less demanding material than the outer pendulum sheets 78 because the middle sheet 76 of the laminated core 36 no contact surfaces with the rollers 58 Has. The two outer pendulum sheets 78 on the other hand are in contact with the roles 58 , So the roles 58 in the pendulum mass 28 are axially centered, have the rollers 58 the wide central stage with radius R1, which is more robust in terms of wear problems than the standard solution.

The 16 and 17 show the connection types of the pendulum sheets 76 . 78 inside the laminated core 36 , In the laminated core of 16 are the sheets 76 . 78 by riveting 60 riveted, at the laminated core of 17 are the sheets 76 . 78 by means of welds 66 or welds welded together.

The 18 to 22 show the structure and the arrangement of stop elements 62 (Stop dampers) for the pendulum masses 28 taking into account fatigue strength and temperature resistance issues.

18 shows in a perspective view already in 5 Shown stop element 62 with the pin-like core and the rubber jacket. There are several stop elements 62 with spacer bolts between the guide plate 38 and the flywheel 24 or between the guide plates 38 at the end of each pendulum mass 28 arranged as a function of the impact energy.

Due to possible permanent and temperature resistance problems, the stop elements 62 be modified or replaced by the following measures:
compression springs 80 on the guide plate 38 and / or on the flywheel 24 are attached. At the stop element 62 of the 19 is the compression spring shown 80 by means of a sheet metal tab 82 on the flywheel 24 attached. Alternatively, compression springs 80 provided in the pendulum masses 28 are mounted ( 20 ) and with a rigid stop element 62 interact.

shaped springs 84 (Leg spring, double leg spring, worm feather, etc.), which are on the guide plate 38 and / or on the flywheel 24 are attached. To these solutions with spring elements 80 . 84 Rubber stops can be combined to this. 21 shows a designed as a double leg spring form spring 84 attached to (centering) bolts 86 the flywheel 24 is attached. 22 shows a formed as a worm spring form spring 84 also attached to bolts 86 the flywheel 24 is attached.

Summarized in other words: It is an arrangement of at least one centrifugal pendulum 26 within the torque transmitting device 12 even before the flywheel 24 the flywheel 22 , in particular the one-mass flywheel 20 , provided so that the torsional nonuniformity of the torque occurring at the torque input is reduced.

The torque transmitting device 12 can be created by the construction concepts shown.

• 1. verbesserte Isolation für die Torsionsungleichförmigkeit der Getriebeeingangswelle gegenüber die Standart-Variante ohne Fliehkraftpendel 26,
• 2. keine bzw geringe Bauraumerweiterung,
• 3. Verbesserung des Fahrkomforts und der Lebensdauerfestigkeit der Getriebekomponente und die Möglichkeit Getriebeteile dann auch anders zu dimensionieren,
• 4. Reduktion der Drehmoment-Ungleichförmigkeit der Brennkraftmaschine (des Verbrennungsmotors), was auch einen eventuellen Einfluss über die Dimensionierung andere Komponente haben könnte, wie zum Beispiel Nebenaggregate die in der Front der Maschine / des Motors zugeordnet sind und
• 5. Gewichtsreduktion bei Nutzung eines Einmassenschwungrades 20 gegenüber einer Drehmomentübertragungseinrichtung 12 mit einem Zweimassenschwungrad.

As advantages of at least one flywheel 24 input side arrangement of the centrifugal pendulum 26 in the torque transmission path 14 are to call:

• 1. improved insulation for the torsional nonuniformity of the transmission input shaft over the standard version without centrifugal pendulum 26 .
• 2. no or small space expansion,
• 3. Improvement of driving comfort and durability of the transmission component and the possibility of dimensioning transmission parts differently,
• 4. Reduction of the torque non-uniformity of the internal combustion engine (the internal combustion engine), which could also have a possible influence on the dimensioning of other components, such as ancillaries which are assigned in the front of the engine / the engine and
• 5. Weight reduction when using a single flywheel 20 opposite a torque transmission device 12 with a dual mass flywheel.

LIST OF REFERENCE NUMBERS

10

 friction clutch

12

 Torque transfer device

14

 Torque transmission path

16

 torque input

18

 torque output

20

 mass flywheel

22

 flywheel

24

 Inertia

26

 centrifugal pendulum

28

 pendulum mass

30

 Platen

32

 clutch disc

34

 recess

36

 laminated core

38

 guide plate

40

 Input side (flywheel mass)

42

 guide

44

 outer periphery

46

 Starter gear

48

 guide surface

50

 guide surface

52

 link guide

54

 Kulissenausnehmung

56

 Kulissenausnehmung

58

 leadership

60

 rivet

62

 stop element

64

 caulking

66

 Weld

68

 screw

70

 screw

72

 Screw / rivet

74

 Borde

76

 middle swing plate

78

 outer pendulum sheet

80

 compression spring

82

 sheet tab

84

 shaped spring

86

 bolt

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102009042831 A1 [0002, 0017]

Cited non-patent literature

• DIN EN ISO 8746a [0044]

Claims (10)

Torque transmission device ( 12 ), in particular friction clutch ( 10 ), for a drive train of a vehicle, with a torque input ( 16 ), a torque output ( 18 ) and a torque input ( 16 ) with the torque output ( 18 ) connecting torque transmission path ( 14 ), in which a flywheel ( 22 ) with at least one flywheel ( 24 ) and at least one centrifugal pendulum ( 26 ) with at least one pendulum mass ( 28 ) and at least one tour ( 42 ) for this pendulum mass ( 28 ) are arranged, characterized in that the centrifugal pendulum ( 26 ) with respect to the at least one flywheel ( 24 ) on the input side in the torque transmission path ( 14 ) is arranged. Torque transmission device according to claim 1, characterized in that the flywheel ( 22 ) the centrifugal pendulum ( 26 ) having. Torque transmission device according to claim 1 or 2, characterized in that the input side of the single flywheel ( 24 ) or the input side of the primary flywheel alone or together with at least one other component ( 38 ) of the flywheel ( 22 ) the leadership ( 42 ) for the at least one pendulum mass ( 28 ). Torque transmission device according to one of claims 1 to 3, characterized in that the flywheel ( 22 ) a single flywheel ( 20 ) with only one flywheel ( 24 ). Torque transmission device according to one of claims 1 to 4, characterized in that the flywheel ( 24 ) of the single flywheel ( 20 ) or the primary flywheel mass of a multi-mass flywheel on the input side at least one recess ( 34 ) for receiving the centrifugal pendulum ( 26 ) or at least the at least one pendulum mass ( 28 ) of the centrifugal pendulum ( 26 ) having. Torque transmission device according to one of claims 1 to 5, characterized in that the guide ( 42 ) forming or co-forming other components or at least one of the leadership ( 42 ) forming or co-forming other components of the flywheel ( 22 ) as a guide plate ( 38 ) is trained. Torque transmission device according to one of claims 1 to 6, characterized in that the guide plate ( 38 ) and the input side flywheel ( 24 ) the at least one leadership ( 42 ) for guiding the pendulum masses ( 28 ). Torque transmission device according to one of claims 1 to 7, characterized in that the at least one pendulum mass ( 28 ) by means of at least one slotted guide ( 52 ) along guide surfaces ( 48 . 50 ) the leadership ( 42 ) is guided. Torque transmission device according to one of claims 1 to 8, characterized in that the flywheel ( 22 ) as a friction clutch ( 10 ) formed torque transmission device ( 12 ) forms a counter-pressure plate and the friction clutch ( 10 ) also a pressure plate for pressing a clutch disc ( 32 ) of the friction clutch ( 10 ) between the pressure plate and the counter-pressure plate ( 30 ) having. Drive train for a vehicle, with an internal combustion engine, a transmission and a friction clutch ( 10 ) formed torque transmission device ( 12 ), wherein the friction clutch ( 10 ) is interposed in the drive train between the internal combustion engine and the transmission, characterized in that this friction clutch ( 10 ) as a friction clutch ( 10 ) is designed according to one of claims 1 to 9.

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