DE102016201886A1 - Actuating device with a sensor for detecting a signal generator on a coupling system and coupling system with actuator - Google Patents

Abstract

The invention relates to an actuating device (1) for a clutch (2) of a motor vehicle drive train, comprising a housing (3), a slide (4) displaceably mounted relative to said housing (3), a slide fixed to the slide (4) and to Transmitting a displacement force to an actuating element (5) of the coupling (2) prepared actuating bearing (6), and a, the displacement position of the slide (4) relative to the housing (3) detecting the first sensor (7), wherein a second sensor ( 8) is designed and arranged such that a rotational position of a coupling component (9) rotating during operation of the clutch (2) relative to the housing (3) can be detected by it; and a clutch system (10) for a motor vehicle drive train, with a clutch (2) and such an actuating device (1).

Description

The invention relates to an actuator for a clutch of a motor vehicle drive train, i. for engaging and / or disengaging a clutch, which is in its operation in a drive train of a motor vehicle, such as a truck, car, bus or agricultural utility vehicle, integrated with a housing, a relative to this housing slidably mounted slider, one on the Slider displaceable firmly received and prepared for transmitting a displacement force to an actuator of the clutch actuator bearing, and a, the displacement position of the slider relative to the housing detecting, first sensor. The invention also relates to a coupling system for a motor vehicle drive train with a clutch and such an actuator.

Generic actuators are in the art, for example, from DE 100 39 242 A1 known. This is a release system for actuating a friction clutch in a drive train of a motor vehicle in the power path between at least one drive unit, such as an internal combustion engine, and an output unit, such as a speed change gear with a transmission input shaft and a transmission housing consisting of gear housing disclosed. The release system consists of a donor for receiving a directly from a driver via a pedal or an actuator initiated actuation pulse, a friction clutch actuated releaser with a release housing made of plastic, axially displaceable by the actuating pulse against the release housing and a release bearing a friction clutch verspannenden energy storage acting on Ausrückerteil and a connection for transmitting the actuating pulse from the encoder to the releaser. The releaser is arranged centrally about the transmission input shaft and axially opposite the release bearing disposed on a transmission housing component and secured thereto.

Consequently, in the already known, a clutch and an actuator having, clutch systems, a sensor in the actuator available, which determines a Ausrückweg of the slide, whereby a statement about the position of the actuating element is made. For additional detection of the current rotational position of the individual clutch components, in particular the clutch components, which are non-rotatably connected to an output shaft of an internal combustion engine, a further sensor within a separate cavity of the clutch bell or the engine block or the gear housing / bell housing is previously provided.

An exemplary coupling system known from the prior art 10 ' is also in the 5 shown schematically. This is yet another sensor 8th' radially outside of a rotationally fixed during operation connected to the output shaft of the internal combustion engine first rotary member in the form of a flywheel 9 ' appropriate. This additional sensor 8th' detects the rotational position of the flywheel 9 ' , The disadvantage, however, is that for the other sensor 8th' a separate recording in the cavity of the clutch bell or the engine block must be provided. In addition, the flywheel 9 ' to be provided with an appropriate pattern by the sensor 8th' is detectable. Mostly the flywheel 9 ' rework by means of machining processes. As a result, the manufacturing cost of the known clutch systems is also 10 ' quite high.

It is therefore the object of the present invention to remedy these known from the prior art disadvantages and in particular to provide a coupling system available, which should be designed in terms of its space compact and with respect. Its structure simpler.

This is inventively achieved in that a further, second sensor is configured and arranged such that a rotational position (preferably over a rotational speed and / or a rotational angle) of a rotating during operation of the clutch relative to the housing / rotatable coupling component is detectable.

By attaching a second sensor in the actuating device is dispensed with a recording of the other sensor in the region of the first rotary member and the additional processing of the first rotary member. The sensor is thus integrated into an existing anyway for the actuation of the clutch component of the clutch system. As a result of this arrangement of the further, second sensor, not only is its reception in the clutch bell, the engine block or the transmission housing eliminated, but also the electronic structure is considerably simplified.

Further advantageous embodiments are claimed in the subclaims and explained in more detail below.

If the first sensor and / or the second sensor is / are arranged within the housing, the two sensors are stably housed fixed to the housing and can be mounted in only one working step in the coupling system. This further simplifies the mounting of the sensor system.

If the second sensor is fixed against displacement on the slider, the Integrate sensors even more space-saving in the actuator.

Furthermore, it is advantageous if the first sensor and the second sensor have common electronic components. This further simplifies the structure.

In this context, it is particularly expedient if the first sensor and the second sensor have a common circuit board. As a result, the manufacturing cost of the actuator is further reduced.

Furthermore, it is expedient if the first sensor and the second sensor have a common electronic supply line section, which is connected at one end to an electrical connection, such as a plug receptacle or a plug. As a result, there is a common connection to the actuating device, by means of which the sensors transmit their data during operation to a control system / control unit.

In addition, the invention relates to a coupling system for a motor vehicle drive train, with a clutch, which designed for non-rotatable connection with an output shaft of an internal combustion engine, first rotary member (such as a flywheel or a pressure plate), one, designed for rotationally fixed connection with a transmission shaft of a transmission and relative to the first rotary member slidably disposed second rotary member (such as a clutch disc) and the displacement position of the second rotary part predetermining actuator (such as a plate spring or a pressure pot), and with an actuator according to one of the embodiments described above, wherein the actuating bearing to the actuator is applied / pressed and the second sensor with a detecting portion which is rotatably coupled to the first rotary member or the second rotary member cooperates for detecting the rotational position of the first rotary member or the second rotary member. Thus, the coupling system is particularly compact.

It is particularly advantageous if the detection section is connected (directly or indirectly) in a rotationally fixed manner to the first rotary part and the second sensor is arranged relative to the clutch (fixed to the housing or slide-proof) such that the detection section lies within a measuring range of the second sensor / is positioned. This makes it possible to determine a current speed of the internal combustion engine in operation sent.

It is also expedient if the detection section is connected in a rotationally fixed manner to the first rotary part by means of a clutch cover of the clutch. As a result, the detection section is moved particularly close to the second sensor.

In this context, it is particularly advantageous if the detection section a separately attached to the clutch cover sensor part, or a stoffteiliger part of an existing coupling component, such as the clutch cover itself, a pivotally mounted to the control element on the clutch cover hook ring, one of the adjusting element relative to the Clutch cover elastically biasing support spring, or the rotatably connected to the clutch cover actuator itself is. This makes it possible to perform a particularly effective measurement of the rotational position of the first rotary part.

Moreover, it is advantageous if the detection section forms a structure / pattern detectable by the second sensor, such as a surface roughness, a color marking or a recess. As a result, the manufacturing cost of the coupling system is further reduced.

In other words, according to the invention, a sensor, preferably in the form of a speed sensor, is provided in an actuating device, which is preferably designed as a release device. In order to save components and costs, it is provided according to the invention to associate the rotational speed sensor (second sensor) with the (first) sensor for path recognition in the release device / actuator. Both sensors can e.g. have a common housing, etc. The pattern can be attached to either the clutch or the plate spring tongues (on the actuator).

The invention will now be explained in more detail with reference to figures, in which context various embodiments are shown.

Show it:

1 a longitudinal sectional view of a coupling system according to the invention according to a first embodiment, comprising an actuating device, wherein a (second) sensor of the actuating device for determining a rotational speed of a first rotary member detects a, attached by a separate sensor part to a clutch cover of the clutch detection section,

2 a longitudinal sectional view of a coupling system according to the invention according to a second embodiment, wherein the rotational position of the first rotary member measuring (second) sensor of the actuator directly with the existing, the detection section forming geometry of an actuator interacts,

3 a longitudinal sectional view of a coupling system according to the invention according to a further, third embodiment, wherein the detection section is now stoffeinteiliger part of the adjusting element pivotally mounted on the clutch cover hook ring is formed,

4 a schematic longitudinal sectional view of a first rotary part of the clutch according to 1 wherein a receptacle is provided on the first rotary member, which makes it possible to detect a rotational speed of the output shaft of the internal combustion engine in a not yet fully mounted in a drive train state of the clutch system, such as an engine test bench, and

5 a longitudinal sectional view through a coupling system according to the prior art.

The figures are merely schematic in nature and are for the sole purpose of understanding the invention. The same elements are provided with the same reference numerals. Also, the different features of the embodiments can be freely combined with each other.

A first embodiment of a coupling system according to the invention 10 comprising an actuating device according to the invention 1 is in 1 illustrated. The coupling system 10 consists of a clutch 2 in the form of a friction clutch and the actuator 1 per se. The coupling 2 again, in principle, like the state of the art 5 constructed clutch designed and functioning.

The coupling 2 of the coupling system according to the invention 10 thus serves in principle as a separable torque transmitting element, which is already used here in a drive train of a motor vehicle. The coupling 2 has a first rotary part 9 on. The first turned part 9 is designed as a flywheel. The first turned part 9 is in this figure already with a partially shown output shaft 11 an internal combustion engine, such as a gasoline or diesel engine, rotatably connected. The first turned part 9 is also referred to alternatively as a printing plate. Next to the first turned part 9 is a second rotary part 13 in the clutch 2 available. The second turning part 13 is designed as a clutch disc. Consequently, the second rotary part has 13 a friction lining 21 on, on the first turned part 9 in the axial direction of the coupling 2 (in relation to a rotation axis 23 the clutch 2 ) frictionally engaged can be applied. A hub part 22 of the second rotary part 13 is radially inside the friction lining 21 arranged and on a gear shaft 12 , For example, a transmission input shaft of a transmission not shown here for clarity, slidably mounted. The hub part 22 is via an axial toothing on the gear shaft 12 rotationally fixed, but in the axial direction of the axis of rotation 23 slidably mounted. The rotation axis 23 the clutch 2 is coaxial with the gear shaft 12 and the output shaft 11 aligned.

On one of the first turned part 9 remote axial side of the second rotary member 13 is a pressure plate 24 used. This pressure plate 24 is in the usual way in operation rotatably with the first rotary part 9 connected. The pressure plate 24 is relative to the first rotary part 9 as well as to the second rotary part 13 slidably mounted. In 1 is an engaged position of the clutch 2 recognizable, in which the pressure plate 24 the friction lining 21 and thus the second rotary part 13 such against the first rotary part 9 presses them frictionally engaged with each other, for transmitting torque from the output shaft 11 on the gear shaft 12 , are interconnected. In a disengaged for clarity not shown here is the pressure plate 24 relative to this engaged position so to the first rotary part 9 moved that friction lining 21 no longer under Reibkraftschluss on the first rotary part 9 rotatably rests.

To determine the axial position of the pressure plate 24 is in the usual way an actuator 5 available. The actuator 5 is here as a plate spring 25 educated. However, in other embodiments, it is also possible, this actuator 5 form as a pressure cup movable only in the axial direction. Due to the design of the diaphragm spring 25 is the control element 5 pivoted. The actuator 5 is at one with the first turned part 9 hinged area pivotally mounted. In the usual way is for a clutch cover 16 the clutch 2 intended. The clutch cover 16 extends from one to the first rotary part 9 fixed area, viewed in the axial direction, radially outside of the second rotary part 13 as well as the pressure plate 24 sleeve-shaped over and closes with a sidewall area 26 which extends substantially disc-shaped radially inwardly, from. Through this clutch cover 16 is a recording room 27 enclosed, within which the second rotary part 13 , the pressure plate 24 and the actuator 5 / the plate spring 25 are arranged.

The plate spring 25 is pivotable in the usual way on the clutch cover 16 , by means of a pivot bearing 28 , appropriate. In the first embodiment according to 1 serves a bolt 29 for the formation of this pivot bearing 28 in cooperation with the sidewall area 26 , By pivoting the diaphragm spring 25 around this pivot bearing 28 becomes a radially outside of this pivot bearing 28 arranged contact point 30 between the plate spring 25 with the pressure plate 24 moved back and forth according to the engaged and disengaged position.

To engage or disengage / actuate the clutch 2 is in the coupling system 10 continue the actuator 1 available. The actuator 1 is preferably designed as a slave cylinder, namely pneumatic or hydraulic or semi-hydraulic slave cylinder, but alternatively also as a mechanical or electromechanical actuator unit.

The actuator 1 serves to disengage the clutch 2 and is thus also referred to as a releaser. Also training as an indentor / to engage the clutch 2 are conceivable. Due to the design of the actuator 1 as a releaser, is the actuator 1 in an unactuated state aligned so that the plate spring 25 the pressure plate 24 automatically against the second rotary part 13 and the second rotary part 13 again against the first turned part 9 presses, creating the engaged position.

To disengage / actuate the clutch 2 is a sliding in a housing 3 the actuator 1 recorded slide 4 available. The slider 4 is designed as a piston. The slider 4 points to his from the case 3 projecting area an actuating bearing 6 , in the form of a rolling bearing, on. The actuation bearing 6 has a first bearing ring, which is not shown here for the sake of clarity and in the axial direction of the slider 4 is applied, and a relative to this first bearing ring rotatably roller-mounted second bearing ring, in the axial direction of the actuator 5 is applied. Is the clutch 2 to open / disengage is on the slider 4 in the direction of the actuating element 5 extend to a pivoting of the control element 5 / the plate spring 25 to effect.

The housing 3 the actuator 1 Here is fixed in a schematically indicated clutch bell 14 appropriate. The clutch bell 14 is again in operation with an engine block / housing 36 connected to the internal combustion engine. It is also provided in other versions, the housing 3 to connect with a transmission housing.

A first sensor 7 in the form of a displacement sensor / displacement sensor is in the housing 3 the actuator 1 used. This first sensor 7 detected during operation one on the slide 4 sliding fixed measuring range for determining the axial position of the slider 4 relative to the housing 3 , Therefore, by means of the first sensor 7 always the correct axial displacement position of the slider 4 detectable. Also, the first sensor 7 as a displacement, force and / or pressure sensor 7 be educated.

Next to the first sensor 7 is a second sensor according to the invention 8th in the actuator 1 used. The second sensor 8th is right here in the case 3 with attached. The second sensor 8th is in 1 like the first sensor 7 , also shown schematically. The second sensor 8th is in particular designed as a sensor having a rotational position of the clutch cover 16 and thus, due to the non-rotatable connection of the clutch cover 16 with the first turned part 9 , Also a rotational position of the first rotating part 9 measures. Due to the connection of the first rotating part 9 with the output shaft 11 the internal combustion engine is thus also a rotational position of the output shaft 11 detected. In addition to the arrangement of the first sensor 7 and the second sensor 8th inside the case 3 , under attachment to each other, it should also be noted that these two sensors 7 . 8th alternatively also separately / spatially spaced at / in the housing 3 are arranged.

The second sensor 8th is designed as a rotational angle measuring sensor and / or a rotational speed measuring sensor and thus detects one on the rotational position of the first rotary part 9 back-related measured variable or a variable directly predetermining the rotary position during operation.

The two sensors 7 and 8th have in this embodiment a, not shown here for clarity, common board on. Also, they have at least partially a common power and data supply line, which finally in a common connection, such as a plug / or a plug receptacle on the housing 3 empties. So these two sensors are 7 and 8th electrically coupled during operation by means of a common electrical receptacle with a control system / control unit of the motor vehicle.

For measuring the rotational position of the first rotary part 9 , via the clutch cover 16 , is a detection section 15 provided, one through the second sensor 8th has detectable nature. The detection section 15 is here at a sensor part 17 educated. The sensor part 17 is a ring element / annular shaped. The sensor part 17 has at least one peripheral region, here at several peripheral regions, forming the detection section 15 , a structure 20 / Muster on, which when turning the first rotary part 9 a change of a measurement signal at the second sensor 8th generated and thus close to a certain rotational position. The structure 20 is as a recess / recess in the sensor part 17 brought in. The sensor part 17 is in this embodiment on the clutch cover 16 rotatably attached. For this serves directly the bolt 29 , namely as a rivet bolt, as a fastener to the sensor part 17 on the clutch cover 16 to fix.

After in conjunction with 2 illustrated second embodiment, it is also possible, the detection section 15 in another place. The coupling system 10 This second embodiment is in principle like that of the first embodiment constructed and functioning, which is why below only addresses the essential differences. The second sensor 8th does not show anymore, as in 1 implemented, a radially outward directed, but one in the axial direction to the actuator 5 aligned measuring field / measuring range, as with the reference arrow 31 indicated.

While in 1 the second sensor 8th radially outside the first sensor 7 is arranged, is the second sensor 8th to 2 radially within the first sensor 7 arranged. Also, both sensors were 7 and 8th in the first embodiment, fixed to the housing, ie on the housing 3 arranged, in this second embodiment is now only the first sensor 7 fixed to the housing and the second sensor on the slide 4 non-slip attached.

The detection section 15 is now a direct / integral part of the actuator 5 , The second sensor 8th acts here with several plate spring tongues 32 the plate spring 25 together with the capturing section 15 form. The plate spring tongues 32 the plate spring 25 are, as usual, several in the radial direction of the pivot bearing 28 inwardly extending tab-shaped projections distributed in the circumferential direction. Between two plate spring tongues 32 seen in the circumferential direction is a free space designed. The plate spring tongues 32 and the intervening spaces in the form of through holes in turn form the structure 20 off, which in turn is the detection section 15 represents. The second sensor 8th is like that on the slider 4 arranged shift-proof and so with his field of view 31 aligned, that the rotational position of the actuating element 5 reliable in operation, both with a relative axial displacement of the slide 4 to the actuator 5 , as well as a pivoting of the actuating element 5 , via the capturing section 15 ie the diaphragm spring tongues 32 and whose open spaces are detectable. Because the actuator 5 rotatably with the clutch cover 16 is connected, here is a rotational position of the first rotary part 9 reproducible.

Moreover, it is according to a third embodiment according to 3 , which in turn is essentially constructed and functioning like the first embodiment, implemented the detection section 15 as a fabric integral part of a anyway on the clutch cover 16 to provide arranged component. Here is a hook ring 18 on the clutch cover 16 attached, on the one hand together with the clutch cover 16 the pivot bearing 28 , instead of the bolt 29 to 1 , and on the other hand the detecting section 15 formed. The detection section 15 is, as already in 1 realized, in turn, as an axially extending sleeve portion formed having the structure 20 in the form of one or more recesses / -en on the periphery, so that the second sensor 8th in this regard, a reference to the rotational position of the first rotating part 9 calculated during operation. Additionally is in 3 , due to the formation of the hook ring 18 , also a support spring 19 on one of the sidewall area 26 opposite side of the plate spring 25 , between plate spring 25 and the hook ring 18 , clamped. This is the diaphragm spring 25 stable during operation, forming the pivot bearing 28 , against the clutch cover 16 created.

It should also be mentioned that it is also possible according to further embodiments, the detection section 15 on this support spring 19 or the clutch cover 16 provide yourself.

Also, the structure can 20 , in addition to a recess or through-hole, as another detectable pattern, such as a colored mark or a stepped surface roughness, etc., be formed.

In connection with 4 For the sake of completeness, it should also be mentioned that in a non-operating state, such as a motor test run, it is already possible for the first turned part 9 for determining the rotational position of the output shaft 11 consulted. It is possible the first rotary part 9 with a sensor part 17 connect to. This is indicated by the first turned part 9 at an axial, the output shaft 11 opposite end face 33 , at which usually in the engaged position of the friction lining 21 is present, a recording 34 for this sensor part 17 on. Another third sensor 35 is then arranged approximately on a test bench fixed area to the rotational position of the first rotary part 9 and thus indirectly the output shaft 11 tap off.

In other words, it is proposed according to the invention, a possibly already on the release system (the actuator 1 ) already existing sensor 7 (eg for Ausrückweg, pressure or force) with a speed / angle sensor 8th to combine the powertrain. Advantageously, the effort compared to the application of two separate sensors can be lowered. The two sensor functions can eg in a common housing 3 be housed. Under certain circumstances, it is possible to combine the electronic components (eg common board) and use only one common connection (cable or plug connection). It will reduce the cost of parts and installation costs.

The sensor sensor (detection section 15 ) can in a simple manner eg on the cover (clutch cover 16 ) be fixed. Under certain circumstances, this fixation can take place together with an already used assembly, eg riveting of the Belleville spring bolts 29 , At the flywheel 9 no patterning is required, the production cost is reduced and there are alternative possibilities, eg for the coupling attachment. For example, the usual for a truck application, protruding Zentrierrand be changed. Similarly, a corresponding flywheel change in applications of centrifugal pendulums on the flywheel 9 better usable. Should the sensor concern 15 also transmit the absolute rotational position of the drive train (with irregular patterning 20 possible) is a defined assembly of the coupling 2 on the flywheel 9 to secure. Realizable solutions for this are comparable to the targeted flywheel assembly on the crankshaft / output shaft 12 (eg by index pen).

In the illustration after 1 is the coupling system 10 with a sensor 15 provided, which is integrated into an existing component and forms a combined sensor. Components already on the clutch 2 are common (eg lid 16 , Support spring 19 , Hook ring 18 ) can also be suitably shaped and patterned 20 be provided, then as a sensor 15 to serve. Also the disc spring bolts used under certain circumstances 29 can fulfill this function. It eliminates the sensor coverage 15 as an additional item. In the illustration after 3 is for example a hook ring 18 to the plate spring bearing 28 used for this feature. Also, the coupling system 10 with the plate spring tongues 32 as sensor concern 15 to 2 be educated. It is also possible to use the diaphragm spring 5 . 25 for the function of the sensor transmitter 15 , The plate spring tongues 32 even give a usable pattern 20 , When the clutch actuation occurs an axial offset of the plate spring tongues 32 opposite to the fixed parts. Either a sensor principle is used that tolerates this movement or it is according to 2 used a solution in which the sensor 8th is moved in the clutch operation. For this purpose, the sensor 8th be fixed to the moving parts of the actuating system (eg on the slide 4 / Piston the release bearing 6 emotional).

Combined with 4 is the flywheel 10 with a temporary sensor 17 connected. Because, if the sensor technology for the rotational speed or the rotational angle of the drive train is displaced into the coupling components or the disengagement system, under certain circumstances measures may be required in order to be able to work on the preassembled engine block 36 to be able to record the required parameters (for example during the engine test run).

In general, the solution according to the invention can be advantageously used when the actuation system 1 already a sensor 7 has. The solution can thus, inter alia, in pneumatic Zentralausrückern with displacement sensor 7 (standard truck application), hydraulic central release or semi-hydraulic release, with displacement, force and / or pressure sensors 7 , foot actuation, actuator actuation or power assistance, and electromechanical release systems (possibly also lever actuators).

LIST OF REFERENCE NUMBERS

1, 1 '

 actuator

2, 2 '

 clutch

3

 casing

4

 pusher

5

 actuator

6

 operation seat

7

 first sensor

8, 8 '

 second sensor

9, 9 '

 first turned part

10, 10 '

coupling system

11

 output shaft

12

 gear shaft

13

 second rotary part

14

 Kupplungsglocke

15

 detecting section

16

 clutch cover

17

 sensor part

18

 hook ring

19

 support spring

20

 structure

21

 friction lining

22

 hub part

23

 axis of rotation

24

 pressure plate

25

 Belleville spring

26

 Sidewall region

27

 accommodation space

28

 pivot bearing

29

 bolt

30

 contact point

31

 reference arrow

32

 Belleville spring tongue

33

 front

34

 admission

35

 third sensor

36

 block

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 10039242 A1 [0002]

Claims (10)

Actuating device ( 1 ) for a clutch ( 2 ) of a motor vehicle drive train, with a housing ( 3 ), relative to this housing ( 3 ) slidably mounted slide ( 4 ), one on the slider ( 4 ) slidably received and for transmitting a displacement force to an actuator ( 5 ) of the coupling ( 2 ) prepared actuating bearing ( 6 ), as well as one, the displacement position of the slide ( 4 ) relative to the housing ( 3 ), the first sensor ( 7 ), characterized in that a second sensor ( 8th ) is configured and arranged so that by him a rotational position of a during operation of the clutch ( 2 ) relative to the housing ( 3 ) rotating coupling component ( 9 ) is detectable. Actuating device ( 1 ) according to claim 1, characterized in that the first sensor ( 7 ) and / or the second sensor ( 8th ) within the housing ( 3 are arranged / is. Actuating device ( 1 ) according to claim 1, characterized in that the second sensor ( 8th ) sliding against the slide ( 4 ) is attached. Actuating device ( 1 ) according to one of claims 1 to 3, characterized in that the first sensor ( 7 ) and the second sensor ( 8th ) have a common board. Actuating device ( 1 ) according to one of claims 1 to 4, characterized in that the first sensor ( 7 ) and the second sensor ( 8th ) have a common electronic supply line section, which is connected at one end to an electrical connection. Coupling system ( 10 ) for a motor vehicle drive train, with a clutch ( 2 ), where the coupling ( 2 ), for non-rotatable connection with an output shaft ( 11 ) of an internal combustion engine configured, first rotary part ( 9 ), for non-rotatable connection to a transmission shaft ( 12 ) geared and relative to the first rotary part ( 9 ) slidably disposed, second rotary member ( 13 ) and a displacement position of the second rotary part ( 13 ) presetting actuator ( 5 ), and with an actuating device ( 1 ) according to one of claims 1 to 5, wherein the actuating bearing ( 6 ) to the actuator ( 5 ) and the second sensor ( 8th ) with a detection section ( 15 ), which rotatably with the first rotary part ( 9 ) or the second rotary part ( 13 ) is coupled, for detecting the rotational position of the first rotary part ( 9 ) or the second rotary part ( 13 ) cooperates. Coupling system ( 1 ) according to claim 6, characterized in that the detection section ( 15 ) rotatably with the first rotary part ( 9 ) and the second sensor ( 8th ) so relative to the clutch ( 2 ) is arranged, that the detection section ( 15 ) within a measuring range of the second sensor ( 8th ) lies. Coupling system ( 1 ) according to claim 6 or 7, characterized in that the detection section ( 15 ) by means of a clutch cover ( 16 ) of the coupling ( 2 ) rotatably with the first rotary part ( 9 ) connected is. Coupling system ( 1 ) according to claim 8, characterized in that the detection section ( 15 ) separately on the clutch cover ( 16 ) attached sensor part ( 17 ), or a stoffeinteiliger part of an existing coupling component, such as the clutch cover ( 16 ) itself, one the actuator ( 5 ) pivotable on the clutch cover ( 16 ) bearing hook ring ( 18 ), one the actuator ( 5 ) relative to the clutch cover ( 16 ) elastically biasing support spring ( 19 ), or the non-rotatably with the clutch cover ( 16 ) connected control element ( 5 ) is itself. Coupling system ( 1 ) according to one of claims 6 to 9, characterized in that the detection section ( 15 ) one by means of the second sensor ( 8th ) detectable structure ( 20 ), such as a surface roughness, a color mark, or a recess.

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