DE102018001858A1 - Torque transmission arrangement, drive train with such a torque transmission arrangement and centrifugal pendulum device for such a torque transmission arrangement - Google Patents

Abstract

The invention relates to a torque transmission arrangement (4) for forming a torque transmission path (6) from an internal combustion engine (8) to a transmission (10) comprising a centrifugal pendulum device (22) with a first component (24) arranged in the torque transmission path (6) the internal combustion engine (8) is rotatably connectable to a second component (26) arranged outside the torque transmission path (6) on which at least one pendulum mass (28) is pivotably arranged, and an overload coupling (30) for coupling and decoupling of the first and second components (30). 24, 26), a in the torque transmission path (6) on the centrifugal pendulum means (22) following separating clutch (32) for selectively coupling a clutch input side (34) which is in rotationally driving connection with the first component (24) with a coupling output side (36), which is rotatably engageable with the transmission (10), and an electric machine (46) with the coupling output side (36) is in rotary driving connection. In addition, the present invention relates to a drive train (2) for a hybrid vehicle and a centrifugal pendulum device (22) for a torque transmission arrangement (4) or a drive train (2).

Description

The present invention relates to a torque transmission arrangement for forming a torque transmission path from an internal combustion engine to a transmission. Moreover, the present invention relates to a drive train for a hybrid vehicle with such a torque transmission arrangement and a centrifugal pendulum device for such a torque transmission arrangement or such a drive train.

In practice, torque transmission assemblies for motor vehicles for forming a torque transmission path from an internal combustion engine to a transmission are known. Torsional vibration dampers, for example, are used within the known torque transmission arrangements, in which a primary element arranged in the torque transmission path is coupled in a torsionally elastic manner via spring arrangements to a secondary element likewise arranged in the torque transmission path in order to damp torque shocks and in this way also avoid increased stress on the components within the torque transmission path. Moreover, torsional vibration dampers in the form of centrifugal pendulum devices are also used within the known torque transmission arrangements. In the known centrifugal pendulum devices, a component thereof is arranged within the torque transmission path, so that it is acted upon by said torque pulses. On the component itself, which can also be referred to as pendulum mass carrier, a plurality of pendulum masses are arranged, which can oscillate or oscillate relative to the pendulum mass carrier to counteract torque surges or Drehzahlunguniformity of the pendulum mass carrier. In significant torque surges or Drehzahlunguniformities guided on the pendulum mass carrier pendulum masses can strike with great force on the pendulum mass carrier in its final position, which not only leads to increased noise, but also an increased stress on the pendulum mass itself or the pendulum mass support conditions, which ultimately also can lead to a component failure.

In order to overcome the above problem of noise and increased stress in the area of the centrifugal pendulum device, centrifugal pendulum devices have been created, which essentially consists of a first component which can be connected to the drive shaft of an internal combustion engine, a second component, the same as the first component is arranged within the torque transmission path and on which at least one pendulum mass is arranged pendulum, and a slip clutch for coupling and decoupling of the first and second component is composed. If the torque impulses on the part of the internal combustion engine are too strong, at least partial decoupling of the first component and the second component occurs via the slip clutch, so that the second component is relieved of load with the pendulum masses guided thereon. Thus, the second component and the pendulum masses are less stressed in phases of increased torque shocks and there is less noise.

It is an object of the present invention to provide a torque transmitting device for forming a torque transmission path from an internal combustion engine to a transmission for the powertrain of a hybrid vehicle having a centrifugal pendulum device, with a particularly low stress of the centrifugal pendulum device and a low noise is to be ensured. In addition, the present invention has the object to provide a drive train for a hybrid vehicle with such an advantageous torque transmission arrangement. In addition, the present invention seeks to provide an advantageous centrifugal pendulum device for such a torque transmission arrangement or such a drive train, which ensures a particularly reliable operation.

This object is achieved by the features specified in the patent claims 1, 7 and 8, respectively. Advantageous embodiments of the invention are the subject of the dependent claims.

The torque transmission arrangement according to the invention serves to form a torque transmission path from an internal combustion engine to a transmission. The torque transmission arrangement has a centrifugal pendulum device. The centrifugal pendulum device has a first component which is arranged in the torque transmission path and can be connected to the internal combustion engine in a torque-engaging manner. If, as described below, a component is mentioned, then such a component does not necessarily have to be of one-piece construction, but rather also comprises assemblies which are composed of two or more parts which are connected to each other in a rotationally fixed manner. The first component which can be connected to the internal combustion engine can, for example, have a hub, via which the first component can be brought into rotational drive connection with an internal combustion engine or its output side. The rotary driving connection does not necessarily have to be immediate Rather, the first component can also indirectly via another component of the torque transmission arrangement within the torque transmission path with the internal combustion engine or its output side are connected drehmitnahme. In addition, the centrifugal pendulum device to a second component, on which at least one pendulum mass is arranged pendulum, wherein in the second component can also be spoken by a pendulum mass carrier. Thus, the at least one pendulum mass relative to the second component or pendulum mass carrier is pendulum or movable. In this case, the second component is arranged outside the torque transmission path, so that via the second component, which - as already indicated above - can also be formed by an assembly, no torque from the engine to the transmission is transferable. Furthermore, the centrifugal pendulum device has an overload clutch for coupling and decoupling of the first and second component in order to relieve the second component and arranged thereon at least one pendulum mass with increased torque surges or Drehzahlunguniformities, and thus to reduce the stress and noise in this area. Even with the overload clutch closed, which may be formed, for example, as a frictional clutch or slip clutch, no torque is transmitted between the first component and the second component, which would be transferable to the transmission, so that it can also be said that the overload clutch outside of the torque transmission path acts even if the first member is applied with the torque of the torque transmission path. In the torque transmission path, a separating clutch following the centrifugal force pendulum device is furthermore provided, for example a disc clutch or multi-disc clutch which has a clutch input side and a clutch output side. The separating clutch is used for selective coupling, ie the coupling or decoupling, a clutch input side with or from the coupling output side. In this case, the clutch input side is in rotary driving connection with the first component of the centrifugal pendulum device. Of these, not only embodiments are detected in which the first component of the centrifugal pendulum device and the clutch input side are formed separately from each other, but also those embodiments in which the first component and the clutch input side are integrally formed with each other. The clutch output side of the separating clutch, however, can be connected to a transmission within the drive train rotationally connected, wherein the coupling output side is both direct and indirectly connected to the gear or its input side torque. Thus, here too, the coupling output side, for example, have a hub, which can be indirectly or indirectly connected to the input side of the transmission rotationally connected. In addition, the torque transmission arrangement comprises an electric machine, which is in rotary driving connection with the coupling output side, whereby here too the coupling output side can be indirectly or directly in rotary driving connection with the electric machine. The electric machine can preferably be operated both as a generator and as a motor.

Within the described torque transmission arrangement, the centrifugal pendulum device is first - as in the prior art - suitable to counteract torque surges and torque irregularities introduced by the internal combustion engine in the torque transmission assembly, the overload coupling can decouple the second component of the first component at least partially to a To prevent increased stress on the second component and the at least one pendulum mass and increased noise. In addition, it is ensured by the arrangement of the centrifugal pendulum device within the torque transmission arrangement that the stress and noise in the region of the centrifugal pendulum device is ensured in other operating states of the torque transmission arrangement or a drive train with such a torque transmission arrangement. This becomes particularly clear when the electric machine is operated as a motor to start the engine. In this case, first the separating clutch is opened to decouple the first component of the centrifugal pendulum device and the clutch input side of the clutch output side, which can then be rotated by the electric machine in rotation. If the clutch output side has reached the speed required to start the engine or the required torque, the clutch can be closed quickly or jerkily, in which case the overload clutch can prevent increased torque shock on the second component of the centrifugal pendulum device and its pendulum masses by this the second component together with the pendulum masses arranged thereon are at least partially decoupled from the first component. Consequently, it is also ensured during a starting process of the internal combustion engine that the centrifugal pendulum device not only relieved and thus less stressed, but also an increased noise during the starting process can be avoided.

In an advantageous embodiment of the invention Torque transmission arrangement is the electric machine or its input or output side via a traction mechanism with the clutch output side in rotary driving connection. Thus, the coupling output side of the separating clutch may for example be provided with a corresponding gear to stand on the traction means and another gear with the shaft of the electric machine in rotary driving connection. Also, the electric machine can indirectly via the traction mechanism with the clutch output side are in rotary driving connection. The traction mechanism is preferably a chain transmission in order to ensure reliable transmission of the torque via the traction mechanism.

In a preferred embodiment of the torque transmission arrangement according to the invention, a torsional vibration damper is arranged in the torque transmission path in front of the first component whose damper input side can be brought indirectly or directly into rotary driving connection with the internal combustion engine and the damper output side is indirectly or directly in rotary driving connection with the first component of the centrifugal pendulum device. As a result, any torsional vibrations or Drehzahlunguniformities can be counteracted particularly effective, especially if they originate from the internal combustion engine. Also not only variants are included in this embodiment, in which the damper output side and the first component of the centrifugal pendulum device are formed separately, but also variants are included, in which the damper output side and the first component of the centrifugal pendulum device are at least partially or completely formed integrally with each other.

In order to enable a particularly meaningful use of the torque transmission arrangement in a drive train for a hybrid vehicle, in a particularly preferred embodiment of the torque transmission arrangement according to the invention in the torque transmission path behind the clutch a second clutch for selectively coupling a second clutch input hub, which is indirectly or directly in rotary driving connection with the clutch output side , with a second coupling output side, which can be connected directly or indirectly with the gear Drehmitnahme arranged. In this way, a decoupling of the transmission of both the electric machine and the internal combustion engine is possible, as it makes sense during the starting process and possibly also during operation of the electric machine as a generator during standstill of the motor vehicle. In turn, variants of this embodiment are also encompassed in which the coupling output side of the separating clutch and the second coupling output side of the second separating clutch are formed entirely or partially in one piece with one another. The electric machine can also be in rotary driving connection with the clutch output side of the separating clutch by means of the second clutch input side of the second separating clutch, and thus indirectly connected to the clutch output side by rotation.

In a further advantageous embodiment of the torque transmission arrangement according to the invention, the overload clutch is designed as an actuatable clutch. This means that the overload clutch can be selectively controlled by means of an actuating and / or control device in order to open or close it. As a result, although the apparatus design is greater, but a targeted operation is possible to change the effect of centrifugal pendulum device targeted, even if, for example, no increased torque surges are present, which could lead to increased stress and noise. Notwithstanding, such a controller may of course also operate on the overload clutch based on measured operating values within the torque transmitting assembly or the powertrain.

As an alternative to the embodiment described above, the overload clutch in a further preferred embodiment of the torque transmission arrangement according to the invention is designed as an automatically operating clutch, preferably as a friction clutch. Thus, it is ensured in this embodiment that the overload clutch opens without targeted control and thus relieves the second component together with the at least one pendulum mass when the torque difference between the first and second component exceeds a predetermined level. This ensures a particularly simple and compact construction of the overload clutch.

While overload clutches are formed in the prior art as a purely friction clutches working clutches, the overload clutch is formed in a particularly advantageous embodiment of the torque transmission assembly according to the invention as a frictionally and positively acting clutch. In this way, a particularly secure coupling of the first and second component is ensured with closed overload clutch. Alternatively, the overload clutch may be designed as a purely positive-fit clutch, although a frictionally and positively acting clutch is preferred, especially since this also enables intermediate positions in which a torque of the first component is transmitted in a reduced size to the second component.

The drive train according to the invention is in particular a drive train for a hybrid vehicle. The drive train has a torque transmission arrangement of the type according to the invention and an internal combustion engine, which is indirectly or directly in rotary driving connection with the first component, preferably via the aforementioned torsional vibration damper.

In a preferred embodiment of the powertrain for a hybrid vehicle according to the invention, a transmission is provided which is rotationally engaged with the clutch output side of the disconnect clutch, preferably via the second disconnect clutch, to provide a powertrain for a hybrid vehicle in which the transmission both via the second disconnect clutch is separable from the internal combustion engine as well as from the electric machine.

The centrifugal pendulum device according to the invention is designed for a torque transmission arrangement or a drive train, preferably for a torque transmission arrangement or a drive train of the type according to the invention. The centrifugal pendulum device has a first component, a second component on which at least one pendulum mass is arranged pendulum, and an overload clutch for coupling and decoupling from the first and second component. In this case, the overload clutch is designed as a friction and form-fitting coupling or as a form-fitting coupling, as has already been set out above with reference to an embodiment of the torque transmission arrangement according to the invention. As a result, a particularly secure operation of the overload clutch, especially in the closed state, possible.

In a preferred embodiment of the centrifugal pendulum device according to the invention, the overload coupling has at least one latching projection on the one hand and at least one latching recess on the other hand in order to be able to work at least partially or exclusively positively. Thus, the latching projection is transferred from an open position outside the latching recess while achieving an at least partial positive connection between the first and second component in a closed position within the latching recess or transferred. In this embodiment, the at least one latching projection may be provided on the first or second component while the latching recess is provided on the second or first component. It is also possible to provide both latching projections and latching recesses on the first component, while correspondingly assigned latching recesses and latching projections are provided on the second component.

In a particularly preferred embodiment of the centrifugal pendulum device according to the invention the latching projection is biased in the closed position, so that the overload clutch is automatically or automatically closed at low torque differences between the first and second component or is. It is irrelevant whether a corresponding biasing means with the latching recesses receiving component or the latching projections receiving component is operatively connected.

In a particularly preferred embodiment of the centrifugal pendulum device according to the invention, the latching projection and the latching recess cooperate in such a way that the latching projection can be automatically displaced from the latching recess when a predetermined torque difference between the first and second components is exceeded against the biasing force. This can be done for example by an inclined flank of the projection and / or the detent recess, which points in the circumferential direction.

In a further advantageous embodiment of the centrifugal pendulum device according to the invention, the latching projection and the latching recess are arranged opposite one another in the axial direction. Alternatively or additionally, a plurality of latching projections and latching recesses are provided, which are each arranged sequentially in the circumferential direction to provide a plurality of interacting latching projections and latching recesses, which ensure a secure torque transmission between the first and second component when the overload clutch is closed.

In order to achieve a particularly secure torque transmission between the first component and the second component when the overload clutch is closed, at least one first detent projection acts with at least one first detent recess in a first radial plane and at least one second detent projection with at least one second detent recess in an axially spaced second from the first radial plane Radial plane together. In this context, it has proven to be particularly advantageous in terms of production and operation when the first and second radial plane are formed on opposite sides of the first or second component.

• 1 eine schematische Seitenansicht eines Antriebsstrangs für ein Hybridfahrzeug mit einer Ausführungsform der erfindungsgemäßen Drehmomentübertragungsanordnung,
• 2 eine teilweise Seitenansicht der Fliehkraftpendeleinrichtung aus 1 in einer ersten Ausführungsvariante in geschnittener Darstellung,
• 3 die Fliehkraftpendeleinrichtung von 2 mit der Überlastkupplung in einer Öffnungsstellung,
• 4 eine geschnittene Darstellung entlang der Schnittlinie A-A aus 2 und
• 5 eine teilweise Seitenansicht der Fliehkraftpendeleinrichtung aus 1 in einer zweiten Ausführungsvariante in geschnittener Darstellung.

The invention is explained in more detail below with reference to exemplary embodiments with reference to the accompanying drawings. Show it:

• 1 FIG. 2 shows a schematic side view of a drive train for a hybrid vehicle with an embodiment of the torque transmission arrangement according to the invention, FIG.
• 2 a partial side view of the centrifugal pendulum device 1 in a first embodiment in a sectional representation,
• 3 the centrifugal pendulum device of 2 with the overload clutch in an open position,
• 4 a sectional view along the section line AA out 2 and
• 5 a partial side view of the centrifugal pendulum device 1 in a second embodiment in a sectional representation.

1 shows a drive train 2 with a torque transmission arrangement 4 for forming a torque transmission path 6 from an internal combustion engine 8th to a transmission 10 wherein the torque transmission path 6 indicated by a dotted line extending from the engine 8th to the transmission 10 extends. The internal combustion engine 8th and the gearbox 10 are there as components of the powertrain 2 for a hybrid vehicle while the torque transmitting assembly 4 the partial or complete formation of the intermediate torque transmission path 6 serves.

The internal combustion engine 8th has an exit side 12 on, for example, from an output hub of the crankshaft of the internal combustion engine 8th can be formed. The exit side 12 of the internal combustion engine 8th stands along the torque transmission path 6 with a torsional vibration damper 14 the torque transmission arrangement 4 in rotary driving connection. More specifically, the output side stands 12 with a damper input side 16 of the torsional vibration damper 14 in rotary driving connection. Thus, the damper input side 16 the torque transmission arrangement 4 with the internal combustion engine 8th torque-connectable or torque-connected. In addition, the torsional vibration damper has 14 one in the torque transmission path 6 arranged damper output side 18 on that over a feather device 20 torsionally flexible with the damper input side 16 is coupled. Thus, both the spring device 20 as well as the damper output side 18 within the torque transmission path 6 arranged.

On the torsional vibration damper 14 follows a centrifugal pendulum device 22 the torque transmission arrangement 4 , The centrifugal pendulum device 22 indicates a torque transmission path 6 arranged first component 24 in the torque transmission path 6 behind the torsional vibration damper 14 is arranged and with the damper output side 18 of the torsional vibration damper 14 is in rotary driving connection. The first component 24 the centrifugal pendulum device 22 is - here indirectly via the torsional vibration damper 14 - with the combustion engine 8th or its output side 12 torque-connectable or torque-connected. In addition, the centrifugal pendulum device 22 a second component 26 on, with the second component 26 outside the torque transmission path 6 between internal combustion engine 8th and gear 10 is arranged so that over the second component 26 no torque from the engine 8th on the gearbox 10 is transferable. On the second component 26 is at least one pendulum mass 28 arranged pendulum, so that the pendulum mass 28 relative to the second component 26 can commute, as is already known from the prior art. Thus, the second component 26 Also referred to as pendulum mass carrier.

Between the first component 24 and the second component 26 the centrifugal pendulum device 22 is an overload clutch 30 arranged, the coupling and at least partially decoupling of the first and second component 24 . 26 serves or can serve, if strong torque shocks or Drehgleichleichförmigkeiten on the first component 24 Act. So is the input side of the overload clutch 30 over the first component 24 with the torque along the torque transmission path 6 acted upon, but also transmits the overload clutch 30 in the coupled or closed state no torque, starting from the internal combustion engine 8th on the gearbox 10 would be transferable, especially as to be coupled or coupled second component 26 outside the torque transmission path 6 is arranged. On possible variants of the overload clutch 30 will be closer later with reference to the 2 to 5 received.

In the further course of the torque transmission path 6 follows the centrifugal pendulum device 22 one in the torque transmission path 6 arranged first disconnect clutch 32 , The first disconnect clutch 32 has a first clutch input side 34 and a first coupling output side 36 on, which are selectively coupled with each other. This is the first clutch input side 34 with the first component 24 the centrifugal pendulum device 22 in rotary driving connection, while the first coupling output side 36 - here indirectly - with the gearbox 10 is connectable to a torque converter or to a driver.

More specifically, in the torque transmission path 6 behind the first separating clutch 32 a second disconnect clutch 38 with a second clutch input side 40 and a second clutch output side 42 arranged, wherein the second clutch input side 40 with the second coupling output side 42 optionally coupled or can be connected to the driver. Here is the second clutch input side 40 with the first coupling output side 36 the first disconnect clutch 32 in rotary driving connection, while the second coupling output side 42 with an input side 44 of the transmission 10 is connectable to a torque converter or to a driver. The entrance page 44 of the transmission 10 For example, from an input hub of a transmission shaft of the transmission 10 be formed.

In addition, the torque transmission arrangement 4 an electric machine 46 on that with the first clutch exit side 36 the first disconnect clutch 32 is indirectly or directly in rotary driving connection. More specifically, the electric machine stands 46 via a traction mechanism 48 with the first coupling output side 36 in rotary driving connection, wherein it is in the traction mechanism 48 preferably is a chain transmission. So has the traction mechanism 48 a gear wheel 50 , optionally a sprocket, with the input or output side 52 the electric machine 46 is in rotary driving connection, and a gear 54 on, with the first clutch output side 36 the first disconnect clutch 32 is indirectly or directly in rotary driving connection, on, wherein the gear wheel 50 and the gear wheel 54 , optionally also a sprocket, via a circulating traction means 56 , optionally a chain, are drehmitnahmeverbunden. The electric machine 46 can be operated as a generator for power generation or as a motor, for example as a starter motor.

Marriage closer to the operation of the torque transmission arrangement 4 or the drive train 2 will be described below with reference to the 2 to 5 various embodiments of the centrifugal pendulum device 22 be described, the 2 to 4 show a first embodiment.

In the first embodiment of the centrifugal pendulum device 22 is the overload clutch 30 as a frictionally and positively acting clutch, alternatively, so a purely positive working clutch formed. The second component 26 is formed substantially flange-like or annular disk-shaped, wherein the individual pendulum mass 28 both a first pendulum mass section 58 in the axial direction 60 next to the second component 26 is arranged, as well as a second pendulum mass section 62 having, in the axial direction 60 opposite axial direction 64 next to the second component 26 is arranged. Here are the two pendulum mass sections 58 . 62 over at least one connecting strut 66 attached to each other, extending through a recess 68 in the second component 26 extends, preferably without - regardless of the pendulum position of the pendulum mass 28 - the edge of the recess 68 to touch. In addition, at least one rolling body extends 70 through a guide 72 in the second component 26 and in each case a guide 74 . 76 in the pendulum mass sections 58 and 62 , where the guides 72 . 74 . 76 are formed such that the pendulum mass 28 relative to the second component 26 can perform a pendulum motion, in which a movement in the circumferential directions 78 . 80 and the radial directions 82 . 84 the centrifugal pendulum device 22 overlap. Although not shown in detail, so are preferably two or more pendulum masses 28 the type shown on the second component 26 arranged, the two or more pendulum masses 28 preferably in the circumferential direction 78 . 80 evenly spaced from each other on the second component 26 are arranged.

The first component 24 on the other hand is non-rotatable on a hub 86 attached, with the hub 86 for example, from the output hub of the damper output side 18 , the input hub of the first clutch input side 34 or may be formed by a standalone hub that connects to the damper output side 18 and the first clutch input side 34 is in rotary driving connection.

To a positive and frictional overload clutch 30 to create, are on the first component 24 several in the axial direction 60 projecting first locking projections 88 provided in the circumferential direction 78 . 80 evenly distributed on the first component 24 are arranged. The first locking projections 88 are again several in the circumferential direction 78 . 80 evenly distributed on the second component 26 arranged first locking recesses 90 assigned, wherein the first locking recesses 90 in the axial direction 64 point and thus the first locking projections 88 in the axial direction 60 . 64 are arranged opposite one another. In addition, several are in the circumferential direction 78 . 80 evenly distributed second locking projections 92 on the first component 24 provided in the axial direction 64 projecting, wherein the second locking projections 92 in the circumferential direction 78 . 80 evenly distributed second locking recesses 94 on the second component 26 are assigned, in the axial direction 60 are open and thus the second locking projections 92 in the axial direction 60 . 64 are arranged opposite one another. So can the first locking projections 88 from an open position outside the first locking recesses 90 , in the 3 is indicated, while achieving an at least partial positive connection between the first and second component 24 . 26 in a closed position within the first locking recesses 90 be transferred, the closed position in the 2 and 4 is indicated. In a corresponding manner, the second locking projections 92 from an open position outside the second locking recesses 94 , in the 3 is indicated, while achieving an at least partial positive connection between the first and second component 24 . 26 in a closed position within the second locking recesses 94 be transferred, which in turn into the 2 and 4 is indicated.

In the embodiment of the 2 to 4 as well as in the embodiment described in more detail later 5 , is the overload clutch 30 designed as an automatic clutch, more precisely as a slip clutch. So are the first locking projections 88 via a spring device 96 and the second locking projections 92 via a spring device 98 biased in the respective closed position. Also, the locking projections 88 . 92 or / and the detent recesses 90 . 94 designed such that when exceeding a predetermined torque difference between the first component 24 and the second component 26 the locking projections 88 . 92 against the biasing force of the respective spring device 96 . 98 in the axial direction 64 or. 60 from the associated detent recess 90 or. 94 can be displaced. In the illustrated embodiment, this is achieved in that the in the circumferential direction 80 . 78 pointing flanks 100 the locking projections 88 . 92 or / and locking recesses 90 . 94 beveled, so that at the mentioned torque difference one in the circumferential direction 78 or 80 acting circumferential force in one against the spring force of the respective spring means 96 or 98 acting axial force is converted, which ultimately to push out of the respective locking projection 88 . 92 from the associated detent recess 90 . 94 leads.

Out 4 It can also be seen that the first latching projections 88 in a first radial plane 102 with the first locking recesses 90 interact while the second locking projections 92 in a second radial plane 104 with the second locking recesses 94 interact, with the two radial planes 102 . 104 in the axial direction 60 . 64 spaced apart and on opposite sides of the second component 26 are formed.

Although with reference to the 2 to 4 described overload clutch 30 on the one hand a form-fitting part and on the other hand a frictional engagement part - here between the flanks 100 the locking projections 88 . 92 and the detent recesses 90 . 94 - Has, so it can still be spoken of a slip clutch that works automatically. Alternatively, however, it would also be conceivable if instead of the spring devices 96 . 98 a selectively controllable actuator is present, so that the overload clutch 30 could also be designed as an actuatable clutch. Such an actuator could be for example a hydraulic piston-cylinder arrangement.

5 shows an alternative embodiment variant of the centrifugal pendulum device 22 in which the overload clutch 30 is designed as a purely frictionally engaged clutch. In the particularly simple embodiment variant according to 5 are on both sides of the second component 26 spring means 106 . 108 provided, wherein the spring means 106 in the axial direction 64 on the first component 24 and in the axial direction 60 on the second component 26 supportable or supported while the spring means 108 in the axial direction 60 on the first component 24 and in the opposite axial direction 64 on the second component 26 can be supported or supported. To here a particularly effectively working spring device 106 or. 108 to provide, are the spring devices 106 . 108 preferably formed as disc springs, wherein the friction between the respective spring means 106 . 108 and the first component 24 on the one hand or the second component 26 on the other hand, the frictional connection between the first and second component 24 . 26 can generate. It is also preferred, the spring devices 106 . 108 rotatably on the first component 24 or the second component 26 to arrange.

The centrifugal pendulum device 22 the torque transmission arrangement 4 in 1 is capable of torque surges or rotational nonuniformity, that of the internal combustion engine 8th originate, compensate, with strong torque surges of the internal combustion engine 8th can cause the overload clutch 30 opens or the locking projections 88 . 92 from the detent recesses 90 . 94 be displaced. Thus, the second component 26 thereby of the first component 24 at least partially decoupled, so that the second component 26 together with the pendulum masses 28 is relieved. More specifically, a too strong striking the respective pendulum mass 28 in its final position on the second component 26 prevents the stress on the second component 26 as well as the pendulum masses 28 reduced and the noise in the area of the centrifugal pendulum device 22 is reduced.

In addition, the centrifugal pendulum device 22 but also in a further operating state of the torque transmission arrangement 4 or the drive train 2 relieved. Should the electric machine 46 For example, as a motor or starter motor for the internal combustion engine 8th are used, so first the first disconnect clutch 32 and the second disconnect clutch 38 open. Following this, the electric machine puts 46 the first coupling output side 36 the first disconnect clutch 32 over the traction mechanism 48 in rotation to the desired speed or the desired torque on the first clutch output side 36 is constructed. To the internal combustion engine 8th with the help of the electric machine 46 to start, then becomes the first disconnect clutch 32 closed quickly or jerkily, leaving the exit side 12 of the internal combustion engine 8th over the torque transmission path 6 between the first disconnect clutch 32 and the output side 12 rotated and thus started. In this rapid closing of the first disconnect clutch 32 can that on the first component 24 acting and of the electric machine 46 introduced torque be so large that the pendulum masses 28 in its end position on the second component 26 at high speed against the second component 26 strike, causing both the second component 26 as well as the pendulum masses 28 would be significantly stressed and there would be a strong noise. However, in this case, the overload clutch opens to the second component 26 and the pendulum masses 28 from the first component 24 decouple and thus prevent overuse and noise. In other words, the advantageous arrangement of the centrifugal pendulum device requires 22 within the torque transfer assembly 4 also for the operating state of the starting of the internal combustion engine 8th through the electric machine 46 a relief of the centrifugal pendulum device 22 and thus an increased life of the same.

LIST OF REFERENCE NUMBERS

2

powertrain

4

Torque transmitting assembly

6

Torque transmission path

8th

internal combustion engine

10

transmission

12

output side

14

torsional vibration damper

16

Damper input side

18

Damper output side

20

spring means

22

Centrifugal pendulum device

24

first component

26

second component

28

pendulum mass

30

Overload clutch

32

first disconnect clutch

34

first clutch input side

36

first coupling output side

38

second separating clutch

40

second clutch input side

42

second coupling output side

44

input side

46

electric machine

48

traction drives

50

Pinion

52

Input / output side

54

Pinion

56

traction means

58

first pendulum mass section

60

axial direction

62

second pendulum mass section

64

axial direction

66

connecting strut

68

recess

70

roll body

72

guide

74

guide

76

guide

78

circumferentially

80

circumferentially

82

radial direction

84

radial direction

86

hub

88

first locking projections

90

first locking recesses

92

second locking projections

94

second locking recesses

96

spring means

98

spring means

100

flanks

102

first radial plane

104

second radial plane

106

spring means

108

spring means

Claims (10)

A torque transmission assembly (4) for forming a torque transmission path (6) from an internal combustion engine (8) to a transmission (10) a centrifugal pendulum device (22) having a first component (24) arranged in the torque transmission path (6) and connectable to the internal combustion engine (8), a second component (26) arranged outside the torque transmission path (6), to which at least one pendulum mass (28 ) is arranged pendulum, and an overload clutch (30) for coupling and decoupling of first and second component (24, 26), in the torque transmission path (6) on the centrifugal pendulum device (22) following separating clutch (32) for selectively coupling a clutch input side (34) which is in rotationally driving connection with the first component (24), with a clutch output side (36) connected to the transmission ( 10) is connectable, and an electric machine (46) rotationally engaged with the clutch output side (36). Torque transmission arrangement (4) according to Claim 1 , characterized in that the electric machine (46) via a traction mechanism (48), preferably a chain transmission, with the coupling output side (36) is in rotary driving connection. Torque transmission arrangement (4) according to one of Claims 1 or 2 , characterized in that a torsional vibration damper (14) is arranged in the torque transmission path (6) in front of the first component (24) whose damper input side (16) is connectable to the internal combustion engine (8) and whose damper output side (18) is connected to the first component (24 ) is in rotary driving connection. Torque transmission arrangement (4) according to one of the preceding claims, characterized in that in the torque transmission path (6) behind the separating clutch (32) has a second separating clutch (38) for selectively coupling a second clutch input side (40) to the clutch output side (36) in rotary driving connection is, with a second coupling output side (42) which is rotatably connected to the transmission (10), is arranged. Torque transmission arrangement (4) according to one of the preceding claims, characterized in that the overload clutch (30) is designed as an actuatable or automatically operating clutch, preferably as a friction clutch. Torque transmission arrangement (4) according to one of the preceding claims, characterized in that the overload clutch (30) is a frictionally and positively acting clutch or a form-fitting coupling. A power train (2) for a hybrid vehicle having a torque transfer assembly (4) according to any one of the preceding claims and an internal combustion engine (8) in rotary driving engagement with the first member (24), preferably via the torsional vibration damper (14), more preferably Gear (10) is provided, which is in rotary driving connection with the coupling output side (36) of the separating clutch (32), optionally via the second separating clutch (38). Centrifugal pendulum device (22) for a torque transmission arrangement (4) or a drive train (2), preferably for a torque transmission arrangement (4) or a drive train (2) according to one of the preceding claims, comprising a first component (24), a second component (26) to which at least one pendulum mass (28) is arranged pivotably, and an overload clutch (30) for coupling and decoupling of the first and second component (24, 26), characterized in that the overload clutch (30) as frictionally and positively acting clutch or is designed as a form-fitting coupling. Centrifugal pendulum device (22) after Claim 8 , characterized in that the overload clutch (30) has at least one latching projection (88; 92) on the one hand and at least one latching recess (90; 94) on the other hand, wherein the latching projection (88; 92) protrudes from an open position outside the latching recess (90; 94) with the achievement of an at least partial positive connection between the first and second component (24, 26) into a closed position within the latching depression (90, 94) is transferred or transferred, wherein the latching projection (88, 92) is preferably biased in the closed position and the latching projection ( 88; 92) and the latching recess (90; 94) particularly preferably cooperate in such a way that the latching projection (88; 92) automatically moves out of the latching depression (90; 92) against a predetermined torque difference between the first and second components (24,26). 94) is displaceable. Centrifugal pendulum device (22) according to one of Claims 8 or 9 , characterized in that the latching projection (88; 92) and the Latching recess (90, 94) arranged opposite each other in the axial direction (60, 64) or / and a plurality of latching projections (88, 92) and latching recesses (90, 94) are provided which are arranged in succession in the circumferential direction (78, 80), wherein preferably at least one first latching projection (88) with at least one first latching recess (90) in a first radial plane (102) and at least one second latching projection (92) with at least one second latching recess (94) in one of the first radial plane (102) axially spaced second radial plane (104) cooperates, which are particularly preferably formed on opposite sides of the first or second component (24, 26).

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