Torque transmission unit, hybrid module and drive arrangement for a motor vehicle

Abstract

The invention relates to a torque transmission unit (1), comprising a housing (10) and at least one torque transmission device (20) arranged in a housing chamber (17) surrounded by the housing (10) for transmitting a torque from at least one input side (21, 22) of the torque transmission unit (1) to an output side (23) of the torque transmission unit (1), characterized in that a receiving chamber for receiving fluid for lubricating and / or cooling a unit (80, 81, 82) of the torque transmission unit (1) to be lubricated and / or cooled is located in the housing chamber (17), which fluid can be carried along by entrainment in a rotational movement of at least one rotatable component of the torque transmission device (20) and centrifugal force acting on the fluid as a result can be distributed at least in regions in the housing chamber (17), wherein the torque transmission unit (1) has, in the flow path (71) of the fluid moving under the action of centrifugal force, at least one shaped element (64) which forms a deflector surface (66) and is arranged in such a way that at least some of the fluid which is carried along and distributed by the rotatable component as a result of centrifugal force can be deflected by the deflector surface (66) and can be conducted to at least one unit of the torque transmission unit which is to be lubricated and / or cooled. The invention further relates to a hybrid module and a drive arrangement for a motor vehicle.

Description

[0001] Torque transmission unit, hybrid module and drive arrangement for a motor vehicle

[0002] The present invention relates to a torque transmission unit, a hybrid module and a drive arrangement for a motor vehicle.

[0003] In modern vehicles, torque transmission units play a central role, as they must transfer power to the drivetrain effectively and with minimal loss. Precise and efficient designs for torque transmission units are essential to ensure high efficiency and reliable vehicle operation. This often places specific demands on the lubrication and cooling of the torque transmission unit's components. Therefore, it is crucial to ensure the proper operation of the torque transmission unit through the targeted distribution of coolant and / or lubricant to increase the service life and operational reliability of the entire assembly.Especially in complex, hybrid drive systems that include both combustion engines and electric rotary machines, optimized design features are required to ensure sufficient lubrication and cooling and thus the smooth and reliable operation of motor vehicles.

[0004] In the current state of the art, there are numerous torque transmission units specifically tailored to the challenges of powertrains, employing various cooling and lubrication approaches. Typically, the components of a torque transmission unit are housed within a casing. The unit is often integrated into an oil circuit, with oil supplied externally to the casing for cooling and / or lubrication of its components. These systems generally require oil pumps and complex piping systems, making the design complex, expensive, and space-consuming. It is also known that torque transmission unit casings are reinforced with external structures, such as ribs, to enhance their structural integrity. However, these often increase the required installation space and restrict design freedom.

[0005] Based on this, the invention aims to provide a torque transmission unit, a hybrid module and a drive arrangement for a motor vehicle, which enables cooling and / or lubrication of components of the torque transmission unit in a simple, space-saving and energy-efficient manner.

[0006] This problem is solved by the torque transmission unit according to claim 1, the hybrid module according to claim 9, and the drive arrangement for a motor vehicle according to claim 10. Advantageous embodiments of the

[0007] The torque transmission unit is specified in dependent claims 2 to 8.

[0008] The features of the claims can be combined in any technically meaningful way, taking into account the explanations from the following description as well as features from the figures, which include supplementary embodiments of the invention.

[0009] Within the scope of the present invention, the terms “radial”, “axial” and “circumferential direction” always refer to an axis of a rotating element of the torque transmission unit.

[0010] The invention relates to a torque transmission unit comprising a housing and at least one torque transmission device arranged in a housing space surrounded by the housing for transmitting torque from at least one input side of the torque transmission unit to an output side of the torque transmission unit. The torque transmission unit is characterized in that a receiving space for receiving fluid for lubrication and / or cooling of a unit of the torque transmission unit to be lubricated and / or cooled is located in the housing space surrounded by the housing, wherein the fluid can be distributed at least partially in the housing space by being carried along in a rotary motion by at least one rotatable component of the torque transmission device and the centrifugal force thereby acting on the fluid.Furthermore, the torque transmission unit in the flow path of the fluid moving under centrifugal force has at least one shaped element forming an impact surface, which is arranged in such a way that at least a part of the fluid carried along and distributed by the rotatable component due to centrifugal force can be deflected by the impact surface and directed onto at least one unit of the torque transmission unit to be lubricated and / or cooled.

[0011] The receiving space for fluid can correspond to a component of the housing space.

[0012] Within the scope of the invention, it is not excluded that fluid is present in the housing space, which, for example, can form a fluid sump with a defined fluid volume at the lowest point of the housing space. At least one rotatable component of the torque transmission device can move through the fluid sump and, due to adhesion, carry fluid with it. Furthermore, the rotatable component can swirl the fluid within the housing space.

[0013] The rotatable component could, for example, be a gear in a gear transmission.

[0014] The fluid can be, for example, an oil. This oil can be, or be described as, a so-called spray oil.

[0015] The flow path is an ideal path along which the fluid moves due to centrifugal force, whereby this path can correspond to a trajectory of the fluid thrown off the rotatable component due to centrifugal force.

[0016] Under the influence of centrifugal force, the fluid also moves, depending on the rotational speed and mass of a fluid droplet, with a component along an ideal tangent to the rotating component due to inertia. Thus, the direction of the moving fluid, or its flow path, exhibits components of both centrifugal and inertial forces. The baffle block the fluid's trajectory, causing it to drip or flow off the baffle and reach at least one component of the torque transmission unit that requires lubrication and / or cooling. From there, it can be returned to the fluid sump by gravity. A molded element with the baffle can be designed as an integral part of the housing or a housing half, or as a separate component, which is attached to the housing, for example, by at least one screw connection.

[0017] The torque transmission unit can therefore forgo active oil lubrication with an oil pump, reservoir, and, if applicable, a cooler, meaning that the torque transmission unit does not require external fluid cooling. The housing can be sealed fluid-tight to the outside. In addition to its function as an impact surface, a shaped element can also serve to increase the torsional moment of inertia, thus enabling the torque transmission unit to better absorb torques applied by connected components, such as an internal combustion engine and / or an electric rotary motor. For example, the shaped element could be a rib projecting inwards into the housing. By strategically placing shaped elements within the housing, external reinforcement elements can potentially be eliminated, thereby saving installation space.

[0018] The torque transmission unit can have a coupling in the housing space which can be cooled, at least in some areas, by the fluid moving under centrifugal force.

[0019] The coupling or individual components of the coupling can be cooled and / or lubricated by the fluid distributed in the housing space.

[0020] The coupling can be a disconnect coupling, which can be actuated, for example, by a ramp release mechanism.

[0021] In an advantageous embodiment, a coupling designed as a disconnect coupling is configured to decouple torque transmission from a second input side to the output side of the torque transmission unit. The torque transmission unit may include a gearbox within its housing, which is at least partially lubricated and / or cooled by the fluid moving under centrifugal force.

[0022] The gearbox, or individual components thereof, can be cooled and / or lubricated by the fluid distributed in the housing space.

[0023] The transmission can be, for example, a gear transmission.

[0024] In one embodiment, the mold element with the impact surface is located above a unit of the torque transmission unit that is to be lubricated and / or cooled, so that fluid dripping or flowing from the impact surface reaches the unit of the torque transmission unit that is to be lubricated and / or cooled due to gravity.

[0025] For example, the shaped element with the impact surface can be located vertically above a bearing point of an axle or shaft for receiving a gear wheel, the vertical arrangement relating to an orientation of the torque transmission unit in its intended operating state. This allows fluid to be supplied to a component of the torque transmission unit requiring lubrication and / or cooling, such as a bearing for the rotary support of a shaft, in a simple manner and without additional energy or component requirements.

[0026] It is possible that a channel is connected to the impact surface to direct the fluid to a unit of the torque transmission unit that needs to be lubricated and / or cooled.

[0027] The channel can be shaped like a trough or comprise a trough-shaped channel section, so that it is open on one of its long sides. The fluid can adhere to the inside of the trough due to adhesion.

[0028] The fluid flows in the channel to the unit to be lubricated and / or cooled. Alternatively or additionally, the channel can have a bore-shaped section for supplying fluid to a unit of the torque transmission unit that requires lubrication and / or cooling.

[0029] If necessary, the bore-shaped channel section can connect to the trough-shaped channel section.

[0030] Furthermore, the channel can branch at least once. For example, the bore-shaped channel section can branch off from the trough-shaped channel section. The two sections can, for example, each lead to different units of the torque transmission unit requiring lubrication and / or cooling, and / or to different sides of the same unit requiring lubrication and / or cooling.

[0031] In one embodiment, the fluid can be supplied to a rotary bearing, for example, through a bearing seat, by means of a bore-shaped channel section. A respective channel, or at least one of its channel sections, can be integrated into the housing or into a housing wall.

[0032] The channel can run radially or parallel to the axis of rotation of the unit to be lubricated and / or cooled to it.

[0033] These designs allow the targeted supply of fluid to a unit of the torque transmission unit that needs lubrication and / or cooling, whereby a radially or axially parallel channel can be designed as a trough, as a bore or also section by section as a trough-shaped channel section and bore-shaped channel section.

[0034] Furthermore, it is possible that a swirling element is arranged in the housing space, with which fluid distributed under centrifugal force can be swirled, so that fluid can be distributed as swirled fluid in the housing space in a direction of movement deviating from the direction of movement under centrifugal force, and wherein a further shaped element forming a further impact surface is arranged in the housing space in such a way that at least a part of the swirled fluid can be deflected by the further impact surface and can be directed onto at least one unit of the torque transmission unit to be lubricated and / or cooled.

[0035] Here, too, another channel can be connected to the additional impact surface. The vortex element and the resulting turbulence movements of the fluid, which deviate from the effects of centrifugal and inertial forces, ensure that the fluid is transported to locations within the housing that would be inaccessible or only insufficiently accessible to the fluid under the effects of centrifugal and inertial forces alone.

[0036] The unit to be lubricated and / or cooled can be an output bearing of the torque transmission unit, a radial shaft seal of a torsional vibration damper, or a pinion bearing of a gear element. The output bearing is a rotary bearing for supporting an output unit located on the output side of the torque transmission unit. The radial shaft seal can, for example, provide a fluid-tight seal between the housing and the outside, and is located, for instance, on the output unit or on a damper hub.

[0037] The invention is not limited to the enumeration of the unit to be lubricated and / or cooled, but also includes other or multiple units within the housing space that are wetted or exposed to the fluid by the distributed fluid. For example, at least one further radial shaft seal can represent another unit to be lubricated and / or cooled.

[0038] Another aspect of the invention is a hybrid module comprising a described torque transmission unit and an electric rotary machine, the shaft of which is connected in a rotationally fixed manner to a first input side of the torque transmission unit.

[0039] The first input side is used to transmit torque to the torque transmission unit. The hybrid module enables hybrid operation of an equipped vehicle if this vehicle has an additional drive motor, such as an internal combustion engine, connected to the hybrid module. For this purpose, the output element of the internal combustion engine can, for example, be connected to a second input side of the torque transmission unit in a rotationally fixed manner.

[0040] Accordingly, a vehicle equipped with the hybrid module can be driven either by a connected combustion engine or by an electric motor, for example, connected via a gearbox and arranged parallel to the axle.

[0041] Another aspect of the invention is a drive arrangement for a motor vehicle, comprising a described hybrid module and a drive machine with an output element, wherein the output element is connected in a rotationally fixed manner to a second input side of the torque transmission unit.

[0042] The invention described above is explained in detail below against the relevant technical background with reference to the accompanying drawings, which show preferred embodiments. The invention is in no way limited by the purely schematic drawings, and it should be noted that the embodiments shown in the drawings are not limited to the dimensions depicted. It is illustrated in

[0043] Fig. 1: a perspective view of a torque transmission unit;

[0044] Fig. 2: a first sectional view of the torque transmission unit along the section path AA from Figure 1;

[0045] Fig. 3: a section of a second sectional view of the torque transmission unit along the section path BB from Figure 1; Fig. 4: a section of a perspective view of the second housing side of the torque transmission unit from Figure 1;

[0046] Fig. 5: an axial view into the second housing side of the torque transmission unit of Figure 1 with the fluid flow path shown;

[0047] Fig. 6: a section of a perspective view into the second housing side of the torque transmission unit of Figure 1 with the fluid flow path shown;

[0048] Fig. 7: a section of Figure 3 with the fluid flow path shown; and Fig. 8: an axial view into the first housing side of the torque transmission unit of Figure 1 with the fluid flow path shown.

[0049] Figure 1 shows a perspective view of a torque transmission unit 1 in its entirety. The torque transmission unit 1 comprises a housing 10, which includes a first housing side 11 and a second housing side 12. The torque transmission unit 1 has a shaft connection 13 for connecting a shaft of an electric rotary machine (not shown) and an output element connection 14 for connecting an output element of a drive machine (also not shown), for example, an internal combustion engine. The shaft connection 13 forms a first input side 21 and the output element connection 14 a second input side 22 of the torque transmission unit 1.Furthermore, the first housing side 11 includes mechanical connecting elements for an electric rotary machine 15 as well as mechanical connecting elements for a drive machine 16, with which a respective drive machine and electric rotary machine can be fixed to the torque transmission unit 1. On the second housing side 12, a coupling actuator drive unit 51 is arranged, via which an actuator drive located in the housing space 17 and therefore not visible here can be controlled. The coupling actuator drive unit 51 can include an electric motor drive.

[0050] Figure 2 shows the complete torque transmission unit 1 from Figure 1 in a first sectional view along the section path AA indicated in Figure 1. It can be seen that the first input side 21, formed by the shaft connection 13, and the second input side, formed by the output element connection 14, are arranged on the first housing side 11 of the housing 10, whereas an output side 23 of the torque transmission unit 1 is formed on the second housing side 12. A torque transmission device 20 is arranged in a housing space 17 formed between the housing sides 11 and 12, which includes, among other things, a coupling 50 designed as a disconnect coupling. The coupling 50 enables a torque-transmitting coupling of the output side 23 with the second input side 22.While the second input side 22 can be coupled to the output side 23 via the coupling 50 without any reduction gearing, the first output side 21 is connected to the output side via a gear transmission comprising a large gear 27 and a small gear 28. The small gear 28 is rotatably mounted by the first pinion bearing 43 and the second pinion bearing 44. The torque transmission unit 1 has a main axis 100, which corresponds to the axis of rotation of the second input axis 22 and the axis of rotation of the output side 23, and about which the large gear 27 is rotatable.

[0051] Furthermore, there is a secondary axis 101, which corresponds to the axis of rotation of the first input side 21, and about which the small gear 28 can rotate. The main axis 100 and the secondary axis 101 are aligned parallel to each other. Figure 3 shows a section of a second sectional view of the torque transmission unit along the section path BB indicated in Figure 1. In Figure 3, the torque transmission device 20 shown in Figure 2 is shown in detail, whereby the small gear 28 is not located in the section plane and is therefore not visible. It can be seen that torque transmission from the second input side 22 via a damper hub 25 and a torsional vibration damper 24 via the coupling 50 to the large gear 27 and thus to an output unit 26 formed by the large gear 27 on the output side is possible.The clutch 50 is actuated by means of a ramp release bearing 53, which reduces the spring force acting on the clutch 50 via the clutch spring 52. The torque transmission device 20 comprises an output unit bearing 42 designed as a double-row ball bearing, as well as a release bearing 40 and a ramp bearing 41, each designed as a ball bearing, the ball of which is arranged between the ramps of the ramp release bearing 53. In the illustrated section, the torque transmission unit has three radial shaft seals 30, 31, 32 for fluid-tight sealing to the outside of the housing 10. The first radial shaft seal 30 is arranged between the damper hub 25 and a sealing plate 33 arranged on the first housing side 11, and the second radial shaft seal 31 is arranged between the damper hub 25 and the output unit 26.On the second housing side 12, the third radial shaft seal 32 is located between the output unit 26 and the second housing side 12 of the housing 10. The right housing side 12 forms a shaped element 64 and a channel 60. The shaped element 64 essentially has the form of an axially oriented rib 65 and serves to guide fluid distributed by centrifugal force from the large gear 27 into the channel 60. The channel 60 has a trough-shaped channel section 61, a channel section formed by a gap 63 between the second housing side 12 and the ramp release 53, and a bore-shaped channel section 62. The channel 60 is configured for the gravity-driven flow of fluid in the direction of the main axis 100 towards the units of the torque transmission device 20 that require lubrication and / or cooling.A gear unit, which is not shown here and is not encompassed by the torque transmission unit 1 and which can be connected or linked to the output unit 26 in a rotationally fixed manner, can be connected to the torque transmission unit 1 shown.

[0052] Figure 4 shows a section of a perspective view of the second housing side 12 of the housing 10 of the torque transmission unit from Figures 1, 2, and 3. This view particularly shows the shaped element 64 formed by the second housing element 12 and the channel 60 also formed by the second housing element 12. The shaped element 64 comprises a rib 65 arranged vertically above the main axis, which forms a baffle surface 66 laterally. The rib 65 partially splits the channel 60. The channel 60 comprises a trough-shaped section 61 that extends towards the main axis and tapers as it does so. The channel 60 runs essentially vertically downwards and then parallel to the axis. At one end, a bore-shaped channel section 63 branches off from the trough-shaped channel section 61.Fluid striking the impact surface 66 drips or flows away from the molded element 64 or its impact surface 66 due to gravity and thus easily reaches the main axis or a unit to be lubricated and / or cooled, such as a rotary bearing, located on or near the main axis, in order to cool or lubricate it.

[0053] Figure 5 shows an axial view into the second housing side 12 of the housing 10 of the torque transmission unit from Figures 1, 2, 3, and 4. A fluid is present in the housing chamber 17, which, due to gravity, forms a fluid sump 70 in the lowest region of the housing chamber 17. In the depicted state, the large gear 27 is partially immersed in the fluid sump 70, so that when the large gear 27 rotates, some of the fluid is carried along by the large gear 27. Due to the centrifugal force acting on the fluid when the large gear 27 rotates, the fluid is thus distributed within the housing chamber 17. The distribution of the fluid is indicated here by the flow path 71. The fluid can also pass onto the small gear 28 and from there be partially transported towards the clutch actuator drive unit 51.Furthermore, part of the fluid can be brought from the large gear 27 to the shaped element 64 designed as a rib 65, whereby the fluid is partially introduced from the impact surface 66 into the channel 60 described in Figure 4.

[0054] Figure 6 shows a section of a perspective view into the second housing side 12 of the torque transmission unit from Figures 1, 2, 3, 4, and 5, illustrating how the fluid is transported along the flow path 71. The flow path shown is merely one possible trajectory of the fluid. A portion of the fluid is flung against the impact surface 66 of the rib-shaped element 65. The fluid is diverted insofar as a portion of it rebounds and / or drips off the rib 65 and, due to gravity, is directed into the channel-shaped section 61 of the channel 60 behind the large gear 27.

[0055] Figure 7 shows a section of Figure 3 with the fluid flow path 71 indicated. This is a section of the second sectional view of the torque transmission unit along the section BB indicated in Figure 1. The fluid drips and / or rebounds from the rib-shaped element 64, or its impact surface (not visible here), and flows and / or drips into the channel 60 due to gravity. The fluid is then guided through the initially trough-shaped channel section 61 essentially perpendicularly towards the main axis 100. At one end, the channel 60 branches, with one part of the fluid following the trough-shaped channel section 61 axially towards the main axis 100, and another part of the fluid being directed into a bore-shaped channel section 62.The portion of the fluid that is guided through the bore-shaped channel section 62 reaches the third radial shaft seal 32, the first unit 80 to be lubricated and / or cooled, by gravity, and from there continues to the right side of the output unit bearing 42, the second unit 81 to be lubricated and / or cooled. The other portion of the fluid is guided through the channel-shaped section 62 to the left side of the output unit bearing 42. This ensures targeted cooling and / or lubrication of the first and second units 80 and 81 to be lubricated and / or cooled. If necessary, at least one flow path exists, which is not visible in the sectional view shown here, and the fluid then returns to the fluid sump by gravity.

[0056] Figure 8 shows an axial view into the first housing side 11 of the housing 10 of the torque transmission unit from Figures 1, 2, 3, 4, 5, 6, and 7, with the fluid flow path 71 indicated. Analogous to the first housing side, the second housing side 11 includes a rib-shaped element 64. Due to centrifugal force, the fluid is flung by the large gear (not shown) against the impact surface 66 of the rib-shaped element 64 shown and directed into a channel 60. However, the channel 60 is formed only partially by the first housing element 11 and predominantly by a tapered, channel-shaped section 61 in the sealing plate 33. The fluid thus easily reaches the first radial shaft seal 82, the third unit 82 to be lubricated and / or cooled, by gravity.Furthermore, Figure 8 shows how the fluid, due to centrifugal force, is forced from the large and / or small gear (not shown) against a swirling element 94, whereby the fluid is swirled in such a way that at least part of the fluid is directed onto a further shaped element 90, here designed as a reinforcing rib 91. The fluid is thereby guided in a direction of movement deviating from the direction of motion under the influence of centrifugal force onto a further impact surface 92 of the reinforcing rib 91 and rebounds and / or drips from the impact surface 92 or the reinforcing rib 91 into a further channel 93. The channel 93 leads the fluid to a fourth unit (not shown) to be lubricated and / or cooled, for example, to another radial shaft seal.

[0057] List of reference signs

[0058] I Torque transmission unit

[0059] 10 cases

[0060] II First side of case

[0061] 12 Second side of the case

[0062] 13 Shaft connection

[0063] 14 Output element connection

[0064] 15 Mechanical connecting element for an electric rotary machine

[0065] 16 Mechanical connecting element for a drive machine

[0066] 17 Housing space

[0067] 20 Torque transmission device

[0068] 21 First Entrance Page

[0069] 22 Second entrance page

[0070] 23 Home page

[0071] 24 torsional vibration dampers

[0072] 25 shock absorber hub

[0073] 26 Output unit

[0074] 27 Large gear

[0075] 28 Small gear

[0076] 30 First radial shaft seal

[0077] 31 Second radial shaft seal

[0078] 32 Third radial shaft seal

[0079] 33 Sealing plate

[0080] 40 Release bearings

[0081] 41 ramp bearings

[0082] 42 output unit bearings

[0083] 43 First sprocket bearing

[0084] 44 Second pinion bearing

[0085] 50 Clutch

[0086] 51 Clutch actuator drive unit

[0087] 52 Clutch spring

[0088] 53 ramp release vehicles

[0089] 60 Channel 61 Channel-shaped channel section

[0090] 62 Bore-shaped channel section

[0091] 63 gap

[0092] 64 Shape element 65 Rib

[0093] 66 Impact area

[0094] 70 Fluid sump

[0095] 71 Flow path

[0096] 80 First unit to be lubricated and / or cooled 81 Second unit to be lubricated and / or cooled

[0097] 82 Third unit to be lubricated and / or cooled

[0098] 90 Further design element

[0099] 91 Reinforcing rib

[0100] 92 Additional impact area 93 Additional channel

[0101] 94 swirl element

[0102] 100 Main axis

[0103] 101 Secondary axle

Claims

Patent claims 1. Torque transmission unit (1) comprising a housing (10) and at least one torque transmission device (20) arranged in a housing space (17) surrounded by the housing (10) for transmitting a torque from at least one input side (21, 22) of the torque transmission unit (1) to an output side (23) of the torque transmission unit (1), characterized in that a receiving space for receiving fluid for lubrication and / or cooling of a unit (80, 81, 82) of the torque transmission unit (1) to be lubricated and / or cooled is located in the housing space (17), which can be distributed at least partially in the housing space (17) by being carried along in a rotary movement by at least one rotatable component of the torque transmission device (20) and thereby by centrifugal force acting on the fluid,wherein the torque transmission unit (1 ) in the flow path (71 ) of the fluid moving under centrifugal force has at least one shaped element (64) forming an impact surface (66) which is arranged such that at least a part of the fluid carried along and distributed by the rotatable component due to centrifugal force can be deflected by the impact surface (66) and can be directed onto at least one unit of the torque transmission unit to be lubricated and / or cooled.

2. Torque transmission unit (1 ) according to claim 1 , characterized in that the torque transmission unit (1 ) has a coupling (50) in the housing space (17) which can be cooled at least partially by the fluid moving under centrifugal force.

3. Torque transmission unit (1) according to one of the preceding claims, wherein the torque transmission unit (1) has a gearbox in the housing space which is at least partially lubricated and / or cooled by the fluid moving under centrifugal force.

4. Torque transmission unit (1 ) according to one of the preceding claims, wherein the shaped element (64) with the impact surface is located above a unit (80, 81, 82) of the torque transmission unit (1 ) to be lubricated and / or cooled, such that fluid dripping or flowing from the impact surface (66) reaches the unit (80, 81, 82) of the torque transmission unit (1) to be lubricated and / or cooled due to gravity.

5. Torque transmission unit (1) according to one of the preceding claims, wherein a channel (60) is connected to the impact surface (66) for directing the fluid to a unit (80, 81, 82) of the torque transmission unit (1) to be lubricated and / or cooled.

6. Torque transmission unit (1) according to claim 5, wherein the channel (60) extends radially or axially parallel to an axis of rotation of the unit (80, 81, 82) associated with it to be lubricated and / or cooled.

7. Torque transmission unit (1) according to one of the preceding claims, wherein a swirling element (94) is arranged in the housing space (17), with which fluid distributed under centrifugal force can be swirled, so that fluid can be distributed as swirled fluid in the housing space (17) in a direction of movement deviating from the direction of movement under centrifugal force, and wherein a further forming element (90) forming a further impact surface (92) is arranged in the housing space (17) such that at least a part of the swirled fluid can be deflected by the further impact surface (92) and can be directed onto at least one unit of the torque transmission unit (80, 81, 82) to be lubricated and / or cooled.

8. Torque transmission unit (1) according to one of the preceding claims, characterized in that the unit to be lubricated and / or cooled: - an output unit bearing (42) of the torque transmission unit (1), or - a radial shaft seal (30, 31, 32) of a torsional vibration damper, or - a pinion bearing (43,44) of a gear element. - 18 - 9. Hybrid module comprising a torque transmission unit (1 ) according to any one of claims 1 to 8 and an electric rotary machine, the shaft of which is connected to a first input side (21 ) of the torque transmission unit.

10. Drive arrangement for a motor vehicle, comprising a hybrid module according to claim 9 and a drive machine with an output element, wherein the output element is rotatably connected to a second input side (22) of the torque transmission unit (1 ).

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