torque converter

Abstract

The present disclosure relates to a hydraulic torque converter, which includes: a housing for receiving input torque; a pump wheel, which is integrated with the housing and can rotate around a rotation axis; a turbine, which can rotate around the rotation axis, the turbine is arranged axially opposite to the pump wheel and can be hydraulically driven by the pump wheel, and the turbine includes a turbine housing and a plurality of turbine blades; a vibration damper, which includes a driving plate, a driven plate and a plurality of elastic members between the driving plate and the driven plate; an output hub, which can rotate around the rotation axis and is connected to the turbine housing and the driven plate of the vibration damper for outputting torque; the turbine housing and the driven plate are mounted to the output hub by rivets, wherein the output hub includes a first centering surface for the driven plate, the first centering surface is an axially extending surface, and the driven plate includes a second centering surface that cooperates with the first centering surface.

Description

Technical Field

[0001] The present disclosure relates to a torque converter, and more particularly to a torque converter having a centering device for a vibration damper and an output hub. Background Art

[0002] Typically, a torque converter is provided between the engine and the transmission of an automatic transmission motor vehicle. The torque converter is used to transmit the driving power of the engine to the transmission by using a fluid (usually oil), thereby transmitting torque and converting torque.

[0003] A torque converter typically consists of a housing, an impeller, a turbine, a lock-up clutch, a vibration damper, and an output hub.

[0004] The impeller and turbine are axially opposed. The impeller includes an impeller housing and a plurality of impeller blades fixed to the impeller housing, which rotates together with the outer casing. The turbine includes a turbine housing fixedly connected to the output hub and a plurality of turbine blades fixed to the side of the turbine housing facing the impeller.

[0005] The shock absorber includes a driving plate connected to the lock-up clutch, a driven plate fixedly connected to the output hub, and a circumferentially acting elastic member interposed between the driving plate and the driven plate.

[0006] The turbine housing, driven plate, and output hub are fixed together using rivets. Production practice has shown that this riveting process can lead to eccentricity. This means that radial offset often occurs between the turbine housing, driven plate, and output hub, particularly between the driven plate and the output hub. Torque converters incorporating centrifugal pendulums place even higher demands on dynamic balancing. This can lead to significant imbalance during rotation, placing unnecessary dynamic loads on the torque converter, particularly the output hub, and impairing proper operation. Summary of the Invention

[0007] The present disclosure aims to at least solve the above-mentioned problems in the prior art, so as to eliminate the radial displacement between the driven disc and the output hub and improve the dynamic balance of the torque converter.

[0008] The present disclosure provides a hydraulic torque converter, comprising: a housing for receiving an input torque; an impeller integral with the housing and rotatable about a rotation axis; a turbine rotatable about the rotation axis, the turbine being axially arranged opposite the impeller and hydraulically driven by the impeller, the turbine comprising a turbine housing and a plurality of turbine blades; a lockup clutch comprising an axially displaceable piston plate; a vibration damper comprising a driving plate, a driven plate, and a plurality of elastic members interposed between the driving plate and the driven plate, the driving plate being connected to the piston plate of the locking clutch; an output hub rotatable about the rotation axis and connected to the turbine housing and the driven plate of the vibration damper for outputting torque; the turbine housing and the driven plate being coaxially arranged about the rotation axis and mounted to the output hub by rivets, wherein the output hub comprises a first centering surface for the driven plate, the first centering surface being an axially extending surface, and the driven plate comprising a second centering surface cooperating with the first centering surface.

[0009] The above-described centering structure of the driven disc and the output hub allows for very simple manufacture and operation.

[0010] During the riveting preparation process, the first and second centering surfaces work together to ensure the driven plate is centered relative to the output hub. Furthermore, during the riveting process, the first and second centering surfaces work together to suppress radial play of the driven plate relative to the output hub, thereby improving the centering and dynamic balance of the torque converter.

[0011] In some embodiments, the output hub includes an axial extension and a radial extension, the first centering surface being formed in the axial extension.

[0012] In some embodiments, the output hub includes an axial extension and a radial extension, the first centering surface being formed in the radial extension.

[0013] In some embodiments, the driven disc is formed as an annular main body ring segment comprising a central hole, the central hole comprising an axially extending cylindrical inner surface, the second centering surface being formed by the cylindrical inner surface of the central hole.

[0014] In some embodiments, the driven plate includes an annular main body ring segment and a plurality of lugs protruding radially inward from the annular main body ring segment, each lug includes a cylindrical inner surface, and the second centering surface is formed by the cylindrical inner surfaces of the plurality of lugs.

[0015] In some embodiments, the plurality of lugs are equally spaced apart in a circumferential direction around the rotation axis.

[0016] In some embodiments, the number of the lugs is 3.

[0017] In some embodiments, the vibration absorber further comprises a pendulum vibration absorber comprising a support plate and a plurality of pendulum masses arranged in the support plate, wherein the support plate is connected to the driven plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are incorporated into and constitute a part of the specification. Together with the general description above and the detailed description of exemplary embodiments and methods given below, the accompanying drawings serve to explain the principles of the present disclosure. Objects and advantages of the present disclosure will become apparent upon studying the following description in light of the accompanying drawings, in which like elements are given like or similar reference numerals, and in which:

[0019] Figure 1 is a schematic diagram of a torque converter according to a first exemplary embodiment of the present disclosure;

[0020] Figure 2 is an exploded view of a torque converter according to a first exemplary embodiment of the present disclosure;

[0021] Figure 3 Detailed illustration of the connection between the turbine housing, the driven plate, and the output hub of the torque converter according to the first exemplary embodiment of the present disclosure;

[0022] Figure 4 Detailed illustration of a connection portion between a turbine housing, a driven plate, and an output hub of a torque converter according to a second exemplary embodiment of the present disclosure;

[0023] Figure 5 A mounting flange of a driven plate of a torque converter according to a third exemplary embodiment of the present disclosure is shown in detail. DETAILED DESCRIPTION

[0024] Reference will now be made in detail to exemplary embodiments and methods of the present disclosure as illustrated in the accompanying drawings, in which like reference numerals designate like or corresponding parts. It should be noted, however, that the disclosure in its broader aspects is not limited to the specific details, representative apparatus and methods, and illustrative examples shown and described in connection with the exemplary embodiments and methods.

[0025] This description of the exemplary embodiments is intended to be read in conjunction with the accompanying drawings, which are considered part of the entire written specification. In the specification, relative terms such as "upper", "lower", "right", "left" and their derivatives (for example, "downwardly", "upwardly", etc.) should be interpreted as the orientation described or shown in the drawings in question. These relative terms are for convenience of description and are not intended to require a specific orientation. Unless otherwise expressly described, the terms "connected, coupled" and the like refer to a relationship in which structures are fixed or attached to each other directly or indirectly through an intermediate structure, as well as a removable or secure attachment or relationship. The term "operably connected" is a connection relationship that allows the relevant structures to have this connection relationship during operation or actual use. In addition, the words "one" and "an" used in the claims mean "at least one", and the word "two" used in the claims means "at least two".

[0026] A first exemplary embodiment of the torque converter 1 is Figure 1 and Figure 2 A torque converter 1 receives input torque from an engine and transfers the torque to an input shaft (not shown) of a transmission, such as in a motor vehicle.

[0027] It should be understood that axial and radial orientations are considered relative to the axis of rotation X of the torque converter 1. Relative terms such as "axially," "radially," and "circumferentially" relate to orientations parallel to, perpendicular to, and circularly around the axis of rotation X, respectively. The figures discussed herein only show half of the torque converter 1, i.e., a partial or fragmentary cross-section of the torque converter 1 above the axis of rotation X. As is known in the art, the torque converter 1 is symmetrical about the axis of rotation X.

[0028] The torque converter 1 includes a housing 2 as an input member, which is filled with fluid and rotatable about a rotation axis X. The housing 2 receives torque from the engine as input torque to the torque converter 1. The housing 2 rotates at the same speed as the output shaft of the engine.

[0029] The torque converter 1 also includes an output hub 7 as an output member, which is rotatable about an axis of rotation X. The output hub 7 is coupled to and coaxially disposed with the input shaft of the transmission. For example, the output hub 7 may be provided with internal splines for non-rotatably coupling the output hub 7 to the input shaft of the transmission, which is provided with complementary external splines. Alternatively, welding or other connections may be used to secure the output hub 7 to the input shaft of the transmission.

[0030] like Figure 1 The illustrated torque converter 1 includes a pump impeller 3 rotatable about an axis of rotation X, a turbine runner 4 rotatable about the axis of rotation X and coaxially aligned with the pump impeller 3 , and a stator arranged between the pump impeller 3 and the turbine runner 4 .

[0031] The impeller 3 includes an impeller housing 31 and a plurality of impeller blades fixed to the impeller housing 31. The impeller housing 31 is axially opposed to the housing 2 and is integral therewith. For example, the impeller housing 31 is formed by Figure 1 The weld shown in FIG is fixed to the housing 2 .

[0032] The turbine 4 is arranged axially opposite the impeller 3 and can be driven by its hydraulic force. The turbine 4 includes a turbine housing 41 and a plurality of turbine blades 42. The turbine housing 41 is fixedly connected to the output hub 7 via rivets 11. The turbine blades 42 are fixed to the side of the turbine housing 41 facing the impeller 3. The impeller 3, turbine 4, and stator together form a circulation circle. The impeller 3 and turbine 4 can transmit power via fluid without a rigid connection, as is known in the art.

[0033] The torque converter 1 further comprises a lock-up clutch 5, which is arranged to mechanically transmit torque when in an engaged (locked) position. The lock-up clutch 5 is usually locked after a hydraulically driven start-up process of a motor vehicle in order to avoid efficiency losses caused, for example, by slippage between the turbine 4 and the pump impeller 3.

[0034] The lock-up clutch 5 comprises a generally annular piston disc 51 including an annular friction plate 52 which is securely attached to an engaging surface of the piston disc 51 facing the locking wall 21 of the housing 2 by suitable means known in the art, such as adhesive bonding. Figure 1 As best shown, the friction plate 52 is securely attached to the engaging surface of the piston disc 51 at its radially outer peripheral end. The piston disc 51 is axially displaceable to move toward the locking wall 21 of the housing 2 (corresponding to an engaged position of the lock-up clutch 5) or away from the locking wall 21 of the housing 2 (a disengaged position of the lock-up clutch 5).

[0035] The shock absorber 6 is arranged between the output hub 7 and the piston plate 51 of the lock-up clutch 5. Figure 2 As best shown, the shock absorber 6 includes a driving plate 61, a driven plate 62, and a plurality of elastic members 63 interposed between the driving plate 61 and the driven plate 62. The driving plate 61 constitutes an input member of the shock absorber 6, while the driven plate 62 constitutes an output member of the shock absorber 6. The driving plate 61 and the driven plate 62 are both generally annular, coaxial with each other, and rotatable about the rotation axis X.

[0036] like Figure 2As shown, the driving plate 61 includes an annular body 61b, which is fixed to the piston plate 51 of the lock-up clutch 5 by a suitable means such as rivets 12 or welding. The driving plate 61 also includes a plurality of claws 61c extending axially from the outer periphery of the annular body 61b toward the driven plate 62. The plurality of claws 61c are equidistantly spaced apart in the circumferential direction around the rotation axis X. Figure 2 In the exemplary embodiment shown, the number of the claws 61 c is three. Of course, those skilled in the art can also envision other numbers of claws.

[0037] Continue to refer Figure 2 The driven disc 62 includes an elastic member retaining portion 67 for retaining the plurality of elastic members 63. The elastic member retaining portion 67 includes an abutment portion (not shown) perpendicular to the circumferential direction. The elastic members 63 are circumferentially arranged in series between the driving disc 61 and the driven disc 62. Specifically, the elastic members 63 are compressed between the claws 61c of the driving disc 61 and the abutment portion of the elastic member retaining portion 67 of the driven disc 62, so that the shock absorber absorbs sudden changes in torque. During operation of the shock absorber 6, power input to the driving disc 61 of the shock absorber 6 is transmitted to the output hub 7 via the elastic members 63 and the driven disc 62. Thus, changes in engine rotation can be effectively damped. The driven disc 62 also includes a mounting flange 65 extending radially inward from the elastic member retaining portion 67 for mounting the driven disc 62 to the output hub 7. The mounting flange 65 is annular in shape with a central hole 65o and is fixedly connected to the output hub 7 via rivets 11.

[0038] During vehicle operation, when the lockup clutch 5 is in the engaged position, the torque converter 1 operates in a rigid transmission mode, with torque first transmitted from the engine to the housing 2, then to the damper 6 by means of frictional engagement between the friction plates 52 of the lockup clutch 5 and the locking wall 21 of the housing 2, and then to the output hub 7. In the rigid transmission mode, the torque transmission path is via the lockup clutch 5 and the damper 6 to the output hub 7.

[0039] When the lockup clutch 5 is in the disengaged position, the torque converter 1 operates in a hydraulic transmission mode, where torque is first transmitted from the engine to the housing 2 and the impeller housing 31 integral with the housing 2, and then hydraulically transmitted to the output hub 7 through the impeller 3 and the turbine 4. In the hydraulic transmission mode, the torque is transmitted through the impeller 3 and the turbine 4 to the output hub 7.

[0040] Continue to refer Figure 2In some embodiments, the vibration absorber 6 further comprises a pendulum vibration absorber 8, which is rotatable about the rotation axis X. The pendulum vibration absorber 8 comprises a generally annular support plate 81 and a plurality of pendulum mass blocks 82 mounted to the support plate 81, wherein the pendulum mass blocks 82 are movable relative to the support plate. The support plate 81 is connected to the driven disc 62, for example, by Figure 2 The rivets 13 are shown in FIG. A plurality of pendulum masses 82 are arranged at the radially outer periphery of the support plate 81 to effectively absorb vibrations when the vibration absorber 6 is subjected to the maximum centrifugal force during rotation about the rotation axis X.

[0041] like Figure 1 and Figure 2 As shown, the output hub 7 includes a generally cylindrical axial extension 71 and a radial extension 72 extending radially from one end of the axial extension 71. The axial extension 71 may be provided with an internal spline for non-rotatably coupling the output hub 7 to an input shaft (not shown) of the transmission provided with complementary external splines. Alternatively, welding or other connections may be used to secure the output hub 7 to the input shaft of the transmission.

[0042] The turbine housing 41 and the driven disc 62 are coaxially arranged around the rotation axis X and are mounted to the output hub 7 by means of rivets 11. Figure 2 As shown, the turbine housing 41, the mounting flange 65 of the driven plate 62, and the radial extension 72 of the output hub 7 may each be provided with rivet holes equidistantly spaced apart in the circumferential direction. The rivet holes of the turbine housing 41 are indicated by reference numeral 43, the rivet holes of the driven plate 62 are indicated by reference numeral 66, and the rivet holes of the output hub 7 are indicated by reference numeral 73.

[0043] Figure 3 for Figure 1 , which shows in detail the connection between the turbine housing 41, the driven plate 62 and the output hub 7 of the torque converter according to the first exemplary embodiment of the present disclosure. Figure 3 It can be seen that the rivet holes 43 of the turbine housing 41, the rivet holes 66 of the driven plate 62, and the rivet holes 73 of the output hub 7 are aligned in the axial direction. The deformed end of the riveting is, for example, arranged on one side of the output hub 7. To facilitate filling of the deformed end, a known practice is to set the sizes of the rivet holes 43 of the turbine housing 41, the rivet holes 66 of the driven plate 62, and the rivet holes 73 of the output hub 7 to gradually increase from left to right, which is also called a "trumpet hole." In other words, the size of the rivet hole 43 of the turbine housing 41 is roughly the same as the size of the rivet, the size of the rivet hole 66 of the driven plate 62 is slightly larger than the size of the rivet hole 43 of the turbine housing 41, and the size of the rivet hole 73 of the output hub 7 is slightly larger than the size of the rivet hole 66 of the driven plate 62.

[0044] During the riveting preparation process, the rivet holes 43 of the turbine housing 41, the rivet holes 66 of the driven plate 62, and the rivet holes 73 of the output hub 7 must first be aligned along the axial direction. However, due to the aforementioned dimensions of the rivet holes 43 of the turbine housing 41, the rivet holes 66 of the driven plate 62, and the rivet holes 73 of the output hub 7, radial misalignment may occur between the rivet holes 43 of the turbine housing 41, the rivet holes 66 of the driven plate 62, and the rivet holes 73 of the output hub 7, particularly between the rivet holes 66 of the driven plate 62 and the rivet holes 73 of the output hub 7. Furthermore, during the riveting process, the driven plate 62 may further move radially relative to the output hub 7 due to deformation stress at the deformed end. After riveting, the driven plate 62 may not be perfectly centered, which may cause imbalance in the torque converter 1 during rotation. The presence of dynamic balancing issues subjects the torque converter 1, particularly the output hub 7, to unnecessary dynamic loads, potentially damaging the internal splines of the output hub 7 or the external splines of the transmission input shaft, thus impairing the proper operation of the torque converter 1. Furthermore, the presence of the movable pendulum mass 82 in the pendulum damper 8 exacerbates the dynamic balancing issue caused by the imperfect centering of the driven plate 62.

[0045] The torque converter 1 according to the present disclosure is provided with a centering device of the driven disc 62 and the output hub 7 in order to improve the pre-positioning of the driven disc 62 relative to the output hub 7 during the riveting preparation process.

[0046] Compared with the prior art, on the one hand, a first centering surface S1 is formed in the radially extended portion 72 of the output hub 7. The first centering surface S1 is an axially extended cylindrical outer surface. More specifically, the radially extended portion 72 of the output hub 7 may have an axially thickened portion 74. The first centering surface S1 is formed, for example, by machining the axially thickened portion 74. On the other hand, the driven disc 62 has a mounting flange 65 that widens radially inward. Figure 3 As seen in the cross-sectional view, the mounting flange 65 of the driven disc 62 extends to the first centering surface S1 located in the radial extension 72 of the output hub 7. The central hole 65o of the driven disc 62 includes an axially extending cylindrical inner surface 65i, which forms a second centering surface S2 that cooperates with the first centering surface S1. The outer diameter of the first centering surface S1 and the inner diameter of the second centering surface S2 are substantially the same. Thus, during the riveting preparation process, the centering of the driven disc 62 relative to the output hub 7 can be ensured by the cooperation of the first centering surface S1 and the second centering surface S2. Furthermore, during the riveting process, the cooperation of the first centering surface S1 and the second centering surface S2 can suppress radial movement of the driven disc 62 relative to the output hub 7, thereby improving the centering and dynamic balance of the torque converter 1.

[0047] Figure 4FIG. 4 shows the connection portion of the turbine housing 41, the driven plate 62 and the output hub 7 of the torque converter according to the second exemplary embodiment of the present disclosure. Figure 4 As shown, a first centering surface S1 is formed in the axially extended portion 71 of the output hub 7. The first centering surface S1 is an axially extended cylindrical outer surface. Figure 3 Compared to the first embodiment shown, the driven plate 62 has a mounting flange 65 which is further widened radially inwards. Figure 4 As can be seen from the cross-sectional view, the mounting flange 65 of the driven disc 62 extends to the first centering surface S1 located in the axial extension 71 of the output hub 7. In other words, Figure 4 The center hole 65o of the driven plate 62 has a larger Figure 3 The central hole 65o of the driven plate 62 is smaller in size. The central hole 65o of the driven plate 62 includes an axially extending cylindrical inner surface 65i, which forms a second centering surface S2 that cooperates with the first centering surface S1. The outer diameter of the first centering surface S1 and the inner diameter of the second centering surface S2 are substantially the same.

[0048] exist Figure 4 In the embodiment, the mounting flange 65 of the driven disc 62 may include a first annular portion 65f and a second annular portion 65s coaxially arranged about the rotation axis X. The first annular portion 65f and the second annular portion 65s both extend in the radial direction. The first annular portion 65f is located radially outward from the second annular portion 65s and is axially offset relative to the second annular portion 65s. The first annular portion 65f and the second annular portion 65s are connected by a transition portion 65t that is inclined relative to the radial direction to adapt in shape to the axially thickened portion 74 of the radial extension 72 of the output hub 7.

[0049] In the third embodiment according to the present disclosure, the mounting flange 65 of the driven plate 62 may have a segmented second centering surface S2 . Figure 5 The mounting flange 65 of the driven disc 62 is shown (with the rivet holes not shown) viewed axially. The mounting flange 65 includes an annular segment 65b and a plurality of lugs 64 protruding radially inward from the annular segment 65b. The plurality of lugs 64 are, for example, equally spaced apart in the circumferential direction around the rotation axis X. The number of lugs 64 is 3, although other numbers of lugs 64 are also conceivable. Each lug 64 includes a cylindrical inner surface 64i located radially inward. The inner surfaces 64i of each lug 64 are located on the cylindrical surface of the same cylinder and together form a second centering surface S2 that cooperates with the first centering surface S1. With such a construction, the driven disc 62 can have less material and weight and still ensure the centering of the driven disc 62 relative to the output hub 7.

[0050] Of course, those skilled in the art can also envision that the output hub 7 may have a segmented centering surface. For example, the axially extended portion 71 of the output hub 7 may include a plurality of lugs protruding radially outward. The lugs may be equally spaced circumferentially around the rotation axis X. Each lug includes a cylindrical outer surface located radially outward. The outer surfaces of the lugs are located on the cylindrical surface of the same cylinder and together form a first centering surface S1 that mates with the second centering surface S2.

[0051] Various modifications, changes, and variations can be implemented with the above-described embodiments.

[0052] In accordance with the provisions of the patent statutes, the foregoing description of exemplary embodiments of the present disclosure has been presented for illustrative purposes. This is not intended to be exhaustive or to limit the present disclosure to the exact form disclosed. The embodiments disclosed above are selected to best illustrate the principles of the present disclosure and its practical application, so that one of ordinary skill in the art can utilize the present disclosure in the best manner in various embodiments, and various modifications are suitable for the intended specific use, as long as the principles described herein are followed. Therefore, this application is intended to cover any variation, use or modification of the present disclosure using its general principles. In addition, this application is intended to cover content that deviates from the present disclosure in known or customary practices in the field to which the present disclosure belongs. Therefore, the above disclosure may be changed without departing from the intent and scope of the present disclosure. The scope of the present disclosure is also intended to be defined by the appended claims.

Claims

1. A torque converter (1), characterized in that: The torque converter (1) comprises: a housing (2) for receiving input torque; a pump wheel (3) which is integral with the housing (2) and is rotatable about an axis of rotation (X); a turbine (4) rotatable about a rotation axis (X), the turbine (4) being arranged axially opposite to the pump wheel (3) and being hydraulically driven by the pump wheel (3), the turbine (4) comprising a turbine housing (41) and a plurality of turbine blades (42); A locking clutch (5) comprising an axially displaceable piston disc (51); A shock absorber (6) comprising a driving plate (61), a driven plate (62), and a plurality of elastic members (63) interposed between the driving plate (61) and the driven plate (62), wherein the driving plate (61) is connected to a piston plate (51) of the lock-up clutch (5); an output hub (7) rotatable about the rotation axis (X) and connected to the turbine housing (41) and the driven plate (62) of the vibration damper (6) for outputting torque; The turbine housing (41) and the driven disc (62) are coaxially arranged around the rotation axis (X) and mounted to the output hub (7) by rivets (11), wherein: The output hub (7) includes a first centering surface (S1) for the driven disc (62), the first centering surface (S1) being an axially extending surface, and the driven disc (62) includes a second centering surface (S2) cooperating with the first centering surface (S1). The driven disc (62) includes an annular segment (65b) and a plurality of lugs (64) protruding radially inward from the annular segment (65b), each lug (64) includes a cylindrical inner surface (64i), and the second centering surface (S2) is formed by the cylindrical inner surfaces (64i) of the plurality of lugs (64).

2. The torque converter (1) according to claim 1, characterized in that: The output hub (7) comprises an axially extended portion (71) and a radially extended portion (72), wherein the first centering surface (S1) is formed in the axially extended portion (71).

3. The torque converter (1) according to claim 1, characterized in that: The output hub (7) comprises an axially extended portion (71) and a radially extended portion (72), wherein the first centering surface (S1) is formed in the radially extended portion (72).

4. The torque converter (1) according to any one of claims 1 to 3, characterized in that: The driven plate (62) is formed into an annular shape including a central hole (65o) including an axially extending cylindrical inner surface (65i), and the second centering surface (S2) is formed by the cylindrical inner surface (65i) of the central hole (65o).

5. The torque converter (1) according to any one of claims 1 to 3, characterized in that: The plurality of lugs (64) are equally spaced apart in a circumferential direction around the rotation axis (X).

6. The torque converter (1) according to any one of claims 1 to 3, characterized in that: The number of the lugs (64) is three.

7. The torque converter (1) according to any one of claims 1 to 3, characterized in that: The vibration absorber (6) further comprises a pendulum vibration absorber (8), the pendulum vibration absorber (8) comprising a support plate (81) and a plurality of pendulum masses (82) mounted to the support plate (81), wherein the support plate (81) is connected to the driven disc (62).

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