DE112018006296T5 - ROLLER ORGAN FOR A PENDULUM DAMPING DEVICE - Google Patents

Abstract

Rolling element (20) for a pendulum damping device which is intended for installation in a motor vehicle transmission chain, in particular in a coupling, the rolling element having the following: - a rolling element body (22) which has a cavity (28) on one side surface, - a stabilizer (30) with an elastic member (26) which is received in the cavity, and with a ball (24) which rests against the elastic member (26), the ball protruding at least partially from the cavity.

Description

Technical area

The present invention relates to a sway damping device, in particular for a coupling of a motor vehicle transmission system, and in particular to a rolling element for such a device.

State of the art

A sway damping device is conventionally used to filter vibrations due to the irregularities of an automobile engine. This is because the movements of the cylinders of an explosion engine produce irregularities which vary in particular as a function of the number of cylinders. These irregularities can in turn generate vibrations that can get into the transmission and generate undesirable shocks and noises there. It is thus desirable to provide a device for filtering the vibrations.

The pendulum damping device is conventionally fastened in a rigid manner by means of rivets to a phase disk of a torsional damping device, in particular to a clutch, a hydrodynamic torque converter or a dry or wet double clutch. Such a torsion damping device is e.g. known as the dual mass flywheel.

The pendulum damping device conventionally has an annular holder which is to be set in rotation, and a plurality of pendulum-like oscillating masses which are attached to the holder so that they oscillate about an axis which is parallel to the axis of rotation of the holder which defines the axial direction. The displacement of an oscillating mass in relation to the holder is generally performed by two rolling elements, each of which cooperates with a roller track firmly connected to the holder and a roller track firmly connected to the oscillating mass. The roller tracks of the holder and the oscillating mass extend in such a way that the roller elements rest centrifugally or centripetally on the tracks during operation.

An oscillating mass conventionally consists of two pendulum weights, between which the holder is sandwiched and which are generally firmly connected to one another via a web.

If the pendulum damping device rotates at a low speed of usually less than 800 revolutions / min, in particular when starting, in a braking phase of the vehicle, when the engine is at a standstill or when changing gears, the rolling elements can shift in a chaotic manner and both in the axial direction as well come into contact in the radial direction with the holder and / or with the oscillating masses.

From the registration FR 3 046 649 In the name of the applicant, a pendulum damping device with a spring is known which clamps the oscillating mass on the holder, the spring limiting the displacements of the oscillating mass in the radial direction when the rotation of the pendulum damping device is slowed down. However, this solution does not prevent all shocks.

The aim of the invention is thus to provide a more effective solution for reducing the shocks of the rolling elements and thus also the undesirable noises.

Brief summary of the invention

• - einen Rollorgankörper, der auf einer Seitenfläche einen Hohlraum mit einem Boden aufweist,
• - einen Stabilisator mit einem elastischen Organ, das im Hohlraum aufgenommen ist, und mit einer Kugel, die am elastischen Organ anliegt, wobei die Kugel zumindest teilweise aus dem Hohlraum ragt.

For this purpose, the invention proposes a rolling element with an axis which is provided for a pendulum damping device which itself is intended for installation in a motor vehicle transmission chain, in particular in a coupling, the rolling element having the following:

• - a roller organ body which has a cavity with a bottom on one side surface,
• - A stabilizer with an elastic member that is received in the cavity, and with a ball that rests against the elastic member, the ball at least partially protruding from the cavity.

As will be made clear in the further description, after the pendulum damping device has been assembled, the ball rests axially on a first pendulum weight on one side and on the elastic element on the other side. As a result, the ball presses the rolling element against the second pendulum weight, which is axially opposite the first pendulum weight in relation to the rolling element.

In this way, a rolling element according to the invention is tensioned in the axial direction, as a result of which axial impacts with the holder and / or with the oscillating mass, which are the source of noise, are prevented.

The bottom of the cavity can be formed by the roller organ body or by an element which is separate from the roller organ body.

• - der Hohlraum enthält ein Schmiermittel, vorzugsweise Fett, vorzugsweise zwischen dem Stabilisator und dem Boden des Hohlraums;
• - der Abstand zwischen dem Stabilisator und dem Boden des Hohlraums ist ungleich null, wobei das Schmiermittel zwischen dem Stabilisator und dem Boden des Hohlraums enthalten ist, so dass eine Selbstschmierung der Kugel möglich ist;
• - das elastische Organ des Stabilisators ist eine Halterung, die zumindest teilweise im Hohlraum angeordnet ist und die Kugel enthält;
• - die Halterung weist mindestens eine Lasche auf, die elastisch und radial verformbar ist;
• - das elastische Organ ist eine elastische Scheibe, vorzugsweise eine Federscheibe oder eine Wellenscheibe, die zwischen der Kugel und dem Boden des Hohlraums liegt;
• - das elastische Organ des Stabilisators ist eine Feder, die zwischen der Kugel und dem Boden des Hohlraums liegt; die Feder kann radial zwischen der Kugel und dem Boden des Hohlraums liegen;
• - das Rollorgan weist ferner eine Beilage auf, wobei zumindest ein Abschnitt der Beilage den Boden des Hohlraums bildet;
• - der erste Abschnitt der Beilage weist mindestens eine elastische Lasche auf;
• - der hervorragende Teil der Kugel steht auf einer Strecke, die kleiner oder gleich 1 Millimeter, vorzugsweise kleiner oder gleich 0,5 Millimeter ist, von der Seitenfläche des Rollorgankörpers hervor;
• - der Rollorgankörper weist mehrere Hohlräume auf, die jeweils einen Stabilisator aufnehmen. Der Rollorgankörper kann insbesondere auf jeder seiner beiden Seitenflächen mindestens einen Hohlraum aufweisen, wobei jeder Hohlraum einen Stabilisator aufnimmt.

A rolling element according to the invention can also have one or more of the following optional features:

• - the cavity contains a lubricant, preferably grease, preferably between the stabilizer and the bottom of the cavity;
• the distance between the stabilizer and the bottom of the cavity is non-zero, the lubricant being contained between the stabilizer and the bottom of the cavity, so that self-lubrication of the ball is possible;
• the elastic member of the stabilizer is a holder which is at least partially arranged in the cavity and contains the ball;
• - The holder has at least one tab which is elastically and radially deformable;
• the elastic member is an elastic washer, preferably a spring washer or a wave washer, located between the ball and the bottom of the cavity;
• the elastic member of the stabilizer is a spring placed between the ball and the bottom of the cavity; the spring may lie radially between the ball and the bottom of the cavity;
• the rolling element also has an insert, at least a portion of the insert forming the bottom of the cavity;
• the first section of the insert has at least one elastic flap;
• the protruding part of the ball protrudes from the side surface of the roller organ body for a distance that is less than or equal to 1 millimeter, preferably less than or equal to 0.5 millimeter;
• - The roller organ body has several cavities, each of which accommodates a stabilizer. The roller organ body can in particular have at least one cavity on each of its two side surfaces, each cavity receiving a stabilizer.

The invention also relates to a pendulum damping device with a holder, which has an axis of rotation parallel to the axis and defines a holder roller path, and with an oscillating mass which defines an oscillating mass roller path and comprises a first and a second pendulum weight, a rolling element according to the invention having a surface for rolling on the Holder roller path and defined on the oscillating mass roller path, so that an oscillation of the oscillating mass is guided in relation to the holder.

• - das erste und/oder das zweite Pendelgewicht weist bzw. weisen eine Öffnung auf, wobei der Stabilisator des Rollorgans einen die Öffnung durchquerenden Abschnitt aufweist.

A pendulum damping device according to the invention can also have one or more of the following optional features:

• the first and / or the second pendulum weight has or have an opening, wherein the stabilizer of the rolling element has a section traversing the opening.

The invention also relates to a component for a motor vehicle transmission system, the component being in particular a two-mass swing, a hydrodynamic torque converter or a clutch friction disk with a damping device with a rolling element according to the invention.

• - einen Verbrennungsmotor zum Antreiben des Fahrzeugs und
• - ein Bauteil für ein erfindungsgemäßes Übertragungssystem.

According to another of its aspects, the invention also relates to a vehicle drive train which has the following:

• - an internal combustion engine for driving the vehicle and
• - A component for a transmission system according to the invention.

Figure list

• - 1 eine Pendeldämpfungsvorrichtung mit mehreren erfindungsgemäßen Rollorganen;
• - 2a und 2b eine Ausführungsform eines erfindungsgemäßen Rollorgans, wobei der Stabilisator am Rollorgankörper angebracht ist (2b) oder nicht (2a);
• - 3a und 3b perspektivische Ansichten des Stabilisators eines erfindungsgemäßen Rollorgans unter zwei verschiedenen Betrachtungswinkeln;
• - 4 einen radialen Schnitt einer Pendeldämpfungsvorrichtung mit einem erfindungsgemäßen Rollorgan;
• - 5a ein Rollorgan mit einer ersten Ausführungsvariante des Stabilisators;
• - 5b eine Option des Rollorgans aus 5a;
• - 5c ein Rollorgan mit einer zweiten Ausführungsvariante des Stabilisators;
• - 6a einen radialen Schnitt einer Pendeldämpfungsvorrichtung mit einem Rollorgan gemäß einer dritten Ausführungsvariante des Stabilisators;
• - 7a einen radialen Schnitt eines Rollorgans gemäß einer vierten Ausführungsvariante des Stabilisators;
• - 6b und 7b eine Explosionsansicht eines Rollorgans gemäß 6a bzw. 7a.

Further features and advantages of the invention can also be found on reading the following description and on viewing the accompanying drawings. Show in it:

• - 1 a pendulum damping device with several rolling elements according to the invention;
• - 2a and 2 B an embodiment of a roller organ according to the invention, wherein the stabilizer is attached to the roller organ body ( 2 B) or not ( 2a) ;
• - 3a and 3b perspective views of the stabilizer of a rolling element according to the invention from two different viewing angles;
• - 4th a radial section of a pendulum damping device with a rolling element according to the invention;
• - 5a a rolling element with a first variant of the stabilizer;
• - 5b an option of the roller organ 5a ;
• - 5c a rolling element with a second variant of the stabilizer;
• - 6a a radial section of a pendulum damping device with a rolling element according to a third variant of the stabilizer;
• - 7a a radial section of a rolling element according to a fourth variant embodiment of the stabilizer;
• - 6b and 7b an exploded view of a rolling element according to 6a or. 7a .

Identical reference symbols are used in the various figures to designate identical or similar organs.

Definitions

In contrast to a simple contact, an “elastic contact” creates a pressure of one part on another, whereby the elasticity allows this pressure to be changed by relative displacement of these two parts.

Unless otherwise stated
"Axial" means "parallel to the axis of rotation Y of the rolling element", ie in the position attached to the pendulum damping device also "parallel to the axis of rotation X of the pendulum damping device";
"Radial" means "along a transverse axis that intersects the axis of rotation of the roller organ".

The thickness is measured along the X axis.

“Motor vehicle” is to be understood not only as passenger vehicles, but also commercial vehicles, which in particular includes trucks, vehicles for public transport or agricultural vehicles.

Two parts are also known as “rigidly connected” or “paired” when they are permanently locked together. This blocking can result from a direct attachment of the first part to the second part or from their attachment via one or more intermediate parts.

Unless otherwise stated, the verbs “comprise”, “have” or “contain” are used in a broad sense, i.e. not to be understood as limiting.

Detailed description

In 1 is a pendulum damping device 10 shown with several rolling elements according to the invention. As shown, it has four oscillating masses attached to a holder 12 with an axis X are attached, each oscillating mass having a first and a second pendulum weight 14 ₁ or. 14 ₂ has that via a web 16 are paired with each other. One of the pendulum weights is not shown, around the rolling elements 20th , in this case roles, to make visible.

The holder is conventionally made of a sheet metal, generally made of steel, with a customary thickness of less than 10 mm, preferably less than 9 mm, preferably less than 8 mm. Several holder windows traverse the holder along its thickness.

Each oscillating mass is conventionally via two rolling elements 20th that each traverse a window of the holder and the movement of the oscillating mass in relation to the holder 12 lead by being on a retainer runway 17th and on a footbridge 16 roll, swinging on the holder 12 appropriate.

The oscillating masses are preferably distributed around the X axis at the same angle. Their number is preferably more than two and / or less than eight. The device can in particular comprise three, four, five or seven oscillating masses.

2a Figure 3 is a close-up view of an in 1 illustrated roller organ 20th , being the stabilizer 30th from the body 22nd of the rolling element, in this example a role, is separated. The body 22nd defines a first and a second side surface 22 ₁ and 22 ₂ which in the illustrated embodiment extend essentially perpendicular to the Y axis. The roll organ 20th is capable of rolling in relation to its surroundings. The roll organ 20th can be rotated around the Y axis. The body 22nd can roll. On the first side surface 22 ₁ is a cavity 28 educated. The body 22nd finally defines a cylindrical rolling surface 22 ₃ with a Y axis connecting the side surfaces so that it is on the holder 12 and on the jetty 16 can roll. The roll organ 20th is in relation to the holder 12 and on the jetty 16 rotatable. The stabilizer 30th has a ball 24 and an elastic organ 26th on. The elastic organ 26th can be a bracket to hold the ball 24 be. The ball 24 can have a spherical shape.

2 B shows the same items as 2a , being the stabilizer 30th in one in the cavity 28 of the roller organ body 22nd appropriate position.

In the example illustrated, the bracket is 26th designed to hold the ball by elastic compression with deformable tabs inside it. The tabs can be distributed around the Y axis at the same angle. The tabs are preferably elastically deformed. The tabs are radially deformable. The holder that contains the ball is clamped or clipped in the cavity of the roller organ body so that it is held within the cavity.

The cavity 28 has a bottom and a side wall. The bottom of the cavity 28 is thus through the body 22nd of the roller organ. The cavity 28 can be cylindrical and have a base diameter d. The stabilizer 30th has a diameter D, the diameter D being greater than the diameter d.

If the rolling element described above is as in 1 shown in one in one When the pendulum damping device is in its position, part of the ball protrudes from the body 22nd of the roller organ 20th and is due to a first pendulum weight 14 ₁ on. The ball can protrude over a section U from the roller organ body. The distance can be between 0.1 and 1 mm (millimeter and is preferably in the order of magnitude of 0.5 mm. As a result, it presses the roller organ body against the pendulum weight, which is axially opposite the first pendulum weight, via the holder. that the rolling element inclines and is exposed to shocks in the axial direction.

Alternatively, the side surface of the pendulum weight 14 ₁ at which the ball 24 rests, have a recess. With this recess it is possible to adjust the axial thickness of the pendulum weight 14 ₁ and thus the general axial space consumption of the pendulum damping device 10 to reduce.

There is preferably a lubricant reserve in the cavity 18th , preferably fat provided. Once the stabilizer is in place in the cavity, the lubricant is preferably contained between the bottom of the cavity and the stabilizer. The rotation of the ball by its friction on a pendulum weight advantageously leads to its own lubrication, since part of the ball is in direct contact with the lubricant. The distance between the ball 24 and the bottom of the cavity can be between 1 and 0.1 mm (millimeters) and is preferably on the order of 0.5 mm.

The use of a ball as a contact element with a pendulum weight advantageously enables a reduction in the friction between the ball and the pendulum weight. By using a ball, a mechanically simple design of the stabilizer is also possible.

According to the embodiment of the pendulum damping device, the force which is required to keep the rolling element pressed in the axial direction is preferably between 0.1 N and 0.6 N.

The sphere can have a diameter that is between 0.2 mm and 1.5 mm. The ball 24 is preferably made of steel, ceramic or a plastic material. The bracket 26th consists advantageously of alloyed spring steel. The body 22nd the roller organ is made of steel, for example.

The inventors have found that with a plastic roller it is possible to attenuate the noises generated by contact with the holder and / or with the steel pendulum weights. However, due to the high compressive stresses on the roller when it comes into contact with the holder and / or with the pendulum weights, a plastic roller is not a solution that can be considered.

The elastic member can consist of an elastic washer, such as a spring washer or a wave washer, which lies between the bottom of the cavity and the ball.

The 3a and 3b show the stabilizer at two different angles 30th in the same embodiment as in the figures described above.

4th FIG. 11 shows a radial section of part of one as in FIG 1 pendulum damping device shown. In the embodiment shown, the rolling element is 20th radially in contact with the web 16 and the holder 12 . It can clearly be seen that the ball 24 out of the body 22nd of the roller organ protrudes. This allows the ball to axially on one of the pendulum weights 14th rest, which leads to the fact that the rolling element is pressed against the opposite pendulum weight. The gap 18th advantageously forms a lubricant reserve.

The first variant of the stabilizer 30th that are in the 5a and 5b shown differs in that the elastic organ 26th can be a spring and preferably a helical spring. The coil spring can extend between a first end and a second end. The first end can go straight to the bottom of the cavity 28 be in touch. The second end can be with the ball 24 be in touch.

The ball 24 may have a first part which is, for example, cylindrical, and a second part which is, for example, hemispherical. The hemispherical second part can bear axially on the first pendulum weight, and the first part can bear axially on the elastic member. Alternatively, the ball 24 have a spherical shape.

The roll organ 20th can be an axial protuberance 23 exhibit. Preferably, the second side surface 22 ₂ leading to the first face 22 ₁ with the cavity 28 is opposite, the axial protuberance 23 exhibit. The protuberance 23 is suitable for the area of friction between the rolling element 20th and one of the pendulum weights 14 ₁ , 14 ₂ to reduce. The protuberance 23 is not exclusive to the first variant of the stabilizer 30th connected.

The second variant of the stabilizer 30th , in the 5c shown differs from the first variant in that the stabilizer 30th in addition, a supplement 40 having. The leaflet 40 can be used to form the Bottom of the cavity 28 be suitable. The bottom of the cavity 28 is thus through one of the body 22nd formed of the roller organ separate element. The leaflet 40 can extend axially between a first end 41 and a second end 42 extend. The leaflet 40 can be a first section 43 with the first ending 41 and a second section 44 with the second end 42 include. The leaflet 40 can be made of plastic.

The first paragraph 43 can be cylindrical in shape. The first paragraph 43 is to slide into the cavity 28 suitable. The cavity 28 can be continuous. The first paragraph 43 and especially the first end, for example 41 can the bottom of the cavity 28 form. Thus is the bottom of the cavity 28 by one of the body 22nd formed of the roller organ separate element. The first end of the spring can be connected to the first section 43 the supplement 40 be in touch.

The second section 44 can be cylindrical in shape. The second section 44 can the second side face 22 ₂ at least partially cover. The second section 44 can be suitable for a friction buffer between the rolling element 20th and one of the pendulum weights 14 ₁ , 14 ₂ to build.

The third variant of the stabilizer 30th that are in the 6a and 6b shown differs from the second variant in that the supplement 40 of the stabilizer 30th also a third section 45 having.

The third section 45 can the second end 42 have, the second portion 44 then axially between the first section 43 and the third section 45 is inserted.

The first section can be a hole 48 exhibit. The hole 48 that is cylindrical, for example, can be the elastic organ 26th embrace and the ball 24 partially include. The bottom of the hole 48 can the bottom of the cavity 28 form. The bottom of the cavity 28 is thus through one of the body 22nd formed of the roller organ separate element. The hole 48 can also on the second section 44 to be available. The hole 48 can also use the second section 44 and on the third section 45 to be available.

The first paragraph 43 can have at least one tab 43 ₁ exhibit. The at least one tab 43 ₁ can be elastically deformable. The at least one tab 43 ₁ can be radially deformable. The at least one tab 43 ₁ is suitable for the supplement 40 through elastic expansion in the cavity 28 to keep. The first paragraph 43 preferably has several tabs 43 ₁ on. The tabs 43 ₁ can be distributed at the same angle around the Y axis. The leaflet 40 and especially the first section 43 who got the ball 24 partially contains is in the cavity 28 of the body 23 of the roller organ 20th clamped or clipped so that their holding within the cavity 28 is guaranteed. The cavity 28 can have notches which are suitable for the head of the elastically deformable tabs 43 ₁ record.

The second side face 22 ₂ of the body 22nd of the roller organ 20th can have a recess that is, for example, circular. The second section 44 the supplement 40 is suitable to fit into this recess. The second side face 22 ₂ and the second section 44 the supplement 40 can with one of the pendulum weights 14 ₁ , 14 ₂ be in touch.

The third section 45 the supplement 40 may be suitable for one on one of the pendulum weights 14 ₁ , 14 ₂ formed opening 15th to traverse. With the third section 45 it is thus possible to reduce the rash of the roller organ 20th to limit and the loss of contact between the rolling element 20th and the jetty 16 to prevent.

With the elastic organ 26th it can be a spring, alternatively a holder, alternatively an elastic disc.

The fourth variant of the stabilizer 30th that are in the 7a and 7b shown differs from the third variant in that the stabilizer 30th also a shell 50 having.

The case 50 extends axially between a first end 51 and a second end 52 . The case 50 can be a first section 53 with the first ending 51 and a second section 54 with the second end 52 include. The case 50 can be made of plastic.

The case 50 is to be inserted into the hole 48 the supplement 40 suitable. The case 50 may be suitable for the bottom of the cavity 28 to build. The bottom of the cavity 28 is thus through one of the body 22nd formed of the roller organ separate element. The second section 54 the shell 50 can in particular the bottom of the cavity 28 form. The floor can be continuous. Alternatively, the bottom of the cavity 28 be discontinuous.

The shell can have a central recess 58 have that for receiving the elastic organ 26th and to partially accommodate the ball 24 suitable is. The first paragraph 53 can be in the form of a cylindrical collar. The side wall of the hole 48 may have a paragraph that goes with this the first section is suitable due to the complementarity of the forms 53 the shell 50 record.

The invention is of course not limited to the described embodiments, which are provided for illustrative purposes only. The elastic organ of the stabilizer can in particular be any organ. The number of cavities and balls is not limiting either. It can e.g. can be considered to form a cavity or a plurality of cavities on one and the same surface on each side surface of the body of the roller member.

QUOTES INCLUDED IN THE DESCRIPTION

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

Patent literature cited

• FR 3046649 [0007]

Claims (14)

Rolling element (20) with the axis (Y), which is provided for a pendulum damping device, which is itself intended for installation in a motor vehicle transmission chain, the rolling element comprising: - a rolling element body (22) which on a side surface (22 ₁ , 22 ₂ ) has a cavity (28) with a bottom, - a stabilizer (30) with an elastic member (26) which is received in the cavity, and with a ball (24) which rests on the elastic member (26), wherein the ball at least partially protrudes from the cavity. Rollorgan after Claim 1 in which the cavity contains a lubricant. Rolling element according to the preceding claim, in which the distance between the stabilizer (30) and the bottom of the cavity is not equal to zero, lubricant being contained between the stabilizer and the bottom of the cavity so that the ball (24) can self-lubricate. Rolling element according to one of the preceding claims, wherein the elastic element of the stabilizer is a holder which is at least partially received in the cavity and contains the ball. Rolling element according to the preceding claim, in which the holder has at least one elastically and radially deformable tab. Rollorgan after one of the Claims 1 to 3 , the elastic member of the stabilizer being an elastic washer, preferably a spring washer or a wave washer, which lies between the ball and the bottom of the cavity. Rollorgan after one of the Claims 1 to 2 the elastic member of the stabilizer being a spring sandwiched between the ball and the bottom of the cavity. Rolling element according to one of the preceding claims, further comprising an insert (40), at least a first section (43) of the insert forming the bottom of the cavity. Rolling element according to the preceding claim, in which the first section (43) of the insert (40) has at least one elastic tab (43 ₁ ). Rolling element according to one of the preceding claims, in which the protruding part of the ball (24) extends over a distance which is less than or equal to 1 millimeter (mm), preferably less than or equal to 0.5 millimeter (mm), from the side surface (22 ₁ , 22 ₂ ) of the roller organ body protrudes. Rolling element according to one of the preceding claims, in which the rolling element body has at least one cavity on each of its two side surfaces, the cavities each receiving a stabilizer (30). Pendulum damping device which is intended for installation in a motor vehicle transmission chain, in particular in a coupling, and has the following: - a holder (12) which has an axis of rotation (X) parallel to the axis (Y) and defines a holder roller track, - an oscillating mass which defines a vibrating mass runway and a first and a second pendulum weight (14 ₁ , 14 ₂ ), - a rolling element (20) according to one of the preceding claims, which defines a surface for rolling on the holder runway and on the vibrating mass runway, so that an oscillation of the Oscillating mass is performed in relation to the holder. Pendulum damping device according to the preceding claim, in which the first and / or the second pendulum weight (14 ₁ , 14 ₂ ) has an opening (15) and the stabilizer (30) of the rolling element (20) has a section traversing the opening. Component for a motor vehicle transmission system, the component being in particular a dual mass flywheel, a hydrodynamic torque converter or a clutch friction disk with a pendulum damping device according to the immediately preceding claim.

Images