The present application is the U.S. national stage application pursuant to 35 U.S.C. ยง 371 of International Patent Application No. PCT/DE2014/200317, filed Jul. 14, 2014, which application claims priority from German Patent Application No. 10 2013 214 688.4, filed Jul. 26, 2013, German Patent Application No. 10 2013 216 119.0, filed Aug. 14, 2013, and German Patent Application No. 10 2013 222 873.2, filed Nov. 11, 2013, which applications are hereby incorporated by reference in their entireties.
The present invention relates to a turbine torsional vibration damper, in particular a simple torsional vibration damper, for a vehicle, preferably for a drivetrain of a motor vehicle. The invention further relates to a converter or a torque transmission device for a vehicle, in particular for a drivetrain of a motor vehicle, wherein the converter or torque transmission device has a turbine torsional vibration damper according to the invention.
On a crankshaft of a periodically operating internal combustion engine of a motor vehicle, superimposed non-uniformities of rotation occur during rotation of the crankshaft when the motor vehicle is in operation, their nature and/or frequency changing with the speed of the crankshaft. Comparatively severe non-uniformities of rotation develop during operation of the motor vehicle as torque of the internal combustion engine changes, i.e., as the demand for torque from a driver of the motor vehicle changes. Furthermore, torsional vibrations are excited in the drivetrain of the motor vehicle by combustion processes in the internal combustion engine, in particular in traction mode.
To reduce the severe non-uniformities of rotation in the drivetrain, a torsional vibration damper may be utilized, whereas a centrifugal pendulum device is able essentially to eliminate the periodic torsional vibrations in the drivetrain of the motor vehicle over a comparatively large speed range of the internal combustion engine. Torsional vibration dampers are utilized as damping devices in particular between the internal combustion engine and a transmission of the motor vehicle. Thus, torsional vibration dampers are employed, for example, in/on clutch plates of friction clutches or as dual-mass flywheels.
A torsional vibration damper and a separate centrifugal pendulum device have a comparatively large number of components, which makes their production and installation in a drivetrain of a motor vehicle time-consuming and costly. Furthermore, the construction of such a damping arrangement is comparatively expensive. Furthermore, a small axial construction space that is available specifically in small vehicles makes it increasingly problematic to design torsional vibration dampers and centrifugal pendulum devices, for which a relatively large axial construction space is needed.
One object of the invention is to make available an improved torsional vibration damper, in particular an improved simple torsional vibration damper, for a turbine of a hydrodynamic torque converter of a drive rain of a motor vehicle, in particular a converter equipped therewith or a torque transmission device equipped therewith. At the same time, the turbine torsional vibration damper improved according to the invention should require relatively little axial construction space, be simply constructed and guarantee good damping function.
The object of the invention is fulfilled by means of a turbine torsional vibration damper, in particular a simple torsional vibration damper, for a vehicle, preferably for a drivetrain of a motor vehicle; and by means of a converter or a torque transmitting device for a vehicle, in particular for a drivetrain of a motor vehicle. Advantageous refinements, additional features and/or advantages of the invention derive from subordinate claims and a following description.
The torsional vibration damper according to the invention includes a damper part for introducing a torque into the torsional vibration damper and a damper part for extracting the torque from the torsional vibration damper, there being a pendulum mass flange of a centrifugal pendulum device rigidly coupled mechanically with a damper part of the torsional vibration damper. According to the invention, the torsional vibration damper has at least two damper parts for introducing and extracting the torque, while a pendulum mass flange of a centrifugal pendulum device or the centrifugal pendulum device is connected mechanically, in particular is rigidly coupled mechanically, with at least one of the damper parts.
The converter according to the invention, or the torque transmission device according to the invention, is, for example, a rotational assembly, a hydrodynamic torque converter, a damper device, a clutch, a clutch assembly, a converter damper, a turbine damper, a dual-mass converter and/or a dual-mass flywheel, and/or combinations thereof, possibly having a hub. In this case, the converter or the torque transmitting device has a torsional vibration damper according to the invention.
In one embodiment of the invention, a pendulum mass flange is coupled mechanically on the damper input side or on the damper output side with the relevant damper part, the pendulum mass flange being rigidly coupled mechanically with the damper part in a circumferential direction of the torsional vibration damper and possibly also in an axial direction of the torsional vibration damper. The pendulum mass flange may be attached to the damper part indirectly or directly. Furthermore, the pendulum mass flange may be connected materially with the damper part in a single piece, or may be formed integrally with it.
The centrifugal pendulum device may be accommodated comparatively centrally within the torsional vibration damper, the centrifugal pendulum device being provided essentially within an axial external dimension of the torsional vibration damper on/in the actual torsional vibration damper. Furthermore, the centrifugal pendulum device may be provided essentially within an axial external dimension of an energy storage element of the torsional vibration damper on/in the torsional vibration damper.
In embodiments of the invention, the centrifugal pendulum device may be at least partially offset in the axial direction in relation to the energy storage element, the centrifugal pendulum device preferably being provided essentially at the same level next to the energy storage element. Furthermore, the centrifugal pendulum device may be offset axially and radially in relation to the energy storage element. According to the invention, the pendulum mass flange may be firmly connected to a wheel, in particular a turbine wheel, of a hydrodynamic torque converter, to a damper output part, a retainer, a damper input part and/or a piston plate, at least in the circumferential direction.
The pendulum mass flange and/or the damper output part may be located on the wheel, in particular the turbine wheel, of the torque converter. Furthermore, the pendulum mass flange and/or the damper output part may be connected non-rotatingly to the wheel, in particular the turbine wheel, of the torque converter by means of a plug connection or toothing. According to the invention, the retainer may be provided on the damper input side or damper output side of the damper input part, in particular a first side part, on the damper output part, on the piston plate, a friction lining or friction plate of a clutch, and/or separately.
According to the invention, a pendulum mass may be hung on the pendulum mass flange, the pendulum mass preferably being designed as a single or double mass. The centrifugal pendulum device may be designed as a trapezoidal centrifugal pendulum device. Furthermore, the indirect or direct attachment of the pendulum mass flange to the damper part may be accomplished by means of a weld, a fastening element, a rivet, a screw and/or by means of a plug connection or toothing. In addition, the retainer of the torsional vibration damper may be a bow spring retainer or a linear spring retainer.
According to the invention, a damper system, a damper device or a torque transmission device may be made available as a combination of a torsional vibration damper, in particular a simple torsional vibration damper, and a centrifugal pendulum device for a turbine of a torque converter. In this damper device, the torsional vibration damper and the centrifugal pendulum device are positioned in such a way that construction space in the axial direction of the drivetrain and also components can be saved, since no axial construction space has to be made available for a separate pendulum mass flange. In this case, the structural design of the damper device is comparatively simple.
The invention will be explained in greater detail in the following section on the basis of exemplary embodiments, with reference to the appended drawings. Elements or components which have an identical, unambiguous or analogous design and/or function are identified in various figures of the drawings by the same reference label. The following figures each show an embodiment of a turbine torsional vibration damper according to the invention in a schematic half-sectional view, omitting encircling edges, in which:
In
All that is visible of the dry- or wet-running clutch in the figures is friction lining 6 or friction plate 6. A mechanical connection of parts or functional sections of torsional vibration damper 1 according to the invention may be accomplished by a materially single-piece or integral design or connection (also referred to in the following as an attachment or solid connection), or by means of a weld or a fastening device, for example a rivet or a screw, and/or a plug connection or toothing (likewise referred to in the following as an attachment or solid connection).
Respective torsional vibration damper 1, preferably designed as turbine damper 1, has at least two damper parts 10, 20. Specifically, damper input part 10, preferably designed as input flange 10 and/or as first side part 10, and damper output part 20, preferably designed as hub flange 20. Furthermore, second side part 12 may be assigned to first side part 10, in which case damper part 10, 12 then has two side parts 10, 12. The particular damper part 10, 12; 20 here may be designed closed in multiple parts, or formed in a single part, a single piece, a material single piece or integrally.
According to the invention, torsional vibration damper 1 has centrifugal pendulum device 2 or centrifugal pendulum 2, which is preferably operatively connected to damper output part 20 and/or turbine wheel 400 in an indirect or direct mechanical operative connection. In this case, in particular pendulum mass flange 200 or pendulum flange 200 of centrifugal pendulum device 2 is connected, at least non-rotatingly, to damper output part 20 and/or turbine wheel 400. This attachment or solid connection may also be set up in axial direction A and/or in radial direction R of torsional vibration damper 1.
The mechanical operative connection between pendulum mass flange 200 and damper output part 20 and/or turbine wheel 400 is in particular an indirect or direct attachment by means of a weld (not depicted in the drawings), a fastening device, for example a screw (not depicted in the drawings), or a rivet, and/or by means of a plug connection or toothing. Pendulum masses 210, for example in each case two mass halves positioned axially one behind the other (double mass) or only a simple mass (single mass, not depicted in the drawings), are hung on pendulum mass flange 200 so that they can swing.
Individual construction features of the invention are explained below in greater detail on the basis of
Thus, it is possible, for example, to attach pendulum mass flange 200 to damper output part 20 integrally, if appropriate, while damper output part 20 is firmly connected to turbine wheel 400 (
In addition, retainer 110 may be firmly connected to turbine wheel 400 on the damper output side, in which case this attachment may also include damper output part 20 in addition (
In the embodiments explained so far, energy storage elements 30 and pendulum masses 210 may be positioned radially one above the other, energy storage elements 30 preferably being provided to run radially on the inside and pendulum masses 210 radially on the outside, each in circumferential direction U of torsional vibration damper 1. Reversed embodiments are possible. It is naturally possible to provide a (possibly partial) axial side-by-side axial arrangement of energy storage elements 30 with pendulum masses 210 (
Piston plate 100 may assume a function of retainer 110 (
Damper input part 10 may possibly be attached integrally to piston plate 100 (
A non-rotating connection of damper output part 20 with turbine wheel 400 in circumferential direction U may be achieved by means of a plug connection and/or toothing, possibly with a hub (
If damper output part 20 is supported axially movably, for example on a hub (
Damper input part 10 or first side plate 10 may be located axially movably by means of a plug connection and/or toothing on a hub (
Damper input part 10 or first side plate 10 may be fastened to piston plate 100 by means of a separate component (
Instead of being firmly connected to piston plate 100, damper input part 10 may also be firmly connected to friction lining 6 or friction plate 6 of the dry-/wet-running clutch (
Thus, damper input part 10 may be attached to piston plate 100 in a center section thereof (
Damper input part 10 may be fastened radially outside to piston plate 100, and be braced radially inside indirectly (projection and/or hub of piston plate 100) or directly on transmission input shaft 5 (
In principle, all features of the embodiments of the invention are combinable with each other. For example, embodiments of the invention having bow spring retainer 110 (
Furthermore, retainer 110 may be firmly connected radially outside to friction lining 6 or friction plate 6 (
Number | Date | Country | Kind |
---|---|---|---|
10 2013 214 688 | Jul 2013 | DE | national |
10 2013 216 119 | Aug 2013 | DE | national |
10 2013 222 873 | Nov 2013 | DE | national |
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/DE2014/200317 | 7/14/2014 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2015/010698 | 1/29/2015 | WO | A |
Number | Name | Date | Kind |
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6026940 | Sudau | Feb 2000 | A |
8490766 | Maienschein et al. | Jul 2013 | B2 |
8561499 | Schiemann | Oct 2013 | B1 |
20120111684 | Kombowski et al. | May 2012 | A1 |
20120305358 | Maienschein | Dec 2012 | A1 |
Number | Date | Country |
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102105712 | Jun 2011 | CN |
102414041 | Apr 2012 | CN |
102762889 | Oct 2012 | CN |
19804227 | Aug 1999 | DE |
102011010344 | Aug 2011 | DE |
Number | Date | Country | |
---|---|---|---|
20160178030 A1 | Jun 2016 | US |