Torsional vibration damping arrangement

Patent metadata

Field	Value
Publication number	US-9303744-B2
Application number	US-201013699945-A
Country	US
Kind code	B2
Filing date	Dec 3, 2010
Priority date	May 25, 2010
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A torsional vibration damping arrangement, particularly for a drivetrain with an automatic transmission, includes an input region and an output region, wherein a first torque transmission path and parallel thereto a second torque transmission path and a coupling arrangement for superposing the torques transmitted via the torque transmission paths are provided between the input region and the output region. The torsional vibration damping arrangement further includes at least in the first torque transmission path a phase shifter arrangement for generating a phase shift of rotational irregularities transmitted via the first torque transmission path relative to rotational irregularities transmitted via the second torque transmission path.

First claim

The invention claimed is:

1. A torsional vibration damping arrangement, comprising:
an input region;
an output region;
a first torque transmission path provided between the input region and the output region;
a second torque transmission path provided between the input region and the output region, and parallel to the first torque transmission path;
a coupling arrangement provided between the input region and the output region, said coupling arrangement being a planetary transmission arrangement constructed to superpose torques transmitted via the first and second torque transmission paths; and
a phase shifter arrangement located at least in the first torque transmission path and constructed to generate a phase shift of rotational irregularities transmitted via the first torque transmission path relative to rotational irregularities transmitted via the second torque transmission path.

2. The torsional vibration damping arrangement according to claim 1 , wherein the phase shifter arrangement includes a first oscillation system having a primary side and a secondary side which is rotatable relative to the primary side around an axis of rotation against a force of a spring arrangement.

3. The torsional vibration damping arrangement according to claim 2 , wherein the output region includes a further oscillation system having a primary side and a secondary side which is rotatable relative to the primary side of the further oscillation system against an action of a further spring arrangement.

4. The torsional vibration damping arrangement according to claim 1 , further comprising:
a housing arrangement which is rotatable around an axis of rotation, is fillable with a fluid, and surrounds at least the coupling arrangement.

5. The torsional vibration damping arrangement according to claim 4 , wherein the housing arrangement surrounds at least a portion of the phase shifter arrangement.

6. The torsional vibration damping arrangement according to claim 5 , wherein at least part of the phase shifter arrangement is arranged outside of the housing arrangement.

7. The torsional vibration damping arrangement according of claim 4 , wherein a torque flow from the housing arrangement and the input region to a driven member cannot be interrupted.

8. The torsional vibration damping arrangement according to claim 7 , wherein the driven member comprises a driven hub capable of coupling to a driven shaft, for common rotation around an axis of rotation.

9. The torsional vibration damping arrangement according to claim 8 , wherein the driven shaft includes a transmission input shaft.

10. The torsional vibration damping arrangement according to claim 4 , wherein the housing arrangement comprises a drive formation for driving a fluid pump for conveying fluid into the housing arrangement.

11. The torsional vibration damping arrangement according to claim 1 , wherein the planetary transmission arrangement includes a planet gear carrier which is connected to the second torque transmission path and which has a plurality of planet gears rotatably supported thereon.

12. The torsional vibration damping arrangement according to claim 11 , wherein the planetary transmission arrangement includes:
a first coupling gear arrangement in meshing engagement with the planet gears and connected to the first torque transmission path, and
a second coupling gear arrangement in meshing engagement with the planet gears and connected to the output region.

13. The torsional vibration damping arrangement according to claim 12 , wherein the first coupling gear arrangement in connection with the planet gears and the second coupling gear arrangement in connection with the planet gears provide transmission ratios that are identical to one another.

14. The torsional vibration damping arrangement according to claim 12 , wherein the first coupling gear arrangement in connection with the planet gears and the second coupling gear arrangement in connection with the planet gears provide transmission ratios that are different from one another.

15. The torsional vibration damping arrangement according to claim 12 , wherein each one of the first coupling gear arrangement and the second coupling gear arrangement comprises a respective ring gear arrangement.

16. The torsional vibration damping arrangement according to claim 12 , wherein each one of the first coupling gear arrangement and the second coupling gear arrangement comprises a respective sun gear arrangement.

17. The torsional vibration damping arrangement according to claim 3 , wherein at least one of the first oscillation system and the further oscillation system includes at least two vibration dampers arranged in series with one another, each of the at least two vibration dampers including a primary side and a secondary side which is rotatable relative to the primary side.

18. The torsional vibration damping arrangement according to claim 3 , wherein at least one of the first oscillation system and the further oscillation system includes at least two vibration dampers working parallel with one another, and each of the at least two vibration dampers including a primary side and a secondary side which is rotatable relative to the primary side.

19. The torsional vibration damping arrangement according to claim 3 , wherein at least one of the first oscillation system and the further oscillation system comprises a speed-adaptive vibration damping arrangement having at least one deflection mass which can be deflected in a circumferential direction from a basic position and which in so doing changes its distance from the axis of rotation.

20. The torsional vibration damping arrangement according to claim 3 , wherein at least one of the first oscillation system and the further oscillation system includes a fixed-frequency vibration damping arrangement having at least one oscillation mass which can be deflected against an action of a return spring arrangement.

21. The torsional vibration damping arrangement according to claim 3 , further comprising:
a friction damping arrangement associated with at least one of the first oscillation system and the further oscillation system, the friction damping arrangement opposing a relative rotation between the primary side and the secondary side of at least one of the first oscillation system and the further oscillation system.

22. The torsional vibration damping arrangement according to claim 1 , wherein the torsional vibration damping arrangement is for a drivetrain with an automatic transmission.

23. A drivetrain for a vehicle, comprising:
an automatic transmission with a transmission input shaft and a torque flow interrupting arrangement internal to the transmission for selectively interrupting a torque transmission connection between the transmission input shaft and a transmission output shaft; and
a torsional vibration damping arrangement according to claim 1 , wherein the output region is coupled with the transmission input shaft region for common rotation.

Assignees

• Dögel Thomas
• Kühner Michael
• Hoffelner Ingrid
• Zahnradfabrik Friedrichshafen

Inventors

• Dögel Thomas
• Kühner Michael
• Hoffelner Ingrid

Classifications

• F16H57/0006

  Vibration-damping or noise reducing means specially adapted for gearings (devices for varying tension of belts, ropes or chains with damping means F16H7/0829; toothed members with construction providing vibration damping F16H55/14; reducing vibrations or noise of the gearbox casing F16H57/028; suppression of vibrations or noise of gear selectors F16H59/0208; control of hydrostatic fluid gearing preventing or reducing vibrations or noise F16H61/4183) · CPC title

• H02K7/006

  Structural association of a motor or generator with the drive train of a motor vehicle · CPC title

• F16H2045/021

  three chamber system, i.e. comprising a separated, closed chamber specially adapted for actuating a lock-up clutch · CPC title

• F16F15/1478 Primary

  with a planetary gear system · CPC title

• F16H2045/0268

  the damper comprising a gearing · CPC title