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US 2010/0300820 A1Published application

Torsional Vibration Damping System for the Drive Train of a Vehicle

AssigneeZf Friedrichshagen AG

InventorsCora Carlson, Andreas Orlamünder, Thomas Busold, Thomas Dögel

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Abstract

A torsional vibration damper system includes a primary side and a secondary side coupled to the primary side by a damper fluid arrangement for rotation and for relative rotation with respect to one another. The damper fluid arrangement has a first damper fluid which transmits a torque between the primary side and the secondary side and a second damper fluid which is loaded when there is an increase in pressure in the first damper fluid. A rotary feedthrough supplies or removes first damper fluid to or from at least one displacement chamber of the damper fluid arrangement and a pressure fluid generation system for providing first damper fluid to be supplied to the damper fluid arrangement via the rotary feedthrough. The pressure fluid generation system comprises at least two pressure fluid pumps.

Claims29

Dependent claims

Claim at position 1-28. (canceled) · 2 wordsNo dependents Claim 29A torsional vibration damper system for a drivetrain of a vehicle · 237 words7 dependent Claim 35A torsional vibration damper system for a drivetrain of a vehicle · 254 words2 dependent Claim 38A torsional vibration damper system for a drivetrain of a vehicle · 242 words4 dependent Claim 43A torsional vibration damper system for a drivetrain of a vehicle · 261 words2 dependent Claim 45The torsional vibration damper system according to claim 16 · 47 words1 dependent Claim 48A torsional vibration damper system for a drivetrain of a vehicle · 284 words2 dependent Claim 51A torsional vibration damper system for a drivetrain of a vehicle · 265 words3 dependent

-28. (canceled)

A torsional vibration damper system for a drivetrain of a vehicle comprising:

a primary side;
a secondary side;
a damper fluid arrangement;
a damper fluid arrangement configured to couple the primary side to the secondary side for rotation around an axis of rotation and for relative rotation with respect to one another, the damper fluid arrangement comprising:
a first damper fluid having a first compressibility that transmits a torque between the primary side and the secondary side;
a second damper fluid having second compressibility, the second damper fluid being more compressible than the first damper fluid, which is loaded when there is an increase in pressure in the first damper fluid;
at least one displacement chamber defined by the primary side and the secondary side, the at least one displacement chamber containing the first damper fluid, a volume of the at least one displacement chamber configured to be alterable by the relative rotation of the primary side with respect to the secondary side whereby the loading of the second damper fluid by the first damper fluid can be altered;
and
a rotary feedthrough configured to at least one of supply and remove first damper fluid to or from the least one displacement chamber;
and
a pressure fluid generation system configured to provide the first damper fluid to the damper fluid arrangement via the rotary feedthrough, the pressure fluid generation system comprising:
at least two pressure fluid pumps.

9 more elements

A torsional vibration damper system for a drivetrain of a vehicle comprising:

a primary side;
a secondary side;
a damper fluid arrangement;
and
a damper fluid arrangement configured to couple the primary side to the secondary side for rotation around an axis of rotation and for relative rotation with respect to one another, the damper fluid arrangement comprising:
a first damper fluid having a first compressibility that transmits a torque between the primary side and the secondary side;
a second damper fluid having second compressibility, the second damper fluid being more compressible than the first damper fluid, which is loaded when there is an increase in pressure in the first damper fluid;
at least one displacement chamber defined by the primary side and the secondary side, the at least one displacement chamber containing the first damper fluid, a volume of the at least one displacement chamber configured to be alterable by the relative rotation of the primary side with respect to the secondary side whereby the loading of the second damper fluid by the first damper fluid can be altered;
a rotary feedthrough configured to at least one of supply and remove first damper fluid to or from the least one displacement chamber;
and
a pressure fluid generation system configured to provide the first damper fluid to the damper fluid arrangement via the rotary feedthrough, the pressure fluid generation system comprising:
a pressure fluid pump;
and
a pressure fluid pump drive associated therewith, wherein the pressure fluid pump drive comprises a vehicle drive unit.

11 more elements

A torsional vibration damper system for a drivetrain of a vehicle comprising:

a primary side;
a secondary side;
a damper fluid arrangement;
a damper fluid arrangement configured to couple the primary side to the secondary side for rotation around an axis of rotation and for relative rotation with respect to one another, the damper fluid arrangement comprising:
a first damper fluid having a first compressibility that transmits a torque between the primary side and the secondary side;
a second damper fluid having second compressibility, the second damper fluid being more compressible than the first damper fluid, which is loaded when there is an increase in pressure in the first damper fluid;
at least one displacement chamber defined by the primary side and the secondary side, the at least one displacement chamber containing the first damper fluid, a volume of the at least one displacement chamber configured to be alterable by the relative rotation of the primary side with respect to the secondary side whereby the loading of the second damper fluid by the first damper fluid can be altered;
and
a rotary feedthrough configured to at least one of supply and remove first damper fluid to or from the least one displacement chamber;
and
a pressure fluid generation system configured to provide the first damper fluid to the damper fluid arrangement via the rotary feedthrough, the pressure fluid generation system comprising:
a transmission oil pump arranged in a transmission of the vehicle.

9 more elements

A torsional vibration damper system for a drivetrain of a vehicle comprising:

a primary side;
a secondary side;
a damper fluid arrangement;
a damper fluid arrangement configured to couple the primary side to the secondary side for rotation around an axis of rotation and for relative rotation with respect to one another, the damper fluid arrangement comprising:
a first damper fluid having a first compressibility that transmits a torque between the primary side and the secondary side;
a second damper fluid having second compressibility, the second damper fluid being more compressible than the first damper fluid, which is loaded when there is an increase in pressure in the first damper fluid;
at least one displacement chamber defined by the primary side and the secondary side, the at least one displacement chamber containing the first damper fluid, a volume of the at least one displacement chamber configured to be alterable by the relative rotation of the primary side with respect to the secondary side whereby the loading of the second damper fluid by the first damper fluid can be altered;
and
a rotary feedthrough configured to at least one of supply and remove first damper fluid to or from the least one displacement chamber;
and
a pressure fluid generation system configured to provide the first damper fluid to the damper fluid arrangement via the rotary feedthrough, the pressure fluid generation system comprising:
a pressure fluid pump;
and
a pressure fluid pump drive associated with the pressure fluid pump, wherein the pressure fluid pump drive uses a third fluid as a driving medium.

11 more elements

The torsional vibration damper system according to claim 16, wherein the delivery work chamber is connected to a fluid reservoir by a suction line, the suction line including a check valve and configured to deliver the first damper fluid via a pressure line with a check valve.

A torsional vibration damper system for a drivetrain of a vehicle comprising:

a primary side;
a secondary side;
a damper fluid arrangement;
a damper fluid arrangement configured to couple the primary side to the secondary side for rotation around an axis of rotation and for relative rotation with respect to one another, the damper fluid arrangement comprising:
a first damper fluid having a first compressibility that transmits a torque between the primary side and the secondary side;
a second damper fluid having second compressibility, the second damper fluid being more compressible than the first damper fluid, which is loaded when there is an increase in pressure in the first damper fluid;
at least one displacement chamber defined by the primary side and the secondary side, the at least one displacement chamber containing the first damper fluid, a volume of the at least one displacement chamber configured to be alterable by the relative rotation of the primary side with respect to the secondary side whereby the loading of the second damper fluid by the first damper fluid can be altered;
and
a rotary feedthrough configured to at least one of supply and remove first damper fluid to or from the least one displacement chamber;
and
a pressure fluid generation system configured to provide the first damper fluid to the damper fluid arrangement via the rotary feedthrough, the pressure fluid generation system comprising:
a pressure fluid pump comprising a delivery member reciprocating in a delivery work chamber;
and
a drive associated with the delivery member, the drive comprising a drive element which is movable by the driving movement of a vehicle in driving operation and a connection arrangement between the drive element and the delivery member.

11 more elements

A torsional vibration damper system for a drivetrain of a vehicle comprising:

a primary side;
a secondary side;
a damper fluid arrangement;
a damper fluid arrangement configured to couple the primary side to the secondary side for rotation around an axis of rotation and for relative rotation with respect to one another, the damper fluid arrangement comprising:
a first damper fluid having a first compressibility that transmits a torque between the primary side and the secondary side;
a second damper fluid having second compressibility, the second damper fluid being more compressible than the first damper fluid, which is loaded when there is an increase in pressure in the first damper fluid;
at least one displacement chamber defined by the primary side and the secondary side, the at least one displacement chamber containing the first damper fluid, a volume of the at least one displacement chamber configured to be alterable by the relative rotation of the primary side with respect to the secondary side whereby the loading of the second damper fluid by the first damper fluid can be altered;
and
a rotary feedthrough configured to at least one of supply and remove first damper fluid to or from the least one displacement chamber;
and
a pressure fluid generation system configured to provide the first damper fluid to the damper fluid arrangement via the rotary feedthrough, the pressure fluid generation system comprising:
a pressure fluid pump;
and
a pressure fluid pump drive for the pressure fluid pump configured to provide pressure fluid used in a vehicle, wherein the pressure fluid also provides the first damper fluid.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/599,452Filed 22 Apr 2008
Priority: DE 10 2007 021 436.98 May 2007
Published: 2 Dec 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

F15B 11/17
With two or more servomotors: using two or more pumps
F16F 15/16
Suppression of vibrations in rotating systems by making use of members moving with the system: using a fluid or pasty material
B60K 6/12
Prime-movers comprising combustion engines and mechanical or fluid energy storing means: by means of a chargeable fluidic accumulator
B60W 2030/206
Reducing vibrations in the driveline: related or induced by the engine

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