Patent application number | Description | Published |
20090127040 | Torsional Vibration Damper Arrangement - A torsional vibration damper with a primary side and a secondary side, wherein rotation of the primary side relative to the secondary side causes displacement of hydraulic fluid from at least one displacement chamber and compression of pneumatic fluid in at least one compensating chamber. A first displacement chamber assembly includes a pair of axially opposed end walls bounding each displacement chamber in both axial directions and a circumferential wall bounding it in one radial direction, and a second displacement chamber assembly bounds it in the other radial direction. A sealing arrangement is provided between the end walls and the second displacement chamber assembly to produce an essentially fluid-tight closure of the at least one displacement chamber. | 05-21-2009 |
20100043593 | TORSIONAL VIBRATION DAMPER ARRANGEMENT - Disclosed is a torsional vibration damper arrangement, especially for the drive train of a vehicle, including a primary side and a secondary side which is coupled to the primary side by a damper fluid arrangement in order for the primary side and the secondary side to rotate about an axis of rotation and rotate relative to one another. The damper fluid arrangement encompasses a first damper fluid that has low compressibility and transmits torque between the primary side and the secondary side as well as a second damper fluid which is more compressible and is loaded when the pressure of the first fluid increases. The torsional vibration damper arrangement is characterized in that a volume containing the second damper fluid is disposed outside the primary side and outside the secondary side and does not rotate about the axis of rotation along with the primary side and the secondary side. | 02-25-2010 |
20100090382 | TORSIONAL VIBRATION DAMPER ARRANGEMENT - A torsional vibration damper arrangement, includes a primary side and a secondary side coupled to the primary side via a damper fluid to rotate about a rotational axis relative to each other. The damper fluid arrangement includes a first damper fluid, in a first damper fluid chamber arrangement, which transmits a torque between the primary side and the secondary side, and a second damper fluid, in a second damper fluid chamber, which is loaded when the pressure of the first damper fluid in the first damper fluid chamber is increased. The second damper fluid chamber arrangement includes a cylindrical chamber units arranged radially outside and/or radially inside in relation to the first damper fluid chamber arrangement and one after the other in the circumferential direction, a separating element separating the first damper fluid from the second damper fluid and being displaced radially when the pressure in the chamber unit changes. | 04-15-2010 |
20100300820 | Torsional Vibration Damping System for the Drive Train of a Vehicle - 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. | 12-02-2010 |
20130139641 | Torsion Vibration Damper Assembly And Vibration Damper Device, In Particular In A Torsion Vibration Damper Assembly - A torsional vibration damper arrangement includes a vibration damper device ( | 06-06-2013 |
20140047949 | GEARBOX, IN PARTICULAR FOR THE DRIVE TRAIN OF A VEHICLE - A transmission includes a transmission input element, a transmission output element and a gear ratio changing system in a torque path between the transmission input element and the transmission output element. A torsional vibration damping arrangement with an input region and an output region is provided in the torque path. 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 includes 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. | 02-20-2014 |
20140102398 | DRIVE SYSTEM FOR A VEHICLE - A drive system for a vehicle comprises an internal combustion engine switchable between operating modes of different performance capability, and a torsional vibration damping arrangement that comprises a primary side preferably coupled to a crankshaft and a secondary side rotatable with respect to the primary side against the action of a damper element arrangement. The damper element arrangement has a stiffness which increases as the load torque to be transmitted increases, and the primary side and the secondary side are in a limiting relative rotational position with respect to one another during transmission of a maximum torque which can be delivered in an operating mode with lower performance capability at a maximum torque rotational speed, and the damper element arrangement provides a limiting stiffness in the limiting relative rotational position such that a natural frequency of the torsional vibration damping arrangement is below the maximum torque speed. | 04-17-2014 |
20140123929 | DRIVE SYSTEM FOR A VEHICLE - A drive system for a vehicle has an internal combustion engine and a torsional vibration damping arrangement. The internal combustion engine is switchable between operating modes of different performance. The torsional vibration damping arrangement includes an input region, which can be driven in rotation, and an output region. A first torque transmission path is provided between the input region and output region, and a second torque transmission path is provided parallel thereto. A coupling arrangement superposes the torques transmitted via the torque transmission paths, and a phase shifter arrangement is provided in at least one torque transmission path for generating a phase shift of rotational irregularities transmitted via the one torque transmission path in relation to the rotational irregularities transmitted via the other torque transmission path. | 05-08-2014 |
Patent application number | Description | Published |
20100043593 | TORSIONAL VIBRATION DAMPER ARRANGEMENT - Disclosed is a torsional vibration damper arrangement, especially for the drive train of a vehicle, including a primary side and a secondary side which is coupled to the primary side by a damper fluid arrangement in order for the primary side and the secondary side to rotate about an axis of rotation and rotate relative to one another. The damper fluid arrangement encompasses a first damper fluid that has low compressibility and transmits torque between the primary side and the secondary side as well as a second damper fluid which is more compressible and is loaded when the pressure of the first fluid increases. The torsional vibration damper arrangement is characterized in that a volume containing the second damper fluid is disposed outside the primary side and outside the secondary side and does not rotate about the axis of rotation along with the primary side and the secondary side. | 02-25-2010 |
20100090382 | TORSIONAL VIBRATION DAMPER ARRANGEMENT - A torsional vibration damper arrangement, includes a primary side and a secondary side coupled to the primary side via a damper fluid to rotate about a rotational axis relative to each other. The damper fluid arrangement includes a first damper fluid, in a first damper fluid chamber arrangement, which transmits a torque between the primary side and the secondary side, and a second damper fluid, in a second damper fluid chamber, which is loaded when the pressure of the first damper fluid in the first damper fluid chamber is increased. The second damper fluid chamber arrangement includes a cylindrical chamber units arranged radially outside and/or radially inside in relation to the first damper fluid chamber arrangement and one after the other in the circumferential direction, a separating element separating the first damper fluid from the second damper fluid and being displaced radially when the pressure in the chamber unit changes. | 04-15-2010 |
20100300820 | Torsional Vibration Damping System for the Drive Train of a Vehicle - 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. | 12-02-2010 |
20130139641 | Torsion Vibration Damper Assembly And Vibration Damper Device, In Particular In A Torsion Vibration Damper Assembly - A torsional vibration damper arrangement includes a vibration damper device ( | 06-06-2013 |