Abstract: A combined power transmission and drive unit for the application in drive trains in hybrid systems with at least two prime movers that can be coupled via a power transmission unit with a consumer, in particular transmission. Between a first prime mover and the power transmission unit, a device is provided for connecting/disconnecting the power flow between the latter and the power transmission unit, including a friction clutch that can be actuated by a pressure medium, including a first clutch part and a second clutch part which can be brought in active connection with one another via a servo unit featuring a piston element that can be pressurized by a pressure medium. A combined power transmission and drive unit according to the invention, wherein the means are provided for controlling a rotation speed difference of a flow medium on either face side of a piston element.

Abstract: An apparatus and method of controlling a torque transmitting apparatus having multiple selectively engageable couplers is provided. The multiple couplers may be selectively engaged and disengaged to provide a mechanical, friction or fluid coupling between portions of the torque transmitting apparatus and other components of a vehicle powertrain during various operational stages. The control apparatus includes a fluid pressure control device and a fluid flow control device.

Abstract: The present invention relates to a torque transmission device in the drive train of a motor vehicle for torque transmission between a drive unit, in particular an internal combustion engine, a gearbox, and with a hydrodynamic torque converter. The torque converter lockup clutch comprises outer lamellae which work together with inner lamellae to connect to a driver plate which is connected to a torsional vibration damper. In order to provide a torque transmission device which has a long service life and can be produced economically, a coupling is fastened to the inner lamella carrier in such a manner that it cannot be turned, and to the radially inner edge area of the driver plate which bounds an annular space in which the radially inner edge area of the driver plate can be moved in the axial direction.

Abstract: A lock-up control valve (550) selectively applies secondary pressure P (L/U) to the apply side hydraulic chamber of a torque converter (200) or to the release side hydraulic chamber thereof. The lock-up control valve (550) has a valve element (600), a first port (611), a second port (612), a third port (613), a fourth port (614), and a drain port (616). The valve element (600) has a first land (601) and a second land (602). The diameter of the second land (602) is larger than that of the first land (601).

Abstract: A torsional vibration damper for a bridging clutch of a hydrodynamic clutch arrangement has a drive-side damping device, which can be brought into working connection with the housing of the clutch arrangement and is provided with a drive-side transmission element, which acts via a drive-side energy-storage group on an intermediate transmission element, and a takeoff-side damping device, which uses a takeoff-side group of energy-storage devices to establish a working connection between the intermediate transmission element and a takeoff-side transmission element, which is connected to a takeoff-side component of the hydrodynamic clutch arrangement. A predetermined stiffness ratio is obtained between the energy-storage devices of a first group and the energy-storage devices of a second group, and the energy-storage devices of the drive-side group have a stiffness different from that of the assigned energy-storage devices of the takeoff-side group.

Abstract: A lock-up device 7 includes a front cover 2, an impeller 3, a turbine 4, and a piston 22 positioned to divide a space between the front cover 2 and the turbine 4, and is engageable with the front cover 2. The piston 22 is formed with a plurality of projections 41 extending in the radial direction on a surface 42. The projection 41 has a straight front edge 51 and a straight rear edge 52, and an arced radially outer edge 53 and radially inner edge 54. The rear edge 52 in the rotation direction overlaps a straight line Ls connecting a radially inner end 52a with the rotation center O, or the rear edge 52 in the rotation direction is inclined to the straight line Ls such that a radially outer end 52b is positioned rearward of the straight line Ls in the rotation direction.

Abstract: A force transmission device having a hydrodynamic component, disposed between an input and an output, comprising at least a pump shell and a turbine shell, forming an operating cavity in combination, with an actuatable clutch device for at least partially bridging the hydrodynamic component, comprising a clutch component for at least partially bridging the hydrodynamic component, comprising a first clutch component connected with the input and a second clutch component at least indirectly connected to the output, which can be brought into operative engagement with one another through an actuation device, with a vibration absorber disposed in the force flow at least subsequent to the actuatable clutch device, with a housing coupled with the input or with an element coupled non-rotatably to the input and coupled with the pump shell.

Abstract: The invention relates to a hydrodynamic coupling having two blade wheels, namely, an outer wheel and an inner wheel. The hydrodynamic coupling also has a coupling shell. The invention provides that the inner wheel and the coupling shell each have one hole and the holes are situated on the hydrodynamic coupling and can be moved into positions that are aligned with one another when the inner wheel and the coupling shell are rotated. The hole of the coupling shell is larger than the hole of the inner wheel. A measuring pin for passing through the two holes.

Abstract: A hydrodynamic clutch includes an impeller and a turbine wheel which jointly form a toroidal working chamber that is or can be filled with a working medium. A throttle plate is provided which can be moved in the axial direction of the hydrodynamic clutch in order to be optionally introduced into the working chamber and/or be displaced within the working chamber. The throttle plate extends in the area of a central diameter of the working chamber in the circumferential direction of the hydrodynamic clutch. The intake end of the throttle plate extends parallel or substantially parallel to the axis of rotation of the hydrodynamic clutch from the perspective of an axial section across the hydrodynamic clutch, the working medium flowing against the intake end of the throttle plate in a circular flow.

Abstract: A lock-up clutch control method and apparatus controls a lock-up state of a torque converter interposed between a drive unit and a transmission on a vehicle. Data indicative of the operating condition of an antilock braking system can be provided as input to the control method and apparatus and affect the lock-up state of the torque converter.

Abstract: The apparatus of the present invention provides a torque converter for an automatic transmission. The torque converter includes an electronically controlled converter clutch disposed within a torque converter housing. A release passage in fluid communication with the electronically controlled converter clutch is defined between standard functional torque converter components. The release passage is configured to transfer hydraulic fluid to release the electronically controlled converter clutch. An apply passage in fluid communication with the electronically controlled converter clutch is also defined between standard functional torque converter components. The apply passage is configured to transfer hydraulic fluid to engage the electronically controlled converter clutch. The electronically controlled converter clutch is characterized by the absence of a dedicated hydraulic supply line.

Abstract: A pump drive and a method thereof to dispense a liquid drug from a container having a plunger piston are disclosed. The pump drive provides a unidirectional clutch provided about a rotational axis which supports centrally a wheel. The clutch has an inner race operably connected to the plunger piston, wherein the clutch is configured to rotate both the inner race about the axis in unison with rotation of the wheel in only a first direction to advance the plunger piston, and to let the wheel rotate relative to the inner race about the axis in a second direction opposite to the first direction without advancing the piston plunger. The drive in one embodiment includes at least one shape memory alloy wire which when excited rotates the wheel in the first rotational direction to advance the piston plunger and dispense the liquid drug from the container.

Abstract: A wet clutch and to a hydrodynamic torque converter with a respective wet clutch as converter lockup clutch. In order to provide a good response of the wet clutch, the support elements for the friction surfaces and for the opposite friction surfaces of the wet clutch are axially supported relative to one another, at least over a partial portion of the actuation travel of the wet clutch.

Abstract: A plugged filter detection system includes a valve housed within a cavity defining an initial inlet for receiving fluid at an inlet pressure before fluid enters a filter, a final inlet for receiving fluid at an outlet pressure after the fluid exits the filter, and a switch port for directing fluid to a switch to activate the switch. The inlet pressure biases the valve in a first direction and the outlet pressure biases the valve in a second direction substantially opposing the first direction. The valve is movable from a first position to a second position to unblock the switch port, thereby allowing the switch to be activated when inlet pressure is greater than outlet pressure. A spring preferably biases the valve in the second direction, such that inlet pressure must be greater than outlet pressure by at least the spring constant to allow switch activation.

Abstract: A torque converter coupled to a transmission has a torque converter operating mode and a lockup operating mode. A first pump may be configured to supply transmission fluid to a plurality of electro-hydraulic transmission components. A second pump may be configured to supply transmission fluid to a lubrication system of the transmission. A valve may be configured to route transmission fluid supplied by the second pump through the torque converter during the torque converter operating mode. Means may also be provided for selectively routing at least some of the transmission fluid supplied by the first pump through the torque converter. Illustratively, transmission fluid supplied by the first pump may, but need not, be routed to the torque converter only during the torque converter operating mode or only during the torque converter operating mode if the temperature of transmission fluid exiting the torque converter exceeds a threshold temperature.

Abstract: A hydrodynamic torque converter having a housing which may be connected or is connectable torque proof to a drive unit and which has a converter cover to which is fastened a hub in which, radially at the inside, an end of a transmission input shaft is arranged in a rotatable fashion and on which, radially at the outside, a piston of a converter bypass clutch is mounted in an axially movable and if appropriate rotatable fashion is provided. The hub may be caulked with the converter cover.

Abstract: A torque transmission device, in particular in the drive train of a motor vehicle, with a hydrodynamic torque converter (6), including a converter cover (14), which can be connected torque proof or is connected torque proof with a drive unit (3). The converter cover can be coupled with a turbine shell (21) through a pump shell (20), which can be bridged by a converter lockup clutch (30) that includes a piston (28) axially movable relative to the converter cover (14) within limits. The piston (28) is connected torque proof with a drive plate (50) in a first connection portion (51). The drive plate is connected torque proof with the converter cover (14) in a second connection portion (52), wherein an additional connection portion (53; 56) is provided, in which the drive plate (50) is connected torque proof with the converter cover (14).

Abstract: A hydrokinetic coupling device (10) which is intended in particular for a motor vehicle. The inventive device is characterized in that it consists of a damping element (20) comprising elements (100,110) for restricting the essentially-radial circulation of the fluid at least inside the front axial space (E1) which is located between a front guide washer (28) and a web (29), such that the fluid circulates through the lockup clutch (16) of the device (10).

Abstract: A hydraulic control apparatus for an automatic transmission comprises a linear solenoid valve for outputting a control pressure, a primary regulator valve for regulating a line pressure in accordance with the control pressure, and a secondary regulator valve for regulating a secondary pressure in accordance with the control pressure, the secondary pressure being supplied to a lock-up clutch and a torque converter. A spool of the secondary regulator valve is formed to comprise a large diameter portion and a small diameter portion, thereby eliminating the need for components such as a sleeve, and the line pressure can be input into an oil chamber formed between the large diameter portion and small diameter portion.

Abstract: A torque converter, including: a washer for a thrust bearing, the washer including a first circumferential surface facing radially outward; a stator hub with a second circumferential surface facing radially inward and free of an interlocking engagement with the first circumferential surface; and a shell for a turbine, the shell including a third circumferential surface facing radially inward. The washer is radially inwardly retained by contact between the first circumferential surface and the second or third circumferential surface. In a preferred embodiment, the washer is radially centered by contact between the first circumferential surface and the second or third circumferential surface. In another preferred embodiment, the hub includes at least one radially inwardly extending protrusion and the washer is retainable in an axial direction by the at least one protrusion.

Abstract: A hybrid GENERAL MOTORS 4L80E torque converter and a method of converting a GENERAL MOTORS 4T40E torque converter core into the present hybrid GENERAL MOTORS 4L80E torque converter for high performance applications. The present invention includes GENERAL MOTORS 4L80E compatible parts, which are provided in a race kit format to complete the conversion. The present kit includes a hybrid impeller hub, a hybrid turbine hub, a hybrid one-way roller clutch, a hybrid front cover pilot, an adapter ring, a thrust washer, and a set of machine screws. In a method of the present invention the GENERAL MOTORS 4T40E torque converter core undergoes multiple machining operations to remove the original equipment impeller hub, turbine hub, and front cover pilot from the GENERAL MOTORS 4T40E torque converter core, which are each replaced by their counterparts in the present race kit to complete the conversion to the hybrid GENERAL MOTORS 4L80E torque converter.

Abstract: The lock-up device includes a piston, an output rotary member, a plurality of elastic members, a support member, and a retaining plate. The piston is supported rotatably with respect to the input rotary member and movably in the axial direction. The elastic members elastically link the piston and the output rotary member in the rotational direction. The support member has an outer peripheral support component to support the outer peripheral side of the elastic members. The retaining plate has a fixed component that is fixed to the piston, and a radial support component that supports the outer peripheral support component in the radial direction.

Abstract: A one-way clutch, including: a first annular element; a second annular element arranged to lockingly engage with the first element for relative rotation of the second element, with respect to the first annular element, in a first rotational direction; a third annular element at least partly rotatable about the axis and axially disposed between the first and second elements; and a fourth annular element at least partly rotatable about the axis and including a radially disposed body and an axial protrusion extending from the body and connected to the third element. The axial protrusion forms a portion of a space arranged to at least partially enclose fluid to dampen energy associated with the locking engagement of the first and second annular elements, and the first or second element is axially disposed between the third and fourth elements.

Abstract: A clutch arrangement includes a clutch device for transmitting torque between a clutch housing and a takeoff, wherein a pressure element and an opposing pressure element cooperate to establish and release a working connection between at least one drive-side clutch element and at least one takeoff side clutch element. The opposing pressure element is mounted nonrotatably and without freedom of axial movement on the clutch housing, and is connected to at least one drive-side clutch element by axially acting energy storage devices. A takeoff-side clutch element is located between a drive-side clutch element and the opposing pressure element, and between any adjacent drive-side clutch elements. Alternatively, the axially acting energy storage devices can connect the drive-side clutch elements to the clutch housing.

Abstract: An impeller, for example, a guide wheel for a hydrodynamic speed variator/torque converter, including a plurality of blades. Each blade has a blade base and a blade tip area. Stiffening means are situated in at least one of the blades in at least the blade base area and/or the blade tip area.

Abstract: The invention relates to a torsional vibration damper (10) and a hydrodynamic torque converter device (1). Said device has a converter torus (18) which is configured by an impeller (12), a turbine wheel (14) and a stator (16), and a converter lockup clutch (20). The torsional vibration damper (10) has at least one first energy accumulating device (28) with one or more first energy accumulators (68) (e.g. coil spring or bow spring), at least one first wall (92) radially supporting the at least one first energy accumulator (68). The invention is characterized in that a rolling body device (98) (e.g. a rolling gear) is interposed between the at least one first wall (92) and the at least first energy accumulator (68) (e.g. coil spring or bow spring).

Abstract: A torque converter having a transverse axis of rotation, a cover having an inner diameter and an inner annular surface, an impeller shell having an inner diameter and an inner annular surface, and an annular backing plate having an outer diameter and an outer annular surface, wherein the cover, impeller shell, and backing plate are operatively arranged to rotate about the axis of rotation, wherein the backing plate is substantially orthogonal with respect to the axis of rotation, wherein the inner diameter of the cover is substantially equal to the inner diameter of the impeller shell, and wherein the inner annular surface of the cover and the inner annular surface of the impeller shell are fixedly attached to the outer annular surface of the backing plate.

Abstract: A piston plate anti-rotate mechanism in a closed piston, three passage torque converter including a cover having an inner radial surface, a drive plate comprising an annular plate, a piston plate having an axial inner crown, a front annular edge, an axial skirt, and a back annular edge, wherein the cover, drive plate, and piston plate are operatively arranged to rotate about a transverse axis of rotation, and wherein the piston plate is attached to the cover or the drive plate such that the piston plate is axially moveable and rotationally immovable relative to the cover. In some embodiment, the present invention further includes a leaf spring attaching the piston plate to the cover or the drive plate, such that the piston plate is axially moveable and rotationally immovable relative to the cover.

Abstract: A power transmission mechanism for transmitting power between a driving engine and an output drive, including: an input and an output; a hydrodynamic component with a pump wheel and a turbine wheel; an apparatus for at least partially bridging over the hydrodynamic component, the apparatus including a control device with a piston element that is chargeable with pressurizing agent; and means for influencing the difference in speeds of rotation of moving fluids on both sides of the piston element, the means including an influencing element that is rotatable in rotational synchronicity with the piston element, which extends outward in the radial direction free of any direct connection with the piston element, and which is situated in the radial direction at least in the range of the outside diameter, forming at least part of an axial space with the piston element.

Abstract: The invention relates to a hydrokinetic coupling device (10) characterized by the fact that the web (74) comprises, at the inner radial end thereof, a collar (86), which axially extends toward the front between the turbine wheel (32) and the turbine hub (40) and which is rotationally joined by friction welding respectively: at the front, to the turbine wheel (32) by a first weld joint (88) provided between a front annular contact face (90) of the collar (86) and a rear welding face (92) opposite the inner radial periphery of the turbine wheel (32) and; at the rear, to the turbine hub (40) by a second rear weld joint (96) provided between a rear annular contact face (98) of the collar (86) and a front welding face (100) opposite the outer radial periphery of the turbine hub (40).

Abstract: A torque converter including a cover, the cover having an axis and having an axially extending flange about the axis, the flange defining an aperture, a pilot fitted within the aperture, and a turbine hub connected to the flange.

Abstract: A power transmission device for configuration in a drive train between a prime mover and a power take-off with a hub element forming an output and a damper configuration connected upstream of the output, including at least two dampers disposed in radial direction offset relative to one another and coupled with one another—a first damper forming a main damper stage and a second internal damper—wherein the second internal damper is coupled with the hub. The dampers forming individual damper stages can be preassembled respectively as a unit and are connected with one another via a coupling.

Abstract: A torque converter including a lock up clutch, the lock up clutch including a piston and a clutch plate, a spring, and a connector plate, the connector plate connecting to the clutch plate at a connection and drivingly engaged with the spring at a spring engagement, the connection to the clutch plate being radially outside of the spring engagement.

Abstract: A system for controlling hydraulic fluid supplied to a torque converter of an transmission includes a torque converter including a chamber containing an impeller and a turbine, and a bypass clutch having a variable torque capacity, a source of variable control pressure, a latch valve changes in response to the variable control pressure alternately between an unlatched state, wherein the latch valve produces a low pressure output, and a latched state, wherein the latch valve produces a high pressure output, a first valve for limiting hydraulic pressure in the chamber alternately at two magnitudes of pressure in response to the low pressure output and the high pressure output, and a second valve responsive to the variable control pressure for regulating a magnitude of hydraulic pressure that actuates the bypass clutch and changes the torque capacity of the clutch.

Abstract: In sliding engagement of a clutch plate of a lock-up clutch with a front cover of a converter housing, with a difference in rotational speed therebetween, the sum of the urging force of a coil spring and the force of a lock-up discharge hydraulic pressure in a front side chamber is greater than the force of a lock-up engagement pressure in a rear side chamber. A selector valve member, accommodated in a valve chamber of a displacement selector mechanism, therefore, brings an oil chamber between the clutch plate (first piston) and a second piston into communication with the front side chamber. The hydraulic pressure of the rear side chamber received by a rear face of the piston is higher than hydraulic pressure of the oil chamber received by a front face of the piston and, therefore, the piston is displaced forwardly into frictional contact with the clutch plate and transmission of judder to an input shaft of a speed change mechanism is thereby reduced.

Abstract: The invention relates to a hydrodynamic torque converter device for an automotive drive train, comprising a torsional vibration damper, a converter torus which is configured by an impeller, a turbine wheel and a stator, and a converter lockup clutch. The torsional vibration damper has a first energy accumulating device with one ore more first energy accumulators, and a second energy accumulating device with one ore more second energy accumulators. The converter lockup clutch, the first energy accumulating device and the second energy accumulating device are connected in series. At least one intermediate part is interposed between the first and the second energy accumulating device and is connected to the two energy accumulating devices in series.

Abstract: In a hydrodynamic torque converter having a turbine shell and a torsion damper spring carrier jointly mounted to a carrier part by way of rivets extending through aligned openings in the turbine shell and the spring carrier, rivets with rivet shanks and a rivet heads are inserted through the aligned openings and welded to the carrier part by pairs of electrodes by which the rivets are pressed into contact with the carrier part while a welding current is generated from one to the other of the pair of welding electrodes through the respective rivets and the carrier part.

Abstract: A torque converter including a housing, a lock-up clutch, the lock-up clutch having a split piston having a radial inner portion and a radial outer portion, and a drive plate connecting the housing and the outer portion.

Abstract: The invention relates to a multi-plate clutch (2) having a first plate carrier (48) and second plate carrier (50) and one or more first plates (52) received by the first plate carrier and one or more second plates (54) received by the second plate carrier. The clutch also comprises a pressure element (58) which can especially be actuated hydraulically for generating an axial load on the clutch pack configured by the first and second plates and closing the multi-plate clutch, said pressure element configuring the second plate carrier and/or being connected to the second plate carrier in a rotationally fixed manner. The invention also relates to a hydrodynamic torque converter device having said multi-plate clutch.

Abstract: A multi-function torque converter, including a pump clutch, and a resilient element arranged to close the pump clutch during operation of the torque converter in a torque converter mode. In one embodiment, the resilient element is arranged to close the pump clutch during operation of the torque converter in lock-up mode. In one embodiment, the torque converter includes a torque converter clutch. In one embodiment, the pump clutch and the torque converter clutch are closed during operation of the torque converter in a lock-up mode.

Abstract: A power transmission mechanism including at least one hydrodynamic component and a device for at least partially bridging over the transmission of power through the hydrodynamic component by means of a control device, having an actuating mechanism that can be charged by way of a chamber that is chargeable with a pressurizing agent, and at least one spring unit is interposed between the actuating mechanism and the device for at least partially bridging over the hydrodynamic component.

Abstract: A torque converter having a first damper stage, a second damper stage, a floating flange torsionally connecting the first and second damper stages, an inertia element, and a tuned torsion damper. The torsion damper connects the inertia element and the flange. In a preferred embodiment, the inertia element is a turbine. In one embodiment, the first damper stage is a radially outer damper stage and the second damper stage is a radially inner damper stage. In another embodiment, the torsion damper generates a friction torque when rotated.

Abstract: The invention relates to a hydrodynamic torque converter device for an automotive drive train, comprising a torsional vibration damper and a converter torus which is configured by an impeller, a turbine wheel and a stator. The torsional vibration damper has a first energy accumulating device with one ore more first energy accumulators, and a second energy accumulating device with one ore more second energy accumulators, which is connected in series to the first energy accumulating device.

Abstract: The invention relates to a hydrodynamic torque converter device (1) which comprises a torsional vibration damper (10), a converter torus (12) configured by an impeller (20), a turbine wheel (24) and a stator (22), and a converter lockup clutch (14), said torsional vibration damper (10) having two energy accumulating devices (38, 40). The invention is characterized in that the first energy accumulating device (38) is bridged at high torque loads. The bridging is effected by reaching a maximum first relative angle of twist, e.g. by the action of bow springs as the first energy accumulating device (38) locking up, thereby providing a good insulation of torsional vibrations both in the part-load range and due to the bridging by the first energy accumulating device (38) at higher torque loads.

Abstract: A hydrokinetic coupling device (10), which comprises a axis of rotation (B) and a torque converter (12), comprising a turbine wheel (22) mounted rotationally around a rotary driven shaft, as well as a circumferential damping device (40), comprising a damper plate (42) with a radial flange (44), rotationally linked without play to the turbine wheel (22) by a connecting element (62) and which is linked with circumferential damping with the rotary driven shaft. A locking clutch (14) that comprises at least one annular friction disc (56A, 56B) sliding axially, which rotates together with the flange (44) of the damper plate (42). The friction disc (56A, 56B) is carried by the connecting element (62), which directly connects the turbine wheel (22) to the flange (44) of the damper plate (42).

Abstract: A lockup device 5 of a torque converter 1 has a piston 51, a first plate 61, a second plate 62, a intermediate plate 63, a plurality of first springs 64, and a plurality of second springs 65. The intermediate plate 63 is provided so as to be able to rotate with respect to the piston 51 within a specific angular range. The second springs 65 are disposed more to the outside in the radial direction than the first springs 64 so as to act in series with the first springs 64 via the intermediate plate 63, and are supported by the intermediate plate 63 so as to be elastically deformable in the rotation direction. The driven plate 68 has prongs 68a that can come into contact with the ends of the second springs 65, and is fixed to the outer peripheral part of the turbine 4.

Abstract: The invention relates to a torque transmission device, in particular in the power train of a motor vehicle, having a hydrodynamic torque converter that comprises a converter cover connectable or rather connected with a drive unit that is connectable via an impeller with a turbine wheel, which can be bypassed by means of a torque converter clutch, which comprises a piston, which relative to the converter cover is displaceable axially restrictedly. The invention is characterized in that pins are fixed on the piston; said pins extend in the axial direction and serve for splined connection of piston with the converter cover.

Abstract: The present invention is one or more torque converter clutch friction pad attached to a friction plate configured to more easily remove heat generated by the friction of a clutch engaging the friction plate. The invention resides in one or more circular grooves set into the friction surface of the friction pad and connected to a plurality of radial grooves. One or more boats or protrusions functionally attached to the clutch pressure plate and/or the torque converter housing fits into the circular groove. When the clutch is engaged, the boats rotate through the circumferential groove pulling oil from the rear radial groove into the circumferential groove and pushing oil into the forward radial groove. The heat generated in the friction plate is transferred to the oil in the circumferential groove and removed from the friction pad when the rotating boat pushes it into the forward radial groove.

Abstract: A torque transfer device in the drive train of a motor vehicle for transferring torque between a drive unit and a shaft rotatable about a rotation axis, including: a hydrodynamic torque converter, which includes a converter cover, connectable to the drive unit, and which can be coupled through a pump shell to a turbine shell for torque transfer, which can be bridged by a torque converter lockup clutch for torque transfer, which comprises a piston, movable in an axial direction within a range towards the cover in order to clamp a friction liner support with at least one friction liner between the piston and the cover for torque transfer. A friction ring is disposed between the piston and the friction liner support, and the friction ring is movable in an axial direction within a range between the piston and the friction liner support and connected to the converter cover.

Abstract: A hydrodynamic torque converter with a driving pump wheel and a drive turbine wheel that is placed in a housing in such a way that it can rotate is fixed to the drive shaft of a drive unit, and is connected to the housing with a converter bridging coupling that has a piston which remains fixed, with the help of a coupling spring mechanism, but which can be rotated in an axial direction.