A torsional damper arrangement for a motor vehicle with a housing. The housing encloses a wet space. A momentum start clutch arrangement is arranged in the housing.

A clutch mechanism includes a control member. The control member is adapted to receive motive power and includes a first dry clutch member and a first viscous clutch member. The clutch mechanism further includes an output member that includes a second dry clutch member and a second viscous clutch member. The first and second dry clutch members form a dry clutch and the first and second viscous clutch members form a viscous clutch. The clutch mechanism further includes an actuation arm coupled to at least one of the control and output members. The actuation arm is selectively controllable to effect relative movement of the control and output members such that one of the dry and viscous clutches is selectively engaged.

A securing device for a rotatably mounted object with at least one receiving unit, which is fixed against rotation on a first component of the object with at least one clamping unit which is fixed against rotation to a second component of the object, which manually or by means of a rotary drive is moveable relative to the first component via a rotatably mounted joint about a rotational and/or swivel axis, and with at least one drive unit through which the clamping unit can be transferred from a release position, in which the first component and the second component are released for rotation relative to each other to a clamping position, in which the clamping unit frictionally and/or non-positively engages in the receiving unit, and the first component and the second component are fixed relative to each other against rotation about the rotary and/or swivel axis.

A torque converter comprising: a damper assembly including a spring retainer; and, a turbine assembly connected to the damper assembly, the turbine assembly including: a turbine shell including an axially movable turbine piston; a drive plate fixed to the turbine piston; and a diaphragm spring, the drive plate having openings for receiving the diaphragm spring; the diaphragm spring acting on the turbine piston with a preload force. In an example aspect, the diaphragm spring includes a plurality of radially inward tabs and the drive plate includes a plurality of openings for receiving the radially inward tabs.

A torque converter comprising: a damper assembly including a spring retainer; and, a turbine assembly connected to the damper assembly, the turbine assembly including: a turbine shell including an axially movable turbine piston; a drive plate fixed to the turbine piston; and a diaphragm spring, the drive plate having openings for receiving the diaphragm spring; the diaphragm spring acting on the turbine piston with a preload force. In an example aspect, the diaphragm spring includes a plurality of radially inward tabs and the drive plate includes a plurality of openings for receiving the radially inward tabs.

A friction surface clutch (10) for use in motor vehicles is provided. The friction surface clutch includes a first tapered element having a first friction surface and a second tapered element having a second friction surface, along with an actuating device having an actuating element for force-locked connection and disconnection of the tapered elements. The actuating device includes a pressure element coupled to the actuating element and a lever device interacting with the first tapered element. The first tapered element has a guide part in which the pressure element can be guided in a torsion-resistant way relative to the first tapered element prior to reaching a wear limit of the friction surfaces and can be engaged with the lever device to disconnect the force-locked connection. The pressure element can be detached from the guide part when the wear limit of the friction surfaces is reached.

A friction surface clutch (10) for use in motor vehicles is provided. The friction surface clutch includes a first tapered element having a first friction surface and a second tapered element having a second friction surface, along with an actuating device having an actuating element for force-locked connection and disconnection of the tapered elements. The actuating device includes a pressure element coupled to the actuating element and a lever device interacting with the first tapered element. The first tapered element has a guide part in which the pressure element can be guided in a torsion-resistant way relative to the first tapered element prior to reaching a wear limit of the friction surfaces and can be engaged with the lever device to disconnect the force-locked connection. The pressure element can be detached from the guide part when the wear limit of the friction surfaces is reached.

A torque converter, including: a cover arranged to receive torque; an impeller including an impeller shell non-rotatably connected to the cover and at least one impeller blade connected to the impeller shell; a turbine including a turbine shell and at least one turbine blade connected to the turbine shell; an output hub connected to the turbine shell and arranged to non-rotatably connect to an input shaft for a transmission; and a turbine clutch including a piston non-rotatably connected to the turbine shell, and for a lock-up mode, axially displaceable to non-rotatably connect the piston and the impeller shell.

A torque converter, including: a cover arranged to receive torque; an impeller including an impeller shell non-rotatably connected to the cover and at least one impeller blade connected to the impeller shell; a turbine including a turbine shell and at least one turbine blade connected to the turbine shell; an output hub connected to the turbine shell and arranged to non-rotatably connect to an input shaft for a transmission; and a turbine clutch including a piston non-rotatably connected to the turbine shell, and for a lock-up mode, axially displaceable to non-rotatably connect the piston and the impeller shell.

A shifting device for a motor vehicle transmission has a first coupling component, a second coupling component rotatable about a transmission axis (A), an inner friction ring which has a conical surface on a radially outer face, an outer friction ring which has a conical surface on a radially inner face, and an intermediate friction ring having a C-shaped ring cross section, including a friction cone connected to the second coupling component for joint rotation with and for axial displacement with respect to the second coupling component, while the inner friction ring and the outer friction ring are connected to the first coupling component for joint rotation with and for axial displacement with respect to the first coupling component. The friction cone extends between the conical surfaces of the inner friction ring and outer friction ring.