A hydrodynamic torque converter and a torsional vibration damper for same, having a pump wheel connected on the drive side and a turbine wheel driven thereby, wherein a torsional vibration damper and an output part are provided between a housing of the hydrodynamic torque converter and an output hub. The torsional vibration damper having an input part that can be connected to the housing by a converter lock-up clutch, and said output part being connected to the output hub, wherein an intermediate flange arranged in each case counter to a spring device effective in the circumferential direction is provided between the input part and the output part. In order to protect the spring devices against damage in a manner not affecting the installation space, an angle of rotation of the intermediate flange counter to the effect of the spring devices is limited radially inside the spring devices.

The present invention discloses a clutch with torque converter clearance that prevents internal interference with the components of the torsional vibration filtering device, and also allows an easy and quick evaluation of the clutch clearance around 360° of the piston when the clutch is engaged. To achieve the above, a normally coupled clutch with torque converter clearance comprising a piston cap; at least one friction disc; and a piston is implemented; the piston in turn comprises a pressure plate and a cover core, where the cover core comprises a mechanical stop or retainer as main element.

A torsional vibration reduction apparatus has coil springs. The coil springs are received in paired input member side coil spring receiving portions and an output member side coil spring receiving portion. The paired input member side coil spring receiving portions comprise forward rotation side and reverse rotation side guide portions between forward rotation side and reverse rotation side spring pedestals. The output member side coil spring receiving portion comprises forward rotation side and reverse rotation side guide portions between forward rotation side and reverse rotation side spring pedestals. In forward rotation and reverse rotation, since the displacement of the coil springs under the centrifugal force is received by the guide portions and the vertical component force of the elastic force is small, sliding resistance is suppressed, the hysteresis torque is reduced, additive components are not required, and the installation positions of the coil springs cannot be restricted.

A torque converter, including: a cover arranged to receive torque; a pump including a pump shell connected to the cover, and pump blades; a turbine in fluid communication with the pump and including a turbine shell and turbine blades; a stator including stator blades disposed between the turbine and the pump; a pump hub non-rotatably connected to the pump shell and including a first planar surface facing radially outward with respect to an axis of rotation; and a resolver rotor non-rotatably connected to the pump hub and including a second planar surface in contact with the first planar surface and facing radially inward with respect to the axis of rotation. The pump hub includes a protrusion extending radially outward from the first planar surface and in contact with the resolver rotor. The resolver rotor is arranged to determine a rotational position of the torque converter around the axis of rotation.

A torque converter including: a cover arranged to receive torque; an impeller; a turbine in fluid communication with the impeller; a stator assembly; a lock-up clutch including an axially displaceable piston plate; a vibration damper including an output flange, a retainer plate, and a spring directly engaged with the output flange and retainer plate; a first combination component having a first single unified structure including a first section forming a pilot hub located radially inward of the cover and non-rotatably connected to the cover, and a second section forming a seal plate of the lock-up clutch; and a second combination component having a second single unified structure including a third section forming a shell of the turbine, and a fourth section forming a cover plate of the vibration damper, the fourth section directly engaged with the spring and non-rotatably connected to the retainer plate.

A torque converter includes a front cover arranged to receive a torque and an impeller having an impeller shell non-rotatably connected to the front cover. A turbine is fluidly coupled to the impeller and includes a turbine shell. A lock-up clutch is provided that includes a piston configured to axially displace to engage and disengage the lock-up clutch; a first clutch plate and a second clutch plate connected to each other, the first and second clutch plates being disposed between the piston and front cover; and a flexible clutch plate disposed axially between the first and the second clutch plates and connected to the piston.

A hydrodynamic torque converter is provided with a converter housing and a converter torus with a pump impeller, a turbine wheel which is driven hydrodynamically by the pump impeller by a converter fluid. In order to bridge the hydrodynamic drive, a converter lock-up clutch which is connected between the pump impeller and the turbine wheel by pressure loading of the converter fluid is arranged radially between an outer circumference of the converter housing and the converter torus. In order to provide the converter lock-up clutch with an increased transmission capacity, the turbine wheel is assigned at least one friction disc which can be prestressed axially between a pressure-loaded annular piston, which is hooked in an axially movable manner into the converter housing, and a mating friction surface of a converter housing section radially outside the converter torus.

Torque converter arrangements and operating methods are provided herein. In one example, the torque converter includes a first attachment interface designed to rotationally couple to a prime mover and a second attachment interface designed to rotationally couple to a transmission. The torque converter further includes a lock-up clutch with an engagement spring embedded in an actuation piston, a plurality of separator plates supported by one or more guiding pins that extend through the plurality of separator plates and into a casing, and a plurality of friction plates interleaved with the plurality of separator plates, where the plurality of separator plates and friction plates are axially captured between the actuation piston and an end plate.

A hydrodynamic torque converter (1) with a lock-up clutch (6) in a clutch space, (9) and with a piston (7) for activating of the lock-up clutch (6). The piston (7) separates the clutch space (9) from a piston chamber (10). The piston (7), via the application of pressure, can be moved, from a starting position in which the lock-up clutch (6) is disengaged, in the engaging direction of the lock-up clutch (6). The piston (7) has at least a closable opening (11) through which hydraulic fluid can flow from the piston chamber (10) into the clutch space (9). The opening (11) is open if either the piston (7) is away from the starting position and/or if a fluid pressure in the piston chamber (10), compared to the clutch space (9), is elevated. The closing element (12, 13) is tongue-shaped element which serves closing and opening of the opening (11).

A torsional vibration damper having improved vibration damping performance. The torsional vibration damper comprising: a pendulum vibration damper that damps pulsation of engine torque by an oscillating motion of an inertia body in response to the pulsation of the torque; and an engagement device that damps the amplitude of the pulsation of the engine torque by a relative rotation of rotary members. The pendulum vibration damper and the engagement device are arranged in order on a transmission route of the torque of the engine from a side at which the engine is disposed.