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.

A torque converter, including: a cover arranged to receive torque; an impeller; a turbine; a stator; and a lock-up clutch including a piston plate, a first plate, a second plate axially disposed between the cover and the first plate, and a rivet non-rotatably connecting the first plate to the second plate, the rivet being a component distinct from the first plate and the second plate. The cover and the piston plate define at least a portion of a first pressure chamber. The first plate and the second plate define at least a portion of a second pressure chamber. The first pressure chamber and the second pressure chamber are arranged to receive and expel a fluid to axially displace the piston plate to open and close the lock-up clutch.

A torque converter includes a pump shell having pump blades; a turbine shell having a support portion supporting turbine blades, wherein the turbine blades are driven by the pump blades via a fluid to rotate about a rotational axis. The turbine shell further has a flange portion extending outward at the radially outside of the support portion and is integrally formed with the support portion. The torque converter further comprises a vibration damping device, the mass of which is mounted on the flange portion and configured to be movable relative to the flange portion and apply a torque to the turbine shell, thereby damping the torque vibration on the turbine shell. In addition, the invention also discloses a vehicle comprising the torque converter.

A torque converter includes a front cover arranged to receive a torque and an impeller having an impeller shell connected to the front cover. The torque converter further includes a turbine in fluid communication with the impeller and including a turbine shell. The torque converter further includes a lock-up clutch including a clutch plate that is non-rotatably connected to the turbine shell.

A torque converter includes a front cover arranged to receive a torque and a damper assembly including an output flange arranged to non-rotatably connect to a transmission input shaft. The torque converter further includes a seal plate disposed between the front cover and the output flange. The seal plate is non-rotatably connected to the cover. The torque converter further includes a thrust washer including a body axially disposed between the seal plate and the output flange. The thrust washer is fixed to the seal plate.

A torque fluctuation inhibiting device is disclosed. The torque fluctuation inhibiting device includes an input member, an elastic member, a mass body and a centrifugal element. The input member includes a pair of input plates disposed in axial alignment. The input member is disposed to be rotatable. The elastic member is held by the pair of input plates. The mass body is disposed to be rotated with the input member and be rotatable relative to the input member. The centrifugal element is disposed to be radially movable by a centrifugal force acting thereon in rotation of the input member. The centrifugal element is disposed between the pair of input plates.

A damper device including an input element and an output element; an elastic body transmitting torque between the input element and the output element; and a rotary inertia mass damper having a mass body. The rotary inertia mass damper includes a sun gear, a carrier rotatably supporting pinion gears, and a ring gear that meshes with the pinion gears and serving as the mass body. A pair of washers is located on both sides of each pinion gear axially. The ring gear includes an annulus gear having internal teeth meshing with the pinion gears and a weight body fixed to the annulus gear such that the weight body is in contact with a side surface of the annulus gear. An inner circumferential surface of the weight body is supported in a radial direction by a tip of the pinion gear or an outer circumferential surface of the washer.

The present invention relates to a lock-up device for a torque converter which has a simple structure compared to the prior art, which reduces manufacturing costs, and which may reduce a size of the entire torque converter and improve a damping ability of the dynamic damper by minimizing an installation space of a dynamic damper.

A torsional-vibration-reducing-device manufacturing method includes: molding an input rotating member and an output rotating member through punching press machining and bending press machining performed on plate materials; performing heat treatment on the molded input rotating member and the molded output rotating member; and assembling a damper product that includes, as components, the input rotating member and the output rotating member on which heat treatment has been performed, and a coil spring. The molding includes drilling processing for forming a hole opened in an outer-diameter direction with respect to the center line of rotation, at a position of at least one rotating member of the input rotating member and the output rotating member, the position serving as a spring holding section for holding the coil spring. The method further include cleaning the damper product with a cleaning solution and removing the cleaning solution remaining after the cleaning.

The invention relates to a torsional vibration damper, in particular a dual-turbine damper, for a drivetrain of a motor vehicle, preferably for a drivetrain of a motor vehicle having a hydrodynamic torque converter, having a first damper and a second damper connected to the latter in series, where the two dampers are situated essentially on a common circumference or essentially in a common plane of the torsional vibration damper, there being a damper intermediate mass connected between the two dampers connected in series, and a centrifugal pendulum device provided on the damper intermediate mass.