A centrifugal pendulum absorber for a torque converter is provided. The centrifugal pendulum absorber includes a center plate; a roller received in a roller slot formed in the center plate; and a first mass on a rear axial side of the center plate and a second mass on a front axial side of the center plate. The first and second masses are slidable with respect to the center plate along the slot roller. The first mass includes a first radially extending section and a first axial protrusion extending axially past a rear-side axial surface of the first radially extending section. The second mass includes a second radially extending section and a second axial protrusion extending axially past a front-side axial surface of the second radially extending section. A torque converter and a method of forming a centrifugal pendulum absorber are also provided.

A hydrodynamic coupling arrangement has a housing connected to pressure medium lines for conducting pressure medium into or out of a pressure space sealed by a piston of a clutch device relative to a toroidal space of a hydrodynamic circuit provided in the housing. A rotatable area is provided for axially displaceably receiving a radially inner piston hub of the piston of the clutch device, and at least one through-opening which is rotatable relative to the housing is provided in a through-opening area for producing at least one flow connection between at least one pressure medium line and the pressure space. The receiving area and the through-opening area are in rotational communication with a retarding device influencing a flow of pressure medium in the pressure space, this flow of pressure medium arriving in the pressure space after passing through the through-opening area.

A drive assembly for a torque converter is provided. The drive assembly includes a turbine; a damper assembly fixed to a first side of the turbine by connectors; and a hydrodynamic bearing fixed to a second side of the turbine opposite the first side. The hydrodynamic bearing includes at least one recess formed therein receiving ends of the connectors. A method of forming a drive assembly is also provided. The method includes fixing a damper assembly cover plate to a first side of a turbine via connectors; and fixing a hydrodynamic bearing to a second side of the turbine opposite the first side. The hydrodynamic bearing including at least one recess formed therein receiving an ends the connectors. A torque converter is also provided.

A drive assembly for a torque converter is provided. The drive assembly includes a turbine including a turbine shell and a plurality of turbine blades; and a spring retainer riveted to the turbine shell by at least one rivet. A torque converter for a motor vehicle drive train is also provided that includes the drive assembly and an impeller, with the turbine shell being axially slidable against the impeller to operate as a piston of a lock-up clutch of the torque converter. Further, a method of forming a drive assembly for a torque converter is provided that includes riveting a spring retainer to a turbine shell.

A damper assembly for a torque converter is provided. The damper assembly includes a spring retainer including an interior space configured for holding springs and a spring support plate fixed to the spring retainer to define an inlet gap between a first section of an outer circumference of the spring support plate and the spring retainer for insertion of one of the springs. The outer circumference of the spring support plate further includes a second section circumferentially offset from the first section. The second section is arranged and configured with respect to spring retainer for axially holding the plurality of springs in the interior space during operation of the damper assembly. A torque converter and a method of forming a damper assembly for a torque converter are also provided.

A lock-up device includes a clutch portion, an intermediate member, a driven plate, a damper portion and a dynamic damper device. The clutch portion is a portion into which a torque is inputted from a front cover. The intermediate member is a member into which the torque is inputted from the clutch portion. The driven plate is rotatable relatively to the intermediate member and is coupled to a turbine hub. The damper portion elastically couples the intermediate member and the driven plate in a rotational direction. The dynamic damper device is mounted to an outer peripheral part of the driven plate and attenuates fluctuation in a rotational speed.

A torque converter comprises a cover configured to receive an input torque and an impeller having an impeller shell non-rotatably connected to the cover. A piston is disposed axially between the cover and the impeller. The piston is configured to axially displace to selectively engage a clutch and a seal plate is disposed axially between the piston and the cover. The seal plate is sealed to the cover. A first chamber is formed at least in part by the cover, the seal plate, and the piston. A second chamber is formed at least in part by the piston and the impeller shell.

A hydrokinetic torque coupling device includes a casing having opposite sidewalls and an outer wall extending between and connecting the opposite sidewalls, an impeller coaxial aligned with the rotational axis, a piston engagement member extending substantially radially inward from and non-moveable relative to the outer wall of the casing, and a turbine-piston coaxially aligned with and hydrodynamically drivable by the impeller. The turbine-piston includes a turbine-piston shell having a turbine-piston flange with an engagement surface that is movable axially toward and away from an engagement surface of the piston engagement member to position the hydrokinetic torque coupling device into and out of a lockup mode in which the turbine-piston is mechanically locked to and non-rotatable relative to the piston engagement member.

A coupling arrangement is provided with a vibration reduction device and with a clutch device. The vibration reduction device has at least one torsional vibration damper, an input connected to a drive, and an output connected to the clutch device by which a connection between the vibration reduction device and a driven end is at least substantially produced in a first operating state, and this connection is at least substantially cancelled in a second operating state. The vibration reduction device has a mass damper system that cooperates with the torsional vibration damper and is connected to the output of the vibration reduction device.

A torsional vibration damper that damps torsional vibration effectively in a low-speed range. In the torsional vibration damper, a spring holder is formed by apertures of an input element and an output element, and an elastic member is held in the spring holder. A first moveable range of a planetary element extending from an initial position in a drive direction is wider than a second movable range of the planetary element extending from the initial position in a counter direction.