A clutch arrangement is provided with a mass damper system having a damper mass carrier and damper masses deflectable relative to the damper mass carrier. The clutch arrangement has a housing having at least two housing parts permanently connected to one another by a fixed connection, at least one housing parts has a cutout for at least one projection of the other housing part. The housing parts are assembled while receiving the damper mass carrier between an axial stop of the cutout of the one housing part and the projection of the other housing part. The housing parts are loaded over the course of producing the fixed connection by a clamping mechanism which acts on the housing parts in direction away from one another and operative axially between one of the housing parts and the damper mass carrier axially supported at the other respective housing part.

A lockup device (63) includes a lockup clutch (64) for establishing connection between a rotating body (44) of a torque converter (41) and a transmission shaft (55), a lockup control valve (70) that controls supply/discharge of pressurized oil from a hydraulic pump (69) to/from the lockup clutch (64), and a lockup oil passage (75) that introduces pressurized oil from the lockup control valve (70) to the lockup clutch (64). The lockup control valve (70) is arranged on an outer side face (18B) of an intermediate casing (18) in a position of radially overlapping the transmission shaft (55) in a radial direction of the transmission shaft (55). Further, a casing side oil passage (76) constituting the lockup oil passage (75) is formed as a linear oil passage that linearly extends in the radial direction of the transmission shaft (55) between the lockup control valve (70) and the transmission shaft side oil passage (77).

An output rotary member is coupled to a turbine and rotatable relatively to a clutch portion. First elastic members elastically and rotation-directionally couple the clutch portion and the output rotary member. A dynamic damper device is coupled to any of members forming a power transmission path from the clutch portion to the output rotary member and includes a damper plate having a plurality of circumferentially extending first openings and to be rotated together with the output rotary member. The dynamic damper device also includes inertia members disposed on both axial sides of the damper plate and rotatable relatively to the damper plate, each of the inertia members having circumferentially extending second openings located to oppose the first openings. The dynamic damper device further includes second elastic members accommodated in the first openings and the second openings, the second elastic members elastically coupling the damper plate and the inertia members.

A vehicle drive device that includes a rotary electric machine that serves as a driving force source for wheels; a first rotation member coupled to a rotor of the rotary electric machine; and a fluid coupling that is disposed on an axial first side, which is one side in an axial direction with respect to the rotary electric machine, and that has a rotation housing.

A hydraulic control system for an automatic transmission with a torque converter includes two regulator valves controlled by a single variable force solenoid (VFS). A bypass clutch regulator valve increases the pressure to a bypass clutch apply chamber as the VFS pressure increases. A converter charge regulator valve decreases the pressure in a converter charge circuit as the VFS pressure increases. The converter charge circuit is in series with a lubrication circuit. An orifice restricts the flow through these circuits such that they can be supplied from the line pressure circuit rather than a lower priority circuit. In one embodiment, an on/off solenoid opens a flow control valve to bypass the orifice when additional flow is required. In another embodiment, an electric pump supplements the flow in these circuits when required. This later embodiment includes a switch valve such that the electric pump also supports stop/start operation.

A torque converter includes a torque converter body and a lock-up device. The torque converter body includes an impeller, a turbine having a turbine shell, and a stator. The lock-up device directly transmits a torque from a front cover to the turbine, and includes a damper portion and a clutch portion to which the torque from the front cover is inputted. The damper portion includes an output-side member, a plurality of elastic members and a holder plate. The output-side member is coupled to the turbine shell. The plurality of elastic members elastically couple the clutch portion and the output-side member in a rotational direction. The holder plate is rotatable relatively to the output-side member, and holds the plurality of elastic members. The holder plate is supported at an inner peripheral end thereof by an outer peripheral surface of the turbine shell and positions the damper portion in a radial direction.

A torque converter turbine is provided. The torque converter turbine includes a plurality of blades, an annular bowl shaped blade supporting portion supporting the blades and a mass fixed to the blade supporting portion. A method of forming a torque converter turbine is also provided. The method includes providing a blade supporting portion of a turbine shell with mass and connecting a plurality of blades to the blade supporting portion.

A lock-up device includes a clutch part and a damper part. The clutch part is disposed between a front cover and a turbine, and transmits or blocks torque. The damper part transmits torque from the clutch part to the turbine, and absorbs torsional vibration. The damper part includes input and output members, elastic members, and a support member. The input member is connected to the clutch part. The output member is connected to the turbine. The elastic members connect the input and output members. The support member has a connecting part, a regulating part, and a stopper part. The regulating part is provided such that the output member is interposed axially between the regulating part and part of the input member. The stopper part is configured to contact the output member and prohibit the input and output members from rotating relative to each other by a predetermined angle or more.

A lock-up device includes a clutch part and a damper part. The clutch part is disposed between a front cover and a turbine. The clutch part transmits or blocks torque. The damper part transmits torque from the clutch part to the turbine, and absorbs torsional vibration. The damper part includes an input member, an output member, a plurality of elastic members, and a support member. The input member is connected to the clutch part. The output member is rotatable relative to the input member and is connected to the turbine. The elastic members are accommodated in the input member, and elastically connect the input member and the output member in a rotational direction. The support member has a connecting part and a plurality of support parts. The connecting part is connected to the input member. The plurality of support parts support inner peripheral surfaces of the plurality of elastic members.

A lock-up device includes a clutch part, a piston, a sleeve, and an oil chamber plate. The clutch part is disposed between a front cover and a turbine. The piston is axially movable, and brings the clutch part into a torque-transmission state. The sleeve is fixed to the inner peripheral part of the front cover. The sleeve has a piston support part and a first butt part. The piston support part supports an inner peripheral surface of the piston to be axially movable. The first butt part is formed on the outer peripheral surface of the piston support part. The oil chamber plate is provided between the piston and the turbine. The oil chamber plate has a second butt part. The second butt part is butt-welded with the first butt part. The oil chamber plate forms an oil chamber. Hydraulic fluid is supplied between the oil chamber and the piston.