A rotary device includes a first rotor and a second rotor. The first rotor includes a first support surface. The first rotor is disposed to be rotatable. The second rotor includes a second support surface radially facing the first support surface to be supported by the first support surface. The second rotor is disposed axially apart from the first rotor. The second rotor is disposed to be rotatable with the first rotor and be rotatable relative to the first rotor.

A rotary device includes a first rotor and a second rotor. The first rotor is disposed to be rotatable. The second rotor is disposed to be rotatable with the first rotor and be rotatable relative to the first rotor. The second rotor includes first and second plates. The first and second plates are configured to form an accommodation space accommodating an outer peripheral portion of the first rotor.

A fluid coupling includes a cover, an impeller, a turbine, an output hub, a lock-up piston, and a wall member. The impeller is fixed to the cover. The turbine is disposed opposite to the impeller. The output hub outputs a torque transmitted thereto from the turbine. The lock-up piston is disposed between the cover and the turbine. The lock-up piston is disposed to be axially slidable on the output hub. The lock-up piston is configured to be engaged by friction with the cover. The wall member is attached to the output hub. The wall member defines a hydraulic chamber in cooperation with the lock-up piston.

A torque converter is configured to connect with an electric machine via a connecting assembly. The torque converter includes a front cover facing the electric machine. The connecting assembly is non-rotatably fixed to the front cover to be coaxial with a rotor shaft of the electric machine. The connecting assembly defines axially extending teeth configured to engage the electric machine.

A torque converter comprising a front cover, an impeller having an impeller shell connected to the front cover, a turbine having a turbine shell and at least one blade attached thereto, and a lock-up clutch configured to selectively couple the turbine shell to the impeller shell for torque transmission therebetween is provided. In embodiments, the lock-up clutch comprises a clutch plate connected to the turbine shell and extending radially outward therefrom. The clutch plate may include a first end, a second end, and a slot defined between the first and the second ends. The lock-up clutch further may include a piston connected to the front cover, and a piston actuation plate connected to the piston, wherein the piston is configured to actuate the piston actuation plate to close the lock-up clutch to connect the turbine shell to the impeller shell.

A tilger for a rotating body includes an annular body movably coupled to a rotatable portion of the rotating body. The tilger includes a spring interposed between the first annular body and the rotatable portion. Rotation of the rotatable portion relative to the annular body is to compress and decompress the spring. The tilger includes a ring positioned on an outer surface of the annular body and configured to expand as a rotational speed of the ring increases to decrease a total inertia of the annular body and the ring applied to the spring.

A launch device for coupling a rotary output of a prime mover to a rotary input of a transmission. The launch device includes a front cover connected to the rotary output member of the prime mover and an output hub connected to the rotary input of the transmission. A rear cover cooperates with the front cover to define a chamber in which an impeller and a turbine are located. A damper is coupled between the turbine and the output hub and a lock-out clutch is coupled to the damper to releasably lock the damper for rotation with one of the front and rear covers. Connecting the clutch assembly to the damper is a clutch plate in which a clutch drum of the clutch assembly is unitarily formed with the input members of the damper.

A torque converter includes a front cover, an impeller, a turbine, and a stator. The impeller forms a fluid chamber together with the front cover. The stator is disposed between an inner peripheral part of the impeller and an inner peripheral part of the turbine. The stator regulates a flow of a fluid flowing from the turbine to the impeller. A flattening ratio is 0.5 or less. The flattening ratio is herein defined as a first ratio of an axial dimension to a radial dimension of a torus formed by the impeller, the turbine, and the stator. A flow area ratio is 0.14 or greater and 0.16 or less. The flow area ratio is herein defined as a second ratio of a minimum flow area of the impeller and the turbine to an area of an imaginary circle having the outer diameter of the torus as the diameter thereof.

A torque converter comprises a front cover, an impeller having an impeller shell fixed to the front cover, and a turbine fluidly coupled with the impeller and having a turbine shell. A damper assembly is provided that includes an output flange connected to the turbine shell. A clutch assembly is disposed between the front cover and the turbine. The clutch assembly comprises a piston sealed to the front cover at an outer diameter thereof and a clutch flow deflector plate disposed axially between the piston and the output flange, wherein the clutch flow deflector plate is configured to direct a cooling fluid to the clutch assembly.

An automatic transmission comprising a control valve body adapted to control oil flow within the transmission, a torque converter having a torque converter clutch operable in one of an open and an applied condition, a first control circuit between the control valve body and the torque converter and a second control circuit between the control valve body and the torque converter, a first oil path that provides a fluid connection between the first control circuit and the torque converter, a second oil path that provides a fluid connection between the second control circuit and the torque converter, a third oil path that provides a fluid connection between the second control circuit and the torque converter clutch, and an orifice that provides a fluid connection between the second control circuit and the torque converter.