An oil passage structure, includes a first tubular member configured to externally fit on a support wall portion and a second tubular member configured to internally fit in the support wall portion and supports an outer periphery of the shaft. An oil passage along a rotation axis direction of the shaft is provided at at least one of a location between the support wall portion and the first tubular member and a location between the support wall portion and the second tubular member.

A torque converter, including: a cover arranged to receive torque and supported for rotation around an axis of rotation; an impeller; a turbine in fluid communication with the impeller; a stator including a stator blade axially disposed between the turbine and the impeller; a vibration damper including a cover plate, an output flange arranged to non-rotatably connect to an input shaft of a transmission, and a spring engaged with the cover plate and the output flange; a hub non-rotatably connected to the cover; a lock-up clutch including a piston plate; and a first washer directly connected to the output flange, axially disposed between the hub and the output flange, and separated, in an axial direction parallel to the axis of rotation, from the hub by a first gap. A straight line, parallel to the axis of rotation, passes through, in sequence, the output flange, the first washer, and the hub.

A torque converter assembly is disclosed herein. The torque converter assembly includes a thrust washer having a radially inner surface configured to engage against a drive shaft. A first axial surface of the thrust washer is configured to contact a cover. A second axial surface of the thrust washer is configured to contact a damper flange. The second axial surface of the thrust washer partially defines a first flow path. The thrust washer further comprises a second flow path configured to direct fluid in a first direction and a third flow path configured to direct fluid in a second direction. The thrust washer disclosed herein both provides an axial thrust bearing feature, and also provides three distinct flow paths or passages.

A damper of a torque converter for a vehicle may include a front cover, an impeller rotatably coupled to the front cover, a turbine disposed facing the impeller, a reactor disposed between the impeller and the turbine for changing flow of oil transferred from the turbine toward the impeller, a driving disk assembled to a driving hub connected to the front cover, a driven hub to which a driven disk is assembled, a turbine shell connected to a turbine hub transferring torque to a transmission, and a driven plate connected to the turbine shell.

A power transmission device includes a torque converter device, a first hydraulic pump, a first oil channel, a second oil channel, a third oil channel, a second pressure control valve, and a controller. The torque converter device has a torque converter and a lock-up clutch. The first oil channel supplies hydraulic fluid from the first hydraulic pump to the torque converter. The second oil channel drains hydraulic fluid from the torque converter. The third oil channel communicates with the first oil channel and the second oil channel. The second pressure control valve is disposed in the third oil channel. The controller sets the second pressure control valve to an open state when the lock-up clutch is in an engaged state.

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.

An arrangement of at least one sensor track-scanning rotor position sensor (1, 1 A) of an electric machine (EM) in a hybrid transmission housing (2) that includes a torque converter (3) and a housing-affixed oil supply plate arrangement is provided. The rotor position sensor (1, 1 A) is attached on an oil-supply-plate side, and a sensor ring (8), as a sensor track, is attached on a converter side. A hybrid transmission housing (2) including the arrangement is also provided.

The present invention relates to a lock-up clutch of a torque converter. A cover (10) is separated to a pilot (48) and includes an opening (10-1) for installing the pilot (48). Before assembling a clutch driving portion such as a piston, a separator, drive plates, a seal ring, and driven plates, to the pilot (48), rivets (53) are press-fitted into the pilot (48), the cover (10) is abutted to respective head portions of the rivets (53), and the pilot (48) is installed in the cover (10) and is fixed to the cover (10) by welding. Thereafter, the piston, the drive plates and the driven plates are disposed between the separator and the cover (10), the seal ring is contact with the separator, the separator is press-fitted into projection ends of the rivets (53), and then projection portions (53-2) of the rivets (53) are crimped.

A flow channel structure forms a first flow channel which makes a first fluid chamber and a second fluid chamber communicate with each other therethrough. The flow channel structure includes first to third plates. The first plate includes a first through hole penetrating the first plate in a thickness direction to open to the first fluid chamber. The second plate includes a second through hole penetrating the second plate in the thickness direction to open to the second fluid chamber. The third plate includes a first connecting through hole penetrating the third plate in the thickness direction. The first connecting through hole is larger in flow channel area than each of the first and second through holes. The first and second through holes are disposed in different positions from each other as seen in the thickness direction. The first connecting through hole communicates with the first and second through holes.

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.