| CPC F16H 45/02 (2013.01) [F16H 2045/021 (2013.01)] | 17 Claims |
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1. A torque converter, comprising:
a cover arranged to receive torque for rotation about an axis;
an impeller non-rotatably connected to the cover;
a lock-up clutch including a piston;
a turbine that includes a turbine shell and a turbine hub, the turbine hub comprising:
a first plate to which the turbine shell is non-rotatably connected;
a second plate axially adjacent to the first plate and non-rotatably connected thereto, the second plate defining a plurality of apertures that are circumferentially offset from each other; and
a third plate non-rotatably connected to the second plate and positioned axially adjacent thereto, such that the second plate is positioned axially between the first and third plates, the third plate defining a plurality of ports that are circumferentially offset from each other and are aligned with the corresponding plurality of apertures defined by the second plate;
a seal plate that is non-rotatably connected with the third plate;
an apply chamber bounded at least in part by the piston; and
a release chamber bounded at least in part by the seal plate and the piston;
wherein, in a lock-up mode of the torque converter, in which the piston is non-rotatably connected to the cover, pressurized fluid is arranged to flow along a first flow path between the second and third plates and into the apply chamber to apply a force to the piston in a first axial direction; and
wherein, in a torque converter mode of the torque converter, in which the cover is rotatable with respect to the piston, pressurized fluid is arranged to flow along a second flow path between the first and second plates, into the plurality of apertures defined by the second plate, into the corresponding plurality of ports defined by the third plate, and into the release chamber to apply a force to the piston in a second axial direction opposite the first axial direction to disconnect the piston from the cover.
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