An example includes a hydraulically controllable coupling to couple a rotating input and to an output to rotate, or to decouple the input and the output, with coupling and decoupling modes selected by switching a hydraulic device such as a vane pump between a pumping mode and a mode in which it does not pump. In an example, the system cooperates with a transmission to increase the number of possible gear ratios in some examples.

An example includes a hydraulically controllable coupling to couple a rotating input and to an output to rotate, or to decouple the input and the output, with coupling and decoupling modes selected by switching a hydraulic device such as a vane pump between a pumping mode and a mode in which it does not pump. In an example, the system cooperates with a transmission to increase the number of possible gear ratios in some examples.

A vehicle driveline component includes a torque converter including an actuator and a clutch. The actuator includes an actuator piston slidable within an actuator chamber and dividing the actuator chamber into loosening and tightening chambers. The actuator piston moves the stator blades between a plurality of pitch positions. The clutch selectively couples the turbine to the impeller. The clutch includes a spring and clutch piston. The clutch piston at least partially defines an apply chamber and a release chamber. The apply chamber is in fluid communication with the tightening chamber via a hydrodynamic chamber. The release chamber is in fluid communication with the loosening chamber. The clutch piston is movable between an engaged position which inhibits relative rotation between the housing and the turbine and a disengaged position permitting relative rotation. The clutch spring is supported by the turbine hub and biases the clutch piston toward the disengaged position.

A vehicle driveline component includes a torque converter including an actuator and a clutch. The actuator includes an actuator piston slidable within an actuator chamber and dividing the actuator chamber into loosening and tightening chambers. The actuator piston moves the stator blades between a plurality of pitch positions. The clutch selectively couples the turbine to the impeller. The clutch includes a spring and clutch piston. The clutch piston at least partially defines an apply chamber and a release chamber. The apply chamber is in fluid communication with the tightening chamber via a hydrodynamic chamber. The release chamber is in fluid communication with the loosening chamber. The clutch piston is movable between an engaged position which inhibits relative rotation between the housing and the turbine and a disengaged position permitting relative rotation. The clutch spring is supported by the turbine hub and biases the clutch piston toward the disengaged position.

An example includes a hydraulically controllable coupling to couple a rotating input and to an output to rotate, or to decouple the input and the output, with coupling and decoupling modes selected by switching a hydraulic device such as a vane pump between a pumping mode and a mode in which it does not pump. In an example, the system cooperates with a transmission to increase the number of possible gear ratios in some examples.

An example includes a hydraulically controllable coupling to couple a rotating input and to an output to rotate, or to decouple the input and the output, with coupling and decoupling modes selected by switching a hydraulic device such as a vane pump between a pumping mode and a mode in which it does not pump. In an example, the system cooperates with a transmission to increase the number of possible gear ratios in some examples.

An example includes a hydraulically controllable coupling to couple a rotating input and to an output to rotate, or to decouple the input and the output, with coupling and decoupling modes selected by switching a hydraulic device such as a vane pump between a pumping mode and a mode in which it does not pump. In an example, the system cooperates with a transmission to increase the number of possible gear ratios in some examples.

An example includes a hydraulically controllable coupling to couple a rotating input and to an output to rotate, or to decouple the input and the output, with coupling and decoupling modes selected by switching a hydraulic device such as a vane pump between a pumping mode and a mode in which it does not pump. In an example, the system cooperates with a transmission to increase the number of possible gear ratios in some examples.

A torque converter stator has interchangeable blades and has a body member with a central hub and an annular wall. Dovetail openings are located on an outer surface of the annular wall. Each blade has a dovetail pin that is removably received within a respective one of the dovetail openings. A cover plate is removably attached to the body member in order to secure the blades in place within their respective dovetail openings. A heated duct ring is positioned over the outer ends of the blades and allowed to heat shrink into contact with these ends as the duct ring cools and shrinks, thereby securing the duct ring to the remainder of the stator.

A torque converter stator has interchangeable blades and has a body member with a central hub and an annular wall. Dovetail openings are located on an outer surface of the annular wall. Each blade has a dovetail pin that is removably received within a respective one of the dovetail openings. A cover plate is removably attached to the body member in order to secure the blades in place within their respective dovetail openings. A heated duct ring is positioned over the outer ends of the blades and allowed to heat shrink into contact with these ends as the duct ring cools and shrinks, thereby securing the duct ring to the remainder of the stator.