Abstract: Methods and system are provided for locking a half shaft to a wheel hub to engage four wheel drive are disclosed. In one example, a wheel hub is locked to a half shaft via a radially expanding engagement mechanism. The radially expanding engagement mechanism is without grease and without springs.

Abstract: Methods and system are provided for locking a half shaft to a wheel hub to engage four wheel drive are disclosed. In one example, a wheel hub is locked to a half shaft via a radially expanding engagement mechanism. The radially expanding engagement mechanism is without grease and without springs.

Abstract: A one-way clutch includes a first race secured against rotation and fitted with a coil, a second race supported for rotation, a coil carried by one of the races, and struts supported by one of the races, each strut driveably connecting and disconnecting the races in response to a magnetic field induced by current in the coil.

Abstract: A one-way clutch includes a first race secured against rotation and fitted with a coil, a second race supported for rotation, a coil carried by one of the races, and struts supported by one of the races, each strut driveably connecting and disconnecting the races in response to a magnetic field induced by current in the coil.

Abstract: A system for controlling the temperature of a transmission fluid includes a first heat exchanger communicating with a source of engine coolant for transferring heat between the engine coolant and the transmission fluid and including a first outlet through which transmission fluid exits the first heat exchanger, a second heat exchanger through which air may flow for transferring heat between the transmission fluid and the air and including a second inlet through which transmission fluid enters the second heat exchanger, and second outlet through which transmission fluid exits the second heat exchanger, and a first bypass valve for alternately opening and closing the second inlet and the second outlet when a temperature of transmission fluid exiting the first outlet is greater than a first reference temperature, and for bypassing the second heat exchanger when the temperature of transmission fluid exiting the first outlet is less than the second reference temperature.

Abstract: A dual mode one-way torque transmitting device includes an inner race having a first plurality of notches spaced about an axis. An intermediate race includes a second plurality of notches spaced about the axis, a first plurality of pockets spaced about the axis, and a first plurality of rockers, each rocker being located in a pocket of the intermediate race. A spring urges each rocker toward engagement with a notch on the inner race. An outer race includes a second plurality of pockets spaced about the axis, a second plurality of rockers, each rocker being located in a pocket on the outer race, and a plurality of actuators, each actuator alternately engages and disengages a rocker on the outer race and a notch on the intermediate race.