Abstract: A vane pump for an automatic transmission includes a housing which may be spaced from the axis of the transmission input shaft axis and driven by a chain or gear train driven by the torque converter hub or disposed on and about the axis of the transmission input shaft and driven at engine speed. The vane pump includes a pair of port plates which reside on the end faces of a pump body having a cylindrical chamber which receives an eccentrically disposed rotor that is coupled to a stub shaft in an off-axis arrangement. The rotor includes a plurality of radial slots which receive a like plurality of vanes. The outer ends or edges of the vanes are in contact with the wall of the cylindrical chamber and the inner ends or edges are in contact with a pair of vane rings received within recesses in the ends of the rotor. The vanes are thus constrained between the wall of the chamber and the vane rings which positively determine their radial positions as they and the rotor rotate.

Abstract: Provided is a fluid pressure control device that includes an actuator and a body configured to house the actuator. The body has an opening arranged to receive pressurized fluid. The fluid pressure control device additionally includes a pressure sensor incorporated into the body relative to the opening to sense fluid pressure and to generate an electrical signal indicative of the sensed pressure. Furthermore, the fluid pressure control device includes an integrated circuit incorporated into the body, and operatively connected to the pressure sensor. The integrated circuit includes a transceiver configured to communicate with an external device by transmitting the electrical signal indicative of the sensed fluid pressure to the external device and receiving a control signal from the external device. The integrated circuit additionally includes a driver configured to power the actuator in response to the control signal.