The torque transfer device operating system using a piezo-electronic pump

A hydraulic control system for actuating a torque transmission device in a transmission includes a sump for receiving a hydraulic fluid and a piezoelectric pump for pumping the hydraulic fluid from the sump to the torque transmitting device. A first fluid flow path leads through the hydraulic fluid from the sump to the piezoelectric pump and a second fluid flow path leads through the hydraulic fluid from the piezoelectric pump to the torque transmitting device. An outlet transferred to the hydraulic fluid either from the torque transmitting device to the sump.