Patent ID: 8169110

Claim:
A powertrain comprising: a transmission having a transmission casing; and a motor positioned outside of the transmission casing; wherein the motor is configured to receive cooling oil to cool the motor/generator; wherein the motor has a stator, a rotor, and a housing assembly surrounding the stator and the rotor; wherein the housing assembly has an inlet configured to receive the cooling oil for distribution to the stator and the rotor; wherein the housing assembly has a stator housing to which the stator is mounted and has an axially-extending recess partially defining a supply gallery in fluid communication with the inlet, between the housing assembly and the stator, and through which the cooling oil is distributed to the stator and the rotor; wherein the motor has a flow control member at least partially circumscribing the rotor and axially adjacent the stator at the recess; and wherein the flow control member has circumferentially-spaced openings to distribute the cooling oil from the supply gallery to the stator.