Patent ID: 7402923

Claim:
A hybrid transmission comprising: a transmission housing defining a generally cylindrical cavity and having a wall portion extending radially-inwardly toward a centerline of the housing; a first electric motor including a first stator and a first rotor; a second electric motor including a second stator and a second rotor: a first member separate from said transmission housing having a generally cylindrical portion that circumscribes at least part of said first stator and that is operatively connected to said first stator and to a first axially outer surface of said wall portion, to thereby form a first preassembled module adapted for installation within said cylindrical cavity; and a second member separate from said transmission housing having a generally cylindrical portion that circumscribes at least part of said second stator and that is operatively connected to said second stator and to a second axially outer surface of said wall portion, to thereby form a second preassembled module adapted for installation within said cylindrical cavity; wherein said first member and said second member each cooperate with said transmission housing once installed within said cylindrical cavity to form at least one annular coolant flowpath therebetween, said at least one annular flow path circumscribing said first stator and said second stator, and said member defining a plurality of holes sufficiently positioned to direct coolant from said at least one annular coolant flowpath radially inward toward said first stator and said second stator.