Patent ID: 8813935

Claim:
A launch and disconnect clutch assembly for a hybrid powertrain comprising, in combination, a clutch input member and a first plurality of clutch plates splined to said clutch input member, a clutch output member and a second plurality of clutch plates splined to said clutch output member and interleaved with said first plurality of clutch plates, a hydraulic clutch actuator for compressing said pluralities of clutch plates and having a compensating chamber and an actuation chamber, a damper assembly having an input adapted to be driven by a prime mover and an output coupled to said clutch input member, an electric motor including a rotor coupled to said clutch output member, a stator and a cooling fluid passageway surrounding said stator, a transmission input shaft directly coupled to said clutch output member, a first axial passageway within said transmission input shaft for providing hydraulic fluid to said actuation chamber of said hydraulic clutch actuator, a second axial passageway adjacent an outer surface of said transmission input shaft for providing hydraulic fluid to said compensating chamber of said hydraulic clutch actuator and a third passageway between said compensating chamber and said first and second pluralities of clutch plates for providing hydraulic fluid to said first and second pluralities of clutch plates.