Patent ID: 7455135
Filing Date: 2008-11-25
Classification: B60K,Y02T,Y10S

Abstract:
1. A hybrid electric vehicle powertrain for an automotive vehicle comprising an engine, a first traction wheel and axle assembly, a second traction wheel and axle assembly, a power transmission mechanism driveably connected to the engine and a torque transfer case with a transfer case torque input shaft connected to a transmission mechanism torque output shaft, the powertrain comprising: an electric motor; a first transfer case torque output shaft connected driveably to the first traction wheel and axle assembly; a second transfer case torque output shaft connected driveably to the second traction wheel and axle assembly; the electric motor and the first transfer case torque output shaft being assembled on a common first axis; a torque multiplier gearset; a torque input element of the torque multiplier gearset being connected driveably to the motor; the second transfer case torque output shaft being disposed on a second axis that is offset from the first axis; a torque cross-drive mechanism driveably connecting a torque output element of the torque multiplier gearset to the second transfer case torque output shaft, and a 4×4 coupler clutch establishing a driving connection between the first transfer case torque output shaft and a torque input element of the torque cross-drive mechanism, the electric motor being connected to the second transfer case torque output shaft only when the 4×4 coupler clutch is open.