Patent ID: 7464780

Claim:
A system for recovering regenerative power in a vehicle, the system comprising: a first set of vehicle wheels; a second set of vehicle wheels; one or more controllers; an electric machine that performs as a motor in a first mode of operation and performs as a generator in a second mode of operation; a regenerative power source electrically coupled to the electric machine, the regenerative power source configured to supply power to the electric machine when the electric machine is in the first mode of operation and to receive power from the electric machine when the electric machine is in the second mode of operation; and a driveline coupled to the electric machine and the first set of vehicle wheels for transferring torque between the electric machine and the first set of vehicle wheels, the driveline including a controllable coupling apparatus in electronic communication with the one or more controllers for selectively coupling, during vehicle deceleration, the electric machine to the second set of vehicle wheels in response to a signal from the one or more controllers.