Patent ID: 6877577
Filing Date: 2005-04-12
Classification: B60K,Y02T

Abstract:
1. A motor vehicle all wheel drive system for automatically providing maximum traction and efficiency without wheel slip, with regeneration and retardation for each individual wheel of the vehicle under all loading and driving conditions regardless of driving surface, characterized in that: the system includes a drive motor for each wheel and means at each wheel operative to sense a loss of traction; the system further includes a device for generating energy; each motor receives energy from the generating device and drives a wheel of the vehicle; the system further includes an energy storage device and a device for directing energy flow in the system; the means at each wheel operative to sense a loss of traction comprises means for sensing wheel load and operative; in response to sensed wheel load to direct energy from the energy generating device to the motor; in response to a sensed loss of wheel load to reduce the energy supply to the motor and direct the motor energy discharged to the energy storage device; and in response to a sensed resumption of wheel load to direct regenerative energy from the energy storage device to the motor to assist in powering the motor; each motor is further operative to provide forward and reverse propulsion; and the energy from the generating device is utilized to provide forward and reverse motor drive and the stored energy from the energy storage device is utilized to provide only forward motor drive only when the motor is directed to a forward drive mode and the motor is no longer overrunning.