Patent ID: 7013646

Claim:
An auxiliary power system for a motor vehicle comprising: a first engine having an accessory belt drive system comprising a belt and a driven pulley, the belt driven by a first engine driver pulley; the first engine driver pulley comprising a first one-way clutch, said first one-way clutch transmitting torque in a pre-determined direction; a second engine drivingly connected to a fluid driver; a fluid driven motor connected to the fluid driver, the fluid driven motor operatively engaged with the accessory belt drive system belt; the fluid driven motor having a second one-way clutch, said second one-way clutch transmitting torque in a pre-determined direction; the fluid driven motor operable to drive the accessory belt drive system when the first engine is not operating, the first one-way clutch transmitting no torque when the accessory belt drive system is driven by the fluid driven motor; and the second one-way clutch transmitting no torque when the accessory belt drive system is being driven by the first engine driver pulley.