Patent ID: 8662220

Claim:
A vehicle with a power management system, comprising: a battery; an internal combustion engine adapted to deliver power to a vehicle load; a battery powered component powered by the battery; an engine powered component powered by the engine, the battery powered component and the engine powered component being adapted to perform substantially the same functions; a controller arranged to stop operation of the engine powered component so that additional engine power is available to the vehicle load, and to initiate operation of the battery powered component, when power sought to be delivered to the vehicle load from the engine reaches a predetermined percentage of maximum engine load; and a second engine powered component powered by the engine, the controller being arranged to permit initiation of operation of the second engine powered component when the amount of power sought to be delivered from the vehicle's engine to the second engine powered component is no greater than a second predetermined percentage of maximum engine load, the controller being arranged to stop operation of the engine powered component so that additional engine power is available to the second engine powered component and to operate the battery powered component when the amount of power sought to be delivered from the vehicle's engine to the second engine driven component exceeds the second predetermined percentage of maximum engine load, wherein the battery powered component and the engine powered component are each auxiliary components.