Patent ID: 7753147

Claim:
A power distribution system for a hybrid vehicle having an engine, the power distribution system comprising: an electric motor/generator; a vehicle accessory drive system comprising a first accessory; and a power distribution apparatus in operable communication with the engine, the electric motor/generator, and the vehicle accessory drive system, the power distribution apparatus comprising: a first power transfer member comprising a first shaft, the first shaft being configured to transfer power to the engine and from the engine; a second power transfer member comprising a second shaft, the second shaft being configured to transfer power to the motor/generator and from the motor/generator; a third power transfer member comprising a third shaft, the third shaft being configured to transfer power to the accessory drive system to drive the first accessory; and a first clutch configured to rotationally couple any two of the first shaft, the second shaft, and the third shaft; wherein the electric motor/generator, the engine, or a combination of the electric motor/generator and the engine, can supply power through the power distribution apparatus to the accessory drive system, and wherein the third shaft of the power distribution apparatus is configured to operate at a predetermined velocity during multiple vehicle operating modes, wherein the predetermined velocity is controlled by the motor/generator and is independent of the motor/generator operation and is independent of the engine velocity.