Patent ID: 6815840
Filing Date: 2004-11-09
Classification: B60L,H02P,Y02T

Abstract:
A hybrid electric power system, comprising:a) air compression means comprising an air compressor, a storage tank connected to said air compressor for receiving and storing compressed air in said storage tank, said storage tank having means for controllably releasing said compressed air; b) a hydraulic system comprising a hydraulic fluid reservoir, a pneumatic driven hydraulic fluid pump operated by said compressed air from said storage tank to thereby provide pressurized hydraulic fluid to said fluid reservoir, and a hydraulic motor operated by said pressurized hydraulic fluid from said fluid reservoir to rotate a drive shaft, said hydraulic system further including means for providing regenerative hydraulic fluid back to said hydraulic fluid pump; c) an electric generator rotatably driven by said drive shaft of said hydraulic motor, said electrical generator having electrical output leads, one of said leads connected to provide electrical power to said air compressor.