Patent ID: 6460332
Filing Date: 2002-10-08
Classification: B60K,E02F,F15B,Y02T

Abstract:
A pressure oil energy recovery/regeneration apparatus, comprising hydraulic actuators actuated by the supply or pressure oil discharged from a hydraulic pump for actuating hydraulic actuators, main drive means for driving the hydraulic pump, recovery means for recovering return pressure oil flowing out of said hydraulic actuators, energy storage means for storing said recovered return pressure oil by conversion to a prescribed energy form, and regeneration means for supplementing an energy expended during the actuation of said hydraulic actuators by said hydraulic pump for actuating hydraulic actuators with the energy stored in said energy storage means, whereinsaid energy storage means comprises: a hydraulic motor used for recovery purposes and actuated by the inflow of the return pressure oil flowing out of said hydraulic actuators, said hydraulic motor being a separate device from the hydraulic pump for actuating hydraulic actuators, an electric generator for generating electric energy by receiving a drive force of said hydraulic motor used for recovery purposes, said electric generator being a separate device from said hydraulic pump for actuating hydraulic actuators, and a battery for storing the electric energy generated by said electric generator, said battery being a separate device from the main drive means, and said regeneration means comprises: supplemental drive means for driving the hydraulic pump for actuating hydraulic actuators by the electric energy stored in said battery said supplemental drive means being a separate device from the main drive means.