CONTROL SYSTEM FOR RECOVERING SWING MOTOR KINETIC ENERGY

摘要

This disclosure relates to a hydraulic system and method that converts the kinetic energy generated by the operation of a swing motor (11) into hydraulic potential energy and reuses the hydraulic potential energy for acceleration of the swing motor (11). An accumulator (88) can be provided for storing exit oil from the swing motor (11) that is pressurized by the inertia torque applied on the moving swing motor (11) via movement of an upper structure (6) of a machine (4). The pressurized oil in the accumulator (88) can be reused to accelerate the swing motor (11) by supplying pressurized oil to the swing motor (11).