| 摘要 |
PURPOSE: A pump control/operation system of construction machinery is provided to simplify a power transfer system between an engine and an actuator and enable power to be transferred to reduce the power loss of the engine by a hydraulic element since the actuator and a pump are installed to correspond one to one. CONSTITUTION: A pump control/operation system of construction machinery comprises an operating pump(100), an auxiliary control valve(C) and a supply pump(105). The operating pump supplies oil, one to one, to an actuator, which shows high frequency of operation and consumes a lot of energy. The auxiliary control valve distributes oil to another actuator, which shows relatively low frequency of operation. The supply pump supplies oil to the auxiliary control valve. |
