Hydraulic system of working machine and working machine

Abstract

A hydraulic system of a working machine includes a hydraulic actuator to be driven by a hydraulic fluid, a control valve to perform a switching operation for switching a flow rate of the hydraulic fluid supplied to the hydraulic actuator, and a controller to control the control valve. The control valve includes a solenoid and performs the switching operation in accordance with a current supplied to the solenoid. The controller supplies, to the solenoid, a shift current for causing the control valve to perform the switching operation and intermittently supplies a standby current when the shift current is not supplied, the standby current having a current value smaller than the shift current and within a range in which the control valve does not perform the switching operation.

Dependencies are inferred from the claim text.