Engine control device of working machine, working machine and engine control method of working machine

摘要

A motor control apparatus of a work machine controls an internal combustion engine of the work machine including a swing body, a work implement attached to the swing body, a hydraulic actuator that operates the work implement, a hydraulic pump that operates the hydraulic actuator, and the internal combustion engine that drives the hydraulic pump and a speed thereof a load is changed. The engine control device of the work machine includes: a determination unit configured to determine whether a condition requiring no work with the work equipment is established; and a motor control unit configured to activate the control to determine, during the discharge time, a target rotational speed targeted by the engine on the basis of the power drawn by the hydraulic pump in the event that one of Hydraulic pump ejected hydraulic oil is relaxed when the condition is established, and to disable the control during the discharge time when the condition is not established.