| 摘要 |
PROBLEM TO BE SOLVED: To stop an implement immediately for preventing unexpected operation of the implement previously when an engine starts operation by an error and an electric motor stops operation in a state that the motor of a hydraulic pump drives, the hydraulic pump can be selectively driven by the engine and the electric motor in an installation object for work vehicle.SOLUTION: Controllers UK2, UV for changing a drive state of an engine drive state and a motor drive state of the hydraulic pump P control a valve device MV so as to stop implements 2,7 immediately when an engine E starts operation in the drive state of the motor. |
