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1. (WO2013146392) WORK MACHINE

Pub. No.:    WO/2013/146392    International Application No.:    PCT/JP2013/057540
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 16 00:59:59 CET 2013
IPC: F01P 7/04
E02F 9/00
F01P 5/04
F01P 7/12
F01P 7/16
F01P 11/08
Applicants: HITACHI CONSTRUCTION MACHINERY CO., LTD.
日立建機株式会社
Inventors: HYODO, Koji
兵藤 幸次
YAMASHITA, Masashi
山下 将司
AOKI, Isamu
青木 勇
TANAKA, Tetsuji
田中 哲二
CHONAN, Kazuo
長南 和夫
Title: WORK MACHINE
Abstract:
In the present invention, a work machine is provided with a rotation-rate-setting unit, a rotation-rate-regulating unit, and a control-characteristics-determining unit. The rotation-rate-setting unit sets a target rate of rotation of a cooling fan on the basis of the temperature of a coolant and control characteristics by which the temperature of the coolant and the target rate of rotation of the cooling fan are associated. The rotation-rate-regulating unit regulates the actual rate of rotation of the cooling fan so that the target rate of rotation is reached. The control-characteristics-determining unit determines the control characteristics so that the target rate of rotation set on the basis of the temperature of the coolant within a coolant temperature range at which a thermostat is fully closed to fully open is a value that differs according to the temperature of the external air.