Title:
WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2020/195013
Kind Code:
A1
Abstract:
Provided is a work vehicle in which the life of various components for driving a cooling fan can be extended while effectively eliminating clogging in a heat exchanger. A wheel loader 1 is provided with a controller 5 that controls a cooling fan drive device 45 so that a cooling fan 44 repeatedly rotates forward and in reverse, wherein the controller 5 controls the cooling fan drive device 45 so that the rotating direction of the cooling fan 44 is switched from forward to reverse in a reduced interval time set shorter than an initially set normal interval time when the temperature of oily water cooled by a heat exchanger unit 4 has risen in a time shorter than an initially set time, and the controller 5 controls the cooling fan drive device 45 so that the rotating direction of the cooling fan 44 is switched from forward to reverse in the normal interval time rather than the reduced interval time when the temperature of the oily water cooled by the heat exchanger unit 4 has fallen to or below a cooling temperature threshold value at which a thermostat 30A has been fully opened.
Inventors:
NUKII MASAKI (JP)
YOSHIKAWA MASAKI (JP)
TANAKA TETSUJI (JP)
SUZUKI HIRONAO (JP)
YOSHIKAWA MASAKI (JP)
TANAKA TETSUJI (JP)
SUZUKI HIRONAO (JP)
Application Number:
PCT/JP2020/000689
Publication Date:
October 01, 2020
Filing Date:
January 10, 2020
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
F01P5/04; E02F9/00; F01M5/00; F01P7/04; F01P11/16
Foreign References:
| JPH11193719A | 1999-07-21 | |||
| JP2013181344A | 2013-09-12 | |||
| JP2010168857A | 2010-08-05 | |||
| JP2007182710A | 2007-07-19 | |||
| JP2013155719A | 2013-08-15 | |||
| JPH1068142A | 1998-03-10 | |||
| JP2001065347A | 2001-03-13 | |||
| JP2018173044A | 2018-11-08 | |||
| JPH07224654A | 1995-08-22 | |||
| JP2004197682A | 2004-07-15 | |||
| JP2006057600A | 2006-03-02 | |||
| US20150017901A1 | 2015-01-15 |
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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