作業車両

Japanese Patent JP7221756

B2

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.

Yuki Nukii
Yoshikawa Regular
Tetsuji Tanaka
Hironao Suzuki

JP2019057186A

February 14, 2023

March 25, 2019

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Hitachi Construction Machinery Co., Ltd.

F01P5/04; E02F9/00; F01M5/00; F01P7/04; F01P11/16

JP11193719A
JP2013181344A
JP2010168857A
JP2007182710A
JP2013155719A
JP10068142A
JP2001065347A
JP2018173044A
JP7224654A
JP2004197682A
JP2006057600A

US20150017901

Patent Attorney Corporation Takewa International Patent Office

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