PROBLEM TO BE SOLVED: To provide a working machine allowing for reduction in fan power and thereby allowing for sufficient suppression of fuel consumption, and a cooling control method for the working machine.SOLUTION: The working machine comprises: fans 52A-52D generating cooling air; a plurality of first heat exchangers 53A, 53B performing heat exchange between a first refrigerant passed through a prescribed first portion in an engine 32, and the cooling air; a plurality of second heat exchangers 54A, 54B performing heat exchange between a second refrigerant passed through a prescribed second portion in the engine 32, and the cooling air; a fan driving part 711 driving the fans 52A-52D; and an opening/closing control part 712 controlling each of opening and closing movements of a plurality of first on-off valves 61A, 61B and a plurality of second on-off valves 63A, 63B so that at least one of the first refrigerant and the second refrigerant is passed through only a region where the fans 52A-52D are driven by the fan driving part 711 and the air flow of the cooling air is generated.SELECTED DRAWING: Figure 5

    【課題】ファン動力を低減し、燃料消費量を十分に抑制することができる作業機械及び作業機械の冷却制御方法の提供。【解決手段】本発明は、冷却風を生起するファン52A〜52Dと、エンジン32内の所定の第1部位を流通した第1冷媒と冷却風との熱交換を行う複数の第1熱交換器53A,53Bと、エンジン32内の所定の第2部位を流通した第2冷媒と冷却風との熱交換を行う複数の第2熱交換器54A,54Bと、ファン52A〜52Dを駆動するファン駆動部711と、ファン駆動部711によってファン52A〜52Dが駆動して冷却風の気流が発生した領域のみを第1冷媒及び第2冷媒の少なくとも一方が通過するように、複数の第1開閉弁61A,61B及び複数の第2開閉弁63A,63Bの開閉動作をそれぞれ制御する開閉制御部712とを備えた。【選択図】図5


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    Title :

    WORKING MACHINE AND COOLING CONTROL METHOD FOR WORKING MACHINE


    Additional title:

    作業機械及び作業機械の冷却制御方法


    Contributors:

    Publication date :

    2018-03-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL



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