| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan structure for a heat exchanger for an automobile capable of improving fan efficiency according to a traveling condition of the automobile, and preventing increase of ventilation resistance and overcool of the engine. SOLUTION: In the fan structure for a heat exchanger for the vehicle provided with an axial flow fan, pitch angle of a blade 3b of the fan (motor fan 3) is formed in rotatable in fore-aft direction to be optimum pitch angle according to traveling conditions of the automobile. COPYRIGHT: (C)2006,JPO&NCIPI
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