| 摘要 |
PROBLEM TO BE SOLVED: To enable to curtail wind-cutting sound. SOLUTION: This cooling system is provided with fan shroud 2 which is fixed at rear part of radiator 1 for internal combustion engine and has space at center for housing fan, and fan support 4 which extends through the housing space passing its rear end and fixed to fan shroud 2 at both ends, and fan 3 arranged in housing space and supported by fan support 4 in free rotation. In this case, the cross section of fan support 4 is formed in circular or elliptical shape at least at part near end of the housing space.
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