| 摘要 |
The vehicle radiator (2) is fitted with a fan (3), which consists of a propeller (5) and a motor (4), which drives the propeller around a rotation axis (A), with a rotation sense (R). The propeller consists of central hub (10), linked to the motor and carrying the blades (12), extending radially outwards, designed to create a primary flow of air (42). An additional air passage (25) is fitted into the base (14) of the hub to allow a secondary flow of air (43) through the base of the hub.
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