| 摘要 |
PURPOSE: A driving unit of a radiator fan of an automobile is provided to reduce the cost by removing a water temperature sensor for driving a radiator fan and making it possible to set a driving mode of the radiator fan due to a water temperature sensor for driving an engine, a velocity of the automobile, and an operating condition of an air-conditioner. CONSTITUTION: A driving unit of a radiator fan(31) comprises a water temperature sensor(11), vehicle velocity sensor(12), air-conditioner switch(13) of which on-off state is varied due to a driver's choice, an air-conditioner pressure switch(14) for detecting a degree of the driving strength of a compressor of the air-conditioner, a control unit(20) for control a driving mode of the radiator fan due to the signals of the sensors and the switches, the radiator fan(31) of which an operating condition is varied due to an output signal of the control unit, and an idle speed control actuator(32) controlling rotational frequency of an idle engine due to the output signal of the control unit.
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