DRIVING APPARATUS OF ACTIVE AIR-FLAP, ACTIVE AIR-FLAP INCLUDING THE SAME AND OPERATION METHOD THEREOF

摘要

The present invention relates to a driving device for an active air flap, an active air flap including the same, and a method of operating the same. The driving device of the active air flap according to an embodiment of the present invention includes a radiator 100 that cools the coolant heated by the engine and cools the coolant; A reservoir tank 200 for storing coolant discharged from the radiator 100 as the coolant inside the radiator 100 expands by the coolant heated by the engine; A drain pipe (300) communicating the radiator (100) and the reservoir tank (200) to deliver the coolant discharged from the radiator (100) to the reservoir tank (200); And a booster 400 for opening or closing an active air flap using the coolant flowing out of the reservoir tank 200 communicated with the radiator 100 as the cooling water inside the radiator 100 expands. Includes. According to the present invention, since the flap is physically opened or closed according to the cooling water temperature without the control of the ECU, the flap can be appropriately opened or closed as necessary even if the engine room internal temperature rises. In addition, since the flap is opened and closed using the pressure of the coolant of the radiator, the actuator is omitted, thereby reducing the cost of the vehicle.