ENGINE COOLING SYSTEM OF VEHICLE AND METHOD FOR CONTROLLING THE SAME

摘要

The present invention relates to an engine cooling system of a vehicle and a controlling method thereof and, more specifically, to an engine cooling system of a vehicle and a controlling method thereof capable of minimizing the friction loss and heat loss of an engine, the operation of a cooling fan in an unnecessary area, and a drive loss thereby by maintaining an engine cooling water temperature highly in comparison with an existing engine cooling water temperature by increasing an operation temperature of a thermostat and a fan clutch in a condition of a low air temperature. To achieve the aforementioned purposes, the present invention provides the engine cooling system of a vehicle and the controlling method thereof, which includes: an air temperature sensor which detects an air temperature; a radiator which emits heat of cooling water; an electronic thermostat which controls the cooling water which flows to the radiator; a cooling fan unit which has the cooling fan controlling a heat exchange quantity in the radiator; and a control unit which controls the operation temperature of the thermostat and the fan clutch in real time depending on the air temperature which is detected by the air temperature sensor. [Reference numerals] (AA) Cooling water temperature; (BB) Operation temperature; (CC) Electronic fan clutch; (DD) Controlled temperature; (EE) Electronic thermostat; (FF) Air temperature