A DEVICE AND METHOD FOR RAM AIR TREATMENT OF A VEHICLE COOLING SYSTEM

The invention relates to a cooling system (10) for a vehicle, the cooling system comprising a cooling fan (12) comprising a ram air turbine (13) disposed in an aperture (13') of a fan shroud (14), the fan shroud comprising:- an opening (16),- a shutter mechanism (18) movable between a closed position in which it closes the opening, and an open position in which it opens the opening so that a ram air flow can pass through the opening,characterized in that the fan shroud further comprises:- a velocity sensor (20) configured to measure ram air flow velocity,- a temperature sensor (22) configured to measure ram air flow temperature, and- an actuator (24) configured to move the shutter mechanism between the closed position and the open position based on measured ram air flow velocity and measured ram air flow temperature.