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Modine Manufacturing Company

Nicholas R Siler

Frank Nelson Jarrett

Fan horsepower requirements and the size of power train heat exchangers may be reduced in a vehicular cooling system that includes an inlet ( ) for the receipt of ambient air and first and second heat exchangers ( ), ( ) in proximity to the inlet ( ) to receive ambient air therefrom and which are respectively adapted to receive first and second heat exchanger fluids by the ambient air. The first and second heat exchangers ( ), ( ) are in side by side, substantially non superimposed relation to define first and second air flow paths ( ) extending in fluid flow parallel to a respective one of the heat exchangers ( ), ( ) from the inlet ( ) to points ( ), ( ), ( ) of discharge. A fan ( ) flows air from the inlet ( ) through the flow paths ( ) and a shutter ( ) is located in one of the flow paths ( ) and is movable between first and second positions respectively restricting air flow and allowing relatively unrestricted air flow. An actuator ( ) provided for moving the shutter ( ) between the positions and a control ( ) is provided for the actuator ( ) which is responsive to power train and air conditioning system operating conditions.

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Racine, WI, United States of America

Nicholas R Siler