Patent ID: 7997238

Claim:
An engine and cooling system apparatus for a self-propelled harvesting machine, comprising: a frame having a forward end, a rear end opposite the forward end, and first and second sides extending between the forward end and the rear end; an engine supported on the frame at a first elevation intermediate the forward end and the rear end, the engine being contained in an engine compartment; a cooler box supported on the frame at a second elevation higher than the first elevation an in vertically offset relation to the engine compartment, the cooler box having an inlet opening adjacent to the first side of the frame, a discharge opening adjacent to the second side of the frame, and an interior, defining an air flow path into the cooler box through the inlet opening, through the interior, and from the cooler through the discharge opening, and at least one heat exchanger disposed in the air flow path for flow of the air flow therethrough; a fan configured and disposed for generating an air flow along the air flow path through the cooler box so as to flow through the at least one heat exchanger and outwardly from the cooler box through the discharge opening; and an air flow duct having an inlet disposed adjacent to a peripheral portion of the discharge opening of the cooler box and only partially in the air flow path, for receiving a portion of the air flow through the discharge opening, the air flow duct extending downwardly to the engine compartment, such that the limited portion of the air flow will flow through the duct into the engine compartment so as to create a positive air pressure condition therein.