Engine and cooling system arrangement for a harvester

A self-propelled harvesting machine, comprising:

• a frame having a forward end, a rear end opposite the forward end, and sides extending between the forward and rear ends;
• an engine supported on the frame intermediate the forward end and the rear end, the engine being contained in an engine compartment;
• a cooler box supported on the frame at an elevation higher than the engine and in vertically offset relation thereto, the cooler box having an inlet opening facing in a first sideward direction, a discharge opening facing in a second sideward direction opposite the first sideward direction, and an interior extending between the inlet and discharge openings;
• at least one heat exchanger disposed in the interior of the cooler box;
• a fan configured and disposed for generating an air flow in the second sideward direction through the cooler box such that at least a portion of the air flow will pass through the at least one heat exchanger and the discharge opening;
• and
• an air flow duct having an inlet disposed adjacent to a portion of a periphery of the discharge opening of the fan box for receiving a limited portion of the air flow generated by the fan, the duct extending downwardly to the engine compartment, such that the limited portion of the air flow will flow through the air flow duct into the engine compartment so as to create a positive air pressure condition therein, and wherein at least a portion of an exhaust duct of the engine extends through the air flow duct.

An engine and cooling system arrangement for a self-propelled harvesting machine, comprising:

• an engine supported on a frame of the machine at a first elevation intermediate a forward end and a rear end thereof, the engine being contained in an engine compartment;
• a heat exchanger housing supported on the frame rearwardly of the engine at a second elevation higher than the first elevation, the heat exchanger housing having an inlet opening facing in a first sideward direction and including a filter screen in covering relation thereto, a discharge opening facing in a second sideward direction opposite the first sideward direction, the heat exchanger housing containing at least one heat exchanger;
• a fan configured and operable for generating an air flow into the heat exchanger housing through the filter screen, sidewardly through the at least one heat exchanger, and outwardly from the heat exchanger housing through the discharge opening;
• and
• an air flow duct having an inlet disposed adjacent to a peripheral edge of the discharge opening of the heat exchanger housing in a position and orientation for receiving a portion of the air flow, the duct extending downwardly and forwardly to the engine compartment, such that the portion of the air flow will flow through the duct and enter the engine compartment so as to create a positive air pressure condition therein, and an exhaust duct of the engine and at least one fluid line extending upwardly through the air flow duct to the fan box.