Agricultural harvester with air conduit

An agricultural harvester (100) comprises a chassis (106) supported on a plurality of wheels (110) for travel over the ground;

• a harvesting implement (104) supported on the front of the chassis (106);
• an internal combustion engine (108) disposed on the chassis (106) behind the harvesting implement (104);
• a radiator (112) coupled to the internal combustion engine (108) to transfer heat from engine coolant to ambient air;
• a fan (109) disposed to draw a flow of cooling air through the radiator having a first flow rate;
• and a conduit configured to conduct substantially the entire first flow rate of air to the radiator;
• wherein the improvement comprises the conduit defining a lower enclosure surrounding the inlet of the radiator and blocking substantially all air flow to the radiator except through an upwardly facing air inlet of the lower enclosure, and an upper enclosure comprising a plurality of screen walls for passing substantially the entire first flow rate of cooling air therethrough and having a downwardly facing air outlet, wherein the upwardly facing air inlet and the downwardly facing air outlet are fixed together to conduct substantially the entire first flow rate of air therethrough.