RADIATOR COOLING AIR PATH FOR CONSTRUCTION MACHINE VEHICLE

摘要

PURPOSE:To reduce noise of fan by mounting a radiator on a plenum chamber and discharging radiator cooling air through the plenum chamber to the outside. CONSTITUTION:A plenum chamber constructed with front/rear, right/left and upper/lower wall faces with an inlet 19 and an outlet 20 being opened respectively through the rear portion of the upper wall face and the front portion of the lower wall face is provided, and a radiator 3 is arranged near the front side of the opening in the upper wall face of the plenum chamber. A fan 4 is arranged in the rear of the radiator 3 and functions such that cooling air is sucked from the upper front of the radiator 3 then the majority of cooling air passed through the radiator 3 is turned reversely by a main frame 6a constituting the rear wall of the chamber to pass through the inlet 19 and the chamber and discharge downward through the outlet 20. Remaining portion of cooling air are passed through a space between an engine hood 15 and an engine 5 and discharged rearward.