Engine compartment structure of a work machine

Abstract

In a structure of an engine compartment in a work machine such as a tractor, a bulldozer, a hydraulic excavator, a wheel loader, the air taken through vents, which are formed on side covers and a hood covering the engine compartment, is supplied directly to a radiator via ducts which are provided on the side of the side covers and the side of the hood respectively. The ducts cover the vents, thereby preventing noise within the engine compartment from escaping to the outside. Therefore it is possible to increase a cooling efficiency of the radiator by supplying the outside air, which does not take up the heat of an engine, directly to the radiator, as well as to reduce the engine sound and prevent the engine noise from escaping.

What is claimed:  
     
         1 . An engine compartment structure of a work machine comprising: 
 a pair of first ducts interposed between an engine and first vents on side covers covering right and left sides of an engine compartment, said pair of first ducts introducing air taken through the first vents directly to a radiator.    
     
     
         2 . An engine compartment structure according to  claim 1 , wherein said pair of first ducts are mounted to said right and left side covers.  
     
     
         3 . An engine compartment structure according to  claim 1 , further comprising at least one second duct interposed between the engine and second vents on a hood covering an upper portion of the engine compartment, said second duct introducing air taken through the second vents directly to the radiator.  
     
     
         4 . An engine compartment structure according to  claim 2 , further comprising at least one second duct interposed between the engine and second vents on a hood covering an upper portion of the engine compartment, said second duct introducing air taken through the second vents directly to the radiator.