Soundproof cover for automobile

Abstract

A soundproof cover to be mounted on the engine of an automobile is provided. The soundproof cover includes a foam material having a mixed cell structure of open cells and closed cells and a water absorption coefficient of 0.01 g/cm 3 or more and less than 0.5 g/cm 3 . The foam material is provided along the circumferential rim of a cover main body surface facing an engine, and projects to the engine side by a predetermined height such that the foam material closes the gap with respect to the engine at the time it is mounted on the engine.

What is claimed is:  
     
         1 . A soundproof cover to be mounted on an engine of an automobile, comprising: 
 a cover main body including a surface facing the engine; and    a foam material including a mixed cell structure of open cells and closed cells and having a water absorption coefficient of 0.01 g/cm 3  or more and less than 0.5 g/cm 3 ,    wherein said foam material is provided along a circumferential rim of said surface of said cover main body, and projects to an engine side by a predetermined height such that said foam material fills a gap with respect to the engine at the time it is mounted on the engine.    
     
     
         2 . The soundproof cover according to  claim 1 , wherein a bulk density of said foam material is 20 g/m 3  or more and less than 400 kg/m 3 .  
     
     
         3 . The soundproof cover according to  claim 1 , wherein a 25% compression hardness thereof is less than 0.5 N/cm 2 .  
     
     
         4 . The soundproof cover according to  claim 1 , wherein a bulk density of said foam material is 20 g/m 3  or more and less than 400 kg/m 3 , and a 25% compression hardness thereof is less than 0.5 N/cm 2 .