Protective Shield for Thermal and Acoustic Shielding of Components of an Internal Combustion Engine

Abstract

The invention relates to a protective shield for the thermal and acoustic shielding of a components of an internal combustion engine, comprising a metal net with a multiplicity of through apertures; at least on absorber layer of a sound-absorbing material; and a carrier plate; wherein the metal net is arranged on the side of the protective shield facing the component; the at least one absorber layer is arranged between the metal net and the carrier plate; and the carrier plate in its edge region is folded over about the edge of the metal net.

1 . Protective shield for the thermal and acoustic shielding of a component of an internal combustion engine, comprising:
 a metal net having a multiplicity of through apertures and an edge;   at least one absorber layer of a sound-absorbing material; and   a carrier plate;   wherein   the metal net is arranged on the side of the protective shield facing the component;   the at least one absorber layer is arranged between the metal net and the carrier plate; and   an edge region of the carrier plate is folded over about the edge of the metal net.   
   
   
       2 . The protective shield according to  claim 1 , wherein the metal net includes a depression, and the at least one absorber layer is arranged within this depression. 
   
   
       3 . The protective shield according to  claim 2 , wherein the metal net is spaced from the carrier plate within the depression by at least about 5 mm. 
   
   
       4 . The protective shield according to  claim 1 , wherein the total area of the through apertures in the metal net equals about 20 to 30% of the total area of the metal net. 
   
   
       5 . The protective shield according to  claim 1 , wherein the carrier plate comprises an aluminized steel plate with a thickness of about approximately 0.4 mm. 
   
   
       6 . The protective shield according to  claim 1 , wherein the metal net comprises a wire mesh of aluminized metal wire. 
   
   
       7 . The protective shield according to  claim 1 , wherein the metal net comprises a wire mesh of galvanized metal wire. 
   
   
       8 . The protective shield according to  claim 1 , wherein the metal net comprises a wire mesh of stainless steel wire. 
   
   
       9 . The protective shield according to  claim 1 , wherein the sound-absorbing material comprises a fiber material. 
   
   
       10 . The protective shield according to  claim 9 , wherein the fiber material is basalt wool having, a specific weight of about 960 g/m 3 . 
   
   
       11 . The protective shield according to  claim 1 , wherein the sound-absorbing material comprises a foam rubber material. 
   
   
       12 . The protective shield according to  claim 11 , wherein the foam rubber material is melamine foam. 
   
   
       13 . The protective shield according to  claim 1 , wherein the at least one absorber layer is a multi-layer composite layer. 
   
   
       14 . The protective shield according to  claim 1 , wherein the carrier plate on the side facing the at least one absorber layer comprises a sound-absorbing surface structure. 
   
   
       15 . The protective shield according to  claim 1  including fastening means.