초록 ▼

A high-performance exhaust silencer in which a shell wall includes a shell outer plate, a shell inner plate, and a damping material to be inserted therebetween. A space between the shell outer plate and shell inner plate of the exhaust silencer is narrowed and the shell outer plate and the shell inn

A high-performance exhaust silencer in which a shell wall includes a shell outer plate, a shell inner plate, and a damping material to be inserted therebetween. A space between the shell outer plate and shell inner plate of the exhaust silencer is narrowed and the shell outer plate and the shell inner plate will not interfere with each other. An outer shape of the exhaust silencer is small but the expansion chambers are large by providing an air space between the shell outer plate and the shell inner plate. For the above-mentioned damping material, a material obtained by stretchably weaving metal wire into mesh is used.

대표청구항 ▼

What is claimed is: 1. An exhaust silencer for an internal combustion engine comprising: a shell wall including a shell outer plate; a shell inner plate; and a damping material inserted between the shell outer plate and the shell inner plate; wherein the damping material is a single layer of a stre

What is claimed is: 1. An exhaust silencer for an internal combustion engine comprising: a shell wall including a shell outer plate; a shell inner plate; and a damping material inserted between the shell outer plate and the shell inner plate; wherein the damping material is a single layer of a stretchably woven metal wire constructed into a woven metal mesh, the metal wire of the woven metal mesh having surface side portions (X), back side portions (Y), and bridging portions (B) extending between the surface side portions (X) and the back side portions (Y), the surface side portions (X) and the back side portions (Y) of the woven metal mesh contacting an inner surface of the shell outer plate and an outer surface of the shell inner plate, respectively, wherein the bridging portions (B) are oriented approximately in a direction orthogonal to a direction of each of the surface side portions (X) and the back side portions (Y) of the woven metal mesh. 2. The exhaust silencer for an internal combustion engine according to claim 1, wherein the metal wire is stainless steel wire. 3. The exhaust silencer for an internal combustion engine according to claim 1, wherein both the shell inner plate and the damping material of woven metal mesh are fabricated into cylindrical shapes, and the damping material of woven metal mesh is fabricated so that the surface side portions (X) are on an outer side of the woven metal mesh, and an inner diameter of the woven metal mesh is smaller than an outer diameter of the shell inner plate. 4. The exhaust silencer for an internal combustion engine according to claim 1, wherein the damping material is woven using a bundle of a plurality of metal wires. 5. The exhaust silencer for an internal combustion engine according to claim 1, wherein the shell inner plate includes an enlarged first end for mating with an inner surface of the shell outer plate and an enlarged distal end for mating with the inner surface of the shell outer plate with an intermediate portion extending therebetween. 6. The exhaust silencer for an internal combustion engine according to claim 5, wherein said damping material is positioned on at least a portion of said intermediate portion. 7. The exhaust silencer for an internal combustion engine according to claim 1, wherein the damping material is cylindrical and the woven metal mesh is stretchable in a diameter direction. 8. The exhaust silencer for an internal combustion engine according to claim 1, wherein a direction of metal wire of the woven metal mesh is slanted on the shell inner plate relative to a longitudinal direction of the exhaust silencer. 9. The exhaust silencer for an internal combustion engine according to claim 1, wherein the surface side portions (X) of the woven metal mesh make contact with the shell outer plate, and are oriented approximately in an axial direction of the shell for facilitating the positioning of the woven metal mesh on the shell inner plate. 10. The exhaust silencer for an internal combustion engine according to claim 1, wherein the back side portions (Y) of the woven metal mesh make contact with the shell inner plate, and are oriented approximately in a direction orthogonal to the axial direction of the shell for inhibiting the sliding of the woven metal mesh in the axial direction of the shell. 11. A shell for use in forming an exhaust silencer for an internal combustion engine comprising: a shell outer wall; a shell inner wall disposed within said shell outer wall; and a damping material inserted between the shell outer wall and the shell inner wall; wherein the damping material is a single layer of a stretchably woven metal wire constructed into a woven metal mesh for providing a thermal-insulation between the shell outer wall and the shell inner wall, the metal wire of the woven metal mesh having surface side portions (X), back side portions (Y), and bridging portions (B) extending between the surface side portions (X) and the back side portions (Y), the surface side portions (X) and the back side portions (Y) of the woven metal mesh contacting an inner surface of the shell outer plate and an outer surface of the shell inner plate, respectively, wherein the bridging portions (B) are oriented approximately in a direction orthogonal to a direction of each of the surface side portions (X) and the back side portions (Y) of the woven metal mesh. 12. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein the metal wire is stainless steel wire. 13. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein both the shell inner wall and the damping material of woven metal mesh are fabricated into cylindrical shapes, and the damping material of woven metal mesh is fabricated so that the surface side portions (X) are on an outer side of the woven metal mesh, and an inner diameter of the woven metal mesh is smaller than an outer diameter of the shell inner wall. 14. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein the damping material is woven using a bundle of a plurality of metal wires. 15. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein the shell inner wall includes an enlarged first end for mating with an inner surface of the shell outer wall and an enlarged distal end for mating with the inner surface of the shell outer wall with an intermediate portion extending therebetween. 16. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 15, wherein said damping material is positioned on at least a portion of said intermediate portion. 17. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein the damping material is cylindrical and the woven metal mesh is stretchable in a diameter direction thereof. 18. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein a direction of metal wire of the woven metal mesh is slanted on the shell inner wall relative to a longitudinal direction of the exhaust silencer. 19. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein the surface side portions (X) of the woven metal mesh make contact with the shell outer plate, and are oriented approximately in an axial direction of the shell for facilitating the positioning of the woven metal mesh on the shell inner plate. 20. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein the back side portions (Y) of the mesh make contact with the shell inner plate, and are oriented approximately in a direction orthogonal to an axial direction of the shell for inhibiting the sliding of the woven metal mesh in the axial direction of the shell. 21. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 1, wherein each of the side surface portions (X) of the woven metal wire is substantially straight in shape, and each is aligned at an angle with respect to an inner surface of the outer shell plate. 22. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 1, wherein junctures of the bridging portions (B) and the surface side portions (X) of the woven metal mesh make contact with an inner surface of the shell outer plate, and the back side portions (Y) of the woven metal mesh make contact with an outer surface of the shell inner plate. 23. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein each of the side surface portions (X) of the woven metal wire is substantially straight in shape, and each is aligned at an angle with respect to an inner surface of the outer shell plate. 24. The shell for use in forming an exhaust silencer for an internal combustion engine according to claim 11, wherein junctures of the bridging portions (B) and the surface side portions (X) of the woven metal mesh make contact with an inner surface of the shell outer plate, and the back side portions (Y) of the woven metal mesh make contact with an outer surface of the shell inner plate.