Exhaust system component having insulated double wall

Details Exhaust system component having insulated double wall Exhaust system component having insulated double wall

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 13/14 (2010.01) F01N 3/08 (2006.01)

Patent

CA 2521104

An exhaust system component (18, 10) for use in an exhaust system of a motor vehicle. The exhaust system component comprises a double wall surrounding a space (9, 11; 21) through which exhaust gas may flow when the exhaust system component is in use in an exhaust system. The double wall is comprised of a first and second metal wall (12, 14; 26, 28) that define between them a gap. The gap comprises an insulation material (16) made of chopped aluminium or magnesium aluminium silicate glass fibers. The insulation material can be in the form of, for example, an end cone perform. The exhaust system component can be an exhaust pipe (18).

L'invention concerne un composant pour système d'échappement (18, 10) utilisé dans un système d'échappement d'un véhicule à moteur. Le composant comprend une double paroi entourant un espace (9, 11 ; 21) à travers lequel les gaz d'échappement peuvent circuler lorsque ledit composant est opérationnel dans ledit système d'échappement. La double paroi est formée d'une première et d'une seconde parois métalliques (12, 14 ; 26, 28) définissant un écartement entre elles. L'écartement comprend un matériau isolant (16) composé de fibres de verre de silicate d'aluminium ou de silicate de magnésium-aluminium en morceaux. Le matériau isolant peut être sous la forme, par exemple, d'une pré-forme tronconique. Le composant pour système d'échappement peut être un tuyau pour gaz d'échappement.

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