Exhaust system

摘要

A component of an exhaust system for a combustion engine, particularly of a motor vehicle, which at least in part regions includes a self-supporting jacket. The jacket includes a porous, open-pore or closed-pore cellularly constructed foam. The foam is of a self-supporting design. By using such a foam the insulation of the component can be improved.

主权项

1. An internal combustion engine exhaust system component comprising a self-supporting exhaust system component jacket comprising:
an outer layer comprised of a closed-pore foam or of a non-porous tube, the outer layer forming an exhaust system component jacket outer surface; an inner layer inside of the outer layer and adjoining the outer layer, the inner layer comprising porous cellularly constructed open pore foam, wherein the foam of the inner layer is of a self-supporting design; and a lining layer inside of the inner layer and adjoining the inner layer, the lining layer comprising an open-pore foam wherein the open-pore foam of the lining layer has a smaller pore size than the open-pore foam of the inner layer, the lining layer forming an exhaust system component jacket inner surface.