Muffler and associated assembly having a catalyst carrier body and a retaining element and method for producing the assembly

摘要

A muffler and an associated assembly for cleaning exhaust gas, especially from small engines, include a metal catalyst carrier body and a retaining element which is preferably built into a muffler casing. The catalyst carrier body has a plurality of inner flow paths and is mounted in an exhaust pipe. The retaining element has an opening which surrounds at least a part of a jacket surface of the catalyst carrier body and is directly secured thereto, so that the catalyst carrier body remains dimensionally stable and can be transported. The retaining element can be joined to the exhaust pipe casing which forms an inflow chamber and an outflow chamber in such a way that the retaining element seals and separates the two chambers from each other. Due to the use of the retaining element, no jacket tube is required for the catalyst carrier body which enables the carrier body to be built into a muffler casing both directly and easily. A method for producing the assembly is also provided.