Cartridge for purifying exhaust gas
AssigneeSueddeutsche Kuehlerfabrik Julius Fr. Behr GmbH & Co. KG
InventorsManfred Nonnenmann, Wolfgang Hesse, Klaus Haller, Helmut Bardong
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Abstract
A cartridge for purifying exhaust gases from the internal combustion engine of an automotive vehicle or some other source comprising a catalyst support matrix wound of metal foil and a metal jacket housing said support matrix wherein a press fit exists between the exterior of the support matrix and the interior surface of the jacket and the support matrix and the jacket are welded or brazed together within the area of the press fit. Processes and apparatus for producing the cartridge of the invention are also disclosed.
Claims12
A cartridge for purifying exhaust gases, comprising:
- a catalyst support matrix comprised of spirally wound, alternately disposed smooth and corrugated metallic sheets defining a plurality of exhaust gas passageways therebetween, said catalyst support matrix comprising an oval transverse cross-sectional configuration, defined by opposing parallel straight side circumferential segments of a length S and opposing semi-circular end circumferential segments each having a radius R, and wherein said spirally wound metallic sheets from the top half and the bottom half of said oval configuration contiguously abut along a central interface line having a length S;
- a metal jacket housing said catalyst support matrix, the interior of said metal jacket holding said catalyst support matrix by means of a press fit relationship with the exterior of said catalyst support matrix along at least a circumferential portion of its length;
- and
- a bond between the exterior of said catalyst support matrix and the interior of said metal jacket formed in said circumferential portion.
Dependencies are inferred from the claim text.