Katalysatorträger aus Metall

A metallic catalyst carrier forming part of a catalytic converter for purifying exhaust gas discharged from an internal combustion engine of an automotive vehicle. The metallic catalyst carrier comprises a plurality of layers of corrugated metal sheet which has a plurality of corrugations whose ridg...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NISHIZAWA, KIMIYOSHI, TAKAHASHI, HIDEAKI
Format:	Patent
Sprache:	ger
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PUNCHING METAL SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	A metallic catalyst carrier forming part of a catalytic converter for purifying exhaust gas discharged from an internal combustion engine of an automotive vehicle. The metallic catalyst carrier comprises a plurality of layers of corrugated metal sheet which has a plurality of corrugations whose ridge portions are parallel with each other and extend in a direction of flow of gas to be purified, and a plurality of layers of flat metal sheet which is substantially flat. Each layer of the flat metal sheet and each layer of the corrugated metal sheet are alternately put one upon another so as to form the metallic catalyst carrier of a monolithic structure in which gas passages are defined between each layer of the flat metal sheet and each layer of the corrugated sheet, the gas flowing through the gas passages in the gas flow direction. Additionally, the metallic catalyst carrier of the monolithic structure has a gas inlet section through which the gas is introduced, a gas outlet section through which the gas is discharged, and an intermediate section located between the gas inlet section and the gas outlet section in the gas flow direction. The intermediate section includes only either one of the layers of the flat metal sheet and the layers of the corrugated metal sheet so as to be free from the other. The gas passages of the gas outlet section are higher in cross-sectional density than those of the gas inlet section.