Electrically heatable catalytic converter
AssigneeNippon Soken, Inc.
InventorsKiyohiko Watanabe, Tohru Yoshinaga, Akihiro Izawa, Osamu Fujishiro
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Abstract
An electrically heatable catalytic converter for internal combustion engines is provided. This catalytic converter includes a honeycomb multi-layered core member wound around an electrode. The multi-layered core member consists of a plurality of flat metal foil sheets and a plurality of corrugated metal foil sheets arranged alternately and bonded to each other for preventing the core member from telescoping in the direction of exhaust gas flow, especially, during high-load engine operation.
Claims1
A method for manufacturing an electrically heatable catalytic converter comprising the steps of:
- providing an electrode;
- providing a plurality of flat metal foil sheets and a plurality of corrugated metal foil sheets which are arranged alternately;
- interposing a sheet of paper between one of the flat metal foil sheets and adjacent corrugated metal foil sheet so as to form a plurality of multi-layered members separated by the paper each multi-layered member including at least two of the flat metal foil sheets and at least two of the corrugated metal foil sheets;
- winding said multi-layered members around the electrode;
- applying a voltage across the wound multi-layered members to weld the flat metal foil sheets and the corrugated metal foil sheets of each of the multi-layered members together and
- disposing the welded multi-layered members within a cylindrical converter casing.
Dependencies are inferred from the claim text.