Title: System for catalytic reduction of NO.sub.x emanating from an internal combustion engine

Abstract: A system for reducing NO.sub.x gases found in the exhaust stream of the internal combustion engine is provided which includes an internal combustion engine having associated therewith a means for supplying fuel and oxygen to the engine, a manifold system for directing or channeling the exhaust gases from the engine, and a NO.sub.x reducing catalyst assembly communicating with the manifold which includes a housing having a NO.sub.x reducing catalytic structure of apertured thin metal foil positioned therein which includes, in one aspect, a plurality of sheets of expanded metal foil wherein at least one sheet of expanded metal foil has at least some openings therein which are of a different size than at least some openings in a juxtapositioned sheet of expanded metal foil. In another aspect, it includes a sheet of expanded metal foil having at least some openings of different sizes.

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Inventors: Fedor, Robert Joseph (Westlake, OH, US)

Application Number: 651628
Filing Date: 1976-01-23
Publication_date: 1976-12-21
Assignee: Gould Inc. (Rolling Meadows, IL)
Primary Class(es): 422/180 60/301, 502/200, 502/527.21
Other Classes:
US Patent Ref:

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Other Refs:
Primary Examiner: Richman, Barry S.
Assistant Examiner:
Attorney: Sachs; Edward E.