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US 2008/0175762 A1Published application
Catalytic converter optimization
AssigneeGM Global Technology Operations LLC
InventorFrank Ament
Life of this patent
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Abstract
A catalytic converter includes an inlet. A first sub-section of substrate is located a first distance from the inlet that includes a first catalyst coating having a first density. A second sub-section of substrate is located a second distance from the inlet that includes a second catalyst coating having a second density. The second distance is greater than the first distance and the second density is greater than the first density.
Claims20
A catalytic converter, comprising:
- an inlet;
- a first sub-section of substrate located a first distance from the inlet that includes a first catalyst coating having a first density;
- and
- a second sub-section of substrate located a second distance from the inlet that includes a second catalyst coating having a second density wherein the second distance is greater than the first distance and the second density is greater than the first density.
1 more element
A method of forming a catalytic converter, comprising:
- dividing at least one substrate structure into a plurality of sub-sections;
- coating a first sub-section of the plurality of sub-sections with a first density of catalysts;
- coating a second sub-section of the plurality of sub-sections with a second density of catalysts greater than the first density;
- providing the first sub-section within a first distance from an inlet of the catalytic converter;
- and
- providing the second sub-section within a second distance greater than the first distance from the inlet.
3 more elements
Dependencies are inferred from the claim text.