Non-Cylindrical Catalytic-Converter Carrier Element and Tool, and Method for Manufacturing it
First Claim
1. A catalytic-converter carrier element, comprising:
- a metallic honeycomb element having;
a plurality of smooth layers and corrugated layers with layer ends forming an external shape of said honeycomb element, said smooth and corrugated layers defining cells extending through said honeycomb element;
a first end side with a first surface area; and
a second end side with a second surface area, said first end side and said second end side having, in absolute terms, an identical surface area, but being non-congruent.
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Abstract
A method for the production of a converter-carrier body having a metallic honeycomb body made of a plurality of metal layers, especially smooth layers and corrugated layers, the layers having layer ends, such that an outer shape of the honeycomb body is formed by the layer ends. At least one stack is produced having several alternately disposed metal layers that are structured such that channels are formed for a fluid to flow through. The at least one stack is transformed into a honeycomb body having a cylindrical form. The honeycomb body is deformed from the cylindrical form so that an outer shape that deviates from the cylindrical form is produced. Additionally, the invention relates to a corresponding converter-carrier body and a tool for the production thereof.
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Citations
8 Claims
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1. A catalytic-converter carrier element, comprising:
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a metallic honeycomb element having; a plurality of smooth layers and corrugated layers with layer ends forming an external shape of said honeycomb element, said smooth and corrugated layers defining cells extending through said honeycomb element; a first end side with a first surface area; and a second end side with a second surface area, said first end side and said second end side having, in absolute terms, an identical surface area, but being non-congruent. - View Dependent Claims (2)
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3. A catalytic-converter carrier element manufactured by manufacturing at least one stack with a plurality of alternately disposed sheet metal layers having layer ends, shaping the at least one stack to form a metallic honeycomb element with a cylindrical shape, the cylindrical shape of the honeycomb element being formed by the layer ends, the sheet metal layers being structured to form cells through which a fluid can flow, and deforming the honeycomb element to produce an external shape different from the cylindrical shape, the catalytic converter carrier element comprising:
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a metallic honeycomb element having; a plurality of smooth layers and corrugated layers with layer ends forming an external shape of said honeycomb element, said smooth and corrugated layers defining cells extending through said honeycomb element; a first end side with a first surface area; and a second end side with a second surface area, said first end side and said second end side having, in absolute terms, an identical surface area, but being non-congruent. - View Dependent Claims (4)
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5. A catalytic-converter carrier element, comprising:
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a metallic honeycomb element having; a stack of alternately disposed smooth sheet metal layers and corrugated sheet metal layers, said smooth and corrugated sheet metal layers having layer ends forming an external shape of said honeycomb element, said smooth and corrugated layers defining cells extending through said honeycomb element through which a fluid can flow; a first end side being substantially circular and having a first surface area; and a second end side having a second surface area equal to said first surface area but non-congruent thereto. - View Dependent Claims (6)
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7. A tool for manufacturing a metallic honeycomb element having an external shape to be fabricated for a catalytic-converter carrier element, comprising:
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a tool body having an interior cavity; said interior cavity; defining an input orifice having a substantially circular input cross-section; and defining an output orifice having an output cross-section corresponding to the external shape of the element to be fabricated; and defining a channel through which the element is guided through said tool from said input cross-section to said output cross-section to convert the element from a cylindrical shape into an external shape different from the cylindrical shape. - View Dependent Claims (8)
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Specification