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EP0121175B1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Helically wound conical shape metal strip catalyst supporting matrix for internal-combustion engines

Assignee: Interatom Internationale Atomreaktorbau GmbH
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Filing: 1984-03-19
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Granted: 1987-01-21
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Expires: 2004-03-19
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Abstract

Abstract 1. A catalyst support body for internal combustion engines consisting of a supporting matrix with flat (8) and/or corrugated (7) sheet-metal strips which are spirally and, at least in sub-regions, helically wound and are connected to one another and to the inner side of a casing (20) by welding, soldering or sticking, characterized in that the ratio of the width (b) of the sheet-metal strips (7, 8) to the slope(s) of the helix or the diameter of the supporting matrix is so selected that no cross-section through the winding cuts all the sheet-metal strip layers, i.e. the axial spread (h) of the supporting matrix, which is in the form of a hollow cone, is greater than twice the width (b) of the sheet-metal strips (7, 8).

Inventors

  • 👤 Theodor Dipl.-Ing. Cyron

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 03:06
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2892; F01N13/00; F01N13/009; F01N13/0097; F01N3/2803; F01N3/2807; F01N3/281; F01N3/2821; F01N2330/00; F01N2330/02

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 126 words
A catalyst support body for internal combustion engines consisting of a supporting matrix with flat (8) and/or corrugated (7) sheet-metal strips which are spirally and, at least in subregions, helically wound and are connected to one another and to the inner side of a casing (20) by welding, soldering or sticking, characterised in that the ratio of the width (b) of the sheet-metal strips (7, 8) to the slope(s) of the helix or the diameter of the supporting matrix is so selected that no cross-section through the winding cuts all the sheet-metal strip layers, i. e. the axial spread (h) of the supporting matrix, which is in the form of a hollow cone, is greater than twice the width (b) of the sheet-metal strips (7, 8).
Claim 2
Dependent Claim 126 words
A catalyst support body for internal combustion engines consisting of a supporting matrix with flat (8) and/or corrugated (7) sheet-metal strips which are spirally and, at least in subregions, helically wound and are connected to one another and to the inner side of a casing (20) by welding, soldering or sticking, characterised in that the ratio of the width (b) of the sheet-metal strips (7, 8) to the slope(s) of the helix or the diameter of the supporting matrix is so selected that no cross-section through the winding cuts all the sheet-metal strip layers, i. e. the axial spread (h) of the supporting matrix, which is in the form of a hollow cone, is greater than twice the width (b) of the sheet-metal strips (7, 8).
Claim 3
Dependent Claim 25 words
A catalyst support body as claimed in Claim 1, characterised in that the supporting matrix is in the form of a truncated hollow cone (9).
Claim 4
Dependent Claim 21 words
A catalyst support body as claimed in Claim 1, characterised in that in longitudinal section, the supporting matrix is W-shaped (10).
Claim 5
Dependent Claim 36 words
A catalyst support body as claimed in Claim 1, 2 or 3, characterised in that the support body consists of a plurality of partial matrix components which are axially arranged one behind another at spaced intervals.

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