EP1427920A1 - Catalyseur pour purification de gaz d'echappement et son procede de fabrication - Google Patents
Catalyseur pour purification de gaz d'echappement et son procede de fabricationInfo
- Publication number
- EP1427920A1 EP1427920A1 EP02783179A EP02783179A EP1427920A1 EP 1427920 A1 EP1427920 A1 EP 1427920A1 EP 02783179 A EP02783179 A EP 02783179A EP 02783179 A EP02783179 A EP 02783179A EP 1427920 A1 EP1427920 A1 EP 1427920A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter element
- catalyst
- zone
- metal casing
- constricted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
- F01N2350/02—Fitting ceramic monoliths in a metallic housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/02—Fitting monolithic blocks into the housing
Definitions
- the invention relates to a catalyst for exhaust gas filtration and its manufacturing process, catalyst comprising at least one filter element contained in a tubular metallic envelope shrunk or expanded around said filter element.
- the present invention will find its application in the field of exhaust systems for internal combustion engines, in particular for motor vehicles.
- Such a catalyst comprises a filtering substrate, often in the form of a monolithic ceramic part and of a determined section to which a metal casing of tubular shape is adapted.
- the filter element Two methods are currently used to immobilize this part, hereinafter called the filter element, inside such a metallic tubular envelope, one consisting in constricting the latter on this element and thus creating a fit. tight, while the second solution consists, on the contrary, in using a tubular metal casing of initial section 30 smaller than that of the filter element, then, after expansion, forcibly inserting the latter.
- document EP-A-0.982.480 refers to the solution consisting in shrinking the tubular metallic envelope inside which one or more filter elements have been placed beforehand. These are wrapped in a mantle of a material capable of being compressed while being capable of thermally insulating them from said envelope.
- document US-5 104 627 also discloses an exhaust gas filtration device comprising a tubular metal casing open on either side, inside which they are fixed by brazing. two honeycomb filtering parts.
- this tubular casing has, moreover, an enlarged section in the portion extending between the brazing zones, so as to preserve a vacuum at the periphery of these two filtering parts, a vacuum which, in combination with the 'space preserved between said parts, allow the elements to expand freely relative to each other under the effect of heat.
- the tubular metallic envelope comprises an area, qualified as an intermediary in the rest of the description, which is not restricted or, as the case may be, expanded during the installation of this or these filter elements.
- this non-constricted or unexpanded intermediate zone preferably corresponds to the inter-filtering zone comprising, moreover, at least one opening for the reception of a measurement probe.
- the invention relates to a catalyst for filtering exhaust gases, comprising at least one filter element contained in a tubular metal envelope shrunk or expanded around said filter element, characterized in that said tubular metal envelope comprises, over its length constricted or expanded at least one intermediate zone, respectively, uncapped or unexpanded.
- the invention also relates to a process for the manufacture of such a catalyst, characterized in that, in the expanded or constricted length of the tubular metal casing, one preserves a intermediate peripheral zone not subjected to the expansion or shrinking operation.
- Figure 1 is a schematic sectional representation of a catalyst according to the invention, the tubular metal casing is shrunk on a filter element;
- FIG. 2 is a representation similar to FIG. 1, the catalyst comprising two filtering elements succeeding each other inside the tubular metallic envelope while preserving between them a space to the right of which said envelope is not constricted;
- Figure 3 is a representation similar to Figure 2 knowing that for the reception of a filter element there has been expansion of the tubular metal casing, except in an intermediate zone lying between two of these elements;
- Figure 4 is a schematic, partial and perspective view of a catalyst according to the invention, the metal tubular envelope has undergone expansion for the reception of a filter element.
- the present invention relates to a catalyst 1 for the exhaust gas ration, comprising at least one filter element 2, 2A contained in a tubular metal casing 3.
- a catalyst 1 for the exhaust gas ration comprising at least one filter element 2, 2A contained in a tubular metal casing 3. This is, as the case may be, shrunk, as shown in Figures 1 and 2, or, on the contrary and as visible in Figures 3 and 4, expanded around this or these filter elements 2, 2A.
- the latter comprises, at least in its length 6 constricted or, as the case may be, expanded at least one intermediate zone 7 which is not constricted or, respectively, not expanded.
- this intermediate zone 7 defines a peripheral belt 8 in the form of a boss or a groove at the level of this tubular metallic envelope 3, having the consequence of stiffening the latter.
- tubular metal casing 3 is only shrunk in its parts extending on either side of this or these intermediate zones or zones 7 to immobilize, inside the filter element (s) 2, 2A. In the event of expansion, this again occurs only on either side of this or these zones 7 defined at the level of the tubular metallic envelope 3.
- At least one such intermediate zone 7, not constricted or, as the case may be, unexpanded, can be preserved upstream or downstream of a filter element 2, 2A, this in order to facilitate the installation, by upstream or downstream of this filter element 2, 2A, at least one temperature and / or pressure and / or oxygen content measurement probe as will be explained further in this description.
- At least one intermediate zone (7) can be preserved in the portion (6A) of the tubular metallic envelope (3) intended to extend over the above the filter element (s) (2, 2A).
- FIGS. 2 and 3 there is shown a catalyst 1 comprising several successive filter elements 2, 2A, with a spacing 9, inside the tubular metal envelope 3. Under these conditions, it is generally inserted, between these filter elements 2, 2A, a probe for measuring pressure and / or oxygen content and / or temperature. Such a probe is engaged in this catalyst 1 through an opening 10 of adjusted section made at the level of said envelope 3, at the height of this spacing 9.
- At least one zone 7 intermediate of the envelope 3, not constricted or unexpanded, is located at the right of this spacing 9.
- this or these openings 10 are produced at the level of this envelope 3 before the shrinking or, as the case may be, expansion operation occurs, preferably at the very moment when said envelope 3 is designed.
- the present invention comes to respond advantageously to the problem posed.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Filtering Materials (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0112226A FR2830048B1 (fr) | 2001-09-21 | 2001-09-21 | Catalyseur pour filtration de gaz d'echappement et son procede de fabrication |
| FR0112226 | 2001-09-21 | ||
| PCT/FR2002/003203 WO2003027455A1 (fr) | 2001-09-21 | 2002-09-19 | Catalyseur pour purification de gaz d'echappement et son procede de fabrication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1427920A1 true EP1427920A1 (fr) | 2004-06-16 |
| EP1427920B1 EP1427920B1 (fr) | 2008-11-12 |
Family
ID=8867523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02783179A Expired - Lifetime EP1427920B1 (fr) | 2001-09-21 | 2002-09-19 | Catalyseur pour purification de gaz d'echappement et son procede de fabrication |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1427920B1 (fr) |
| AT (1) | ATE414217T1 (fr) |
| DE (1) | DE60229862D1 (fr) |
| FR (1) | FR2830048B1 (fr) |
| WO (1) | WO2003027455A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008046527B4 (de) † | 2008-09-10 | 2021-09-16 | Faurecia Emissions Control Technologies, Germany Gmbh | Verfahren zum Herstellen einer Abgas führenden Vorrichtung sowie Werkzeug hierfür |
| US9833831B2 (en) | 2015-05-11 | 2017-12-05 | Faurecia Emissions Control Technologies, Usa, Llc | Apparatus for sizing a component shell having at least two different cross-sections |
| US9752476B2 (en) | 2015-05-11 | 2017-09-05 | Faurecia Emissions Control Technologies, Usa, Llc | Apparatus for sizing a component shell having at least two different cross-sections |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3912459A (en) * | 1972-12-13 | 1975-10-14 | Fram Corp | Catalytic converter |
| US5104627A (en) * | 1988-12-19 | 1992-04-14 | Usui Kokusai Sangyo Kabushiki Kaisha | Exhaust gas cleaning apparatus |
| US5119551A (en) * | 1989-02-06 | 1992-06-09 | Tennessee Gas Pipeline Company | Method of making a catalytic converter with one piece housing |
| DE4433974C1 (de) | 1994-09-23 | 1996-03-28 | Eberspaecher J | Verfahren zur Herstellung von Katalysatoren |
| DE29708861U1 (de) * | 1997-05-20 | 1997-07-17 | Emitec Gesellschaft für Emissionstechnologie mbH, 53797 Lohmar | Katalysator-Trägerkörper mit Außensicke |
| US6591497B2 (en) | 1998-08-27 | 2003-07-15 | Delphi Technologies, Inc. | Method of making converter housing size based upon substrate size |
-
2001
- 2001-09-21 FR FR0112226A patent/FR2830048B1/fr not_active Expired - Lifetime
-
2002
- 2002-09-19 AT AT02783179T patent/ATE414217T1/de not_active IP Right Cessation
- 2002-09-19 EP EP02783179A patent/EP1427920B1/fr not_active Expired - Lifetime
- 2002-09-19 DE DE60229862T patent/DE60229862D1/de not_active Expired - Lifetime
- 2002-09-19 WO PCT/FR2002/003203 patent/WO2003027455A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03027455A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2830048B1 (fr) | 2004-04-30 |
| DE60229862D1 (de) | 2008-12-24 |
| ATE414217T1 (de) | 2008-11-15 |
| WO2003027455A1 (fr) | 2003-04-03 |
| FR2830048A1 (fr) | 2003-03-28 |
| EP1427920B1 (fr) | 2008-11-12 |
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