AT392750B - METHOD FOR PRODUCING AND REINFORCING AN EXHAUST CATALYST HONEYCOMB - Google Patents
METHOD FOR PRODUCING AND REINFORCING AN EXHAUST CATALYST HONEYCOMB Download PDFInfo
- Publication number
- AT392750B AT392750B AT2747/88A AT274788A AT392750B AT 392750 B AT392750 B AT 392750B AT 2747/88 A AT2747/88 A AT 2747/88A AT 274788 A AT274788 A AT 274788A AT 392750 B AT392750 B AT 392750B
- Authority
- AT
- Austria
- Prior art keywords
- honeycomb body
- support
- corrugated
- honeycomb
- planar
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 230000003014 reinforcing effect Effects 0.000 title description 3
- 238000000034 method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims 1
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 238000003466 welding Methods 0.000 description 4
- 238000005476 soldering Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/04—Punching, slitting or perforating
-
- 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
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/024—Honeycomb
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/18—Exhaust treating devices having provisions not otherwise provided for for improving rigidity, e.g. by wings, ribs
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
- F01N2330/04—Methods of manufacturing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
AT 392 750 BAT 392 750 B
Die Erfindung betrifft ein Verfahren zur Herstellung und Verstärkung eines zur Abgasreinigung dienenden Katalysatorwabenkörpers durch Bildung eines spiraligen Wabenkörpers aus abwechselnd übereinander angeordnetem gewellten und planen Folienband.The invention relates to a method for producing and reinforcing a catalytic converter honeycomb body used for exhaust gas purification by forming a spiral honeycomb body from corrugated and planar foil strip arranged alternately one above the other.
Einen solchen Wabenkörper kennt man bereits u. a. von der GB-PS 2 069 364 her. Gemäß dem in dieser Patentschrift beschriebenen Verfahren wird aus unbeschichteten Folienbändem zuerst ein Wabenkörper hergestellt und dann werden an beiden Stirnseiten oder an der einen Stirnseite dieses Körpers eine oder mehrere Schweißnähte gelegt, die verhindern sollen, daß sich die gewundenen Folienbänder axial zueinander bewegen. Bei diesem Verfahren kann der Wabenkörper erst nach erfolgtem Schweißen mit einer Stützmaterialschicht und mit Katalysatorstoff beschichtet werden, da das Stützmaterial die elektrische Leitfähigkeit herabsetzt und somit den Stromfluß beim Schweißen ver- bzw. behindert. Wird das Stützmaterial in den fertigen Wäbenkörper eingebracht, so verteilt es sich dort nicht gleichmäßig, sondern sammelt sich in den von den Folienverbindungsstellen gebildeten Nischen und zieht den eigentlichen katalytisch aktiven Stoff an sich, so daß dieser nicht effektiv genutzt wird mit der Folge von Kostenanstieg und Leistungsverringerung.Such a honeycomb body is already known u. a. from GB-PS 2 069 364. According to the method described in this patent, a honeycomb body is first produced from uncoated film strips and then one or more weld seams are placed on both end faces or on one end face of this body, which are intended to prevent the winding film strips from moving axially to one another. With this method, the honeycomb body can only be coated with a support material layer and with catalyst material after welding, since the support material reduces the electrical conductivity and thus prevents or impedes the flow of current during welding. If the support material is introduced into the finished honeycomb body, it does not distribute itself evenly there, but collects in the niches formed by the film connection points and pulls the actual catalytically active substance to itself, so that it is not used effectively with the result of cost increases and Performance reduction.
In der DE-PS 29 24 592 ist ein Verfahren zur Herstellung eines Katalysatorwabenkörpers beschrieben, bei dem unbeschichtetes gewelltes und planes Folienband durch Verlöten miteinander verbunden wird. Dieses Verfahren hat den Nachteil, daß beim Löten hohe Temperaturen zur Anwendung gebracht werden müssen, was zu Strukturschwächung und Verschlechterung der Oberfläche führt Löten ist als Verfahren eine teure Maßnahme und begrenzt die in Frage kommenden Wabenwerkstoffe auf lötbare Metalle. Derartige Werkstoffe sind jedoch nicht unbedingt zu den besten Katalysatorwaben-Werkstoffen zu rechnen. Auch bei diesem Verfahren kann das Beschichten des Wabenkörpers mit einer Stützmaterialschicht und mit katalytisch aktivem Stoff erst nach dem gegenseitigen Verbinden der Folien erfolgen.DE-PS 29 24 592 describes a method for producing a catalyst honeycomb body, in which uncoated corrugated and flat film strip is connected to one another by soldering. This method has the disadvantage that high temperatures have to be used for soldering, which leads to structural weakening and deterioration of the surface. As a method, soldering is an expensive measure and limits the honeycomb materials in question to solderable metals. However, such materials are not necessarily the best catalyst honeycomb materials. In this method, too, the honeycomb body can only be coated with a support material layer and with catalytically active material after the foils have been joined together.
In der FI-OS 861 801 ist ein Verfahren zur Herstellung und Verstärkung eines Katalysatorwabenkörpers beschrieben. Bei diesem Verfahren wird im voraus sowohl mit einer Stützmaterialschicht als auch mit einer Katalysatorschicht versehenes gewelltes und planes Folienband an einer Zentralachse befestigt, die aus einer dünnen Stange besteht und um die herum ein Wabenkörper gewünschter Größe gebüdet wird, wonach an den Achsenden stimseitige Stützen so befestigt werden, daß sie etwas in den Körper versenkt sind und ein axiales Bewegen der Folien verhindern. Bei diesem Verfahren verursacht die (das) im Wabenkörper verbleibende Zentralachse oder -blech zusätzliches Gewicht und außerdem wird im Querschnitt die offene Fläche des Katalysatorwabenkörpers durch die Zentralachse mit ihren stimseitigen Stützen etwas verringert.FI-OS 861 801 describes a method for producing and reinforcing a catalyst honeycomb body. In this method, a corrugated and flat film strip provided with a support material layer as well as with a catalyst layer is attached in advance to a central axis, which consists of a thin rod and around which a honeycomb body of desired size is bonded, after which end-side supports are attached to the ends of the axis be that they are sunk somewhat into the body and prevent the films from moving axially. In this method, the central axis or sheet remaining in the honeycomb body causes additional weight and, in addition, the open area of the catalyst honeycomb body is somewhat reduced in cross section by the central axis with its end-side supports.
Aus der DE-OS 27 54 776 ist ein Verfahren zum Herstellen eines wabenartigen Gebüdes aus einem glatten und einem gewellten Blechstreifen bekannt, das eine Vielzahl von örtlich getrennten Berührungsbereichen hat und eine die großen Seitenflächen des Bleches schneidende Stirnfläche aufweist, an der die Berührungsbereiche durch Schweißstellen miteinander verbunden sind. Wegen der Schweißarbeiten am fertigen Wickel, bevorzugt durch einen fokussierten Energiestrahl, z. B. Elektronenstrahl, können die Metallbänder, insbesondere Stahlbänder, nicht vorausgehend mit Katalysatormaterial beschichtet werden. Für das Aufwickeln der Metallbänder zum wabenartigen Gebilde wird ein hohler Wickeldom verwendet, wobei in der Mitte des Gebüdes ein verhältnismäßig großer Durchlaßquerschnitt frei bleibt, der noch in irgendeiner Weise verschlossen werden muß.From DE-OS 27 54 776 a method for producing a honeycomb structure from a smooth and a corrugated sheet metal strip is known, which has a large number of spatially separated contact areas and has an end face intersecting the large side surfaces of the sheet metal, on which the contact areas by welds are interconnected. Because of the welding work on the finished winding, preferably by a focused energy beam, e.g. B. electron beam, the metal strips, especially steel strips, cannot be coated beforehand with catalyst material. A hollow winding dome is used for winding up the metal strips to form a honeycomb structure, with a relatively large passage cross section remaining free in the middle of the structure, which still has to be closed in some way.
Die GB-PS 2 072 064 und die DE-OS 26 36 672 betreffen die Herstellung von Substratkörpem für Katalysatorbauteüe, wobei im ersteren Fall ein im Umriß ovaler Wickel aus glatten und gewellten Metallbändem auf eine beispielsweise aus rostfreiem Stahl bestehende Platte aufgebracht wird.GB-PS 2 072 064 and DE-OS 26 36 672 relate to the production of substrate bodies for catalytic converter parts, in the former case an oval-shaped wrap made of smooth and corrugated metal strips is applied to a plate made, for example, of stainless steel.
Die inneren Enden der Bänder können durch Punktschweißung an der Platte angeheftet sein; in ähnlicher Weise werden die äußeren Enden an der darunter befindlichen Wicklungslage festgelegt. Eine durchgehende Lagefixierung aller Bandwindungen ist nicht vorgesehen.The inner ends of the tapes can be spot welded to the plate; in a similar manner, the outer ends are fixed to the winding layer underneath. A continuous fixation of all tape turns is not provided.
Im letzteren Fall (DE-OS 26 36 672) ist kein besonderer Wickeldom oder -kern für die Metallbänder ersichtlich. Als wesentliche Maßnahme ist hiebei hervorgehoben, daß von den Bändern mit einem allgemein ebenen Bereich bzw. einem Bereich von ersten Wellungen ein Bereich oder jeder Bereich mit zweiten Wellungen ausgebüdet ist, die kleiner als die ersten Wellungen sind, wodurch eine große Oberfläche erzielbar ist. Eine Verstärkung des Körpers oder die Art der Festlegung der Bandenden sind nicht erwähntIn the latter case (DE-OS 26 36 672) no special winding dome or core can be seen for the metal strips. As an essential measure, it is emphasized that from the strips with a generally flat area or a area of first corrugations, an area or each area is covered with second corrugations that are smaller than the first corrugations, whereby a large surface area can be achieved. A reinforcement of the body or the way of fixing the band ends are not mentioned
Mit der vorliegenden Erfindung soll ein zur Herstellung und Verstärkung eines Katalysatorwabenkörpers dienendes Verfahren geschaffen werden, das frei von den Mängeln der bereits bekannten Verfahren ist Erreicht wird dies gemäß Erfindung dadurch, daß das im voraus sowohl mit Stützmaterial als auch mit Katalysator beschichtete gewellte und plane Folienband einen Wabenkörper ohne Zentralachse oder -blech büden und daß das Auflösen des Wäbenkörpers ein Aneinanderreiben der Folienbänder durch wenigstens eine durch den Wäbenkörper hindurchgeführte Stütze verhindert werden. So entsteht ein formbeständiger, starrer Körper, ohne daß an irgendeiner Stelle des Körpers, beispielsweise durch Schweißarbeiten, die Gefahr einer unerwünschten Überhitzung besteht.The present invention is intended to provide a process for the production and reinforcement of a catalyst honeycomb body which is free from the shortcomings of the processes which are already known. This is achieved according to the invention in that the corrugated and flat film strip coated in advance with both support material and with catalyst load a honeycomb body without a central axis or sheet and that the dissolving of the honeycomb body prevents the film strips from rubbing against one another by at least one support guided through the honeycomb body. This creates a dimensionally stable, rigid body without the risk of undesired overheating at any point on the body, for example by welding work.
Wenn der Wabenkörper gemäß einer Ausführungsform der Erfindung im Querschnitt im wesentlichen ovale Form hat, läßt sich ein Hohlraum in seinem Zentrum klein halten oder gänzlich vermeiden.If, according to one embodiment of the invention, the honeycomb body has an essentially oval shape in cross section, a cavity in its center can be kept small or avoided entirely.
Das Durchstoßen der Stütze durch den Wabenkörper kann insbesondere durch Schlagen, gegebenenfalls auch durch Drücken oder durch Schießen erfolgen. Gemäß einer Ausführungsform der Erfindung besteht die Möglichkeit, für die Stütze ein Loch durch den Wabenkörper zu bohren, in das man die Stütze dann einsetzt.The support can be pierced through the honeycomb body, in particular by hitting, if necessary also by pressing or by shooting. According to one embodiment of the invention, there is the possibility of drilling a hole for the support through the honeycomb body, in which the support is then inserted.
Zweckmäßig ist die Länge der durch den Wabenkörper hindurchgeführten Stütze 1 bis 10 mm größer als der -2-The length of the support passed through the honeycomb body is expediently 1 to 10 mm longer than the -2-
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI875045A FI78161C (en) | 1987-11-16 | 1987-11-16 | FOERFARANDE FOER FRAMSTAELLNING OCH FOERSTAERKNING AV EN KATALYTCELLSTRUKTUR ANVAENDBAR FOER RENING AV AVGASER. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ATA274788A ATA274788A (en) | 1990-11-15 |
| AT392750B true AT392750B (en) | 1991-05-27 |
Family
ID=8525420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT2747/88A AT392750B (en) | 1987-11-16 | 1988-11-09 | METHOD FOR PRODUCING AND REINFORCING AN EXHAUST CATALYST HONEYCOMB |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPH01155948A (en) |
| KR (1) | KR890008432A (en) |
| AT (1) | AT392750B (en) |
| AU (1) | AU606226B2 (en) |
| BE (1) | BE1002482A3 (en) |
| BR (1) | BR8805954A (en) |
| CA (1) | CA1323752C (en) |
| CH (1) | CH675750A5 (en) |
| CS (1) | CS277579B6 (en) |
| DD (1) | DD283667A5 (en) |
| DE (1) | DE3838295C2 (en) |
| ES (1) | ES2011406A6 (en) |
| FI (1) | FI78161C (en) |
| FR (1) | FR2623244B1 (en) |
| GB (1) | GB2212414B (en) |
| IT (1) | IT8822586A0 (en) |
| NL (1) | NL8802793A (en) |
| PL (1) | PL159280B1 (en) |
| RU (1) | RU1837962C (en) |
| SE (1) | SE468323B (en) |
| YU (1) | YU207488A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5846495A (en) * | 1995-07-12 | 1998-12-08 | Engelhard Corporation | Structure for converter body |
| DE102004024685A1 (en) | 2004-05-19 | 2005-12-15 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Catalyst carrier body for a close-coupled catalytic converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2636672A1 (en) * | 1975-08-20 | 1977-03-03 | Atomic Energy Authority Uk | METHOD OF MANUFACTURING BODIES THROUGH CHANNELS |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB753658A (en) * | 1953-06-19 | 1956-07-25 | Havilland Engine Co Ltd | Metal catalyst packs |
| DE2733640C3 (en) * | 1977-07-26 | 1981-04-30 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Matrix for a catalytic reactor for exhaust gas cleaning in internal combustion engines |
| DE2746182A1 (en) * | 1977-10-14 | 1979-04-19 | Volkswagenwerk Ag | Cylindrical catalyst carrier retention - using transverse hole and welded bolt to join carrier to casing |
| US4201947A (en) * | 1978-02-10 | 1980-05-06 | Rca Corporation | Long-tailed-pair connections of MOSFET's operated in sub-threshold region |
| DE2924592C2 (en) * | 1979-06-19 | 1983-05-26 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Method for producing a carrier matrix for a catalytic reactor for exhaust gas purification in internal combustion engines of motor vehicles |
| GB2069364B (en) * | 1980-02-19 | 1984-05-23 | Johnson Matthey Co Ltd | Exhaust gas purification catalyst units |
| DE3515681A1 (en) * | 1985-05-02 | 1986-11-06 | Üründül, Celâl, 6800 Mannheim | Metal support in a single-foil design |
| US4598063A (en) * | 1985-08-09 | 1986-07-01 | Retallick William B | Spiral catalyst support and method of making it |
| JPS62228616A (en) * | 1986-03-29 | 1987-10-07 | Nippon Kinzoku Kk | Catalytic cartridge for exhaust gas emission control |
| FI74523C (en) * | 1986-04-29 | 1988-02-08 | Kemira Oy | Preparation and fortification process of a catalytic cell intended for purification of exhaust gas. |
| ATE45410T1 (en) * | 1986-05-12 | 1989-08-15 | Interatom | METALLIC HONEYCOMB BODY, IN PARTICULAR CATALYST CARRIER BODY, WITH SUPPORTING WALL AND PROCESS FOR ITS MANUFACTURE. |
| JPS6336842A (en) * | 1986-07-29 | 1988-02-17 | Nippon Radiator Co Ltd | Metallic honeycomb carrier and its preparation |
| JPS63185456A (en) * | 1987-01-26 | 1988-08-01 | Calsonic Corp | Production of metal honeycomb carrier |
| JPS6463045A (en) * | 1987-09-03 | 1989-03-09 | Toyota Motor Corp | Metallic carrier |
-
1987
- 1987-11-16 FI FI875045A patent/FI78161C/en not_active IP Right Cessation
-
1988
- 1988-11-02 AU AU24600/88A patent/AU606226B2/en not_active Ceased
- 1988-11-08 YU YU02074/88A patent/YU207488A/en unknown
- 1988-11-09 AT AT2747/88A patent/AT392750B/en not_active IP Right Cessation
- 1988-11-10 GB GB8826363A patent/GB2212414B/en not_active Expired - Fee Related
- 1988-11-11 IT IT8822586A patent/IT8822586A0/en unknown
- 1988-11-11 CH CH4183/88A patent/CH675750A5/de not_active IP Right Cessation
- 1988-11-11 DE DE3838295A patent/DE3838295C2/en not_active Expired - Fee Related
- 1988-11-14 BE BE8801288A patent/BE1002482A3/en not_active IP Right Cessation
- 1988-11-14 NL NL8802793A patent/NL8802793A/en not_active Application Discontinuation
- 1988-11-14 BR BR888805954A patent/BR8805954A/en not_active IP Right Cessation
- 1988-11-15 CA CA000583107A patent/CA1323752C/en not_active Expired - Fee Related
- 1988-11-15 ES ES8803469A patent/ES2011406A6/en not_active Expired - Lifetime
- 1988-11-15 KR KR1019880015035A patent/KR890008432A/en not_active Application Discontinuation
- 1988-11-15 DD DD88321811A patent/DD283667A5/en unknown
- 1988-11-15 SE SE8804108A patent/SE468323B/en not_active IP Right Cessation
- 1988-11-15 FR FR8814821A patent/FR2623244B1/en not_active Expired - Fee Related
- 1988-11-15 RU SU884356891A patent/RU1837962C/en active
- 1988-11-16 PL PL88275834A patent/PL159280B1/en unknown
- 1988-11-16 CS CS887520A patent/CS277579B6/en not_active IP Right Cessation
- 1988-11-16 JP JP63287876A patent/JPH01155948A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2636672A1 (en) * | 1975-08-20 | 1977-03-03 | Atomic Energy Authority Uk | METHOD OF MANUFACTURING BODIES THROUGH CHANNELS |
Also Published As
| Publication number | Publication date |
|---|---|
| FI78161B (en) | 1989-02-28 |
| AU2460088A (en) | 1989-05-25 |
| CS752088A3 (en) | 1992-08-12 |
| FR2623244A1 (en) | 1989-05-19 |
| FI78161C (en) | 1989-06-12 |
| FI875045A0 (en) | 1987-11-16 |
| BE1002482A3 (en) | 1991-02-26 |
| DE3838295C2 (en) | 1994-05-05 |
| SE8804108D0 (en) | 1988-11-15 |
| YU207488A (en) | 1990-04-30 |
| DD283667A5 (en) | 1990-10-17 |
| KR890008432A (en) | 1989-07-10 |
| BR8805954A (en) | 1989-08-08 |
| GB8826363D0 (en) | 1988-12-14 |
| GB2212414B (en) | 1991-09-25 |
| AU606226B2 (en) | 1991-01-31 |
| SE8804108L (en) | 1989-05-17 |
| NL8802793A (en) | 1989-06-16 |
| JPH01155948A (en) | 1989-06-19 |
| SE468323B (en) | 1992-12-14 |
| CH675750A5 (en) | 1990-10-31 |
| CS277579B6 (en) | 1993-03-17 |
| DE3838295A1 (en) | 1989-05-24 |
| GB2212414A (en) | 1989-07-26 |
| ES2011406A6 (en) | 1990-01-01 |
| PL159280B1 (en) | 1992-12-31 |
| FR2623244B1 (en) | 1994-04-29 |
| PL275834A1 (en) | 1989-07-24 |
| CA1323752C (en) | 1993-11-02 |
| RU1837962C (en) | 1993-08-30 |
| IT8822586A0 (en) | 1988-11-11 |
| ATA274788A (en) | 1990-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ELJ | Ceased due to non-payment of the annual fee |