EP0121174A1 - Catalyst supporting matrix with expansion slots for internal-combustion engines - Google Patents
Catalyst supporting matrix with expansion slots for internal-combustion engines Download PDFInfo
- Publication number
- EP0121174A1 EP0121174A1 EP84103015A EP84103015A EP0121174A1 EP 0121174 A1 EP0121174 A1 EP 0121174A1 EP 84103015 A EP84103015 A EP 84103015A EP 84103015 A EP84103015 A EP 84103015A EP 0121174 A1 EP0121174 A1 EP 0121174A1
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- European Patent Office
- Prior art keywords
- slots
- catalyst carrier
- carrier body
- catalyst
- matrix
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- 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.)
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Classifications
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- 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
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- 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
Definitions
- the present invention relates to a metallic carrier body for coatings of catalytically active substances for cleaning exhaust gases, in particular for internal combustion engines.
- These metallic catalyst carrier bodies consist of a carrier matrix with spirally wound, very thin-walled, smooth and / or corrugated metal strips, which are joined together in a circular-cylindrical or oval-cylindrical jacket tube by welding, soldering or gluing.
- the object of the present invention is a catalyst carrier body for the exhaust gases of internal combustion engines from smooth and / or corrugated metal strips spirally wound and fastened in a casing tube, which avoids the disadvantages mentioned above.
- a catalyst body according to the first claim Due to the proposed longitudinal division of the matrix body by means of radial or tendon-shaped slots into several sectors or zones over the cross-section, the spirally wound, rigid matrix structure becomes in its ring structure of the mutually supported matrix cells interrupted. Theoretically, the thermal expansion of the matrix body is prevented as a quasi full-surface body against the colder jacket tube.
- the individual sectors of the carrier matrix are fastened in a stable bond with the jacket pipe by means of a joining connection and, under thermal stress, have unrestricted expansion options in the direction of the free spaces created by the slots, which prevents plastic alternating deformations of the matrix cells with the consequences of destruction and detachment of the carrier matrix.
- the slots can, for example, after joining the catalyst carrier body by welding, soldering, gluing or other joining processes by means of thermal, chemical, mechanical or other separation and removal processes, such as laser beam burning, chemical sinking, spark erosion, etc. Vibration saws, rooms, etc., are introduced into the carrier matrix.
- the jacket tube remains undamaged. Since the center of the carrier matrix may consist of more densely wound sheet metal layers, it may be advantageous not to pass the slots through this core, but only up to or close to it. This does not affect the beneficial effects of the slots. Also, the slits do not have to have the width required for the stretching during production, since the carrier matrix expands and plastically deforms during the first heating, so that the slits then have the exactly necessary width when they cool down. In this case, it has an advantageous effect that the slots are practically closed at operating temperature and leave no undesired path for the gas.
- the slots the total length of the catalyst carrier cover the body.
- the catalyst carrier body then consists of various segments fastened to the casing tube, which can expand unhindered in the free space formed by the slots. Since, as stated above, the slots are practically closed at operating temperature, but at least not larger than the other openings, the slots do not have any disadvantages during operation. However, they prevent tension and plastic deformation of the individual segments during cooling, since these can now contract individually in the direction of the jacket tube.
- the slots are arranged axially parallel in the longitudinal direction.
- Such axially parallel slots can be made most easily retrospectively with a fully wound catalyst carrier body.
- the slots on the front and rear of the catalyst carrier body are offset from one another and arranged over a portion of its total length. If the slits overlap in the middle of the body, the advantages mentioned above are retained with this arrangement. In addition, even when the catalyst carrier body is cold, there is no continuous gap through which gases could escape.
- the catalyst carrier body from two or more slotted disks arranged at a distance from one another in the casing tube.
- the division of the total catalyst length into several narrow sections with spaces in between leads to another advantage. Calculations and tests have shown that with the usual dimensions and the gas velocities in the parallel channels of the previous catalytic converters, the flow changes to the laminar state after about 20-30 mm, which is due to the lack of surface contacting of the exhaust gas for the chemical processes taking place in a catalytic converter is less favorable than a turbulent flow. Due to the division into a plurality of partial catalyst bodies arranged one behind the other in the direction of flow, the flow to each catalyst portion is only in the turbulent state, which considerably improves the catalytic effectiveness. When the exhaust gas emerges from the previous catalyst section into the intermediate space to the next section, the exhaust gas mixes very well, which also contributes to improving the catalytic efficiency in terms of heat distribution, light-off behavior and conversion rate.
- FIG. 1 shows a cross section through FIG. 1.
- a cross section through another embodiment of the invention is also shown schematically.
- the catalyst carrier body is divided by three tendon-shaped slots 11, 12, 13 into six cross-sectional segments, which are each attached to the casing tube 2 by joining technology. These slots do not go through the entire catalyst carrier body but only up to the middle or a little bit beyond. From the other side there are also slots 14, 15, 16 in the catalyst carrier body, which are offset from the slots 11, 12, 13. This is indicated in Fig. 3 by dashed lines.
- the slots 21 show a possibility of arranging the slots, which avoids cutting through the more tightly wound center 20 of the catalyst carrier body.
- the slots 21 lead tangentially to the denser wound center 20 and end in its vicinity. Even if the resulting segments are not completely separated from one another in this exemplary embodiment, the matrix deforms during the first operation in such a way that the advantages mentioned above are essentially also present in this arrangement of the slots.
Abstract
Description
Die vorliegende Erfindung betrifft einen metallischen Trägerkörper für Beschichtungen von katalytisch wirkenden Stoffen zur Reinigung von Abgasen, insbesondere für Verbrennungskraftmaschinen. Diese metallischen Katalysator-Trägerkörper bestehen aus einer .Trägermatrix mit spiralig aufgewickelten, sehr dünnwandigen, glatten und/ oder gewellten Blechbändern, die in einem kreiszylindrischen oder auch ovalzylindrischen Mantelrohr fügetechnisch durch Schweißen, Löten oder Kleben miteinander verbunden sind.The present invention relates to a metallic carrier body for coatings of catalytically active substances for cleaning exhaust gases, in particular for internal combustion engines. These metallic catalyst carrier bodies consist of a carrier matrix with spirally wound, very thin-walled, smooth and / or corrugated metal strips, which are joined together in a circular-cylindrical or oval-cylindrical jacket tube by welding, soldering or gluing.
In der deutschen Offenlegungsschrift 29 24 592.9 sind zahlreiche Lötverfahren zur Herstellung solcher Katalysator-Trägerkörper angedeutet und in Fig. 7 der entsprechenden Beschreibung ist auch ein Katalysator-Trägerkörper dargestellt, der eine besonders feste Lötverbindung zwischen seiner äußeren Lage und dem Mantelrohr bildet. Diese Katalysator-Trägerkörper werden beim Betrieb von .Verbrennungskraftmaschinen, insbesondere Kraftfahrzeug-, motoren, erheblichen und wechselnden thermischen und mechanischen Beanspruchungen ausgesetzt. Die dünnwandigen Bleche der Trägermatrix werden bei hoher Motorleistung in kürzester Zeit durch die katalytische Umsetzung des Abgases von ca. 500 C Betriebstemperatur örtlich über mehr oder minder große Bereiche auf Temperaturen über 900° C erhitzt, während das sie umgebende dickwandige Mantelrohr seine durch äußere Luftkühlung relativ niedrige Betriebstemperatur von ca. 300° C noch längere Zeit beibehält und somit die Trägermatrix an einer spannungsfreien thermischen Ausdehnung ihres Volumens hindert. Die hierdurch bei hoher Temperatur entstehenden plastischen Druckverformungen der Trägermatrixzellen bewirken in der Abkühlungsphase durch trägheitsbedingte Temperaturgradienten zwischen Matrix und Mantelrohr hohe Zugbelastungen auf die Zellenwände und ihre Verbindungsstellen, die infolge der plastischen Wechselverformungen schon nach kurzer Betriebszeit reißen und in den Zonen hoher Wechselbeanspruchung zur Ablösung von ganzen Teilstücken des Trägermatrixkörpers führen können.In the German published patent application 29 24 592.9 numerous soldering methods for the production of such catalyst carrier bodies are indicated and in FIG. 7 of the corresponding description a catalyst carrier body is also shown which forms a particularly firm soldered connection between its outer layer and the jacket tube. These catalyst carrier bodies are exposed to considerable and changing thermal and mechanical loads during the operation of internal combustion engines, in particular motor vehicles and engines. The thin-walled sheets of the carrier matrix are heated at high engine power in a very short time by the catalytic conversion of the exhaust gas from approx. 500 C operating temperature locally over more or less large areas to temperatures above 900 ° C, while the surrounding thick-walled jacket pipe is relatively relative due to external air cooling maintains low operating temperature of approx. 300 ° C for a long time and thus preventing the carrier matrix from stress-free thermal expansion of its volume. The resulting plastic pressure deformations of the carrier matrix cells at high temperature cause high tensile loads on the cell walls and their connection points in the cooling phase due to inertia-related temperature gradients between the matrix and the casing tube Can lead sections of the carrier matrix body.
In Erprobungsversuchen mit Hochleistungs-Katalysatoren wurde eindeutig ermittelt, daß in Bezug auf die Stabilität und eine funktionsgerechte Lebensdauer von metallischen Katalysator-Trägerkörpern nicht nur die durch Gasdruck, Pulsation und Schwingungen erzeugten axialen und radialen Kräfte beachtet werden müssen, sondern die durch eine Dehnungsbehinderung bei der Erwärmung und Abkühlung der Trägermatrix hervorgerufenen radialen Wechselbelastungen von weitaus größerer Bedeutung sind.In trials with high-performance catalysts, it was clearly determined that not only the axial and radial forces generated by gas pressure, pulsation and vibrations have to be taken into account with regard to the stability and a functional lifetime of metallic catalyst carrier bodies, but also those caused by a strain hindrance in the Heating and cooling the radial alternating loads caused by the carrier matrix are of far greater importance.
Aufgabe der vorliegenden Erfindung ist ein Katalysator-Trägerkörper für die Abgase von Verbrennungskrafmaschinen aus glatten und/oder gewellten Blechbändern spiralig aufgewickelt und in einem Mantelrohr fügetechnisch befestigt, der die oben erwähnten Nachteile vermeidet.The object of the present invention is a catalyst carrier body for the exhaust gases of internal combustion engines from smooth and / or corrugated metal strips spirally wound and fastened in a casing tube, which avoids the disadvantages mentioned above.
Zur Lösung dieser Aufgabe wird ein Katalysatorkörper nach dem ersten Anspruch vorgeschlagen. Durch die vorgeschlagene Längsaufteilung des Matrixkörpers mittels radialer oder sehnenförmiger Schlitze in mehrere Sektoren oder Zonen über den Querschnitt wird die spiralig aufgewickelte, steife Matrixstruktur in ihrem Ringverband der gegeneinander gestützen Matrixzellen unterbrochen. Theoretisch wird die thermische Dehnung des Matriskörpers als quasi Vollflächenkörper gegen das kältere Mantelrohr verhindert. Die einzelnen Sektoren der Trägermatrix sind mittels fügetechnischer Verbindung im stabilen Verband mit dem Mantelrohr befestigt und haben bei thermischer Belastung ungehinderte Dehnungsmöglichkeiten in Richtung der durch die Schlitze geschaffenen Freiräume, wodurch plastische Wechselverformungen der Matrixzellen mit den Folgen von Zerstörung und Ablösung der Trägermatrix vermieden werden. Die Schlitze können beispielsweise nach dem Fügen des Katalysator-Trägerkörpers durch Schweissen, Löten, Kleben oder sonstige Fügeverfahren mittels thermischer, chemischer, mechanischer oder sonstiger Trenn- und Abtragungsverfahren, wie z.B. Laserstrahl-Brennen, chemisches Senken, Funkene-rosion,. Vibrationssägen, Räumen usw., in die Trägermatrix eingebracht werden. Das Mantelrohr bleibt dabei unbeschädigt. Da das Zentrum der Trägermatrix unter Umständen aus dichter gewickelten Blechschichten besteht, kann es vorteilhaft sein, die Schlitze nicht durch diesen Kern hindurchzuführen, sondern nur bis in seine Nähe oder dicht an ihm vorbei. Dies beeinträchtigt die vorteilhaften Wirkungen der Schlitze nicht. Auch brauchen die Schlitze bei der Herstellung nicht die für die Dehnung nötige Breite zu haben, da die Trägermatrix sich bei der ersten Aufheizung ausdehnt und plastisch verformt, so daß die Schlitze dann bei der Abkühlung die exakt nötige Breite erhalten. In diesem Falle wirkt sich vorteilhaft aus, daß bei Betriebstemperatur die Schlitze praktisch geschlossen sind und dem Gas keinen unerwünschten Weg freilassen.To achieve this object, a catalyst body according to the first claim is proposed. Due to the proposed longitudinal division of the matrix body by means of radial or tendon-shaped slots into several sectors or zones over the cross-section, the spirally wound, rigid matrix structure becomes in its ring structure of the mutually supported matrix cells interrupted. Theoretically, the thermal expansion of the matrix body is prevented as a quasi full-surface body against the colder jacket tube. The individual sectors of the carrier matrix are fastened in a stable bond with the jacket pipe by means of a joining connection and, under thermal stress, have unrestricted expansion options in the direction of the free spaces created by the slots, which prevents plastic alternating deformations of the matrix cells with the consequences of destruction and detachment of the carrier matrix. The slots can, for example, after joining the catalyst carrier body by welding, soldering, gluing or other joining processes by means of thermal, chemical, mechanical or other separation and removal processes, such as laser beam burning, chemical sinking, spark erosion, etc. Vibration saws, rooms, etc., are introduced into the carrier matrix. The jacket tube remains undamaged. Since the center of the carrier matrix may consist of more densely wound sheet metal layers, it may be advantageous not to pass the slots through this core, but only up to or close to it. This does not affect the beneficial effects of the slots. Also, the slits do not have to have the width required for the stretching during production, since the carrier matrix expands and plastically deforms during the first heating, so that the slits then have the exactly necessary width when they cool down. In this case, it has an advantageous effect that the slots are practically closed at operating temperature and leave no undesired path for the gas.
In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, daß die Schlitze die Gesamtlänge des Katalysator-Trägerkörpers überdecken. Der Katalysator-Trägerkörper besteht dann aus verschiedenen am Mantelrohr befestigten Segmenten, welche sich ungehindert in den durch die Schlitze gebildeten Freiraum ausdehnen können. Da bei Betriebstemperatur, wie oben gesagt, die Schlitze praktisch geschlossen, zumindest aber nicht größer als die übrigen Öffnungen sind, bringen die Schlitze im Betrieb keine Nachteile mit sich. Sie verhindern jedoch beim Abkühlen Spannungen und plastische Verformungen der einzelnen Segmente, da diese sich nunmehr einzeln in Richtung auf das Mantelrohr zusammenziehen können.In a further embodiment of the invention it is proposed that the slots the total length of the catalyst carrier cover the body. The catalyst carrier body then consists of various segments fastened to the casing tube, which can expand unhindered in the free space formed by the slots. Since, as stated above, the slots are practically closed at operating temperature, but at least not larger than the other openings, the slots do not have any disadvantages during operation. However, they prevent tension and plastic deformation of the individual segments during cooling, since these can now contract individually in the direction of the jacket tube.
In weiterer Ausgestaltung der Erfindung wird gemäß dem Anspruch 3 vorgeschlagen, daß die Schlitze in Längsrichtung achsparallel angeordnet sind. Solche achsparallelen Schlitze lassen sich nachträglich am leichtesten bei einem fertig gewickelten Katalysator-Trägerkörper anbringen.In a further embodiment of the invention it is proposed according to claim 3 that the slots are arranged axially parallel in the longitudinal direction. Such axially parallel slots can be made most easily retrospectively with a fully wound catalyst carrier body.
In spezieller Ausgestaltung der Erfindung wird im Anspruch 4 vorgeschlagen, daß die Schlitze an der Vorder- und Rückseite des Katalysator-Trägerkörpers gegeneinander versetzt und über ein Teilstück seiner Gesamtlänge angeordnet sind. Sofern sich die Schlitze in der Mitte des Körpers überschneiden, bleiben bei dieser Anordnung die oben genannten Vorteile erhalten. Darüberhinaus öffnet sich auch bei kaltem Katalysator-Trägerkörper kein durchgehender Spalt, durch den Gase entweichen könnten.In a special embodiment of the invention it is proposed in claim 4 that the slots on the front and rear of the catalyst carrier body are offset from one another and arranged over a portion of its total length. If the slits overlap in the middle of the body, the advantages mentioned above are retained with this arrangement. In addition, even when the catalyst carrier body is cold, there is no continuous gap through which gases could escape.
Im Anspruch 5 wird in weiterer Ausgestaltung der Erfindung vorgeschlagen, den Katalysator-Trägerkörper aus zwei oder mehr mit-Abstand voneinander im Mantelrohr angeordneten mit Schlitzen versehenen Scheiben herzustellen. Die Aufteilung der Katalysator-Gesamtlänge in mehrere schmale Teilstücke mit dazwischenliegenden Freiräumen führt zu einem weiteren Vorteil. Berechnungen und Versuche haben gezeigt, daß bei den üblichen Abmessungen und den Gasgeschwindigkeiten in den parallelen Kanälen der bisherigen Abgaskatalysatoren die Strömung nach etwa 20 - 30 mm in den laminaren Zustand übergeht, der für die in einem Katalysator ablaufenden chemischen Vorgänge wegen der mangelnden Oberflächenkontaktierung des Abgases weniger günstig ist als eine turbulente Strömung. Durch die Aufteilung in mehrere in Strömungsrichtung hintereinander angeordnete Katalysator-Teilkörper wird jedes Katalysator-Teilstück nur im turbulenten Zustand angeströmt, wodurch die katalytische Wirksamkeit erheblich verbessert wird. Beim Austritt des Abgases aus dem vorhergehenden Katalysator-Teilstück in den Zwischenfreiraum zum nächsten Teilstück entsteht eine sehr gute Durchmischung des Abgases, die in Bezug auf die Wärmeverteilung, das Anspringverhalten und die Umsatzrate ebenfalls zur Verbesserung des katalytischen Wirkungsgrades beiträgt.In a further embodiment of the invention, it is proposed to manufacture the catalyst carrier body from two or more slotted disks arranged at a distance from one another in the casing tube. The division of the total catalyst length into several narrow sections with spaces in between leads to another advantage. Calculations and tests have shown that with the usual dimensions and the gas velocities in the parallel channels of the previous catalytic converters, the flow changes to the laminar state after about 20-30 mm, which is due to the lack of surface contacting of the exhaust gas for the chemical processes taking place in a catalytic converter is less favorable than a turbulent flow. Due to the division into a plurality of partial catalyst bodies arranged one behind the other in the direction of flow, the flow to each catalyst portion is only in the turbulent state, which considerably improves the catalytic effectiveness. When the exhaust gas emerges from the previous catalyst section into the intermediate space to the next section, the exhaust gas mixes very well, which also contributes to improving the catalytic efficiency in terms of heat distribution, light-off behavior and conversion rate.
Ausführungsbeispiele der Erfindung sind mit ihren wesentlichen Merkmalen in der Zeichnung dargestellt.Embodiments of the invention are shown with their essential features in the drawing.
- Fig. 1 zeigt in perspektivischer Darstellung einen kreiszylindrischen, gewickelten Katalysatorkörper mit drei gleichmäßig über den Querschnitt verteilten radialen Schlitzen.Fig. 1 shows a perspective view of a circular cylindrical, wound catalyst body with three evenly distributed over the cross-section radial slots.
- Fig. 2 zeigt einen Querschnitt durch Fig. 1.FIG. 2 shows a cross section through FIG. 1.
- Fig. 3 zeigt einen weiteren Querschnitt durch einen erfindungsgemäßen Katalysatorkörper mit sehnenförmigen Schlitzen.3 shows a further cross section through a catalyst body according to the invention with tendon-shaped slots.
- Fig. 4 .zeigt einen Querschnitt durch einen erfindungsge- . mäßen Katalysatorkörper,bei dem die Schlitze tangential an dem dichteren Kern des Katalysatorkörpers vorbeilaufen und in seiner Nähe enden.Fig. 4 shows a cross section through an inventive. moderate catalyst body, in which the slots run tangentially past the denser core of the catalyst body and end in its vicinity.
In Fig. 1 ist der Katalysator-Trägerkörper 1 mit teilweise aufgerissenem Mantelrohr 2 dargestellt. Die spiralig übereinander gewickelten gewellten 3 und glatten 4 Blechbänder sind von drei radial verlaufenden Schlitzen 5 unterbrochen. Dadurch entstehen drei Querschnitts-Sektoren 6, 7 und 8, welche fügetechnisch fest mit dem Mantelrohr 2 verbunden sind und sich in Richtung des durch die Schlitze 5 gebildeten Freiraumes ausdehnen können. Fig. 2 zeigt einen Querschnitt durch Fig. 1.In Fig. 1, the catalyst carrier body 1 is shown with the
In Fig. 3 ist ebenfalls schematisch ein Querschnitt durch ein anderes Ausführungsbeispiel der Erfindung dargestellt. In Fig. 3 wird der Katalysator-Trägerkörper durch drei sehnenförmige Schlitze 11, 12, 13 in sechs Querschnitts-Segmente unterteilt, welche jeweils am Mantelrohr 2 fügetechnisch befestigt sind. Diese Schlitze gehen nicht durch den ganzen Katalysator-Trägerkörper hindurch sondern nur bis zurMitte oder ein kleines Stück darüberhinaus. Von der anderen Seite sind ebenfalls Schlitze 14, 15, 16 in dem Katalysator-Trägerkörper, welche gegenüber den Schlitzen 11, 12, 13versetzt sind. Dies ist in Fig. 3 durch Strichelung angedeutet.In Fig. 3, a cross section through another embodiment of the invention is also shown schematically. In Fig. 3, the catalyst carrier body is divided by three tendon-
In Fig. 4 ist eine Möglichkeit der Anordnung der Schlitze dargestellt, welche ein Durchschneiden des dichter gewickelten Zentrums 20 des Katalysator-Trägerkörpers vermeidet. Die Schlitze 21 führen dabei tangential an das dichter gewickelte Zentrum 20 heran und enden in seiner Nähe. Auch wenn die entstehenden Segmente bei diesem Ausführungsbeispiel nicht vollständig voneinander getrennt sind, verformt sich die Matrix beim ersten Betrieb doch so, daß die oben genannten Vorteile im wesentlichen auch bei dieser Anordnung der Schlitze vorhanden sind.4 shows a possibility of arranging the slots, which avoids cutting through the more tightly
Claims (5)
dadurch gekennzeichnet,
daß die Matrix des Katalysator-Trägerkörpers .in Längsrichtung durch etwa radial oder in Richtung von Sehnen verlaufende Längsschlitze (5)in mehrere Querschnitts-Sektoren (6, 7, 8) geteilt ist.1. catalyst support body (1) for internal combustion engines made of smooth (4) and / or corrugated (3) and spirally wound sheet metal strips, which are fastened by joining technology in a casing tube (2),
characterized,
that the matrix of the catalyst carrier body is divided into several cross-sectional sectors (6, 7, 8) in the longitudinal direction by longitudinal slots (5) running approximately radially or in the direction of chords.
dadurch gekennzeichnet ,
daß die Schlitze (5) die Gesamtlänge des Katalysator-Trägerkörpers überdecken.2. catalyst support body according to claim 1,
characterized ,
that the slots (5) cover the entire length of the catalyst carrier body.
daß die Schlitze..(5) in Längsrichtung achsparallel angeordnet sind.3. catalyst support body according to claim 1 or 2, characterized in
that the slots .. (5) are arranged axially parallel in the longitudinal direction.
daß die Schlitze an der Vorder- und Rückseite des Katalysator-Trägerkörpers gegeneinander versetzt und über ein Teilstück seiner Gesamtlänge angeordnet sind.4. catalyst carrier body according to claim 1 or 2, characterized in
that the slots on the front and rear of the catalyst carrier body are offset from one another and are arranged over a portion of its total length.
dadurch gekennzeichnet ,
daß der Katalysator-Trägerkörper aus zwei oder mehr mit Abstand voneinander im Mantelrohr angeordneten Scheiben besteht.5. catalyst support body according to one of the preceding claims,
characterized ,
that the catalyst carrier body consists of two or more disks arranged at a distance from one another in the casing tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT84103015T ATE22154T1 (en) | 1983-03-30 | 1984-03-19 | CATALYST CARRIER FOR INTERNAL COMBUSTION ENGINES WITH EXPANSION SLOTS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833311654 DE3311654A1 (en) | 1983-03-30 | 1983-03-30 | CATALYST SUPPORT BODY FOR INTERNAL COMBUSTION ENGINES WITH EXPANSION SLOTS |
| DE3311654 | 1983-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0121174A1 true EP0121174A1 (en) | 1984-10-10 |
| EP0121174B1 EP0121174B1 (en) | 1986-09-10 |
Family
ID=6195130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84103015A Expired EP0121174B1 (en) | 1983-03-30 | 1984-03-19 | Catalyst supporting matrix with expansion slots for internal-combustion engines |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0121174B1 (en) |
| AT (1) | ATE22154T1 (en) |
| DE (2) | DE3311654A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0245738A1 (en) * | 1986-05-12 | 1987-11-19 | INTERATOM Gesellschaft mit beschränkter Haftung | Metallic honeycomb body, particularly a catalyst carrier, provided with a supporting wall, and its manufacturing process |
| US4777158A (en) * | 1985-08-19 | 1988-10-11 | Interatom Gmbh | Method for the selective brazing of a metallic catalyst carrier body and a correspondingly produced catalyst carrier body |
| US4832998A (en) * | 1986-05-12 | 1989-05-23 | Interatom Gmbh | Honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions and a method for producing the same |
| US5146743A (en) * | 1988-04-25 | 1992-09-15 | Emitec Gesellschaft Fur Emissionstechnologie Mbh | Process for accelerating the response of an exhaust gas catalyst, and apparatus and electrically heatable carrier bodies for performing the method |
| US5340020A (en) * | 1989-06-20 | 1994-08-23 | Emitec Gesellschaft Fuer Emissiontechnologie Mbh | Method and apparatus for generating heat by flameless combustion of a fuel in a gas flow |
| EP0774053B1 (en) * | 1992-12-15 | 1998-09-02 | Sandvik Aktiebolag | Catalytic converter unit for motor exhausts |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602134A1 (en) * | 1986-01-24 | 1987-07-30 | Daimler Benz Ag | DEVICE FOR CLEANING ENGINE EXHAUST GASES WITH A METAL MATRIX CATALYST SOLELED IN A HOUSING |
| DE3738537A1 (en) * | 1987-11-13 | 1989-06-01 | Sueddeutsche Kuehler Behr | METHOD AND DEVICE FOR PRODUCING A SUPPORT BODY FOR A CATALYTIC REACTOR |
| JPH0619793Y2 (en) * | 1988-11-30 | 1994-05-25 | 臼井国際産業株式会社 | Exhaust gas purification device |
| DE3926072C2 (en) * | 1989-08-07 | 1994-01-13 | Emitec Emissionstechnologie | Exhaust gas purification catalyst with elastic elements to compensate for longitudinal expansion |
| US5866230A (en) * | 1993-01-11 | 1999-02-02 | Emitec Gesellschaft Fuer Emissionstechnologie Gmbh | Extruded honeycomb body of ceramic and/or metallic material with increased flexibility |
| DE4300477A1 (en) * | 1993-01-11 | 1994-07-14 | Emitec Emissionstechnologie | Extruded honeycomb body made of ceramic and / or metallic material with increased flexibility |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755120A (en) * | 1972-02-03 | 1973-08-28 | New Prod Corp | Internal combustion engine exhaust catalytic reactor, with electrical charge means |
| FR2214818A1 (en) * | 1973-01-20 | 1974-08-19 | Sueddeutsche Kuehler Behr | |
| US3887741A (en) * | 1973-08-13 | 1975-06-03 | Corning Glass Works | Thin-walled honeycombed substrate with axial discontinuities in the periphery |
| US3983283A (en) * | 1974-03-18 | 1976-09-28 | Corning Glass Works | Honeycombed structures having open-ended cells formed by interconnected walls with longitudinally extending discontinuities |
-
1983
- 1983-03-30 DE DE19833311654 patent/DE3311654A1/en not_active Withdrawn
-
1984
- 1984-03-19 EP EP84103015A patent/EP0121174B1/en not_active Expired
- 1984-03-19 DE DE8484103015T patent/DE3460660D1/en not_active Expired
- 1984-03-19 AT AT84103015T patent/ATE22154T1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755120A (en) * | 1972-02-03 | 1973-08-28 | New Prod Corp | Internal combustion engine exhaust catalytic reactor, with electrical charge means |
| FR2214818A1 (en) * | 1973-01-20 | 1974-08-19 | Sueddeutsche Kuehler Behr | |
| US3887741A (en) * | 1973-08-13 | 1975-06-03 | Corning Glass Works | Thin-walled honeycombed substrate with axial discontinuities in the periphery |
| US3983283A (en) * | 1974-03-18 | 1976-09-28 | Corning Glass Works | Honeycombed structures having open-ended cells formed by interconnected walls with longitudinally extending discontinuities |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4777158A (en) * | 1985-08-19 | 1988-10-11 | Interatom Gmbh | Method for the selective brazing of a metallic catalyst carrier body and a correspondingly produced catalyst carrier body |
| EP0245738A1 (en) * | 1986-05-12 | 1987-11-19 | INTERATOM Gesellschaft mit beschränkter Haftung | Metallic honeycomb body, particularly a catalyst carrier, provided with a supporting wall, and its manufacturing process |
| US4803189A (en) * | 1986-05-12 | 1989-02-07 | Interatom Gmbh | Catalyst carrier of metallic honeycomb having a supporting wall and a method for producing the same |
| US4832998A (en) * | 1986-05-12 | 1989-05-23 | Interatom Gmbh | Honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions and a method for producing the same |
| US4923109A (en) * | 1986-05-12 | 1990-05-08 | Interatom Gmbh | Method for producing a honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions |
| US4946822A (en) * | 1986-05-12 | 1990-08-07 | Interatom Gmbh | Catalyst carrier body having a supporting wall and a method for producing the same |
| US5146743A (en) * | 1988-04-25 | 1992-09-15 | Emitec Gesellschaft Fur Emissionstechnologie Mbh | Process for accelerating the response of an exhaust gas catalyst, and apparatus and electrically heatable carrier bodies for performing the method |
| US5322672A (en) * | 1988-04-25 | 1994-06-21 | Emitec Gesellschaft Fuer Emissionstechnologie | Electrically conductive honeycomb body, and method of monitoring and operating it as an exhaust gas catalyst carrier body |
| US5480621A (en) * | 1988-04-25 | 1996-01-02 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Electrically conductive honeycomb as an exhaust gas catalyst carrier body |
| US5340020A (en) * | 1989-06-20 | 1994-08-23 | Emitec Gesellschaft Fuer Emissiontechnologie Mbh | Method and apparatus for generating heat by flameless combustion of a fuel in a gas flow |
| EP0774053B1 (en) * | 1992-12-15 | 1998-09-02 | Sandvik Aktiebolag | Catalytic converter unit for motor exhausts |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0121174B1 (en) | 1986-09-10 |
| DE3311654A1 (en) | 1984-10-04 |
| ATE22154T1 (en) | 1986-09-15 |
| DE3460660D1 (en) | 1986-10-16 |
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