[go: up one dir, main page]

DE3632059C1 - Holding device for the monoliths of an exhaust gas catalyst - Google Patents

Holding device for the monoliths of an exhaust gas catalyst

Info

Publication number
DE3632059C1
DE3632059C1 DE19863632059 DE3632059A DE3632059C1 DE 3632059 C1 DE3632059 C1 DE 3632059C1 DE 19863632059 DE19863632059 DE 19863632059 DE 3632059 A DE3632059 A DE 3632059A DE 3632059 C1 DE3632059 C1 DE 3632059C1
Authority
DE
Germany
Prior art keywords
monolith
housing
monoliths
holding device
exhaust gas
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.)
Expired
Application number
DE19863632059
Other languages
German (de)
Inventor
Norbert Pautler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE19863632059 priority Critical patent/DE3632059C1/en
Application granted granted Critical
Publication of DE3632059C1 publication Critical patent/DE3632059C1/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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
    • F01N3/28Construction of catalytic reactors
    • F01N3/2839Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853Arrangements 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
    • F01N3/2864Arrangements 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 the mats or gaskets comprising two or more insulation layers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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
    • F01N3/28Construction of catalytic reactors
    • F01N3/2839Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853Arrangements 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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
    • F01N3/28Construction of catalytic reactors
    • F01N3/2839Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853Arrangements 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
    • F01N3/2867Arrangements 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 the mats or gaskets being placed at the front or end face of catalyst body

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

To mount a monolith within a catalyst housing, in addition to a swelling mat, a bimetallic ring is provided which is arranged between the swelling mat and the housing. This bimetallic ring is matched to the periphery of the monolith, has a concave-shaped peripheral contour and is fabricated to have alternating slots on both sides. On heating, the slots expand so that the periphery of the bimetallic ring increases and thus the greater thermal expansion of the catalyst housing, in comparison with that of the monolith, is compensated for.

Description

Die Erfindung bezieht sich auf eine Haltevorrichtung für den Monolithen eines Abgaskatalysators innerhalb eines Gehäuses der im Oberbegriff des ersten Anspruchs angegebenen Art.The invention relates to a holding device for the Monoliths of a catalytic converter within a housing which in the Preamble of the first claim specified type.

Haltevorrichtungen für Monolithen von Abgaskatalysatoren sind in mannigfachen Ausbildungen bekannt. Die Hauptproblematik liegt dabei in den unterschiedlichen Wärmeausdehnungs-Koeffizienten des den Monolithen bildenden keramischen Trägermaterials sowie des den Monolithen umgebenden Gehäuses. Da sich in den Abgaskatalysatoren von Verbrennungsmotoren Temperaturen von bis zu 800°C einstellen können, während in der Stillstandsphase der Brennkraftmaschine der Katalysator die Umgebungstemperatur annimmt, müssen Vorkehrungen getroffen werden, um die unterschiedlichen Wärmeausdehnungen auszugleichen. Dabei darf einerseits kein eine Undichtigkeit bildender Spalt entstehen, andererseits darf der vom Gehäuse auf den Monolithen ausgeübte Druck nicht so stark sein, daß das keramische Trägermaterial Schaden nehmen könnte.Holding devices for monoliths of catalytic converters are in manifold trainings known. The main problem lies thereby in the different coefficients of thermal expansion of the the monolith forming ceramic support material and the the housing surrounding the monolith. Because in the catalytic converters of internal combustion engines temperatures of up to 800 ° C can adjust while the engine is at a standstill the catalytic converter assumes the ambient temperature, Precautions must be taken to accommodate the different Compensate for thermal expansion. On the one hand, no one is allowed Leak-forming gap arise, on the other hand, that of Housing pressure on the monolith may not be as strong that the ceramic carrier material could be damaged.

Eine Anordnung zur katalytischen Reinigung von Abgasen, bei welcher zwischen Monolith und Gehäuse eine Schicht aus Keramikfasern vorgesehen ist, zeigt die DE-OS 24 58 994. In seiner Lage fixiert ist dabei der Monolith von zwei umhüllenden Metallfolien, welche ihrerseits mit dem Gehäuse verschweißt sind. Bei einer derartigen Anordnung können Undichtigkeiten zwischen den Folien sowie dem Monolithen jedoch nicht ausgeschlossen werden.An arrangement for the catalytic purification of exhaust gases, in which a layer between the monolith and the housing is provided from ceramic fibers, shows DE-OS 24 58 994. The monolith of is fixed in its position two enveloping metal foils, which in turn with the Housing are welded. With such an arrangement can leakages between the foils as well However, monoliths cannot be excluded.

Eine weitere Haltevorrichtung für den Monolithen eines Abgaskatalysators zeigt die DE-OS 23 00 704. Dabei ist der Monolith auf seiner Oberfläche mit einer metallischen Schicht versehen, mit welcher elastische Elemente in Form eines Wellrohres verbunden sind, welches seinerseits wiederum in dem in den Katalysator mündenden Abgasrohr gelagert ist. Sowohl das Aufbringen der metallischen Schicht auf den Monolithen als auch das anschließende Verbinden des Wellrohres mit jener metallischen Schicht, beispielsweise durch Hartlöten, erfordern jedoch äußerst aufwendige Herstellungsverfahren.Another holding device for the monolith one Exhaust gas catalyst shows the DE-OS 23 00 704. It is the monolith on its surface with a metallic Provide layer with which elastic elements are connected in the form of a corrugated tube, which in turn again in the opening into the catalyst Exhaust pipe is stored. Both applying the metallic layer on the monoliths as well then connecting the corrugated pipe with that metallic Require layer, for example by brazing however, extremely complex manufacturing processes.

In dem Artikel "Entwicklung einer Monolithlagerung in katalytischen Konvertern für ECE-Fahrbedingungen" der Motortechnischen Zeitschrift MTZ 49 (1985) 9, Seiten 343 ff., ist eine gattungsbildende Monolithlagerung dargestellt, welche die oben erläuterten Anforderungen teilweise erfüllt. Dabei ist zwischen dem Monolithen und dem Gehäuse eine Quellmatte angeordnet, deren Wärmeausdehnungs- Koeffizient ungleich höher ist, als der des umgebenden Gehäuses. Damit soll auch noch bei hohen Temperaturen und hohen Wärmeausdehnungen eine sichere Einspannung des Monolithen im Gehäuse gewährleistet sein.In the article "Development of a monolith storage in catalytic Converters for ECE driving conditions "of engine technology Journal MTZ 49 (1985) 9, pages 343 ff., Is a generic Monolith storage, which meets the requirements explained above partially fulfilled. It is between the monolith and a swelling mat is arranged in the housing, the thermal expansion Coefficient is much higher than that of the surrounding housing. This should also be used at high temperatures and high thermal expansion  secure clamping of the monolith in the housing to be guaranteed.

Es hat sich jedoch gezeigt, daß diese Art der Monolithlagerung über längere Betriebszeiten des Katalysators nur in eingeschränktem Maße zufriedenstellend ist. Zwar erfüllt die Quellmatte stets die Aufgabe der Abdichtung des Spaltes zwischen dem Monolithen und dem Gehäuse, eine gegen Schüttelbewegungen sichere Fixierung des Monolithen im Gehäuse ist jedoch nach langer Betriebsdauer mit oftmals wechselnden Temperaturen nicht mehr gegeben.However, it has been shown that this type of monolith storage over longer operating times of the catalytic converter only to a limited extent Dimensions is satisfactory. The source mat always fulfills the task of sealing the gap between the monolith and the housing, a secure fixation against shaking movements of the monolith in the housing is however after a long period of operation often changing temperatures no longer exist.

Aufgabe der vorliegenden Erfindung ist es daher, die gattungsbildende Monolithlagerung derart weiterzubilden, daß auch über lange Betriebszeiten eine starre Lagerung des Monolithen im Gehäuse sichergestellt ist.The object of the present invention is therefore the generic To further develop monolith storage in such a way that even over a long period Operating times a rigid storage of the monolith in the housing is ensured.

Die erfindungsgemäße Lösung dieser Aufgabe besteht in den kennzeichnenden Merkmalen des ersten Patentanspruchs, vorteilhafte Aus- und Weiterbildungen der Erfindung beschreiben die Unteransprüche.The achievement of this task consists in the characterizing Features of the first claim, advantageous Training and further developments of the invention describe the subclaims.

Zwischen einer Quellmatte oder einer elastischen Zwischenlage und dem Gehäuse angeordnete Bimetallelemente, welche so geformt sind, daß bei höheren Temperaturen eine zusätzliche Pressung auf den Monolithen bzw. auf die Quellmatte aufgebracht wird, unterstützen die Quellmatte/elastische Zwischenlage in der Fixierung des Monolithen und gewährleisten somit auch bei einem sich unter den höheren Temperaturen stark ausdehnenden Gehäuse eine feste Lagerung des Monolithen. Zwar ist aus der DE-OS 25 25 661 die Verwendung von Bimetallscheiben zur Lagerung von Monolithen in Katalysatorgehäusen bekannt, dabei wirken die Bimetallscheiben jedoch stets direkt auf die Stirnseite des Monolithen, bringen also, in dem sie sich an einem innenliegenden Flansch des Katalysatorgehäuses abstützen, eine axial wirkende Kraft auf den Monolithen auf. Die erfindungsgemäßen Bimetallelemente wirken jedoch zunächst auf die den Monolithen umhüllende Quellmatte/elastische Zwischenlage und leiten somit die Lagerkräfte radial in den Monolithen ein. Indem das Bimetallelement ringförmig ausgebildet ist und sich somit sowohl am Gehäuse als auch am Monolithen flächenmäßig abstützt, also beidseitig nahezu auf dem gesamten Umfang aufliegt, wird eine ungünstige punktförmige Krafteinleitung vermieden. Ein Schlitz in axialer Richtung gibt dabei dem Bimetall die Möglichkeit, sich unter Einfluß der aufgrund des Bimetalleffektes auftretenden Spannungen aufzuweiten und somit die unterschiedlichen Wärmeausdehnungen des Monolithen bzw. des Katalysatorgehäuses auszugleichen. Between a swelling mat or an elastic liner and bimetallic elements arranged in the housing and shaped in such a way that at higher temperatures an additional pressure on the Support monoliths or is applied to the swelling mat the swelling mat / elastic liner in the fixation of the monolith and thus guarantee one among the higher temperature high expansion housing a solid Storage of the monolith. Although from DE-OS 25 25 661 Use of bimetallic discs for the storage of monoliths in Catalyst housings known, the bimetallic discs act but always directly on the face of the monolith, so bring by attaching it to an internal flange of the catalytic converter housing support, an axial force on the monolith on. However, the bimetal elements according to the invention initially work on the swelling mat / elastic intermediate layer enveloping the monolith and thus introduce the bearing forces radially into the monolith.  In that the bimetallic element is annular and thus on both the housing and the monolith supported in terms of area, i.e. almost on both sides of the entire circumference, an unfavorable punctiform Force transmission avoided. A slit in axial direction gives the bimetal the possibility under the influence of the bimetal effect expanding voltages and thus the different thermal expansions of the monolith or to compensate for the catalytic converter housing.  

Weist das ringförmige Bimetallelement daneben gemäß Anspruch 3 eine konkav geformte Umfangskontur auf, so wird die sichere beidseitige Auflage längs des gesamten Ringumfanges nochmals verbessert, ferner ist damit eine vergrößerte Verformungsmöglichkeit unter dem Einfluß des Bimetalleffektes gegeben.Has the annular bimetallic element next to it according to claim 3 a concave contour, so the safe double-sided support again along the entire circumference of the ring improved, furthermore there is an increased possibility of deformation given under the influence of the bimetal effect.

Anspruch 4 hat schließlich den Vorteil, daß die Aufweitung quasi segmentweise erfolgt, so daß ohne Relativbewegung und auch bei häufig wechselnden Temperaturen stets eine umfassende flächenhafte Abstützung des ringförmigen Bimetallelementes sowohl am Gehäuse als auch auf dem Monolithen sichergestellt ist.Claim 4 finally has the advantage that the widening quasi done in segments, so that without relative movement and also at Frequently changing temperatures always a comprehensive area Support of the ring-shaped bimetal element both on the housing as well as on the monolith.

Im folgenden wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher beschrieben. Es zeigen: In the following the invention is based on a preferred embodiment described in more detail. Show it:  

Fig. 1 ein Prinzipmodell eines Abgaskatalysators mit einer erfindungsgemäßen Haltevorrichtung für den Monolithen; Fig. 1 shows a basic model of an exhaust gas catalytic converter according to the invention with a holding device for the monolith;

Fig. 2 einen Teil der abgewickelten Mantelfläche eines erfindungsgemäßen Bimetallringes. Fig. 2 shows a part of the developed lateral surface of a bimetal ring according to the invention.

Ein in seiner Gesamtheit mit 1 bezeichneter Abgaskatalysator in einer Abgasleitung 2 einer nicht gezeigten Brennkraftmaschine umfaßt ein äußeres Gehäuse 3, sowie ein inneres Gehäuse 4, welche voneinander durch eine Isoliermatte 5 getrennt sind und im Zuführstutzen 6 bzw. im Abführstutzen 7 zusammengeführt sind. Im Inneren des Abgaskatalysators 1 sind zwei Monolithen 8 angeordnet, welche von einer Quellmatte 9 pressend umgeben sind und von dieser im Innengehäuse 4 gehalten werden.An exhaust gas catalytic converter designated in its entirety by 1 in an exhaust gas line 2 of an internal combustion engine (not shown) comprises an outer housing 3 and an inner housing 4 , which are separated from one another by an insulating mat 5 and are brought together in the supply nozzle 6 or in the discharge nozzle 7 . Inside the exhaust gas catalytic converter 1 , two monoliths 8 are arranged, which are surrounded by a swelling mat 9 and are held by the latter in the inner housing 4 .

Im Bereich der Monolithen 8 ist das Innengehäuse 4 mit jeweils einer umlaufenden Sicke 10 versehen, in welcher ein im wesentlichen ringförmiges, den Monolithen 8 umschließendes Bimetallelement 11 (welches hier trotz der vorrangig ovalen Form der Monolithen als Bimetallring bezeichnet wird) angeordnet ist. Dieser Bimetallring 11 stützt sich einerseits in der Sicke 10 des Innengehäuses 4 ab und wirkt andererseits - vor allem aufgrund seiner konkav geformten Umfangskontur - pressend auf die Quellmatte 9 und damit auf den Monolithen 8 ein.In the area of the monoliths 8 , the inner housing 4 is provided with a circumferential bead 10 , in which an essentially annular bimetallic element 11, which surrounds the monolith 8, (which is referred to here as the bimetal ring despite the predominantly oval shape of the monoliths) is arranged. This bimetallic ring 11 is supported on the one hand in the bead 10 of the inner housing 4 and, on the other hand, has a pressing effect on the swelling mat 9 and thus on the monoliths 8 , above all due to its concavely shaped peripheral contour.

Fig. 2 zeigt einen Teil der abgewickelten Mantelfläche des Bimetallringes 11. Er ist beidseitig abwechselnd geschlitzt ausgeführt. Aufgrund der Bimetalleigenschaft von zwei übereinander geordneten Materialien mit verschiedenen Wärmeausdehnungs-Koeffizienten weitet sich der Bimetallring 11 an den Schlitzen 12 bei Erwärmung auf, vergrößert somit seinen Umfang und gleicht damit die unterschiedlichen Wärmeausdehnungen des Innengehäuses 4 bzw. des Monolithen 8 aus. Auf diese Weise wird der Monolith 8 unabhängig von der im Abgaskatalysator 1 herrschenden Temperatur stets mit nahezu dem gleichen Anpreßdruck im Innengehäuse 4 gehalten. Fig. 2 shows a part of the surface of the unrolled Bimetallringes. 11 It is alternately slotted on both sides. Due to the bimetallic properties of two superimposed materials with different coefficients of thermal expansion, the bimetallic ring 11 expands at the slots 12 when heated, thus enlarges its circumference and thus compensates for the different thermal expansions of the inner housing 4 or the monolith 8 . In this way, the monolith 8 is always held in the inner housing 4 with almost the same contact pressure regardless of the temperature prevailing in the exhaust gas catalytic converter 1 .

Eine Abdichtfunktion haben die Bimetallringe 11 nicht zu erfüllen; die Abdichtung eines sich zwischen dem Monolithen 8 sowie dem Innengehäuse 4 ergebenden Spaltes übernimmt die sich bei Erwärmung ebenfalls ausdehnende bekannte Quellmatte 9.The bimetal rings 11 do not have a sealing function; the sealing of a gap resulting between the monolith 8 and the inner housing 4 is carried out by the known swelling mat 9 , which also expands when heated.

Wird anstelle der Quellmatte eine elastische Zwischenlage (beispielsweise Drahtstricklagerung) verwendet, so ist in diesem Falle natürlich die Anordnung eines weiteren sich ebenfalls ausdehnenden Dichtelementes erforderlich.If an elastic intermediate layer (for example Wire knit storage) is used in this case of course the arrangement of another expanding one as well Sealing element required.

Claims (3)

1. Haltevorrichtung für den Monolithen eines Abgaskatalysators innerhalb eines Gehäuses mit einer die Mantelfläche des Monolithen umgebenden Quellmatte oder elastischen Zwischenlage, gekennzeichnet durch ein oder mehrere Bimetallelemente (11), welche zwischen der Quellmatte (9) bzw. der elastischen Zwischenlage und dem Gehäuse (4) angeordnet sind, wobei das Bimetallelement (11) ringförmig ausgebildet und mit mindestens einem Schlitz in axialer Richtung versehen ist.1. Holding device for the monolith of an exhaust gas catalytic converter within a housing with a swelling mat or elastic intermediate layer surrounding the outer surface of the monolith, characterized by one or more bimetallic elements ( 11 ), which between the swelling mat ( 9 ) or the elastic intermediate layer and the housing ( 4 ) are arranged, the bimetallic element ( 11 ) being annular and provided with at least one slot in the axial direction. 2. Haltevorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Bimetallelement (11) eine konkav geformte Umfangskontur aufweist.2. Holding device according to claim 1, characterized in that the bimetallic element ( 11 ) has a concavely shaped peripheral contour. 3. Haltevorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Bimetallelement (11) in axialer Richtung beidseitig abwechselnd geschlitzt ist.3. Holding device according to claim 1 or 2, characterized in that the bimetallic element ( 11 ) is alternately slotted on both sides in the axial direction.
DE19863632059 1986-09-20 1986-09-20 Holding device for the monoliths of an exhaust gas catalyst Expired DE3632059C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863632059 DE3632059C1 (en) 1986-09-20 1986-09-20 Holding device for the monoliths of an exhaust gas catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863632059 DE3632059C1 (en) 1986-09-20 1986-09-20 Holding device for the monoliths of an exhaust gas catalyst

Publications (1)

Publication Number Publication Date
DE3632059C1 true DE3632059C1 (en) 1988-03-31

Family

ID=6310017

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863632059 Expired DE3632059C1 (en) 1986-09-20 1986-09-20 Holding device for the monoliths of an exhaust gas catalyst

Country Status (1)

Country Link
DE (1) DE3632059C1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908887A1 (en) * 1989-03-17 1990-09-20 Eberspaecher J DEVICE FOR CATALYTIC DETOXIFICATION OR THE LIKE OF COMBUSTION ENGINE EXHAUST WITH TWO EXHAUST TREATMENT BODIES AND A PROTECTIVE RING BETWEEN
DE3930680A1 (en) * 1989-09-14 1991-03-28 Behr Gmbh & Co Radial and axial movements of expanding exhaust purifier - matrix in housing are permitted by fixed and mobile supports incorporating spring strips
DE4103571A1 (en) * 1991-02-06 1992-08-13 Roth Technik Gmbh Exhaust converter - has sealing element protecting external face of catalyst materials housing from hot exhaust gases
CN103946493A (en) * 2011-11-22 2014-07-23 斯堪尼亚商用车有限公司 Arrangement for fitting an exhaust cleaning unit in an exhaust passage
DE102022106603A1 (en) 2022-03-22 2023-09-28 Purem GmbH Exhaust gas treatment arrangement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2300704A1 (en) * 1973-01-08 1974-07-11 Eberspaecher J Catalytic exhaust gas purifier - has ceramics element with fired molybdenum coating supported by corrugated tube
DE2525661A1 (en) * 1974-06-10 1975-12-18 Engelhard Min & Chem GAS PURIFICATION DEVICE, IN PARTICULAR FOR CATALYTIC GAS PURIFICATION
DE2458994A1 (en) * 1974-12-13 1976-06-16 Eberspaecher J Exhaust purifier with ceramic catalyst carrier - has overlapping foils between carrier and ceramic fibre jacket in housing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2300704A1 (en) * 1973-01-08 1974-07-11 Eberspaecher J Catalytic exhaust gas purifier - has ceramics element with fired molybdenum coating supported by corrugated tube
DE2525661A1 (en) * 1974-06-10 1975-12-18 Engelhard Min & Chem GAS PURIFICATION DEVICE, IN PARTICULAR FOR CATALYTIC GAS PURIFICATION
DE2458994A1 (en) * 1974-12-13 1976-06-16 Eberspaecher J Exhaust purifier with ceramic catalyst carrier - has overlapping foils between carrier and ceramic fibre jacket in housing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3908887A1 (en) * 1989-03-17 1990-09-20 Eberspaecher J DEVICE FOR CATALYTIC DETOXIFICATION OR THE LIKE OF COMBUSTION ENGINE EXHAUST WITH TWO EXHAUST TREATMENT BODIES AND A PROTECTIVE RING BETWEEN
DE3930680A1 (en) * 1989-09-14 1991-03-28 Behr Gmbh & Co Radial and axial movements of expanding exhaust purifier - matrix in housing are permitted by fixed and mobile supports incorporating spring strips
DE4103571A1 (en) * 1991-02-06 1992-08-13 Roth Technik Gmbh Exhaust converter - has sealing element protecting external face of catalyst materials housing from hot exhaust gases
CN103946493A (en) * 2011-11-22 2014-07-23 斯堪尼亚商用车有限公司 Arrangement for fitting an exhaust cleaning unit in an exhaust passage
JP2015505926A (en) * 2011-11-22 2015-02-26 スカニア シーブイ アクチボラグ Device for fitting exhaust purification unit in exhaust passage
US9518500B2 (en) 2011-11-22 2016-12-13 Scania Cv Ab Arrangement for fitting an exhaust cleaning unit in an exhaust passage
CN103946493B (en) * 2011-11-22 2018-02-16 斯堪尼亚商用车有限公司 By the assembling device of Exhaust gas purifying unit assembling in an exhaust gas
DE102022106603A1 (en) 2022-03-22 2023-09-28 Purem GmbH Exhaust gas treatment arrangement
US11913368B2 (en) 2022-03-22 2024-02-27 Purem GmbH Exhaust gas treatment arrangement

Similar Documents

Publication Publication Date Title
DE69623556T2 (en) Monolithic catalyst and process for its manufacture
DE102008052552B4 (en) Turbine housing and method for its production
DE69115777T2 (en) Mounting system for diesel particle filters
DE3007868C2 (en)
DE2412567C3 (en) Catalytic exhaust gas detoxifier
DE3126359C2 (en) Retaining ring for guide vanes of a gas turbine engine
DE69213688T2 (en) Catalytic combustion device
DE2314465A1 (en) DEVICE FOR CATALYTIC EXHAUST GAS CLEANING
DE8914799U1 (en) EXHAUST GAS PURIFICATION DEVICE
DE3908887A1 (en) DEVICE FOR CATALYTIC DETOXIFICATION OR THE LIKE OF COMBUSTION ENGINE EXHAUST WITH TWO EXHAUST TREATMENT BODIES AND A PROTECTIVE RING BETWEEN
DE3510230A1 (en) COMBUSTION CHAMBER
EP0508145B1 (en) Exhaust pipe with air gap insulation
DE3727217A1 (en) CATALYTIC CONVERTER AND SUBSTRATE SUPPORT
EP0316595A1 (en) Carrier for a catalytic reactor for cleaning flue gas
WO2001079669A1 (en) Housing with a passivation layer and method for producing a catalyst support body with a housing of this type
DE3632059C1 (en) Holding device for the monoliths of an exhaust gas catalyst
DE3930680C2 (en)
DE3926072C2 (en) Exhaust gas purification catalyst with elastic elements to compensate for longitudinal expansion
DE10191463B4 (en) Catalyst carrier body with sleeve and shortened jacket tube
EP0422356B1 (en) Double-walled pipe
EP0356907A2 (en) Carrier body for a catalytic reacter for cleaning exhaust gas
DE3521058C2 (en)
DE69629196T2 (en) CATALYST ARRANGEMENT
DE3203237A1 (en) Exhaust gas filter for internal combustion engines
EP1399655B1 (en) Sheathed mid-section of a catalyst housing

Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee