DE2745841A1 - Cylindrical catalytic silencer - with springy axial and radial location - Google Patents

Cylindrical catalytic silencer - with springy axial and radial location

Info

Publication number
DE2745841A1
DE2745841A1 DE19772745841 DE2745841A DE2745841A1 DE 2745841 A1 DE2745841 A1 DE 2745841A1 DE 19772745841 DE19772745841 DE 19772745841 DE 2745841 A DE2745841 A DE 2745841A DE 2745841 A1 DE2745841 A1 DE 2745841A1
Authority
DE
Germany
Prior art keywords
inlet
catalyst
flange
cylindrical part
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.)
Ceased
Application number
DE19772745841
Other languages
German (de)
Inventor
Heribert Klein
Siegfried Ing Grad Woerner
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Priority to DE19772745841 priority Critical patent/DE2745841A1/en
Priority to IT27950/78A priority patent/IT1098902B/en
Publication of DE2745841A1 publication Critical patent/DE2745841A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust 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
    • F01N13/011—Exhaust 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 purifying devices arranged in parallel
    • F01N13/017—Exhaust 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 purifying devices arranged in parallel the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F01N3/2867—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing the mats or gaskets being placed at the front or end face of catalyst body
    • 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
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
    • 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
    • F01N2260/08—Exhaust treating devices having provisions not otherwise provided for for preventing heat loss or temperature drop, using other means than layers of heat-insulating material
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/14—Plurality of outlet tubes, e.g. in parallel or with different length
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/16—Plurality of inlet tubes, e.g. discharging into different chambers

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

Silencer for monolithic catalysts, used for I. C. engine exhaust systems is assembled from identical inlet and outlet cones, joined to a centre piece with the catalyst. Both cones terminate at the wide end in a flange which fits around a springy ring. After insertion of the catalyst these two joints are made by welding. Arrangement provides simple springy support for the catalyst which is suitable for mass prodn.

Description

Auspufftopf mit Katalysator-Monolithen Muffler with catalytic converter monoliths

Die Erfindung betrifft einen Auspufftopf von ovalen Querschnitt, bestehend aus einen zylindrischen Teil nit einen wabenförmig aufgebauten axial durchströmbaren Katalysator-Monolithen, welcher drittels einer Schicht aus einen federnden Werkstoff radial und an seinen stirnseitigen äußeren Randbereich mittels je einen Ring aus federnden Werkstoff axial gelagert ist und eine sich trichterförnig erweiternden Eingangsstutzen und einen sich trichterförmig verengenden Ausgangsstutzen, wobei sowohl der Eingangsstutzen als auch der Ausgangsetutzen Je zwei längs der großen Querschnittsachse nebeneinander liegende Abgaseintritts- bzw. Abgasaustrittsöffnungen aufweist.The invention relates to a muffler of oval cross-section, consisting from a cylindrical part with a honeycomb-like structure through which a flow can flow axially Catalyst monolith, which is a third of a layer made of a resilient material radially and at its end face outer edge area by means of a ring each resilient material is axially mounted and a funnel-shaped widening Inlet nozzle and a funnel-shaped narrowing outlet nozzle, wherein Both the inlet nozzle and the outlet nozzle, two each along the large one Cross-sectional axis adjacent exhaust gas inlet and exhaust gas outlet openings having.

Schalldänpfer von ovalen z.B. elliptischen Querschnitt sind bekannt. Sie werden wegen der leichteren Unterbringung unter Kraftfahrzeugen sowohl als Vorschalldämpfer als auch als Mittelschalldämpfer verwendet. Bei der Verwendung von zwei parallel nebeneinander liegenden Abgaszuführungsrohren ist diese Querschnittsform auch aus Strömungsgründen besonders günstig. Wabenförnig aufgebaute axial durchetränbare Katalysator-Monolithen werden s.B. nach den DT-OS 22 45 535 und 24 12 863 axial in einen ungeteilten Gehäusemantel eingeschoben. Zur radialen Lagerung des Monolithen wird dabei ein nachgiebiger Überzug und zur axialen Lagerung je ein an stirnseitigen äußeren Randbereich des Monolithen anliegender federnder Ring verwendet.Sound absorbers of oval, e.g., elliptical, cross-section are known. Because they are easier to accommodate under motor vehicles, they are used both as front silencers as well as used as a middle silencer. When using two in parallel This cross-sectional shape is also made of adjacent exhaust gas supply pipes Particularly favorable for flow reasons. Honeycomb structure, axially penetrable Catalyst monoliths are s.B. according to DT-OS 22 45 535 and 24 12 863 axial inserted into an undivided housing shell. For radial mounting of the monolith is a flexible coating and for axial mounting one on the end face outer edge area of the monolith adjoining resilient ring used.

Der Erfindung liegt die Aufgabe zugrunde, unter Berticksichtigung dieser bekannten Maßnahmen eine für Massenfertigung geeignete Bauform eines Auspufftopfes Mit Katalysator-Monolithen aufzuzeigen.The invention is based on the object, taking into account of these known measures a design of a muffler suitable for mass production To be shown with catalyst monoliths.

Diese Aufgabe wird durch einen Auspufftopf nach den kennzeichnenden Merknalen des Anspruches 1 gelöst.This task is carried out by a muffler according to the characteristic Features of claim 1 solved.

Die Ausbildung von Eingangsstutzen und Ausgangsstutzen als gleichartige Preßstücke, die sich nur in der Länge des zylindrischen Teiles unterscheiden, ist im Hinblick auf Herstellung und Lagerhaltung vorteilhaft. Die trichterförsige Verengung dieser beiden Gehäuse zum freien Ende hin, ergibt eine gute Zuströmung und Abströmung am Katalysator-Monolithen.The formation of inlet connection and output connection as similar Pressings that differ only in the length of the cylindrical part is advantageous in terms of manufacture and storage. The funnel-shaped constriction of these two housings towards the free end, there is a good inflow and outflow on the catalyst monolith.

Die Montage wird ebenfalls besonders einfach dadurch, daß der Katalysator lediglich in den Eingangsstutzen mit den zylindrischen Teil eingeschoben wird und daß sodann der Ausgangsstutzen nit jeweils zuvor eingelegtes federnden Ring aufgesetzt und verschweißt wird.The assembly is also particularly simple in that the catalytic converter is only pushed into the inlet connection with the cylindrical part and that then the outlet nozzle is fitted with a previously inserted resilient ring and is welded.

Durch das Merknal des Anspruches 2 wird in besonders vorteilhafter Weise eins Anordnung geschaffen, bei der der geneineane Eingangsflansch bzw. die Ausgangsrohre durch Aufstecken angebracht werden können.The feature of claim 2 is particularly advantageous Way one arrangement created in which the geneineane inlet flange or the Outlet pipes can be attached by clipping.

Durch das Merkmal des Anspruches 3 wird die Zuströmung und Abströmung am Katalysator-Monolithen wesentlich verbessert. Damit ist erreicht, daß nicht nur die Herstellung des Auspufftopfes in besonders einfacher Weise erfolgen kann, sondern auch, daß der Zusammenbau und das Einbringen des Monolithen in sehr einfacher Weise nöglich ist, so daß neben der Herstellungszeit auch die Montagezeit wesentlich herabgesetzt werden kann.The feature of claim 3 is the inflow and outflow Significantly improved on the catalyst monolith. This not only achieves that the production of the muffler can be done in a particularly simple manner, but also that the assembly and the introduction of the monolith in a very simple manner is possible, so that in addition to the production time, the assembly time is also significantly reduced can be.

Dabei ist trotzdei sichergestellt, daß durch die eingebrachten federnden Ringe in ebenfalls sehr einfacher Weise die radiale und axiale Halterung des Katalysators gewährleistet ist.In spite of this, it is ensured that the resilient Rings the radial and axial mounting of the catalytic converter in a very simple way is guaranteed.

Der zu schützende Auspuff topf wird nun anhand der Zeichnung mit einen Ausführungsbeispiel näher erläutert. Dabei zeigt Fig. 1 einen Längsschnitt durch den Auspufftopf, Fig. 2 einen Längsschnitt gesäß Linie II-II in Fig. 1, wobei die Trennwände weggelassen sind und Fig. 3 eine Stirnansicht in Richtung III in Fig. 1, wobei der Eingangsflansch weggelassen ist.The exhaust to be protected is now based on the drawing with a Embodiment explained in more detail. 1 shows a longitudinal section through the muffler, Fig. 2 shows a longitudinal section along the line II-II in Fig. 1, the Partition walls are omitted and FIG. 3 shows an end view in the direction III in FIG. 1, with the inlet flange omitted.

Gesäß Fig. 1 ist ein wabenförnig aufgebauter axial durchströbarer Katalysator-Monolith 1 über eine Schicht 3 z.B. in Forr einer Matte aus federnden Werkstoff in einen ungeteilten Mantel 2, der von der Verlängerung des zylindrischen Ansatzes 6d des Eingangsgehäuses 6 gebildet ist, radial gelagert. Der Monolith ist ferner Uber je einen an seinen stirnssitigen äußeren Randbereich anliegenden Ring 4 bzw. Ring 3 aus federnden Werkstoff z.B. aus Drahtgeflecht zwischen einen Eingangsgehäuse 6 und einen Ausgangsgehäuse 7 axial gelagert. Diese Gehäuse sind als übereinstimmende Preßstücke gebildet, die sich lediglich in der Länge des zylindrischen Teiles 2 unterscheiden, wobei es jedoch auch denkbar ist, daß der zylindrische Teil 2 jeweils zur Hälfte an den Eingangsstutzen 6 und an den Ausgangsstutzen 7 angeformt ist, so daß zwei identische Teile entstehen, in die der Katalysator eingesetzt wird. Eingangsgehäuse 6 und Ausgangsgehäuse 7 sind an sich bekannter Weise zun freien Ende hin trichterförmig verengt, die dort längs der großen Querschnittsachse des Auspufftopfes liegenden beiden Öffnungen von kreisförnigem Querschnitt weisen aufgebördelte Ränder 6a, 6b bzw. 7a, 7b auf; auf diese können ein geneinsaner Eingangsflansch 8 bzw. zwei Ausgangsrohre aufgesetzt werden. An inneren Ende sind die Gehäuse zum einen in der Querebene liegenden Flansch 7c bzw. 6c nach außen aufgebogen. Diese Flansche liegen an je einem Ring 4 bzw. 5 aus federndem Werkstoff z.B. Drahtgeflecht axial an und laufen jenen ungreifend in einen zylindrischen Ansatz 6d bzw. 7d aus, der den Mantel umgreifend bzw. gegen diesen stoßend mit diesem z.B. durch Schweißen verbunden ist. Innerhalb des Eingangsgehäuses 6 und Ausgangsgehäuses 7 kann schließlich eine sich vom zwischen den aufgebördelten Rändern 6a, 6b bzw. 7a, 7b verbleibenden Steg 6e bzw. 7e bis nahe an die Stirnseite des Katalysator-Monolithen 1 erstreckende in der Längsmittelebene liegende Trennwand 9 bzw. 10 z.B. durch Schweißen befestigt sein.According to FIG. 1, a honeycomb structure which can be axially traversed Catalyst monolith 1 over a layer 3, e.g. in the form of a mat made of resilient Material in an undivided jacket 2, which is from the extension of the cylindrical Approach 6d of the input housing 6 is formed, mounted radially. The monolith is furthermore via a respective ring resting on its end face, outer edge area 4 or ring 3 made of resilient material e.g. made of wire mesh between an input housing 6 and an output housing 7 axially supported. These housings are considered to be mismatched Pressed pieces formed, which are only in the length of the cylindrical part 2 differ, but it is also conceivable that the cylindrical part 2 in each case is molded halfway onto the inlet connector 6 and the other half onto the outlet connector 7, so that two identical parts are created in which the catalyst is used. Input housing 6 and output housing 7 are known per se to free The end narrows in the shape of a funnel, which is there along the large cross-sectional axis of the The two openings of a circular cross-section have flared openings in the muffler Edges 6a, 6b or 7a, 7b; A common inlet flange can be attached to this 8 or two output tubes are placed. At the inner end are the housings for a flange 7c or 6c lying in the transverse plane is bent outwards. These Flanges each rest on a ring 4 or 5 made of resilient material, e.g. wire mesh axially and run out of those unreaching in a cylindrical extension 6d or 7d, which encompasses the jacket or butts against it with it, e.g. by welding connected is. Finally, within the input housing 6 and output housing 7 one remaining between the flared edges 6a, 6b and 7a, 7b Web 6e or 7e extending to close to the end face of the catalyst monolith 1 Partition wall 9 or 10 located in the longitudinal center plane e.g. through Welding be attached.

LeerseiteBlank page

Claims (3)

Patentansprüche Auspufftopf von ovalem Querschnitt, bestehend aus einem zylindrischen Teil mit einem wabenförmig aufgebauten axial durchströmbaren Katalysator-Monolithen, welcher mittels einer Schicht aus einem federnden Werkstoff radial und an seinen stirnseitigen äußeren Randbereichen mittels je einem Ring aus federndem Werkstoff axial gelagert ist und einem sich trichterförmig erweiternden Eingangsstutzen und einem sich trichterförmig verengenden Ausgangsstutzen, wobei sowohl der Fingangsstutzen als auch der Ausgangsstutzen je zwei längs der großen Querschnittsachse nebeneinander liegende Abgaseintritts- bzw. Abgasaustrittsöffnungen aufweist, dadurch gekennzeichnet, daß der zylindrische Teil (2) und der Eingangsstutzen (6) einstückig ausgebildet und der Ausgangsstutzen (7) mit dem zylindrischen Teil nach dem Einsetzen des Katalysators fest verbunden ist, wobei bei dem Eingangsstutzen (6) der Übergang zu dem zylindrischen Teil (2) über einen in der Querebene liegenden Abschnitt (6c) erfolgt, der zugleich als Anlageflansch für den, den Katalysator (1) haltenden federnden Ring (4) dient und der Ausgang.sstutzen (7) ebenfalls an seinem dem Katalysator (1) zugewandten Seite zu einem in der Querebene liegenden Flansch (7c) nach außen aufgebogen ist, wobei dieser Flansch (7c) an dem den Katalysator (1) haltenden federnden Ring (5) anliegt. Claims muffler of oval cross-section, consisting of a cylindrical part with a honeycomb-like structure through which a flow can flow axially Catalyst monolith, which by means of a layer made of a resilient material radially and at its end-face outer edge areas by means of a ring each resilient material is axially mounted and a funnel-shaped widening Inlet nozzle and a funnel-shaped narrowing outlet nozzle, wherein both the inlet connection and the output connection two each along the large one Cross-sectional axis adjacent exhaust gas inlet and exhaust gas outlet openings , characterized in that the cylindrical part (2) and the inlet connection (6) formed in one piece and the outlet connection (7) with the cylindrical part is firmly connected after the catalyst has been inserted, with the inlet port (6) the transition to the cylindrical part (2) via one lying in the transverse plane Section (6c) takes place, which is also used as a contact flange for the, the catalyst (1) holding resilient ring (4) is used and the output connector (7) also on its side facing the catalytic converter (1) to one lying in the transverse plane Flange (7c) is bent outwards, this flange (7c) on which the catalyst (1) holding resilient ring (5) rests. 2. JuspIlfRtopf nach Anspruch 1, dadurch gekennzeichnet, daß die in dem Eil1gangsstutzen (6) nebeneinander liegenden zwei Abgaseintrittsöffnungen an ihren ändern zum Aufsetzen eines gemeinsamen Eingangsflansches (8) je eine Aufbördelung (6a, 6b) und in gleicher Weise die Abgasaustrittsöffnungen an ihren ändern je eine Aufbördelung (7a, 7b) zur Aufnahme zweier Ausgangsrohre aufweisen.2. JuspIlfRtopf according to claim 1, characterized in that the in two exhaust gas inlet openings lying next to one another are adjacent to the rapid passage nozzle (6) their change for placing a common inlet flange (8) each with a flare (6a, 6b) and in the same way the exhaust gas outlet openings at their change one each Have flanges (7a, 7b) for receiving two output tubes. 3. Auspufftopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß innerhalb des Eingangsstutzens (6) und des Ausgangsstutzens (7) je eine in der Längsmittelebene liegende Trennwand (9 bzw. 10), die sich vom zwischen den aufgebördelten ändern (6a, 6b bzw. 7a, 7b) verbleibenden Steg (6e bzw.3. muffler according to claim 1 or 2, characterized in that within the inlet connection (6) and the output connection (7) one each in the longitudinal center plane lying partition (9 or 10), which change from between the flared (6a, 6b or 7a, 7b) remaining web (6e or 7e) bis nahe an die Stirnseite des Katalysators (1) erstreckt. 7e) extends close to the end face of the catalytic converter (1).
DE19772745841 1977-10-12 1977-10-12 Cylindrical catalytic silencer - with springy axial and radial location Ceased DE2745841A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19772745841 DE2745841A1 (en) 1977-10-12 1977-10-12 Cylindrical catalytic silencer - with springy axial and radial location
IT27950/78A IT1098902B (en) 1977-10-12 1978-09-21 EXHAUST EXHAUST SYSTEM FOR MOTOR VEHICLES WITH MONOLITHIC CATALYST

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772745841 DE2745841A1 (en) 1977-10-12 1977-10-12 Cylindrical catalytic silencer - with springy axial and radial location

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DE2745841A1 true DE2745841A1 (en) 1979-04-19

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IT (1) IT1098902B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316823A (en) * 1979-11-20 1982-02-23 Degussa Aktiengesellschaft Method of manufacturing a monolithic metallic matrix coated with a catalysis promoting metal oxide
US4433064A (en) * 1980-02-19 1984-02-21 Johnson Matthey Public Limited Company Method for imparting resistance to axial displacement of convolutions in a convoluted catalyst substrate
EP0753651A1 (en) * 1995-07-08 1997-01-15 Adam Opel Ag Exhaust system of a multicylinder internal combustion engine
WO1997001698A1 (en) * 1995-06-28 1997-01-16 Emitec Gesellschaft Für Emissionstechnologie Mbh Catalyser arrangement with twin-path or multiple path exhaust channelling
EP0757163A1 (en) * 1995-08-04 1997-02-05 LEISTRITZ AG & CO. Abgastechnik Catalyst housing
FR2801070A1 (en) * 1999-11-12 2001-05-18 Renault Engine exhaust system has catalyst box partitioned in two, with parallel exhaust inlet connections
EP1108121A1 (en) * 1998-08-18 2001-06-20 Gregory M. Marocco Catalytic converter and resonator combination
DE10324618B4 (en) * 2003-05-28 2006-01-26 J. Eberspächer GmbH & Co. KG Exhaust system of a particular motor vehicle internal combustion engine
DE102012017178A1 (en) * 2012-03-10 2013-09-12 Volkswagen Aktiengesellschaft exhaust gas purification device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316823A (en) * 1979-11-20 1982-02-23 Degussa Aktiengesellschaft Method of manufacturing a monolithic metallic matrix coated with a catalysis promoting metal oxide
US4433064A (en) * 1980-02-19 1984-02-21 Johnson Matthey Public Limited Company Method for imparting resistance to axial displacement of convolutions in a convoluted catalyst substrate
WO1997001698A1 (en) * 1995-06-28 1997-01-16 Emitec Gesellschaft Für Emissionstechnologie Mbh Catalyser arrangement with twin-path or multiple path exhaust channelling
US5976473A (en) * 1995-06-28 1999-11-02 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Catalytic converter configuration with two or multiple-line exhaust conduction
EP0753651A1 (en) * 1995-07-08 1997-01-15 Adam Opel Ag Exhaust system of a multicylinder internal combustion engine
EP0757163A1 (en) * 1995-08-04 1997-02-05 LEISTRITZ AG & CO. Abgastechnik Catalyst housing
EP1108121A1 (en) * 1998-08-18 2001-06-20 Gregory M. Marocco Catalytic converter and resonator combination
EP1108121A4 (en) * 1998-08-18 2004-04-21 Gregory M Marocco Catalytic converter and resonator combination
FR2801070A1 (en) * 1999-11-12 2001-05-18 Renault Engine exhaust system has catalyst box partitioned in two, with parallel exhaust inlet connections
DE10324618B4 (en) * 2003-05-28 2006-01-26 J. Eberspächer GmbH & Co. KG Exhaust system of a particular motor vehicle internal combustion engine
DE102012017178A1 (en) * 2012-03-10 2013-09-12 Volkswagen Aktiengesellschaft exhaust gas purification device

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IT7827950A0 (en) 1978-09-21
IT1098902B (en) 1985-09-18

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