EP0285027B1 - Anordnung zur Halterung eines Katalysators in einem Gehäuse im Abgassystem eines mit flüssigem Brennstoff betriebenen Motors - Google Patents

Anordnung zur Halterung eines Katalysators in einem Gehäuse im Abgassystem eines mit flüssigem Brennstoff betriebenen Motors Download PDF

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Publication number
EP0285027B1
EP0285027B1 EP88104839A EP88104839A EP0285027B1 EP 0285027 B1 EP0285027 B1 EP 0285027B1 EP 88104839 A EP88104839 A EP 88104839A EP 88104839 A EP88104839 A EP 88104839A EP 0285027 B1 EP0285027 B1 EP 0285027B1
Authority
EP
European Patent Office
Prior art keywords
sealing strip
arrangement according
catalyst body
supporting member
supporting arrangement
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 - Lifetime
Application number
EP88104839A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0285027A3 (en
EP0285027A2 (de
Inventor
Georg Wirth
Siegfried Wörner
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
Publication of EP0285027A2 publication Critical patent/EP0285027A2/de
Publication of EP0285027A3 publication Critical patent/EP0285027A3/de
Application granted granted Critical
Publication of EP0285027B1 publication Critical patent/EP0285027B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • F01N2350/04—Fitting ceramic monoliths in a metallic housing with means compensating thermal expansion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • F01N2350/06—Fitting ceramic monoliths in a metallic housing with means preventing gas flow by-pass or leakage

Definitions

  • the holding element is continuously a metal knitted fabric, that is also in the section where the sealing strip is arranged.
  • An analog bracket arrangement is also known from document DE-A-35 19 965.
  • the invention has for its object to provide a mounting arrangement of the type mentioned, which is simple to manufacture and assemble, since it is a mass article, and in which the tightness against flowing exhaust gas with simple means in a against destruction of the sealing strip secured way.
  • the sealing strip does not lie on a rough knitted surface, and this prevents the sealing strip from rubbing against the knitting, which could lead to a gradual destruction of the sealing strip and the loss of the sealing effect.
  • the sealing strip in that section of the holding element into which the sealing strip is introduced, viewed in the longitudinal section of the arrangement, there can be smooth, preferably parallel, metallic threads which connect the adjacent knitted parts, these threads being those from which the Knitted fabric is formed.
  • This section runs in the longitudinal direction of the holding element, the width of the holding element roughly corresponding to the length of the catalyst body around which the holding element is wound, specifically in one or more layers.
  • the sealing strip lies transversely to the flow direction of the exhaust gas around the catalyst body.
  • the holding element can be a hose knitted from metallic threads, which is not formed as a knitted fabric on the section for receiving the sealing strip, but instead has straight threads, and which is then pressed together to form a flat, two-layer holding element, the knitting-free sections then with their straight threads lie on top of each other and thus form the section for receiving the sealing element.
  • the holding element can also be designed as a correspondingly long, single-layer element, e.g. with a length equal to or greater than twice the circumference of the catalyst body. In this case, the catalyst body is surrounded by the holding element in such a way that a two-layer coating is produced.
  • a further development of the invention is characterized in that at least one sealing strip is introduced above or below or between the undeformed metallic threads of the knitted fabric.
  • the sealing strip is inserted into the section provided for receiving the sealing strip before the catalyst body is wrapped around, and it can be placed on or under the straight threads.
  • the sealing strip can already be inserted into the section provided for this purpose when the hose is pressed together, so that it lies between the straight threads.
  • a further sealing strip can be placed in the section with the straight threads on the sealing strips already introduced before the catalyst body is wrapped around it, so that a double sealing strip is inserted after the catalyst body has been wrapped.
  • the thickness of the sealing strip can be equal to or less than the height of the corrugation of the knitted fabric at the sections adjacent to the receiving of the sealing strip.
  • an embodiment of the mounting arrangement according to the invention is shown in simplified and schematic form, using the example of mounting a catalytically coated monolith in the exhaust pipe of a vehicle.
  • a body 1 which is a catalytically coated monolith with a large number of very fine longitudinal channels, is to be arranged and held in a pipeline 11, in the present case the exhaust pipe of a vehicle. It should also flow around the body pers 1 with exhaust gas can be prevented as far as possible and the bracket must be sufficient in all operating conditions. Despite the different coefficients of expansion of the housing (steel) and body 1 (ceramic), the holder should be effective at the different temperatures, that is to say in a range from approximately 800 to 900 ° C.
  • the exhaust pipe 11 has an inlet funnel 3a in the direction of flow, to which the cylindrical housing adjoins, in which the body 1 is held.
  • the housing 2 can be connected to the inlet funnel 3a with a larger diameter, so that a contact edge is formed.
  • the outlet funnel 3b connects to the housing 2 with the following pipeline.
  • the housing 2 is either welded to the two funnels 3a, 3b or connected via flanges.
  • the cylindrical housing 2 has circumferential impressions 12 which either run parallel to one another or are stamped in a spiral. This indentation 12 causes the pressing of the holding element 4, which surrounds the body 1.
  • the holding element 4 consists of a 2-ply tubular knitted fabric made of wire with a diameter of 0.23 mm and made of Inconel 601 or Nicrofer 6023 and having a knitted width of 95 mm and 60 stitches, which is compressed into a flat element.
  • the holding element 4 has an arrow-shaped indentation 5 on both sides. This creates a corrugation with a pitch of 10.5 mm and a height of the knitted fabric of 6.5 mm (corrugation h), the arrow path on both sides is 72 to the edge.
  • the holding element 4 is provided in a longitudinal axis 8 with a section 9, in which a sealing strip 10 with the thickness d is inserted.
  • this longitudinal axis 8 runs at right angles to the flow direction of the catalyst to be held.
  • the threads 13 of the knitted fabric 14 run in a straight, undeformed manner, so that they form support webs for the sealing strip (s) 10 or 10a, 10b and contribute to the holding of the sealing strip 10, since in operation these "webs" 13 are in the surface of the sealing strip 10.
  • the sealing strip 10 can also be interwoven with the straight threads 13 of the knitted fabric 14, so that one thread 13 lies above and the next thread 13 lies below the sealing strip 10. This provides a particularly good position fixation of the sealing strip 10 in the holding element 4. A similar effect is obtained with a hose-like holding element 4, which is then compressed into a flat element, if the sealing strip 10 is inserted into the section 9 provided for the sealing strip 10 before it is pressed together. In this case, there is a layer of the threads 13 and a layer under the sealing strip 10.
  • the section 9 does not need to be arranged in the center, as shown in the figures, but can also run eccentrically in the longitudinal direction of the holding element 4, namely parallel to the longitudinal direction or obliquely thereto.
  • the holding element 4 is wider than the length of the body 1, so that it protrudes on these two end faces when enveloping the body 1. After assembly, these projecting sections lie over the respective front edge of the body 1 and form both an edge protector and a first seal against flow around the body 1 by the exhaust gas.
  • the arrow-shaped impressions 5 result in a better mounting of the body 1 and in particular prevents an oblique displacement of the body 1. Furthermore, this measure interrupts the flow path for the exhaust gas and thus also provides a sealing effect.
  • the threads 13 of the knitted fabric 14 in section 9 can alternatively be deformed in the development plane of FIG. 2, but they are not bent out of this plane and are therefore not deformed there into the corrugated knitted shape.
  • the threads 13 of the knitted fabric 14 can be provided in the section 9, in contrast to that shown in FIG. Then a sealing ring 10a is sufficient radially outside of section 9. Another alternative is to provide the threads 13 lying radially on the outside of the housing 2, so that a radially inner sealing ring 10b is sufficient.
  • the sealing strip 10 can either be attached together with the attachment of the holding element 4 or after the attachment of the holding element 4.
  • the possibility of retrofitting also exists if the holding element 4 is attached to the catalyst body 1 by simply or repeatedly wrapping it around, in particular in the sequence of operations that the holding element 4 is first wrapped around the catalyst body 1 approximately twice and only after that a sealing strip 10 from is inserted from the outside in section 9.
  • the procedure can be such that the threads 13 are pressed inwards against the catalyst body 1 by inserting the sealing strip 10. This inward pressing of the threads 13 can also take place in the case shown in FIG. 1, in which the threads 13 per se radially approximately in the middle between the catalyst body 1 and the Ge house 2 lie.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
EP88104839A 1987-03-28 1988-03-25 Anordnung zur Halterung eines Katalysators in einem Gehäuse im Abgassystem eines mit flüssigem Brennstoff betriebenen Motors Expired - Lifetime EP0285027B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873710299 DE3710299A1 (de) 1987-03-28 1987-03-28 Anordnung zur halterung eines katalysators in einem gehaeuse im abgassystem eines mit fluessigem brennstoff betriebenen motors
DE3710299 1987-03-28

Publications (3)

Publication Number Publication Date
EP0285027A2 EP0285027A2 (de) 1988-10-05
EP0285027A3 EP0285027A3 (en) 1989-05-10
EP0285027B1 true EP0285027B1 (de) 1992-07-15

Family

ID=6324236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104839A Expired - Lifetime EP0285027B1 (de) 1987-03-28 1988-03-25 Anordnung zur Halterung eines Katalysators in einem Gehäuse im Abgassystem eines mit flüssigem Brennstoff betriebenen Motors

Country Status (5)

Country Link
US (1) US4958491A (enrdf_load_stackoverflow)
EP (1) EP0285027B1 (enrdf_load_stackoverflow)
CZ (1) CZ278210B6 (enrdf_load_stackoverflow)
DE (3) DE8717839U1 (enrdf_load_stackoverflow)
ES (1) ES2033968T3 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929205A1 (de) * 1989-09-02 1991-03-21 Leistritz Ag Abgasvorrichtung, insbes. abgasreinigungsvorrichtung
DE4218198C2 (de) * 1992-06-03 1994-08-18 Manfred Sagitzki Katalysator-Gehäuse
DE4305198C1 (de) * 1993-02-19 1994-05-11 Zeuna Staerker Kg Katalytische Abgasreinigungsvorrichtung
SE9301653D0 (sv) * 1993-05-14 1993-05-14 Filterprodukter Ab Katalysatorbaerare samt anvaendning av denna
JP3216545B2 (ja) * 1996-01-26 2001-10-09 トヨタ自動車株式会社 内燃機関の排気浄化用触媒装置
US6017498A (en) * 1998-01-14 2000-01-25 Metex Mfg. Corporation Catalytic converter support device
EP1236872B1 (de) * 2001-02-20 2003-12-17 Zeuna-Stärker Gmbh & Co Kg Abgasreinigungsvorrichtung
FR2825117A1 (fr) * 2001-05-28 2002-11-29 Faurecia Sys Echappement Organe d'echappement pour une ligne d'echappement
US7378060B2 (en) * 2005-02-04 2008-05-27 Ford Global Technologies, Llc Support seal for positive retention of catalytic converter substrate and method therefor
WO2017165973A1 (en) 2016-03-30 2017-10-05 Marine Canada Acquisition Inc. Vehicle heater and controls therefor
US10480387B2 (en) * 2017-02-08 2019-11-19 Caterpillar Inc. Housing for aftertreatment systems

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335077A (en) * 1972-03-21 1982-06-15 Zeuna-Staerker Kg Catalyzer for detoxifying exhaust gases from internal combustion engines
SE7710455L (sv) * 1976-12-18 1978-06-19 Zeuna Staerker Kg Anordning for katalytisk rening av fran forbrenningsmotorer kommande avgaser
DE2935470C2 (de) * 1979-09-01 1984-03-01 Zeuna-Stärker GmbH & Co KG, 8900 Augsburg Verfahren zum Herstellen einer gasdichten, elastischen Wicklung um die Umfangsfläche eines Katalysatorkörpers einer Vorrichtung zur katalytischen Reinigung der Auspuffgase von Brennkraftmaschine
US4343074A (en) * 1979-10-22 1982-08-10 Uop Inc. Method of making a catalytic converter
DE8019814U1 (de) * 1980-07-24 1980-10-30 Paul Gillet Gmbh, 6732 Edenkoben Vorrichtung zur lagerung von katalysatorbloecken zur abgasreinigung in auspuffanlagen fuer verbrennungsmotoren
JPS58221071A (ja) * 1982-06-15 1983-12-22 Toyota Motor Corp 弾性保持／シ−ル部材及びその製造方法
JPS5941621A (ja) * 1982-08-31 1984-03-07 Toyota Motor Corp モノリス触媒コンバ−タ
DE3519965C3 (de) * 1985-06-04 1993-12-23 Eberspaecher J Anordnung zur Halterung eines Katalysators in einem Gehäuse eines Abgassystems eines mit flüssigem Brennstoff betriebenen Motors
US4782661A (en) * 1987-02-13 1988-11-08 General Motors Corporation Mat support/substrate subassembly and method of making a catalytic converter therewith

Also Published As

Publication number Publication date
DE3710299C2 (enrdf_load_stackoverflow) 1990-11-22
DE3710299A1 (de) 1988-10-13
EP0285027A3 (en) 1989-05-10
CZ204788A3 (en) 1993-05-12
EP0285027A2 (de) 1988-10-05
DE3872743D1 (de) 1992-08-20
CZ278210B6 (en) 1993-10-13
US4958491A (en) 1990-09-25
DE8717839U1 (de) 1990-05-31
ES2033968T3 (es) 1993-04-01

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