EP0034179B1 - Vorrichtung zur katalytischen reinigung der auspuffgase von brennkraftmaschinen und herstellungsverfahren dazu - Google Patents

Vorrichtung zur katalytischen reinigung der auspuffgase von brennkraftmaschinen und herstellungsverfahren dazu Download PDF

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Publication number
EP0034179B1
EP0034179B1 EP80901797A EP80901797A EP0034179B1 EP 0034179 B1 EP0034179 B1 EP 0034179B1 EP 80901797 A EP80901797 A EP 80901797A EP 80901797 A EP80901797 A EP 80901797A EP 0034179 B1 EP0034179 B1 EP 0034179B1
Authority
EP
European Patent Office
Prior art keywords
catalyst body
gas
annular space
casing
wound
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
EP80901797A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0034179A1 (de
Inventor
Enrique Santiago
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.)
Arvin Industries Deutschland GmbH
Original Assignee
Zeuna Starker 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 Zeuna Starker GmbH and Co KG filed Critical Zeuna Starker GmbH and Co KG
Publication of EP0034179A1 publication Critical patent/EP0034179A1/de
Application granted granted Critical
Publication of EP0034179B1 publication Critical patent/EP0034179B1/de
Expired 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

Definitions

  • the invention relates to a device for the catalytic cleaning of the exhaust gases from internal combustion engines, in which a monolithic catalyst body through which gas can flow in the axial direction inside a metal housing by means of inserts from a mesh made of metal wire tightly wound around the catalyst body against inner surfaces of the housing and / or with the latter firmly connected components is elastically supported and wherein the annular space between the catalyst body and the housing in the region of at least one axial longitudinal section is sealed gas-tight by means of an annular seal made of incombustible ceramic fiber material.
  • the invention further relates to a method for producing a gas-tight, elastic winding around the circumferential surface of a monolithic catalyst body through which gas can flow in the axial direction of a device for the catalytic cleaning of the exhaust gases from internal combustion engines, a mesh of metal wire being closely wound around the catalyst body in several layers, so that it fills the annular space between the catalyst body and a housing accommodating it in a compressed form, and an annular buffer made of incombustible ceramic fibers is produced by compressing the annular space for gas sealing of the annular space in the region of at least one axial length section.
  • the catalyst body is provided in the region of its two front ends with a double-layer corrugated wire knit wrap that extends over less than half the axial length and is used for the shockproof mounting of the catalyst body.
  • the annular space in the area between these two wraps is completely filled with incombustible ceramic fiber material, so that the annular space is sealed gas-tight and the exhaust gases are forced to flow through the catalyst body.
  • the shell surrounding the catalyst body thus consists of three parts, which makes their production complex; in addition, the axial hold of the two corrugated wire wraps is not ensured. Finally, it is difficult to match the compression of the fiber material with that of the corrugated wire wrap, so that a sufficient compression of the fiber material for a gas-tight seal is not ensured after a long period of operation. Since the elasticity of the fiber material decreases with increasing operating time, there is to be fear of blowing out the ring seal under the effect of the exhaust gas pulsation.
  • the present invention has for its object to provide a ring seal corresponding to the life of the device, which is particularly easy to manufacture.
  • the fiber material is wound in strip form between windings of the meshwork lying one above the other and is pressed there so tightly that it also penetrates the space inside the meshwork in a gas-tight manner.
  • Mesh and fiber material form a tightly penetrating connection, the fiber material being highly compressed between the wire meshes.
  • the meshes also act as reinforcement of the fiber material, which reliably prevents the fibers from being blown out.
  • this arrangement also has the advantage that the axial section filled with fiber material can be arranged at a distance from the front end of the catalyst body, so that the gas flow at the location of the ring seal only has a low flow rate that is gentle on the fiber material.
  • a particularly advantageous method for producing such an annular seal from fiber material and a winding made of meshwork is that the meshwork is wound layer by layer in the form of a band with a width approximately corresponding to the axial length of the catalyst body together with one or more strip-shaped supports made of fiber material .
  • the meshwork is wound layer by layer in the form of a band with a width approximately corresponding to the axial length of the catalyst body together with one or more strip-shaped supports made of fiber material .
  • two to five layers are generally suitable. Fiber material and meshwork are processed in this way by a single winding process, whereby metal wire and fibers penetrate each other intimately, so that an annular seal that resists the attack of the gases and their passage is formed.
  • a particularly inexpensive embodiment of the method according to the invention consists in that the meshwork in the form of a band a width corresponding approximately to the axial length of the catalyst body, which has one or more supports made of narrow strips of fiber material.
  • Such a band can overlap the two front edges of the catalyst body and thus simultaneously form an axial elastic support for the catalyst body; at the same time there is a firm axial hold of the wound tape.
  • a monolithic catalyst body 1 through which flow flows axially in the direction of arrow P, the structure of which forms the finest axial flow channels, is elastically supported in the interior of a steel housing 2 by means of an insert made of a mesh 3 made of heat-resistant metal wire.
  • the meshwork is wound in several layers and in a central area 4 is interspersed with a fiber material consisting of ceramic fibers, for example based on aluminum oxide or aluminum silicate. This forms an annular seal against the passage of the exhaust gases in the annular space between the peripheral surface of the catalyst body 1 and the housing 2.
  • the meshwork 3 is bent with the edges around the front edges of the catalyst body 1, so that the end faces 5 of the catalyst body are bent 6 axially supports.
  • a single component is used to produce such a holder and, at the same time, seal in the area of the annular space between the catalyst body 1 and the housing 2, namely a band 7 of mesh made of metal wire, which is shown in FIG.
  • a relatively narrow strip which is preferably arranged such that it covers a central axial section of the catalyst body, is generally sufficient.
  • the thickness of the strip measured perpendicular to the plane of the band 7 is approximately 1 mm or less.
  • Fig. 3 shows a schematic representation of a cross section through the band 7, the mesh being bent only at the edges, so that a closed, particularly strong, compressed end edge is formed in the region of the bends 6 of the winding.
  • the strip 8 is placed in the middle on the meshwork and in this area brings about a correspondingly higher compression of the insert between the catalyst body 1 and the metal housing 2.
  • FIG. 4 shows a cross section through a band 7 with edge sections of the meshwork folded over almost to the middle, two strips 8 of fiber material being placed in the middle region, one below and one above the two ends 9 of the meshwork.
  • the tape 7 is wrapped tightly in several layers around the catalyst body 1 and then pushed together with it into the metal housing, or in the case of a divided housing, arranged between the two housing half-shells with appropriate compression of the meshwork, particularly in the region of the front edges of the catalyst body and the strip of fiber material.

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)
EP80901797A 1979-09-01 1981-03-23 Vorrichtung zur katalytischen reinigung der auspuffgase von brennkraftmaschinen und herstellungsverfahren dazu Expired EP0034179B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2935470A DE2935470C2 (de) 1979-09-01 1979-09-01 Verfahren zum Herstellen einer gasdichten, elastischen Wicklung um die Umfangsfläche eines Katalysatorkörpers einer Vorrichtung zur katalytischen Reinigung der Auspuffgase von Brennkraftmaschine
DE2935470 1979-09-09

Publications (2)

Publication Number Publication Date
EP0034179A1 EP0034179A1 (de) 1981-08-26
EP0034179B1 true EP0034179B1 (de) 1983-10-12

Family

ID=6079887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80901797A Expired EP0034179B1 (de) 1979-09-01 1981-03-23 Vorrichtung zur katalytischen reinigung der auspuffgase von brennkraftmaschinen und herstellungsverfahren dazu

Country Status (8)

Country Link
US (1) US4629605A (enrdf_load_stackoverflow)
EP (1) EP0034179B1 (enrdf_load_stackoverflow)
JP (1) JPS6044494B2 (enrdf_load_stackoverflow)
DE (1) DE2935470C2 (enrdf_load_stackoverflow)
GB (1) GB2073042B (enrdf_load_stackoverflow)
IT (2) IT1129139B (enrdf_load_stackoverflow)
SE (1) SE443187B (enrdf_load_stackoverflow)
WO (1) WO1981000738A1 (enrdf_load_stackoverflow)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513726A1 (de) * 1985-04-17 1986-10-23 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von katalysatoren fuer die abgasentgiftung
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
DE3664361D1 (en) * 1985-07-25 1989-08-17 Interatom Mounting device for a metallic flue gas catalyst support body, and method of manufacturing it
US4969264A (en) * 1986-06-12 1990-11-13 Tennessee Gas Pipeline Company Catalytic converter and substrate support
US5118476A (en) * 1986-06-12 1992-06-02 Tennessee Gas Pipeline Company Catalytic converter and substrate support
SE456104B (sv) * 1986-06-16 1988-09-05 Sandvik Ab Anordning for katalytisk rening av avgaser fran forbrenningsmotor
US4794753A (en) * 1987-01-06 1989-01-03 General Electric Company Pressurized air support for catalytic reactor
DE3710299A1 (de) * 1987-03-28 1988-10-13 Eberspaecher J Anordnung zur halterung eines katalysators in einem gehaeuse im abgassystem eines mit fluessigem brennstoff betriebenen motors
ES2040854T3 (es) * 1987-06-18 1993-11-01 Fibre Techniques Limited Metodo de proteger y aislar un bloque de convertidor catalitico.
GB8714285D0 (en) * 1987-06-18 1987-07-22 Fibres Tech Ltd Fibrous material packaging
DE3872381D1 (de) * 1988-04-05 1992-07-30 Roth Technik Gmbh Drahtgestrick sowie verfahren zu dessen herstellung und vorrichtung zur durchfuehrung des verfahrens.
US4999168A (en) * 1989-05-01 1991-03-12 The Carborundum Company Crack resistant intumescent sheet material
US5207989A (en) * 1991-03-22 1993-05-04 Acs Industries, Inc. Seal for catalytic converter and method therefor
FI921889A7 (fi) * 1991-05-02 1992-11-03 Scambia Ind Dev Ag Katalysator foer katalytisk behandling av avgaser
US5331810A (en) * 1992-05-21 1994-07-26 Arvin Industries, Inc. Low thermal capacitance exhaust system for an internal combustion engine
KR950006447A (ko) * 1993-08-20 1995-03-21 테릴 켄트 쿠 알리 고온 밀봉재를 지닌 장착용 매트
US6116022A (en) * 1996-07-03 2000-09-12 Outboard Marine Corporation Catalytic reactor for marine application
US5730099A (en) * 1996-08-22 1998-03-24 Outboard Marine Corporation Reduced emission two-stroke engine and method of engine operation to reduce engine emission
GB9716493D0 (en) * 1997-08-05 1997-10-08 Forber Stephen M Composite metal mesh and ceramic fibre exhaust gas sealing and support mounting device for use with catalytic converting systems
RU2136911C1 (ru) * 1997-11-12 1999-09-10 Акционерное общество "АвтоВАЗ" Каталитический нейтрализатор отработавших газов двигателя внутреннего сгорания и способ его изготовления
DE10021166A1 (de) * 2000-04-29 2001-11-08 Univ Stuttgart Katalysator mit optimierter Durchströmung
FR2825117A1 (fr) * 2001-05-28 2002-11-29 Faurecia Sys Echappement Organe d'echappement pour une ligne d'echappement
US20030091479A1 (en) * 2001-11-09 2003-05-15 Zlatomir Kircanski High temperature resistant material
US20030129101A1 (en) * 2002-01-10 2003-07-10 Steven Zettel Catalytic monolith support system with improved thermal resistance and mechanical properties

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400443A1 (de) * 1974-01-05 1975-07-10 Erhardt Bischoff Fabrik Fuer K Vorrichtung zum reinigen der abgase von brennkraftmaschinen

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JPS4916611B1 (enrdf_load_stackoverflow) * 1971-03-13 1974-04-23
US4344921A (en) * 1972-03-21 1982-08-17 Zeuna-Staerker Kg Catalyzer for detoxifying exhaust gases from internal combustion engines
DE2213540C3 (de) * 1972-03-21 1974-06-12 Zeuna-Staerker Kg, 8900 Augsburg Katalysatorkörper zur Reinigung der Abgase von Brennkraftmaschinen und Verfahren zur Herstellung dieses Katalysators
DE2222663C3 (de) * 1972-05-09 1975-03-06 Zeuna-Staerker Kg, 8900 Augsburg Verfahren zur Herstellung einer Vorrichtung zur Reinigung der Abgase von Brennkraftmaschinen
JPS5148530B2 (enrdf_load_stackoverflow) * 1972-08-22 1976-12-21
GB1453439A (en) * 1973-01-13 1976-10-20 Ti Silencer Services Ltd Catalytic reactor for exhaust emission control
GB1474904A (en) * 1973-09-05 1977-05-25 Rubery Owen & Co Ltd Method of forming a casing or housing for a catalytic block for use in an exhaust system for an internal combustion engine
IN141845B (enrdf_load_stackoverflow) * 1973-09-26 1977-04-23 Engelhard Min & Chem
JPS5182089A (en) * 1975-01-09 1976-07-19 Kawabo Tekisutairu Kk Bunsansenryono nasennyoru madarasenshokusochi
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JPS5471769A (en) * 1977-11-18 1979-06-08 Mitsubishi Motors Corp Molding of holding element of monolith catalyst
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Also Published As

Publication number Publication date
DE2935470A1 (de) 1981-03-12
EP0034179A1 (de) 1981-08-26
SE8102689L (sv) 1981-04-29
IT8053484V0 (it) 1980-09-01
SE443187B (sv) 1986-02-17
JPS56501209A (enrdf_load_stackoverflow) 1981-08-27
GB2073042B (en) 1984-05-02
IT8068354A0 (it) 1980-09-01
WO1981000738A1 (fr) 1981-03-19
IT1129139B (it) 1986-06-04
US4629605A (en) 1986-12-16
GB2073042A (en) 1981-10-14
JPS6044494B2 (ja) 1985-10-03
DE2935470C2 (de) 1984-03-01
IT8053484U1 (it) 1982-03-01

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