EP0471175A1 - Procédé pour la fabrication d'un dispositif pour la purification catalytique ou la décomposition de gaz d'échappement chauds - Google Patents

Procédé pour la fabrication d'un dispositif pour la purification catalytique ou la décomposition de gaz d'échappement chauds Download PDF

Info

Publication number
EP0471175A1
EP0471175A1 EP91110837A EP91110837A EP0471175A1 EP 0471175 A1 EP0471175 A1 EP 0471175A1 EP 91110837 A EP91110837 A EP 91110837A EP 91110837 A EP91110837 A EP 91110837A EP 0471175 A1 EP0471175 A1 EP 0471175A1
Authority
EP
European Patent Office
Prior art keywords
housing
catalyst body
catalyst
annular
end faces
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.)
Granted
Application number
EP91110837A
Other languages
German (de)
English (en)
Other versions
EP0471175B1 (fr
Inventor
Rainer Diez
Thomas Dipl.-Ing. Sommer
Dieter Bozian
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.)
Friedrich Boysen GmbH and Co KG
Original Assignee
Friedrich Boysen 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 Friedrich Boysen GmbH and Co KG filed Critical Friedrich Boysen GmbH and Co KG
Publication of EP0471175A1 publication Critical patent/EP0471175A1/fr
Application granted granted Critical
Publication of EP0471175B1 publication Critical patent/EP0471175B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F01N3/2857—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 at least partially made of intumescent material, e.g. unexpanded vermiculite
    • 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
    • F01N13/009—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 separate purifying devices arranged in series
    • F01N13/0097—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 separate purifying devices arranged in series the purifying devices are arranged in a single housing

Definitions

  • the invention relates to a device for the catalytic purification or decomposition of hot exhaust gases, in particular an internal combustion engine, with a tube-like housing arranged or attachable in the exhaust gas flow and at least one catalytically active body (catalyst body) accommodated therein or coated with catalytically active material, which is held in the housing by means of a resilient mat encasing the body in an annular manner, which is formed at least within an area encircling the associated catalyst body in the form of an expandable mat consisting of a material which irreversibly swells under heat and which seals an annular spacing zone between the catalyst body and the wall of the housing, which is constructed from at least two axially assembled tube-like housing sections.
  • the catalyst body generally consists of ceramic material, the body being penetrated by a large number of narrow channels, the walls of which are coated with catalytically active material, as a rule platinum. If necessary, however, the catalyst body can also consist of metal. In any case, each catalyst body forms a monolith, which is resiliently held in the housing.
  • DE-OS 38 11 224 describes a device of the type mentioned at the beginning with a catalyst body designed as a metal monolith.
  • the metal monolith has a monolith jacket, for example made of sheet steel, the end edges of which protrude beyond the end faces of the metal monolith. These end edges are welded to funnel-shaped connecting parts, which are arranged together with the monolith jacket within a housing which encloses the monolith jacket and the connection funnels at a radial distance, the spacing space or the like being provided by an expansion mat. is filled out.
  • the housing consists of two axially assembled housing sections which are connected to one another via a sliding seat and are accordingly able to move against one another .
  • DE-OS 38 11 224 also describes a modified embodiment in which the monolith jacket is connected to at least one connecting funnel via a sliding seat and the housing has an integral design.
  • DE-OS 38 11 224 does not explain in more detail how the illustrated embodiments are to be produced.
  • a housing cross section is shown, from which it can be seen that the housing or the housing parts each consist of two interconnected shell parts into which the metal monolith together with the inflatable mat enveloping it and the connection funnels, etc. can be inserted before connecting the shell parts.
  • a further device for catalytic cleaning or decomposition of hot exhaust gases is known, in which the catalyst body is resiliently held within a housing by means of a metal structure arranged between the housing inner wall and the catalyst body.
  • ring flanges or the like are inside the housing. arranged, which radially overlap the cross section of the metal knitted fabric and an adjacent ring zone on the end faces of the catalyst body and thus shield against the exhaust gas flow.
  • the like axially between the ring flanges. and said ring zones on the end faces of the catalyst body each have a flexible sealing ring, for example in the form of a gas-filled ring hose.
  • DE-PS 38 30 352 shows a further device for the catalytic cleaning or decomposition of hot exhaust gases.
  • the catalyst body and funnel-shaped housing linings adjoining it on the end face within a housing with the interposition of an inflatable mat or the like. arranged.
  • Spacer rings or the like are located axially between the funnel-shaped inner linings mentioned and the facing end faces of the catalyst body. arranged, which consist of a material that burns away under heat, so that the like when commissioning the device in the area of the mentioned spacer rings or the like. a space is created between the catalyst body and the funnel-shaped inner linings by the hot exhaust gases. Tensions between the catalyst body and the above-mentioned lining parts can thus be avoided.
  • the object of the invention is now to provide a device of the type specified at the outset that is easy to manufacture and is characterized by a particularly reproducible arrangement of the catalyst body or the catalyst bodies.
  • stops are arranged in the housing on the end faces of the catalyst body or on the foremost and rearmost end faces of the successive catalyst bodies in the flow direction of the exhaust gas, which radially overlap the end faces mentioned, that the catalyst body or bodies with the associated one Mat are inserted axially into the housing sections and the housing sections are firmly connected to one another with compensation for manufacturing tolerances in an axially assembled state, in which the stops abut the assigned end faces of the catalyst body or the catalyst bodies and the optionally successive catalyst bodies against one another or against them arranged spacers are pushed, and that by axially between the stops and the facing end faces of the catalyst body or the catalyst body and inserted under heat spacing elements which burn off or dissolve, a predeterminable axial spacing space can be formed or formed.
  • each catalyst body with the associated mat can be pushed into the associated housing section or the corresponding housing sections in the manner of a plug. A visual inspection is easily possible here.
  • a particular advantage of the invention is that the axial position of the catalyst body or the catalyst body in the housing is precisely predetermined by the stops arranged therein. After inserting the catalyst body or the catalyst body into the respective housing section or the housing sections, the same are plugged together with sufficient force that the stops come to rest on the assigned end faces of the catalyst body or the catalyst body and in any case an exact adaptation of the housing to the dimensions of the catalyst body or the catalyst body is reached.
  • the spacer elements which burn off or dissolve under the action of heat ensure that, after the housing has been installed between the stops and the facing end faces of the catalyst body or the catalyst body, a precisely defined free space can be generated, which prevents the stops and the respective catalyst body from being prevented destructive compressive forces can be effective, for example if the housing and the catalyst body or bodies expand to the same extent under the influence of heat or shrink to the same extent when cooled.
  • Said axial distance between the stops and the respectively adjacent catalyst body is completely harmless for its seat in the axial direction of the housing, because when the device is first subjected to heat, the inflatable mat, which holds the catalyst body or the catalyst bodies in the housing, swells and thus the catalyst body or fixes the catalyst body immovably.
  • housing sections can in principle be produced in any manner.
  • production from shell parts is also possible, which can be connected to one another to form the pipe-like housing sections before the respective catalyst body is inserted.
  • the production of the housing sections from pipe sections is advantageous if the housing has a circular or slightly eccentric cross section.
  • the cross sections In the case of markedly non-circular cross sections, in particular if the cross sections have height and width dimensions which differ greatly from one another, it is generally advisable to produce the housing sections from shell parts.
  • the device shown in Fig. 1 for the catalytic cleaning and decomposition of combustion gases of a vehicle engine has a housing 1, which between an engine-side exhaust pipe 2 and one to the outside to the atmosphere re or to an exhaust silencer leading exhaust-side exhaust pipe 3 is arranged.
  • the main part of the housing 1 is formed by two pipe sections 4 and 5.
  • the pipe section 5 has a widened left end in the manner shown, such that the pipe section 4 can be inserted into this end.
  • the two pipe sections 4 and 5 are welded to one another at a peripheral seam 6.
  • an inwardly projecting ring step with a radial ring surface 7 is formed.
  • two catalyst bodies 8 are arranged at a distance from one another.
  • these are ceramic monoliths which are penetrated by a large number of narrow channels in the axial direction of the housing 1.
  • the walls of these channels are covered with catalytically active material, usually platinum, in order to be able to catalytically break down the exhaust gases passing through the catalyst bodies 8 and thus detoxify them.
  • the catalyst bodies 8 are each covered by an inflatable mat 9, which consists of an irreversibly swellable material under the influence of heat and also acts in the manner of thermal insulation, so that the catalyst body 8 heated by the hot exhaust gases flowing through it only comparatively little heat to the outside of the pipe sections 4 and 5 transferred.
  • a ceramic ring 10 is arranged as a spacer, which is coated in a manner similar to the catalyst bodies 8 by an inflatable mat 11 and is held within the pipe sections 4 and 5.
  • the end face of the ceramic ring 10 is practically gap-free on the facing end faces of the catalyst body 8, so that the expansion mats 9 and 11 of the catalyst body 8 and the ceramic ring 10 between the catalyst bodies 8 are practically not acted upon by the exhaust gases flowing through the housing 1 and their pulsations can. This is important because the material of the inflation mats 9 and 11 can only withstand the pulsations of the exhaust gases for a limited time.
  • the catalyst bodies 8 enclosing sealing rings 12 made of wire mesh are arranged, which prevent the pulsations of the exhaust gases by the annular gaps between the annular surfaces 7 and the facing End faces of the catalyst body 8 remain, which can inflate the inflatable mats 9 of the catalyst body 8 in a destructive manner.
  • annular gaps mentioned between the annular surfaces 7 and the catalyst bodies 8 must be present because the housing 1 or the pipe sections 4 and 5 expand to different extents under the influence of the hot exhaust gases or shrink at different speeds when cooled.
  • destructive compressive forces could occur between the annular surfaces 7 overlapping the facing end faces of the catalyst bodies 8 and the ceramic bodies 8 if the pipe sections 4 and 5 previously heated by the exhaust gases are suddenly and strongly cooled by spray water (for example in a car washer for vehicles) and shrink accordingly.
  • annular disk-shaped inserts 13 made of, for example, ceramic paper material, which burns or dissolves quickly under the action of the hot exhaust gases.
  • funnel-like double-walled connecting pieces 14 and 15 are arranged, wherein the space between the inner and outer wall can be filled with heat-resistant heat insulation material 16, for example a ceramic-based material.
  • heat-resistant heat insulation material 16 for example a ceramic-based material.
  • the inner walls 14 'and 15' have tubular end regions which, with the formation of a sliding seat, that is to say axially displaceably, protrude into an axial annular gap which extends between the outer circumference of the exhaust pipe 2 or 3 and the Outside wall of the connector 14 or 15 is formed.
  • the outer walls of the attachment pieces 14 and 15 each have tubular end regions with ring steps 19, the radial height of which is adapted to the thickness of the inner walls 14 'and 15'.
  • the end edges of the tubular end pieces of the outer walls of the connecting pieces 14 and 15 are along the peripheral seams 20 and 21 welded to the exhaust pipes 2 and 3.
  • the catalyst bodies 8 are first arranged in the associated pipe sections 4 and 5, which are still separated from one another. First, the annular disk-shaped inserts 13 are inserted, in each case from the ends of the pipe sections 4 and 5 remote from the annular surfaces 7. Then the associated catalyst body 8, which was previously covered with the associated inflatable mat 9 and provided at one end with the associated wire mesh sealing ring 12, is inserted axially into the associated pipe section 4 or 5 in the direction of the annular surface 7.
  • the ceramic ring 10 which was also previously covered with the associated inflatable mat 11, is now inserted into one of the pipe sections 4 and 5. Now the pipe sections 4 and 5 can be axially one into the other or. are plugged onto one another, with sufficient axial thrust forces ensuring that the catalyst bodies 8 rest against the annular disk-shaped inserts 13 and the ceramic ring 10 without play. At the same time, the pipe sections 4 and 5 are welded along the circumferential seam 6.
  • the welding of the pipe sections 4 and 5 to one another along the circumferential seam 6 can take place simultaneously with the welding of the pipe sections 4 and 5 to the associated connecting pieces 14 and 15 along the circumferential seams 17 and 18, if the connecting pieces 14 and 15 have been prepared accordingly beforehand.
  • the ring-shaped inserts 13 burn off or dissolve, at the same time the material of the inflation mats 9 and 11 swells, so that on the one hand between the annular surfaces 7 of the pipe sections 4 and 5 and the facing end faces of the Catalyst body 8 annular gaps are formed with a predetermined width by the inserts 13 and on the other hand, the catalyst body 8 and the ceramic ring 10 are held axially fixed in the pipe sections 4 and 5.
  • the axial dimensions of the main part of the housing 1 formed by the pipe pieces 4 and 5 are exactly adapted to the dimensions of the catalyst body 8 and the ceramic ring 10, i.e. all manufacturing tolerances are compensated.
  • the embodiment shown in FIG. 2 differs from the embodiment according to FIG. 1 first in that the housing 1 is composed of two housing halves 22 and 23, each of which has a section encasing the associated catalyst body 8 with a constant cross section and a funnel-shaped widening section have, which corresponds to the connecting pieces 14 and 15 in Fig. 1.
  • housing halves 22 and 23 are expediently each constructed from shell parts which are tightly connected or welded to one another at longitudinal seams which are not visible in FIG. 2.
  • the inner walls 14 'and 15' of the connection areas can be inserted into the housing halves 22 and 23 together with the associated heat insulation material 16 from the ends of the housing halves 22 and 23 which are larger in cross section.
  • annular bead 24 projecting radially inwards can be formed on the end of the inner wall 14' which has the larger cross section and which extends into a radially outwardly projecting flange-like annular surface 25 continues, wherein in the transition area between the annular bead 24 and the funnel-shaped part of the inner wall 14 'an annular bead 26 is formed with its convex side projecting outwards.
  • a sealing ring 27 made of wire mesh is clamped, which is arranged together with a further sealing ring 28 made of wire mesh in a bead of this housing half 22 running in the circumferential direction of the housing half 22, the ring surface 25 of the inner wall 14 'protrudes into the gap between the sealing rings 27 and 28. This ensures the axial position of the end of the inner wall 14 ′ facing the catalyst body 8.
  • the catalyst body 8 enclosed by the housing half 22 can be arranged in the housing half 22.
  • annular disk-shaped inserts 29 are placed on the flank of the annular bead 24 facing the catalyst body 8, which inserts 29 in FIG 1 correspond. Then the catalyst body 8, which previously with the associated inflatable mat 9 was encased, inserted axially into the housing half 22.
  • the sealing rings 27 and 28 can also be combined into a single wide sealing ring 30, as is shown in the case of the inner wall 15 'within the housing half 23.
  • the sealing ring 30 forms a press and slide fit for the associated end of the inner wall 15 ', while the other end of the inner wall 15' is fixedly connected or welded to the housing half 23 for axial securing of the position.
  • inserts 29 are again arranged from a material that burns or dissolves under the influence of heat, so that during later operation, i.e. during exhaust gas separation or purification, a sufficient distance remains between the catalytic converter body 8 and the inner wall 15 'and no axial pressure forces can be transmitted.
  • the inserts 29 are secured in their position on the side facing the inner wall 15 'by the flank of the inner annular bead 24 formed on the inner wall 15' facing the catalyst body 8 or by an edge region 31 which is turned radially inward.
  • the catalyst body 8 assigned to the housing half 23 can be inserted axially into the housing half 23 with its inflatable mat 9.
  • the ceramic ring 10 with its inflatable mat 11 encasing it is pushed axially into one of the housing halves 22 and 23, respectively, after which the housing halves 22 and 23 axially plugged together, with sufficient axial thrust force, such that the ends of the ceramic ring 10 lie against the facing ends of the catalyst bodies 8 without gaps and the ends of the catalyst bodies 8 facing away from one another with the annular inserts 29 being clamped against the facing ends of the inner walls 14 ' and 15 'are pushed.
  • the housing halves 22 and 23 are then welded to one another along the peripheral seam 6.
  • the embodiment shown in Fig. 2 can also be modified in such a way that the inflatable mat 9 of each catalyst body 8 projects into the space between the inner walls 14 'and 15' and the housing halves 22 and 23 or fills this space.
  • Such an arrangement is similar to the embodiment shown in the right part of FIG. 2, only the sealing ring 30 is omitted.
  • the annular gap between the inner wall 15 'and the catalyst body 8 is expediently provided by a heat-resistant woven or wire mesh layer to protect the inflatable mat 9 sealed against the pressure pulsations of the exhaust gases, the fabric or wire mesh layer mentioned encasing adjacent areas of the catalytic converter body 8 and the inner wall 15 'from the outside.
  • the catalyst body 8 and the associated inner wall 15 '(or 14') can be pushed together axially into the housing half 23 (or 22) after being coated with the inflatable mat 8, the axial distance between the inner wall 15 '(or 14' ) and the adjacent catalyst body 8 is in turn secured by the previously arranged annular inserts 29.
  • both the pipe sections 4 and 5 and the housing halves 22 and 23 can be dimensioned with a greater axial length such that two catalyst bodies 8 can be inserted axially one behind the other, with a ceramic ring 10 being expediently interposed between these catalyst bodies 8, in order to form a space acting as a mixing zone for the exhaust gases between successive catalyst bodies 8.
  • a further pipe section which encloses a catalyst body 8 in the same manner as the other two pipe sections 4 and 5, can be interposed between the pipe sections 4 and 5.
  • a housing section encasing a further catalyst body 8 can be arranged between the housing halves 22 and 23.
  • the axial housing length can always be exactly the axial length of the successive catalyst bodies 8 and, if appropriate, the intermediate one Ceramic rings 10 are adapted by holding together the pipe sections or housing sections forming the housing 1 with sufficient axial thrust force, while the pipe sections or housing sections are connected to one another.
  • FIG. 1 the type shown in FIG. 1 is characterized in that for adapting to exhaust systems of different internal combustion engines, it is easily possible to manufacture housings 1 with different dimensions for differently sized catalyst bodies 8 and different spacer rings 10. In essence, it must only be assumed that the housing is manufactured in accordance with differently dimensioned tubes.
  • the housing sections 4 and 5 (cf. FIG. 1) or 22 and 23 (cf. FIG. 2) can be plugged together axially with very great force, in such a way that in each case that between the catalyst bodies 8 arranged ceramic ring 10 or the like. even if the end surfaces of the ceramic ring 10 or the catalyst body 8 are not exactly ground flat, adjoins the catalyst body 8 axially close by the ceramic ring 10 "digging" somewhat into the end faces of the catalyst body 8. This allows a very good seal between the ceramic ring 10 or the like. and reach the facing end faces of the catalyst bodies 8. The space between the successive catalyst bodies 8 encompassed by the ceramic ring 10 is accordingly well sealed off from the inflation mat 9.
  • FIG. 1 has the advantage that the inlet and outlet funnels 14, 15 can be modified without great effort - in particular without changing the parts encasing the catalyst body 8. This is advantageous when manufacturing prototypes or with regard to possible modifications during series production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Catalysts (AREA)
EP91110837A 1990-07-28 1991-06-29 Procédé pour la fabrication d'un dispositif pour la purification catalytique ou la décomposition de gaz d'échappement chauds Expired - Lifetime EP0471175B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024015 1990-07-28
DE4024015A DE4024015A1 (de) 1990-07-28 1990-07-28 Vorrichtung zur katalytischen reinigung bzw. zerlegung von heissen abgasen

Publications (2)

Publication Number Publication Date
EP0471175A1 true EP0471175A1 (fr) 1992-02-19
EP0471175B1 EP0471175B1 (fr) 1994-07-13

Family

ID=6411204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91110837A Expired - Lifetime EP0471175B1 (fr) 1990-07-28 1991-06-29 Procédé pour la fabrication d'un dispositif pour la purification catalytique ou la décomposition de gaz d'échappement chauds

Country Status (4)

Country Link
EP (1) EP0471175B1 (fr)
AT (1) ATE108513T1 (fr)
DE (2) DE4024015A1 (fr)
ES (1) ES2057674T3 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9202554U1 (fr) * 1992-02-27 1992-04-16 Heinrich Gillet Gmbh & Co Kg, 6732 Edenkoben, De
DE4244315A1 (de) * 1992-08-31 1994-03-03 Zeuna Staerker Kg Katalytische Abgasreinigungsvorrichtung
EP0665365A2 (fr) * 1993-12-31 1995-08-02 Firma J. Eberspächer Procédé pour assembler un corps de traitement de gaz d'échappement à son boîtier et dispositif de traitement de gaz d'échappement
WO1998006934A1 (fr) * 1996-08-08 1998-02-19 General Motors Corporation Convertisseur catalytique
EP1361347A1 (fr) * 2002-04-22 2003-11-12 J. Eberspächer GmbH & Co. KG Convertisseur catalytique pour un moteur à combustion interne
WO2006061526A1 (fr) * 2004-12-10 2006-06-15 Faurecia Systemes D'echappement Dispositif de depollution des gaz d'echappement d'un moteur thermique
EP2378091A1 (fr) * 2010-04-15 2011-10-19 J. Eberspächer GmbH & Co. KG Dispositif de traitement de gaz d'échappement
US8763375B2 (en) 2010-08-19 2014-07-01 J. Eberspaecher Gmbh & Co. Kg Exhaust gas cleaning device, exhaust system, removal method
US9222392B2 (en) 2010-04-15 2015-12-29 Eberspaecher Exhaust Technology Gmbh & Co. Kg Exhaust gas treatment device
FR3082556A1 (fr) * 2018-06-15 2019-12-20 Psa Automobiles Sa Dispositif de purification de gaz de combustion comportant une entretoise thermiquement decomposable

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509029C2 (de) * 1994-06-06 1999-11-11 Ford Werke Ag Verfahren zur Herstellung einer katalytischen Behandlungsvorrichtung
DE19549603C2 (de) * 1994-06-06 2003-10-23 Ford Werke Ag Vorrichtung zur katalytischen Behandlung von Abgasen und Verfahren zu ihrer Herstellung
DE19528947A1 (de) * 1995-08-07 1997-02-13 Boysen Friedrich Gmbh Co Kg Vorrichtung zur katalytischen Reinigung bzw. Zerlegung von heißen Abgasen
BR9504071A (pt) * 1995-09-19 1997-10-14 Gillet Heinrich Gmbh Catalisador de gases de descarga para motores de combustão interna
DE19919580A1 (de) * 1999-04-29 2000-11-02 Delphi Tech Inc Mehrteiliges Katalysatorgehäuse
DE10250345A1 (de) * 2002-10-29 2004-05-13 Volkswagen Ag Brennstoffzellenanordnung
DE50305163D1 (de) 2002-11-20 2006-11-09 Eberspaecher J Gmbh & Co Mehrbettkatalysator
DE10254036B4 (de) * 2002-11-20 2005-08-04 J. Eberspächer GmbH & Co. KG Mehrbettkatalysator
DE102018106836A1 (de) * 2018-03-22 2019-09-26 Faurecia Emissions Control Technologies, Germany Gmbh Abgasanlagenkomponente sowie Verfahren zur Herstellung einer Abgasanlagenkomponente

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2244909A1 (fr) * 1973-09-26 1975-04-18 Engelhard Min & Chem
US4161509A (en) * 1975-04-14 1979-07-17 Tenneco., Inc. Monolithic converter
US4581206A (en) * 1983-05-24 1986-04-08 Honda Giken Kogyo Kabushiki Kaisha Catalytic converter
DE3830352C1 (en) * 1988-09-07 1989-11-30 Leistritz Ag, 8500 Nuernberg, De Exhaust emission control device for motor vehicles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948611A (en) * 1974-06-10 1976-04-06 Engelhard Minerals & Chemicals Corporation Catalytic converter having hollow, gas-filled mounting means for a monolithic catalyst
DE3700070A1 (de) * 1987-01-02 1988-07-14 Eberspaecher J Vorrichtung fuer die katalytische reinigung von fahrzeugmotor-abgasen
DE3811224A1 (de) * 1988-04-02 1989-10-12 Leistritz Ag Abgaskatalysator mit metallmonolith
DE3827863A1 (de) * 1988-08-17 1990-02-22 Leistritz Ag Katalytische abgasreinigungsvorrichtung
DE8812762U1 (fr) * 1988-10-11 1989-06-29 Emitec Emissionstechnologie
DE3838426A1 (de) * 1988-11-12 1990-05-17 Leistritz Ag Abgasreinigungsvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2244909A1 (fr) * 1973-09-26 1975-04-18 Engelhard Min & Chem
US4161509A (en) * 1975-04-14 1979-07-17 Tenneco., Inc. Monolithic converter
US4581206A (en) * 1983-05-24 1986-04-08 Honda Giken Kogyo Kabushiki Kaisha Catalytic converter
DE3830352C1 (en) * 1988-09-07 1989-11-30 Leistritz Ag, 8500 Nuernberg, De Exhaust emission control device for motor vehicles

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9202554U1 (fr) * 1992-02-27 1992-04-16 Heinrich Gillet Gmbh & Co Kg, 6732 Edenkoben, De
DE4244315A1 (de) * 1992-08-31 1994-03-03 Zeuna Staerker Kg Katalytische Abgasreinigungsvorrichtung
DE4244315C2 (de) * 1992-08-31 1998-02-26 Zeuna Staerker Kg Katalytische Abgasreinigungsvorrichtung
EP0665365A3 (fr) * 1993-12-31 1995-11-02 Eberspaecher J Procédé pour assembler un corps de traitement de gaz d'échappement à son boîtier et dispositif de traitement de gaz d'échappement.
US5683660A (en) * 1993-12-31 1997-11-04 J. Eberspacher Gmbh & Co. Method for uniting an exhaust treatment body with its housing and an exhaust treatment apparatus
EP0665365A2 (fr) * 1993-12-31 1995-08-02 Firma J. Eberspächer Procédé pour assembler un corps de traitement de gaz d'échappement à son boîtier et dispositif de traitement de gaz d'échappement
WO1998006934A1 (fr) * 1996-08-08 1998-02-19 General Motors Corporation Convertisseur catalytique
EP1361347A1 (fr) * 2002-04-22 2003-11-12 J. Eberspächer GmbH & Co. KG Convertisseur catalytique pour un moteur à combustion interne
US7384613B2 (en) 2002-04-22 2008-06-10 J. Eberspacher Gmbh & Co. Kg Catalyst for an internal combustion engine
WO2006061526A1 (fr) * 2004-12-10 2006-06-15 Faurecia Systemes D'echappement Dispositif de depollution des gaz d'echappement d'un moteur thermique
FR2879240A1 (fr) * 2004-12-10 2006-06-16 Faurecia Sys Echappement Dispositif de depollution des gaz d'echappement d'un moteur thermique
EP2378091A1 (fr) * 2010-04-15 2011-10-19 J. Eberspächer GmbH & Co. KG Dispositif de traitement de gaz d'échappement
US9222392B2 (en) 2010-04-15 2015-12-29 Eberspaecher Exhaust Technology Gmbh & Co. Kg Exhaust gas treatment device
US8763375B2 (en) 2010-08-19 2014-07-01 J. Eberspaecher Gmbh & Co. Kg Exhaust gas cleaning device, exhaust system, removal method
FR3082556A1 (fr) * 2018-06-15 2019-12-20 Psa Automobiles Sa Dispositif de purification de gaz de combustion comportant une entretoise thermiquement decomposable

Also Published As

Publication number Publication date
ATE108513T1 (de) 1994-07-15
EP0471175B1 (fr) 1994-07-13
DE59102160D1 (de) 1994-08-18
ES2057674T3 (es) 1994-10-16
DE4024015A1 (de) 1992-02-06

Similar Documents

Publication Publication Date Title
EP0471175B1 (fr) Procédé pour la fabrication d'un dispositif pour la purification catalytique ou la décomposition de gaz d'échappement chauds
EP0615595B1 (fr) Dispositif de raccordement flexible pour deux elements tubulaires, notamment pour systemes de gaz d'echappement de vehicules
EP1887194B1 (fr) Dispositif de purification de gas d'échappement
DE602005001916T2 (de) Vorrichtung und Verfahren für eine Abgasnachbehandlungseinrichtung
EP2420656B1 (fr) Dispositif de nettoyage des gaz d'échappement, installation de gaz d'échappement, procédé de démontage
EP0683851B1 (fr) Element metallique alveole maintenu dans un tube de protection interieur et exterieur, notamment element-support de catalyseur
DE2243251B2 (de) Vorrichtung zur Reinigung der Abgase von Brennkraftmaschinen
EP1047865B1 (fr) Ensemble corps alveolaire presentant une couche intermediaire renfermant au moins une feuille metallique
DE3700070A1 (de) Vorrichtung fuer die katalytische reinigung von fahrzeugmotor-abgasen
EP0537603B1 (fr) Tuyau à paroi double, isolé par de l'air, pour des installations d'échappement de véhicules
EP0919703B1 (fr) Procédé de fabrication d'un collecteur d'échappement isolé par une couche d'air pour un véhicule
EP0435956A1 (fr) Catalyseur a systeme d'enveloppe double.
EP2216525B1 (fr) Dispositif de purification des gaz d'échappement, système de gaz d'échappement et connexion par serrage
EP1361347B1 (fr) Convertisseur catalytique pour un moteur à combustion interne
EP0410089B1 (fr) Elément de conduite flexible pour tuyaux d'échappement de moteurs de véhicules à combustion interne
EP1422396B1 (fr) catalyseur à lits multiples
EP0193072B1 (fr) Dispositif d'épuration catalytique des gaz d'échappement
DE3922667A1 (de) Vorrichtung zur katalytischen entgiftung oder dgl. von verbrennungsmotor-abgasen mit doppelwandigem gehaeuse
EP0295444B1 (fr) Connexion de deux tuyaux d'une conduite pour fluides chauds
DE4212505C1 (en) Double wall pipe providing intermediate chamber for lambda sensor support - is insulated to prevent loss of heat from exhaust gas of motor vehicle so that catalyser can be effective from cold start
EP0758048B1 (fr) Dispositif pour purifier resp. décomposer catalytiquement des gaz d'échappement chauds
EP0693616B1 (fr) Dispositif pour la purification ou la décomposition de gaz d'échappement chauds
DE3506219A1 (de) Katalytische abgasentgiftungseinrichtung
EP3643898B1 (fr) Procédé de fabrication d'un dispositif de traitement des gaz d'échappement
EP1134478B1 (fr) Dispositif d'isolation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB IT NL SE

17P Request for examination filed

Effective date: 19920115

17Q First examination report despatched

Effective date: 19921216

ITF It: translation for a ep patent filed

Owner name: LENZI & C.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IT NL SE

REF Corresponds to:

Ref document number: 108513

Country of ref document: AT

Date of ref document: 19940715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59102160

Country of ref document: DE

Date of ref document: 19940818

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940722

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2057674

Country of ref document: ES

Kind code of ref document: T3

EAL Se: european patent in force in sweden

Ref document number: 91110837.1

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000526

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000616

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20000620

Year of fee payment: 10

Ref country code: ES

Payment date: 20000620

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20000623

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20000626

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000810

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010629

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010630

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020101

EUG Se: european patent has lapsed

Ref document number: 91110837.1

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020228

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20020101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020403

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050629