EP0472009A1 - Dispositif de purification de gaz d'échappement avec deux corps de traitement de gaz l'un après l'autre - Google Patents

Dispositif de purification de gaz d'échappement avec deux corps de traitement de gaz l'un après l'autre Download PDF

Info

Publication number
EP0472009A1
EP0472009A1 EP91112673A EP91112673A EP0472009A1 EP 0472009 A1 EP0472009 A1 EP 0472009A1 EP 91112673 A EP91112673 A EP 91112673A EP 91112673 A EP91112673 A EP 91112673A EP 0472009 A1 EP0472009 A1 EP 0472009A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
gas treatment
wire mesh
housing
bodies
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
EP91112673A
Other languages
German (de)
English (en)
Other versions
EP0472009B1 (fr
Inventor
Georg Dipl.-Ing. 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 EP0472009A1 publication Critical patent/EP0472009A1/fr
Application granted granted Critical
Publication of EP0472009B1 publication Critical patent/EP0472009B1/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

Definitions

  • the invention relates to a device for cleaning internal combustion engine exhaust gases, in which at least two spaced-apart exhaust gas treatment bodies are held in a longitudinal direction in a housing.
  • Such devices with ceramic monoliths which are provided with a catalytically active coating, are known as exhaust gas treatment bodies.
  • exhaust gas treatment bodies are characterized in particular by the fact that two exhaust gas treatment bodies arranged one behind the other are easier to manufacture and cheaper than a correspondingly longer exhaust gas treatment body and that the cleaning effect is better because behind the first exhaust gas treatment body the partially cleaned exhaust gas is new across the flow cross section mixes before flowing through the second exhaust treatment body.
  • the problem is how to best bridge the distance between the two exhaust gas treatment bodies from the point of view of avoiding at least substantial external flow around the exhaust gas treatment bodies and ensuring reliable, positioning of the exhaust treatment bodies in the housing. So far, it has been considered necessary to provide a spacer ring made of sheet metal or rigid ceramic material in the space between the two exhaust gas treatment bodies. Such solutions are comparatively complex, in particular also because of the need to keep the intermediate rings in the correct position during assembly of the exhaust gas cleaning device (combination of the exhaust treatment bodies and the housing).
  • the invention has for its object to provide an exhaust gas cleaning device of the type mentioned, in which the bridging of the distance between the two exhaust gas treatment bodies is carried out in a cost-effective and assembly-friendly manner.
  • the device is characterized according to the invention by a wire mesh, which is placed in the mutually facing end regions of the two exhaust gas treatment bodies around their peripheral surfaces and bridges their distance.
  • exhaust gas treatment body primarily means ceramic or metallic bodies provided with a catalytically active coating and / or particle filter bodies, which can consist of metallic or ceramic material.
  • Particle filters are also known to consist of several filter elements, which together form the filter in their arrangement; Such arrangements are also included in the term “exhaust gas treatment body”. It is understood that the exhaust gas treatment bodies are designed so that the exhaust gas can flow through them.
  • the wire mesh is wrapped around the peripheral end portions of the two exhaust treatment bodies in a single layer, usually with some overlap at the peripheral end portions. It is pointed out, however, that the scope of the invention also includes designs in which the wire mesh is laid around essentially twice or even more often.
  • the expression “circumferential surfaces” does not mean that the exhaust gas treatment bodies must be circular in cross section. "Circumference” is only intended to denote that part of the surface of the exhaust gas treatment body in question which is not the entry end face and not the exit end face.
  • Preferred cross-sectional shapes of the exhaust gas treatment body are circular, oval, elliptical, rounded with a square, rounded with a triangle. Because of the most extensive rationalization effect, embodiments of the device according to the invention are preferred in which there is no other distance bridging ring between the edge regions of the mutually facing end faces of the two exhaust gas treatment bodies.
  • Wire mesh is naturally not gas-tight. Nevertheless, the wire mesh laid around represents a certain flow barrier for the exhaust gas to prevent it from flowing out of the space between the two exhaust gas treatment bodies. For higher requirements, however, it can be expedient to provide one or more layers of a ceramic fiber fabric or a glass fiber fabric around the wire mesh. It is advantageous if the last-mentioned fabric is at least a little longer in the longitudinal direction than the wire fabric, so that the two end edges of the wire fabric are covered.
  • the two exhaust gas treatment bodies are held in the housing by means of a mounting mat, which also bridges their spacing and overlaps the wire mesh.
  • the arrangement of exhaust gas treatment bodies, the wire bridging wire bridging and the mounting mat lying over it can be combined with the housing in a simple and efficient manner to assemble the device.
  • the mounting mat forms a continuous heat insulation layer between the exhaust gas treatment bodies or the exhaust gas-flowed space of the device and the housing, so that the exhaust gas treatment bodies desirably quickly reach and maintain their operating temperature and that the exterior of the housing does not desirably become excessively hot.
  • the term "superimposed” should not necessarily mean that they lie directly on top of one another, rather one or more intermediate layers may be present between the exhaust gas treatment bodies and the wire mesh on the one hand and the mounting mat on the other hand. It is even particularly preferred if, in particular, a ceramic fiber fabric or a glass fiber fabric is laid around on the inside of the mounting mat.
  • a ceramic fiber fabric or a glass fiber fabric is laid around on the inside of the mounting mat.
  • relative sliding movements between the housing with mounting mat on the one hand and the arrangement of exhaust gas treatment bodies and wire mesh on the other hand are easier; this is of particular importance for the behavior of the device under temperature changes between operating temperature and non-operating temperature.
  • the housing is usually made of sheet metal and therefore expands quite considerably at the comparatively high operating temperature, while the exhaust gas treatment bodies, in particular if they are made of ceramic, practically do not expand as the temperature rises.
  • the state that the wire mesh assumes in the spacing area between the two exhaust gas treatment bodies after the assembly of the device depends primarily on the deformation resistance of the wire mesh and on the pressure that the mounting mat, which is normally compressed between the housing and the exhaust gas treatment bodies, depends on from the outside exerts the wire mesh.
  • a first option high resistance to deformation of the wire mesh, relatively low pressure exerted by the mounting mat
  • the exhaust gas treatment bodies and the wire mesh are held by the "pre-tensioning" of the mounting mat against longitudinal displacement relative to the housing, with the exception of the relative movement described above in the case of thermal expansions and thermal contractions.
  • the wire mesh In a second possibility (pressure exerted by the mounting mat so large that the wire mesh is slightly deformed inward in the spacing area), the wire mesh assumes a position in the assembled state in which it is pressed a little inward in the spacing space, so that this results in a certain amount positive, additional fixation of the distance between the two exhaust gas treatment bodies arises. Incidents are possible, in particular the formation of a small step of the wire mesh at the transition from the peripheral surface of the relevant exhaust gas treatment body to the spacing area.
  • Inflatable mats which are known per se, consist essentially of ceramic fibers with mica embedding. As a result of the mica deposits, the inflatable mat tends to expand as the temperature rises, as a result of which a particularly secure holding of the exhaust gas treatment bodies is achieved even at higher temperatures of the device. It is pointed out that the inflatable mat does not necessarily have to go through the length of the two exhaust gas treatment bodies, including the spacing area, but can be divided into several inflatable mats, in particular one inflatable mat per exhaust gas treatment body. However, it is particularly preferred if the inflatable mat passes in the longitudinal direction, as described above in connection with the mounting mat.
  • the housing in front of the exhaust gas treatment bodies has a first transition area that widens in the flow direction and behind the exhaust gas treatment bodies has a second transition area that narrows in the flow direction; that in the over corridor area, an inner housing part is provided, which ends close in front of the adjacent exhaust gas treatment body; and that an insulating mat is arranged in a circumferential space between the respective housing part and the housing.
  • the insulating mats can each bridge the gap between the inner housing part and the adjacent exhaust gas treatment body, and the respective insulating mat can be protected on the inside in the gap area by a ceramic fiber fabric or by a glass fiber fabric. It is particularly preferred if the ceramic fiber fabric or the glass fiber fabric passes from the first gap area over the first exhaust gas treatment body, the metal fabric for the distance between the exhaust gas treatment bodies and the second exhaust gas treatment body to the second gap area.
  • the longitudinal direction of the device which has been mentioned several times in the preceding description, generally coincides at least essentially with the general direction of gas flow in the device.
  • the wires of the wire mesh are preferably very thin and in most cases lie in a diameter range from 0.04 to 0.6 mm.
  • the larger wire thicknesses are particularly suitable for those wire fabrics which are woven from thicker and thinner wires and are used in such a way that the thicker wires run essentially in the longitudinal direction of the device.
  • the illustrated exhaust gas purification device 2 has a housing 4 made of sheet steel, which is essentially cylindrical in the central region and is substantially frustoconical in FIG. 1 on the right and left thereof. Seen in cross section, the housing 4 consists of two half-shells, each with two outwardly bent longitudinal edges 6, which are welded with a longitudinal seam 8 when the device 2 is assembled.
  • the two essentially frustoconical areas are called the first transition area 10 (left in FIG. 1) and the second transition area 12 (right in FIG. 1).
  • An inner housing part 14 is provided in the transition regions 10 and 12, which is welded to the housing 4 at the inlet end or at the outlet end of the device 2 and ends at the other end close to an adjacent exhaust gas treatment body 16. With the exception of the respective area where the inner housing part 14 is welded to the housing 4, there is a circumferential spacing space between the inner housing part 14 and the housing 4. An insulating mat 18 is arranged in each of these spacing spaces. The insulating mat extends in each case over the gap region 20 between the relevant inner housing part 14 and the relevant exhaust gas treatment body 16 and surrounds a part of the inlet-side or outlet-side peripheral surface of the relevant exhaust gas treatment body 16.
  • the two exhaust gas treatment bodies 16 are held in the housing 4 at a mutual distance 22 by means of a swelling mat 24 which is passed between the two insulating mats 18.
  • the housing 4 has various circumferential beads.
  • the inner housing parts 14 also have a circumferential bead in their end regions closer to the exhaust gas treatment bodies 16.
  • a wire mesh 26 is wrapped in their mutually facing end regions, which bridges the spacing region 22 between the two exhaust gas treatment bodies 16.
  • the exhaust gas treatment bodies are drawn uncut. It can be seen in the more central area of the device how the wire mesh 26 bridges the spacing area of the two exhaust gas treatment bodies 16, and further up or down in FIG. 1 it can be seen how the wire mesh 26 covers a part of the peripheral surface of the exhaust gas treatment body 16 in question.
  • the variant above in FIG. 1 is a wire mesh which is woven from thicker wires running in the longitudinal direction of the device 2 and from thinner wires running in the circumferential direction.
  • a wire mesh is well bendable parallel to the thicker wires, so that it can be easily laid around the exhaust gas treatment body 16.
  • the thicker wires running in the longitudinal direction result in a relatively high resistance to deformation against deformation from the cylindrical surface of the wire mesh lying around bes 26 out particularly inside. Therefore, the upper wire mesh 26 is drawn in such a way that, without being pressed inwards in the spacing area 22, it passes from left-front to right-back in a substantially cylindrical shape.
  • the pressure of the inflatable mat 24 is chosen so large that the wire mesh 26 above in Fig. 1 on the facing end edges of the two exhaust gas treatment body 16 a little bit quasi gradually is pressed inside.
  • the wire mesh 26 shown in FIG. 1 below is a wire mesh in which the wires are woven together in the manner of a linen fabric, with warp and weft having the same wire thickness, but also a slightly different wire thickness.
  • the wires all run at approximately 45 ° to the longitudinal direction or gas flow direction of the device 2.
  • This wire mesh 26 has a lower resistance to deformation, so that in the spacing area 22 there is a slight deformation of the wire mesh 26 towards the inside in longitudinal section. This deformation results in a certain additional positional fixation of the exhaust gas treatment body 16 and to a certain extent keeps the exhaust gas flow flowing through the spacing area 22 away from the edge area of the inlet end face on the left in FIG. 1 of the exhaust gas treatment body 16 on the right in FIG. 1.
  • a ceramic fiber fabric or a glass fiber fabric 28 is also drawn, which is placed around the arrangement of the two exhaust gas treatment bodies 16 and the wire mesh 26 and in Fig. 1 on the left and in Fig. 1 on the right over the gap area 20 to a piece extends on the peripheral surface of the relevant inner housing part 14.
  • the inflatable mat 24 or the respective insulating mat 18 is placed around this fabric 28.
  • Fig. 1 a variant is drawn in which two ceramic fiber fabrics or glass fiber fabrics 28 are laid around in an analogous position, but only to cover the relevant gap area 20 and the joint area between the relevant insulating mat 18 and the inflatable mat 24, and not continuously therebetween. It goes without saying that the wire mesh 26 drawn at the top in FIG. 1 can be combined with the fabrics 28 drawn at the bottom in FIG. 1 and vice versa.
  • the wire mesh has a sufficiently high temperature resistance to withstand the temperatures occurring in internal combustion engine exhaust gases.
  • a particularly preferred material for the wires of the wire mesh 26 is stainless steel.
  • the wire mesh 26, the ceramic fiber mesh or glass fiber mesh 28, the insulating mat 18 and the inflatable mat 24 are each provided essentially in one layer (essentially with a butt joint or with a small circumferential overlap). However, you can also work in multiple layers.
  • the fabric 28 facilitates sliding movements between the exhaust gas treatment bodies 16 and the housing 4 as a result of thermal expansions or thermal contractions. In addition, the fabric 28 prevents attacks of the pulsating, hot gas on the mats 18 and 24.
  • the direction of exhaust gas flow through the device 2 is indicated by the arrow 34.

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)
  • Exhaust Silencers (AREA)
EP91112673A 1990-08-22 1991-07-27 Dispositif de purification de gaz d'échappement avec deux corps de traitement de gaz l'un après l'autre Expired - Lifetime EP0472009B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4026566 1990-08-22
DE4026566A DE4026566C2 (de) 1990-08-22 1990-08-22 Abgasreinigungsvorrichtung mit zwei Abgasbehandlungskörpern hintereinander

Publications (2)

Publication Number Publication Date
EP0472009A1 true EP0472009A1 (fr) 1992-02-26
EP0472009B1 EP0472009B1 (fr) 1994-03-30

Family

ID=6412695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112673A Expired - Lifetime EP0472009B1 (fr) 1990-08-22 1991-07-27 Dispositif de purification de gaz d'échappement avec deux corps de traitement de gaz l'un après l'autre

Country Status (2)

Country Link
EP (1) EP0472009B1 (fr)
DE (2) DE4026566C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703105A1 (fr) * 1993-03-26 1994-09-30 Ecia Equip Composants Ind Auto Dispositif de purification catalytique des gaz d'échappement d'un moteur, notamment de véhicule automobile.
EP0719912A1 (fr) * 1994-12-30 1996-07-03 Firma J. Eberspächer Dispositif de traitement de gaz d'échappement d'un moteur à combustion interne
EP0724070A1 (fr) * 1995-01-26 1996-07-31 Ngk Insulators, Ltd. Convertisseur catalytique en forme de nid d'abeille
WO1999039086A1 (fr) 1998-01-28 1999-08-05 J. Eberspächer Gmbh & Co. Procede pour maintenir et isoler des monolithes ceramiques dans un systeme de gaz d'echappement d'automobile et montage realise selon ledit procede
US20130035531A1 (en) * 2011-08-02 2013-02-07 Basf Se Reactor for carrying out an autothermal gas-phase dehydrogenation

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220988C2 (de) * 1992-06-26 1998-02-19 Zeuna Staerker Kg Katalytische Abgasreinigungsvorrichtung
EP2506963B1 (fr) 2009-12-01 2014-11-05 Basf Se Réacteur pour la mise en oeuvre de déshydrogénations autothermiques en phase gazeuse
US8802019B2 (en) 2010-12-21 2014-08-12 Basf Se Reactor for carrying out an autothermal gas-phase dehydrogenation
CN103391812B (zh) 2010-12-21 2015-04-08 巴斯夫欧洲公司 用于进行自热气相脱氢的反应器
EA025292B1 (ru) 2011-08-02 2016-12-30 Басф Се Реактор для проведения автотермического газофазного дегидрирования
US9012707B2 (en) 2011-08-02 2015-04-21 Basf Se Continuous process for carrying out autothermal gas-phase dehydrogenations
US9611191B2 (en) 2012-12-12 2017-04-04 Basf Se Reactor for carrying out an autothermal gas-phase dehydrogenation
WO2018024740A1 (fr) 2016-08-02 2018-02-08 Basf Se Réacteur de déshydrogénation autothermique en phase gazeuse d'un flux de gaz contenant des hydrocarbures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256416A1 (fr) * 1986-08-07 1988-02-24 Leistritz Aktiengesellschaft Dispositif d'épuration de gaz d'échappement
EP0336115A1 (fr) * 1988-04-02 1989-10-11 Leistritz Aktiengesellschaft Catalyseur pour gaz de combustion avec monolithe en métal
DE3835841A1 (de) * 1988-10-21 1990-04-26 Eberspaecher J Abgaskonverter fuer eine brennkraftmaschine
EP0415101A1 (fr) * 1989-09-02 1991-03-06 Leistritz Aktiengesellschaft Système d'échappement, en particulier dispositif de purification de gaz d'échappement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239733A (en) * 1979-04-16 1980-12-16 General Motors Corporation Catalytic converter having a monolith with support and seal means therefor
DE3638049A1 (de) * 1986-11-07 1988-05-19 Leistritz Ag Abgasreinigungsvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256416A1 (fr) * 1986-08-07 1988-02-24 Leistritz Aktiengesellschaft Dispositif d'épuration de gaz d'échappement
EP0336115A1 (fr) * 1988-04-02 1989-10-11 Leistritz Aktiengesellschaft Catalyseur pour gaz de combustion avec monolithe en métal
DE3835841A1 (de) * 1988-10-21 1990-04-26 Eberspaecher J Abgaskonverter fuer eine brennkraftmaschine
EP0415101A1 (fr) * 1989-09-02 1991-03-06 Leistritz Aktiengesellschaft Système d'échappement, en particulier dispositif de purification de gaz d'échappement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703105A1 (fr) * 1993-03-26 1994-09-30 Ecia Equip Composants Ind Auto Dispositif de purification catalytique des gaz d'échappement d'un moteur, notamment de véhicule automobile.
EP0719912A1 (fr) * 1994-12-30 1996-07-03 Firma J. Eberspächer Dispositif de traitement de gaz d'échappement d'un moteur à combustion interne
EP0724070A1 (fr) * 1995-01-26 1996-07-31 Ngk Insulators, Ltd. Convertisseur catalytique en forme de nid d'abeille
US5782089A (en) * 1995-01-26 1998-07-21 Ngk Insulators, Ltd. Honeycomb catalytic converter
WO1999039086A1 (fr) 1998-01-28 1999-08-05 J. Eberspächer Gmbh & Co. Procede pour maintenir et isoler des monolithes ceramiques dans un systeme de gaz d'echappement d'automobile et montage realise selon ledit procede
US20130035531A1 (en) * 2011-08-02 2013-02-07 Basf Se Reactor for carrying out an autothermal gas-phase dehydrogenation
US8852538B2 (en) * 2011-08-02 2014-10-07 Basf Se Reactor for carrying out an autothermal gas-phase dehydrogenation

Also Published As

Publication number Publication date
DE4026566A1 (de) 1992-02-27
DE4026566C2 (de) 1993-10-28
EP0472009B1 (fr) 1994-03-30
DE59101268D1 (de) 1994-05-05

Similar Documents

Publication Publication Date Title
EP0275565B1 (fr) Dispositif pour l'épuration catalytique des gaz d'échappement d'automobiles
EP0472009B1 (fr) Dispositif de purification de gaz d'échappement avec deux corps de traitement de gaz l'un après l'autre
DE3908887A1 (de) Vorrichtung zur katalytischen entgiftung oder dgl. von verbrennungsmotor-abgasen mit zwei abgas-behandlungskoerpern und einem schutzring dazwischen
DE9005031U1 (de) Abgasreinigungsvorrichtung
DE2302746A1 (de) Traegermatrix fuer einen katalytischen reaktor zur abgasreinigung bei brennkraftmaschinen, insb. ottomotoren von kraftfahrzeugen, sowie ein herstellungsverfahren
DE3341868A1 (de) Matrix fuer einen katalytischen reaktor
DE3941919A1 (de) Abgasreinigungsvorrichtung
DE3744265C2 (de) Rußfilter zur Abgasreinigung in Kraftfahrzeugen
DE102006026324A1 (de) Nebenstromfilter mit verbessertem Filterwirkungsgrad
EP0134002B1 (fr) Filtre en toile métallique pour les gaz d'échappement d'un moteur Diesel et procédé pour sa fabrication
DE3835841C2 (fr)
EP0285027B1 (fr) Agencement pour le montage d'un catalyseur dans son boîtier dans l'échappement d'un moteur à combustible liquide
EP0493705B1 (fr) Dispositif de traitement des gaz d'échappement de moteur à combustion interne comprenant deux corps de traitement des gaz espacés l'un de l'autre
DE2400443A1 (de) Vorrichtung zum reinigen der abgase von brennkraftmaschinen
DE3922667A1 (de) Vorrichtung zur katalytischen entgiftung oder dgl. von verbrennungsmotor-abgasen mit doppelwandigem gehaeuse
DE3926072A1 (de) Katalysator zur abgasreinigung mit elastischen elementen zum ausgleich von laengsdehnungen
EP0450348A1 (fr) Convertisseur catalytique pour moteurs à combustion interne
DE3820981C2 (fr)
EP0561019B1 (fr) Dispositif pour le positionnement d'un boîtier intérieur dans le boîtier d'une installation d'échappement pour véhicules
DE3821397A1 (de) Vorrichtung zur katalytischen reinigung von verbrennungsmotor-abgasen
EP0177480B1 (fr) Dispositif de purification catalytique de gaz d'échappement
DE10306462A1 (de) Vorrichtung zur Abgasbehandlung
DE3817490A1 (de) Traegerkoerper fuer einen katalytischen reaktor zur abgasreinigung
WO2001002705A1 (fr) Unite de traitement de gaz d'echappement
DE10223452A1 (de) Partikelfilter für Abgase von Brennkraftmaschinen

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): BE DE FR GB IT SE

17P Request for examination filed

Effective date: 19920325

17Q First examination report despatched

Effective date: 19930601

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT SE

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59101268

Country of ref document: DE

Date of ref document: 19940505

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

Effective date: 19940414

EAL Se: european patent in force in sweden

Ref document number: 91112673.8

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
REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

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

Ref country code: BE

Payment date: 20000609

Year of fee payment: 10

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

Ref country code: GB

Payment date: 20000726

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: 20010618

Year of fee payment: 11

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: 20010727

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

Ref country code: BE

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

Effective date: 20010731

BERE Be: lapsed

Owner name: EBERSPACHER G.M.B.H. & CO.

Effective date: 20010731

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

Effective date: 20010727

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: 20020728

REG Reference to a national code

Ref country code: FR

Ref legal event code: CJ

REG Reference to a national code

Ref country code: FR

Ref legal event code: CJ

EUG Se: european patent has lapsed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040625

Year of fee payment: 14

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: 20050727

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: 20060331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060331

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

Ref country code: DE

Payment date: 20070731

Year of fee payment: 17

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: 20090203