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EP0387422A1 - Appareil pour la purification catalytique etc. des gaz d'échappement des moteurs à combustion interne ayant deux corps de traitement des gaz et un anneau de protection entre eux - Google Patents

Appareil pour la purification catalytique etc. des gaz d'échappement des moteurs à combustion interne ayant deux corps de traitement des gaz et un anneau de protection entre eux Download PDF

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Publication number
EP0387422A1
EP0387422A1 EP89123835A EP89123835A EP0387422A1 EP 0387422 A1 EP0387422 A1 EP 0387422A1 EP 89123835 A EP89123835 A EP 89123835A EP 89123835 A EP89123835 A EP 89123835A EP 0387422 A1 EP0387422 A1 EP 0387422A1
Authority
EP
European Patent Office
Prior art keywords
protective ring
exhaust gas
housing
holding element
gas treatment
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
EP89123835A
Other languages
German (de)
English (en)
Other versions
EP0387422B1 (fr
Inventor
Siegfried Wörner
Georg Wirth
Peter Dr. Zacke
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 EP0387422A1 publication Critical patent/EP0387422A1/fr
Application granted granted Critical
Publication of EP0387422B1 publication Critical patent/EP0387422B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/30—Exhaust treatment

Definitions

  • the invention relates to a device for catalytic detoxification or for the de-combustion of internal combustion engine exhaust gases, with a housing which has two open end regions connected to an exhaust gas line and a flow passage for the exhaust gas between the end regions, with two in the flow direction in succession and in mutual Distance in the housing, flowable exhaust gas treatment bodies, and with a rigid protective ring made of ceramic material that delimits the space between the two exhaust gas treatment bodies on the outside.
  • a device for catalytic exhaust gas detoxification in which the exhaust gas treatment bodies are ceramic monoliths with a catalytically active coating, is known from DE-A 36 26 728.
  • a rigid protective ring made of ceramic material is described, the end faces of which bear against the two adjoining exhaust gas treatment bodies and the cylindrical outer circumferential surface of which is flush with the outer circumferential surfaces of the two adjoining exhaust gas treatment bodies.
  • a ceramic protective ring has the advantage over a protective ring made of sheet metal that it has much less thermal expansion and heat conduction.
  • the device is characterized in that the protective ring is held in the housing in a form-fitting manner in the axial direction by means of a holding element which surrounds it, with an axial gap between the protective ring and at least one of the two exhaust gas treatment bodies in the installed state.
  • An axial gap is preferably provided on both sides of the protective ring.
  • the protective ring is largely decoupled from the two exhaust gas treatment bodies and is independently held in a form-fitting manner in the housing. Edge pressures between the protective ring and the treatment bodies and the need to adhere to tight manufacturing and assembly tolerances are avoided. Since the axial gap or the two axial gaps is or are preferably narrow, the effect of the hot exhaust gases acting through the axial gap is kept within reasonable limits.
  • the invention makes available a protective ring solution which is more favorable in terms of behavior at changing temperatures and in terms of production technology.
  • Preferred, specific means for the form-fitting fixing of the protective ring are at least one peripheral bulge or at least one peripheral recess on the outside of the protective ring.
  • the actual housing, on which the holding element bears on the outside can also be designed, for example by at least one peripheral bead which is embossed outwards or inwards, in such a way that the holding element and thus the protective ring are reliably axially fixed.
  • the device is structurally particularly favorable when the holding element is part of a holding mat holding the two exhaust gas treatment bodies.
  • the construction can also be such that the retaining element of the protective ring, which is designed as a mounting mat, also axially surrounds the two adjoining exhaust gas treatment bodies only to a certain extent, and that a further mounting mat is provided axially next to each exhaust gas treatment body.
  • the mounting mat is preferably made of ceramic fibers or is designed as a so-called swelling mat, the volume of which increases as the temperature rises. Swelling mats are commercially available.
  • the holding element can also consist of wire mesh.
  • the holding element is not part of a longer mat, it can consist of the same material as is known for swelling mats.
  • the ceramic material of the protective ring is preferably selected in the sense of comparatively good thermal conductivity. This has the advantage that the swelling mat material of the holding element actually becomes hot enough for swelling through the protective ring.
  • the protective ring is preferably surrounded by an intermediate layer over at least part of its axial length.
  • This intermediate layer can act as an assembly aid to make it easier for the protective ring, and possibly also the exhaust gas treatment body, to slip into the correct installation position when the device is being assembled.
  • the intermediate layer can serve as additional protection in the contact area between the protective ring and the subsequent exhaust gas treatment body or in the area of the axial gap there against the action of the hot exhaust gases.
  • the holding element is preferably installed with a radial preload so that the protective ring is securely held even with increasing radial dimensions of the annular space between the protective ring and the housing under high temperatures. It is preferably a non-rigid, resilient, but nevertheless fixing-tight holder.
  • Typical examples of proposed exhaust gas treatment bodies are ceramic monoliths with longitudinal channels and catalytically active coating for exhaust gas detoxification and sieve-shaped soot filter bodies, which can consist of ceramic material, but also of metallic material.
  • AlTiO, SiO2, ZrO2 and cordierite may be mentioned as typical, suitable ceramic materials for the protective ring.
  • Silicon carbides and silicon nitrides may be mentioned as typical, cheaply usable ceramic materials for the case of desired, high thermal conductivity on the scale of the ceramic materials.
  • Ceramic fabrics are particularly suitable for the intermediate layer.
  • Ceramic protective rings with practically any sectional profile can be produced in particular by a process known as slip casting. Within the scope of the invention, however, it is preferred to give the protective ring such a shape that it can be produced by the much cheaper pressing method.
  • a particularly important prerequisite for the producibility of the protective ring by the pressing process is that, as preferred according to the invention, its inner circumference is designed such that the inner molded part or the inner molded parts of the manufacturing press mold in the axial direction can be pulled out. Or in other words: the inner circumference of the protective ring should, at least starting from the parting plane between two inner molded parts, not have any undercuts which would make it impossible to pull out the inner molded parts.
  • the design of the outer circumference of the protective ring is less critical since one can work there, for example, with the outer molded parts being moved radially away.
  • the protective ring has at least one area distributed over the circumference of at least one end face, in which the protective ring face has a greater radial height than next to the area in question.
  • These end face areas with greater radial extension can serve as more effective contact surfaces for spacer plates.
  • the spacer plates preferably consist of a material, in particular a plastic, which burns at a higher temperature when the exhaust gas treatment device is operated for the first time. It is expedient to provide such end face regions with a greater radial height on both end faces of the protective ring and in a larger number than two distributed over the respective circumference.
  • the guard ring a cutting profile which changes as the guard ring progresses in the circumferential direction.
  • This variant is particularly favorable if the protective ring is not circular, but in particular oval, rounded-triangular or the like.
  • the protective ring can be given a profile in those circumferential areas where it has a comparatively smaller radius of curvature, which gives greater strength to the bending moments acting on it.
  • the protective ring has a projecting nose at least at one point on its outer circumference in order to secure the protective ring in the circumferential direction in the housing.
  • the lug (s) can (most conveniently) lie in one division plane of the housing.
  • the housing and / or the holding element are omitted, since their meaningful training due to the other explanations in the present application for the expert without Difficulties is possible.
  • the device shown in FIG. 1 has an essentially cylindrical housing 2 which tapers towards end regions 4 on both sides. Each end area 4 is welded to the open end of an exhaust pipe 6.
  • Two ceramic monoliths 8 with a catalytically active coating for detoxification of internal combustion engine exhaust gases are held in the housing 2 one behind the other and at a mutual distance from one another by means of a continuous swelling mat 10 laid around.
  • a ceramic protective ring 12 is arranged axially between the two monoliths 8 serving as exhaust gas treatment bodies.
  • an inner shell 14 made of high-temperature-resistant sheet metal is arranged, which ends close to the respective monolith 8.
  • An insulating mat 16 for example made of ceramic fibers, is located between the respective inner shell 14 and the housing 2.
  • the protective ring 12 has a rectangular sectional profile. There is an axial gap 24 between its two flat end edges and the outer regions of the end faces of the two adjoining monoliths 8.
  • the outer diameter of the protective ring 12 is somewhat larger than the outer diameter of the two monoliths 8, so that the protective ring 12 digs into the swelling mat 10 in a form-fitting manner.
  • the housing 2 has an outwardly embossed, circumferential bead 28.
  • the protective ring 12 has a sectional profile which forms an encircling outer bead 20. As a result, the swelling mat 10 is compressed more radially in this area.
  • the protective ring 12 has a corrugated sectional profile, which results in a particularly good, positive anchoring with the swelling mat 10.
  • an intermediate layer 18 made of ceramic fabric is drawn as a row of dots. The intermediate layer 18 is located between the swelling mat 2 and the peripheral end region of the monolith 8 and the left peripheral end region of the protective ring 12 in FIG. 2.
  • a corresponding intermediate layer 18 could also be provided on the right axial gap 24 or continuously over both axial gaps 24.
  • the variant is indicated in the left half of the drawing that the inner cross section of the protective ring 12 to the axial tapered towards the end. This can be provided on one or both axial ends. This results in a minimized or even completely eliminated front edge covering of the monoliths 8 by the protective ring 12.
  • the protective ring 12 has a sectional profile which forms a central, circumferential indentation 26.
  • the housing 2 has an inwardly embossed, circumferential bead 28, so that the swelling mat has a double S-shaped change of direction at this point.
  • the sectional profile of the protective ring 12 is concave as a whole bulged inwards.
  • the housing 2 has a corresponding, inwardly embossed, surrounding bead 28.
  • an intermediate layer 18 made of ceramic fabric can be seen, which covers the protective ring over its entire axial length, the two axial gaps and in each case one end region of the outer circumference of the two subsequent monoliths 8.
  • the inner shells 14 shown in FIG. 1 could alternatively also continue axially, for example the monoliths 8 could include at least one end region or could pass as a combined part over the entire housing 2. In this case, the inner shell would be the housing holding the protective ring 12. It is also pointed out that the swelling mat 10 can press a piece into the axial gap 24 in a bead-like manner, as a result of which there is a cushioning between the monolith 8 and the protective ring 12 is formed.
  • the protective ring 12 is provided between two monoliths 8 of different cross-sectional sizes, for example essentially conically overall between two coaxial monoliths 8 of different cross-sectional sizes or asymmetrically between a first, larger-sized monolith 8 and a second, smaller-sized monolith 8, the is provided with an offset central axis.
  • the intermediate layer 18 can be chosen to be smoother in terms of material than the swelling mat 10. Then the protective ring 12 slips more easily in the axial direction into its correct installation position when the device is being assembled, particularly in the case of the manufacture of the housing 2 from two half-shells which are welded together at the end, whereby positive installation also helps. In view of this function, a material can be selected for the intermediate layer 18 which burns during operation of the device. If one chooses a temperature-resistant material, there is a protective effect for the mounting mat 10.
  • the protective ring 12 has a sectional profile similar to the embodiment according to FIG. 3 above, although a ring made of knitted wire is provided as the holding element, which lies on the inside in the indentation 26 of the protective ring 12 and on the outside in one outside embossed bead 28 of the housing 2 is located.
  • a holding element 10 made of knitted wire is particularly favorable when the heat conducted through the protective ring 12 to the outside is not sufficient to swell a swelling mat there heating up enough.
  • a mounting mat for example made of ceramic fiber material or swelling mat material, between the outer circumference of the wire mesh ring 10 and the housing 2.
  • the protective ring 12 has an outer peripheral shape similar to the protective ring 12 in FIG. 2 below.
  • the inner circumference of the protective ring 12 is straight in the section shown and parallel to the longitudinal axis of the device.
  • the protective ring 12 has a radial material thickness which changes as the protective ring 12 progresses in the axial direction.
  • the protective ring 12 has a longitudinal section profile which corresponds to a rectangle with a rounded triangle attached.
  • the inner circumference of the protective ring 12 is designed as in the embodiment according to FIG. 5.
  • the protective ring 12 has a longitudinal sectional profile which differs from the rectangular profile according to FIG. 1 in that both the outer circumference and the inner circumference are reduced in the axially central region. This creates an indentation 26 in the axially central region of the outer circumference.
  • the housing has an inwardly embossed bead 28, the helix angle of which is steeper than the helix angle on the outer circumference of the protective ring 12.
  • FIGS. 4 to 7 have in common that the protective ring 12 can be produced in each case by the inexpensive pressing method.
  • the inner circumference of the protective ring has no undercut at all, so that the inner molded part of the manufacturing mold can be pulled out in the axial direction without any problems.
  • the parting plane between the two inner molded parts 30, 32 is located at the location of the smallest inner diameter of the protective ring 12. It can be seen that the inner molded parts 30, 32 can be easily removed axially outwards when the protective ring 12 is produced by the pressing process.
  • the protective ring 12 is axially longer than the clear distance between the two adjoining exhaust gas treatment bodies 8.
  • the protective ring 12 has such a large inner circumference that it is one piece to a large extent includes the two adjoining exhaust gas treatment bodies 8.
  • the protective ring has a longitudinal sectional profile similar to the protective ring 12 according to FIG. 2 below.
  • the protective ring 12 is provided on the inside with a bevel 36 which widens conically outwards, namely distributed over the circumference in each case over a somewhat less than 120 ° circumferential length.
  • three areas 38 remain between the beveled areas 36, which have the full height of the protective ring in the radial direction on the respective protective ring end face. These areas 38 can serve as contact surfaces for the spacer plates described in the introduction to the description.
  • the bevels 36 can be produced, for example, by grinding away. As a result of the bevels 36, only a very small edge area is covered by the end faces of the two adjacent monoliths 8.
  • 11 to 13 is a generally oval protective ring 12 with the special feature that the protective ring 12 has a corrugated profile according to FIG. 12 in the area of its comparatively smaller radius of curvature and an im in the area of its comparatively larger radius of curvature 13 has a substantially rectangular profile.
  • the protective ring 12 has greater strength with respect to bending loads in the areas of the comparatively smaller radius of curvature and is more resilient to bending loads in the areas of its comparatively larger radius of curvature.
  • areas 38 can again be seen as in the embodiment according to FIGS. 9 and 10.
  • the embodiment according to FIG. 14 shows that the protective ring 12 can have outwardly projecting lugs 42 in the parting plane 40 of the housing 2, as a result of which it is positively fixed in the circumferential direction.
  • the protective ring 12 in the context of the invention can either be circular in the end view or have another shape, in particular oval, elliptical, rounded-triangular, rounded-square, etc.
  • the variants described above with regard to the longitudinal sectional profile of the protective ring 12, design and material of the holding element 10, sectional profile variation along the protective ring circumference, presence of spacer plate contact surfaces 38 etc. can be combined with one another in any manner.
  • the wire mesh retaining ring 10 shown in FIG. 4 can be used in all guard ring configurations.
  • the spacer plate contact areas 38 can be provided in all guard ring configurations.
  • the sectional profile variation illustrated in FIGS. 11 to 13 can also be realized along the circumference of the protective ring with other specific protective ring sectional profiles.
  • the protective ring 12 need not be symmetrical about a central plane intersecting its axis at right angles. It can, so to speak, be designed differently on the left and right, in particular on legs of different lengths on the left and right point.

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  • 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)
  • Catalysts (AREA)
EP89123835A 1989-03-17 1989-12-22 Appareil pour la purification catalytique etc. des gaz d'échappement des moteurs à combustion interne ayant deux corps de traitement des gaz et un anneau de protection entre eux Expired - Lifetime EP0387422B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3908887 1989-03-17
DE3908887A DE3908887A1 (de) 1989-03-17 1989-03-17 Vorrichtung zur katalytischen entgiftung oder dgl. von verbrennungsmotor-abgasen mit zwei abgas-behandlungskoerpern und einem schutzring dazwischen

Publications (2)

Publication Number Publication Date
EP0387422A1 true EP0387422A1 (fr) 1990-09-19
EP0387422B1 EP0387422B1 (fr) 1995-03-01

Family

ID=6376633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123835A Expired - Lifetime EP0387422B1 (fr) 1989-03-17 1989-12-22 Appareil pour la purification catalytique etc. des gaz d'échappement des moteurs à combustion interne ayant deux corps de traitement des gaz et un anneau de protection entre eux

Country Status (7)

Country Link
US (1) US5094073A (fr)
EP (1) EP0387422B1 (fr)
AT (1) ATE119237T1 (fr)
DD (1) DD294534A5 (fr)
DE (2) DE3908887A1 (fr)
FR (1) FR2644509B3 (fr)
IT (1) IT1241664B (fr)

Cited By (4)

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EP0448810A2 (fr) * 1990-03-29 1991-10-02 Bayer Ag Procédé de coulage en barbotine pour la fabrication d'un élément en céramique
EP0493705A1 (fr) * 1990-12-31 1992-07-08 Firma J. Eberspächer 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
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
WO2006020211A2 (fr) 2004-08-02 2006-02-23 Arvin Technologies, Inc. Convertisseur catalytique et procede et ensemble associes

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JPH05146685A (ja) * 1991-11-30 1993-06-15 Mazda Motor Corp 排気ガス浄化用触媒及びその製造方法
DE4316870C2 (de) * 1993-05-19 1997-07-31 Eberspaecher J Verfahren zum Herstellen einer Abgasreinigungsvorrichtung
JP3294036B2 (ja) * 1995-01-26 2002-06-17 日本碍子株式会社 ハニカム触媒コンバータ
US6103202A (en) * 1998-03-13 2000-08-15 General Motors Corporation Catalytic converter and pipe assembly
US6669912B1 (en) 2000-02-15 2003-12-30 Senior Investments Ag Flexible combined vibration decoupling exhaust connector and preliminary catalytic converter construction
US7276213B2 (en) * 2003-02-27 2007-10-02 Automotive Components Holdings, Llc Internally shielded catalytic converter
MY148596A (en) * 2004-06-29 2013-05-15 Unifrax Corp Exhaust gas treatment device and method for making the same
JP4325565B2 (ja) * 2005-02-10 2009-09-02 日産自動車株式会社 内燃機関の排気浄化装置および排気浄化方法
US20070107394A1 (en) * 2005-11-17 2007-05-17 Jankowski Paul E Exhaust treatment devices and methods for substrate retention
DE202005019910U1 (de) * 2005-12-19 2007-04-19 Mann + Hummel Gmbh Filter
CN101378822A (zh) * 2006-04-20 2009-03-04 揖斐电株式会社 蜂窝结构体、蜂窝结构体制造方法、壳体和废气净化装置
US7897117B2 (en) * 2006-12-01 2011-03-01 Tenneco Automotive Operating Company Inc. Catalytic converter with mounting device for a hot exhaust gas oxygen sensor
KR20100017601A (ko) * 2007-05-04 2010-02-16 다우 글로벌 테크놀로지스 인크. 개선된 허니컴 필터
DE102007062662A1 (de) * 2007-12-24 2009-06-25 J. Eberspächer GmbH & Co. KG Schiebesitz und Abgasbehandlungseinrichtung
BRPI0917717A2 (pt) * 2008-08-29 2016-02-16 Unifrax I Llc esteira de montagem com protetor de borda flexível e dispositivo de tratamento de gás de exaustão incorporado na esteira de montagem.
CN102256600B (zh) 2008-12-15 2014-07-23 尤尼弗瑞克斯I有限责任公司 陶瓷蜂窝结构体表面涂层
WO2010077360A2 (fr) * 2009-01-05 2010-07-08 Unifrax I Llc Matelas isolant en fibres inorganiques biosolubles très résistant
WO2010120380A2 (fr) * 2009-04-17 2010-10-21 Unifrax I Llc Dispositif de traitement des gaz d'échappement
JP5822163B2 (ja) * 2009-08-10 2015-11-24 ユニフラックス ワン リミテッド ライアビリティ カンパニー 可変基本質量取付けマットまたはプレフォームおよび排気ガス処理装置
CN102575542B (zh) 2009-08-14 2014-09-10 尤尼弗瑞克斯I有限责任公司 用于排气处理装置的安装垫
CN102686843B (zh) * 2009-08-14 2015-04-01 尤尼弗瑞克斯I有限责任公司 多层基底支承体和排气处理装置
US8071040B2 (en) 2009-09-23 2011-12-06 Unifax I LLC Low shear mounting mat for pollution control devices
WO2011037634A1 (fr) * 2009-09-24 2011-03-31 Unifrax I Llc Nappe à plusieurs couches et dispositif de traitement des gaz d'échappement
JP6129558B2 (ja) * 2009-12-17 2017-05-17 ユニフラックス ワン リミテッド ライアビリティ カンパニー 排気ガス処理装置のための取付けマット
WO2011084558A1 (fr) 2009-12-17 2011-07-14 Unifrax I Llc Utilisation de microsphères dans une nappe de montage de dispositif de traitement des gaz d'échappement
US8734726B2 (en) * 2009-12-17 2014-05-27 Unifrax I Llc Multilayer mounting mat for pollution control devices
WO2012021817A2 (fr) 2010-08-12 2012-02-16 Unifrax I Llc Dispositif de traitement de gaz d'échappement
DK2603676T3 (en) 2010-08-13 2016-04-25 Unifrax I Llc Flexible mounting mat with edge protection and exhaust gas treatment device including the mat assembly
WO2012065052A2 (fr) 2010-11-11 2012-05-18 Unifrax I Llc Mat de support et dispositif de traitement des gaz d'échappement
DE102014010857A1 (de) * 2014-07-25 2016-01-28 Man Diesel & Turbo Se Katalysatoreinheit, Verfahren zum Herstellen derselben und Abgaskatalysator
BR112017003675B1 (pt) 2015-02-24 2022-10-11 Unifrax I Llc Método para formar uma esteira de isolamento e esteira de isolamento
EP4039952A1 (fr) * 2021-02-04 2022-08-10 Purem GmbH Module de traitement des gaz d'échappement pour un syst?me d'échappement des gaz d'un moteur à combustion interne
NL2034346B1 (en) * 2023-03-15 2024-09-26 Daf Trucks Nv An exhaust after treatment assembly.

Citations (4)

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EP0219636A1 (fr) * 1985-09-06 1987-04-29 Leistritz Aktiengesellschaft Dispositif d'épuration des gaz d'échappement pour véhicules à moteur
DE3626728A1 (de) * 1986-08-07 1988-02-18 Leistritz Ag Abgasreinigungsvorrichtung fuer kraftfahrzeuge
EP0256416A1 (fr) * 1986-08-07 1988-02-24 Leistritz Aktiengesellschaft Dispositif d'épuration de gaz d'échappement

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EP0219636A1 (fr) * 1985-09-06 1987-04-29 Leistritz Aktiengesellschaft Dispositif d'épuration des gaz d'échappement pour véhicules à moteur
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EP0448810A2 (fr) * 1990-03-29 1991-10-02 Bayer Ag Procédé de coulage en barbotine pour la fabrication d'un élément en céramique
EP0448810A3 (en) * 1990-03-29 1991-12-18 Bayer Ag Ceramic product formed by slip-casting and process for its manufacture
US5185113A (en) * 1990-03-29 1993-02-09 Bayer Aktiengesellschaft Slip-cast ceramic component and a process for its production
EP0493705A1 (fr) * 1990-12-31 1992-07-08 Firma J. Eberspächer 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
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
WO2006020211A2 (fr) 2004-08-02 2006-02-23 Arvin Technologies, Inc. Convertisseur catalytique et procede et ensemble associes
EP1787017A2 (fr) * 2004-08-02 2007-05-23 Arvin Technologies, Inc. Convertisseur catalytique et procede et ensemble associes
EP1787017A4 (fr) * 2004-08-02 2010-06-30 Arvin Technologies Inc Convertisseur catalytique et procede et ensemble associes
EP1787017B2 (fr) † 2004-08-02 2020-07-01 Faurecia Emissions Control Technologies, USA, LLC Convertisseur catalytique et procede et ensemble associes

Also Published As

Publication number Publication date
DD294534A5 (de) 1991-10-02
EP0387422B1 (fr) 1995-03-01
DE58909069D1 (de) 1995-04-06
IT9019592A1 (it) 1991-09-07
ATE119237T1 (de) 1995-03-15
IT1241664B (it) 1994-01-26
FR2644509B3 (fr) 1991-05-24
FR2644509A1 (fr) 1990-09-21
IT9019592A0 (it) 1990-03-07
US5094073A (en) 1992-03-10
DE3908887A1 (de) 1990-09-20

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