EP1019617A1 - Honeycomb body structure with supporting sections - Google Patents

Honeycomb body structure with supporting sections

Info

Publication number
EP1019617A1
EP1019617A1 EP98958845A EP98958845A EP1019617A1 EP 1019617 A1 EP1019617 A1 EP 1019617A1 EP 98958845 A EP98958845 A EP 98958845A EP 98958845 A EP98958845 A EP 98958845A EP 1019617 A1 EP1019617 A1 EP 1019617A1
Authority
EP
European Patent Office
Prior art keywords
honeycomb body
arrangement according
housing
honeycomb
sections
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.)
Withdrawn
Application number
EP98958845A
Other languages
German (de)
French (fr)
Inventor
Rolf BRÜCK
Wolfgang Maus
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.)
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
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
Priority claimed from DE19743196A external-priority patent/DE19743196A1/en
Application filed by Emitec Gesellschaft fuer Emissionstechnologie mbH filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Publication of EP1019617A1 publication Critical patent/EP1019617A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F01N3/2857—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
    • 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
    • F01N3/2864—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 comprising two or more insulation layers
    • 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
    • F01N3/2878—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration by using non-elastic means for retaining catalyst body in the housing, e.g. a metal chamfer, or by corrugation or deformation of the metal housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like

Definitions

  • the present invention relates to a honeycomb body arrangement, in particular for catalyst carrier bodies for the exhaust gas purification of motor vehicles.
  • Honeycomb body arrangements with a housing in which a honeycomb body is arranged, which has different radial strengths over its circumference, and with a compensating layer arranged between the housing and the honeycomb body are known, for example, from the utility model G 74 01 002.
  • honeycomb bodies have a plurality of channels separated from one another by partitions.
  • the channels have a square, rectangular or other polygonal cross section. Different cross-sectional shapes are described in US Pat. No. 3,853,485.
  • honeycomb body Because of the configuration of the channel geometry and the arrangement of the channels within a cross-sectional area of the honeycomb body, such a honeycomb body has different strengths distributed over the circumference in the radial direction. These different strengths of the honeycomb body also influence the fracture behavior and the elasticity behavior of the honeycomb body.
  • a honeycomb body is known from WO 94/15712 which has an increased elasticity, the elastic properties in particular not being different in different directions. According to the proposal in WO 94/15712, the honeycomb body has, at least in an outer region, partition walls which are arranged and shaped such that they do not form structures which are rigid in the radial direction and / or rigid support structures which extend in the circumferential direction in cross section through the honeycomb body .
  • Such a honeycomb body which is made of a ceramic and / or metallic material, has the advantage that it is not easily destroyed in the radial direction by forces acting on the honeycomb body from a housing, since it has a uniform strength in the radial direction over its circumference having.
  • the object of the invention is to specify a honeycomb body arrangement in which damage to a catalyst carrier body with radial strength properties which vary over its circumference by radially directed forces acting from the housing can be avoided.
  • the invention is based on the idea that the circumferential radial strength properties of a honeycomb body can be exploited by a corresponding configuration of a compensation layer arranged between the honeycomb body and a housing for a stable mounting in the housing.
  • the compensating layer which is arranged between the housing and the honeycomb body, has at least two support sections in the circumferential direction of the honeycomb body, which exert higher forces on the honeycomb body in the radial direction than they exert on the honeycomb body outside the support sections in the other circumferential regions become.
  • the support sections of the compensation layer are formed in areas of higher radial strength of the honeycomb body. In the areas of the support sections, the forces acting on the honeycomb body from the housing are essentially absorbed and introduced into the relatively rigid structure of the honeycomb body.
  • the honeycomb body is quasi cross-sectionally supported at at least two points or in two areas.
  • This configuration of the honeycomb body arrangement according to the invention ensures that the honeycomb body is not destroyed during the production of such a honeycomb body arrangement, that is to say when it is installed in a housing.
  • Another advantage of this embodiment is that during operation of the honeycomb body arrangement, the forces arising due to thermal expansions are absorbed mainly by the support sections and thus in the most stable directions of the honeycomb body.
  • the honeycomb body can be a metallic and / or ceramic body.
  • the channel cross sections can have a relatively simple geometry, which lead to the formation of direction-dependent radial strengths of the honeycomb body.
  • the invention is particularly suitable for particularly thin-walled, extruded ceramic honeycomb bodies, in particular with square channel cross sections, in which case a holder in four supporting sections is preferred, each of which exerts forces on the honeycomb body in the direction of the channel walls.
  • the different strength of the honeycomb body can be compensated for by suitable selection of the properties of the compensation layer itself.
  • a configuration of the compensating layer is preferred, in which the supporting sections have a higher weight per unit area than the other sections of the compensating layer.
  • the support sections have a higher density than the other sections.
  • This configuration of the compensation layer achieves a different deformation behavior of the support sections and the other peripheral areas.
  • a higher strength of the support sections can also be achieved in that the support sections are at least partially formed by at least one insert.
  • the insert can in this case have a structure which can be, for example, a sandwich structure, as a result of which the forces directed from the housing in the radial direction to the honeycomb body are absorbed by the insert.
  • the insert can consist of a material which has a higher strength than a material of the further sections of the compensating layer.
  • the use of a metallic material is preferred.
  • This insert can also serve as a contact point for an electrical connection if the honeycomb body is to be an electrically heatable honeycomb body.
  • the compensating layer arranged between the honeycomb body and the housing is preferably at least partially mat-shaped, as a result of which thermal insulation of the honeycomb body from the housing is also achieved.
  • the compensating layer preferably contains at least one mat made of ceramic fibers, so-called swelling mats preferably being used, which due to their crystalline structure can fill cavities due to swelling due to water absorption.
  • the different strengths in the radial direction over the circumference of the honeycomb body can also be compensated for by the support sections being formed by at least two, preferably three, layers of the compensating layer.
  • the compensation layer is formed in one piece and the layers are formed by folding the compensation layer onto one another. This possibility opens up a simple and inexpensive implementation of the invention.
  • the housing has at least two radially inwardly directed support segments in the circumferential direction of the honeycomb body, which are formed in areas of higher radial strength of the honeycomb body.
  • the forces acting on the honeycomb body from the housing are introduced into the areas of the honeycomb body in which the honeycomb body has a higher radial strength. It is thereby achieved that the areas of the honeycomb body which have a reduced radial strength do not have to absorb any or only very slight forces.
  • the support sections can extend over the entire axial length of the honeycomb body. However, this is not absolutely necessary. It can be advantageous, in particular for axially elongated and not exactly straight honeycomb bodies, if the support sections only extend over part of the axial length of the honeycomb body, e.g. B. only in the Are arranged near the end faces. It is also possible to provide support sections which are distributed over the lateral surface of the honeycomb body. The number and size of the support sections should, however, be such that it is ensured that the honeycomb body is held firmly and durably in the housing.
  • a honeycomb body arrangement with an even number of support sections in a cross section of the honeycomb body arrangement these are arranged such that two support sections are diametrically opposed to each other.
  • the support sections should be evenly distributed over the circumference of the honeycomb body.
  • the honeycomb body and / or the compensation layer and / or the housing have a positioning aid or having.
  • the positioning aid is designed in the form of at least one optical marking, as a result of which the assembly of a honeycomb body arrangement can also be automated. It is also proposed that the positioning aid is formed by a projection or a recess, which can then also be felt mechanically.
  • the honeycomb body on its side facing the compensating layer has at least two curvatures which are directed radially outwards in cross section, the curvatures being formed in areas of higher radial strength of the honeycomb body.
  • This solution also ensures that the areas of the honeycomb body that have reduced radial strength have to absorb little or no forces.
  • the respective curvatures are designed as axially extending flat beads, since this produces an optimal force profile in the honeycomb body.
  • the curvatures produce support sections in the compensation layer and, in the case of circular cross sections of the housing and circular cross sections of the honeycomb body except for the curvatures, the honeycomb body can be installed in any orientation and the support sections always form in the areas of higher radial strength.
  • Axial beads can already be produced when extruding honeycomb bodies by slightly modifying the extrusion cross-section without requiring any special effort.
  • Fig. 1 shows a first embodiment of a honeycomb body arrangement in
  • FIG. 2 shows a first embodiment of a support section of a compensation layer in cross section
  • FIG. 3 shows a second embodiment of a support section of a compensation layer in cross section
  • Fig. 4 shows a second embodiment of a honeycomb body arrangement in
  • Cross section and Fig. 5 shows a third embodiment of a honeycomb body arrangement in
  • a honeycomb body arrangement according to the invention is shown in cross section in FIG. 1.
  • the honeycomb body arrangement has a honeycomb body 1 with a multiplicity of channels 5 in a housing 8.
  • the channels 5 extend in the axial direction of the honeycomb body 1.
  • Each channel 5 is delimited by partitions 6, 7.
  • the partition walls 6, 7 run in parallel or perpendicular planes, as a result of which the honeycomb body 1 has different stiffnesses in the radial direction R over its circumference U.
  • the directions of the honeycomb body 1 are marked with arrows in which it has the highest radial strength.
  • the honeycomb body 1 is surrounded by a compensation layer 2.
  • the compensation layer 2 which in the exemplary embodiment shown is in the form of a ceramic fiber mat, bears against the inner wall 9 of the housing 8.
  • the compensating layer 2 has support sections 3 which have a higher strength in the radial direction R than the other sections 4 of the compensating layer 2.
  • the support sections 3 are arranged in areas of higher radial strength of the honeycomb body 1. In the illustrated embodiment, two support sections 3 are arranged diametrically opposite one another. The arrangement of the support sections 3 is dependent on the strength distribution of the honeycomb body 1. It is particularly advantageous in the case of channels or channel arrangements (not shown) with a hexagonal cross section that are six over the circumference U of the honeycomb arrangement, spaced 60 ° apart in the circumferential direction U. To provide support sections 3 at the points at which the honeycomb body 1 has its highest radial strength.
  • the forces directed radially inwards from the housing 8 are essentially introduced into the honeycomb body 1 via the support sections 3 of the compensating layer 2.
  • the support sections 3 extend at least partially in the axial direction of the honeycomb body 1.
  • the support sections 3 preferably extend over the entire axial length of the honeycomb body 1.
  • FIG. 2 schematically shows an embodiment of a support section 3 of a compensating layer 2.
  • the support section is formed by an insert 10.
  • the insert 10 consists of a metallic material.
  • FIG. 3 shows a further exemplary embodiment of a support section 3 of a compensating layer 2, which is formed by three layers 11, 12, 13 of the compensating layer 2, which are folded onto one another.
  • the housing 8 in this embodiment has support segments 16 directed radially inwards in the circumferential direction U of the honeycomb body 1.
  • the support segments 16 are formed in areas of increased radial strength of the honeycomb body 1.
  • the forces directed radially inward from the housing 8 are essentially introduced via the support segments 16 and the support sections 3 thus created in the compensating layer 2 into areas in which the honeycomb body 1 has a higher radial strength, thereby damaging the honeycomb body 1 when installed in the housing 8 and later operation is avoided.
  • it is necessary that a honeycomb body 1 is installed in a housing 8 with the correct relative position. There are many ways to ensure this even with automated large series production.
  • honeycomb body 1 with a positioning aid 18 that can be scanned optically and / or mechanically.
  • this can be omitted in the case of non-circular cross sections of honeycomb body 1 and housing 8, for which the present invention is also suitable, since their relative position due to the cross-sectional shape, for. B. oval or ellipse.
  • the honeycomb body 1 has radially outwardly directed curvatures 17 in the circumferential regions of its highest radial strength, which produce support sections 3 in the compensating layer 2.
  • the arches 17 preferably form flat beads which extend axially over the entire length of the honeycomb body 1, so that production by extrusion is possible.
  • the effect of the beads on the compensating layer 2 is the same as that of the support segments 16 in FIG. 4, except that the arches 17 are always arranged in the correct position on the honeycomb body 1, whereas the support segments 16 first have to be arranged in the correct position relative to the honeycomb body 1.
  • support sections 3 in the compensation layer 2 by simultaneous measures on the compensation layer 2 and / or the housing 8 and / or the honeycomb body 1.
  • alternating support sections 3 are produced by measures on the housing 8, the honeycomb body 1 and / or the compensating layer 2.
  • the present invention is particularly suitable for the mass production of honeycomb body assemblies, such as are required for exhaust gas purification in automobile construction.
  • thin-walled ceramic honeycomb bodies can be installed easily and durably in metallic housings according to the invention.
  • the present invention also increases the thermal cycling capacity of the arrangements, which facilitates installation close to the engine.
  • the invention is also suitable for honeycomb bodies which are used as carriers for other exhaust gas cleaning agents, such as hydrocarbon traps, NOx traps, water traps, etc.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a honeycomb body structure with a metal housing (8) in which a honeycomb body (1) is arranged. Said honeycomb contains a plurality of separated channels (5) separated from one another by separating walls (6, 7). The honeycomb has varying radial stabilities around the circumference (U) thereof and comprises a compensating layer which is situated between the housing (8) and the honeycomb body (1) in at least a partial area of the circumference (U). The compensating layer (2) has at least two supporting sections (3) in the circumferential direction (U) of the honeycomb body (1). Said supporting sections exert greater forces in a radial direction (R) on the honeycomb body (1) than in the remaining circumferential areas (4) outside of the supporting sections (3), whereby the supporting sections (3) are situated in areas of a higher radial stability of the honeycomb body (1). The supporting sections (3) can each be produced in the circumferential areas having a greater stability by means of provisions on the compensating layer (2), by supporting segments situated on the housing (8) and/or by means of a swelling on the honeycomb body (1). The invention is especially suited for an easy and stable fitting of thin-walled extruded ceramic honeycomb bodies in metal housings.

Description

Wabenkörperanordnung mit Tragabschnitten Honeycomb structure with support sections
Die vorliegende Erfindung betrifft eine Wabenkörperanordnung, insbesondere für Katalysator-Trägerkörper für die Abgasreinigung von Kraftfahrzeugen.The present invention relates to a honeycomb body arrangement, in particular for catalyst carrier bodies for the exhaust gas purification of motor vehicles.
Wabenkörperanordnung en mit einem Gehäuse, in dem ein Wabenkörper angeordnet ist, der über seinem Umfang unterschiedliche radiale Festigkeiten aufweist, und mit einer zwischen dem Gehäuses und dem Wabenkörper angeordneten Ausgleichsschicht, sind beispielsweise durch das Gebrauchs- muster G 74 01 002 bekannt.Honeycomb body arrangements with a housing in which a honeycomb body is arranged, which has different radial strengths over its circumference, and with a compensating layer arranged between the housing and the honeycomb body are known, for example, from the utility model G 74 01 002.
Solche Wabenkörper weisen eine Vielzahl von durch Trennwände voneinander getrennten Kanälen auf. Die Kanäle weisen einen quadratischen, rechteckförmigen oder einen anderen polygonalen Querschnitt auf. In der US-PS 3,853,485 sind unterschiedliche Querschnittsformen beschrieben.Such honeycomb bodies have a plurality of channels separated from one another by partitions. The channels have a square, rectangular or other polygonal cross section. Different cross-sectional shapes are described in US Pat. No. 3,853,485.
Aufgrund der Ausgestaltung der Kanalgeometrie und der Anordnung der Kanäle innerhalb einer Querschnittsfläche des Wabenkörpers weist ein solcher Wabenkörper über dem Umfang verteilt in radialer Richtung unterschiedliche Festigkeiten auf. Diese unterschiedlichen Festigkeiten des Wabenkörpers beeinflussen auch das Bruchverhalten und das Elastizitätsverhalten des Wabenkörpers. Durch die WO 94/15712 ist ein Wabenkörper bekannt, der eine erhöhte Elastizität aufweist, wobei insbesondere die Elastizitätseigenschaften in unterschiedlichen Richtungen nicht unterschiedlich sind. Nach dem Vor- schlag der WO 94/15712 weist der Wabenkörper zumindest in einem äußeren Bereich Trennwände auf, die so angeordnet und geformt sind, daß sie im Querschnitt durch den Wabenkörper keine in radialer Richtung starren Strukturen und/oder starre in Umfangsrichtung verlaufende Stützstrukturen bilden. Ein solcher Wabenkörper, der aus einem keramischen und/oder metallischen Material hergestellt ist, hat den Vorteil, daß er durch von einem Gehäuse auf den Wabenkörper einwirkende Kräfte in radialer Richtung nicht leicht zerstört wird, da er über seinen Umfang eine gleichmäßige Festigkeit in radialer Richtung aufweist.Because of the configuration of the channel geometry and the arrangement of the channels within a cross-sectional area of the honeycomb body, such a honeycomb body has different strengths distributed over the circumference in the radial direction. These different strengths of the honeycomb body also influence the fracture behavior and the elasticity behavior of the honeycomb body. A honeycomb body is known from WO 94/15712 which has an increased elasticity, the elastic properties in particular not being different in different directions. According to the proposal in WO 94/15712, the honeycomb body has, at least in an outer region, partition walls which are arranged and shaped such that they do not form structures which are rigid in the radial direction and / or rigid support structures which extend in the circumferential direction in cross section through the honeycomb body . Such a honeycomb body, which is made of a ceramic and / or metallic material, has the advantage that it is not easily destroyed in the radial direction by forces acting on the honeycomb body from a housing, since it has a uniform strength in the radial direction over its circumference having.
Das prinzipielle Problem der Zerstörung eines Wabenkörpers durch vom Gehäuse in radialer Richtung gleichmäßig auf den Wabenkörper einwirkende Kräfte ist durch die WO 94/15712 gelöst.The fundamental problem of the destruction of a honeycomb body by forces which act uniformly on the honeycomb body in the radial direction from the housing is solved by WO 94/15712.
Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Wabenkörperanordnung anzugeben, bei der eine Beschädigung auch eines Katalysatorträgerkörpers mit über seinen Umfang unterschiedlichen radialen Festigkeitseigenschaften durch vom Gehäuse einwirkende radial gerichtete Kräfte vermieden werden kann.Proceeding from this, the object of the invention is to specify a honeycomb body arrangement in which damage to a catalyst carrier body with radial strength properties which vary over its circumference by radially directed forces acting from the housing can be avoided.
Erfindungsgemäß wird diese Zielsetzung durch eine Wabenkörperanordnung mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen und Ausgestaltungen, die einzeln oder in Kombination miteinander eingesetzt werden können, sind Gegenstand der Unteransprüche.According to the invention, this objective is achieved by a honeycomb body arrangement with the features of claim 1. Advantageous further developments and refinements which can be used individually or in combination are the subject of the dependent claims.
Der Erfindung liegt der Gedanke zugrunde, daß die über den Umfang in unterschiedlichen radialen Festigkeitseigenschaften eines Wabenkörpers durch eine entsprechende Ausgestaltung einer zwischen dem Wabenkörper und einem Gehäuse angeordneten Ausgleichsschicht für eine stabile Halterung im Gehäuse ausgenutzt werden können. Die Ausgleichsschicht, die zwischen dem Gehäuse und dem Wabenkörper angeordnet ist, weist in Umfangsrichtung des Wabenkörpers wenigstens zwei Tragabschnitte auf, die in radialer Richtung höhere Kräfte auf den Wabenkörper ausüben als sie außerhalb der Trag- abschnitte in den übrigen Umfangsbereichen auf den Wabenkörper ausgeübt werden. Die Tragabschnitte der Ausgleichsschicht sind dabei in Bereichen einer höheren radialen Festigkeit des Wabenkörpers ausgebildet. In den Bereichen der Tragabschnitte werden die vom Gehäuse auf den Wabenkörper einwirkenden Kräfte im wesentlichen aufgenommen und in die relativ steife Struktur des Wabenkörpers eingeleitet. In den übrigen Umfangsbereichen, die zwischen jeweils zwei benachbarten Tragabschnitten der Ausgleichsschicht liegen, werden nur geringe oder keine Kräfte in den Wabenkörper eingeleitet. Der Wabenkörper wird durch die Ausgestaltung der Ausgleichsschicht innerhalb des Gehäuses im Querschnitt quasi an wenigstens zwei Punkten bzw. in zwei Bereichen gelagert.The invention is based on the idea that the circumferential radial strength properties of a honeycomb body can be exploited by a corresponding configuration of a compensation layer arranged between the honeycomb body and a housing for a stable mounting in the housing. The compensating layer, which is arranged between the housing and the honeycomb body, has at least two support sections in the circumferential direction of the honeycomb body, which exert higher forces on the honeycomb body in the radial direction than they exert on the honeycomb body outside the support sections in the other circumferential regions become. The support sections of the compensation layer are formed in areas of higher radial strength of the honeycomb body. In the areas of the support sections, the forces acting on the honeycomb body from the housing are essentially absorbed and introduced into the relatively rigid structure of the honeycomb body. In the remaining circumferential areas, which lie between two adjacent supporting sections of the compensating layer, little or no forces are introduced into the honeycomb body. Due to the design of the compensation layer within the housing, the honeycomb body is quasi cross-sectionally supported at at least two points or in two areas.
Durch diese erfindungsgemäße Ausgestaltung der Wabenkörperanordnung wird sichergestellt, daß während der Herstellung einer solchen Wabenkörperanordnung, das heißt beim Einbau in ein Gehäuse keine Zerstörung des Waben- körpers eintritt. Ein weiterer Vorteil dieser Ausgestaltung ist, daß während eines Betriebes der Wabenkörperanordnung die aufgrund thermischer Dehnungen entstehenden Kräfte hauptsächlich durch die Tragabschnitte und damit in den stabilsten Richtungen des Wabenkörpers aufgenommen werden.This configuration of the honeycomb body arrangement according to the invention ensures that the honeycomb body is not destroyed during the production of such a honeycomb body arrangement, that is to say when it is installed in a housing. Another advantage of this embodiment is that during operation of the honeycomb body arrangement, the forces arising due to thermal expansions are absorbed mainly by the support sections and thus in the most stable directions of the honeycomb body.
Der Wabenkörper kann ein metallischer und/oder keramischer Körper sein. Die Kanalquerschnitte können eine relativ einfache Geometrie aufweisen, die zur Ausbildung richtungsabhängiger radialer Festigkeiten des Wabenkörpers führen. Typischerweise ist die Erfindung besonders geeignet für besonders dünnwandige extrudierte keramische Wabenkörper, insbesondere mit quadrati- sehen Kanalquerschnitten, wobei dann eine Halterung in vier Tragabschnitten bevorzugt wird, welche jeweils Kräfte in Richtung der Kanalwände auf den Wabenkörper ausüben.The honeycomb body can be a metallic and / or ceramic body. The channel cross sections can have a relatively simple geometry, which lead to the formation of direction-dependent radial strengths of the honeycomb body. Typically, the invention is particularly suitable for particularly thin-walled, extruded ceramic honeycomb bodies, in particular with square channel cross sections, in which case a holder in four supporting sections is preferred, each of which exerts forces on the honeycomb body in the direction of the channel walls.
Die unterschiedliche Festigkeit des Wabenkörpers kann durch geeignete Auswahl der Eigenschaften der Ausgleichsschicht selbst kompensiert werden. Bevorzugt ist hierbei eine Ausgestaltung der Ausgleichsschicht, bei der die Tragabschmtte ein gegenüber den weiteren Abschnitten der Ausgleichsschicht höheres Gewicht pro Flächeneinheit aufweisen. Insbesondere weisen die Tragabschnitte eine gegenüber den weiteren Abschnitten höhere Dichte auf. Durch diese Ausgestaltung der Ausgleichsschicht wird ein unterschiedliches Deformationsverhalten der Tragabschnitte und der übrigen Umfangsbereiche erreicht. Eine höhere Festigkeit der Tragabschnitte kann auch dadurch erreicht werden, daß die Tragabschnitte wenigstens teilweise durch wenigstens eine Einlage gebildet sind.The different strength of the honeycomb body can be compensated for by suitable selection of the properties of the compensation layer itself. In this case, a configuration of the compensating layer is preferred, in which the supporting sections have a higher weight per unit area than the other sections of the compensating layer. In particular, the support sections have a higher density than the other sections. This configuration of the compensation layer achieves a different deformation behavior of the support sections and the other peripheral areas. A higher strength of the support sections can also be achieved in that the support sections are at least partially formed by at least one insert.
Die Einlage kann hierbei eine Struktur aufweisen, bei der es sich beispielsweise um eine Sandwichstruktur handeln kann, wodurch die vom Gehäuse in radialer Richtung zu dem Wabenkörper gerichteten Kräfte durch die Einlage aufgenommen werden.The insert can in this case have a structure which can be, for example, a sandwich structure, as a result of which the forces directed from the housing in the radial direction to the honeycomb body are absorbed by the insert.
Alternativ oder zusätzlich kann die Einlage aus einem Material bestehen, das gegenüber einem Material der weiteren Abschnitte der Ausgleichsschicht eine höhere Festigkeit aufweist. Bevorzugt ist hierbei die Verwendung eines metallischen Materials. Diese Einlage kann auch als Kontaktstelle für einen elektrischen Anschluß dienen, wenn der Wabenkörper ein elektrisch beheizbarer Wabenkörper sein soll.Alternatively or additionally, the insert can consist of a material which has a higher strength than a material of the further sections of the compensating layer. The use of a metallic material is preferred. This insert can also serve as a contact point for an electrical connection if the honeycomb body is to be an electrically heatable honeycomb body.
Vorzugsweise ist die zwischen dem Wabenkörper und dem Gehäuse angeordnete Ausgleichsschicht wenigstens teilweise mattenförmig ausgebildet, wo- durch auch eine thermische Isolierung des Wabenkörpers vom Gehäuse erreicht wird. Vorzugsweise enthält die Ausgleichsschicht mindestens eine Matte aus keramischen Fasern, wobei bevorzugt sogenannte Quellmatten eingesetzt werden, die aufgrund ihrer kristallinen Struktur Hohlräume durch Quellen infolge von Wasseraufnahme ausfüllen können. Eine Kompensation der unterschiedlichen Festigkeiten in radialer Richtung über dem Umfang des Wabenkörpers kann auch dadurch erfolgen, daß die Tragabschnitte durch wenigstens zwei, vorzugsweise drei, Lagen der Ausgleichsschicht gebildet sind. Hierbei ist die Ausgleichsschicht einteilig ausge- bildet und die Lagen sind durch Aufeinanderfalten der Ausgleichsschicht gebildet. Diese Möglichkeit eröffnet eine einfache und kostengünstige Realisierung der Erfindung.The compensating layer arranged between the honeycomb body and the housing is preferably at least partially mat-shaped, as a result of which thermal insulation of the honeycomb body from the housing is also achieved. The compensating layer preferably contains at least one mat made of ceramic fibers, so-called swelling mats preferably being used, which due to their crystalline structure can fill cavities due to swelling due to water absorption. The different strengths in the radial direction over the circumference of the honeycomb body can also be compensated for by the support sections being formed by at least two, preferably three, layers of the compensating layer. In this case, the compensation layer is formed in one piece and the layers are formed by folding the compensation layer onto one another. This possibility opens up a simple and inexpensive implementation of the invention.
Nach einem weiteren erfindungsgemäßen Gedanken wird vorgeschlagen, daß die über den Umfang unterschiedlichen radialen Festigkeitseigenschaften eines Wabenkörpers durch eine entsprechende Ausgestaltung des Gehäuses kompensiert werden. Das Gehäuse weist dazu in Umfangsrichtung des Wabenkörpers wenigstens zwei radial einwärts gerichtete Tragsegmente auf, die in Bereichen einer höheren radialen Festigkeit des Wabenkörpers ausgebildet sind. In den Bereichen der Tragsegmente werden die vom Gehäuse auf den Wabenkörper einwirkenden Kräfte in die Bereiche des Wabenkörpers eingeleitet, in denen der Wabenkörper eine höhere radiale Festigkeit aufweist. Hierdurch wird erreicht, daß die Bereiche des Wabenkörpers, die eine verringerte radiale Festigkeit haben, keine oder nur sehr geringe Kräfte aufnehmen müssen. Auch bei dieser Ausgestaltung befindet sich zwischen dem Gehäuse und dem Wabenkörper vorzugsweise eine Ausgleichsschicht aus Fasermatten, die an den Tragsegmenten stärker komprimiert wird als in den übrigen Umfangsbereichen, so daß sich an den Tragsegmenten wiederum Tragabschnitte ausbilden.According to a further idea according to the invention, it is proposed that the radial strength properties of a honeycomb body, which differ over the circumference, be compensated for by a corresponding design of the housing. For this purpose, the housing has at least two radially inwardly directed support segments in the circumferential direction of the honeycomb body, which are formed in areas of higher radial strength of the honeycomb body. In the areas of the support segments, the forces acting on the honeycomb body from the housing are introduced into the areas of the honeycomb body in which the honeycomb body has a higher radial strength. It is thereby achieved that the areas of the honeycomb body which have a reduced radial strength do not have to absorb any or only very slight forces. In this embodiment, too, there is preferably a compensating layer made of fiber mats between the housing and the honeycomb body, which is more compressed on the support segments than in the other circumferential regions, so that support sections are in turn formed on the support segments.
Die Tragabschnitte können sich über die gesamte axiale Länge des Wabenkörpers erstrecken. Dies ist jedoch nicht zwingend notwendig. Vorteilhaft, insbesondere für axial langgestreckte und nicht exakt gerade produzierte Wabenkörper, kann es sein, wenn die Tragabschnitte sich lediglich über einen Teil der axialen Länge des Wabenkörpers erstrecken, z. B. nur in der Nähe der Stirnseiten angeordnet sind. Es können auch Tragabschnitte vorgesehen werden, die auf der Mantelfläche des Wabenkörpers verteilt ausgebildet sind. Die Anzahl und die Größe der Tragabschnitte sollte jedoch dabei so bemessen sein, daß sichergestellt ist, daß der Wabenkörper fest und haltbar in dem Gehäuse gehalten wird.The support sections can extend over the entire axial length of the honeycomb body. However, this is not absolutely necessary. It can be advantageous, in particular for axially elongated and not exactly straight honeycomb bodies, if the support sections only extend over part of the axial length of the honeycomb body, e.g. B. only in the Are arranged near the end faces. It is also possible to provide support sections which are distributed over the lateral surface of the honeycomb body. The number and size of the support sections should, however, be such that it is ensured that the honeycomb body is held firmly and durably in the housing.
Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung wird vorgeschlagen, daß bei einer Wabenkörperanordnung mit einer geraden Anzahl von Tragabschnitten in einem Querschnitt der Wabenkörperanordnung, diese so angeordnet sind, daß jeweils zwei Tragabschnitte sich diametral gegenüberliegen. In jedem Fall sollten die Tragabschnitte gleichmäßig über den Umfang des Wabenkörpers verteilt sein.According to a further advantageous embodiment of the invention, it is proposed that in a honeycomb body arrangement with an even number of support sections in a cross section of the honeycomb body arrangement, these are arranged such that two support sections are diametrically opposed to each other. In any case, the support sections should be evenly distributed over the circumference of the honeycomb body.
Zur Vereinfachung der Montage der Wabenkörperanordnung und um sicher- zustellen, daß die Tragabschnitte der Ausgleichsschicht in den Bereichen einer höheren radialen Festigkeit des Wabenkörpers angeordnet werden, ist vorgesehen, daß der Wabenkörper und/oder die Ausgleichsschicht und/oder das Gehäuse eine Positionierhilfe aufweisen bzw. aufweist. Hierzu wird insbesondere vorgeschlagen, daß die Positionierhilfe in Form wenigstens einer optischen Markierung ausgebildet ist, wodurch der Zusammenbau einer Wabenkörperanordnung auch automatisierbar ist. Es wird auch vorgeschlagen, daß die Positionierhilfe durch einen Vorsprung oder eine Vertiefung gebildet ist, die dann auch mechanisch ab tastbar ist.In order to simplify the assembly of the honeycomb body arrangement and to ensure that the supporting sections of the compensation layer are arranged in the areas of greater radial strength of the honeycomb body, it is provided that the honeycomb body and / or the compensation layer and / or the housing have a positioning aid or having. For this purpose, it is proposed in particular that the positioning aid is designed in the form of at least one optical marking, as a result of which the assembly of a honeycomb body arrangement can also be automated. It is also proposed that the positioning aid is formed by a projection or a recess, which can then also be felt mechanically.
Nach einem weiteren erfinderischen Gedanken wird vorgeschlagen, daß der Wabenkörper an seiner der Ausgleichsschicht zugewandten Seite wenigstens zwei im Querschnitt radial auswärts gerichtete Wölbungen aufweist, wobei die Wölbungen in Bereichen einer höheren radialen Festigkeit des Wabenkörpers ausgebildet sind. Auch durch diese Lösung wird erreicht, daß die Bereiche des Wabenkörpers, die eine verringerte radiale Festigkeit haben, keine oder nur sehr geringe Kräfte aufnehmen müssen. In besonders vorteilhafter Weise sind die jeweiligen Wölbungen als axial verlaufende flache Wülste ausgebildet, da hierdurch ein optimaler Kraftverlauf in dem Wabenkörper hervorgerufen wird. Die Wölbungen erzeugen in der Ausgleichs- Schicht Tragabschnitte und bewirken bei kreisförmigen Querschnitten des Gehäuses und bis auf die Wölbungen kreisförmigen Querschnitten des Wabenkörpers, daß der Wabenkörper in beliebiger Orientierung eingebaut werden kann und sich die Tragabschnitte immer in den Bereichen höherer radialer Festigkeit ausbilden. Axial verlaufende Wülste können beim Ex- trudieren von Wabenkörpern durch geringfügige Modifikation des Extrusions- querschnittes bereits mit hergestellt werden, ohne daß es eines besonderen Aufwandes bedarf.According to a further inventive idea, it is proposed that the honeycomb body on its side facing the compensating layer has at least two curvatures which are directed radially outwards in cross section, the curvatures being formed in areas of higher radial strength of the honeycomb body. This solution also ensures that the areas of the honeycomb body that have reduced radial strength have to absorb little or no forces. In a particularly advantageous manner, the respective curvatures are designed as axially extending flat beads, since this produces an optimal force profile in the honeycomb body. The curvatures produce support sections in the compensation layer and, in the case of circular cross sections of the housing and circular cross sections of the honeycomb body except for the curvatures, the honeycomb body can be installed in any orientation and the support sections always form in the areas of higher radial strength. Axial beads can already be produced when extruding honeycomb bodies by slightly modifying the extrusion cross-section without requiring any special effort.
Weitere Einzelheiten und Vorteile der Erfindung werden anhand der in der Zeichnung dargestellten Ausführungsbeispiele erläutert, auf die die Erfindung aber nicht beschränkt ist. Es zeigen:Further details and advantages of the invention will be explained with reference to the exemplary embodiments shown in the drawing, to which the invention is, however, not restricted. Show it:
Fig. 1 eine erste Ausführungsform einer Wabenkörperanordnung imFig. 1 shows a first embodiment of a honeycomb body arrangement in
Querschnitt,Cross-section,
Fig. 2 eine erste Ausführungsform eines Tragabschnitte einer Ausgleichsschicht im Querschnitt,2 shows a first embodiment of a support section of a compensation layer in cross section,
Fig. 3 eine zweite Ausführungsform eines Tragabschnitts einer Aus- gleichsschicht im Querschnitt,3 shows a second embodiment of a support section of a compensation layer in cross section,
Fig. 4 eine zweite Ausführungsform einer Wabenkörperanordnung imFig. 4 shows a second embodiment of a honeycomb body arrangement in
Querschnitt und Fig. 5 eine dritte Ausfuhrungsform einer Wabenkörperanordnung imCross section and Fig. 5 shows a third embodiment of a honeycomb body arrangement in
Querschnitt.Cross-section.
In der Fig. 1 ist eine erfindungsgemäße Wabenkörperanordnung im Quer- schnitt dargestellt. Die Wabenkörperanordnung weist in einem Gehäuse 8 einen Wabenkörper 1 mit einer Vielzahl von Kanälen 5 auf. Die Kanäle 5 erstrecken sich in axialer Richtung des Wabenkörpers 1. Jeder Kanal 5 ist durch Trennwände 6, 7 begrenzt. In dem dargestellten Ausführungsbeispiel verlaufen die Trennwände 6, 7 in parallelen bzw. senkrecht aufeinander stehenden Ebenen, wodurch der Wabenkörper 1 über seinen Umfang U unterschiedliche Steifigkeiten in radialer Richtung R aufweist. Mit Pfeilen sind die Richtungen des Wabenkörpers 1 gekennzeichnet, in denen er die höchste radiale Festigkeit aufweist.A honeycomb body arrangement according to the invention is shown in cross section in FIG. 1. The honeycomb body arrangement has a honeycomb body 1 with a multiplicity of channels 5 in a housing 8. The channels 5 extend in the axial direction of the honeycomb body 1. Each channel 5 is delimited by partitions 6, 7. In the exemplary embodiment shown, the partition walls 6, 7 run in parallel or perpendicular planes, as a result of which the honeycomb body 1 has different stiffnesses in the radial direction R over its circumference U. The directions of the honeycomb body 1 are marked with arrows in which it has the highest radial strength.
Der Wabenkörper 1 ist von einer Ausgleichsschicht 2 umgeben. Die Ausgleichsschicht 2, die in dem dargestellten Ausführungsbeispiel in Form einer keramischen Fasermatte ausgebildet ist, liegt an der Innenwand 9 des Gehäuses 8 an.The honeycomb body 1 is surrounded by a compensation layer 2. The compensation layer 2, which in the exemplary embodiment shown is in the form of a ceramic fiber mat, bears against the inner wall 9 of the housing 8.
Die Ausgleichsschicht 2 weist Tragabschnitte 3 auf, die in radialer Richtung R eine höhere Festigkeit aufweisen als die weiteren Abschnitte 4 der Ausgleichsschicht 2. Die Tragabschnitte 3 sind in Bereichen einer höheren radialen Festigkeit des Wabenkörpers 1 angeordnet. In dem dargestellten Ausführungsbeispiel sind jeweils zwei Tragabschnitte 3 sich diametral gegen- überliegend angeordnet. Die Anordnung der Tragabschnitte 3 ist abhängig von der Festigkeitsverteilung des Wabenkörpers 1. So ist es insbesondere bei im Querschnitt hexagonal ausgebildeten Kanälen bzw. Kanalanordnungen (nicht gezeigt) vorteilhaft, Über den Umfang U der Wabenkörperanordnung sechs, in Umfangsrichtung U über jeweils 60° voneinander beabstandete Tragabschnitte 3 an den Stellen vorzusehen, an denen der Wabenkörper 1 seine jeweils höchste radiale Festigkeit aufweist.The compensating layer 2 has support sections 3 which have a higher strength in the radial direction R than the other sections 4 of the compensating layer 2. The support sections 3 are arranged in areas of higher radial strength of the honeycomb body 1. In the illustrated embodiment, two support sections 3 are arranged diametrically opposite one another. The arrangement of the support sections 3 is dependent on the strength distribution of the honeycomb body 1. It is particularly advantageous in the case of channels or channel arrangements (not shown) with a hexagonal cross section that are six over the circumference U of the honeycomb arrangement, spaced 60 ° apart in the circumferential direction U. To provide support sections 3 at the points at which the honeycomb body 1 has its highest radial strength.
Die von dem Gehäuse 8 radial einwärts gerichteten Kräfte werden im wesentlichen über die Tragabschnitte 3 der Ausgleichsschicht 2 in den Wabenkörper 1 eingeleitet. Die Tragabschnitte 3 erstrecken sich wenigstens teilweise in axialer Richtung des Wabenkörpers 1. Vorzugsweise erstrecken sich die Tragabschnitte 3 über die gesamte axiale Länge des Wabenkörpers 1.The forces directed radially inwards from the housing 8 are essentially introduced into the honeycomb body 1 via the support sections 3 of the compensating layer 2. The support sections 3 extend at least partially in the axial direction of the honeycomb body 1. The support sections 3 preferably extend over the entire axial length of the honeycomb body 1.
In der Fig. 2 ist schematisch eine Ausgestaltung eines Tragabschnitts 3 einer Ausgleichsschicht 2 dargestellt. Der Tragabschnitt wird durch eine Einlage 10 gebildet ist. Die Einlage 10 besteht aus einem metallischen Werkstoff.2 schematically shows an embodiment of a support section 3 of a compensating layer 2. The support section is formed by an insert 10. The insert 10 consists of a metallic material.
Fig. 3 zeigt ein weiteres Ausführungsbeispiel eines Tragabschnitts 3 einer Ausgleichsschicht 2, der durch drei Lagen 11, 12, 13 der Ausgleichsschicht 2 gebildet ist, die aufeinandergefaltet sind.FIG. 3 shows a further exemplary embodiment of a support section 3 of a compensating layer 2, which is formed by three layers 11, 12, 13 of the compensating layer 2, which are folded onto one another.
Fig. 4 zeigt eine zweite Ausführungsform einer Wabenkörperanordnung im Querschnitt. Das Gehäuse 8 bei dieser Ausführungsform weist in Umfangs- richtung U des Wabenkörpers 1 radial einwärts gerichtete Tragsegmente 16 auf. Die Tragsegmente 16 sind in Bereichen erhöhter radialer Festigkeit des Wabenkörpers 1 ausgebildet. Die von dem Gehäuse 8 radial einwärts gerichteten Kräfte werden im wesentlichen über die Tragsegmente 16 und die dadurch in der Ausgleichsschicht 2 entstehenden Tragabschnitte 3 in Bereiche eingeleitet, in denen der Wabenkörper 1 eine höhere radiale Festigkeit aufweist, wodurch eine Beschädigung des Wabenkörpers 1 beim Einbau in das Gehäuse 8 und beim späteren Betrieb vermieden wird. Bei den Ausführungsformen gemäß Fig. 1 und 4 ist es erforderlich, daß ein Wabenkörper 1 mit richtiger relativer Lage in ein Gehäuse 8 eingebaut wird. Es gibt viele Möglichkeiten, dies auch bei automatisierter Großserienfertigung sicherzustellen. Eine besonders vorteilhafte besteht darin, den Wabenkörper 1 mit einer optisch und/oder mechanisch abtastbaren Positionierhilfe 18 zu versehen. Dies ist kann allerdings bei nicht kreisförmigen Querschnitten von Wabenkörper 1 und Gehäuse 8, für die sich die vorliegende Erfindung ebenfalls eignet, unterbleiben, da deren Relativlage durch die Querschnittsform, z. B. Oval oder Ellipse, festgelegt ist.4 shows a second embodiment of a honeycomb body arrangement in cross section. The housing 8 in this embodiment has support segments 16 directed radially inwards in the circumferential direction U of the honeycomb body 1. The support segments 16 are formed in areas of increased radial strength of the honeycomb body 1. The forces directed radially inward from the housing 8 are essentially introduced via the support segments 16 and the support sections 3 thus created in the compensating layer 2 into areas in which the honeycomb body 1 has a higher radial strength, thereby damaging the honeycomb body 1 when installed in the housing 8 and later operation is avoided. 1 and 4, it is necessary that a honeycomb body 1 is installed in a housing 8 with the correct relative position. There are many ways to ensure this even with automated large series production. A particularly advantageous is to provide the honeycomb body 1 with a positioning aid 18 that can be scanned optically and / or mechanically. However, this can be omitted in the case of non-circular cross sections of honeycomb body 1 and housing 8, for which the present invention is also suitable, since their relative position due to the cross-sectional shape, for. B. oval or ellipse.
In Fig. 5 ist eine weitere Ausführungsform einer erfindungsgemäßen Katalysatoranordnung im Querschnitt dargestellt. Bei diesem Ausführungsbeispiel weist der Wabenkörper 1 in den Umfangsbereichen seiner höchsten radialen Festigkeit radial nach außen gerichtete Wölbungen 17 auf, welche in der Ausgleichsschicht 2 Tragabschnitte 3 erzeugen. Bevorzugt bilden die Wölbungen 17 flache, sich axial über die ganze Länge des Wabenkörpers 1 erstreckende Wülste, so daß eine Herstellung durch Extrusion möglich ist. Die Wirkung der Wülste auf die Ausgleichsschicht 2 ist die gleiche wie die der Tragsegmente 16 in Fig. 4, nur daß die Wölbungen 17 immer lagerich- tig am Wabenkörper 1 angeordnet sich, wohingegen die Tragsegmente 16 erst lagerichtig zum Wabenkörper 1 aungeordnet werden müssen.5 shows a further embodiment of a catalyst arrangement according to the invention in cross section. In this exemplary embodiment, the honeycomb body 1 has radially outwardly directed curvatures 17 in the circumferential regions of its highest radial strength, which produce support sections 3 in the compensating layer 2. The arches 17 preferably form flat beads which extend axially over the entire length of the honeycomb body 1, so that production by extrusion is possible. The effect of the beads on the compensating layer 2 is the same as that of the support segments 16 in FIG. 4, except that the arches 17 are always arranged in the correct position on the honeycomb body 1, whereas the support segments 16 first have to be arranged in the correct position relative to the honeycomb body 1.
Selbstverständlich ist es möglich, Tragabschnitte 3 in der Ausgleichsschicht 2 durch Magleichzeitige Maßnahmen an der Ausgleichsschicht 2 und/oder dem Gehäuse 8 und/oder dem Wabenkörper 1 zu erzeugen. So kann insbesondere vorgesehen sein, daß alternierend Tragabschnitte 3 durch Maßnahmen an dem Gehäuse 8, dem Wabenkörper 1 und/oder der Ausgleichsschicht 2 erzeugt werden. Die vorliegende Erfindung eignet sich besonders für die Massenproduktion von Wabenkörperanordnungen, wie sie im Automobilbau zur Abgasreinigung benötigt werden. Insbesondere können dünnwandige keramische Wabenkörper erfindungsgemäß einfach und haltbar in metallische Gehäuse eingebaut werden. Bei der Verwendung solcher Wabenkörperanordnungen als Katalysatoren erhöht sich durch die vorliegende Erfindung auch die thermische Wechselbelastbarkeit der Anordnungen, was einen motornahen Einbau erleichtert. Geeignet ist die Erfindung aber auch für Wabenkörper, die als Träger anderer Abgasreinigungsmittel, wie Kohlenwasserstofffallen, NOx-Speicher, Wasserfallen etc. eingesetzt werden. Of course, it is possible to produce support sections 3 in the compensation layer 2 by simultaneous measures on the compensation layer 2 and / or the housing 8 and / or the honeycomb body 1. In particular, it can be provided that alternating support sections 3 are produced by measures on the housing 8, the honeycomb body 1 and / or the compensating layer 2. The present invention is particularly suitable for the mass production of honeycomb body assemblies, such as are required for exhaust gas purification in automobile construction. In particular, thin-walled ceramic honeycomb bodies can be installed easily and durably in metallic housings according to the invention. When such honeycomb body arrangements are used as catalysts, the present invention also increases the thermal cycling capacity of the arrangements, which facilitates installation close to the engine. However, the invention is also suitable for honeycomb bodies which are used as carriers for other exhaust gas cleaning agents, such as hydrocarbon traps, NOx traps, water traps, etc.
BezugszeichenlisteReference list
1 Katalysatorträgerkörper1 catalyst carrier body
2 Ausgleichsschicht2 leveling layer
3 Tragabschnitt3 support section
4 übrige Umfangsbereiche4 remaining peripheral areas
5 Kanal5 channel
6, 7 Trennwand6, 7 partition
8 Gehäuse8 housing
9 Innenwand9 inner wall
10 Einlage10 insert
11, 12, 13 Lagen der Ausgleichsschicht11, 12, 13 layers of the leveling layer
16 Tragsegment16 support segment
17 Wölbung17 curvature
18 Positionierhilfe18 Positioning aid
U Umfang R Radiale Richtung U circumference R radial direction

Claims

Ansprüche Expectations
1. Wabenkörperanordnung mit einem metallischen Gehäuse (8), in dem ein Wabenkörper (1) mit einer Vielzahl von durch Trennwände (6, 7) voneinander getrennten Kanälen (5) angeordnet ist, der über seinen1. honeycomb body arrangement with a metallic housing (8), in which a honeycomb body (1) with a plurality of channels (5) separated from one another by partition walls (6, 7) is arranged over its
Umfang (U) unterschiedliche radiale Festigkeiten aufweist, und mit einer zumindest in Teilbereichen des Umfanges (U) zwischen dem Gehäuse (8) und dem Wabenkörper (1) angeordneten Ausgleichsschicht (2), dadurch gekennzeichnet, daß die Ausgleichsschicht (2) in der Umfangsrich- tung (U) des Wabenkörpers (1) wenigstens zwei Tragabschnitte (3) aufweist, die in radialer Richtung (R) höhere Kräfte auf den Wabenkörper ausüben als außerhalb der Tragabschnitte (3) in den übrigen Umfangsbereichen (4), wobei die Tragabschnitte (3) in Bereichen einer höheren radialen Festigkeit des Wabenkörpers (1) liegen.The circumference (U) has different radial strengths, and with a compensation layer (2) arranged at least in partial regions of the circumference (U) between the housing (8) and the honeycomb body (1), characterized in that the compensation layer (2) extends in the circumferential direction - device (U) of the honeycomb body (1) has at least two support sections (3) which exert higher forces on the honeycomb body in the radial direction (R) than outside the support sections (3) in the other peripheral regions (4), the support sections ( 3) lie in areas of higher radial strength of the honeycomb body (1).
2. Wabenkörperanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Wabenkörper ein keramischer, insbesondere extrudierter, Wabenkörper mit ebenen Trennwänden (7) ist, dessen radiale Festigkeit in Richtung der Trennwände (7) höher als in anderen Richtungen ist.2. honeycomb body arrangement according to claim 1, characterized in that the honeycomb body is a ceramic, in particular extruded, honeycomb body with flat partitions (7), the radial strength in the direction of the partitions (7) is higher than in other directions.
3. Wabenkörperanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Tragabschnitte (3) ein gegenüber den übrigen Umfangsbereichen (4) höheres Gewicht pro Flächeneinheit aufweisen.3. honeycomb body arrangement according to claim 1 or 2, characterized in that the supporting sections (3) have a higher weight per unit area than the other peripheral regions (4).
4. Wabenkörperanordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Tragabschnitte (3) eine gegenüber den übrigen Umfangsbereichen (4) höhere Dichte aufweisen. 4. honeycomb body arrangement according to claim 3, characterized in that the support sections (3) have a higher density than the other peripheral regions (4).
5. Wabenkörperanordnung nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, daß die Tragabschnitte (3) wenigstens teilweise durch wenigstens eine Einlage (10) gebildet sind.5. honeycomb body assembly according to claim 1, 2, 3 or 4, characterized in that the support sections (3) are at least partially formed by at least one insert (10).
6. Wabenkörperanordnung nach Anspruch 5, dadurch gekennzeichnet, daß die Einlage (10) eine Struktur aufweist, die dem Tragabschnitt (3) eine gegenüber den weiteren Abschnitten (4) höhere Festigkeit verleiht.6. honeycomb body assembly according to claim 5, characterized in that the insert (10) has a structure which gives the support section (3) a higher strength than the other sections (4).
7. Wabenkörperanordnung nach Anspruch 5 oder 6, dadurch gekennzeich- net, daß die Einlage (10) aus einem Material besteht, das gegenüber einem Material der übrigen Umfangsbereiche (4) eine höhere Festigkeit aufweist.7. honeycomb body arrangement according to claim 5 or 6, characterized in that the insert (10) consists of a material which has a higher strength compared to a material of the other peripheral regions (4).
8. Wabenkörperanordnung nach Anspruch 5, 6 oder 7 dadurch gekenn- zeichnet, daß die Einlage (10) aus einem metallischen Material besteht.8. honeycomb body assembly according to claim 5, 6 or 7, characterized in that the insert (10) consists of a metallic material.
9. Wabenkörperanordnung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Ausgleichsschicht (2) wenigstens teilweise matten- förmig ausgebildet ist.9. honeycomb body arrangement according to one of claims 1 to 8, characterized in that the compensating layer (2) is at least partially mat-shaped.
10. Wabenkörperanordnung nach Anspruch 9, dadurch gekennzeichnet, daß die Ausgleichsschicht (2) eine Matte aus keramischen Fasern, insbesondere eine Quellmatte, ist.10. honeycomb body arrangement according to claim 9, characterized in that the compensating layer (2) is a mat made of ceramic fibers, in particular a swelling mat.
11. Wabenkörperanordnung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die Tragabschnitte (3) durch wenigstens zwei, vorzugsweise drei, Lagen (11, 12, 13) der Ausgleichsschicht (2) gebildet sind.11. honeycomb body arrangement according to claim 9 or 10, characterized in that the supporting sections (3) by at least two, preferably three, layers (11, 12, 13) of the compensating layer (2) are formed.
12. Wabenkörperanordnung nach einem der Ansprüche 1 bis 11 , dadurch gekennzeichnet, daß das Gehäuse (8) in Umfangsrichtung (U) des Wabenkörpers (1) wenigstens zwei radialeinwärts gerichtete Tragsegmente (16) zur Ausbildung der Tragabschnitte <3) aufweist.12. honeycomb body arrangement according to one of claims 1 to 11, characterized in that the housing (8) in the circumferential direction (U) of the Honeycomb body (1) has at least two radially inwardly directed support segments (16) for forming the support sections <3).
13. Wabenkörperanordnung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß bei einer geraden Anzahl von Tragabschnitten (3) in einem Querschnitt jeweils zwei Tragabschnitte (3) sich diametral gegenüberliegen.13. honeycomb body arrangement according to one of claims 1 to 12, characterized in that with an even number of support sections (3) in each case two support sections (3) are diametrically opposed in a cross section.
14. Wabenkörperanordnung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß der Wabenkörper (1) und/oder die Ausgleichsschicht14. honeycomb body arrangement according to one of claims 1 to 13, characterized in that the honeycomb body (1) and / or the compensating layer
(2) und/oder das Gehäuse (8) wenigstens eine Positionierhilfe (18) zur richtigen relativen Positionierung von Wabenkörper (1) und Gehäuse (8) bzw. Ausgleichsschicht (2) aufweisen.(2) and / or the housing (8) have at least one positioning aid (18) for the correct relative positioning of the honeycomb body (1) and the housing (8) or compensation layer (2).
15. Wabenkörperanordnung nach Anspruch 14, dadurch gekennzeichnet, daß die Positionierhilfe in Form optischer Markierungen ausgebildet ist.15. honeycomb body arrangement according to claim 14, characterized in that the positioning aid is designed in the form of optical markings.
16. Wabenkörperanordnung nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß die Positionierhilfe durch mindestens einen Vorsprung oder eine Vertiefung gebildet ist.16. honeycomb body arrangement according to claim 14 or 15, characterized in that the positioning aid is formed by at least one projection or a recess.
17. Wabenkörperanordnung nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß sich die Tragabschnitte (3) wenigstens über einen Teil der axialen Länge des Wabenkörpers (1) erstrecken.17. honeycomb body arrangement according to one of claims 1 to 16, characterized in that the supporting sections (3) extend at least over part of the axial length of the honeycomb body (1).
18. Katalysatoranordnung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß der Wabenkörper (1) an seiner der Ausgleichsschicht (2) zugewandten Seite wenigstens zwei radial auswärts gerichtete Wölbungen (17) zur Ausbildung der Tragabschnitte (3) aufweist, wobei die Wölbungen (17) in Bereichen einer höheren radialen Festigkeit des Wabenkörpers (1) ausgebildet sind.18. Catalyst arrangement according to one of claims 1 to 17, characterized in that the honeycomb body (1) on its side facing the compensating layer (2) has at least two radially outward curvatures (17) for forming the support sections (3), wherein the curvatures (17) are formed in areas of higher radial strength of the honeycomb body (1).
19. Wabenkörperanordnung nach Anspruch 18, dadurch gekennzeichnet, daß die Wölbungen (17) als axial durchgehende Wulste ausgebildet sind.19. honeycomb body arrangement according to claim 18, characterized in that the curvatures (17) are designed as axially continuous beads.
20. Wabenkörperanordnung nach Anspruch 18 oder 19, dadurch gekennzeichnet, daß die Wölbungen (17) durch Extrudieren des Wabenkörpers (1) mittels eines entsprechend geformten Extrusionswerkzeuges hergestellt sind. 20. Honeycomb body arrangement according to claim 18 or 19, characterized in that the curvatures (17) are produced by extruding the honeycomb body (1) by means of an appropriately shaped extrusion tool.
EP98958845A 1997-09-30 1998-09-29 Honeycomb body structure with supporting sections Withdrawn EP1019617A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19743196A DE19743196A1 (en) 1997-09-30 1997-09-30 Automotive catalytic converter has mantle lining compensating for differential radial forces
DE19743196 1997-09-30
DE29800038U DE29800038U1 (en) 1997-09-30 1998-01-02 Honeycomb structure with support sections
DE29800038U 1998-01-02
PCT/EP1998/006171 WO1999017006A1 (en) 1997-09-30 1998-09-29 Honeycomb body structure with supporting sections

Publications (1)

Publication Number Publication Date
EP1019617A1 true EP1019617A1 (en) 2000-07-19

Family

ID=26040454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98958845A Withdrawn EP1019617A1 (en) 1997-09-30 1998-09-29 Honeycomb body structure with supporting sections

Country Status (7)

Country Link
US (1) US6316384B1 (en)
EP (1) EP1019617A1 (en)
JP (1) JP2001518589A (en)
CN (1) CN1272161A (en)
BR (1) BR9812396A (en)
RU (1) RU2208686C2 (en)
WO (1) WO1999017006A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6159430A (en) * 1998-12-21 2000-12-12 Delphi Technologies, Inc. Catalytic converter
DE10045540A1 (en) * 2000-09-13 2002-03-21 Emitec Emissionstechnologie Honeycomb body with shortened, slotted inner jacket tube
JP2003260322A (en) * 2002-03-08 2003-09-16 Ngk Insulators Ltd Honeycomb structure, method for manufacturing the same, and system for cleaning waste gas
DE102004063546A1 (en) * 2004-12-30 2006-07-13 Emitec Gesellschaft Für Emissionstechnologie Mbh Honeycomb body with at least partially ceramic honeycomb structure and receptacle for measuring sensor
JP4511396B2 (en) * 2005-03-22 2010-07-28 日本碍子株式会社 Honeycomb structure and manufacturing method thereof
JP5144075B2 (en) * 2006-03-30 2013-02-13 日本碍子株式会社 Honeycomb structure and manufacturing method thereof
MX2008015069A (en) * 2006-05-31 2008-12-10 Unifrax I Llc Backup thermal insulation plate.
DE102007026108A1 (en) * 2007-06-05 2008-12-11 Robert Bosch Gmbh Filter and catalyst element
JP4918433B2 (en) 2007-08-09 2012-04-18 ニチアス株式会社 Catalytic converter, holding material for catalytic converter and method for producing the same
DE102008025593A1 (en) * 2008-05-28 2009-12-03 Emitec Gesellschaft Für Emissionstechnologie Mbh Metallic honeycomb body with defined joints
EP2464840A4 (en) 2009-08-10 2013-10-30 Unifrax I Llc Variable basis weight mounting mat or pre-form and exhaust gas treatment device
JP2012041875A (en) * 2010-08-19 2012-03-01 Toyota Motor Corp Catalytic converter device
JP6023462B2 (en) * 2012-05-08 2016-11-09 株式会社ユタカ技研 Exhaust gas purification device and manufacturing method thereof
JP2016519740A (en) * 2013-02-14 2016-07-07 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ Materials and methods for sealing voids
WO2016153955A1 (en) * 2015-03-23 2016-09-29 Corning Incorporated Exhaust gas treatment article and methods of manufacturing same
JP6562861B2 (en) * 2016-03-25 2019-08-21 日本碍子株式会社 Honeycomb structure
PL3464488T3 (en) 2016-06-06 2021-12-06 Unifrax I Llc Refractory coating material containing low biopersistent fibers and method for making the same
US10272950B1 (en) 2016-08-23 2019-04-30 Extreme Trailers Llc Load support deck for cargo carrying vehicle
DE102018109515B4 (en) 2018-04-20 2021-06-24 Tenneco Gmbh Housing cover with recess
JP2020033935A (en) * 2018-08-30 2020-03-05 スリーエム イノベイティブ プロパティズ カンパニー Holding material, manufacturing method thereof and pollution control device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853485A (en) 1972-12-11 1974-12-10 Corning Glass Works Core member for catalytic oxidation converter
DE7401002U (en) 1973-01-13 1974-04-11 T I Silencer Services Ltd Container for catalytic converter for controlling and monitoring exhaust emissions in internal combustion engines
JPH0356354Y2 (en) 1986-04-08 1991-12-18
US4985212A (en) * 1987-09-29 1991-01-15 Kabushiki Kaisha Toshiba Support apparatus for a ceramic honeycomb element
JPH0830407B2 (en) * 1988-03-22 1996-03-27 日本碍子株式会社 Ceramic honeycomb structure
JP2581774B2 (en) * 1988-07-28 1997-02-12 日本碍子株式会社 Ceramic honeycomb structure and method of manufacturing the same
DE4001419C1 (en) 1990-01-19 1991-06-13 Leistritz Ag, 8500 Nuernberg, De Exhaust gas catalyser - comprises corrugated housing with middle section having elastic mat, covering several catalyst supports
JP3224609B2 (en) * 1992-09-29 2001-11-05 新日本製鐵株式会社 Metal carrier for exhaust gas purification catalyst
DE4300477A1 (en) 1993-01-11 1994-07-14 Emitec Emissionstechnologie Extruded honeycomb body made of ceramic and / or metallic material with increased flexibility
JP3768550B2 (en) 1994-03-11 2006-04-19 日本碍子株式会社 Ceramic honeycomb structure
DE19537131A1 (en) * 1995-10-05 1997-04-10 Emitec Emissionstechnologie Electrically heatable honeycomb body with stiffened power distribution structures

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9917006A1 *

Also Published As

Publication number Publication date
CN1272161A (en) 2000-11-01
RU2208686C2 (en) 2003-07-20
JP2001518589A (en) 2001-10-16
BR9812396A (en) 2000-09-12
US6316384B1 (en) 2001-11-13
WO1999017006A1 (en) 1999-04-08

Similar Documents

Publication Publication Date Title
EP1019617A1 (en) Honeycomb body structure with supporting sections
DE112013000720B4 (en) Honeycomb structure
DE112013000714B4 (en) honeycomb structural body
EP0387422B1 (en) Apparatus for catalytic or other purification of exhaust gases of internal combustion engines, with two exhaust gas treating bodies and a protection ring between them
DE3043996A1 (en) EXHAUST GAS FLOWED PARTICULATE FILTER FOR DIESEL MACHINES
EP0542805B1 (en) Honeycomb body with channels having different cross-sectional dimensions, in particular catalyzer bearing body
EP1089819B1 (en) Monolithic, metallic honeycomb bodies with a number of varying channels
EP0220468A1 (en) Catalyst support body made of wound or layered sheet metal having a structure with two or more corrugations
EP1753520B1 (en) Cleaning insert for exhaust emission control systems in particular for particle filters
DE68912673T2 (en) Honeycomb structure and process for its manufacture.
WO1998033593A1 (en) Extruded honeycomb body, in particular catalyst support body, with a reinforced wall structure
DE4345130C1 (en) Hollow cylindrical filter element
DE112006000111B4 (en) Nonwoven fabric for supporting a honeycomb body in an exhaust pipe
DE102007026810A1 (en) Production process for exhaust treatment devices, such as e.g. Catalytic converters and particle filters
DE29800038U1 (en) Honeycomb structure with support sections
EP1584801B1 (en) Device for purifying a motor vehicle exhaust gas, especially for a particle filter and motor vehicle comprising such device
EP2194251B1 (en) Self-supporting holder for catalytic converter support
DE10164036A1 (en) Flexible pipe element
DE20214954U1 (en) Assembly of gas generator and generator carrier
EP1751408B1 (en) Exhaust particulate filter
WO1994015712A1 (en) Extruded honeycomb elements made of ceramic and/or metallic material with enhanced flexibility
EP1002188B1 (en) Gas exhaust system
DE202011000058U1 (en) composite component
DE19814585A1 (en) Exhaust system closely coupling catalyst to engine
WO2006008114A1 (en) Exhaust-gas purification device for motor vehicles

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

17P Request for examination filed

Effective date: 20000302

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR

17Q First examination report despatched

Effective date: 20010608

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20011219