EP0585432B1 - Dispositif de filtration pour eliminer les particules de suie des gaz d'echappement d'un moteur a combustion interne - Google Patents

Dispositif de filtration pour eliminer les particules de suie des gaz d'echappement d'un moteur a combustion interne Download PDF

Info

Publication number
EP0585432B1
EP0585432B1 EP93905339A EP93905339A EP0585432B1 EP 0585432 B1 EP0585432 B1 EP 0585432B1 EP 93905339 A EP93905339 A EP 93905339A EP 93905339 A EP93905339 A EP 93905339A EP 0585432 B1 EP0585432 B1 EP 0585432B1
Authority
EP
European Patent Office
Prior art keywords
filter
heating
heating loops
loops
channels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93905339A
Other languages
German (de)
English (en)
Other versions
EP0585432A1 (fr
Inventor
Franz Pischinger
Gerhard Lepperhoff
Georg HÜTHWOHL
Rolf Backes
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.)
FEV Europe GmbH
Original Assignee
FEV Motorentechnik 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 FEV Motorentechnik GmbH and Co KG filed Critical FEV Motorentechnik GmbH and Co KG
Publication of EP0585432A1 publication Critical patent/EP0585432A1/fr
Application granted granted Critical
Publication of EP0585432B1 publication Critical patent/EP0585432B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • Y10S55/10—Residue burned
    • 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 filter arrangement for removing soot particles from exhaust gases of an internal combustion engine, in particular a diesel engine, according to the preamble of claim 1.
  • Exhaust aftertreatment systems are known for reducing particle emissions, particularly in diesel engines. These usually consist of filter systems that retain and collect the particles present in the exhaust gas. The soot particles retained in the filter increase the flow resistance in the exhaust system, which increases the exhaust gas back pressure of the engine. This leads to an increase in fuel consumption and, in extreme cases, to engine shutdown. It is therefore necessary to remove the soot particles deposited in the filter, which can be done, for example, by oxidation at high temperatures.
  • honeycomb filters made of a porous ceramic material have proven to be expedient as filter bodies for the retention of the soot particles.
  • These honeycomb filters are formed by a large number of parallel filter channels, which are alternately closed on the gas inlet side and gas outlet side, so that the exhaust gases flow through the porous filter walls and the soot particles separate on the walls of the filter channels.
  • For Regeneration of the filter it is possible, for example, to increase the exhaust gas temperature to such an extent that the ignition temperature of the soot particles attached to the walls of the filter channels is reached and burn them. The temperatures required for this are not reached in the required frequency, at least in vehicle diesel engines, so that regeneration is not ensured.
  • Additional engine measures to increase the exhaust gas temperature can also be associated with a considerable increase in fuel consumption.
  • the use of additional energy, for example by additional burners to increase the exhaust gas temperature requires high performance and thus leads to an increase in the vehicle's energy consumption.
  • Energy-efficient regeneration can be achieved if the soot layer deposited on the filter body is ignited selectively by a brief supply of energy in the inlet area of the filter channels. The energy release during the soot combustion that then begins can lead to self-supporting soot combustion, since the heat released is greater than the heat dissipated.
  • resistance heating elements are provided on the inlet-side end face of the filter body, each with a supply line and a discharge line, which form heating zones for adjacent end face regions.
  • the size of the heating zone acted upon by the respective resistance heating element is determined by the electrical resistance of the heating element required for the heat release for a given wire cross-section and given wire material and the power of the existing power supply, in particular the existing vehicle alternator.
  • the division of the end face of the filter body into a corresponding number of heating zones enables practically all filter channels in the area heat their inlet opening despite the limitation of the available electrical power. This takes place in that the individual resistance heating elements are switched on and off again in succession via a switching device, so that the soot deposits in the filter channels of each heating zone are continuously burned off in a corresponding cycle.
  • the resistance heating elements are formed from at least one meandering wire, the loops of which are each inserted into an inlet opening of the filter channel.
  • the free ends of the meander are each connected via a connecting element to a feed line or discharge line which is guided at a distance over the end face of the filter body.
  • a connecting element to a feed line or discharge line which is guided at a distance over the end face of the filter body.
  • the invention has for its object to reliably prevent migration of the heating loops without additional brackets with low construction costs.
  • the object is achieved by the means of claim 1. Due to the positive connection provided according to the invention between the heating loops on the one hand and the walls of the filter channels of the filter body, on the other hand, the resistance heating elements are properly and reliably fixed to the filter body without additional fastening elements being required for this.
  • the flanks of heating loops are fixed by grooves in the filter channel and corresponding bulges of the heating loops in the area of their flanks. It can also be provided that the heating loops are fixed by grooves in the area of the filter face and corresponding bulges of the heating loops in the area of their flanks.
  • a further advantageous embodiment provides that the heating loops have barbs which inhibit the outward movement of the heating loops, and these barbs can be produced by appropriately bending the heating wire. It can also be advantageous that the roughness of the heating wire and / or the filter material is such that an outward movement of the heating loops is inhibited.
  • the filter material and the heating loops are positively connected by heating the heating conductor to the melting temperature of the ceramic material of the filter body.
  • the resistance heating element of a filter arrangement consists of a meandering heating conductor 1, the flanks 2 of which dip into the inlet opening of filter channels 5 of a filter body 6 designed as a honeycomb filter.
  • the flanks 2 are connected on the filter face or in the channel by cross connections 3, 4.
  • the exhaust gas flow flows through the filter channels 5 in the direction of arrow 7.
  • the heating conductor is shaped in such a way that no force can form on the filter face on the filter wall in the event of thermal expansion of the loops or in the event of vibrations.
  • barbs 8 are incorporated into the flanks 2 of the heating conductor 1. This has the effect that when the heating conductor 1 is stretched by electrical heating, the heating conductor 1 can migrate into the filter channel 5 in the direction of the exhaust gas flow 7. During the subsequent cooling, the length of the heating conductor 1 is shortened, and the barbs 8 pull the upper conductor region into the wall of the filter channel 5, so that an outward movement of the heating conductor 1 is prevented.
  • barbs 8 into the wire material can e.g. 3 by upsetting or knurling. It is also possible to incorporate micro scales using special surface processing.
  • micro scale structure 10 into the ceramic material 9 of the filter channel 5. This can be achieved by special shaping of the surface of the mouthpiece of the extrusion machine. It is also possible to introduce the micro scales by means of special particles which are added to the ceramic mass during the extrusion and which are washed out or melted out after the extrusion. During extrusion, these additional particles align on the surface in the direction of extrusion and thus generate the micro scales.
  • surface treatment of the heating conductor or the filter wall can produce a friction pairing which has a higher coefficient of friction in the direction of the filter face than in the immersion direction.
  • the frictional resistance of the filter material is e.g. influenced by special surface treatment of the extrusion tool.
  • the frictional resistance of the wire material is adjusted by applying barbs or using a suitable surface treatment (e.g. knurling).
  • the ceramic wall in the contact area with the heating conductor is adapted to its shape, so that positive connections are formed in the area of the barbs and the meander is fixed.
  • the channel cross section of the filter inlet channel 5 is narrowed on the inlet side by compressing the ceramic material before firing.
  • the shape of the heating conductor 11 is adapted to the shape of the filter wall.
  • the narrowing of the channel in the area of the filter face can e.g. by plastic deformation of the extruded filter blank before the actual firing process.
  • the heating conductor 11 is given a shape corresponding to the constriction in the region of the flank, as a result of which an additional force counteracts the migration of the heating conductor 11.
  • the flank 2 of the Heating conductor 12 additionally incorporated into the wall of the filter channel 5 by heating or vibration.
  • the meandering shape receives an additional nose 13 in the area of the loop on the filter inlet side.
  • the nose 13 of the flank 2 lies in a recess 14 in the channel wall. This prevents the meander from migrating.
  • the nose 13 of the flank 2 is bent such that the resistance to an outward movement of the heating loop out of the filter channel 5 is higher than the resistance against the heating loop being pushed into the filter channel 5. This is advantageous achieved a particularly secure locking of the heating loop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

Dispositif de filtration pour éliminer les particules de suie des gaz brûlés d'un moteur à combustion interne notamment d'un moteur diesel, qui comprend au moins un élément de filtration (6) réalisé dans un matériau poreux constitué par des canaux de filtration (5) disposés les uns contre les autres pour former des alvéoles. Dans la zone de l'orifice d'entrée respectif des canaux de filtration (5) ouverts du côté de l'arrivée des gaz, est monté un élément de chauffage ohmique (1) affecté à plusieurs orifices d'entrée, Ledit élément de chauffage (1) pénètre en formant une bouche, dans les canaux de filtration (5) et est relié par un conducteur d'amenée et une dérivation à une alimentation un courant électrique. Dans ce dispositif, il est prévus afin d'éviter que les éléments de chauffage ohmiques (1) ne dérivent, que la surface des canaux de filtration (5) et que les éléments de chauffage (1) pénétrant en formant des boucles dans les canaux de filtration soient conçus de manière que la résistance s'opposant à un mouvement des boucles de chauffage vers l'extérieur du canal de filtration (5) soit au moins aussi grande que la résistance s'opposant à l'introduction de boucles de chauffage dans le canal de filtration (5).

Claims (8)

  1. Dispositif de filtration pour éliminer les particules de calamine des gaz d'échappement d'un moteur à combustion interne notamment d'un moteur Diesel, comprenant au moins un corps filtrant (6) en une matière filtrante poreuse qui est formé par des canaux de filtration (5) disposés les uns par rapport aux autres en forme de nids d'abeilles, sachant que dans la zone de l'orifice d'entrée des canaux de filtration (5) ouverts du côté de l'arrivée des gaz est disposé un élément chauffant à résistance (1) ayant la forme de boucles de chauffage et associé à plusieurs orifices d'entrée, qui plonge dans les canaux de filtration (5) et est relié à une source de courant par le biais d'une ligne d'alimentation et d'une ligne de dérivation, caractérisé en ce que les boucles de chauffage sont reliées par engagement positif aux parois des canaux de filtration (5), sachant que la surface des canaux de filtration (5), d'une part, et les boucles de chauffage des éléments chauffants (1) plongeant dans les canaux de filtration (5), d'autre part, sont réalisées de telle manière que la résistance opposée à un mouvement sortant des boucles de chauffage hors du canal de filtration (5) est au moins aussi grande que la résistance opposée à la pénétration des boucles de chauffage dans le canal de filtration (5).
  2. Dispositif de filtration selon la revendication 1, caractérisé en ce que la section transversale des canaux de filtration (5) est rétrécie du côté de l'entrée.
  3. Dispositif de filtration selon la revendication 1, caractérisé en ce que les flancs (2) des boucles de chauffage sont fixés par des rainures (14) dans le canal de filtration (5) et par des saillies correspondantes (13) des boucles de chauffage dans la zone de leurs flancs (2).
  4. Dispositif de filtration selon la revendication 1, caractérisé en ce que les boucles de chauffage sont fixées par des rainures dans la zone d'entrée des canaux de filtration (5) et par des saillies correspondantes (13) des boucles de chauffage dans la zone de leurs flancs (2).
  5. Dispositif de filtration selon la revendication 1, caractérisé en ce que les boucles de chauffage présentent des barbes (8) les empêchant d'effectuer un mouvement sortant.
  6. Dispositif de filtration selon la revendication 5, caractérisé en ce que les barbes (8) sont réalisées en pliant le conducteur chauffant.
  7. Dispositif de filtration selon la revendication 1, caractérisé en ce que la rugosité de la surface du conducteur chauffant (1), d'une part, et la rugosité de la matière filtrante, d'autre part, sont de nature à empêcher la boucle de chauffage d'effectuer un mouvement vers l'extérieur, à la manière d'une immobilisation par engagement positif.
  8. Dispositif de filtration selon la revendication 1, caractérisé en ce que la matière filtrante et les boucles de chauffage sont reliées entre elles par engagement positif en chauffant le conducteur chauffant à la température de fusion de la céramique qui compose le corps filtrant.
EP93905339A 1992-03-21 1993-03-11 Dispositif de filtration pour eliminer les particules de suie des gaz d'echappement d'un moteur a combustion interne Expired - Lifetime EP0585432B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4209213A DE4209213A1 (de) 1992-03-21 1992-03-21 Filteranordnung zum entfernen von russpartikeln aus abgasen einer verbrennungskraftmaschine
DE4209213 1992-03-21
PCT/EP1993/000553 WO1993019288A1 (fr) 1992-03-21 1993-03-11 Dispositif de filtration pour eliminer les particules de suie des gaz d'echappement d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP0585432A1 EP0585432A1 (fr) 1994-03-09
EP0585432B1 true EP0585432B1 (fr) 1996-02-14

Family

ID=6454684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93905339A Expired - Lifetime EP0585432B1 (fr) 1992-03-21 1993-03-11 Dispositif de filtration pour eliminer les particules de suie des gaz d'echappement d'un moteur a combustion interne

Country Status (4)

Country Link
US (1) US5472462A (fr)
EP (1) EP0585432B1 (fr)
DE (2) DE4209213A1 (fr)
WO (1) WO1993019288A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5470364A (en) * 1992-01-07 1995-11-28 Pall Corporation Regenerable diesel exhaust filter
US5457945A (en) * 1992-01-07 1995-10-17 Pall Corporation Regenerable diesel exhaust filter and heater
US5766458A (en) * 1993-03-12 1998-06-16 Micropyretics Heaters International, Inc. Modulated and regenerative ceramic filter with insitu heating element
US6068010A (en) * 1995-06-09 2000-05-30 Marotta Scientific Controls, Inc. Microvalve and microthruster for satellites and methods of making and using the same
DE19938686A1 (de) 1999-08-14 2001-02-15 Volkswagen Ag Katalysator zur Reinigung eines Abgases einer Verbrennungskraftmaschine
US6540816B2 (en) 2001-08-23 2003-04-01 Fleetguard, Inc. Regenerable filter with localized and efficient heating
DE10300717A1 (de) * 2003-01-08 2004-07-22 E.G.O. Elektro-Gerätebau GmbH Halterung für einen dünnen Rohrheizkörper in einem Filter
AT6784U3 (de) * 2004-01-13 2004-09-27 Friedrich J Dipl Ing Zucker Abgasfilter
US7931715B2 (en) * 2007-02-12 2011-04-26 Gm Global Technology Operations, Inc. DPF heater attachment mechanisms
US7862635B2 (en) * 2007-02-12 2011-01-04 Gm Global Technology Operations, Inc. Shielded regeneration heating element for a particulate filter
US8763378B2 (en) * 2007-06-15 2014-07-01 GM Global Technology Operations LLC Electrically heated particulate filter embedded heater design
US20100095657A1 (en) * 2008-10-21 2010-04-22 Gm Global Technology Operations, Inc. Electrically heated diesel particulate filter (dpf)
US8584445B2 (en) * 2009-02-04 2013-11-19 GM Global Technology Operations LLC Method and system for controlling an electrically heated particulate filter
US8950177B2 (en) 2009-06-17 2015-02-10 GM Global Technology Operations LLC Detecting particulate matter load density within a particulate filter
US8341945B2 (en) * 2009-07-01 2013-01-01 GM Global Technology Operations LLC Electrically heated particulate filter
US8479496B2 (en) * 2009-07-02 2013-07-09 GM Global Technology Operations LLC Selective catalytic reduction system using electrically heated catalyst
US8443590B2 (en) * 2009-07-02 2013-05-21 GM Global Technology Operations LLC Reduced volume electrically heated particulate filter
US8475574B2 (en) * 2009-08-05 2013-07-02 GM Global Technology Operations LLC Electric heater and control system and method for electrically heated particulate filters
US8511069B2 (en) * 2009-08-12 2013-08-20 GM Global Technology Operations LLC Systems and methods for layered regeneration of a particulate matter filter
FR3065029B1 (fr) 2017-04-07 2019-06-21 Faurecia Systemes D'echappement Dispositif de purification de gaz d'echappement, procede de pilotage correspondant

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512786A (en) * 1982-04-21 1985-04-23 Mazda Motor Corporation Exhaust gas purifying device
JPS58199018A (ja) * 1982-05-18 1983-11-19 Nippon Denso Co Ltd 電気的加熱手段を有する排気ガス微粒子浄化装置
JPS5928010A (ja) * 1982-08-05 1984-02-14 Nippon Denso Co Ltd 排気ガス浄化用構造物
DE3608801A1 (de) * 1986-03-15 1987-09-17 Fev Forsch Energietech Verbr Verfahren und vorrichtung zur regeneration von partikelfiltersystemen
DE3712333A1 (de) * 1987-04-11 1988-10-20 Fev Motorentech Gmbh & Co Kg Regenerierbare filteranordnung zum entfernen von russpartikeln aus abgasen
DE3803100A1 (de) * 1988-02-03 1989-08-17 Gillet Heinrich Gmbh Verfahren und vorrichtung zum regenerieren von russfiltern
DE3830977A1 (de) * 1988-09-12 1990-03-15 Fev Motorentech Gmbh & Co Kg Filteranordnung zum entfernen von russpartikeln aus abgasen einer verbrennungskraftmaschine
US4975009A (en) * 1989-05-24 1990-12-04 Easton John T Bolt and wedge assembly for panel units
JPH04179818A (ja) * 1990-11-14 1992-06-26 Nippon Soken Inc 排気ガス微粒子浄化装置

Also Published As

Publication number Publication date
DE59301627D1 (de) 1996-03-28
DE4209213A1 (de) 1993-09-23
US5472462A (en) 1995-12-05
EP0585432A1 (fr) 1994-03-09
WO1993019288A1 (fr) 1993-09-30

Similar Documents

Publication Publication Date Title
EP0585432B1 (fr) Dispositif de filtration pour eliminer les particules de suie des gaz d'echappement d'un moteur a combustion interne
EP0286932B1 (fr) Dispositif de filtrage des particules de suie de l'échappement d'un moteur à combustion
EP0504719B1 (fr) Filtre pour gaz d'échappement et/ou convertisseur catalytique
DE69104317T2 (de) Filter zum Sammeln feiner Abgaspartikel.
DE69116644T2 (de) Regenerierbare Partikelfilteranlage zur Emissionskontrolle
DE112019001864T5 (de) Abgasleitung, Vorrichtung zur Abgasreinigung und Verfahren zur Herstellung der Reinigungsvorrichtung
DE60225902T2 (de) Partikelfilter zum reinigen der abgase von verbrennungsmotoren
EP0892887A1 (fr) Corps de filtre a trajets d'ecoulement resistant a la chaleur et pouvant etre regenere
DE102011109761A1 (de) Verfahren und Vorrichtung zur Abgasreinigung mit optionaler Wärmerückgewinnung für Verbrennungskraftmaschinen
WO1996009893A1 (fr) Elements alveolaires en forme de disque, en particulier supports de catalyseurs
DE102005009585A1 (de) Wabenkörper mit zerklüfteten Stirnseiten
EP1753520B1 (fr) Piece rapportee de nettoyage pour systemes de purification des gaz d'echappement, en particulier pour filtres a particules
WO2002040838A1 (fr) Corps a structure en nid d'abeilles segmente et pouvant etre parcouru de maniere radiale
DE602004002878T2 (de) Block zur filtration von in abgasen von einem verbrennungsmotor enthaltenen teilchen
DE102009031890A1 (de) Heizvorrichtung
EP0682742B1 (fr) Elements alveoles chauffables electriquement a resistance accrue par des rainures
EP0543075A1 (fr) Elément chauffant électrique pour un filtre à suie
WO2009135767A1 (fr) Corps en nid d’abeilles avec des points de liaison exécutés différemment
EP2069615B1 (fr) Élément filtrant destiné en particulier au filtrage des gaz d'échappement d'un moteur à combustion interne
DE102005055074A1 (de) Filtereinrichtung, insbesondere für ein Abgassystem einer Brennkraftmaschine
WO2001051780A1 (fr) Dispositif d'epuration des gaz d'echappement a isolation thermique
EP1002187A1 (fr) Systeme d'echappement de gaz
EP1225311A2 (fr) Dispositif de filtre, en particulier pour un filtre à particule de gaz d'échappement d'un moteur diesel
DE102022212261B3 (de) Vorrichtung zur Aufheizung eines Abgasstromes mit Toleranzausgleich
DE102020104276A1 (de) Fluidreinigungsvorrichtung, Verbrennungsmotor sowie Kraftfahrzeug

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: 19931110

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB SE

17Q First examination report despatched

Effective date: 19940927

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB SE

REF Corresponds to:

Ref document number: 59301627

Country of ref document: DE

Date of ref document: 19960328

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

Ref country code: SE

Effective date: 19960514

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

Effective date: 19960508

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

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

Ref country code: GB

Payment date: 20010220

Year of fee payment: 9

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

Ref country code: DE

Payment date: 20010307

Year of fee payment: 9

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

Ref country code: FR

Payment date: 20010319

Year of fee payment: 9

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

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

Effective date: 20020311

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

Ref country code: DE

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

Effective date: 20021001

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

Effective date: 20020311

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

Ref country code: FR

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

Effective date: 20021129

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST