EP0270990A1 - Filtre régénérable pour gaz d'échappement de moteurs à combustion interne - Google Patents

Filtre régénérable pour gaz d'échappement de moteurs à combustion interne Download PDF

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Publication number
EP0270990A1
EP0270990A1 EP87117828A EP87117828A EP0270990A1 EP 0270990 A1 EP0270990 A1 EP 0270990A1 EP 87117828 A EP87117828 A EP 87117828A EP 87117828 A EP87117828 A EP 87117828A EP 0270990 A1 EP0270990 A1 EP 0270990A1
Authority
EP
European Patent Office
Prior art keywords
filter
conductive
terized
charac
threads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87117828A
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German (de)
English (en)
Other versions
EP0270990B1 (fr
Inventor
Giovanni Manfre'
Angelo Giachello
Francesco Cuniberti
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.)
Iveco SpA
Original Assignee
Iveco Fiat SpA
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Filing date
Publication date
Application filed by Iveco Fiat SpA filed Critical Iveco Fiat SpA
Publication of EP0270990A1 publication Critical patent/EP0270990A1/fr
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Publication of EP0270990B1 publication Critical patent/EP0270990B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—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
    • F01N3/0217—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 the filtering elements having the form of hollow cylindrical bodies
    • 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
    • F01N3/0218—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 the filtering elements being made from spirally-wound filtering material
    • 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
    • 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
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/10—Fibrous material, e.g. mineral or metallic wool
    • 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
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/22—Selection of materials for exhaust purification used in non-catalytic purification apparatus

Definitions

  • This invention relates to a regenerable filter for the exhaust gases of an internal-combustion engine.
  • this invention relates to a filter suited to be placed into an exhaust pipe of an internal-combustion engine, comprising a filter­ing member suited to intercept the residual combustion products contained in the exhaust gases and further comprising means suited to produce the combustion of said residues.
  • Filters are known in which said means suited to produce the combustion of the residues are of the kind that uses a catalyst for the starting of the combustion at low temperatures, or of the kind that heats the exhaust gases, upstream of the filtering member, to the combustion temperature of said resi­dues.
  • a further drawback of the known heating fil­ters is the fact that the filter temperature can in­crease exceedingly, since the regeneration usually takes place upon rather wide surfaces and so in a scarcely controlled manner; as a result there is the possibility of serious damages or the destruction due to exaggerated heatings.
  • filters have been realized in which the filtering member is cyclically heated in relation with consecutive portions; the continuity of the filter­ing member nevertheless can allow the starting of wi­de and intense combustions. Furthermore, since in the known filters of this kind the heating of the consecutive portions of the filtering member is ob­tained through convection and radiation, the electric power overall supplied, is always substantially high­er than the equivalent of the thermal power actually needed to locally start the combustion of the resi­dues.
  • An object of the present invention is to rea­lize a regenerable filter for the exhaust gas­es of an internal-combustion engine, that lacks in the drawbacks connected with the above-mentioned and known filters, and is particularly simple, practical, and removes the risks of clogging or self-destruc­tion due to exaggerated heating.
  • a regenerable fil­ter for the exhaust gases of an internal-combustion engine of the kind comprising: an outer casing provided with at least an in­let duct and at least an outlet duct, suited to be placed in series with an exhaust pipe of said engi­ne; filtering means housed into said outer casing and suited to intercept the residual combustion pro­ducts contained in said exhaust gases; and heating means suited to bring the residual combustion products to a temperature sufficient to originate the combustion; characterized in that said filtering means comprise a plurality of portions at least partially realized from an electrically conductive material and forming said heating means; said portions being mutually insulated and electrically supplied in a selective and cyclic manner.
  • generraly by 1 a regenerable filter for an internal-combustion engine, in parti­cular of the compression-ignition type.
  • the filter 1 comprises a cylindric outer ca­sing 2, schematically shown in dotted line in figu­re 1, and a filtering member 3 housed into said ca­sing 2.
  • the filtering member 3 comprises a plurali­ty of honey-comb cells 4, suitably obtained from a porous and electrically conductive material, for in­stance of the ceramic type.
  • Each cell 4 having an elongate prismatic shape with square section, com­prises four side walls 5 and two inner division walls 6, mutually orthogonal and located along the middle planes of the cell 4, so as to define four square section cavities 7.
  • Cavities 7 are closed at one end by a front wall 8, and open at the opposite end; in particular, two diagonally opposed cavities 7 of each cell 4 are open at one end 9, the other two ca­vities of the same cell 4 being open at an opposite end 10.
  • each cell 4 is arranged into a corresponding seat 11 of a reticulated structure 12, realized in an electri­cally and thermally insulating material, defined by two orders of flat, parallel and equidistant walls 13 perpendicularly intersecting one another.
  • Cells 4 are connected at one end 9 by means of respective electric cables 14, to the positive po­le of the vehicle battery; said connection is subject to the action of interruption means 15, for instan­ce controlled diodes, controlled by a conventional control exchange 16.
  • the opposite ends 10 of cells 4 are connected to a metal plate 17 of the casing 2, which is provided with apertures 18 facing cor­responding apertures of the cells 4 themselves, and is in electric connection with a negative pole of the vehicle battery.
  • FIG 3 and 4 is designated by 21 a portion of a filtering member realized in electricallyly conductive fabric.
  • fabric 21 com­prises an intervening layer 2, forming the actual filtering member, suitably obtained from non-con­ducting ceramic fibers having a substantial heat­resistance.
  • a second fabric layer 24 is arranged, formed by bundles 25 of microthreads (afterwards named shortly "threads") in non-conductive ceramic fibre, arranged longitudinally, and by conductive threads 26 alter­nate with non-conductive threads 27 arranged tran­sversally.
  • Conductive threads 26 are suitably pro­duced from metallic materials (for instance stain­less steel, Ni-Cr or other alloys) or conductive ce­ramics (for instance SiC), resistant to high tempe­ratures, or ceramics plated with oxidation-resistant metals.
  • the fabric 21 further comprises a layer 28 having the role of simple support, applied on the op­posite surface 29 of the intervening layer 23.
  • Conductive threads 26 are connected adiacent an edge 30 of the fabric 21 to an electrode 31 form­ed by a plurality of metal foils 32 arranged perpen­dicularly to the threads 26 and in turn connected to a pole of the battery of the vehicle or directly to the alternator; the conductive threads 26 are con­nected in groups, at an opposite end, to another po­le of the vehicle battery, through a control device similar to that described with reference to figure 1.
  • Filter 35 comprises an outer casing formed by two coaxial tubular bodies 36, 37, de­fining an annular chamber 38 inbetween.
  • the fabric 21, the surface provided with the conductive layer 24 of which is shown in phantom, is arranged into the annular chamber 38 substantially according to a closed polygonal line, the corners of which, angularly e­quidistant, are alternately joined to the tubular bodies 36 and 37.
  • the fabric 21 forms with the tu­bular body 36 and with the tubular body 37, a plura­lity of spaces 39, 40, respectively communicating, in a not shown way, with an inlet aperture and with an outlet aperture of filter 35.
  • FIG 6 a second example of an embodi­ment of a filter 50 using the fabric 21 of the kind described is partially illustrated.
  • the fabric 21 is pleated and is fixed on a support layer 51 spiral wound into a not shown cylindric casing.
  • the fabric 21 forms with the support layer 44 a plurality of spaces 52, 53 respectively communicating, in a not shown way, with an inlet aperture and with an out­let aperture of filter 50.
  • FIG 7 a further embodiment of the con­ductive fabric is illustrated.
  • the fabric 43 is sub­divided in a plurality of portions 44, separated one another by insulating elements 45, formed for instance by strips of fabric from non conductive and oxidation resistant ceramic fibres.
  • Portions 44 are realized from non conductive fibres, into which conductive fibres 46 schematically shown in phantom and arrang­ed at random are incorporated.
  • the fabric 43 has at an edge a plurality of elctrodes 47, for instan­ce metal foils, insulated each other by the elements 45 and apt to be connected through a control devi­ce of the kind described to a pole of the vehicle battery; fabric 43 further has, at an opposite edge, a further electrode 48 connecting portions 45 to the other pole of the battery.
  • the operation of the filter is as follows.
  • the exhaust gases emitted by the engine are conveyed in a know manner into the casing 2 of the filter 1 and enter in the cavities 7 open on the si­de of the end 9. Since these cavities are closed at the opposite end by the fron walls 8, gases are constrained to pass through the walls 6, which in­tercept the residual combustion products, in order to go in the adiacent cavities 7 which are open on the side of the end 10 and allow the discharge of gases from filter 1 through the apertures 18 of the plate 17.
  • the buil-up of residues in the walls 6 o­ riginates a gradual clogging of the filter, creat­ing a back-pressure in the engine exhaust.
  • the con­trol exchange 16 as a result of a signal received, for instance, from a pressure sensor detecting the pressure difference of the exhaust gas between inlet and outlet from the filter 1, causes the closing of one of the switches 15. Consequently one of the cells 4 is electrically supplied through the circuit formed by the respective cable 14, the cell 4 and the plate 17.
  • the flow of electric current through the walls 5 and 6 of the cell 4 gives rise to a heat­ing by Joule effect of the walls till the combustion temperature of the residues is attained, which are oxidized and gassified freeing the porosity of the cell.
  • the control exchange 16 discon­nects the the supply to the cell 4 and supplies the subsequent cell 4. All the cells are supplied in se­quence, according to an order and for a time pre­determined or governed from time to time by the con­trol exchange 16.
  • the exchange 16 can control the intensity of current and the heating ti­me of each cell 4 as a function of the revolutions of the engine and of the rate of flow of the air passing through the filter 1 by the action of an ap­propriate device, for instance a fan or a positive-­ displacement pump.
  • filter 35 The operation of filter 35 is similar; in this case, the filtering and heating function is as­signed to the fabric 21.
  • the exhaust gases (fig. 5) enter the filter 35 through an inlet aperture, not illustrated, and enter the spaces 39 included bet­ween the outer tubular body 36 and the fabric 21.
  • the gases pass then through the fabric 21, which in­tercepts the residual combustion products, and enter the spaces 40 included between said fabric 21 and the inner tubular body 37, from which they exit through a not shown outlet aperture.
  • the exhaust gases enter through an inlet aperture, not illustrated, and enter the spaces 52; they pass then through the fabric 21, that intercepts the residual combustion products, and enter the spaces 53 from which they exit through a not shown outlet aperture.
  • the conductive threads 26 of the fabric 21 can be supplied by groups according to a predetermin­ed program, so as to assure in use the combustion of the residues accumulated in a well defined portion of the fabric 21; while this portion is regenerated, the residues build-up in other portions of the fa­bric 21, which will be regenerated in sequence. At the end of the regeneration of the last portion, the cycle starts again with the regeneration of the first regenerated portion, which in the meantime will have intercepted new residues.
  • the "meshes" of the conductive layer 24 are suitably wide enough to allow the passage of the residues, that are intercepted, as schematically illustrated in fi­gure 4, by the filtering layer 22.
  • the concentration of the residues results substantially distributed around the conductors 26, which provide for the heat­ing by direct conduction of those residues.
  • the conduction between the opposite electrodes 47, 48 is assigned not to conductors having a definite geo­metry, such as the cells 4 or the threads 26, but to conductive fibres 46 irregularly scattered in por­tions 44 mutually insulated of non-conductive fa­bric.
  • the conductive portions (4; 26; 44) of the filtering members (3; 21; 43) are mutuallyly insulated. This enables to obtain a selective and cyclic heating of the portions, with the advantage of reducing the electric power used and keeping under con­trol the temperature of the filtering elements (3; 21; 43), without any risk of clogging or of destruc­tion due to over-heating. Further, the heating of the residues takes place through conduction, that is through direct contact between the residues themselves and the conductive portions (4; 26; 44), which ena­bles to exploit the most of the power supplied for the starting of the combustion, without great losses due to convection.
  • the filtering fabric ele­ments (21; 43), thanks to their deformability, are particularly resistant to thermal shocks produced due to the sudden temperature variations during the heat­ing and the cooling of the conductive portions (26; 44).
  • the ceramic filtering members 3 as well can ha­ve a good resistence to thermal shocks, since they a­re subdivided in a plurality of cells 4 having re­duced dimensions and being mutually thermally insu­lated.
  • the fibres used are sui­tably subjected to pre-tratments apt to avoid the embrittlement and/or the possible breakage due to phase transformation or anyway to other phenomena pro­duced by thermal shocks.
  • the pre-treatments can be of chemical and/or physical nature, and depending on the type of fibre used said treatments consist in the introduction or extraction of ions through diffusion in the matter of the fibre.
  • said insulat­ing portions (45) can also be omitted, since the pre­ferential orientation of the conductive fibres 46 establishes paths having a relatively reduced resi­stance in the traverse direction to the electrodes 47, 48, while the resistance increases indefinitely moving away from said paths; therefore, supplying only one electrode 47, the electric conduction, and so the heating, is obtained substantially in the por­tion 44 facing said electrode 47, while the surround­ing portions behave substantially as insulators.
  • the filtering member can be produced with a combination of ceramic fabrics, felts or boards.
  • the filtering member can comprise a series of stratified felt members; in particular, the single layers of the filtering member can be provided with pores having a geometric distribution, different di­mensions and shapes, and arranged according to a po­rosity gradient.
  • the electrification of the various elements can be carried out introducing in such ele­ments electrically conductive fibres or threads. This solution enables to reduce the effect of the thermal shocks, in that the thermal conductivity is increas­ed.
  • Means for the introduction of air into the filter can be provided, in order to assure a suffi­cient partial pressure of oxygen in the exhaust gases and so a complete combustion of the residues.
  • At last catalysing additives can be provided suited to aid and optimize the combustion of the so­lid unburned particles.
  • said additives can suitably comprise a mixture of one or more metal­oxides, for instance CuO, Cu2O, MnO2, Mn3O4, PbO, CeO2 or the respective oxygenated salts, for instan­ce Cu(NO3)2, CuSO4, and of the one or more chlorides of an alkaline or alkaline-earth metal for instance NaCl, KCl, LiCl, CuCl, CuCl2, MgCl2, BaCl2, possibly also in the hydrated form; preferably said mixture comprises CuO and NaCl.
  • Said mixture can be in a solid form (pow­der) or in the form of a solution in water or other sol­vent, and is deposited on the filtering member in the more convenient manner, such as insufflation, spraying or immersion.

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)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP87117828A 1986-12-05 1987-12-02 Filtre régénérable pour gaz d'échappement de moteurs à combustion interne Expired - Lifetime EP0270990B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT67909/86A IT1196822B (it) 1986-12-05 1986-12-05 Filtro autorigenerante per i gas di scarico di un motore a combustione interna
IT6790986 1986-12-05

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP90110810.0 Division-Into 1987-12-02

Publications (2)

Publication Number Publication Date
EP0270990A1 true EP0270990A1 (fr) 1988-06-15
EP0270990B1 EP0270990B1 (fr) 1991-08-07

Family

ID=11306291

Family Applications (2)

Application Number Title Priority Date Filing Date
EP90110810A Expired - Lifetime EP0393729B1 (fr) 1986-12-05 1987-12-02 Filtre régénérable pour gaz d'échappement de moteurs à combustion interne
EP87117828A Expired - Lifetime EP0270990B1 (fr) 1986-12-05 1987-12-02 Filtre régénérable pour gaz d'échappement de moteurs à combustion interne

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP90110810A Expired - Lifetime EP0393729B1 (fr) 1986-12-05 1987-12-02 Filtre régénérable pour gaz d'échappement de moteurs à combustion interne

Country Status (5)

Country Link
EP (2) EP0393729B1 (fr)
JP (1) JP2610147B2 (fr)
DE (2) DE3772013D1 (fr)
ES (2) ES2023398B3 (fr)
IT (1) IT1196822B (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993013303A1 (fr) * 1991-12-20 1993-07-08 Per Stobbe Ensemble filtre et corps de filtre destines a filtrer les gaz d'echappement de moteurs diesel
EP0599323A1 (fr) * 1992-11-26 1994-06-01 IVECO FIAT S.p.A. Filtre régénérable pour les gaz d'échappement d'un moteur à combustion interne
WO1994021900A1 (fr) * 1993-03-15 1994-09-29 Per Stobbe Filtre de gaz de combustion comprenant un element chauffant place dans l'interstice axial entre deux segments de filtre
US5402639A (en) * 1990-07-02 1995-04-04 Fleck; Carl M. Device for cleaning exhaust gases
US5405422A (en) * 1991-09-20 1995-04-11 Nippondenso Co., Ltd. Self-heating filter
EP0658685A2 (fr) * 1993-12-17 1995-06-21 Fleck, Carl Maria, Prof. Dr. Dispositif pour séparer de particules de suie contenues dans le gaz d'échappement d'un moteur à combustion interne
EP0789135A1 (fr) * 1996-02-09 1997-08-13 Isuzu Ceramics Research Institute Co., Ltd. Purificateur de gaz d'échappement
EP0841475A1 (fr) * 1996-11-12 1998-05-13 Institut Francais Du Petrole Procédé et unité de filtration de gaz d'échappement ayant un chauffage modulable
AT405435B (de) * 1988-11-30 1999-08-25 Fleck Carl M Dr Verfahren zur abscheidung und verbrennung von russpartikeln aus dieselabgasen und dieselabgasfilter zur durchführung des verfahrens
CN110185519A (zh) * 2018-02-23 2019-08-30 大众汽车有限公司 燃烧发动机的颗粒过滤器及制造这样的颗粒过滤器的方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667798B1 (fr) * 1990-10-15 1993-06-11 Aerospatiale Filtre collecteur d'aerosols autochauffant pour pyrolyse.
JPH0661416B2 (ja) * 1991-02-25 1994-08-17 日本碍子株式会社 排ガス処理装置
JP2718615B2 (ja) * 1993-03-12 1998-02-25 日本碍子株式会社 高温ガス用集塵装置
JP3885973B2 (ja) * 1995-03-20 2007-02-28 フランシス エー． エル． ジュリアン、 流体の流れに含まれる粒子の除去法とその装置
DE10023787A1 (de) * 2000-05-15 2001-11-22 Volkswagen Ag Partikelfilter und Verfahren zur Regeneration eines Partikelfilters
CA2651909C (fr) * 2001-01-19 2011-01-04 Institut Francais Du Petrole Separateur en matiere poreuse destine a traiter des effluents gazeux
EP3695895B1 (fr) * 2019-02-14 2021-12-22 Carl Freudenberg KG Élément filtrant pourvu de corps en nid d'abeilles destiné à l'épuration d'air
DE102021213700A1 (de) 2021-12-02 2023-06-07 Mahle International Gmbh Filterelement insbesondere für eine Filtereinrichtung einer Frischluftanlage einer Brennkraftmaschine

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US3937015A (en) * 1973-05-03 1976-02-10 Nippondenso Co., Ltd. Pleated filter in the exhaust manifold
US4276066A (en) * 1980-02-25 1981-06-30 General Motors Corporation Monolith diesel exhaust filter with self-regeneration
US4427418A (en) * 1981-03-16 1984-01-24 Kabushiki Kaisha Toyota Chuo Kenkyusho Device for collecting particulates in exhaust gases
US4455823A (en) * 1982-10-20 1984-06-26 General Motors Corporation Diesel exhaust particulate trap with pleated filter
US4503672A (en) * 1983-11-25 1985-03-12 General Motors Corporation Diesel exhaust cleaner with glow plug igniters and flow limiting valve
US4505107A (en) * 1981-10-26 1985-03-19 Nippondenso Co., Ltd. Exhaust gas cleaning apparatus
US4505726A (en) * 1982-05-18 1985-03-19 Nippondenso Co., Ltd. Exhaust gas cleaning device
US4516993A (en) * 1982-06-01 1985-05-14 Nippondenso Co., Ltd. Carbon particulates cleaning device

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DE2951316A1 (de) * 1979-12-20 1981-07-02 Degussa Ag, 6000 Frankfurt Katalytisches filter fuer die dieselabgasreinigung
JPS58119317A (ja) * 1981-12-29 1983-07-15 Ngk Spark Plug Co Ltd 可燃性微粒子除去用フイルタ装置
JPS58137423A (ja) * 1982-02-09 1983-08-15 Ngk Spark Plug Co Ltd 排ガス用フイルタ装置
JPS58143817A (ja) * 1982-02-19 1983-08-26 Ngk Spark Plug Co Ltd 可燃性微粒子除去用フイルタ装置
JPS58174216A (ja) * 1982-04-03 1983-10-13 Ngk Spark Plug Co Ltd 可燃性微粒子除去用フイルタ
US4462812A (en) * 1982-12-08 1984-07-31 General Motors Corporation Ceramic monolith particulate trap including filter support
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US3937015A (en) * 1973-05-03 1976-02-10 Nippondenso Co., Ltd. Pleated filter in the exhaust manifold
US4276066A (en) * 1980-02-25 1981-06-30 General Motors Corporation Monolith diesel exhaust filter with self-regeneration
US4427418A (en) * 1981-03-16 1984-01-24 Kabushiki Kaisha Toyota Chuo Kenkyusho Device for collecting particulates in exhaust gases
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US4505726A (en) * 1982-05-18 1985-03-19 Nippondenso Co., Ltd. Exhaust gas cleaning device
US4516993A (en) * 1982-06-01 1985-05-14 Nippondenso Co., Ltd. Carbon particulates cleaning device
US4455823A (en) * 1982-10-20 1984-06-26 General Motors Corporation Diesel exhaust particulate trap with pleated filter
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Cited By (16)

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Publication number Priority date Publication date Assignee Title
AT405435B (de) * 1988-11-30 1999-08-25 Fleck Carl M Dr Verfahren zur abscheidung und verbrennung von russpartikeln aus dieselabgasen und dieselabgasfilter zur durchführung des verfahrens
US5402639A (en) * 1990-07-02 1995-04-04 Fleck; Carl M. Device for cleaning exhaust gases
US5405422A (en) * 1991-09-20 1995-04-11 Nippondenso Co., Ltd. Self-heating filter
WO1993013303A1 (fr) * 1991-12-20 1993-07-08 Per Stobbe Ensemble filtre et corps de filtre destines a filtrer les gaz d'echappement de moteurs diesel
EP0599323A1 (fr) * 1992-11-26 1994-06-01 IVECO FIAT S.p.A. Filtre régénérable pour les gaz d'échappement d'un moteur à combustion interne
WO1994021900A1 (fr) * 1993-03-15 1994-09-29 Per Stobbe Filtre de gaz de combustion comprenant un element chauffant place dans l'interstice axial entre deux segments de filtre
EP0658685A2 (fr) * 1993-12-17 1995-06-21 Fleck, Carl Maria, Prof. Dr. Dispositif pour séparer de particules de suie contenues dans le gaz d'échappement d'un moteur à combustion interne
EP0658685A3 (fr) * 1993-12-17 1995-12-20 Fleck Carl M Dispositif pour séparer de particules de suie contenues dans le gaz d'échappement d'un moteur à combustion interne.
US5820833A (en) * 1996-02-09 1998-10-13 Isuzu Ceramics Institute Co., Ltd. Exhaust gas purifier
EP0789135A1 (fr) * 1996-02-09 1997-08-13 Isuzu Ceramics Research Institute Co., Ltd. Purificateur de gaz d'échappement
EP0841475A1 (fr) * 1996-11-12 1998-05-13 Institut Francais Du Petrole Procédé et unité de filtration de gaz d'échappement ayant un chauffage modulable
FR2755623A1 (fr) * 1996-11-12 1998-05-15 Inst Francais Du Petrole Procede et unite de filtration de gaz d'echappement, ayant un chauffage modulable
US6090172A (en) * 1996-11-12 2000-07-18 Institut Francias Du Petrole Exhaust gas filtering process and unit with modulable heating
CN110185519A (zh) * 2018-02-23 2019-08-30 大众汽车有限公司 燃烧发动机的颗粒过滤器及制造这样的颗粒过滤器的方法
US10918987B2 (en) 2018-02-23 2021-02-16 Volkswagen Aktiengesellschaft Particulate filter for an internal combustion engine and method for producing such a particulate filter
CN110185519B (zh) * 2018-02-23 2022-03-22 大众汽车有限公司 燃烧发动机的颗粒过滤器及制造这样的颗粒过滤器的方法

Also Published As

Publication number Publication date
EP0393729A3 (en) 1990-11-28
IT1196822B (it) 1988-11-25
ES2023398B3 (es) 1992-01-16
EP0270990B1 (fr) 1991-08-07
DE3782176D1 (de) 1992-11-12
EP0393729B1 (fr) 1992-10-07
JP2610147B2 (ja) 1997-05-14
DE3772013D1 (de) 1991-09-12
JPS63197511A (ja) 1988-08-16
EP0393729A2 (fr) 1990-10-24
ES2035681T3 (es) 1993-04-16
IT8667909A0 (it) 1986-12-05
DE3782176T2 (de) 1993-05-06

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