EP0393729A2 - Regenerierbares Abgasfilter für Verbrennungsmotoren - Google Patents

Regenerierbares Abgasfilter für Verbrennungsmotoren Download PDF

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Publication number
EP0393729A2
EP0393729A2 EP90110810A EP90110810A EP0393729A2 EP 0393729 A2 EP0393729 A2 EP 0393729A2 EP 90110810 A EP90110810 A EP 90110810A EP 90110810 A EP90110810 A EP 90110810A EP 0393729 A2 EP0393729 A2 EP 0393729A2
Authority
EP
European Patent Office
Prior art keywords
cavities
filter
cells
walls
electrically
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
EP90110810A
Other languages
English (en)
French (fr)
Other versions
EP0393729A3 (en
EP0393729B1 (de
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
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 Iveco Fiat SpA filed Critical Iveco Fiat SpA
Publication of EP0393729A2 publication Critical patent/EP0393729A2/de
Publication of EP0393729A3 publication Critical patent/EP0393729A3/en
Application granted granted Critical
Publication of EP0393729B1 publication Critical patent/EP0393729B1/de
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 in 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 destruction due to exaggerated heatings.
  • filters For the double object of limiting the average temperature of the filter and reducing the electric power used, 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 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 in the exhaust gases of an internal-combustion engine comprising an outer casing provided with at least an inlet duct and at least an outlet duct, filtering means housed into said outer casing and including a set of pairs of cavities having walls made of porous material, each one of said cavities being provided with an open end and a closed end, one cavity of each pair being provided with its open end communicating with said inlet duct, the other cavity of each pair being provided with its open end communicating with said outlet duct, whereby said porous material is apt to intercept the residual combustion products of said gases, electric heating means associated with said pairs of cavities for raising the temperature of said products, and selectively and/or cyclically operable control means for electrically supplying said heating means, characterized by a plurality of elongated honey-comb cells of a prismatic shape, each one including at least one pair of said cavities, said porous material being electrically conductive, said plurality of cells being arranged in a retic
  • 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 meal, for instance of the ceramic type.
  • Each cell 4 having an elongated 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 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.
  • the operation of the filter is as follows.
  • the exhaust gases emitted by the engine are conveyed in a known 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 front walls 8, gases are constrained to pass through the walls 6, which intercept the residual combustion products, in order to go in the adjacent 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 build-up of residues in the walls 6 originates 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.
  • 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.
  • control exchange 16 disconnects 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.
  • the conductive portions 4 of the filtering members 3 are mutually 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, 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, which enables to exploit the most of the power supplied for the starting of the combustion, without great losses due to convection.
  • the ceramic filtering members 3 can have a good resistance to thermal shocks, since they are subdivided in a plurality of cells 4 having reduced dimensions and being mutually thermally insulated.
  • the fibers used are suitably subjected to pre-treatments 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 fiber used said treatments consist in the introduction or extraction of ions through diffusion in the material of the fiber.
  • 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 fibers or threads. This solution enables to reduce the effect of the thermal shocks, in that the thermal conductivity is increased.
  • a sliding element substantially arranged on a central plane of an inner chamber of the filter, in this case suitably formed with a quadrangular cross-section, and which can readily be introduced and extracted from the outer casing of the filter.
  • control switches 15 in response to signals received from the user and/or from process sensors (for instance temperature or pressure sensors) arranged inside or outside the filter; the electric current supplying the conductive portions 4 can be modulated according to the temperature levels established in the filter.
  • process sensors for instance temperature or pressure sensors
  • 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 metal-oxides, for instance CuO, Cu2O, MnO2, Mn3O4, PbO, CeO2 or the respective oxygenated salts, for instance Cu(NO3)2, CuSO4, and of 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.
EP90110810A 1986-12-05 1987-12-02 Regenerierbares Abgasfilter für Verbrennungsmotoren Expired - Lifetime EP0393729B1 (de)

Applications Claiming Priority (2)

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

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP87117828.1 Division 1987-12-02

Publications (3)

Publication Number Publication Date
EP0393729A2 true EP0393729A2 (de) 1990-10-24
EP0393729A3 EP0393729A3 (en) 1990-11-28
EP0393729B1 EP0393729B1 (de) 1992-10-07

Family

ID=11306291

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87117828A Expired - Lifetime EP0270990B1 (de) 1986-12-05 1987-12-02 Regenerierbares Abgasfilter für Verbrennungsmotoren
EP90110810A Expired - Lifetime EP0393729B1 (de) 1986-12-05 1987-12-02 Regenerierbares Abgasfilter für Verbrennungsmotoren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP87117828A Expired - Lifetime EP0270990B1 (de) 1986-12-05 1987-12-02 Regenerierbares Abgasfilter für Verbrennungsmotoren

Country Status (5)

Country Link
EP (2) EP0270990B1 (de)
JP (1) JP2610147B2 (de)
DE (2) DE3782176T2 (de)
ES (2) ES2023398B3 (de)
IT (1) IT1196822B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667798A1 (fr) * 1990-10-15 1992-04-17 Aerospatiale Filtre collecteur d'aerosols autochauffant pour pyrolyse.
EP0501733A1 (de) * 1991-02-25 1992-09-02 Ngk Insulators, Ltd. Abgasentgiftungsanlage
WO1993013303A1 (en) * 1991-12-20 1993-07-08 Per Stobbe A filter unit and a filter body for filtering exhaust gas from diesel engines
US5421847A (en) * 1993-03-12 1995-06-06 Ngk Insulators, Ltd. Dust collecting apparatus for high-temperature gas
FR2808839A1 (fr) * 2000-05-15 2001-11-16 Volkswagen Ag Filtre a particules et procede pour la regeneration d'un filtre a particules
EP3695895A1 (de) 2019-02-14 2020-08-19 Carl Freudenberg KG Filterelement mit wabenkörper zur luftreinigung

Families Citing this family (12)

* Cited by examiner, † Cited by third party
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
BR9106611A (pt) * 1990-07-02 1993-06-01 Carl M Fleck Processo e dispositivo para purificacao de gases de escapamento
JP3000750B2 (ja) * 1991-09-20 2000-01-17 株式会社デンソー 自己発熱型フィルタ
IT1261725B (it) * 1992-11-26 1996-05-30 Iveco Fiat Filtro rigenerabile per i gas di scarico di un motore a combustione interna.
DK29093D0 (da) * 1993-03-15 1993-03-15 Per Stobbe Heated silicon carbide filter
ATA256293A (de) * 1993-12-17 1998-10-15 Fleck Carl M Dr Elektrofilter zum abscheiden von russpartikeln aus den abgasen von brennkraftmaschinen
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
JPH09217618A (ja) * 1996-02-09 1997-08-19 Isuzu Ceramics Kenkyusho:Kk 排気ガス浄化装置
FR2755623B1 (fr) * 1996-11-12 1998-12-04 Inst Francais Du Petrole Procede et unite de filtration de gaz d'echappement, ayant un chauffage modulable
DE60236250D1 (de) * 2001-01-19 2010-06-17 Dullien Inc Abscheider aus porösem und faserförmigem filzartigem material
DE102018104140A1 (de) 2018-02-23 2019-08-29 Volkswagen Aktiengesellschaft Partikelfilter für einen Verbrennungsmotor sowie Verfahren zur Herstellung eines solchen Partikelfilters
DE102021213700A1 (de) 2021-12-02 2023-06-07 Mahle International Gmbh Filterelement insbesondere für eine Filtereinrichtung einer Frischluftanlage einer Brennkraftmaschine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276066A (en) * 1980-02-25 1981-06-30 General Motors Corporation Monolith diesel exhaust filter with self-regeneration
JPS58137423A (ja) * 1982-02-09 1983-08-15 Ngk Spark Plug Co Ltd 排ガス用フイルタ装置
US4427418A (en) * 1981-03-16 1984-01-24 Kabushiki Kaisha Toyota Chuo Kenkyusho Device for collecting particulates in exhaust gases
EP0112634A1 (de) * 1982-12-08 1984-07-04 General Motors Corporation Vorrichtung zur Halterung keramischer Monolithfilter im Partikelabscheidergehäuse
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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Publication number Priority date Publication date Assignee Title
US3937015A (en) * 1973-05-03 1976-02-10 Nippondenso Co., Ltd. Pleated filter in the exhaust manifold
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
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
US4455823A (en) * 1982-10-20 1984-06-26 General Motors Corporation Diesel exhaust particulate trap with pleated filter
GB8605058D0 (en) * 1986-02-28 1986-04-09 Porous Element Heating Ltd Removal of particulate material from gas

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4505107A (en) * 1981-10-26 1985-03-19 Nippondenso Co., Ltd. Exhaust gas cleaning apparatus
JPS58137423A (ja) * 1982-02-09 1983-08-15 Ngk Spark Plug Co Ltd 排ガス用フイルタ装置
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
EP0112634A1 (de) * 1982-12-08 1984-07-04 General Motors Corporation Vorrichtung zur Halterung keramischer Monolithfilter im Partikelabscheidergehäuse
US4503672A (en) * 1983-11-25 1985-03-12 General Motors Corporation Diesel exhaust cleaner with glow plug igniters and flow limiting valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 252 (C-194)() 09 November 1983, & JP-A-58 137423 (NIPPON TOKUSHU TOGYO) 15 August 1983, *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2667798A1 (fr) * 1990-10-15 1992-04-17 Aerospatiale Filtre collecteur d'aerosols autochauffant pour pyrolyse.
EP0481858A1 (de) * 1990-10-15 1992-04-22 AEROSPATIALE Société Nationale Industrielle Selbstheizender Aerosolfilter für Pyrolyse
EP0501733A1 (de) * 1991-02-25 1992-09-02 Ngk Insulators, Ltd. Abgasentgiftungsanlage
US5228892A (en) * 1991-02-25 1993-07-20 Ngk Insulators, Ltd. Exhaust emission control device
WO1993013303A1 (en) * 1991-12-20 1993-07-08 Per Stobbe A filter unit and a filter body for filtering exhaust gas from diesel engines
US5421847A (en) * 1993-03-12 1995-06-06 Ngk Insulators, Ltd. Dust collecting apparatus for high-temperature gas
FR2808839A1 (fr) * 2000-05-15 2001-11-16 Volkswagen Ag Filtre a particules et procede pour la regeneration d'un filtre a particules
DE10023787A1 (de) * 2000-05-15 2001-11-22 Volkswagen Ag Partikelfilter und Verfahren zur Regeneration eines Partikelfilters
EP3695895A1 (de) 2019-02-14 2020-08-19 Carl Freudenberg KG Filterelement mit wabenkörper zur luftreinigung
CN111558269A (zh) * 2019-02-14 2020-08-21 卡尔·弗罗伊登伯格公司 具有用于空气净化的蜂窝体的过滤元件
CN111558269B (zh) * 2019-02-14 2022-03-04 卡尔·弗罗伊登伯格公司 具有用于空气净化的蜂窝体的过滤元件

Also Published As

Publication number Publication date
JP2610147B2 (ja) 1997-05-14
DE3782176T2 (de) 1993-05-06
EP0393729A3 (en) 1990-11-28
EP0270990B1 (de) 1991-08-07
DE3782176D1 (de) 1992-11-12
IT1196822B (it) 1988-11-25
ES2023398B3 (es) 1992-01-16
EP0270990A1 (de) 1988-06-15
ES2035681T3 (es) 1993-04-16
EP0393729B1 (de) 1992-10-07
IT8667909A0 (it) 1986-12-05
JPS63197511A (ja) 1988-08-16
DE3772013D1 (de) 1991-09-12

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