EP0233860A2 - Dispositif d'épuration de gaz d'échappement - Google Patents

Dispositif d'épuration de gaz d'échappement Download PDF

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Publication number
EP0233860A2
EP0233860A2 EP87890031A EP87890031A EP0233860A2 EP 0233860 A2 EP0233860 A2 EP 0233860A2 EP 87890031 A EP87890031 A EP 87890031A EP 87890031 A EP87890031 A EP 87890031A EP 0233860 A2 EP0233860 A2 EP 0233860A2
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EP
European Patent Office
Prior art keywords
filter body
exhaust gas
retaining
burn
particular filter
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
EP87890031A
Other languages
German (de)
English (en)
Other versions
EP0233860A3 (en
EP0233860B1 (fr
Inventor
Oskar Dr. Dipl.-Ing Pacher
Johann Dipl.-Ing Stamberger
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.)
Boehler GmbH
Original Assignee
Vereinigte Edelstahlwerke AG
Boehler GmbH
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 Vereinigte Edelstahlwerke AG, Boehler GmbH filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0233860A2 publication Critical patent/EP0233860A2/fr
Publication of EP0233860A3 publication Critical patent/EP0233860A3/de
Application granted granted Critical
Publication of EP0233860B1 publication Critical patent/EP0233860B1/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
    • F01N3/023—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
    • F01N3/023—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
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • 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
    • F01N2390/00—Arrangements for controlling or regulating exhaust apparatus
    • F01N2390/02—Arrangements for controlling or regulating exhaust apparatus using electric components only

Definitions

  • the invention relates to a device for the purification of the exhaust gases of internal combustion engines operated with a substantial excess of oxygen, preferably diesel engines, in particular vehicles, with at least one retention device arranged in an exhaust gas guide that can be brought into contact with at least a subset of the exhaust gases, in particular through which the exhaust gases flow Filter element, for finely divided condensates, such as soot in particular, and at least one device, which can preferably be put into operation in batches, for a burn-off of the Konoensate retained by the retaining element.
  • filters based on cordierite E.g. the composition and properties of such filters with honeycomb structure are described in DE-PS 26 31 875.
  • These ceramic filters are elongated prismatic and have a large number of channels running side by side, the partition walls of which are gas-permeable, fine-porous and each sealed at the ends with a ceramic stopper.
  • the exhaust gases flowing into the ducts that are open on the engine side are forced to make their way through the porous walls into the adjacent ducts that are closed on the engine side and open to the exhaust system. Soot and condensate particles are deposited on the walls of the channels, which can achieve soot separation of over 90%.
  • the filter In order to prevent an excessive increase in the exhaust gas counterpressure when the filter is loaded more heavily, the filter must be regenerated at intervals, usually by burning off the soot, by ensuring that the temperature is sufficiently high to trigger the burnup.
  • the burning for which the existing exhaust gas in excess oxygen is used, is hampered by the relatively nied- ri g en temperatures of the exhaust gases of diesel engines.
  • the necessary temperatures can be increased, for example Exhaust temperature can be reached by driving for longer periods in the full load range, they are around 600 - 900 ° C for uncoated ceramic bodies.
  • a reduction in the temperature required for soot combustion can be achieved with catalytic coatings on the filters or catalytically active fuel additives.
  • the aim of the invention is to provide a device of the type mentioned at the outset which requires low specific energy outputs when initiating and maintaining regeneration of the condensate filter, the latter being carried out in the shortest possible time.
  • the invention relates to an exhaust gas cleaning device.
  • do g oer type mentioned at the outset which essentially consists in the retention, in particular filter element, of at least one heat-resistant retention provided with catalyst material, preferably based on the metals of the platinum group, optionally additionally with Mo, W, Co and / or V.
  • the new device has the advantage that in every load range and with little effort with a problem-free switching process, preferably powered by the vehicle battery - if desired - regeneration of the filter by soot burn-up can be initiated at relatively short intervals, which increases the occurrence Back pressures in the exhaust system due to higher loading of the filter with soot can be avoided.
  • the device can be accommodated, for example, in the front silencer housing or in another, advantageously close extension of the exhaust pipe to the engine.
  • oxidation catalysts such as based on V 2 O 5 or those with a spinel structure, can be arranged on the filter body.
  • the intimate contact of the burn-off initiation member or its surface with the material of the catalytically coated filter body is achieved through the direct, preferably flat contact, a high number of contact points being achieved, thereby ensuring targeted, avoiding energy losses and immediate start of the soot burn-up front simultaneously at many centers, where the filter body and the initiator are in close contact, as a result reached uninhibited heat transfer and the erosion front .. is initiated on a broad basis and then traverses the filter body.
  • the erosion initiation member has catalyst material, in particular on the basis, on its surface adjacent to the filter body the metals of the platinum group, is preferably provided with a heat-resistant sheath, which is arranged directly adjacent to or in the retaining, in particular filter body, and is provided with a catalyst on the outside and in which at least one resistance heating conductor is arranged.
  • the shell of the erosion initiation member is formed by a part of the retaining body itself, that is to say it is formed integrally therewith.
  • the heating conductor can be arranged directly in one or more of the longitudinal honeycombs of a ceramic honeycomb filter. If the erosion initiation member, which advantageously has an elongated shape, is arranged to extend into the interior of the retaining body, in particular the filter body, the greatest possible contact area between the initiation member and the filter body is provided, as a result of which the exhaust gas front has a particularly large starting area.
  • the combustion initiation member is arranged to extend essentially from the exhaust gas upstream end of the retaining body, in particular the filter body, essentially in the main direction of the flow of exhaust gas, the radial component of the propagation of the soot combustion front is reinforced, thereby ensuring can be that the filter body is regenerated more uniformly over its cross section.
  • a plurality of erosion initiation members can also be arranged in the main exhaust gas flow direction over the filter body cross section.
  • At least one further heating cartridge with the same orientation can be arranged behind it, according to a further variant, an elongated combustion initiation element can almost or completely penetrate the filter body in the main direction of the flow of exhaust gas.
  • combustion initiation element preferably in the interior of the upstream exhaust gas area of the retention, in particular filter body, is arranged to extend essentially transversely to the main exhaust gas flow direction net is easier accessibility, especially given cartridge-like training.
  • the new device has been found, when the case retention, in particular filter body, essentially the entire cross section of the exhaust guide 'engaging with to heat and preferably to carbon and / or oxygen resistant three-dimensional, with metallic filaments, wire, ribbon or the like.
  • the filaments, ribbons, wires at least partially an intermediate coating with at least one layer applied from the gas phase of at least one carbide and / or nitride and / or oxide , and optionally borides, preferably an oxycarbonitride, have at least one of the elements from the group Ti, Zr, V, Ta, Nb, Mo, W, Al, Si, over which coating the catalyst material is arranged.
  • the applied by vapor deposition to the metallic carrier body frame intermediate layer of said hard materials, whereby their thickness / um is usually less than 10, can be, as it turned out, caking of the metallic filter body skeleton due to local overheating during the soot-burning avoided.
  • the intermediate coating brings about a synergistic increase in the action of the catalyst on the filter body, as a result of which the burn-off temperature is reduced and the soot burn-off is accelerated. This effect is probably due to the fact that the intermediate layer brings about an advantageous change in the microstructure of the catalyst layer arranged on it.
  • the sheath of the erosion initiation organ which extends into the interior of the retaining body, in particular the filter body, is formed with heat-resistant metal, in particular steel, the outer surface of which, at least in part, comprises an intermediate coating with at least one the gas phase applied intermediate coating of at least one carbide, nitride and / or oxide, and optionally borides, preferably an oxycarbonitride, of at least one element from the group comprising Ti, Zr, Hf, V, Nb, Ta, Mn, W, Al and Si which coating the catalyst material is arranged.
  • jumping the burn-off front into the filter body is further facilitated by adapting the properties of the microstructure of the catalytic coating to those of the filter body.
  • At least one layer of the intermediate coating of the support of the retaining body, in particular filter body, formed by wire or band elements, in particular steel, and / or erosion Initiation organ, in particular from its shell, preferably grown epitaxially on the substrate, is essentially crystalline. This form of training improves the starting of the soot combustion, as has been shown.
  • the burn-off initiator is automatically switched on at adjustable regular intervals, so that the soot burn-off is carried out regardless of the particular loading of the filter.
  • the retaining body in particular the filter body, has at least one temperature sensor in its exhaust gas downstream region, which is operatively connected to a switching element of the power supply of the erosion initiation element via a control element that can be set by temperature thresholds.
  • a particularly economical use of the energy required to initiate and maintain the erosion is particularly guaranteed if the initiation element is actually switched on depending on whether the filter body is covered with soot and condensate beyond a certain threshold value, which is reflected in the pressure in the Exhaust system manifested in front of the filter body.
  • a pressure sensor to be arranged in the exhaust gas duct upstream of the retaining element, in particular the filter element, and the power supply via a control element which can be set using pressure thresholds and a switching element tion of the burn-off initiation organ is operatively connected.
  • the pressure sensor can work, for example, on a piezo basis.
  • an upper and a lower pressure threshold value can be input to the control element, so that when the upper predetermined exhaust gas counterpressure is exceeded, the combustion is started by switching on the power supply and, if the counterpressure lower limit is undershot after the filter has been exposed, the heating element is switched off.
  • the filter body 20 of the particle retention or filter element 2 which is formed, for example, by a wound steel fleece material with catalyst-coated metal filaments 23 with interstitials 24 or a catalytic coated honeycomb filter.
  • the switch 55 located in line 52 is connected to a control element 78 which can be set to the desired temperature (t) or pressure (p) threshold values, the pressure threshold part p of the control element 78 being connected via an active line 71 to a pressure sensor 7, For example, on a piezo-crystal base, which is arranged upstream of the exhaust body of the filter body 20.
  • the temperature threshold part is a t Wirkleitun g 81 having an end portion located in the abgasstromabissertigen 22 of the filter body 20 temperature sensor 8 located connected.
  • the pressure sensor 7 via line 71 by means of control or g ans78 via the switch 55 switches the current flow through the heating conductor 50 the heating cartridge 5 is switched on, the casing 53 is heated and the catalytic coating, on which the soot has also deposited, causes the burning front which occurs there to jump into the filter body 20. Walking through the burn-up front takes place within a few minutes.
  • the heating cartridge 5, which is to be switched off immediately after regeneration has taken place, can be switched off automatically by the control element being adjustable to a lower threshold value of the exhaust gas counterflow.
  • the control element 78 switches off the power supply to the cartridge 5.
  • the switch-off can take place in another way, by the temperature sensor at the point in time when the exothermic combustion front has reached the end region 22 of the filter body 20 8 a temperature threshold value is exceeded and the control element 78 interrupts the power supply to the initiation element 5 by actuating the switch 55.
  • the drawing schematically indicates how a second heating cartridge 5 "protrudes from the exhaust gas downstream end in the same position, based on the cross section of the filter body 2, in the filter body 2, with which, for example, the regeneration dies before reaching the downstream end of the filter body
  • a broken line also indicates how a heating cartridge 5 'can also protrude radially into the upstream exhaust gas region 21 of the filter body 20 and can be arranged in contact with the filter body 20.
  • a spirally rolled filter body made of steel wire fleece with a catalyst coating with platinum was arranged with a specific surface area of 0.40 m 2 / g, which about 20 cm in diameter and 35 cm in length.
  • An electrical heating cartridge of 3 cm in diameter and 30 cm in length was built into the filter body from the exhaust gas inflow side, projecting centrally and axially and in contact with it, which was fed by an accumulator supplied by the motor.
  • the maximum power consumption of the heating cartridge at 12 V was 1 kW.
  • thermocouple was placed 3 cm from the side of the filter, which was connected to an automatic recorder.
  • the diesel engine was operated at 25, 50 and 75% of the full load and the exhaust gas back pressure was measured with a pressure transmitter arranged in front of the filter; If this exceeded 0.3 bar, the heating cartridge was switched on and the time between the start-up of the heating cartridge and the temperature increase indicated by the thermocouple was determined. The heating cartridge was switched on at 2 minutes. For the three specified engine loads, average times of 8.6, 6.4 and 5.2 minutes of passage of the burn-up front through the filter body from the switching on of the heating cartridge were determined from three test series.
  • the steel casing of which, according to the particularly preferred embodiment according to the invention, was coated on the outside with the same platinum-based catalyst as the steel wool filter body the otherwise specified test conditions allowed the time stated between switching on the heating cartridge and ending the migration of the regeneration front through the filter body to 7.2, 5.8 and 4.5 minutes.
  • Example 2 Analogously to Example 1, a filter made of ceramic foam and coated with Pt and Pd was used.
  • An electrical immersion heater with a diameter of 30 mm, a length of 120 mm and a power consumption of 1 kW (at 12 V) was inserted axially into the filter body and penetrating it.
  • the heating cartridge was provided with a 2 ⁇ m thick crystalline coating made of TiN with low levels of carbon and oxygen. On this coating was in the finest form by ther Mix decomposition deposited a well-adhering catalytically effective coating of Pt and Pd.
  • an exhaust gas purification device was tested on a test stand, which was installed in the exhaust pipe of a two-liter passenger car diesel engine instead of the front silencer.
  • a ceramic honeycomb filter body coated with Pt and Pd which had a diameter of about 20 cm and a length of 35 cm, was used with two heating cartridges with a diameter of 15 cm and length 15 cm, also catalytically coated with Pt and Pd, which were arranged axially one behind the other in the middle.
  • the maximum power consumption of the heating cartridge was 1.1 kW.
  • the diesel engine was operated at 75% of the full load, and the exhaust gas back pressure was measured with a pressure transmitter located in front of the filter. At the start of the test, this was 115 mbar. If the back pressure exceeded 300 mbar, the heating cartridges were switched on and the time between starting up the heating cartridge and falling below the back pressure of 200 mbar indicated by the pressure transmitter certainly. The average time required for regeneration was 5.2 min.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Catalysts (AREA)
EP87890031A 1986-02-19 1987-02-18 Dispositif d'épuration de gaz d'échappement Expired - Lifetime EP0233860B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT43086 1986-02-19
AT430/86 1986-02-19

Publications (3)

Publication Number Publication Date
EP0233860A2 true EP0233860A2 (fr) 1987-08-26
EP0233860A3 EP0233860A3 (en) 1987-10-14
EP0233860B1 EP0233860B1 (fr) 1991-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890031A Expired - Lifetime EP0233860B1 (fr) 1986-02-19 1987-02-18 Dispositif d'épuration de gaz d'échappement

Country Status (3)

Country Link
EP (1) EP0233860B1 (fr)
AT (1) ATE63611T1 (fr)
DE (1) DE3770016D1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316637B1 (fr) * 1987-11-13 1990-11-28 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Boîtier pour dispositif d'épuration des gaz d'échappement
US5146743A (en) * 1988-04-25 1992-09-15 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for accelerating the response of an exhaust gas catalyst, and apparatus and electrically heatable carrier bodies for performing the method
WO1993007364A1 (fr) * 1991-09-28 1993-04-15 Emitec Gesellschaft Für Emissionstechnologie Mbh Pot catalytique
US5839273A (en) * 1993-11-30 1998-11-24 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Method for reducing pollutant emissions of a diesel engine with a downstream oxidation-type catalytic converter
EP1113154A2 (fr) * 1999-12-30 2001-07-04 Faurecia Abgastechnik GmbH Filtre à suie pour véhicules diesel
FR2816002A1 (fr) * 2000-10-31 2002-05-03 Saint Gobain Ct Recherches Filtres a particules pour la purification des gaz d'echappement des moteurs a combustion interne comportant des allumeurs ceramiques
DE10105233A1 (de) * 2001-02-02 2002-08-29 Zeuna Staerker Kg Vorrichtung zur Nachbehandlung von Dieselabgasen
EP1167708A3 (fr) * 2000-06-26 2003-08-13 Zeuna-Stärker Gmbh & Co Kg Dispositif pour le traitement ultérieur de gaz d'échappement d'un moteur diesel
WO2006021337A1 (fr) * 2004-08-21 2006-03-02 Umicore Ag & Co. Kg Filtre a particules dote d'un revetement catalytique, son procede de production et son utilisation
WO2006116993A2 (fr) * 2005-05-03 2006-11-09 Burkhardt, C., Armin Filtre a particules de suie assurant une combustion de suie a commande variable
WO2019137925A1 (fr) * 2018-01-12 2019-07-18 Cpt Group Gmbh Élément chauffant
WO2019137926A1 (fr) * 2018-01-12 2019-07-18 Cpt Group Gmbh Dispositif et procédé pour chauffer un dispositif servant au post-traitement des gaz d'échappement
FR3107728A1 (fr) * 2020-02-28 2021-09-03 Faurecia Systemes D'echappement Dispositif de purification de gaz d’échappement à chauffage optimisé
FR3107929A1 (fr) * 2020-03-05 2021-09-10 Psa Automobiles Sa Dispositif de dépollution à catalyseur logeant partiellement une résistance de chauffage protégée, pour une ligne d’échappement d’un véhicule

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2036585A (en) * 1978-12-12 1980-07-02 Degussa Support matrix for catalysts
FR2460388A1 (fr) * 1979-06-29 1981-01-23 Johnson Matthey Co Ltd Appareil et dispositif pour purifier les gaz d'echappement
EP0035053A1 (fr) * 1979-12-20 1981-09-09 Degussa Aktiengesellschaft Filtre catalytique d'épuration de gaz d'échappement Diesel
JPS5765813A (en) * 1980-10-09 1982-04-21 Nippon Soken Inc Purifier for removing particle from exhaust gas of internal combustion engine
DE3205810A1 (de) * 1982-02-10 1983-08-25 Texaco Development Corp., 10650 White Plains, N.Y. Verfahren und vorrichtung zur aufbereitung der abgase von brennkraftmaschinen
US4456457A (en) * 1981-04-28 1984-06-26 Nippon Soken, Inc. Exhaust gas cleaning device for diesel engine
US4503672A (en) * 1983-11-25 1985-03-12 General Motors Corporation Diesel exhaust cleaner with glow plug igniters and flow limiting valve
US4512786A (en) * 1982-04-21 1985-04-23 Mazda Motor Corporation Exhaust gas purifying device
US4544388A (en) * 1983-12-27 1985-10-01 Ford Motor Company Apparatus for periodically oxidizing particulates collected from exhaust gases
US4549398A (en) * 1981-06-22 1985-10-29 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas cleaning device for diesel engines

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2036585A (en) * 1978-12-12 1980-07-02 Degussa Support matrix for catalysts
FR2460388A1 (fr) * 1979-06-29 1981-01-23 Johnson Matthey Co Ltd Appareil et dispositif pour purifier les gaz d'echappement
EP0035053A1 (fr) * 1979-12-20 1981-09-09 Degussa Aktiengesellschaft Filtre catalytique d'épuration de gaz d'échappement Diesel
JPS5765813A (en) * 1980-10-09 1982-04-21 Nippon Soken Inc Purifier for removing particle from exhaust gas of internal combustion engine
US4456457A (en) * 1981-04-28 1984-06-26 Nippon Soken, Inc. Exhaust gas cleaning device for diesel engine
US4549398A (en) * 1981-06-22 1985-10-29 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas cleaning device for diesel engines
DE3205810A1 (de) * 1982-02-10 1983-08-25 Texaco Development Corp., 10650 White Plains, N.Y. Verfahren und vorrichtung zur aufbereitung der abgase von brennkraftmaschinen
US4512786A (en) * 1982-04-21 1985-04-23 Mazda Motor Corporation Exhaust gas purifying device
US4503672A (en) * 1983-11-25 1985-03-12 General Motors Corporation Diesel exhaust cleaner with glow plug igniters and flow limiting valve
US4544388A (en) * 1983-12-27 1985-10-01 Ford Motor Company Apparatus for periodically oxidizing particulates collected from exhaust gases

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 146 (M-147)[1024], 5. August 1982; & JP-A-57 65 813 (NIPPON JIDOSHA BUHIN SOGO KENKYUSHO K.K.) 21.04.1982 *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316637B1 (fr) * 1987-11-13 1990-11-28 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Boîtier pour dispositif d'épuration des gaz d'échappement
US5146743A (en) * 1988-04-25 1992-09-15 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for accelerating the response of an exhaust gas catalyst, and apparatus and electrically heatable carrier bodies for performing the method
US5480621A (en) * 1988-04-25 1996-01-02 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Electrically conductive honeycomb as an exhaust gas catalyst carrier body
EP0412086B1 (fr) * 1988-04-25 1996-11-20 Emitec Gesellschaft für Emissionstechnologie mbH Dispositif pour accelerer la reponse d'un catalyseur de gaz d'echappement
WO1993007364A1 (fr) * 1991-09-28 1993-04-15 Emitec Gesellschaft Für Emissionstechnologie Mbh Pot catalytique
US5562885A (en) * 1991-09-28 1996-10-08 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Exhaust gas catalytic converter
US5839273A (en) * 1993-11-30 1998-11-24 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Method for reducing pollutant emissions of a diesel engine with a downstream oxidation-type catalytic converter
EP1113154A3 (fr) * 1999-12-30 2003-12-03 Faurecia Abgastechnik GmbH Filtre à suie pour véhicules diesel
EP1113154A2 (fr) * 1999-12-30 2001-07-04 Faurecia Abgastechnik GmbH Filtre à suie pour véhicules diesel
EP1167708A3 (fr) * 2000-06-26 2003-08-13 Zeuna-Stärker Gmbh & Co Kg Dispositif pour le traitement ultérieur de gaz d'échappement d'un moteur diesel
FR2816002A1 (fr) * 2000-10-31 2002-05-03 Saint Gobain Ct Recherches Filtres a particules pour la purification des gaz d'echappement des moteurs a combustion interne comportant des allumeurs ceramiques
WO2002036941A3 (fr) * 2000-10-31 2003-04-24 Saint Gobain Ct Recherches Filtres a particules pour la purification des gaz d'echappement des moteurs a combustion interne
DE10105233A1 (de) * 2001-02-02 2002-08-29 Zeuna Staerker Kg Vorrichtung zur Nachbehandlung von Dieselabgasen
US7977275B2 (en) 2004-08-21 2011-07-12 Umicore Ag & Co. Kg Catalytically coated particle filter and method for producing the same and its use
WO2006021337A1 (fr) * 2004-08-21 2006-03-02 Umicore Ag & Co. Kg Filtre a particules dote d'un revetement catalytique, son procede de production et son utilisation
WO2006116993A2 (fr) * 2005-05-03 2006-11-09 Burkhardt, C., Armin Filtre a particules de suie assurant une combustion de suie a commande variable
WO2006116993A3 (fr) * 2005-05-03 2007-03-29 Burkhardt C Armin Filtre a particules de suie assurant une combustion de suie a commande variable
WO2019137925A1 (fr) * 2018-01-12 2019-07-18 Cpt Group Gmbh Élément chauffant
WO2019137926A1 (fr) * 2018-01-12 2019-07-18 Cpt Group Gmbh Dispositif et procédé pour chauffer un dispositif servant au post-traitement des gaz d'échappement
CN111542686A (zh) * 2018-01-12 2020-08-14 纬湃科技有限责任公司 加热用于排气后处理的装置的设备和方法
US11549421B2 (en) 2018-01-12 2023-01-10 Vitesco Technologies GmbH Apparatus and method for heating a device for exhaust gas after-treatment
FR3107728A1 (fr) * 2020-02-28 2021-09-03 Faurecia Systemes D'echappement Dispositif de purification de gaz d’échappement à chauffage optimisé
US11480085B2 (en) 2020-02-28 2022-10-25 Faurecia Systemes D'echappement Device for purifying exhaust gas with optimized heating
FR3107929A1 (fr) * 2020-03-05 2021-09-10 Psa Automobiles Sa Dispositif de dépollution à catalyseur logeant partiellement une résistance de chauffage protégée, pour une ligne d’échappement d’un véhicule

Also Published As

Publication number Publication date
EP0233860A3 (en) 1987-10-14
EP0233860B1 (fr) 1991-05-15
ATE63611T1 (de) 1991-06-15
DE3770016D1 (de) 1991-06-20

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