EP1669563B1 - Abgasreinigungsvorrichtung - Google Patents

Abgasreinigungsvorrichtung Download PDF

Info

Publication number
EP1669563B1
EP1669563B1 EP04787865A EP04787865A EP1669563B1 EP 1669563 B1 EP1669563 B1 EP 1669563B1 EP 04787865 A EP04787865 A EP 04787865A EP 04787865 A EP04787865 A EP 04787865A EP 1669563 B1 EP1669563 B1 EP 1669563B1
Authority
EP
European Patent Office
Prior art keywords
filter
filter body
plasma
exhaust gas
particulates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP04787865A
Other languages
English (en)
French (fr)
Japanese (ja)
Other versions
EP1669563A4 (de
EP1669563A1 (de
Inventor
Tatsuki c/o Hino Motors Ltd. IGARASHI
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.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
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 Hino Motors Ltd filed Critical Hino Motors Ltd
Publication of EP1669563A1 publication Critical patent/EP1669563A1/de
Publication of EP1669563A4 publication Critical patent/EP1669563A4/de
Application granted granted Critical
Publication of EP1669563B1 publication Critical patent/EP1669563B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/103—Oxidation catalysts for HC and CO only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/025—Combinations of electrostatic separators, e.g. in parallel or in series, stacked separators, dry-wet separator combinations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/06—Plant or installations having external electricity supply dry type characterised by presence of stationary tube electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/155—Filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/49—Collecting-electrodes tubular
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
    • F01N13/017—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—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
    • F01N3/0275—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 using electric discharge 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
    • F01N3/033—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/12—Cleaning the device by burning the trapped particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/30—Details of magnetic or electrostatic separation for use in or with vehicles
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/28—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a plasma reactor

Definitions

  • the present invention relates to an exhaust emission control device for removing particulates in exhaust gas from an internal combustion engine such as diesel engine.
  • Particulates or particulate matter discharged from a diesel engine is mainly constituted by carbonic soot and a soluble organic fraction (SOF) of high-boiling hydrocarbon and contains a trace of sulfate (misty sulfuric acid fraction).
  • SOF soluble organic fraction
  • a particulate filter 4 is incorporated in an exhaust pipe 3 through which exhaust gas 2 from a diesel engine 1 flows.
  • the particulate filter 4 comprises a filter body 7 in the form of a porous honeycomb made of ceramics such as cordierite.
  • the filter body 7 has passages 5 or grid-like compartments with inlets alternately plugged by plugs 8, the passages 5 with the unplugged inlets being plugged by the plugs 8 at their outlets; only the exhaust gas 2 passing through porous thin walls 6, which compartmentalize the passages 5, is discharged downstream and the walls 6 capture the particulates at their inner surfaces.
  • the particulates in the exhaust gas 2 are thus captured by and accumulated on the inner surfaces of the walls 6 and spontaneously ignite to be burned off upon shifting to a region of operation with increased exhaust temperature.
  • an operation or driving with temperature at or above a predetermined temperature requisite tends not to continue for a long time, for example, in a vehicle such as a shuttle-bus running mainly on congested city roads, there may be a fear that an accumulated particulate amount exceeds a treated amount, disadvantageously resulting in clogging of the particulate filter 4.
  • the invention was made in view of the above and has its object to provide a plasma assisted exhaust emission control device with less electric power consumption and with no harmful gas discharged into atmosphere.
  • the invention is directed to an exhaust emission control device comprising a filter body constituted by porous members through which exhaust gas passes for capture of particulates entrained in the exhaust gas and electrodes for generating plasma in said filter body, thereby providing a plasma regenerative particulate filter, said particulate filter being incorporated in a filter casing within an exhaust pipe, oxidation catalysts being arranged upstream and downstream of and adjacent to the particulate filter in the filter casing so as to obtain heat insulation effect to the particulate filter.
  • the plasma regenerative particulate filter is sandwiched and heat insulated by the upstream and downstream oxidation catalysts in one and the same filter casing, so that the filter body is rapidly elevated in temperature when the oxidization reaction of the captured particulates begins.
  • the particulates have tendency of being more readily burned off and can be burned off with a shorter electric discharge time than they could conventionally and thus required electric power consumption is less than that required conventionally.
  • the harmful gas such as highly concentrated CO or HC generated due to combustion of the particulates with relatively low temperature by the aid of the plasma is oxidized into harmless CO 2 or H 2 O when it passes through the downstream oxidation catalyst and is discharged.
  • the plasma regenerative particulate filter is divided into a plurality of smaller units which are arranged in parallel with each other in the filter casing, voltage for electric discharge being separately applied to the respective smaller units.
  • the smaller units of the plasma regenerative particulate filter can be separately regenerated, with an advantageous result that power source with relatively small capacity will suffice. Division into the smaller units improves combustibility of the particulates per unit, so that regeneration of the filter through plasma can be attained during stoppage of an engine for example in a vehicle with an idle stopper.
  • the porous members constituting the filter body integrally carry oxidation catalysts, which accelerates the oxidation reaction of the particulates captured by the filter body to lower ignition temperature.
  • combustibility of the particulates in a condition of operation with lower exhaust temperature is further enhanced to attain further satisfactory burn-off of the particulates.
  • a filter body having a plurality of passages in the form of honeycomb through which exhaust gas passes, inlet and outlet ends of the passages being alternately plugged.
  • the filter body may have a rod-like electrode inserted at its axis and a cylindrical electrode fitted over an outer periphery of the filter body.
  • the harmful gas such as highly concentrated CO or HC generated due to combustion of the particulate with relatively low temperature by the aid of plasma can be oxidized into harmless CO 2 or H 2 O when it passes through the downstream oxidation catalyst and is discharged. Thus, the harmful gas is prevented from remaining in the exhaust gas finally discharged into the atmosphere.
  • (III) NO occupying majority of NO x in the exhaust gas can be converted into highly reactive NO 2 when the exhaust gas passed through the upstream oxidation catalyst, which can substantially accelerate the oxidation reaction of the particulates under a condition of operation with relatively high exhaust temperature. This promotes spontaneous combustion of the particulates by no aid of plasma to obtain sufficient burn-off.
  • FIGS. 3 and 4 show an embodiment of the invention in which parts similar to those in Figs. 1 and 2 are represented by the same reference numerals.
  • a plasma regenerative particulate filter 11 comprising a filter body 7 similar to that shown in Fig. 2 above and rod-like and cylindrical electrodes 9 and 10 so as to generate plasma in the filter body 7.
  • the filter body 7 in each of the smaller units 11A, 11B, 11C and 11D has the rod-like electrode 9 inserted into an axis of the filter body 7 and the cylindrical electrode 10 fitted over the outer periphery of the filter body 7.
  • the rod-like electrodes 9 of the smaller units 11A, 11B,11C and 11D are connected to an anode of a power source or buttery 14 through change-over relays 13a, 13b, 13c and 13d, respectively.
  • the cylindrical electrodes 10 of the smaller units 11A, 11B,11C and 11 D are connected to a cathode of the power source 14 through an electrically conductive support member 15 and the filter casing 12 so that voltage for electric discharge may be separately applied to the respective smaller units 11A, 11B, 11C and 11D.
  • the support member 15 serves for support of the smaller units 11A, 11B, 11C and 11D of the particulate filter 11 in the filter casing 12 and also serves as partition or filler for gap between the smaller units 11A,11B,11C and 11D.
  • the above-mentioned particulate filter 11 divided into the plural smaller units 11A, 11B,11C and 11D is accommodated in the filter casing 12 within the exhaust pipe 3.
  • oxidation catalysts 16 and 17, respectively are arranged upstream and downstream of and adjacent to the particulate filter 11 in the filter casing 12 so as to obtain heat insulation effect to the particulate filter 11.
  • Each of the upstream and downstream oxidation catalysts 16 and 17 is of flow-through type and comprises a carrier with a honeycomb structure made of ceramics such as cordierite, said carrier carrying an appropriate amount of platinum.
  • the upstream catalyst 17 may have its capacity and platinum-carrying amount less than those of the downstream catalyst 16.
  • porous members constituting the filter body 7 of each of the above-mentioned smaller units 11A,11B,11C and 11D may carry oxidation catalysts so as to promote the oxidation reaction of the particulates captured by the filter body 7.
  • the inner gas of the filter body 7 is excited to convert oxygen into ozone and NO into NO 2 .
  • These excited exhaust gas components are being activated so that oxidization reaction of the particulates captured by the filter body 7 is accelerated by the excited exhaust gas components, whereby the particulates are satisfactorily burned off even in a condition of operation with lower exhaust temperature.
  • the plasma regenerative particulate filter 11 is sandwiched and heat insulated by the upstream and downstream oxidation catalysts 16 and 17 in one and the same filter casing 12, so that when the oxidation reaction of the captured particulates begins, the filter body 7 is rapidly elevated in temperature.
  • the particulates have tendency of being more readily burned off and can be burned off with a shorter electric discharge time than they could conventionally and thus required electric power consumption is less than that required conventionally.
  • the harmful gas such as highly concentrated CO or HC generated due to combustion of the particulates with relatively low temperature by the aid of plasma is oxidized into harmless CO 2 or H 2 O when it passes through the downstream oxidation catalyst 17 and is discharged.
  • the particulates captured by the filter body 7 can be efficiently burned off by the aid of plasma; the filter body 7 can be rapidly elevated in temperature due to heat insulation effect by the upstream and downstream oxidation catalysts 16 and 17 into environment for ready burn-off the particulates, so that the particulates can be burned off with a shorter electric discharge time than they could conventionally, whereby electric power consumption can be substantially reduced.
  • the harmful gas such as highly concentrated CO or HC generated due to combustion of the particulates with relatively low temperature by the aid of plasma is oxidized into harmless CO 2 or H 2 O when it passes through the downstream oxidation catalyst 17 and is discharged. As a result, the harmful gas is prevented from remaining in the exhaust gas 2 finally discharged into the atmosphere.
  • NO occupying majority of NO x in the exhaust gas 2 can be converted into highly reactive NO 2 when the exhaust gas passes through the upstream oxidation catalyst 16, which substantially accelerates the oxidation reaction of the particulates under a condition of operation with relatively high exhaust temperature, whereby spontaneous combustion of the particulates is promoted by no aid of plasma, thereby providing satisfactory burn-off of the particulates.
  • the particulate filter 11 when the particulate filter 11 is divided into the plural smaller units 11A, 11B, 11C and 11D which are arranged in parallel with each other within the filter casing 12, voltage for electric discharge being separately applicable to the respective smaller units 11A, 11B, 11C and 11D, even the power source 14 with relatively small capacity will suffice; regeneration of the filter through plasma can be attained during stoppage of an engine, for example, in a vehicle with an idle stopper.
  • the oxidation reaction of the particulates captured by the filter body 7 can be accelerated by the oxidation catalysts, so that further reliable burn-off of the particulates can be attained in a region of operation with lower exhaust temperature.
  • an exhaust emission control device of the invention is not limited to the above-mentioned embodiment and that various changed and modifications may be made.
  • the plasma regenerative particulate filter may be constituted by a single unit.
  • the filter body may or may not carry oxidation catalysts. Shapes and arrangement of the filter body and electrodes are not limited to those shown.

Claims (6)

  1. Abgasemissions-Steuervorrichtung, die einen Filterkörper (7) umfasst, der durch poröse Elemente, durch die sich Abgas (2) bewegt, um in dem Abgas (2) mitgeführte Partikel einzufangen, und Elektroden (9, 10), um in dem Filterkörper (7) ein Plasma zu erzeugen, gebildet ist, wodurch ein regenerativer Plasma-Partikelfilter (11) gebildet wird, wobei der Partikelfilter (11) in ein Filtergehäuse (12) in einem Abgasrohr (3) eingebaut ist,
    dadurch gekennzeichnet,
    dass in dem Filtergehäuse (12) stromaufseitig bzw. stromabseitig und benachbart zu dem Partikelfilter (11) Oxidationskatalysatoren (16, 17) angeordnet sind, um so einen Wärmeisolationseffekt zu dem Partikelfilter (11) zu erhalten, und
    dass der regenerative Plasma-Partikelfilter (11) in mehrere kleinere Einheiten (11A, 11B, 11C, 11D) unterteilt ist, die in dem Filtergehäuse (12) parallel zueinander angeordnet sind, wobei die Spannung für die elektrische Entladung an die jeweiligen kleineren Einheiten (11A, 11B, 11C, 11D) getrennt angelegt werden kann.
  2. Abgasemissions-Steuervorrichtung nach Anspruch 1,
    dadurch gekennzeichnet,
    dass der Filterkörper (7) durch poröse Elemente gebildet ist, die einen Oxidationskatalysator einteilig tragen.
  3. Abgasemissions-Steuervorrichtung nach Anspruch 1,
    dadurch gekennzeichnet,
    dass ein Filterkörper (7) verwendet wird, der zahlreiche Durchgänge in Form von Bienenwaben umfasst, durch die sich das Abgas (2) bewegt, wobei Einlass- und Auslassenden der jeweiligen Durchgänge abwechselnd verstopft sind.
  4. Abgasemissions-Steuervorrichtung nach Anspruch 2, dadurch gekennzeichnet,
    dass ein Filterkörper (7) verwendet wird, der zahlreiche Durchgänge in Form von Bienenwaben umfasst, durch die sich das Abgas (2) bewegt, wobei Einlass- und Auslassenden der jeweiligen Durchgänge abwechselnd verstopft sind.
  5. Abgasemissions-Steuervorrichtung nach Anspruch 3, dadurch gekennzeichnet,
    dass der Filterkörper (7) eine stabartige Elektrode (9), die längs einer Achse des Filterkörpers (7) eingesteckt ist, und eine zylindrische Elektrode (10), die über einem äußeren Umfang des Filterkörpers (7) angebracht ist, besitzt.
  6. Abgasemissions-Steuervorrichtung nach Anspruch 4, dadurch gekennzeichnet,
    dass der Filterkörper (7) eine stabartige Elektrode (7), die längs einer Achse des Filterkörpers (7) eingesteckt ist, und eine zylindrische Elektrode (10), die über einem äußeren Umfang des Filterkörpers (7) angebracht ist, besitzt.
EP04787865A 2003-09-11 2004-09-10 Abgasreinigungsvorrichtung Expired - Fee Related EP1669563B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003319850A JP2005083346A (ja) 2003-09-11 2003-09-11 排気浄化装置
PCT/JP2004/013225 WO2005026506A1 (ja) 2003-09-11 2004-09-10 排気浄化装置

Publications (3)

Publication Number Publication Date
EP1669563A1 EP1669563A1 (de) 2006-06-14
EP1669563A4 EP1669563A4 (de) 2006-12-20
EP1669563B1 true EP1669563B1 (de) 2008-06-25

Family

ID=34308586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04787865A Expired - Fee Related EP1669563B1 (de) 2003-09-11 2004-09-10 Abgasreinigungsvorrichtung

Country Status (5)

Country Link
US (1) US20070028603A1 (de)
EP (1) EP1669563B1 (de)
JP (1) JP2005083346A (de)
DE (1) DE602004014627D1 (de)
WO (1) WO2005026506A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011029730A1 (de) * 2009-09-14 2011-03-17 Emitec Gesellschaft Für Emissionstechnologie Mbh Vorrichtung zur behandlung von russpartikel enthaltendem abgas

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4327506B2 (ja) * 2003-06-03 2009-09-09 日野自動車株式会社 排気浄化装置
JP2005344581A (ja) * 2004-06-02 2005-12-15 Hino Motors Ltd パティキュレートフィルタ
JP2006077591A (ja) * 2004-09-07 2006-03-23 Hino Motors Ltd 排気浄化装置
GB2429417B (en) * 2005-08-25 2010-08-11 Perkins Engines Co Ltd Autoselective regenerating particulate filter
JP5288342B2 (ja) * 2005-10-05 2013-09-11 ダイハツ工業株式会社 プラズマ反応器用電極
CN101292077B (zh) * 2005-10-18 2010-06-23 丰田自动车株式会社 内燃机的排气净化装置
JP4692220B2 (ja) * 2005-10-27 2011-06-01 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP2007187136A (ja) * 2006-01-16 2007-07-26 Ooden:Kk 粒子状物質除去装置及び粒子状物質除去方法
KR101410229B1 (ko) 2007-08-20 2014-06-23 삼성전자주식회사 오디오 신호의 연속 정현파 신호 정보를 인코딩하는 방법및 장치와 디코딩 방법 및 장치
DE102008035562A1 (de) * 2008-07-30 2010-02-04 Emitec Gesellschaft Für Emissionstechnologie Mbh Abgasreinigungssystem für Dieselmotoren von Nutzkraftfahrzeugen
EP2460158A4 (de) * 2009-07-27 2013-09-04 Verfahren und vorrichtung zur verarbeitung eines tonsignals
DE102009041092A1 (de) * 2009-09-14 2011-03-24 Emitec Gesellschaft Für Emissionstechnologie Mbh Abgasbehandlungsvorrichtung mit zwei Wabenkörpern zur Erzeugung eines elektrischen Potentials
DE102010034250A1 (de) * 2010-08-13 2012-02-16 Emitec Gesellschaft Für Emissionstechnologie Mbh Halterung für zumindest eine Elektrode in einer Abgasleitung
DE102010045506A1 (de) 2010-09-15 2012-03-15 Emitec Gesellschaft Für Emissionstechnologie Mbh Vorrichtung zur Erzeugung eines elektrischen Feldes in einem Abgassystem
CN103845997A (zh) * 2014-03-24 2014-06-11 德清天皓环保科技有限公司 一种等离子有机废气净化器箱体
FR3058648A1 (fr) * 2016-11-14 2018-05-18 Universite De Poitiers Procede de decontamination d'un catalyseur contamine par du carbone
CN108839540A (zh) * 2018-06-25 2018-11-20 芜湖万向新元环保科技有限公司 一种预处理等离子组件
CN117231328A (zh) * 2019-03-11 2023-12-15 南加利福尼亚大学 用于基于等离子体的治理的系统和方法
GB2586611A (en) * 2019-08-28 2021-03-03 Hieta Tech Limited Nonthermal plasma generator and method of manufacturing the same
KR102530208B1 (ko) * 2022-12-30 2023-05-09 에너젠(주) 플라즈마 모듈 및 이를 포함하는 저전력 발전기용 매연저감장치

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02104830U (de) * 1988-10-05 1990-08-21
JP2591260B2 (ja) * 1990-06-13 1997-03-19 日産自動車株式会社 エンジンの排気浄化装置
BR9507282A (pt) * 1994-04-06 1997-09-23 Minnesota Mining & Mfg Cartucho de filtro e filtro de partículas diesel
US5746984A (en) * 1996-06-28 1998-05-05 Low Emissions Technologies Research And Development Partnership Exhaust system with emissions storage device and plasma reactor
JP3230799B2 (ja) * 1996-10-11 2001-11-19 日野自動車株式会社 ディーゼル機関の排ガス浄化装置
GB9801775D0 (en) * 1998-01-29 1998-03-25 Aea Technology Plc Gas purification
JP3690112B2 (ja) * 1998-05-22 2005-08-31 トヨタ自動車株式会社 ディーゼル機関の排気浄化装置
DE10130163B4 (de) * 2000-11-21 2012-01-12 Siemens Ag Anordnung zur Verminderung kohlenstoffhaltiger Partikelemissionen von Dieselmotoren
JP2002276333A (ja) * 2001-03-22 2002-09-25 Mitsubishi Heavy Ind Ltd 放電型排ガス浄化装置
US6722584B2 (en) * 2001-05-02 2004-04-20 Asb Industries, Inc. Cold spray system nozzle
JP3855777B2 (ja) * 2002-01-23 2006-12-13 トヨタ自動車株式会社 内燃機関のパティキュレートフィルタ
US20030182930A1 (en) * 2002-03-28 2003-10-02 Goulette David Alexander Integrated non-thermal plasma reactor-diesel particulate filter
US7258723B2 (en) * 2004-09-27 2007-08-21 Arvin Technologies, Inc. Particulate filter assembly and associated method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011029730A1 (de) * 2009-09-14 2011-03-17 Emitec Gesellschaft Für Emissionstechnologie Mbh Vorrichtung zur behandlung von russpartikel enthaltendem abgas
RU2503829C2 (ru) * 2009-09-14 2014-01-10 Эмитек Гезельшафт Фюр Эмиссионстехнологи Мбх Устройство для очистки содержащего частицы сажи отработавшего газа

Also Published As

Publication number Publication date
WO2005026506A1 (ja) 2005-03-24
EP1669563A4 (de) 2006-12-20
EP1669563A1 (de) 2006-06-14
DE602004014627D1 (de) 2008-08-07
JP2005083346A (ja) 2005-03-31
US20070028603A1 (en) 2007-02-08

Similar Documents

Publication Publication Date Title
EP1669563B1 (de) Abgasreinigungsvorrichtung
US7331170B2 (en) Exhaust emission control device
KR100496765B1 (ko) 산소 함유 배기 가스 중의 산화 유해 물질을 제거하기위한 방법 및 장치 그리고 그것에 의해 작동되는 엔진
US8581480B2 (en) Self-regenerating particulate trap systems for emissions and methods thereof
EP1669564A1 (de) Abgasreinigungsvorrichtung
WO2007032564A1 (ja) 内燃機関の排気浄化装置
JP4873564B2 (ja) 排ガス浄化装置
JP2004346828A (ja) 排気浄化装置
US11125173B2 (en) Exhaust gas purification system for vehicle and method of controlling the same
US20170306826A1 (en) Particulate collection system and particulate collection apparatus
US20040188238A1 (en) System and method for concurrent particulate and NOx control
JP5474468B2 (ja) プラズマ放電を用いた排気ガス浄化装置
US20050079112A1 (en) Surface discharge non-thermal plasma reactor and method
JP4479610B2 (ja) 排ガス浄化装置
WO2003082426A2 (en) Integrated non-thermal plasma reactor-diesel particulate filter
EP2075422A1 (de) Abgasbehandlungssystem für einen Verbrennungsmotor
JP2007132240A (ja) 内燃機関の排気浄化装置
WO2006046628A1 (ja) 排気浄化装置
JP4529822B2 (ja) 内燃機関の排気浄化装置
JP4210555B2 (ja) 排気浄化装置
JP2004084638A (ja) エンジン排ガスの処理方法およびその装置
Herling et al. Application of non-thermal plasma assisted catalyst technology for diesel engine emission reduction
JP4735979B2 (ja) 排ガス浄化装置及び排ガス浄化方法
JP6957283B2 (ja) エンジンシステム
JP2004190528A (ja) 排気浄化装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060307

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

A4 Supplementary search report drawn up and despatched

Effective date: 20061120

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

RIC1 Information provided on ipc code assigned before grant

Ipc: F01N 3/035 20060101ALI20061114BHEP

Ipc: F01N 3/027 20060101AFI20061114BHEP

17Q First examination report despatched

Effective date: 20070216

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: EXHAUST GAS PURIFYING DEVICE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602004014627

Country of ref document: DE

Date of ref document: 20080807

Kind code of ref document: P

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

Ref country code: GB

Payment date: 20080917

Year of fee payment: 5

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

Ref country code: DE

Payment date: 20080822

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed

Effective date: 20090326

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090529

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

Ref country code: FR

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

Effective date: 20080930

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

Effective date: 20090910

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

Ref country code: DE

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

Effective date: 20100401

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

Ref country code: GB

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

Effective date: 20090910