EP2616181B1 - Dispositif pour générer des champs électriques dans un système d'échappement - Google Patents
Dispositif pour générer des champs électriques dans un système d'échappement Download PDFInfo
- Publication number
- EP2616181B1 EP2616181B1 EP11767659.3A EP11767659A EP2616181B1 EP 2616181 B1 EP2616181 B1 EP 2616181B1 EP 11767659 A EP11767659 A EP 11767659A EP 2616181 B1 EP2616181 B1 EP 2616181B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- exhaust gas
- projections
- electric field
- flow direction
- 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.)
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- 230000005684 electric field Effects 0.000 title claims description 23
- 239000002184 metal Substances 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 30
- 241000264877 Hippospongia communis Species 0.000 description 17
- 239000004071 soot Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 5
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 238000004140 cleaning Methods 0.000 description 1
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- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- 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
- B03C3/86—Electrode-carrying 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
- F01N3/01—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators
-
- 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
- B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
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- 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
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/04—Magnetic separation acting directly on the substance being separated with the material carriers in the form of trays or with tables
- B03C1/08—Magnetic separation acting directly on the substance being separated with the material carriers in the form of trays or with tables with non-movable magnets
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- 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
- B03C3/12—Plant or installations having external electricity supply dry type characterised by separation of ionising and collecting stations
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- 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
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- 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
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- 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
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
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- 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
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- 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
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- 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
- F01N3/0231—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 special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
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- 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
- B03C2201/10—Ionising electrode with two or more serrated ends or sides
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- 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
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- 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
- F01N2330/12—Metallic wire mesh fabric or knitting
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- 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
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
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- 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
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/38—Honeycomb supports characterised by their structural details flow channels with means to enhance flow mixing,(e.g. protrusions or projections)
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- 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
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/42—Honeycomb supports characterised by their structural details made of three or more different sheets, foils or plates stacked one on the other
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- 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
Definitions
- the present invention relates to a device for generating an electric field in an exhaust system, in particular in the exhaust system of a motor vehicle.
- the invention relates to a device for the treatment of soot particles containing exhaust gas, which can be used in particular with a so-called electrostatic filter or electrostatic precipitator.
- the invention is preferably used in the treatment of exhaust gases of mobile internal combustion engines in the automotive sector.
- a central spray electrode which extends approximately centrally through the exhaust pipe, and a surrounding jacket surface of the exhaust pipe as a collector electrode used to form a capacitor.
- the spray electrode for example, can be operated with a high voltage which is in the range of about 15 kV.
- corona discharges can be formed by which the particles flowing with the exhaust gas through the electric field are charged in a unipolar manner. Due to this charge, the particles migrate to the collector electrode due to the electrostatic Coulomb forces.
- the exhaust pipe is designed as a collector electrode
- the collector electrode for example, is designed as a wire grid.
- the addition of particles takes place on the wire grid for the purpose of possibly combining the particles with other particles, so as to achieve an agglomeration.
- the exhaust gas flowing through the grid then tears the larger particle agglomerates again and leads them to classical filter systems.
- the EP-A2-0 862 949 describes an exhaust treatment device that can be ionized by generating an electric field soot particles and disposed in an exhaust pipe of a diesel engine.
- the device comprises a plurality of tip electrodes connected to a tip electrode holder, wherein a row of tip electrode holders are each formed from a sheet metal.
- a row of tip electrode holders are each formed from a sheet metal.
- a device for the electrostatic cleaning of air comprises an ionization section and a separating section, through which air flows successively.
- the ionization device comprises a discharge electrode plate and ground electrode plate, which are arranged alternately transversely to the flow direction.
- the DE 23 63 149 discloses an electrostatic precipitator for collecting dust from industrial exhaust gases comprising a plurality of discharge electrode plates juxtaposed in a gas flow and collecting electrode plates arranged substantially parallel to the gas flow. At the upstream edge of the discharge electrode plate and at the downstream edge of the collecting electrode plate, respectively, needle tips are attached via hollow profiles as discharge electrodes.
- a fan which has an air treatment device in which fresh air and room air are mixed together and treated by an ionization unit.
- a device for generating an electric field in an exhaust system is to be proposed, which can be provided by simple means and known technologies as part of a series production.
- the device should be easy to integrate into an exhaust pipe, in particular so that a targeted alignment of the electrodes is made possible towards the desired electric field or the associated particle trap.
- the inventive device for generating an electric field in an exhaust system of a mobile internal combustion engine has an exhaust pipe, in which at least one electrode is arranged, which is contacted with a power supply.
- the at least one electrode is formed with at least one metal sheet, the at least one electrode extends in the flow direction of the exhaust gas and all electrodes have in the flow direction of the exhaust gas a plurality of projections, which were generated by removing material of at least one metal sheet near the front edge, wherein the at least one electrode is integrated in a honeycomb copper.
- This device is in particular a pole of an electrostatic filter. It is preferred that the electric field (possibly a pulsed) DC field is. In particular, voltages in the range of 10 kV to 30 kV [kilo-volts] can be generated.
- the exhaust system is in particular that of a mobile internal combustion engine, in particular that of a diesel engine of a motor vehicle.
- the region of the exhaust pipe, which is performed with a corresponding electric field, may optionally be electrically isolated, which may be realized in the axial direction of the exhaust pipe, as well as radially outward.
- the at least one electrode is positioned in the interior of the exhaust pipe, ie in the space through which the exhaust gas flows.
- the at least one electrode is electrically contacted with a power supply, for example by means of appropriate electrical conductors, connectors, solder joints, etc.
- an electrically encapsulated implementation of the power supply through the exhaust pipe is preferred.
- the electrode is formed with at least one metal sheet.
- a "metal sheet” is understood in particular to mean a (flat) strip of metallic flat material.
- the metal sheet can be made substantially smooth or flat, but it is also possible that the metal sheet is structured, so for example. has a corrugation.
- the series production is already very advanced, so that here a precise design of similarly shaped metal sheets has already been implemented. This manufacturing knowledge can now be used to perform such metal sheets as electrodes and to use for generating a corresponding electric field.
- the metal sheet with corresponding contact conductors, electrical conductors, soldering points and the like is executed, so that possibly even with the use of insulating coatings or deposits for the metal sheet, a predetermined current path can be formed by the metal sheet itself.
- correspondingly electrically conductive materials come into consideration here.
- a flat side of the metal sheet is arranged parallel to the flow direction of the exhaust gas.
- the metal sheet represents the smallest possible flow resistance for the flowing exhaust gas.
- the metal sheet is in particular of a material with a low ohmic resistance, which cumulatively or alternatively has only a low oxidation capacity.
- the metal sheet should preferably consist of a homogeneous material, so that a uniform field with a good ionizing ability is formed on the projections.
- the metal sheet preferably has a thickness of less than 0.1 mm, more preferably less than 0.065 mm, most preferably less than 0.035 mm.
- the at least one electrode extends in the flow direction of the exhaust gas. In other words, that means that the metal sheet is arranged to the flow direction of the exhaust gas, that it represents the smallest possible flow resistance.
- the flat side of the metal sheet is arranged in particular parallel to the flow direction of the exhaust gas.
- the at least one electrode has a plurality of projections in the flow direction of the exhaust gas.
- a corresponding projection can be generated, for example, by the material of the metal sheets being removed near an end edge, for example being punched out.
- the remaining projections which are directed in particular in the direction of the electric field, are suitable for forming local centers for the electric field. Possibly. It may also be useful that only these projections are contacted with corresponding electrical conductors, while remaining parts of the metal sheet are electrically insulated. So the power line can be targeted to these projections.
- the metal sheet or, the projections are arranged or aligned with respect to the exhaust pipe so that they have a uniform electric field towards a collector electrode, in particular a downstream particle trap result.
- the at least one projection has a length of 15 mm [millimeter] to 20 mm [millimeter] in the flow direction, so that oscillation of the projections during operation is avoided.
- At least three projections are each formed at a distance from at least two adjacent projections, wherein the distances are substantially equal.
- the distances differ by no more than 10%.
- the distances are at least 10 mm, more preferably at least 30 mm, most preferably at least 50 mm.
- the projections on the metal sheet with a winding corresponding distance must be arranged to each other.
- the relatively large distances also prevent an (undesired) electric field from forming between the projections.
- the at least one projection forms a tapered electrode, wherein the tip of the projection has an angle of at most 30 °, preferably of at most 20 °, particularly preferably of at most 10 °.
- the at least one tip of the projection is oriented transversely to the flow direction, wherein tips of different projections can be aligned in different directions.
- the at least one electrode is integrated in a honeycomb body.
- a honeycomb body For example, it is known to provide metallic honeycomb bodies in which at least partially structured layers of metal foils are stacked, wound and / or wound to form substantially parallel channels.
- these metal foils of the honeycomb body may possibly be designed with a thinner material thickness, the honeycomb structure as a whole must be considered relatively stiff, so that the electrode can be securely fixed to the metal sheet with these metal foils or the honeycomb body.
- the honeycomb body is a kind of support structure for the electrode or the metal sheet.
- the electrode may need to be electrically insulated from the honeycomb body. If, for example, electrically insulating coatings are provided here, they can also serve as a basis for electrical conductors to the electrode, which are simply applied to this electrical insulating coating.
- the at least one electrode is arranged downstream of a particle trap in the flow direction of the exhaust gas.
- the here (directly) downstream particle trap serves as a kind of collector electrode.
- the particulate trap is in particular a so-called open bypass filter in which there are no completely closed flow channels.
- the particle trap is rather formed with a metallic fleece and metallic corrugated layers in which openings, conductive structures, etc. are provided.
- the guide structures form flow bottlenecks in the flow passages, so that the residence time or impact probability for soot particles in the interior of the particle trap is increased.
- WO-A-01/80978 WO-A-02/00326 ; WO-A-2005/099867 ; WO-A-2005/066469 ; WO 2006/136431 ; WO 2007/140932 ,
- the regeneration of such a particle trap is preferably carried out continuously based on the CRT method.
- an oxidatively acting coating is realized in the particle trap itself, either in a zone thereof or in all areas of the particle trap.
- Fig. 1 shows a first embodiment of the device 1 according to the invention for generating an electric field 2 in an exhaust system 3.
- the device 1 also includes a region of an exhaust pipe 4, in which at least one electrode 5 is arranged.
- a plurality of electrodes 5 are integrated into a (single) honeycomb body 10.
- a power supply 6 is provided, which is electrically isolated from the exhaust pipe 4 is passed through the electrical contact 12.
- the electrodes 5 are in this case formed with a (optionally separate) metal sheet 7, which extends substantially parallel in the flow direction 8 of the exhaust gas and the front side has a plurality of projections 9.
- the desired electric field 2 is formed between the electrodes 5 and the particle trap 11 following in the flow direction 8, in which the soot particles can agglomerate or be charged.
- the electrically charged particles then strike the particle trap 11, where they are preferably stored in or on the filter material and converted into gaseous constituents as part of a regeneration.
- Fig. 2 now illustrates a variant of the device 1, wherein the electrodes 5 are again integrated in a honeycomb body 10.
- Shown here is a perspective view of a cylindrical housing 13, in which a plurality of at least partially structured (electrically inactive) metal foils (shown in white) and (electrically at least partially active) metal sheets (indicated in black) is arranged. Between the structures of the metal foils or metal sheets, passages are provided which are longitudinally passable and run essentially parallel to one another.
- the electrodes 5 extend beyond an end face, wherein preferably a uniform distribution over the cross section of the honeycomb body 10 is preferred.
- Fig. 3 schematically shows a plan view in or against the flow direction of the exhaust gas to an embodiment of the device according to the invention 1.
- a honeycomb body 10 is arranged in a housing 13.
- the honeycomb body 10 contains at least one metal sheet 7, which forms projections 9, which serve as an electrode 5. Via an electrical contact 12, the electrodes can be subjected to a voltage.
- Each projection 9 has at least a first distance 14 and a second distance 15 to adjacent electrodes 5. The first distance 14 and the second distance 15 are substantially equal, the projections 9 being distributed uniformly over an end face of the honeycomb body 10.
- an apparatus for generating an electric field in an exhaust system, which can be provided by simple means and known technologies as part of a series production.
- the device can be easily integrated into an exhaust pipe, in particular so that a targeted alignment of the electrodes is made possible towards the desired electric field or the associated particle trap.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Electrostatic Separation (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Claims (4)
- Dispositif (1) pour produire un champ (2) électrique dans un système (3) de gaz d'échappement d'une machine à combustion interne mobile, comportant un conduit (4) pour les gaz d'échappement par lequel il est fixé une direction (8) de flux des gaz d'échappement et dans lequel est disposé au moins une électrode (5), qui est en contact avec une alimentation (6) en courant, et un corps (10) alvéolaire, dans lequel la au moins une électrode (5) est formée avec au moins une tôle (7) métallique, dans lequel la au moins une électrode (5) s'étend dans la direction (8) de flux du gaz d'échappement, dans lequel la au moins une électrode (5) est intégrée dans le corps (10) alvéolaire et dans lequel toutes les électrodes (5) dans la direction (8) de flux du gaz d'échappement comportent plusieurs saillies (9), caractérisé en ce que les saillies (9) ont été produites par suppression de matière de la au moins une tôle (7) métallique à proximité d'un bord frontal.
- Dispositif (1) suivant la revendication 1, dans lequel au maximum trois électrodes (5) sont prévues.
- Dispositif (1) suivant la revendication 1 ou 2, dans lequel sont formées au moins trois saillies (9) avec une distance (14, 15) respective par rapport à au moins deux saillies (9) voisines, les distances (14, 15) étant égales.
- Dispositif (1) suivant l'une des revendications précédentes, dans lequel un piège (11) à particules est disposé en aval de la au moins une électrode (5) dans la direction (8) de flux du gaz d'échappement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010045506A DE102010045506A1 (de) | 2010-09-15 | 2010-09-15 | Vorrichtung zur Erzeugung eines elektrischen Feldes in einem Abgassystem |
PCT/EP2011/065883 WO2012035033A1 (fr) | 2010-09-15 | 2011-09-13 | Dispositif pour générer des champs électriques dans un système d'échappement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2616181A1 EP2616181A1 (fr) | 2013-07-24 |
EP2616181B1 true EP2616181B1 (fr) | 2016-01-13 |
Family
ID=44785827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11767659.3A Not-in-force EP2616181B1 (fr) | 2010-09-15 | 2011-09-13 | Dispositif pour générer des champs électriques dans un système d'échappement |
Country Status (8)
Country | Link |
---|---|
US (1) | US8790448B2 (fr) |
EP (1) | EP2616181B1 (fr) |
JP (1) | JP5960700B2 (fr) |
KR (1) | KR101444628B1 (fr) |
CN (1) | CN103118790B (fr) |
DE (1) | DE102010045506A1 (fr) |
RU (1) | RU2555711C2 (fr) |
WO (1) | WO2012035033A1 (fr) |
Family Cites Families (28)
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DE10020170C1 (de) | 2000-04-25 | 2001-09-06 | Emitec Emissionstechnologie | Verfahren zum Entfernen von Rußpartikeln aus einem Abgas und zugehöriges Auffangelement |
JPS4989962A (fr) * | 1972-12-30 | 1974-08-28 | ||
BR9106611A (pt) * | 1990-07-02 | 1993-06-01 | Carl M Fleck | Processo e dispositivo para purificacao de gases de escapamento |
DE4236271C2 (de) * | 1991-10-28 | 1994-09-22 | Toyota Motor Co Ltd | Abgasemissionssteuervorrichtung unter Einsatz eines katalytischen Konverters mit einem Kohlenwasserstoffadsorptionsmittel |
RU2026751C1 (ru) * | 1992-05-13 | 1995-01-20 | Елена Владимировна Володина | Устройство для стерилизации и тонкой фильтрации газа |
US5465573A (en) * | 1992-07-29 | 1995-11-14 | Ngk Insulators, Ltd. | Multi-stage honeycomb heater |
US5707428A (en) * | 1995-08-07 | 1998-01-13 | Environmental Elements Corp. | Laminar flow electrostatic precipitation system |
US5733360A (en) * | 1996-04-05 | 1998-03-31 | Environmental Elements Corp. | Corona discharge reactor and method of chemically activating constituents thereby |
JP3004938B2 (ja) | 1997-03-07 | 2000-01-31 | 株式会社オーデン | 電気集塵装置及びその製造方法 |
DE10026696A1 (de) * | 2000-05-30 | 2001-12-20 | Emitec Emissionstechnologie | Partikelfalle |
DE10031200A1 (de) | 2000-06-27 | 2002-01-17 | Emitec Emissionstechnologie | Partikelfalle zum Abscheiden von Partikeln aus dem Strom eines Fluids, Verfahren zum Abscheiden von Partikeln aus dem Strom eines Fluids und Verwendung einer Partikelfalle |
DE20117659U1 (de) | 2001-10-29 | 2002-01-10 | Emitec Gesellschaft für Emissionstechnologie mbH, 53797 Lohmar | Offener Partikelfilter mit Heizelement |
JP4292868B2 (ja) * | 2003-05-27 | 2009-07-08 | トヨタ自動車株式会社 | 排ガス浄化装置 |
JP2005083346A (ja) | 2003-09-11 | 2005-03-31 | Hino Motors Ltd | 排気浄化装置 |
DE102004001417A1 (de) | 2004-01-09 | 2005-08-04 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Partikelfilter umfassend eine metallische Faserlage |
US7959868B2 (en) | 2004-04-12 | 2011-06-14 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purifying apparatus |
WO2005102535A1 (fr) * | 2004-04-22 | 2005-11-03 | Techin Ag | Procede et dispositif d'affaiblissement de particules de gaz d'echappement emis par des moteurs |
DE102005029338A1 (de) | 2005-06-24 | 2007-02-08 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Verfahren zum Betrieb einer Partikelfalle sowie Vorrichtung zur Durchführung des Verfahrens |
JP4479610B2 (ja) * | 2005-07-01 | 2010-06-09 | トヨタ自動車株式会社 | 排ガス浄化装置 |
JP4980601B2 (ja) * | 2005-10-05 | 2012-07-18 | ダイハツ工業株式会社 | プラズマ反応器用電極 |
DE102006001831A1 (de) | 2006-01-13 | 2007-09-20 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Verfahren und Vorrichtung zur Verringerung der Partikelanzahl im Abgas einer Verbrennungskraftmaschine |
DE102006026324A1 (de) * | 2006-06-02 | 2007-12-06 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Nebenstromfilter mit verbessertem Filterwirkungsgrad |
US8003058B2 (en) * | 2006-08-09 | 2011-08-23 | Airinspace B.V. | Air purification devices |
RU2330726C1 (ru) * | 2006-10-20 | 2008-08-10 | ЗАО "Кондор-Эко" | Электрофильтр с электродами волнового профиля |
JP2009074438A (ja) * | 2007-09-20 | 2009-04-09 | Toyota Central R&D Labs Inc | 排気浄化装置 |
JP2010007871A (ja) | 2008-06-24 | 2010-01-14 | Daikin Ind Ltd | 換気装置 |
JP5527208B2 (ja) * | 2008-08-21 | 2014-06-18 | パナソニック株式会社 | 電気集じん機 |
DE102009041092A1 (de) | 2009-09-14 | 2011-03-24 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Abgasbehandlungsvorrichtung mit zwei Wabenkörpern zur Erzeugung eines elektrischen Potentials |
-
2010
- 2010-09-15 DE DE102010045506A patent/DE102010045506A1/de not_active Withdrawn
-
2011
- 2011-09-13 EP EP11767659.3A patent/EP2616181B1/fr not_active Not-in-force
- 2011-09-13 JP JP2013528642A patent/JP5960700B2/ja not_active Expired - Fee Related
- 2011-09-13 KR KR1020137009044A patent/KR101444628B1/ko active IP Right Grant
- 2011-09-13 CN CN201180044238.9A patent/CN103118790B/zh not_active Expired - Fee Related
- 2011-09-13 WO PCT/EP2011/065883 patent/WO2012035033A1/fr active Application Filing
- 2011-09-13 RU RU2013116737/03A patent/RU2555711C2/ru active
-
2013
- 2013-03-14 US US13/803,569 patent/US8790448B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE102010045506A1 (de) | 2012-03-15 |
WO2012035033A1 (fr) | 2012-03-22 |
CN103118790B (zh) | 2015-12-09 |
US8790448B2 (en) | 2014-07-29 |
JP5960700B2 (ja) | 2016-08-02 |
RU2013116737A (ru) | 2014-10-20 |
KR101444628B1 (ko) | 2014-09-26 |
US20130291731A1 (en) | 2013-11-07 |
CN103118790A (zh) | 2013-05-22 |
KR20130062355A (ko) | 2013-06-12 |
RU2555711C2 (ru) | 2015-07-10 |
JP2013540936A (ja) | 2013-11-07 |
EP2616181A1 (fr) | 2013-07-24 |
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