WO2020064579A1 - Dispositif de post-traitement de gaz d'échappement - Google Patents

Dispositif de post-traitement de gaz d'échappement Download PDF

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Publication number
WO2020064579A1
WO2020064579A1 PCT/EP2019/075441 EP2019075441W WO2020064579A1 WO 2020064579 A1 WO2020064579 A1 WO 2020064579A1 EP 2019075441 W EP2019075441 W EP 2019075441W WO 2020064579 A1 WO2020064579 A1 WO 2020064579A1
Authority
WO
WIPO (PCT)
Prior art keywords
elements
flow
disk
disc
disc elements
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.)
Ceased
Application number
PCT/EP2019/075441
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German (de)
English (en)
Inventor
Peter Hirth
Christian Schorn
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.)
Vitesco Technologies GmbH
Original Assignee
Vitesco Technologies 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 Vitesco Technologies GmbH filed Critical Vitesco Technologies GmbH
Publication of WO2020064579A1 publication Critical patent/WO2020064579A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • 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
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F01N13/0093—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series the purifying devices are of the same type
    • 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
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features 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
    • 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
    • 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
    • F01N3/18—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 characterised by methods of operation; Control
    • F01N3/20—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 characterised by methods of operation; Control specially adapted for 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
    • 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
    • F01N3/18—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 characterised by methods of operation; Control
    • F01N3/20—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 characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • F01N3/2026—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect
    • 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
    • F01N3/24—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 characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • 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
    • F01N2240/16—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 an electric heater, i.e. a resistance heater
    • 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
    • F01N2330/60—Discontinuous, uneven properties of filter material, e.g. different material thickness along the longitudinal direction; Higher filter capacity upstream than downstream in same housing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a device for the catalytic treatment of exhaust gases, with a flow path which is delimited by a housing and through which a flow direction can flow from an inflow opening to an outflow opening, a catalyst being arranged within the flow path and comprising a plurality of disk elements is formed, the disc elements are arranged one behind the other in the flow direction of the exhaust gas and the disc elements each have a plurality of flowable channels and have a catalytically active surface layer.
  • Catalysts are regularly used for exhaust gas aftertreatment of internal combustion engines, which convert individual components of the exhaust gas generated during combustion into less harmful products.
  • catalysts are known which are formed from a ceramic base material and are provided with special coatings, or catalysts made from metallic honeycomb bodies.
  • the catalysts are regularly installed in flow paths which are formed from tubes and housings and are used for the targeted guidance of the exhaust gas.
  • a disadvantage of the devices in the prior art is, in particular, that large volume fractions of the exhaust gas aftertreatment systems remain unused catalytically and that the uniform flow distribution of the exhaust gas within the flow paths is not optimal.
  • An embodiment of the invention relates to a device for the catalytic treatment of exhaust gases, with a flow tion path, which is delimited by a housing and can be traversed along a flow direction from an inflow opening to an outflow opening, a catalyst being arranged within the flow path, which is formed from a plurality of disk elements, the disk elements in the flow direction of the exhaust gas one behind the other are arranged and the disc elements each have a plurality of flowable channels and have a catalytically active edge layer, the disc elements being arranged relative to one another in such a way that spaces are formed at least in sections between the directly adjacent disc elements, the intermediate spaces being free of catalytically active Elements are.
  • the catalyst according to the invention consists of a plurality of individual disk elements which together bring about the catalytic conversion.
  • the catalytic converter is characterized in particular by the fact that the disk elements are spaced apart from one another at least in sections, so that exhaust gas flowing through the individual disk elements flows into the flow channels of the first disk element and flows out of the latter into an intermediate space between the disk elements and then into the flow channels of the second disk element flows in and out of these again and in the same way flows in and out through the possibly existing disk elements.
  • Each inflow process into the flow channels of a disk element means that the flow boundary layer has to be newly formed. This is particularly advantageous since it significantly increases the values for heat transport and mass transport.
  • an arrangement of several disk elements can thus achieve greater efficiency than in a catalytic converter with the same volume with only one gas inlet and one gas outlet and continuous flow channels in between.
  • the repeated inflow and outflow also achieve an improved uniform velocity distribution across the cross section.
  • an improved uniform concentration distribution of the exhaust gas over the cross section of the catalytic converter or the individual disk elements is also achieved.
  • a subsequent catalytic converter can be made smaller and still achieve a comparably good exhaust gas purification.
  • the disc elements are preferably formed by metallic honeycomb bodies, which are produced by winding a stack of metallic foils.
  • the metallic foils can be smooth and / or structured to produce different geometries of the flow channels.
  • the metallic foils can also be provided with different catalytic coatings which have a positive influence on the exhaust gas conversion.
  • the honeycomb body can be accommodated in a casing tube, for example, or inserted directly into the housing of the exhaust gas flow path.
  • the individual disc elements each have a defined fixed diameter. This means that there are no changes in the cross section and / or the diameter within a slide element. Therefore, all disc elements can be easily produced by the known methods for producing a metallic honeycomb body. By connecting several disk elements in series, each with different diameters, cross-sectional changes in the flow-carrying pipes or housings can be compensated for. In comparison to a single honeycomb body that is intended to represent such a change in cross-section, the individual disk elements are simple parts that are easy to manufacture. In particular, a metallic honeycomb body with a along the The length of the cross-section is very difficult to produce from a production point of view.
  • the disk elements are fixed ge compared to the housing and / or are firmly connected to one another is particularly advantageous.
  • the individual disk elements can be fixed to the housing or fixed to one another.
  • the fixing relative to the housing is particularly advantageous.
  • the disk elements are arranged in a section of the housing which has a cross section which widens or narrows in the flow direction.
  • a catalytic converter of this type is particularly suitable for installation in areas of the exhaust line, which basically basically serves to guide the flow of the exhaust gas, such as diffusers, funnels or bends, in which the exhaust gas stream is concentrated or fanned out.
  • Conventional known catalysts which are formed from a single matrix or a single honeycomb body, cannot be adapted to such an installation location, or can be adapted only with particularly great effort.
  • the catalyst can be installed particularly well from a plurality of disk elements. The dimensions of the individual disk elements can be influenced in such a way that they are optimally adapted to the available installation space.
  • a preferred exemplary embodiment is characterized in that the disk elements are arranged in a section of the housing in which the direction of flow of the exhaust gas flowing in the housing is changed.
  • the catalyst from individual disc elements can in particular also be adapted well to housing parts which serve to deflect the gas stream.
  • the disc elements can, for example, be set at an angle to one another and thus inserted into a pipe bend. The space otherwise only used for deflecting the exhaust gas can thus also be effectively used for the catalytic treatment of the exhaust gas.
  • the individual disk elements are arranged at an angle to one another. Arranging the disc elements with a certain angle of attack with respect to one another is advantageous if the disc elements are arranged, for example, in a pipe bend. The adjustment favors the flow and reduces the pressure loss.
  • At least one of the disk elements is designed to be electrically heatable.
  • the exhaust gas temperature can be increased by the electrical heating of at least one disk element, as a result of which the conversion of the exhaust gas is accelerated.
  • the first disk element or the last disk element viewed in the flow direction can be heated. In the case of electrical heating, in particular, care must be taken to ensure that the heated pane element is electrically insulated from the unheated pane elements and other electrically conductive structures.
  • the catalyst formed from a plurality of disk elements is followed by one or more further catalysts.
  • the catalyst according to the invention can preferably be used in conjunction with other catalysts of conventional design.
  • further catalysts can be installed in succession in a housing, as is generally known.
  • the catalyst according to the invention can preferably be arranged in the areas of the exhaust pipe described above, in order to additionally fill the otherwise catalytically unused installation space.
  • the length of the individual disc elements is between 5 mm and 20 mm in the flow direction.
  • the length of the individual disk elements preferably corresponds to the length of the flow channels formed in the disk elements, according to which a laminar boundary layer is normally completely built up in accordance with the known rules of thumb for heat transfer. The ideal length therefore also strongly depends on the mass flow and the respective cell density.
  • the catalytic converter is formed from at least two disk elements arranged one behind the other and a maximum of ten disk elements arranged one behind the other.
  • the pressure loss caused by the disc elements must be taken into account, which is why the maximum number of disc elements should not exceed ten.
  • the diameter of the disk elements arranged one behind the other in the flow direction increases, the diameter of the disk element (n + 1) being 1.5 times as large as the diameter of the disk element (s).
  • the amount by which the diameter of the (n + 1) disc element is larger than the diameter of the preceding disc element (s) is determined by the geometric configuration, in particular the angle of the cone, the cone housing and the distance between the disc elements.
  • the geometry of the disc element results from the optimal value for the disc length, the disc spacing (in terms of the optimum of pressure loss and equal flow distribution) in combination with the specified angle of Cone.
  • the optimum here is regularly between 10 mm and 20 mm.
  • the distance between two directly adjacent disk elements is between 0.5 times and 1.5 times the length of the disk elements in the flow direction.
  • the optimal distance between the disc elements is between 10 mm and 20 mm, ideally the distance is 15 mm.
  • the number of flow channels per defined cross-sectional area (cell density) of disks benelement to disc element is different.
  • the distribution of the exhaust gas flow can also be positively influenced by different cell densities. Different cell densities can also influence the pressure loss as required.
  • influence on the back pressure distribution or the flow equalization can be influenced.
  • the back pressure distribution or the uniform flow distribution can be influenced in such a way that the length of the disk element can be shortened.
  • the back pressure distribution or the flow equalization distribution can be kept constant. This can improve the overall effectiveness of the catalyst.
  • the disk elements bear directly against one another and are connected to one another at least on a section of the outer circumference. This is advantageous, for example, if the disk elements are arranged in a pipe bend. The disk elements can be leaned against one another at a section of their outer circumference and positioned at an angle to one another, as a result of which the curvature of the pipe bend can be imaged, the disk elements being arranged compactly at the same time.
  • FIG. 1 shows two views of an expanding Rohrab section, wherein a uniformly expanding pipe section is shown in the upper region and a gradually expanding pipe section in the lower region,
  • Fig. 2 shows two perspective views of pipe bends, wherein an inventive Kata analyzer can be used in the lower pipe bend, and
  • Fig. 3 is a sectional view through a gradually widening pipe section with a catalyst according to the invention, the lower disk element being electrically heated.
  • Figure 1 shows two views of a tapered pipe section.
  • a pipe section 1 is shown, as is usually used to connect two exhaust pipes of different diameters.
  • the pipe section 1 shown has only a flow-guiding function in that it leads the exhaust gas flow from an area of larger diameter to an area of smaller diameter.
  • the pipe section 1 is formed only by the limiting wall and has no elements for the catalytic treatment of the gas flow from inside.
  • a pipe section 2 is shown, which also tapers.
  • the pipe section 2 tapers stepwise and not continuously like the pipe section 1 shown above.
  • several areas 3 are formed, each of which has a constant diameter. These areas 3 are ring-shaped and serve to accommodate individual disk elements of a catalytic converter for exhaust gas aftertreatment.
  • a catalytic treatment of the exhaust gas flowing through the pipe section 2 can thus also be implemented in the pipe section 2.
  • the disc elements that can be used in the areas 3 are formed by metallic honeycomb bodies that have a catalytically active coating. Exhaust gas which flows through the pipe section 2 thus flows successively through the disk elements in the regions 3 and the intermediate spaces 4 which are formed between the disk elements.
  • FIG. 2 shows a pipe bend 5 in the upper area for deflecting an exhaust gas flow.
  • the pipe bend 5 has a continuous wall profile and corresponds to a pipe bend as is known from the prior art.
  • a pipe bend 6 which is designed to hold a catalytic converter according to the invention with several disk elements.
  • sections 7 are formed in sections in the pipe bend 6, which have a constant diameter and are set at an angle to one another are.
  • the areas 7 are designed to receive one of the disk elements.
  • the arrangement of a plurality of disk elements, each with a plurality of flow channels through which flow can occur results in repeated inflow and outflow of the exhaust gas, as a result of which the heat transport is improved and an improved flow velocity distribution and concentration distribution is achieved.
  • a basically flow-guiding component can also have an exhaust gas conversion function.
  • the space required for funnels or pipe bends is thus used twice, which improves the overall efficiency of the exhaust gas aftertreatment device.
  • FIG. 3 shows a sectional view through a tapering pipe section 8 of a device for exhaust gas aftertreatment, with several disk elements 9 of a catalyst according to the invention being inserted into the pipe section 8.
  • the disc elements 9 are arranged spaced apart from one another in the flow direction and are each arranged in regions of constant cross section.
  • the bottom disk element 9 is designed such that it can be heated electrically.
  • the lowest disc element 9 is spaced apart by spacers in the form of pins 10 from the disc element 9 lying above it. These also serve also the electrical insulation of the disc elements 9 zuei nander.
  • the electrically heatable disk element 9 can also be electrically insulated from the housing forming the tube section 8.
  • an electrical contact of the heatable disc element 9 is shown.
  • the design of the electrical contact corresponds, for example, to the known solutions from the prior art.
  • the disk elements can also be adapted to the inner contour of the flow-guiding component such that they assume a firmly defined fit during assembly.
  • the disk elements can be adapted to the angle of the inner wall, so that they can slide into the pipe section until the disk element is in constant contact with the inner wall in a certain position.
  • FIGS. 1 to 3 have, in particular, no restrictive character and serve to clarify the inventive concept.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un dispositif de traitement catalytique de gaz d'échappement, le dispositif comportant un chemin d'écoulement qui est limité par un carter et qui peut être traversé, d'une ouverture d'entrée vers une ouverture de sortie, le long d'une direction d'écoulement, un catalyseur étant disposé à l'intérieur du chemin d'écoulement, lequel catalyseur est formé d'une pluralité d'éléments de disque (9), les éléments de disque (9) étant disposés en série dans la direction d'écoulement du gaz d'échappement et les éléments de disque (9) présentant respectivement une pluralité de canaux pouvant être traversés et une couche marginale catalytique active, les éléments de disque (9) étant disposés les uns par rapport aux autres de telle sorte que des espaces intermédiaires (4) se forment au moins partiellement entre les éléments de disque (9) directement adjacents les uns par rapport aux autres, les espaces intermédiaires (4) étant exempts d'éléments catalytiquement actifs.
PCT/EP2019/075441 2018-09-27 2019-09-23 Dispositif de post-traitement de gaz d'échappement Ceased WO2020064579A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018216664 2018-09-27
DE102018216664.1 2018-09-27

Publications (1)

Publication Number Publication Date
WO2020064579A1 true WO2020064579A1 (fr) 2020-04-02

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712087A1 (de) * 1997-03-22 1998-09-24 Porsche Ag Adsorber-Katalysator-Kombination für Brennkraftmaschinen
US6623704B1 (en) * 2000-02-22 2003-09-23 Delphi Technologies, Inc. Apparatus and method for manufacturing a catalytic converter
US20040213707A1 (en) * 2002-04-22 2004-10-28 Holger Prommersberger Catalyst for an internal combustion engine
EP2314836A1 (fr) * 2008-06-13 2011-04-27 Toyota Jidosha Kabushiki Kaisha Appareil d'épuration des gaz d'échappement pour moteur à combustion interne
US20140366513A1 (en) * 2012-03-02 2014-12-18 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Device for exhaust-gas purification and motor vehicle having the device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712087A1 (de) * 1997-03-22 1998-09-24 Porsche Ag Adsorber-Katalysator-Kombination für Brennkraftmaschinen
US6623704B1 (en) * 2000-02-22 2003-09-23 Delphi Technologies, Inc. Apparatus and method for manufacturing a catalytic converter
US20040213707A1 (en) * 2002-04-22 2004-10-28 Holger Prommersberger Catalyst for an internal combustion engine
EP2314836A1 (fr) * 2008-06-13 2011-04-27 Toyota Jidosha Kabushiki Kaisha Appareil d'épuration des gaz d'échappement pour moteur à combustion interne
US20140366513A1 (en) * 2012-03-02 2014-12-18 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Device for exhaust-gas purification and motor vehicle having the device

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