EP1882090A1 - Systeme d'echappement comportant deux unites de traitement des gaz d'echappement - Google Patents

Systeme d'echappement comportant deux unites de traitement des gaz d'echappement

Info

Publication number
EP1882090A1
EP1882090A1 EP06723523A EP06723523A EP1882090A1 EP 1882090 A1 EP1882090 A1 EP 1882090A1 EP 06723523 A EP06723523 A EP 06723523A EP 06723523 A EP06723523 A EP 06723523A EP 1882090 A1 EP1882090 A1 EP 1882090A1
Authority
EP
European Patent Office
Prior art keywords
treatment unit
exhaust
exhaust gas
gas treatment
dynamic pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06723523A
Other languages
German (de)
English (en)
Other versions
EP1882090B1 (fr
Inventor
Rolf BRÜCK
Andreas Scheeder
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 Lohmar Verwaltungs GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
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 Emitec Gesellschaft fuer Emissionstechnologie mbH filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Publication of EP1882090A1 publication Critical patent/EP1882090A1/fr
Application granted granted Critical
Publication of EP1882090B1 publication Critical patent/EP1882090B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F01N3/24—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
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
    • 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
    • F01N2330/44—Honeycomb supports characterised by their structural details made of stacks of sheets, plates or foils that are folded in S-form
    • 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
    • F01N2330/48—Honeycomb supports characterised by their structural details characterised by the number of flow passages, e.g. cell density
    • 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]
    • 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 ; Methods of operation or control of catalytic converters
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents

Definitions

  • the subject matter of the present invention is an exhaust system for internal combustion engines with two exhaust gas treatment units.
  • exhaust emission limits are specified, which must be observed by motor vehicles or stationary internal combustion engines. Often these are relatively complex threshold systems, where, for example, not only one limit for one size but rather several limits must be met simultaneously. In order to comply with these limits, relatively complex exhaust gas reclamation operations are often required which require multiple combined exhaust gas purification components.
  • particulate filters require regeneration in which the soot particles collected by the filter are burned. This is done for example in the form of a continuous regeneration (CRT, continuous regeneration trap) with nitrogen dioxide (NO2). Since there is often not enough nitrogen dioxide in the exhaust gas flowing into the filter, it is known to provide an oxidation catalyst upstream of the particulate filter with which nitrogen monoxide (NO) is oxidized to nitrogen dioxide (NO 2).
  • CTR continuous regeneration trap
  • SCR selective catalytic reduction
  • NO x nitrogen oxides
  • reducing agents such as urea
  • the highest possible reaction rate in the second exhaust gas treatment component as a rule requires most efficient conversion in the first, first exhaust gas treatment component lying in the flow direction before the second exhaust gas treatment component.
  • the object of the invention is to propose an exhaust system with a first and a second exhaust treatment unit, in which the highest possible reaction rate in the second exhaust treatment component is achieved and at the same time the smallest possible volume of the exhaust gas treatment components is made possible.
  • the exhaust system of an internal combustion engine comprising a first exhaust treatment unit with a first dynamic pressure and a second exhaust treatment unit with a second dynamic pressure, wherein the first dynamic pressure is smaller than the second dynamic pressure, is characterized in that the first exhaust treatment unit at such a first distance In the flow direction upstream of the second exhaust gas treatment unit, a gas flow entering the first exhaust gas treatment unit is equalized in operation.
  • the back pressure in the flow direction before the exhaust gas treatment unit is influenced by the first dynamic pressure of the heat exchanger.
  • the internal combustion engine is in particular a diesel or gasoline engine, for example a diesel or Otto engine of a motor vehicle (for example a passenger car). car, a truck, a motorized two-wheeler, boat or aircraft) or a diesel or gasoline engine in stationary application.
  • a diesel or gasoline engine for example a diesel or Otto engine of a motor vehicle (for example a passenger car). car, a truck, a motorized two-wheeler, boat or aircraft) or a diesel or gasoline engine in stationary application.
  • honeycomb bodies for example ceramic or metallic honeycomb bodies, or else wire knit bodies, bodies made of metal foam or the like are suitable as exhaust gas treatment units.
  • Metallic honeycomb bodies may in particular be constructed from at least one at least partially structured metallic layer and optionally at least one substantially smooth layer, which are wound or stacked together and wound. The twisted or wound layers form permeable cavities, which are bounded by the layers.
  • the layers are in particular made of a high temperature corrosion resistant material, such as Al or Cr steel.
  • the layers may be interconnected, in particular cohesively, such as by a Hochtemperaturlötmaschinen vide.
  • Both the substantially smooth layers and the at least partially structured layers can have microstructures, guide surfaces, perforations and / or perforations, at least in some areas, which serve for even better mixing of the gas flow.
  • Under an exhaust gas treatment unit is understood in particular no heat exchanger.
  • the exhaust treatment units may also be formed in an exhaust gas recirculation line.
  • the equalization of the gas flow prior to entering the first exhaust gas treatment unit is advantageously carried out by forming the first exhaust gas treatment unit relatively close to the second exhaust gas treatment unit. This leads to an equalization of the gas flow already in the first exhaust gas treatment unit, so that here the conversion rate is improved because the cross section of the first exhaust gas treatment unit is more uniformly exposed to exhaust gas.
  • the volume of the first exhaust treatment unit can be reduced in comparison to a conventional structure at the same rate of conversion of the pollutants in the exhaust gas. Due to the much more efficient implementation rate of Pollutants also improves the conversion rate of the second exhaust gas purification unit, so that it may be smaller in size compared to conventional second exhaust gas purification units.
  • an exhaust treatment unit having a relatively high accumulation pressure may consist of a high-cell honeycomb body having, for example, a cell density of about 800 cpsi, 1000 cpsi or more.
  • the length of the cavities in a honeycomb body has an influence on the dynamic pressure, so that an exhaust gas treatment unit having a relatively small back pressure can be formed by a short honeycomb body and an exhaust gas treatment unit having a relatively large back pressure by a long honeycomb body.
  • the first distance is chosen such that the effect of the first dynamic pressure and the second dynamic pressure accumulate.
  • Cumulating means here in particular that the dynamic pressure present in front of the first exhaust gas treatment unit is greater than the first back pressure that the first exhaust gas treatment unit has as such, which therefore exists when only the first exhaust gas treatment unit is flown, without a second exhaust gas treatment unit being formed ,
  • the cumulation of the dynamic pressures advantageously leads to the exhaust gas, before it flows into the first exhaust gas treatment unit, having to overcome a back pressure which is greater than the first back pressure of the first exhaust gas treatment unit.
  • the dynamic pressure is even significantly greater than the first dynamic pressure.
  • the increase of the dynamic pressure causes a comparison Beist the flow of the first exhaust gas treatment unit and thus the gas flow through the first exhaust treatment unit and the second exhaust treatment unit.
  • a second distance of a gas inlet-side end face of the first exhaust gas treatment unit from a gas inlet-side end face of the second exhaust gas treatment unit is less than 60 mm, preferably less than 45 mm, particularly preferably less than 30 mm.
  • the expansion of the first exhaust gas treatment unit in the flow direction is less than 45 mm, preferably less than 35 mm, particularly preferably 25 mm or less.
  • the second exhaust treatment unit can also be chosen a smaller volume, for example, in the case that is designed as a second exhaust treatment unit, a particulate filter and the first exhaust treatment unit, an oxidation catalyst, the more uniform flow of the first exhaust treatment unit causes an improved supply of nitrogen dioxide and consequently a more uniform regeneration so that a smaller particulate filter volume is sufficient.
  • the first and / or the second exhaust gas treatment unit comprise at least one honeycomb body.
  • a honeycomb body can be used to create a first and / or second exhaust gas treatment unit whose properties, such as surface area, dynamic pressure, etc., can be very accurately predicted.
  • metallic or ceramic honeycomb bodies are suitable as honeycomb bodies.
  • particulate filter can be formed as a honeycomb body with at least partially porous channel walls and optionally channel terminations or corresponding baffles and openings.
  • the first distance between the first exhaust-gas treatment unit and the second exhaust-gas treatment unit is less than 15 mm, preferably less than 10 mm, particularly preferably less than 5 mm.
  • both exhaust gas treatment units in a common housing.
  • the exhaust treatment units may be held in corresponding beads of the housing by means of a flanging or the like.
  • the second exhaust gas treatment unit flush on a front side of the heat exchanger.
  • this can be achieved by providing perforations in the walls of the cavities in the last region, for example in the last 20% or 10% of the length of the first exhaust gas treatment unit.
  • the second exhaust gas treatment unit comprises a particle filter with alternately closed channels.
  • the duct walls it is also possible to allow the duct walls to end at different points in the region of the gas outlet-side end face of the first exhaust gas treatment unit or the gas inlet side end face of the second exhaust gas treatment unit, so that no smooth stimulus surface but a rugged face of the first and / or the second exhaust Treatment unit disfigured, which can also lead to cross flows, especially between adjacent channels.
  • At least the first exhaust gas treatment unit comprises a catalytically active coating.
  • the catalytically active coating comprises, for example, a ceramic washcoat which contains materials which catalyze the desired reactions, ie in particular reduce the reaction temperature of these reactions to such an extent that they run to a considerable extent at the temperatures in the exhaust gas recirculation line.
  • Suitable catalysts are in particular noble metals such as platinum, rhodium or the like.
  • An oxidation catalyst coating catalyzes in particular the oxidation of hydrocarbons (HC) or nitrogen oxides (NO x ).
  • the second exhaust gas treatment unit has a catalytically active coating.
  • the first exhaust treatment unit may comprise a hydrolysis catalyst, while the second exhaust treatment unit comprises an SCR catalyst.
  • the ratio of the first dynamic pressure to the second dynamic pressure is greater than 2, preferably greater than 10.
  • the second exhaust gas treatment unit comprises at least one of the following components:
  • All of these three possible second exhaust treatment units (a), (b) and (c) are components with a relatively high dynamic pressure.
  • An open particle filter is to be characterized in that a particle, in particular a soot particle, can in principle pass through it without being caught by a channel wall.
  • a closed particulate filter this is not possible, as this regularly alternately closed channels, so that in a subset channels the exhaust gas can only flow in, but not through a regular channel opening can leave the channel, but rather that the exhaust gas through the porous Walls of the filter must flow, whereby it enters another subset of channels, which in turn have no input-side free flow cross-section, but only one output-side free flow cross-section.
  • closed particulate filters in principle, it is not possible to break through a relatively large particle through the filter if it is intact, since the particle gets caught in the porous channel wall. In an open filter system this is possible in principle.
  • An open particle filter has porous regions in at least part of its walls.
  • the oxidation catalyst can be made smaller than when the distance between the two Abgasbehandmngshimen not selected according to the invention.
  • a closed P for example, a diesel particulate filter per se known type, as the second exhaust treatment unit and a honeycomb body is formed as the first exhaust gas treatment unit and the distance as small as possible, possibly even close to zero by applying the end face of the honeycomb body to the corresponding end of the particulate filter, is selected, it is advantageous to provide in the end region of the channel walls of the first exhaust treatment unit perforations and / or optionally baffles, which favor further mixing of the exhaust gas.
  • Another example is a high cell SCR coating honeycomb body second exhaust treatment unit, preceded by a low cell honeycomb body with a urea hydrolysis promoting coating.
  • Fig. 1 shows schematically an embodiment of an exhaust system according to the invention
  • FIG. 2 schematically shows a detail of the embodiment of an exhaust system according to the invention
  • 3 shows a cross section of a honeycomb body; and 4 shows schematically probability distributions of flow velocities.
  • FIG. 1 shows schematically a Ausf ⁇ hrangsbeispiel example of an exhaust gas system 1 according to the invention of an internal combustion engine 2, which comprises a first exhaust treatment unit 3 and a second exhaust treatment unit 4.
  • the first exhaust treatment unit 3 shows schematically a Ausf ⁇ hrangsbeispiel example of an exhaust gas system 1 according to the invention of an internal combustion engine 2, which comprises a first exhaust treatment unit 3 and a second exhaust treatment unit 4.
  • the first exhaust treatment unit 3 shows schematically a Ausf ⁇ hrangsbeispiel example of an exhaust gas system 1 according to the invention of an internal combustion engine 2, which comprises a first exhaust treatment unit 3 and a second exhaust treatment unit 4.
  • I gas treatment unit 3 is formed as a closed particle filter with alternately closed channels, while the second exhaust treatment unit 4 as a honeycomb body with a catalytically active coating, which catalyzes the conversion of nitrogen monoxide to nitrogen dioxide, without the invention being limited thereto.
  • the particle filter can be formed as a ceramic voilextrudate or also correspondingly from metallic layers.
  • the first exhaust gas treatment unit 3 has a first hydrodynamic dynamic pressure, while the second exhaust gas treatment unit 4 has a second dynamic pressure, which is greater than the first dynamic pressure.
  • the first exhaust gas treatment unit 3 is formed at such a first distance 5 upstream of the second exhaust gas treatment unit 4, so that during operation, a gas flow 6 symbolized by an arrow is homogenized in the first exhaust gas treatment unit 3.
  • the first distance 5 is here in particular less than 15 mm, preferably less than 10 mm, particularly preferably less than 5 mm.
  • the first 3 and second exhaust treatment unit 4 are designed so that at this first distance 5 to accumulate the effects of the first back pressure and the second back pressure, so that the flowing into the first exhaust treatment unit 3 exhaust gas must overcome a dynamic pressure which is greater than that first back pressure of the first exhaust treatment unit 3 as such. As explained above, this leads to an equalization of the gas flow 6, which flows into the first exhaust gas treatment unit 3.
  • a second distance 7 between a gas inlet-side end face 8 of the first exhaust gas treatment unit 3 and a gas inlet-side end face 9 of the second exhaust treatment unit 4 is selected according to the invention so that it comes to a homogenization of the flow in the first exhaust gas treatment unit 3.
  • the second distance 7 is less than 60 mm, preferably less than 45 mm, particularly preferably less than 30 mm.
  • short honeycomb bodies may be used as the first exhaust gas treatment unit 4, in particular an expansion 10 in the flow direction of approximately 20 to approximately 40 mm.
  • the first distance 5 is for example less than 15 mm, or even 5 mm or less.
  • the first distance 5 is selected so that the effect of the first dynamic pressure of the first exhaust treatment unit 3 and the second dynamic pressure of the second exhaust treatment unit 4 accumulate, so that the exhaust gas flowing into the first exhaust treatment unit 3 has to overcome a dynamic pressure that is larger , Preferably significantly greater than the second back pressure of the first exhaust treatment unit 3 alone.
  • FIG. 3 schematically shows an example of a honeycomb body 11 in cross section, which may be configured as a first and / or second exhaust gas treatment unit 4.
  • This honeycomb body 11 comprises a honeycomb structure 12 in a jacket tube 13.
  • the honeycomb structure 12 has cavities 14 which can be wetted or even flowed through, which are formed by substantially smooth layers 15 and at least partially structured layers 16.
  • At least one at least partially structured layer 16 and optionally at least one substantially smooth layer 15 are wound up or stacked and wound one or more stacks in the same direction or in opposite directions.
  • Substantially smooth layers 15 may have microstructures whose amplitude is smaller than the patterning amplitude of the at least partially structured layer 16.
  • Layers 15, 16 are preferably metallic layers, in particular sheet metal layers and / or metallic fiber layers, which are in particular made of high-temperature-resistant and corrosion-resistant material, such as For example, Al or Cr steels can be produced.
  • the layers 15, 16 may have microstructures, perforations, apertures and / or baffles.
  • the second probability distribution 18 is the probability distribution in a system according to the invention. It therefore relates to an exhaust system 1 of a first exhaust gas treatment unit 3 and a second exhaust treatment unit 4.
  • the second probability distribution 18 is wider, in particular has a greater width at half maximum height (fill width half maximum) than the first probability distribution 17. This is based on the equalization of the flow according to the invention.
  • the exhaust system 1 advantageously allows the formation of systems with two exhaust treatment units 3, 4, which are arranged one behind the other in the flow direction. Due to the flow equalization, the first 3 and / or the second exhaust treatment unit 4 can be made smaller. This applies, for example, if the first exhaust gas treatment unit 3 is an oxidation catalytic converter and a second exhaust gas treatment unit 4 is a particle filter. By equalizing the flow in the first exhaust gas treatment unit 3, the conversion rate is increased, so that first 3 and / or second exhaust treatment unit 4 can be made smaller. This saves considerable costs in the design of such systems. LIST OF REFERENCE NUMBERS

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)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

L'invention concerne un système d'échappement (1) de moteur à combustion interne (2), comprenant une première unité de traitement de gaz d'échappement (3) avec une première pression dynamique et une seconde unité de traitement des gaz d'échappement (4) avec une seconde pression dynamique. La première pression dynamique est inférieure à la seconde pression dynamique. Le système d'échappement (1) selon l'invention permet de concevoir de manière avantageuse des systèmes à deux unités de traitement des gaz d'échappement (3, 4), qui sont disposées l'une à la suite de l'autre dans le sens d'écoulement. L'homogénéisation de l'écoulement permet de concevoir la première et/ou la seconde unité de traitement des gaz d'échappement (4) de manière plus réduite. Cette condition s'applique par exemple si la première unité de traitement des gaz d'échappement (3) est un pot catalytique à oxydation et la seconde unité de traitement des gaz d'échappement (4), un filtre à particules. L'homogénéisation de l'écoulement dans la première unité de traitement des gaz d'échappement (3) permet d'augmenter le taux de conversion, de sorte que la première (3) et la seconde unité de traitement des gaz d'échappement (4) puissent être conçues de manière plus réduite, ce qui permet d'éviter des dépenses considérables lors de la conception de tels systèmes.
EP06723523A 2005-03-24 2006-03-17 Systeme d'echappement comportant deux unites de traitement des gaz d'echappement Active EP1882090B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005014265A DE102005014265A1 (de) 2005-03-24 2005-03-24 Abgasanlage mit zwei Abgasbehandlungseinheiten
PCT/EP2006/002488 WO2006100003A1 (fr) 2005-03-24 2006-03-17 Systeme d'echappement comportant deux unites de traitement des gaz d'echappement

Publications (2)

Publication Number Publication Date
EP1882090A1 true EP1882090A1 (fr) 2008-01-30
EP1882090B1 EP1882090B1 (fr) 2011-10-05

Family

ID=36370833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723523A Active EP1882090B1 (fr) 2005-03-24 2006-03-17 Systeme d'echappement comportant deux unites de traitement des gaz d'echappement

Country Status (5)

Country Link
US (1) US7597859B2 (fr)
EP (1) EP1882090B1 (fr)
JP (1) JP2009530521A (fr)
DE (1) DE102005014265A1 (fr)
WO (1) WO2006100003A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3179065A1 (fr) * 2015-12-08 2017-06-14 Jumbomaw Technology Co., Ltd. Convertisseur catalytique
US9810125B2 (en) 2015-12-08 2017-11-07 Jumbomaw Technology Co., Ltd. Catalytic converter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090100809A1 (en) * 2007-10-23 2009-04-23 Baldwin Jr Donald W Filter assembly for removing particulates in an exhaust gas in a fuel engine
US20110030325A1 (en) * 2009-08-06 2011-02-10 Glanfield Ian S Air filter
US10387506B2 (en) * 2013-03-14 2019-08-20 Eharmony, Inc. Systems and methods for online matchmaking
EP3511541B1 (fr) 2018-01-15 2021-11-03 AM Group Redback AB Convertisseur catalytique pour voitures classiques

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE581190C (de) * 1930-10-21 1933-07-22 Wilhelm Widmann Rollfilmkamera mit Abschneidvorrichtung
US3978567A (en) * 1973-03-19 1976-09-07 Chrysler Corporation Method of making a catalytic reactor for automobile
DE3407172C2 (de) * 1984-02-28 1986-09-04 Degussa Ag, 6000 Frankfurt Einrichtung zur Reinigung der Abgase von Dieselmotoren
JPS62273049A (ja) * 1986-05-21 1987-11-27 Toyota Motor Corp メタル担体触媒のメタル担体
JPS6318123A (ja) * 1986-07-10 1988-01-26 Fuji Heavy Ind Ltd 触媒コンバ−タ
JPH086582B2 (ja) * 1986-10-31 1996-01-24 マツダ株式会社 エンジンの排気ガス浄化用触媒装置
JPH0394836A (ja) * 1989-09-05 1991-04-19 Cataler Kogyo Kk 排気ガス浄化装置用の担体
DE4024942A1 (de) 1990-08-06 1992-02-13 Emitec Emissionstechnologie Monolithischer metallischer wabenkoerper mit variierender kanalzahl
JP2819864B2 (ja) * 1991-06-26 1998-11-05 トヨタ自動車株式会社 排気ガス浄化触媒用メタル担体
DE9210010U1 (de) 1992-07-25 1992-10-22 Heinrich Gillet GmbH & Co KG, 6732 Edenkoben Vorrichtung zum katalytischen Reinigen der Abgase von Verbrennungsmotoren
JPH07328452A (ja) * 1994-06-13 1995-12-19 Showa Aircraft Ind Co Ltd 触媒装置用金属担体
JPH10205325A (ja) * 1997-01-21 1998-08-04 Isuzu Motors Ltd ＮＯｘ還元除去用ハニカム触媒装置
DE19858974B4 (de) * 1998-12-19 2006-02-23 Daimlerchrysler Ag Verfahren zur katalytischen Umsetzung eines Ausgangsstoffes, insbesondere eines Gasgemisches
DE10003090A1 (de) * 2000-01-25 2001-07-05 Siemens Ag Durchströmbare Katalysatoranordnung sowie Verwendung der Katalysatoranordnung
US6919052B2 (en) * 2000-12-04 2005-07-19 Delphi Technologies, Inc. Catalytic converter
JP2003062472A (ja) * 2001-08-24 2003-03-04 Toyota Central Res & Dev Lab Inc ハニカム改質触媒体
SE524225C2 (sv) * 2002-02-15 2004-07-13 Volvo Technology Corp En anordning för behandling av ett gasflöde
DE10254764A1 (de) 2002-11-22 2004-06-03 Emitec Gesellschaft Für Emissionstechnologie Mbh Abgasanlage
DE10315593B4 (de) * 2003-04-05 2005-12-22 Daimlerchrysler Ag Abgasnachbehandlungseinrichtung und -verfahren
DE10321105A1 (de) * 2003-05-09 2004-12-02 Emitec Gesellschaft Für Emissionstechnologie Mbh Regeneration einer Partikelfalle
JP3896998B2 (ja) 2003-07-08 2007-03-22 トヨタ自動車株式会社 内燃機関の排気浄化装置
US7740809B2 (en) * 2006-02-15 2010-06-22 Hitachi Metals, Ltd. Exhaust gas-cleaning apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006100003A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3179065A1 (fr) * 2015-12-08 2017-06-14 Jumbomaw Technology Co., Ltd. Convertisseur catalytique
US9810125B2 (en) 2015-12-08 2017-11-07 Jumbomaw Technology Co., Ltd. Catalytic converter

Also Published As

Publication number Publication date
US20080008631A1 (en) 2008-01-10
JP2009530521A (ja) 2009-08-27
EP1882090B1 (fr) 2011-10-05
US7597859B2 (en) 2009-10-06
DE102005014265A1 (de) 2006-10-12
WO2006100003A1 (fr) 2006-09-28

Similar Documents

Publication Publication Date Title
EP1567247B1 (fr) Piege a particules muni d'une couche de fibres enduite
EP3134622B1 (fr) Systeme modulaire de construction et methode de production pour un module de catalysateur
EP1882090B1 (fr) Systeme d'echappement comportant deux unites de traitement des gaz d'echappement
EP1475522B1 (fr) Dispositif combiné de traitement/ d'amortissement de gaz d' échappement dans la ligne d'échappement d'un moteur à combustion interne
WO2006097131A1 (fr) Corps a nids d'abeilles pourvu de moyens d'introduction de reactif, procede correspondant et systeme associe
WO2000070202A1 (fr) Dispositif servant a limiter la quantite de composants nocifs presents dans les gaz d'echappement d'un moteur a combustion interne, en particulier d'un moteur a combustion interne diesel
EP1917423B1 (fr) Procede et dispositif pour traiter des gaz d'echappement de moteur a combustion interne
DE102004024685A1 (de) Katalysator-Trägerkörper für einen motornah einzusetzenden katalytischen Konverter
EP1527262B1 (fr) Filtre pour gaz d'echappement et procede d'epuration de gaz d'echappement
EP1861608B1 (fr) Systeme d'echappement comprenant une unite de traitement de gaz d'echappement et un echangeur thermique dans une conduite de retour de gaz d'echappement
DE102006022364A1 (de) Trägerkörper zur Abgasnachbehandlung mit disperser Katalysatoranordnung
DE102012209852A1 (de) Abgasreinigungssystem zur Anordnung in einem Abgasstrang eines Kraftfahrzeuges, insbesondere eines Dieselkraftfahrzeugs
EP2194251B1 (fr) Fixation autoporteuse pour corps de support de catalyseur
DE102008003044B4 (de) Abgasreinigungssystem zur verbesserten Abgasreinigung durch konvektives Mischen
DE102007042821A1 (de) Abgasreinigungsvorrichtung
DE102019130757A1 (de) Abgasanlage für eine Brennkraftmaschine
EP2740913A1 (fr) Système de traitement postérieur de gaz d'échappement
WO2007014637A1 (fr) Dispositif et procede de retraitement des gaz d'echappement d'un moteur a combustion interne
DE102006061693A1 (de) Abgasnachbehandlungsanordnung zur Behandlung von Abgasen einer Brennkraftmaschine
EP1431528A2 (fr) Dispositif de purification des gaz d'échappement
DE9314441U1 (de) Abgasschalldämpfer für Dieselmotoren insbesondere von Nutzfahrzeugen
WO1999001648A1 (fr) Catalyseur a alveoles et procede d'epuration d'un gaz d'echappement provenant d'un moteur a explosion fonctionnant a l'exces d'air
WO1999001646A1 (fr) Systeme de guidage de gaz d'echappement et procede de purification de gaz d'echappement emanant d'un moteur a combustion interne fonctionnant avec un excedent d'air
DE29808813U1 (de) Abgaskatalysator für Brennkraftmaschinen, insbesondere Ottomotoren
WO1999001647A1 (fr) Catalyseur a alveoles et procede d'epuration d'un gaz d'echappement provenant d'un moteur a explosion fonctionnant a l'exces d'air

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: 20070803

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

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

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 20091127

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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 ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502006010337

Country of ref document: DE

Effective date: 20111201

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: 20120706

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006010337

Country of ref document: DE

Effective date: 20120706

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120116

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006010337

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH, 53797 LOHMAR, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006010337

Country of ref document: DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006010337

Country of ref document: DE

Owner name: CONTINENTAL AUTOMOTIVE GMBH, DE

Free format text: FORMER OWNER: EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH, 53797 LOHMAR, DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20160331 AND 20160406

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

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

Ref country code: GB

Payment date: 20170322

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

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

Effective date: 20180317

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: 20180317

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006010337

Country of ref document: DE

Owner name: EMITEC TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006010337

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006010337

Country of ref document: DE

Owner name: EMITEC TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006010337

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502006010337

Country of ref document: DE

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

Ref country code: DE

Payment date: 20230331

Year of fee payment: 18

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230830

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006010337

Country of ref document: DE

Owner name: EMITEC TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 93055 REGENSBURG, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006010337

Country of ref document: DE

Representative=s name: KARO IP PATENTANWAELTE KAHLHOEFER ROESSLER KRE, DE

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

Ref country code: IT

Payment date: 20240327

Year of fee payment: 19

Ref country code: FR

Payment date: 20240321

Year of fee payment: 19