WO2004104388A1 - Installation d'epuration des gaz d'echappement pour moteur a combustion interne - Google Patents

Installation d'epuration des gaz d'echappement pour moteur a combustion interne Download PDF

Info

Publication number
WO2004104388A1
WO2004104388A1 PCT/EP2004/005319 EP2004005319W WO2004104388A1 WO 2004104388 A1 WO2004104388 A1 WO 2004104388A1 EP 2004005319 W EP2004005319 W EP 2004005319W WO 2004104388 A1 WO2004104388 A1 WO 2004104388A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
particle filter
catalyst
internal combustion
catalytic converter
Prior art date
Application number
PCT/EP2004/005319
Other languages
German (de)
English (en)
Inventor
Berthold Keppeler
Detlef Scharr
Original Assignee
Daimlerchrysler Ag
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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2004104388A1 publication Critical patent/WO2004104388A1/fr

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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/14—Combinations of different methods of purification absorption or adsorption, and filtering
    • 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
    • F01N3/08—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 invention relates to an exhaust gas purification system for an internal combustion engine according to the preamble of patent claim 1.
  • DE 197 18 727 C2 discloses a method for treating the exhaust gas of a diesel engine to reduce the particle emission by passing the diesel exhaust gas through two diesel exhaust gas catalysts connected in series in the form of honeycomb bodies with parallel flow channels, the wall surfaces of which are catalytically active Coating are provided.
  • the upstream first catalyst has a cell density of less than 40 to 80 flow channels per square centimeter, while the cell density of the downstream second catalyst is greater than that of the first catalyst.
  • the object of the present invention is to provide an exhaust gas purification system for an internal combustion engine which allows honeycomb catalysts with very high cell densities to be used for the purification of diesel exhaust gases, since a further tightening of the exhaust gas limit values for diesel engines not only reduces the particle emissions, but also requires a further improvement in the exhaust gas limit values for gaseous pollutants.
  • an exhaust gas purification system for an internal combustion engine for this purpose, which, viewed in the flow direction of the exhaust gas, has a particle filter close to the engine and at least one catalyst downstream of the particle filter, in which the at least one catalyst arranged downstream of the particle filter has a cell density range of approximately 900 to 2000 cpsi, preferably approximately 900 to 1600 cpsi.
  • a further developed according to claim 2 emission control system is provided with a catalytic coating. Furthermore, the at least one catalytic converter arranged downstream of the particle filter is a NO x storage catalytic converter and / or an SCR catalytic converter.
  • the at least one catalytic converter arranged downstream of the particle filter has the functions of a NO x storage catalytic converter and an SCR catalytic converter.
  • the filter undergoes in the close-coupled mounting position higher operating temperatures, ie, it benefits from the so-called CRT effect (Continuous Regeneration Trap), the reaction between N0 X and carbon black. This leads to a permanent soot regeneration of the particle filter, whereby the frequency of the active filter regeneration can be significantly reduced.
  • CRT effect Continuous Regeneration Trap
  • all restrictions in the selection of catalysts and / or supports are eliminated, since the contaminants from the diesel exhaust gas from the upstream particle filter are eliminated.
  • more powerful high-cell catalysts can be used, which would otherwise be added quickly due to the particle emissions described above.
  • Fig. 4 is a schematic representation of a third embodiment of the invention.
  • FIG. 1 shows an arrangement for exhaust gas aftertreatment from the prior art.
  • Particle filters and catalysts are used in combination in the exhaust gas of internal combustion engines.
  • the particle filter 1 the activity of which is temperature-independent, is installed remotely from the engine and others Catalysts A, B, C to reduce the gaseous pollutants that require higher temperatures for their activities, as close to the engine as possible.
  • This arrangement results in the catalytic converters starting early after the cold start.
  • the cell density of the catalysts is limited here by the particles from the exhaust gas in order to avoid clogging of the cells.
  • the arrangement for exhaust gas aftertreatment according to the invention in FIG. 2 shows a particle filter 1 arranged close to the engine.
  • the particle filter 1 can be arranged either in the exhaust manifold or before or after the exhaust gas turbocharger of the diesel engine.
  • the particle filter 1 can be regenerated, and in the case of soot separation in the diesel engine exhaust line, the regeneration by the oxidation of the soot either by nitrogen dioxide (N0 2 ) at a temperature above about 200 ° C. or with air or oxygen (0 2 ) eg temperatures above 500 ° C or by injection of an additive (eg a cerium compound).
  • N0 2 nitrogen dioxide
  • air or oxygen eg temperatures above 500 ° C
  • an additive eg a cerium compound
  • At least one catalyst 2, 3, 4 is arranged downstream of the particle filter 1 and has a cell density range of approximately 900 to 2000 cpsi, preferably a cell density range of approximately 900 to 1600 cpsi.
  • Metal, but preferably ceramic, catalysts are used for exhaust gas aftertreatment.
  • the catalysts used in the embodiment of 2 are preferably a NO x storage catalytic converter (NSK) (2) or an SCR catalytic converter (3).
  • FIG. 3 shows an example of a variant of the arrangement for exhaust gas aftertreatment from FIG. 1, for the sake of clarity the same reference numerals being used for identical or equivalent components and in this respect reference can be made to the description above for FIG. 1. Otherwise, the advantages mentioned in FIG. 2 and in the general part of the description also apply to the embodiment according to the invention in FIG. 3 and all the embodiments mentioned below.
  • 3 includes an NO x storage catalytic converter (NSK) (2) and then an SCR catalytic converter (3) in the exhaust gas flow direction downstream of an internal combustion engine, downstream of the particle filter 1 arranged close to the engine. The order can also be reversed, so that the SCR catalytic converter (3) is arranged in front of the NO x storage catalytic converter (NSK) (2).
  • FIG. 4 A further variant according to the invention is shown in FIG. 4, in which an integrated exhaust gas catalytic converter unit (4) with NO x storage catalytic converter (NSK) and SCR catalytic converter function is arranged behind the particle filter 1.
  • NNK NO x storage catalytic converter
  • SCR catalytic converter function is arranged behind the particle filter 1.

Landscapes

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

Abstract

L'invention concerne une installation d'épuration des gaz d'échappement pour moteur à combustion interne, cette installation comprenant, dans le sens de l'écoulement des gaz d'échappement et proche du moteur, un filtre à particules (1) et, en aval de ce filtre à particules (1), au moins un catalyseur (2, 3, 4), lequel (2, 3, 4) comporte une zone de densité cellulaire d'environ 900 à 2000 cpsi.
PCT/EP2004/005319 2003-05-23 2004-05-18 Installation d'epuration des gaz d'echappement pour moteur a combustion interne WO2004104388A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003123385 DE10323385B4 (de) 2003-05-23 2003-05-23 Abgasreinigungsanlage für eine Brennkraftmaschine
DE10323385.7 2003-05-23

Publications (1)

Publication Number Publication Date
WO2004104388A1 true WO2004104388A1 (fr) 2004-12-02

Family

ID=33461850

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/005319 WO2004104388A1 (fr) 2003-05-23 2004-05-18 Installation d'epuration des gaz d'echappement pour moteur a combustion interne

Country Status (2)

Country Link
DE (1) DE10323385B4 (fr)
WO (1) WO2004104388A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRE20050127A1 (it) 2005-11-11 2007-05-12 Ufi Filters Spa Impianto per la depurazione dei gas di scarico emessi dai motori a combustione interna

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806062A1 (de) * 1998-02-13 1999-08-19 Siemens Ag Reduktionskatalysator und Verfahren zur Reinigung dieselmotorischen Abgases
WO2001096717A1 (fr) * 2000-06-16 2001-12-20 Johnson Matthey Public Limited Company Reacteur destine a traiter des gaz d'echappement
WO2002081880A1 (fr) * 2001-04-03 2002-10-17 Ngk Insulators,Ltd. Structure en nid d'abeilles et son ensemble
US20030056499A1 (en) * 2001-07-03 2003-03-27 Klaus Binder Exhaust-gas aftertreatment device with nitrogen oxide storage catalytic converter, and operating method therefor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0590814B1 (fr) * 1992-09-28 1996-12-18 Ford Motor Company Limited Système de contrÔle d'émission de particules et de gaz d'échappement
DE19718727C2 (de) * 1997-05-02 2001-01-04 Degussa Verfahren zur Behandlung des Abgases eines Dieselmotors zur Verminderung der Partikelemission
DE19955324A1 (de) * 1999-11-17 2001-05-23 Volkswagen Ag Vorrichtung und Verfahren zum Reduzieren von schädlichen Bestandteilen im Abgas einer Brennkraftmaschine, insbesondere einer Diesel-Brennkraftmaschine
DE10010013A1 (de) * 2000-03-02 2001-09-06 Still Gmbh Fahrzeug mit einer Brennkraftmaschine und mindestens einer elektrischen Maschine
DE10118327A1 (de) * 2001-04-12 2002-10-17 Emitec Emissionstechnologie Abgassystem

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806062A1 (de) * 1998-02-13 1999-08-19 Siemens Ag Reduktionskatalysator und Verfahren zur Reinigung dieselmotorischen Abgases
WO2001096717A1 (fr) * 2000-06-16 2001-12-20 Johnson Matthey Public Limited Company Reacteur destine a traiter des gaz d'echappement
WO2002081880A1 (fr) * 2001-04-03 2002-10-17 Ngk Insulators,Ltd. Structure en nid d'abeilles et son ensemble
EP1375854A1 (fr) * 2001-04-03 2004-01-02 Ngk Insulators, Ltd. Structure en nid d'abeilles et son ensemble
US20030056499A1 (en) * 2001-07-03 2003-03-27 Klaus Binder Exhaust-gas aftertreatment device with nitrogen oxide storage catalytic converter, and operating method therefor

Also Published As

Publication number Publication date
DE10323385B4 (de) 2006-02-02
DE10323385A1 (de) 2004-12-23

Similar Documents

Publication Publication Date Title
EP1600612B1 (fr) Procédé pour la séparation d'oxydes d'azote et de particules de suie d'un gaz d'échappement pauvre de moteur à combustion et système de purification de gaz d'échappement pour cela
EP2183471B1 (fr) Post-traitement de gaz d'echappement en amont d'un turbocompresseur
WO2002100519A1 (fr) Installation d'epuration des gaz d'echappement dotee d'un dispositif d'alimentation en agent de reduction
DE102011050788A1 (de) Abgasnachbehandlungsvorrichtung und -verfahren für einen Ottomotor
EP1179125B1 (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
DE102005025045A1 (de) Abgasanlage
EP3134622B1 (fr) Systeme modulaire de construction et methode de production pour un module de catalysateur
DE102008026191A1 (de) Kraftfahrzeug mit Brennkraftmaschine und einer Abgasnachbehandlungseinrichtung sowie Verfahren zur Partikel- und Stickoxidverminderung
DE102012023049A1 (de) SCR-Abgasnachbehandlungseinrichtung sowie Kraftfahrzeug mit einer solchen
DE102015212788A1 (de) Katalytisch aktives Partikelfilter
DE102010055147A1 (de) Vier-Wege-Katalysator, seine Verwendung sowie Fahrzeug mit einem solchen
DE102015013837A1 (de) Abgasreinigungssystem und Abgasreinigungsverfahren
DE102009044776A1 (de) Verfahren zum Reinigen von in Abgas enthaltenem Stickoxid und ein das Verfahren ausführendes Abgassystem
EP1101908B1 (fr) Dispositif et méthode servant à limiter la quantité de composants nocifs presents dans les gaz d'échappement d'un moteur à combustion interne, en particulier d'un moteur à combustion interne Diesel
EP3126646A2 (fr) Procédé de régénération pour des systèmes de post-traitement des gaz d'échappement
DE102010033689A1 (de) Abgasnachbehandlungssystem mit katalytisch aktivem Wall-Flow-Filter mit NOx-Speicherfunktion vor Katalysator mit gleicher Speicherfunktion
DE102010033688A1 (de) Abgasnachbehandlungssystem mit katalytisch aktivem Wall-Flow-Filter mit Speicherfunktion vor Katalysator mit gleicher Speicherfunktion
EP1251248A1 (fr) Méthode et dispositif pour retirer les particules de suie des gaz d'échappement d'un moteur diesel
DE102007035937A1 (de) Abgasnachbehandlungsanlage und Verfahren zum Behandeln von Abgas
DE102017118214A1 (de) Abgasnachbehandlungssystem sowie Verfahren zur Abgasnachbehandlung eines Verbrennungsmotors
DE10323385B4 (de) Abgasreinigungsanlage für eine Brennkraftmaschine
DE102008019814A1 (de) Abgasreinigungskörper und Brennkraftmaschine mit Abgasreinigungskörper
EP1512850A1 (fr) Filtre à particules
EP2699770A1 (fr) Filtre à particules pourvu d'un revêtement catalytique
DE102017222253B4 (de) Verfahren zum Betrieb einer Abgasnachbehandlungsvorrichtung eines Kraftfahrzeugs

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase