EP1198666A1 - PROCEDE POUR ACCROITRE LE TAUX DE CONVERSION DE NO x DE CATALYSEURS ACCUMULATEURS DE NO x ALTERES - Google Patents

PROCEDE POUR ACCROITRE LE TAUX DE CONVERSION DE NO x DE CATALYSEURS ACCUMULATEURS DE NO x ALTERES

Info

Publication number
EP1198666A1
EP1198666A1 EP00929557A EP00929557A EP1198666A1 EP 1198666 A1 EP1198666 A1 EP 1198666A1 EP 00929557 A EP00929557 A EP 00929557A EP 00929557 A EP00929557 A EP 00929557A EP 1198666 A1 EP1198666 A1 EP 1198666A1
Authority
EP
European Patent Office
Prior art keywords
lean
catalyst
regeneration
undamaged
exhaust gas
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
EP00929557A
Other languages
German (de)
English (en)
Inventor
Ekkehard Pott
Axel Lang
Hermann Hahn
Frank Schulze
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1198666A1 publication Critical patent/EP1198666A1/fr
Ceased legal-status Critical Current

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
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
    • F02D41/028—Desulfurisation of NOx traps or adsorbent
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/04—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by adding non-fuel substances to combustion air or fuel, e.g. additives
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/10—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying inlet or exhaust valve timing
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/04—Sulfur or sulfur oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus

Definitions

  • the fresh NO x storage catalytic converter With raw NO x emissions of around 1200 ppm, the fresh NO x storage catalytic converter only reaches this threshold value after around 100 seconds, while it is reached after around 80 seconds in the case of the catalytic converter which is partially damaged by thermal aging and sulfur poisoning, which leads to a corresponding reduction in the Lean phase leads to 20% and correspondingly more frequent NO x regeneration.
  • the possible lean operating time at this operating point is reduced to about 40 seconds, so that the NO x regeneration must take place 2.5 times as often as with the fresh catalyst.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un procédé pour compenser le vieillissement ou l'altération de catalyseurs accumulateurs de NOx en augmentant spécifiquement le taux de conversion de NOx, tout en maintenant une valeur-seuil déterminée après consommation excédentaire, procédé consistant à prendre, en fonction du degré d'altération reconnu, les mesures suivantes, isolément ou en combinaison, afin que le catalyseur puisse être utilisé plus longtemps sans avoir à le remplacer : modification de la période d'appauvrissement ou d'enrichissement jusqu'à ce que la régénération de NOx ou la désulfatation soit initiée ou terminée ; modifier en permanence ou de façon variable en fonction du temps, la valeur lambda d'un catalyseur frais accumulateur de NOx pendant une régénération ou une désulfatation à ± 0,25 maximum ; modifier le taux de recirculation des gaz d'échappement, le point d'allumage, le début d'injection, la durée d'injection, la position de la soupape d'inversion, les temps de commande des soupapes, les pressions de compression et/ou d'admission, en vue de réduire l'émission brute de NOx appauvri, tout en maintenant des conditions limites pour la température des gaz d'échappement, le débit-volume des gaz d'échappement et le taux d'émission HC ou CO ; extension du régime de fonctionnement avec lambda = 1 dans les domaines du champ caractéristique dans lesquels un catalyseur non altéré peut fonctionner en régime appauvri.
EP00929557A 1999-06-09 2000-05-26 PROCEDE POUR ACCROITRE LE TAUX DE CONVERSION DE NO x DE CATALYSEURS ACCUMULATEURS DE NO x ALTERES Ceased EP1198666A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19926148A DE19926148A1 (de) 1999-06-09 1999-06-09 Verfahren zur Erhöhung der NOx-Umsatzrate von geschädigten NOx-Speicherkatalysatoren
DE19926148 1999-06-09
PCT/EP2000/004808 WO2000077371A1 (fr) 1999-06-09 2000-05-26 PROCEDE POUR ACCROITRE LE TAUX DE CONVERSION DE NOx DE CATALYSEURS ACCUMULATEURS DE NOx ALTERES

Publications (1)

Publication Number Publication Date
EP1198666A1 true EP1198666A1 (fr) 2002-04-24

Family

ID=7910583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00929557A Ceased EP1198666A1 (fr) 1999-06-09 2000-05-26 PROCEDE POUR ACCROITRE LE TAUX DE CONVERSION DE NO x DE CATALYSEURS ACCUMULATEURS DE NO x ALTERES

Country Status (4)

Country Link
EP (1) EP1198666A1 (fr)
JP (1) JP2003502554A (fr)
DE (1) DE19926148A1 (fr)
WO (1) WO2000077371A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4314089B2 (ja) * 2003-09-29 2009-08-12 トヨタ自動車株式会社 内燃機関の触媒制御装置及び触媒劣化判定装置
JP2006125247A (ja) * 2004-10-27 2006-05-18 Hitachi Ltd エンジンの排気ガス浄化方法及び排気ガス浄化装置
US8112988B2 (en) * 2006-03-16 2012-02-14 Ford Global Technologies, Llc System and method for desulfating a NOx trap
DE102008025520B4 (de) * 2008-05-28 2011-06-09 Ford Global Technologies, LLC, Dearborn Verfahren zum Betreiben einer Abgasnachbehandlungsanordnung, sowie Abgasnachbehandlungsanordnung
DE102010050406A1 (de) 2010-11-04 2012-05-10 Daimler Ag Kraftfahrzeug-Brennkraftmaschine und Betriebsverfahren für eine Kraftfahrzeug-Brennkraftmaschine
DE102010060992A1 (de) * 2010-12-02 2012-06-06 Fev Gmbh Ladedruckgeführtes Regelverfahren für eine Brennkraftmaschine
DE112015005082A5 (de) 2014-11-10 2017-07-27 Fev Gmbh Verfahren zum Betreiben einer Verbrennungskraftmaschine mit einem NOx-Speicherkatalysator
GB2538961B (en) * 2015-06-01 2017-10-11 Ford Global Tech Llc A method of adaptively controlling purging of a lean NOx trap
CN112523848A (zh) * 2020-10-29 2021-03-19 广西玉柴机器股份有限公司 一种燃油硫量的处理方法及相关装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0733786A2 (fr) * 1995-03-24 1996-09-25 Toyota Jidosha Kabushiki Kaisha Dispositif d'épuration de gaz d'échappement pour moteurs à combustion interne
US5778666A (en) * 1996-04-26 1998-07-14 Ford Global Technologies, Inc. Method and apparatus for improving engine fuel economy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3301093B2 (ja) * 1991-11-12 2002-07-15 トヨタ自動車株式会社 内燃機関の排気ガス浄化装置
JP3114414B2 (ja) * 1993-03-12 2000-12-04 日産自動車株式会社 内燃機関の空燃比制御装置
JP2827954B2 (ja) * 1995-03-28 1998-11-25 トヨタ自動車株式会社 ＮＯｘ 吸収剤の劣化検出装置
US6212880B1 (en) * 1996-09-20 2001-04-10 Hitachi, Ltd. Engine control device
DE19800665C1 (de) * 1998-01-10 1999-07-01 Degussa Verfahren zum Betreiben eines Stickoxid-Speicherkatalysators

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0733786A2 (fr) * 1995-03-24 1996-09-25 Toyota Jidosha Kabushiki Kaisha Dispositif d'épuration de gaz d'échappement pour moteurs à combustion interne
US5778666A (en) * 1996-04-26 1998-07-14 Ford Global Technologies, Inc. Method and apparatus for improving engine fuel economy

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0077371A1 *

Also Published As

Publication number Publication date
JP2003502554A (ja) 2003-01-21
WO2000077371A1 (fr) 2000-12-21
DE19926148A1 (de) 2000-12-14

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