ES2174643T3 - Procedimiento y dispositivo para desulfatar un catalizador acumulador de nox. - Google Patents

Procedimiento y dispositivo para desulfatar un catalizador acumulador de nox.

Info

Publication number
ES2174643T3
ES2174643T3 ES99950565T ES99950565T ES2174643T3 ES 2174643 T3 ES2174643 T3 ES 2174643T3 ES 99950565 T ES99950565 T ES 99950565T ES 99950565 T ES99950565 T ES 99950565T ES 2174643 T3 ES2174643 T3 ES 2174643T3
Authority
ES
Spain
Prior art keywords
desulphation
procedure
catalyst
safety
admissibility
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.)
Expired - Lifetime
Application number
ES99950565T
Other languages
English (en)
Inventor
Ekkehard Pott
Gunnar Splisteser
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
Application granted granted Critical
Publication of ES2174643T3 publication Critical patent/ES2174643T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9495—Controlling the catalytic process
    • 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
    • F01N3/08—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
    • 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
    • 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
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • 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
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0811—NOx storage efficiency
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Procedimiento para desulfatar un catalizador acumulador de NOx (24) pospuesto a un motor de combustión interna (10) hecho funcionar con mezcla pobre, con los pasos siguientes: a.) determinar el estado de carga del catalizador acumulador de NOx (24) con azufre y comparar los valores de carga calculados con un primer valor umbral predeterminado para una carga de azufre máxima admisible; b.) realizar un control OBD del catalizador acumulador de NOx (24) para vigilar la actividad del catalizador; c.) en caso de sobrepasarse el valor umbral o detectarse una irregularidad de la actividad del catalizador, comprobar la admisibilidad de una desulfatación por comprobación del funcionamiento correcto de componentes relevantes para la seguridad y comprobación de la situación de marcha actual en cuanto a la observancia de parámetros de marcha predeterminados; d.) comprobar si, debido a la observancia de parámetros de desulfatación predeterminados, existe la posibilidad de realizar una desulfatación,eventualmente ajustar los parámetros de desulfatación necesarios e iniciar la desulfatación en caso de admisibilidad de tal medida; de lo contrario, repetir el paso c.) del procedimiento y/o eventualmente señalizar una perturbación detectada en el funcionamiento de uno de los componentes relevantes para la seguridad; y e.) realizar la desulfatación hasta alcanzar un grado de desulfatación predeterminado, ajustar condiciones de funcionamiento normales y retornar al paso a.) del procedimiento o realizar un corte prematuro o una interrupción de la desulfatación; en caso de que los resultados actuales de la prueba de admisibilidad del paso c.) del procedimiento lo requieran, retornar al paso a.) o c.) del procedimiento y eventualmente señalizar una perturbación detectada en el funcionamiento de uno de los componentes relevantes para la seguridad.
ES99950565T 1998-10-16 1999-09-29 Procedimiento y dispositivo para desulfatar un catalizador acumulador de nox. Expired - Lifetime ES2174643T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19847875A DE19847875A1 (de) 1998-10-16 1998-10-16 Verfahren und Vorrichtung zur De-Sulfatierung eines NOx-Speicherkatalysators

Publications (1)

Publication Number Publication Date
ES2174643T3 true ES2174643T3 (es) 2002-11-01

Family

ID=7884768

Family Applications (1)

Application Number Title Priority Date Filing Date
ES99950565T Expired - Lifetime ES2174643T3 (es) 1998-10-16 1999-09-29 Procedimiento y dispositivo para desulfatar un catalizador acumulador de nox.

Country Status (4)

Country Link
EP (1) EP1121519B1 (es)
DE (2) DE19847875A1 (es)
ES (1) ES2174643T3 (es)
WO (1) WO2000023702A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104564270A (zh) * 2013-10-17 2015-04-29 曼柴油机和涡轮机欧洲股份公司 用于内燃机的排气再处理系统的脱硫的方法

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910664A1 (de) 1999-03-11 2000-09-14 Volkswagen Ag Verfahren zur De-Sulfatierung eines NOx-Speicherkatalysators
DE10017203A1 (de) * 2000-04-06 2001-10-11 Audi Ag Verfahren zur Entschwefelung eines im Abgasstrang einer Diesel-Brennkraftmaschine angeordneten Oxidationskatalysators
EP1167710B1 (de) * 2000-07-01 2005-04-06 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zur Erhöhung einer Katalysatortemperatur
JP3552653B2 (ja) * 2000-07-24 2004-08-11 トヨタ自動車株式会社 内燃機関の還元剤供給装置の診断処理装置
DE10040010A1 (de) 2000-08-11 2002-02-21 Bosch Gmbh Robert Verfahren zur Entschwefelung eines Speichermediums
JP3791312B2 (ja) * 2000-09-07 2006-06-28 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP3558036B2 (ja) * 2000-12-21 2004-08-25 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE10107388B4 (de) * 2001-02-07 2012-08-02 Volkswagen Ag Verfahren zur Nachbehandlung eines Abgases einer magerlauffähigen Verbrennungskraftmaschine
JP2003065042A (ja) * 2001-08-30 2003-03-05 Toyota Motor Corp 内燃機関の排気浄化装置
DE10153901B4 (de) * 2001-10-12 2011-07-14 Volkswagen AG, 38440 Verfahren und Vorrichtung zur Entschwefelung eines einem Dieselmotor nachgeschalteten NOx-Speicherkatalysators
DE10156476B4 (de) * 2001-11-16 2012-10-31 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Verfahren zur Erkennung der fortschreitenden Verschwefelung eines NOx-Speicherkatalysators
JP3800080B2 (ja) * 2001-11-30 2006-07-19 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE10318214B4 (de) * 2003-04-22 2005-12-01 Siemens Ag Verfahren zur Ermittlung des Alterungszustandes eines Speicherkatalysators
DE10326932A1 (de) * 2003-06-16 2005-01-27 Audi Ag Verfahren zur Überprüfung eines Stickoxid-Sensors einer einen Stickoxid-Speicherkatalysator aufweisenden Brennkraftmaschine
JP4291650B2 (ja) * 2003-09-03 2009-07-08 トヨタ自動車株式会社 排気浄化装置
JP3915822B2 (ja) * 2005-09-07 2007-05-16 いすゞ自動車株式会社 排気ガス浄化システムの脱硫制御方法及び排気ガス浄化システム
FR2897104B1 (fr) * 2006-02-09 2008-05-16 Peugeot Citroen Automobiles Sa Systeme et procede d'elimination de sox (oxyde de soufre), superviseur pour ce systeme
FR2897102B1 (fr) * 2006-02-09 2012-06-01 Peugeot Citroen Automobiles Sa Systeme et procede d'elimination de sox (oxyde de soufre), et generateur de requetes pour ce systeme
JP4135757B2 (ja) * 2006-08-01 2008-08-20 トヨタ自動車株式会社 内燃機関の排気浄化システム
FR2909712B1 (fr) 2006-12-06 2009-02-27 Renault Sas Systeme et procede de regeneration d'un dispositif de piegeage catalytique d'oxydes d'azote
FR2930967B1 (fr) * 2008-05-06 2010-04-30 Renault Sas Systeme et procede d'optimisation de l'automate de declenchement des purges soufre
JP6132803B2 (ja) * 2014-04-07 2017-05-24 本田技研工業株式会社 内燃機関の排ガス浄化装置
GB2533609A (en) * 2014-12-22 2016-06-29 Gm Global Tech Operations Llc An internal combustion engine equipped with a lean NOx trap
CN113700541B (zh) * 2021-09-23 2023-01-20 潍柴动力股份有限公司 一种发动机scr系统催化单元脱硫再生的方法及其装置

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104564270A (zh) * 2013-10-17 2015-04-29 曼柴油机和涡轮机欧洲股份公司 用于内燃机的排气再处理系统的脱硫的方法

Also Published As

Publication number Publication date
DE59901226D1 (de) 2002-05-16
WO2000023702A1 (de) 2000-04-27
EP1121519B1 (de) 2002-04-10
DE19847875A1 (de) 2000-04-20
EP1121519A1 (de) 2001-08-08

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