WO2004012846A3 - Method and device for controlling the functioning of a nitrogen oxide trap for an internal combustion engine running on a lean mixture - Google Patents

Method and device for controlling the functioning of a nitrogen oxide trap for an internal combustion engine running on a lean mixture Download PDF

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Publication number
WO2004012846A3
WO2004012846A3 PCT/FR2003/002421 FR0302421W WO2004012846A3 WO 2004012846 A3 WO2004012846 A3 WO 2004012846A3 FR 0302421 W FR0302421 W FR 0302421W WO 2004012846 A3 WO2004012846 A3 WO 2004012846A3
Authority
WO
WIPO (PCT)
Prior art keywords
controlling
nitrogen oxide
functioning
lean mixture
oxide trap
Prior art date
Application number
PCT/FR2003/002421
Other languages
French (fr)
Other versions
WO2004012846A2 (en
Inventor
Stephane Cochet
Bernard Dionnet
Marc Daneau
Fabrice Gauvin
Karim Guenounou
Original Assignee
Renault Sa
Stephane Cochet
Bernard Dionnet
Marc Daneau
Fabrice Gauvin
Karim Guenounou
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 Renault Sa, Stephane Cochet, Bernard Dionnet, Marc Daneau, Fabrice Gauvin, Karim Guenounou filed Critical Renault Sa
Priority to JP2004525500A priority Critical patent/JP2005534855A/en
Priority to US10/522,724 priority patent/US20060117738A1/en
Priority to CA002493529A priority patent/CA2493529A1/en
Priority to AU2003281833A priority patent/AU2003281833A1/en
Priority to EP03756518A priority patent/EP1525045A2/en
Publication of WO2004012846A2 publication Critical patent/WO2004012846A2/en
Publication of WO2004012846A3 publication Critical patent/WO2004012846A3/en

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
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • 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
    • F01N3/10—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
    • 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
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural 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
    • 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
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—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
    • F01N3/0814—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
    • 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
    • F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1413—Controller structures or design
    • F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

Disclosed is a method according to which a first oxygen sensor (21) is disposed on the exhaust pipe upstream from a nitrogen oxide trap (18), and the development of a meaningful signal that is representative of the signal (3, 4) supplied by said sensor is monitored. A substantial increase (34, 44) of said meaningful signal, which is obtained following a variation (31, 41) resulting from the motor being switched from running on a lean mixture to running on a rich mixture, from a first plate (32, 42) having an essentially constant level is used as an indicator for controlling the end of the purge process. The invention applies to diesel engines.
PCT/FR2003/002421 2002-07-31 2003-07-30 Method and device for controlling the functioning of a nitrogen oxide trap for an internal combustion engine running on a lean mixture WO2004012846A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2004525500A JP2005534855A (en) 2002-07-31 2003-07-30 Method and apparatus for managing the function of a nitrogen oxide trap for an internal combustion engine operating with a lean mixture
US10/522,724 US20060117738A1 (en) 2002-07-31 2003-07-30 Method and device for controlling the functioning of a nitrogen oxide trap for an internal combustion engine running on a lean mixture
CA002493529A CA2493529A1 (en) 2002-07-31 2003-07-30 Method and device for controlling the functioning of a nitrogen oxide trap for an internal combustion engine running on a lean mixture
AU2003281833A AU2003281833A1 (en) 2002-07-31 2003-07-30 Method and device for controlling the functioning of a nitrogen oxide trap for an internal combustion engine running on a lean mixture
EP03756518A EP1525045A2 (en) 2002-07-31 2003-07-30 Method and device for controlling the functioning of a nitrogen oxide trap for an internal combustion engine running on a lean mixture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0209712A FR2843044B1 (en) 2002-07-31 2002-07-31 METHOD AND DEVICE FOR MANAGING THE OPERATION OF A NITROGEN OXIDE TRAP FOR AN INTERNAL COMBUSTION ENGINE OPERATING IN A POOR MIXTURE.
FR02/09712 2002-07-31

Publications (2)

Publication Number Publication Date
WO2004012846A2 WO2004012846A2 (en) 2004-02-12
WO2004012846A3 true WO2004012846A3 (en) 2004-04-08

Family

ID=30129564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2003/002421 WO2004012846A2 (en) 2002-07-31 2003-07-30 Method and device for controlling the functioning of a nitrogen oxide trap for an internal combustion engine running on a lean mixture

Country Status (8)

Country Link
US (1) US20060117738A1 (en)
EP (1) EP1525045A2 (en)
JP (1) JP2005534855A (en)
KR (1) KR20050030965A (en)
AU (1) AU2003281833A1 (en)
CA (1) CA2493529A1 (en)
FR (1) FR2843044B1 (en)
WO (1) WO2004012846A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871849B1 (en) 2004-06-17 2006-09-08 Renault Sas METHOD AND DEVICE FOR MANAGING THE OPERATION OF A NITROGEN OXIDE TRAP AND DIAGNOSING ITS AGING CONDITION
FR2876736B1 (en) * 2004-10-18 2007-01-19 Renault Sas METHOD FOR CONTROLLING A NITROGEN OXIDE TRAP OF AN INTERNAL COMBUSTION ENGINE
FR2929652B1 (en) * 2008-04-04 2012-07-20 Renault Sas SYSTEM AND METHOD FOR MONITORING FRESH AIR AND BURNER GASES INTRODUCED IN AN INTERNAL COMBUSTION ENGINE DURING TRANSITIONS BETWEEN THE PURGING OF A NITROGEN OXIDE TRAP AND THE REGENERATION OF A PARTICLE FILTER
GB2517140A (en) * 2013-07-29 2015-02-18 Gm Global Tech Operations Inc Control apparatus for operating an internal combustion engine
FR3033832B1 (en) * 2015-03-17 2017-03-24 Peugeot Citroen Automobiles Sa PROCESS FOR PURGING OR LOADING OXYGEN FROM A CATALYST INSTALLED IN THE FLOW OF AN ENGINE

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998055742A1 (en) * 1997-06-03 1998-12-10 Siemens Aktiengesellschaft PROCESS FOR REGENERATING AN NOx ACCUMULATOR CATALYTIC CONVERTER
DE19844082C1 (en) * 1998-09-25 1999-10-14 Siemens Ag Regeneration of a nitrogen oxides storage catalyst used with lean burn engine
DE10035525A1 (en) * 2000-07-21 2002-02-07 Bosch Gmbh Robert Process for operating a catalyst
DE10057938A1 (en) * 2000-11-22 2002-05-23 Volkswagen Ag Regenerating nitrogen oxides storage catalyst in I.C. engine involves extrapolating oxygen-dependent signal from oxygen-sensitive measuring device
DE10057936A1 (en) * 2000-11-22 2002-05-23 Volkswagen Ag Regenerating nitrogen oxides storage catalyst in exhaust gas channel of lean-burn I.C. engine involves using extrapolated oxygen-dependent signal
US6408615B1 (en) * 1998-02-27 2002-06-25 Volkswagen Ag Method for controlling an NOx accumulating catalytic converter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3430879B2 (en) * 1997-09-19 2003-07-28 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
DE19755600C2 (en) * 1997-12-15 2002-01-17 Bosch Gmbh Robert Operation of an internal combustion engine in connection with a NOx storage catalytic converter
DE19800665C1 (en) * 1998-01-10 1999-07-01 Degussa Method for operating a nitrogen oxide storage catalytic converter
DE19828929A1 (en) * 1998-06-29 2000-01-05 Siemens Ag Method for checking the dynamic behavior of a sensor in the exhaust tract of an internal combustion engine
JP3858554B2 (en) * 2000-02-23 2006-12-13 株式会社日立製作所 Engine exhaust purification system
US6438944B1 (en) * 2000-03-17 2002-08-27 Ford Global Technologies, Inc. Method and apparatus for optimizing purge fuel for purging emissions control device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998055742A1 (en) * 1997-06-03 1998-12-10 Siemens Aktiengesellschaft PROCESS FOR REGENERATING AN NOx ACCUMULATOR CATALYTIC CONVERTER
US6408615B1 (en) * 1998-02-27 2002-06-25 Volkswagen Ag Method for controlling an NOx accumulating catalytic converter
DE19844082C1 (en) * 1998-09-25 1999-10-14 Siemens Ag Regeneration of a nitrogen oxides storage catalyst used with lean burn engine
DE10035525A1 (en) * 2000-07-21 2002-02-07 Bosch Gmbh Robert Process for operating a catalyst
DE10057938A1 (en) * 2000-11-22 2002-05-23 Volkswagen Ag Regenerating nitrogen oxides storage catalyst in I.C. engine involves extrapolating oxygen-dependent signal from oxygen-sensitive measuring device
DE10057936A1 (en) * 2000-11-22 2002-05-23 Volkswagen Ag Regenerating nitrogen oxides storage catalyst in exhaust gas channel of lean-burn I.C. engine involves using extrapolated oxygen-dependent signal

Also Published As

Publication number Publication date
KR20050030965A (en) 2005-03-31
CA2493529A1 (en) 2004-02-12
EP1525045A2 (en) 2005-04-27
JP2005534855A (en) 2005-11-17
WO2004012846A2 (en) 2004-02-12
FR2843044A1 (en) 2004-02-06
AU2003281833A1 (en) 2004-02-23
FR2843044B1 (en) 2005-04-08
AU2003281833A8 (en) 2004-02-23
US20060117738A1 (en) 2006-06-08

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