EP1365131A3 - Method for controling a NOx storage catalyst - Google Patents

Method for controling a NOx storage catalyst Download PDF

Info

Publication number
EP1365131A3
EP1365131A3 EP03090075A EP03090075A EP1365131A3 EP 1365131 A3 EP1365131 A3 EP 1365131A3 EP 03090075 A EP03090075 A EP 03090075A EP 03090075 A EP03090075 A EP 03090075A EP 1365131 A3 EP1365131 A3 EP 1365131A3
Authority
EP
European Patent Office
Prior art keywords
catalyst
storage
storage catalyst
nitrogen oxides
oxygen
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
EP03090075A
Other languages
German (de)
French (fr)
Other versions
EP1365131A2 (en
EP1365131B1 (en
Inventor
Hermann Hahn
Soren Hinze
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 EP1365131A2 publication Critical patent/EP1365131A2/en
Publication of EP1365131A3 publication Critical patent/EP1365131A3/en
Application granted granted Critical
Publication of EP1365131B1 publication Critical patent/EP1365131B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F02D41/146—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 NOx content or concentration
    • 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
    • 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
    • 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
    • F01N2560/026—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
    • 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
    • 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
    • F02D2200/0802—Temperature of the exhaust gas treatment apparatus
    • 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
    • F02D2200/0814—Oxygen storage amount

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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

Process for controlling a nitrogen oxides storage catalyst in an internal combustion engine comprises evaluating the actual catalyst behavior with respect to oxygen storage of the oxygen-containing component in the catalyst coating at the start of the regeneration of the storage catalyst, and/or regenerating the nitrogen oxides storage catalyst. Process for controlling a nitrogen oxides storage catalyst in an internal combustion engine comprises evaluating the actual catalyst behavior with respect to oxygen storage of the oxygen-containing component in the catalyst coating at the start of the regeneration of the storage catalyst, and/or regenerating the nitrogen oxides storage catalyst when a prescribed threshold value for the saturation state of the catalyst is reached or increasing the regeneration when the prescribed threshold value for the saturation state of the catalyst is reached neglecting introduction of a reducing agent.
EP03090075A 2002-05-08 2003-03-20 Method for controling a NOx storage catalyst Expired - Lifetime EP1365131B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10221568 2002-05-08
DE10221568A DE10221568A1 (en) 2002-05-08 2002-05-08 Method for controlling a NO¶x¶ storage catalytic converter

Publications (3)

Publication Number Publication Date
EP1365131A2 EP1365131A2 (en) 2003-11-26
EP1365131A3 true EP1365131A3 (en) 2004-04-07
EP1365131B1 EP1365131B1 (en) 2006-08-16

Family

ID=29285423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03090075A Expired - Lifetime EP1365131B1 (en) 2002-05-08 2003-03-20 Method for controling a NOx storage catalyst

Country Status (3)

Country Link
EP (1) EP1365131B1 (en)
AT (1) ATE336650T1 (en)
DE (2) DE10221568A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10360072A1 (en) * 2003-12-20 2005-07-14 Audi Ag Exhaust system for an internal combustion engine of a vehicle, in particular of a motor vehicle
DE102004022814B4 (en) * 2004-05-08 2010-06-10 Audi Ag Method for operating a lean-running internal combustion engine of a vehicle, in particular of a motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999035386A1 (en) * 1998-01-09 1999-07-15 Ford Global Technologies, Inc. Method for regenerating a nitrogen oxide trap in the exhaust system of an internal combustion engine
DE19851564A1 (en) * 1998-11-09 2000-05-11 Siemens Ag Process for conducting and testing the activity of a nitrogen oxides storage catalyst comprises comparing the ageing factor of the catalyst with a number of threshold values of different levels
DE19929292A1 (en) * 1999-06-25 2000-12-28 Volkswagen Ag Control of the operating condition of motor vehicle internal combustion engine dependent upon the catalyst cell temperature uses set detected threshold levels to vary engine control parameters
WO2001006105A1 (en) * 1999-07-19 2001-01-25 Volkswagen Aktiengesellschaft Method of regulating the operational mode of an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999035386A1 (en) * 1998-01-09 1999-07-15 Ford Global Technologies, Inc. Method for regenerating a nitrogen oxide trap in the exhaust system of an internal combustion engine
DE19851564A1 (en) * 1998-11-09 2000-05-11 Siemens Ag Process for conducting and testing the activity of a nitrogen oxides storage catalyst comprises comparing the ageing factor of the catalyst with a number of threshold values of different levels
DE19929292A1 (en) * 1999-06-25 2000-12-28 Volkswagen Ag Control of the operating condition of motor vehicle internal combustion engine dependent upon the catalyst cell temperature uses set detected threshold levels to vary engine control parameters
WO2001006105A1 (en) * 1999-07-19 2001-01-25 Volkswagen Aktiengesellschaft Method of regulating the operational mode of an internal combustion engine

Also Published As

Publication number Publication date
DE10221568A1 (en) 2003-12-04
EP1365131A2 (en) 2003-11-26
DE50304630D1 (en) 2006-09-28
ATE336650T1 (en) 2006-09-15
EP1365131B1 (en) 2006-08-16

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