EP1367245A3 - Controlling method for an automotive engine with NOx storage catalyst - Google Patents

Controlling method for an automotive engine with NOx storage catalyst Download PDF

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Publication number
EP1367245A3
EP1367245A3 EP03005886A EP03005886A EP1367245A3 EP 1367245 A3 EP1367245 A3 EP 1367245A3 EP 03005886 A EP03005886 A EP 03005886A EP 03005886 A EP03005886 A EP 03005886A EP 1367245 A3 EP1367245 A3 EP 1367245A3
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
value
state variable
catalyst
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.)
Withdrawn
Application number
EP03005886A
Other languages
German (de)
French (fr)
Other versions
EP1367245A2 (en
Inventor
Ekkehardt Dr.-Ing. Pott
Heidereich Dr.-Ing. V. Biedersee
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 EP1367245A2 publication Critical patent/EP1367245A2/en
Publication of EP1367245A3 publication Critical patent/EP1367245A3/en
Withdrawn legal-status Critical Current

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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
    • F02D41/021—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
    • 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
    • F02D2200/0806—NOx storage amount, i.e. amount of NOx stored on NOx trap
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/501—Vehicle speed

Abstract

Bei einem Verfahren zum Betrieb eines Kraftfahrzeugs mit einer magerlauffähigen Brennkraftmaschine mit einem in einer Abgasanlage der Brennkraftmaschine angeordneten NOX-Speicherkatalysator, wobei eine Ermittlung des Wertes einer einen Schwefelvergiftungsgrad des Katalysators charakterisierende Zustandsgröße erfolgt, sind folgende Schritte vorgesehen:

  • Bildung eines Statussignals in Abhängigkeit von dem Wert der Zustandsgröße
  • Speicherung und / oder Anzeige des Statussignals zur Einleitung einer eine passive Entschwefelung des Katalysators bewirkenden Betriebsweise der Brennkraftmaschine.
In a method for operating a motor vehicle with a lean-running internal combustion engine with an arranged in an exhaust system of the internal combustion engine NOX storage catalyst, wherein a determination of the value of a sulfur poisoning degree of the catalyst characterizing state variable takes place, the following steps are provided:
  • Formation of a status signal as a function of the value of the state variable
  • Storage and / or display of the status signal for initiating a passive desulfurization of the catalyst causing operation of the internal combustion engine.

Ferner wird die Brennkraftmaschine dabei in Abhängigkeit vom Wert der Zustandsgröße auf eine Betriebsweise mit einem Lambdawert < 1 eingestellt.

Figure imgaf001
Furthermore, the internal combustion engine is set to an operating mode with a lambda value <1 depending on the value of the state variable.
Figure imgaf001
EP03005886A 2002-05-27 2003-03-17 Controlling method for an automotive engine with NOx storage catalyst Withdrawn EP1367245A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10223595 2002-05-27
DE2002123595 DE10223595A1 (en) 2002-05-27 2002-05-27 Method for operating a motor vehicle with a NOx storage catalytic converter

Publications (2)

Publication Number Publication Date
EP1367245A2 EP1367245A2 (en) 2003-12-03
EP1367245A3 true EP1367245A3 (en) 2006-06-14

Family

ID=29414218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03005886A Withdrawn EP1367245A3 (en) 2002-05-27 2003-03-17 Controlling method for an automotive engine with NOx storage catalyst

Country Status (2)

Country Link
EP (1) EP1367245A3 (en)
DE (1) DE10223595A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008045594B4 (en) 2008-09-03 2012-05-16 Audi Ag Method and device for metering in a reducing agent in an exhaust line of an internal combustion engine of a vehicle
EP2868885A4 (en) * 2012-06-19 2017-01-18 Toyota Jidosha Kabushiki Kaisha Exhaust purification device for internal combustion engine
DE102016222012B4 (en) 2015-12-18 2022-09-29 Ford Global Technologies, Llc Method for controlling a NOx storage catalyst
DE102015016525A1 (en) 2015-12-19 2016-08-11 Daimler Ag Method for determining a sulfurization of an exhaust aftertreatment device of an internal combustion engine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0860595A1 (en) * 1997-02-20 1998-08-26 Ford Global Technologies, Inc. Process for desulfurizing a nitrogen oxide trap in the exhaust system of a combustion engine
DE19816276A1 (en) * 1998-04-11 1999-10-14 Audi Ag Method for operating an internal combustion engine
DE19850757A1 (en) * 1998-08-07 2000-02-17 Volkswagen Ag Method and device for desulfating a catalyst device
EP0987408A2 (en) * 1998-09-17 2000-03-22 DaimlerChrysler AG Method of operation of an internal combustion engine with sulphur accumulated exhaust gas purification components and internal combustion engine operated by using this method
DE19843859A1 (en) * 1998-09-25 2000-03-30 Bosch Gmbh Robert Improvement in exhaust gas composition, following degradation due to sulfur content, is brought about by rich regeneration when either oxygen storage capacity or total sulfur input falls outside set threshold.
DE10047809A1 (en) * 2000-09-27 2002-05-23 Volkswagen Ag Process for controlling the operation of a secondary pump comprises determining a mass stream of oxidizable sulfur-containing compounds in the exhaust gas downstream of the catalyst

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705335C1 (en) * 1997-02-12 1998-09-17 Siemens Ag Process for the regeneration of a storage catalytic converter
US5832722A (en) * 1997-03-31 1998-11-10 Ford Global Technologies, Inc. Method and apparatus for maintaining catalyst efficiency of a NOx trap
DE19747222C1 (en) * 1997-10-25 1999-03-04 Daimler Benz Ag Lean burn internal combustion engine with periodic nitrogen oxide(s) storage catalyst regeneration control
JP3805098B2 (en) * 1998-03-26 2006-08-02 株式会社日立製作所 Engine exhaust gas purification control device
DE19910664A1 (en) * 1999-03-11 2000-09-14 Volkswagen Ag Process for the de-sulfation of a NOx storage catalytic converter
DE19921973A1 (en) * 1999-05-12 2000-11-16 Volkswagen Ag Process for desulfurization of a nitrogen oxides storage catalyst arranged in an exhaust gas channel of an IC engine comprises initiating desulfurization depending on an actual
DE19926146A1 (en) * 1999-06-09 2000-12-14 Volkswagen Ag Method for initiating and monitoring desulfurization of at least one NOx storage catalytic converter arranged in an exhaust gas duct of an internal combustion engine
US6250283B1 (en) * 1999-10-18 2001-06-26 Ford Global Technologies, Inc. Vehicle control method
DE19935341A1 (en) * 1999-07-28 2001-02-01 Volkswagen Ag Method for controlling an exhaust gas temperature of a lean-burn internal combustion engine during desulfurization of a catalytic converter
DE10001992A1 (en) * 2000-01-19 2001-07-26 Volkswagen Ag Method to temporarily increase exhaust gas temperature of internal combustion engine; involves measuring state of electrical or other consumer to raise motor load and controlling fuel injection
DE10017203A1 (en) * 2000-04-06 2001-10-11 Audi Ag Process for the desulfurization of an oxidation catalytic converter arranged in the exhaust line of a diesel internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0860595A1 (en) * 1997-02-20 1998-08-26 Ford Global Technologies, Inc. Process for desulfurizing a nitrogen oxide trap in the exhaust system of a combustion engine
DE19816276A1 (en) * 1998-04-11 1999-10-14 Audi Ag Method for operating an internal combustion engine
DE19850757A1 (en) * 1998-08-07 2000-02-17 Volkswagen Ag Method and device for desulfating a catalyst device
EP0987408A2 (en) * 1998-09-17 2000-03-22 DaimlerChrysler AG Method of operation of an internal combustion engine with sulphur accumulated exhaust gas purification components and internal combustion engine operated by using this method
DE19843859A1 (en) * 1998-09-25 2000-03-30 Bosch Gmbh Robert Improvement in exhaust gas composition, following degradation due to sulfur content, is brought about by rich regeneration when either oxygen storage capacity or total sulfur input falls outside set threshold.
DE10047809A1 (en) * 2000-09-27 2002-05-23 Volkswagen Ag Process for controlling the operation of a secondary pump comprises determining a mass stream of oxidizable sulfur-containing compounds in the exhaust gas downstream of the catalyst

Also Published As

Publication number Publication date
DE10223595A1 (en) 2003-12-11
EP1367245A2 (en) 2003-12-03

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