ATE333040T1 - METHOD FOR DESULFATIZING A NOX STORAGE IN AN COMBUSTION ENGINE - Google Patents

METHOD FOR DESULFATIZING A NOX STORAGE IN AN COMBUSTION ENGINE

Info

Publication number
ATE333040T1
ATE333040T1 AT02007800T AT02007800T ATE333040T1 AT E333040 T1 ATE333040 T1 AT E333040T1 AT 02007800 T AT02007800 T AT 02007800T AT 02007800 T AT02007800 T AT 02007800T AT E333040 T1 ATE333040 T1 AT E333040T1
Authority
AT
Austria
Prior art keywords
knock
sensitivity
fuel consumption
sulfur
fuel
Prior art date
Application number
AT02007800T
Other languages
German (de)
Inventor
Florian Preuss
Stefan Detterbeck
Hanns-Christian Hasenclever
Matthew Dr Keenan
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke Ag filed Critical Bayerische Motoren Werke Ag
Application granted granted Critical
Publication of ATE333040T1 publication Critical patent/ATE333040T1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock sensors
    • 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
    • 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
    • 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
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0611—Fuel type, fuel composition or fuel quality
    • F02D2200/0612—Fuel type, fuel composition or fuel quality determined by estimation
    • 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
    • F02D2200/0818—SOx storage amount, e.g. for SOx trap or NOx trap

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Treating Waste Gases (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

In a process to remove sulfur from an automotive NOx storage trap operated in lean burn mode, a calculation model determines the sulfur removal steps. The steps are modified using information derived from a knock signal and the fuel anti-knock sensitivity, fuel consumption. The fuel consumption is determined during a lean burn phase of motor operation. The fuel consumption is determined since the previous sulfur removal cycle. A relationship is established between the knock-sensitivity and the fuel sulfur concentration. The relationship between knock-sensitivity and sulfur concentration is held in a memory device. A correctional parameter is determined using the knock-sensitivity and fuel consumption. This parameter is incorporated in the calculation model and is determines the sulfur removal process intervals.
AT02007800T 2001-05-16 2002-04-06 METHOD FOR DESULFATIZING A NOX STORAGE IN AN COMBUSTION ENGINE ATE333040T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10123682A DE10123682A1 (en) 2001-05-16 2001-05-16 Process for desulfurizing a NOx storage device in an internal combustion engine

Publications (1)

Publication Number Publication Date
ATE333040T1 true ATE333040T1 (en) 2006-08-15

Family

ID=7684910

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02007800T ATE333040T1 (en) 2001-05-16 2002-04-06 METHOD FOR DESULFATIZING A NOX STORAGE IN AN COMBUSTION ENGINE

Country Status (3)

Country Link
EP (1) EP1258620B1 (en)
AT (1) ATE333040T1 (en)
DE (2) DE10123682A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4235069B2 (en) * 2003-09-12 2009-03-04 トヨタ自動車株式会社 Internal combustion engine exhaust purification catalyst control device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657625A (en) * 1994-06-17 1997-08-19 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Apparatus and method for internal combustion engine control
JP2000073925A (en) * 1998-09-03 2000-03-07 Nippon Soken Inc Knock control device
US6116208A (en) * 1998-09-29 2000-09-12 Mazda Motor Corporation Control system for a direct injection-spark ignition engine
DE10018333A1 (en) * 1999-05-19 2000-11-23 Ford Global Tech Inc Procedure for controlling operation of lean-mix IC engine has determination of characteristic values for incremental NOX amount generated during lean-mix operating state and stored in trap

Also Published As

Publication number Publication date
EP1258620A3 (en) 2005-04-13
DE10123682A1 (en) 2002-12-19
EP1258620B1 (en) 2006-07-12
EP1258620A2 (en) 2002-11-20
DE50207467D1 (en) 2006-08-24

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