EP1258620A2 - Méthode de désulfatation d'un piège à NOx dans un moteur à combustion interne - Google Patents

Méthode de désulfatation d'un piège à NOx dans un moteur à combustion interne Download PDF

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Publication number
EP1258620A2
EP1258620A2 EP02007800A EP02007800A EP1258620A2 EP 1258620 A2 EP1258620 A2 EP 1258620A2 EP 02007800 A EP02007800 A EP 02007800A EP 02007800 A EP02007800 A EP 02007800A EP 1258620 A2 EP1258620 A2 EP 1258620A2
Authority
EP
European Patent Office
Prior art keywords
knock
fuel
determined
desulfating
fuel consumption
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
EP02007800A
Other languages
German (de)
English (en)
Other versions
EP1258620A3 (fr
EP1258620B1 (fr
Inventor
Florian Preuss
Stefan Detterbeck
Hanns-Christian Hasenclever
Matthew Dr. Keenan
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.)
Bayerische Motoren Werke AG
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
Publication of EP1258620A2 publication Critical patent/EP1258620A2/fr
Publication of EP1258620A3 publication Critical patent/EP1258620A3/fr
Application granted granted Critical
Publication of EP1258620B1 publication Critical patent/EP1258620B1/fr
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
    • 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

Definitions

  • the invention relates to a method for desulfurizing a NO x storage device in an internal combustion engine according to the preamble of claim 1.
  • NO x accumulator in order to reduce the environmental impact and are then regularly eliminated in a regeneration process in the case of a rich mode of operation of the internal combustion engine.
  • NO x sensor can be used to identify the nitrogen oxide load in the storage and thus to control the regeneration process.
  • suitable models can also be used to infer the sulfur loading of the NO x storage.
  • a sulfur loading model is conventionally used to assess the extent of sulfur storage in the NO x storage, the sulfur loading model usually being designed in such a way that an artificial, sufficiently early desulfation is requested and carried out, even for predominantly short distances and in urban use becomes.
  • the object of the present invention is a method of the aforementioned Provide species with a desulfation that meets the needs.
  • a normal model calculation as is already known from the prior art used.
  • the knock signal or the knock control which is in the engine control in is present in most cases, evaluated and a knock sensitivity of the Fuel determined.
  • the amount of fuel used, determined and evaluated in particular during lean operation. On fuel consumption can be done, for example, by evaluating the injection processes or close the tank level evaluation.
  • Size can be determined, which is included in the model calculation and so affects that with a fuel with a high tendency to knock in shorter intervals desulfation is carried out. For a fuel with one less With a high tendency to knock, the desulfation intervals are selected further apart.
  • a map there is a relation between the knock sensitivity and the sulfur concentration in the fuel, depending on the tendency to knock deduces the sulfur concentration.
  • the present invention thus allows a simple and very inexpensive way perform a needs-based adaptation of the desulfation steps.

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)
  • Exhaust Gas After Treatment (AREA)
  • Treating Waste Gases (AREA)
EP02007800A 2001-05-16 2002-04-06 Méthode de désulfatation d'un piège à NOx dans un moteur à combustion interne Expired - Lifetime EP1258620B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10123682A DE10123682A1 (de) 2001-05-16 2001-05-16 Verfahren zur Desulfatisierung eines NOx-Speichers bei einem Verbrennungsmotor
DE10123682 2001-05-16

Publications (3)

Publication Number Publication Date
EP1258620A2 true EP1258620A2 (fr) 2002-11-20
EP1258620A3 EP1258620A3 (fr) 2005-04-13
EP1258620B1 EP1258620B1 (fr) 2006-07-12

Family

ID=7684910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007800A Expired - Lifetime EP1258620B1 (fr) 2001-05-16 2002-04-06 Méthode de désulfatation d'un piège à NOx dans un moteur à combustion interne

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1515016A3 (fr) * 2003-09-12 2006-03-08 Toyota Jidosha Kabushiki Kaisha Dispositif de commande d'un catalyseur pour la purification de gaz d'échappement pour un moteur à combustion interne

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 (ja) * 1998-09-03 2000-03-07 Nippon Soken Inc ノック制御装置
US6116208A (en) * 1998-09-29 2000-09-12 Mazda Motor Corporation Control system for a direct injection-spark ignition engine
DE10018333A1 (de) * 1999-05-19 2000-11-23 Ford Global Tech Inc Verfahren und System zur Reduzierung von NO¶x¶-Abgasemissionen eines Magermix-Innenverbrennungsmotors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1515016A3 (fr) * 2003-09-12 2006-03-08 Toyota Jidosha Kabushiki Kaisha Dispositif de commande d'un catalyseur pour la purification de gaz d'échappement pour un moteur à combustion interne

Also Published As

Publication number Publication date
DE10123682A1 (de) 2002-12-19
DE50207467D1 (de) 2006-08-24
EP1258620A3 (fr) 2005-04-13
EP1258620B1 (fr) 2006-07-12
ATE333040T1 (de) 2006-08-15

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