EP1079079A3 - Method for controlling a diesel engine - Google Patents

Method for controlling a diesel engine Download PDF

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Publication number
EP1079079A3
EP1079079A3 EP00113356A EP00113356A EP1079079A3 EP 1079079 A3 EP1079079 A3 EP 1079079A3 EP 00113356 A EP00113356 A EP 00113356A EP 00113356 A EP00113356 A EP 00113356A EP 1079079 A3 EP1079079 A3 EP 1079079A3
Authority
EP
European Patent Office
Prior art keywords
diesel engine
salts
storage
exhaust gas
mode
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
EP00113356A
Other languages
German (de)
French (fr)
Other versions
EP1079079B1 (en
EP1079079A2 (en
Inventor
Holger Adler
Frank Dr. Duvinage
Stefan Dr. Kurze
Michael Lenz
Thomas Liebscher
Ulrich Merten
Norbert Ruzicka
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.)
Daimler AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1079079A2 publication Critical patent/EP1079079A2/en
Publication of EP1079079A3 publication Critical patent/EP1079079A3/en
Application granted granted Critical
Publication of EP1079079B1 publication Critical patent/EP1079079B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
    • 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
    • F02D41/021—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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
    • 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
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/32—Air-fuel ratio control in a diesel engine

Abstract

Die Erfindung betrifft eine Steuerung für einen Dieselmotor, in dessen Abgasstrang ein Speicherkatalysator angeordnet ist, wobei die Steuerung einen Betrieb des Dieselmotors in einem Speichermodus ermöglicht, in dem aus dem Abgas des Dieselmotors NOx-Salze und SOx-Salze im Speicherkatalysator adsorbiert werden.The invention relates to a controller for a diesel engine, in whose exhaust gas a storage catalytic converter is arranged, wherein the controller allows operation of the diesel engine in a storage mode, are adsorbed in the storage catalytic converter from the exhaust of the diesel engine NO x salts and SO x salts.

Um den Speicherkatalysator hinsichtlich der NOx-Salze zu regenerieren, ermöglicht die Steuerung einen Betrieb des Dieselmotors in einem Regenerationsmodus, in dem ein reduzierend wirkendes Abgas erzeugt wird, wodurch zumindest die NOx-Salze aus dem Speicherkatalysator desorbiert werden.In order to regenerate the storage catalyst with respect to the NO x salts, the controller enables operation of the diesel engine in a regeneration mode in which a reducing exhaust gas is generated, thereby desorbing at least the NO x salts from the storage catalyst.

Um den Speicherkatalysator auch hinsichtlich der SOx-Salze zu regenerieren, ermöglicht die erfindungsgemäße Steuerung auch einen Betrieb des Dieselmotors in einem Entsalzungsmodus, in dem im Speicherkatalysator eine höhere Temperatur erzeugt wird als im Speichermodus und Regenerationsmodus und in dem abwechselnd ein reduzierend wirkendes Abgas und ein oxidierend wirkendes Abgas erzeugt wird, wodurch zumindest die SOx-Salze aus dem Speicherkatalysator desorbiert werden.

Figure 00000001
In order to regenerate the storage catalyst also with respect to the SO x salts, the control according to the invention also enables operation of the diesel engine in a desalting mode in which a higher temperature is generated in the storage catalytic converter than in the storage mode and regeneration mode and in which alternately a reducing exhaust gas and a oxidizing exhaust gas is generated, whereby at least the SO x salts are desorbed from the storage catalyst.
Figure 00000001
EP00113356A 1999-08-24 2000-06-23 Engine control system for a diesel engine Expired - Lifetime EP1079079B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19939988 1999-08-24
DE19939988A DE19939988A1 (en) 1999-08-24 1999-08-24 Method for operating a diesel engine

Publications (3)

Publication Number Publication Date
EP1079079A2 EP1079079A2 (en) 2001-02-28
EP1079079A3 true EP1079079A3 (en) 2003-02-12
EP1079079B1 EP1079079B1 (en) 2004-03-03

Family

ID=7919350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00113356A Expired - Lifetime EP1079079B1 (en) 1999-08-24 2000-06-23 Engine control system for a diesel engine

Country Status (3)

Country Link
EP (1) EP1079079B1 (en)
DE (2) DE19939988A1 (en)
ES (1) ES2215524T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7293407B2 (en) 2000-06-21 2007-11-13 Daimlerchrysler Ag Method for operating a diesel engine
DE10029504C2 (en) * 2000-06-21 2003-04-30 Daimler Chrysler Ag Method for operating a diesel engine
DE10153901B4 (en) * 2001-10-12 2011-07-14 Volkswagen AG, 38440 Method and device for desulfurization of a diesel engine downstream NOx storage catalyst
DE10158333A1 (en) * 2001-11-28 2003-06-18 Bosch Gmbh Robert Method for operating an internal combustion engine and internal combustion engine
DE10248734B4 (en) * 2002-10-18 2004-10-28 Litef Gmbh Method for electronically tuning the read oscillation frequency of a Coriolis gyro
EP1510672B1 (en) * 2003-08-26 2012-06-20 Volvo Car Corporation An oxygen sensor arrangement
DE102004052062A1 (en) * 2004-10-26 2006-04-27 Volkswagen Ag Regenerating a storage catalyst in an engine exhaust system comprises adjusting the lambda ratio to substoichiometric to regenerate the catalyst and repeatedly supplying air to produce a superstoichiometric lambda ratio

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580389A1 (en) * 1992-07-24 1994-01-26 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification apparatus for an internal combustion engine
EP0893154A2 (en) * 1997-07-23 1999-01-27 Volkswagen Aktiengesellschaft Process and apparatus for desulphating of NOx-traps for DI-Diesel engines
EP0899430A2 (en) * 1997-08-29 1999-03-03 Ford Global Technologies, Inc. Method and apparatus for desulphating a NOx trap
EP1050675A1 (en) * 1999-05-05 2000-11-08 DaimlerChrysler AG Exhaust gas purification device comprising a nitrogen oxide adsorber and method for desulphatizing therefore
EP1105629A1 (en) * 1999-05-19 2001-06-13 DaimlerChrysler AG Method for periodically desulfating a nitrogen oxide or sulfur oxide accumulator of an exhaust gas cleaning system
EP1183453A1 (en) * 1999-05-21 2002-03-06 Volkswagen Aktiengesellschaft METHOD FOR DESULFURIZATION OF AT LEAST ONE NOx STORAGE CATALYST MOUNTED IN THE EXHAUST GAS DUCT OF AN INTERNAL COMBUSTION ENGINE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19750226C1 (en) 1997-11-13 1998-10-29 Daimler Benz Ag Diesel engine management system controlling breathing and injection timing in rich and weak running

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580389A1 (en) * 1992-07-24 1994-01-26 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification apparatus for an internal combustion engine
EP0893154A2 (en) * 1997-07-23 1999-01-27 Volkswagen Aktiengesellschaft Process and apparatus for desulphating of NOx-traps for DI-Diesel engines
EP0899430A2 (en) * 1997-08-29 1999-03-03 Ford Global Technologies, Inc. Method and apparatus for desulphating a NOx trap
EP1050675A1 (en) * 1999-05-05 2000-11-08 DaimlerChrysler AG Exhaust gas purification device comprising a nitrogen oxide adsorber and method for desulphatizing therefore
EP1105629A1 (en) * 1999-05-19 2001-06-13 DaimlerChrysler AG Method for periodically desulfating a nitrogen oxide or sulfur oxide accumulator of an exhaust gas cleaning system
EP1183453A1 (en) * 1999-05-21 2002-03-06 Volkswagen Aktiengesellschaft METHOD FOR DESULFURIZATION OF AT LEAST ONE NOx STORAGE CATALYST MOUNTED IN THE EXHAUST GAS DUCT OF AN INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
DE19939988A1 (en) 2001-03-15
EP1079079B1 (en) 2004-03-03
EP1079079A2 (en) 2001-02-28
ES2215524T3 (en) 2004-10-16
DE50005490D1 (en) 2004-04-08

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