WO2000077371A1 - VERFAHREN ZUR ERHÖHUNG DER NOx-UMSATZRATE VON GESCHÄDIGTEN NOx-SPEICHERKATALYSATOREN - Google Patents
VERFAHREN ZUR ERHÖHUNG DER NOx-UMSATZRATE VON GESCHÄDIGTEN NOx-SPEICHERKATALYSATOREN Download PDFInfo
- Publication number
- WO2000077371A1 WO2000077371A1 PCT/EP2000/004808 EP0004808W WO0077371A1 WO 2000077371 A1 WO2000077371 A1 WO 2000077371A1 EP 0004808 W EP0004808 W EP 0004808W WO 0077371 A1 WO0077371 A1 WO 0077371A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lean
- catalyst
- nox
- regeneration
- undamaged
- Prior art date
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
- 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
-
- 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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/04—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by adding non-fuel substances to combustion air or fuel, e.g. additives
-
- 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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/10—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying inlet or exhaust valve timing
-
- 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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
- F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
Definitions
- the present invention relates to a method for increasing the NO x conversion rate of damaged NO x storage catalysts.
- NO ⁇ storage catalytic converters consist of a conventional 3-way coating, which is expanded by a NO x storage component. They store nitrogen oxides through the formation of nitrate in the lean exhaust gas and convert them into harmless N 2 under reducing conditions in the rich exhaust gas, whereby they are specifically emptied in order to essentially retain their full absorption capacity for nitrogen oxides, which decreases continuously with increasing nitrogen oxide loading in the lean phase.
- the object of the present invention is to provide a method for compensating for catalyst aging or damage by increasing the NO x - conversion rate, which allows also an aged or damaged NO x - storage catalytic converter while avoiding exceeding the permissible emission limits or to be able to operate the OBD-relevant NO x limit values and a certain additional consumption threshold for a long time without replacement.
- An adaptation of the operating behavior to a detected catalytic converter damage after one of the above-mentioned process steps can be correlated with a deterioration rate of the catalytic converter system with regard to the NO x or HC conversion, that is, it can be concluded from the adaptation whether the OBD with unchanged operating mode of the catalytic system Thresholds would be reached.
- the occurrence and extent of damage to the catalyst or catalyst aging is preferably determined by measuring the NO x emission rate by means of the NO x - storage catalyst downstream of the NO x sensor and comparing these measured values with predetermined desired values, or with the detected start of operation measured values of the undamaged NO x Storage catalyst determined.
- the NO x concentration is shown behind a NO x storage catalytic converter in a stationary operating point in alternating rich-lean mode for a fresh or undamaged, a partially damaged and a border-damaged catalytic converter.
- the fresh NO x storage catalytic converter With raw NO x emissions of around 1200 ppm, the fresh NO x storage catalytic converter only reaches this threshold value after around 100 seconds, while it is reached after around 80 seconds in the case of the catalytic converter which is partially damaged by thermal aging and sulfur poisoning, which leads to a corresponding reduction in the Lean phase leads to 20% and correspondingly more frequent NO x regeneration.
- the possible lean operating time at this operating point is reduced to about 40 seconds, so that the NO x regeneration must take place 2.5 times as often as with the fresh catalyst.
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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001503797A JP2003502554A (ja) | 1999-06-09 | 2000-05-26 | 性能の低下したnox貯蔵容器触媒のnox変換率を高める方法 |
EP00929557A EP1198666A1 (de) | 1999-06-09 | 2000-05-26 | VERFAHREN ZUR ERHÖHUNG DER NO x-UMSATZRATE VON GESCHÄDIGTEN NO x-SPEICHERKATALYSATOREN |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19926148A DE19926148A1 (de) | 1999-06-09 | 1999-06-09 | Verfahren zur Erhöhung der NOx-Umsatzrate von geschädigten NOx-Speicherkatalysatoren |
DE19926148.2 | 1999-06-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000077371A1 true WO2000077371A1 (de) | 2000-12-21 |
Family
ID=7910583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/004808 WO2000077371A1 (de) | 1999-06-09 | 2000-05-26 | VERFAHREN ZUR ERHÖHUNG DER NOx-UMSATZRATE VON GESCHÄDIGTEN NOx-SPEICHERKATALYSATOREN |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1198666A1 (de) |
JP (1) | JP2003502554A (de) |
DE (1) | DE19926148A1 (de) |
WO (1) | WO2000077371A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4314089B2 (ja) * | 2003-09-29 | 2009-08-12 | トヨタ自動車株式会社 | 内燃機関の触媒制御装置及び触媒劣化判定装置 |
JP2006125247A (ja) * | 2004-10-27 | 2006-05-18 | Hitachi Ltd | エンジンの排気ガス浄化方法及び排気ガス浄化装置 |
US8112988B2 (en) * | 2006-03-16 | 2012-02-14 | Ford Global Technologies, Llc | System and method for desulfating a NOx trap |
DE102008025520B4 (de) * | 2008-05-28 | 2011-06-09 | Ford Global Technologies, LLC, Dearborn | Verfahren zum Betreiben einer Abgasnachbehandlungsanordnung, sowie Abgasnachbehandlungsanordnung |
DE102010050406A1 (de) | 2010-11-04 | 2012-05-10 | Daimler Ag | Kraftfahrzeug-Brennkraftmaschine und Betriebsverfahren für eine Kraftfahrzeug-Brennkraftmaschine |
DE102010060992A1 (de) * | 2010-12-02 | 2012-06-06 | Fev Gmbh | Ladedruckgeführtes Regelverfahren für eine Brennkraftmaschine |
DE112015005082A5 (de) | 2014-11-10 | 2017-07-27 | Fev Gmbh | Verfahren zum Betreiben einer Verbrennungskraftmaschine mit einem NOx-Speicherkatalysator |
GB2538961B (en) * | 2015-06-01 | 2017-10-11 | Ford Global Tech Llc | A method of adaptively controlling purging of a lean NOx trap |
CN112523848A (zh) * | 2020-10-29 | 2021-03-19 | 广西玉柴机器股份有限公司 | 一种燃油硫量的处理方法及相关装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05133260A (ja) * | 1991-11-12 | 1993-05-28 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
JPH06264787A (ja) * | 1993-03-12 | 1994-09-20 | Nissan Motor Co Ltd | 内燃機関の空燃比制御装置 |
WO1998012423A1 (fr) * | 1996-09-20 | 1998-03-26 | Hitachi, Ltd. | Dispositif de commande de moteur |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2836523B2 (ja) * | 1995-03-24 | 1998-12-14 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2827954B2 (ja) * | 1995-03-28 | 1998-11-25 | トヨタ自動車株式会社 | NOx 吸収剤の劣化検出装置 |
US5704339A (en) * | 1996-04-26 | 1998-01-06 | Ford Global Technologies, Inc. | method and apparatus for improving vehicle fuel economy |
DE19800665C1 (de) * | 1998-01-10 | 1999-07-01 | Degussa | Verfahren zum Betreiben eines Stickoxid-Speicherkatalysators |
-
1999
- 1999-06-09 DE DE19926148A patent/DE19926148A1/de not_active Withdrawn
-
2000
- 2000-05-26 WO PCT/EP2000/004808 patent/WO2000077371A1/de active Application Filing
- 2000-05-26 EP EP00929557A patent/EP1198666A1/de not_active Ceased
- 2000-05-26 JP JP2001503797A patent/JP2003502554A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05133260A (ja) * | 1991-11-12 | 1993-05-28 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
JPH06264787A (ja) * | 1993-03-12 | 1994-09-20 | Nissan Motor Co Ltd | 内燃機関の空燃比制御装置 |
WO1998012423A1 (fr) * | 1996-09-20 | 1998-03-26 | Hitachi, Ltd. | Dispositif de commande de moteur |
EP0927818A1 (de) * | 1996-09-20 | 1999-07-07 | Hitachi, Ltd. | Motorkontroll vorrichtung |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 517 (M - 1481) 17 September 1993 (1993-09-17) * |
PATENT ABSTRACTS OF JAPAN vol. 018, no. 671 (M - 1726) 19 December 1994 (1994-12-19) * |
See also references of EP1198666A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2003502554A (ja) | 2003-01-21 |
DE19926148A1 (de) | 2000-12-14 |
EP1198666A1 (de) | 2002-04-24 |
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