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WO2008022751A3 - Verfahren zum betreiben einer abgasreinigungsanlage an einem mager betriebenen ottomotor - Google Patents

Verfahren zum betreiben einer abgasreinigungsanlage an einem mager betriebenen ottomotor Download PDF

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Publication number
WO2008022751A3
WO2008022751A3 PCT/EP2007/007290 EP2007007290W WO2008022751A3 WO 2008022751 A3 WO2008022751 A3 WO 2008022751A3 EP 2007007290 W EP2007007290 W EP 2007007290W WO 2008022751 A3 WO2008022751 A3 WO 2008022751A3
Authority
WO
WIPO (PCT)
Prior art keywords
lean
catalytic converter
ammonia
exhaust
exhaust gas
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.)
Ceased
Application number
PCT/EP2007/007290
Other languages
English (en)
French (fr)
Other versions
WO2008022751A2 (de
Inventor
Susanne Philipp
Torsten Franke
Stephan Eckhoff
Wilfried Mueller
Thomas Kreuzer
Hubert Bichler
Rainer Zimmer
Christof Schoen
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
Umicore AG and Co KG
Mercedes Benz Group AG
Original Assignee
Bayerische Motoren Werke AG
DaimlerChrysler AG
Umicore AG and Co KG
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, DaimlerChrysler AG, Umicore AG and Co KG filed Critical Bayerische Motoren Werke AG
Publication of WO2008022751A2 publication Critical patent/WO2008022751A2/de
Publication of WO2008022751A3 publication Critical patent/WO2008022751A3/de
Anticipated expiration legal-status Critical
Ceased 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. by adjusting the dosing of reducing agent
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • 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
    • 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
    • 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
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Zur Entfernung der Stickoxide aus dem Abgas eines Magermotors ist es bekannt, eine Abgasreinigungsanlage aus einem Stickoxid- Speicherkatalysator und einem SCR-Katalysator zu verwenden und den Motor mit abwechselnd mageren und fetten Luft/Kraftstoff-Gemischen zu betreiben. Der für die SCR-Reaktion benötigte Ammoniak wird hierbei während der Regeneration des Stickoxid-Speicherkatalysators erzeugt. Nachteilig hierbei ist, daß bei hohen Temperaturen nicht mehr ausreichend Ammoniak bei der Regeneration erzeugt wird. Es wird daher vorgeschlagen, bei Abgastemperaturen oberhalb von etwa 350 °C vor dem SCR-Katalysator Ammoniak einzudüsen. Bei Abgastemperaturen unterhalb von 350°C unterbleibt die Eindüsung von Ammoniak. Das Verfahren ist besonders für Magermotoren mit strahlgeführter Benzindirekteinspritzung, die auch noch bei hoher Last mit einem mageren Luft/Kraftstoff-Gemisch betrieben werden können.
PCT/EP2007/007290 2006-08-19 2007-08-17 Verfahren zum betreiben einer abgasreinigungsanlage an einem mager betriebenen ottomotor Ceased WO2008022751A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06017313 2006-08-19
EP06017313.5 2006-08-19

Publications (2)

Publication Number Publication Date
WO2008022751A2 WO2008022751A2 (de) 2008-02-28
WO2008022751A3 true WO2008022751A3 (de) 2008-04-17

Family

ID=38943820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/007290 Ceased WO2008022751A2 (de) 2006-08-19 2007-08-17 Verfahren zum betreiben einer abgasreinigungsanlage an einem mager betriebenen ottomotor

Country Status (1)

Country Link
WO (1) WO2008022751A2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008001724B4 (de) 2008-05-13 2021-10-07 Robert Bosch Gmbh Verfahren und Vorrichtung zur Abgasoptimierung einer Brennkraftmaschine
DE102008047722A1 (de) 2008-09-18 2010-03-25 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Betreiben einer Abgasreinigungsanlage
FR2941874B1 (fr) * 2009-02-06 2011-12-09 Inst Francais Du Petrole Procede de traitement en depollution des oxydes d'azote contenus dans des gaz d'echappement d'un moteur a combustion interne
EP2611535B1 (de) 2010-09-02 2022-05-25 Basf Se Katalysator für benzin-magerverbrennungsmotoren mit verbesserter nichtoxidationswirkung
JP5917516B2 (ja) 2010-09-02 2016-05-18 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ Ｎｈ３−形成活性が改良された、ガソリンリーンバーンエンジンのための触媒
US8950174B2 (en) 2010-09-02 2015-02-10 Basf Se Catalysts for gasoline lean burn engines with improved NH3-formation activity
US9242242B2 (en) 2010-09-02 2016-01-26 Basf Se Catalyst for gasoline lean burn engines with improved NO oxidation activity
FR3020831B1 (fr) * 2014-05-06 2021-10-15 Peugeot Citroen Automobiles Sa Vehicule automobile a fonction de depollution a basses temperatures
FR3020830A1 (fr) * 2014-05-06 2015-11-13 Peugeot Citroen Automobiles Sa Vehicule automobile a systeme de depollution ameliore
FR3025725B1 (fr) * 2014-09-15 2019-05-24 Psa Automobiles Sa. Procede de depollution des oxydes d'azote

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10011612A1 (de) * 1999-03-11 2000-10-26 Toyota Motor Co Ltd Emissionsregelvorrichtung für einen Verbrennungsmotor
DE10113947A1 (de) * 2001-03-22 2002-09-26 Daimler Chrysler Ag Verfahren zur Verringerung des Stickoxidgehalts im Abgas einer im Mager-Fett-Wechsel betreibbaren Brennkraftmaschine
DE10152187A1 (de) * 2001-10-23 2003-04-30 Daimler Chrysler Ag Abgasreinigungsanlage mit Stickoxid-Speicherkatalysator und SCR-Katalysator und Verfahren zur Verminderung des Stickoxidgehalts im Abgas von Brennkraftmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10011612A1 (de) * 1999-03-11 2000-10-26 Toyota Motor Co Ltd Emissionsregelvorrichtung für einen Verbrennungsmotor
DE10113947A1 (de) * 2001-03-22 2002-09-26 Daimler Chrysler Ag Verfahren zur Verringerung des Stickoxidgehalts im Abgas einer im Mager-Fett-Wechsel betreibbaren Brennkraftmaschine
DE10152187A1 (de) * 2001-10-23 2003-04-30 Daimler Chrysler Ag Abgasreinigungsanlage mit Stickoxid-Speicherkatalysator und SCR-Katalysator und Verfahren zur Verminderung des Stickoxidgehalts im Abgas von Brennkraftmaschinen

Also Published As

Publication number Publication date
WO2008022751A2 (de) 2008-02-28

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