WO2008022751A3 - Procédé de gestion d'une installation d'épuration des gaz d'échappement d'un moteur à essence fonctionnant en conditions pauvres - Google Patents

Procédé de gestion d'une installation d'épuration des gaz d'échappement d'un moteur à essence fonctionnant en conditions pauvres 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
Application number
PCT/EP2007/007290
Other languages
German (de)
English (en)
Other versions
WO2008022751A2 (fr
Inventor
Susanne Philipp
Torsten Franke
Stephan Eckhoff
Wilfried Mueller
Thomas Kreuzer
Hubert Bichler
Rainer Zimmer
Christof Schoen
Original Assignee
Umicore Ag & Co Kg
Bayerische Motoren Werke Ag
Daimlerchrisler Ag
Susanne Philipp
Torsten Franke
Stephan Eckhoff
Wilfried Mueller
Thomas Kreuzer
Hubert Bichler
Rainer Zimmer
Christof Schoen
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 Umicore Ag & Co Kg, Bayerische Motoren Werke Ag, Daimlerchrisler Ag, Susanne Philipp, Torsten Franke, Stephan Eckhoff, Wilfried Mueller, Thomas Kreuzer, Hubert Bichler, Rainer Zimmer, Christof Schoen filed Critical Umicore Ag & Co Kg
Publication of WO2008022751A2 publication Critical patent/WO2008022751A2/fr
Publication of WO2008022751A3 publication Critical patent/WO2008022751A3/fr

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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
    • F01N3/10—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 ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. 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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 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

Selon l'invention, pour éliminer les oxydes d'azote présents dans les gaz d'échappement d'un moteur travaillant en conditions pauvres, on connaît la technique qui consiste à utiliser une installation d'épuration des gaz d'échappement constituée d'un catalyseur-accumulateur d'oxydes d'azote et d'un catalyseur SCR et de faire travailler le moteur en alternance avec des mélanges pauvres et des mélanges riches d'air et de carburant. L'ammoniac nécessaire pour la réaction SCR y est formé pendant la régénération du catalyseur-accumulateur d'oxydes d'azote. Un désavantage en est qu'à haute température, on ne forme plus suffisamment d'ammoniac lors de la régénération. L'invention concerne donc, lorsque la température des gaz d'échappement est supérieure à environ 350 °C, l'injection d'ammoniac en amont du catalyseur SCR. Lorsque la température des gaz d'échappement est inférieure à 350 °C, on interrompt l'injection d'ammoniac. Le procédé convient particulièrement bien pour des moteurs travaillant en conditions pauvres et dotés d'une injection directe d'essence en jet, mais qui peuvent aussi travailler sous forte charge avec un mélange pauvre d'air et de carburant.
PCT/EP2007/007290 2006-08-19 2007-08-17 procédé de gestion d'une installation d'épuration des gaz d'échappement d'un moteur à essence fonctionnant en conditions pauvres WO2008022751A2 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=38943820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/007290 WO2008022751A2 (fr) 2006-08-19 2007-08-17 procédé de gestion d'une installation d'épuration des gaz d'échappement d'un moteur à essence fonctionnant en conditions pauvres

Country Status (1)

Country Link
WO (1) WO2008022751A2 (fr)

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
US8950174B2 (en) 2010-09-02 2015-02-10 Basf Se Catalysts for gasoline lean burn engines with improved NH3-formation activity
WO2012029050A1 (fr) 2010-09-02 2012-03-08 Basf Se Catalyseur pour moteurs à essence à mélange pauvre, à oxydation de no améliorée
CN103201032B (zh) 2010-09-02 2016-03-30 巴斯夫欧洲公司 具有改进nh3形成活性的汽油稀燃发动机用催化剂
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

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

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