DE602005006545D1 - Method for operating an exhaust gas purification system - Google Patents

Method for operating an exhaust gas purification system

Info

Publication number
DE602005006545D1
DE602005006545D1 DE602005006545T DE602005006545T DE602005006545D1 DE 602005006545 D1 DE602005006545 D1 DE 602005006545D1 DE 602005006545 T DE602005006545 T DE 602005006545T DE 602005006545 T DE602005006545 T DE 602005006545T DE 602005006545 D1 DE602005006545 D1 DE 602005006545D1
Authority
DE
Germany
Prior art keywords
exhaust gas
conditions
operating
gas purification
adsorbing unit
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.)
Active
Application number
DE602005006545T
Other languages
German (de)
Inventor
Claes Oestberg
Roger Tengblad
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Publication of DE602005006545D1 publication Critical patent/DE602005006545D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

The invention concerns a method for operating an exhaust gas purification system, said system comprising a controllable internal combustion engine adapted to predominantly operate under lean conditions, and a NO x -adsorbing unit capable of storing NO x during lean conditions and converting NO x into N 2 during rich or stoichiometric conditions, said system having a capability of oxidizing HC and CO and reducing NO x under stoichiometric conditions. The invention is characterized in that the method comprises the steps of determining a representation of a mass flow of NO x in the exhaust gas and a current storage capacity of the NO x -adsorbing unit, and switching engine operation mode between lean conditions and stoichiometric conditions depending on the representation of the NO x mass flow in the exhaust gas and the current storage capacity of the NO x -adsorbing unit.
DE602005006545T 2005-06-17 2005-06-17 Method for operating an exhaust gas purification system Active DE602005006545D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05105379A EP1734240B1 (en) 2005-06-17 2005-06-17 Method for operating an exhaust gas purification system

Publications (1)

Publication Number Publication Date
DE602005006545D1 true DE602005006545D1 (en) 2008-06-19

Family

ID=35376975

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005006545T Active DE602005006545D1 (en) 2005-06-17 2005-06-17 Method for operating an exhaust gas purification system

Country Status (3)

Country Link
EP (1) EP1734240B1 (en)
AT (1) ATE394589T1 (en)
DE (1) DE602005006545D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2927119B1 (en) * 2008-02-04 2010-03-05 Renault Sas METHOD FOR MANAGING AN EXHAUST GAS POST-TREATMENT DEVICE INCLUDING A LOW FREQUENCY MODE AND A HIGH FREQUENCY MODE FOR ALTERING STORAGE AND PURGE PHASES
JP6156278B2 (en) * 2014-07-28 2017-07-05 トヨタ自動車株式会社 Control device for internal combustion engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6829885B2 (en) * 2001-11-19 2004-12-14 Ford Global Technologies, Llc Nox trap efficiency
US20040031261A1 (en) * 2002-08-13 2004-02-19 Jing Sun System and method for lean NOx trap control and diagnosis
DE10241499B4 (en) * 2002-09-07 2004-09-09 Audi Ag Method for determining the degree of aging of a nitrogen oxide storage catalytic converter of an internal combustion engine, in particular a motor vehicle
DE10318116B4 (en) * 2003-04-22 2012-02-23 Robert Bosch Gmbh Method for operating an internal combustion engine, in particular a motor vehicle, computer program, control unit and internal combustion engine

Also Published As

Publication number Publication date
ATE394589T1 (en) 2008-05-15
EP1734240B1 (en) 2008-05-07
EP1734240A1 (en) 2006-12-20

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