EP1515029A3 - Exhaust purification system of an internal combustion engine - Google Patents

Exhaust purification system of an internal combustion engine Download PDF

Info

Publication number
EP1515029A3
EP1515029A3 EP04021239A EP04021239A EP1515029A3 EP 1515029 A3 EP1515029 A3 EP 1515029A3 EP 04021239 A EP04021239 A EP 04021239A EP 04021239 A EP04021239 A EP 04021239A EP 1515029 A3 EP1515029 A3 EP 1515029A3
Authority
EP
European Patent Office
Prior art keywords
nox catalyst
concentration
combustion engine
internal combustion
purification system
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
EP04021239A
Other languages
German (de)
French (fr)
Other versions
EP1515029A2 (en
EP1515029B1 (en
Inventor
Nobuki Kobayashi
Tatsumasa Sugiyama
Jun Tahara
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP1515029A2 publication Critical patent/EP1515029A2/en
Publication of EP1515029A3 publication Critical patent/EP1515029A3/en
Application granted granted Critical
Publication of EP1515029B1 publication Critical patent/EP1515029B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0611—Fuel type, fuel composition or fuel quality
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0818—SOx storage amount, e.g. for SOx trap or NOx trap

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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

In an exhaust purification system of an internal combustion engine (1) that includes a NOx catalyst (16) for occluding and reducing NOx in exhaust, when removing SOx deposited in the NOx catalyst, a concentration of sulfur in a fuel is detected, and an amount of SOx deposited in the NOx catalyst is estimated taking into consideration the concentration of sulfur in the fuel. Further, an air-fuel ratio of exhaust flowing into the NOx catalyst (16) is changed to a richer side air-fuel ratio depending on a decrease in the estimated SOx amount, thereby adjusting an HC concentration of exhaust flowing out from the NOx catalyst (16) to a level equal to or less than a permissible HC concentration.
EP20040021239 2003-09-12 2004-09-07 Exhaust purification system of an internal combustion engine Expired - Fee Related EP1515029B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003321408 2003-09-12
JP2003321408A JP4241279B2 (en) 2003-09-12 2003-09-12 Exhaust gas purification system for internal combustion engine

Publications (3)

Publication Number Publication Date
EP1515029A2 EP1515029A2 (en) 2005-03-16
EP1515029A3 true EP1515029A3 (en) 2006-06-07
EP1515029B1 EP1515029B1 (en) 2009-02-25

Family

ID=34132053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040021239 Expired - Fee Related EP1515029B1 (en) 2003-09-12 2004-09-07 Exhaust purification system of an internal combustion engine

Country Status (4)

Country Link
EP (1) EP1515029B1 (en)
JP (1) JP4241279B2 (en)
DE (1) DE602004019609D1 (en)
ES (1) ES2318225T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2905144B1 (en) * 2006-08-24 2008-10-31 Renault Sas SYSTEM FOR DESULFURIZING A CATALYTIC TRAPPING DEVICE OF NITROGEN OXIDES IN THE EXHAUST LINE OF AN INTERNAL COMBUSTION ENGINE
JP4765992B2 (en) * 2007-04-24 2011-09-07 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
JP4816606B2 (en) 2007-09-18 2011-11-16 トヨタ自動車株式会社 Exhaust gas purification system for internal combustion engine
JP4396760B2 (en) 2007-11-08 2010-01-13 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
JP4986915B2 (en) * 2008-04-16 2012-07-25 三菱ふそうトラック・バス株式会社 Exhaust purification device
JP4986973B2 (en) * 2008-10-23 2012-07-25 三菱ふそうトラック・バス株式会社 Exhaust purification device
JP5705676B2 (en) * 2011-07-27 2015-04-22 株式会社日本自動車部品総合研究所 Exhaust gas purification device for internal combustion engine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0971101A2 (en) * 1998-07-07 2000-01-12 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an internal combustion engine
DE19910664A1 (en) * 1999-03-11 2000-09-14 Volkswagen Ag Process for the de-sulfation of a NOx storage catalytic converter
JP2000274229A (en) * 1999-03-23 2000-10-03 Mitsubishi Motors Corp Exhaust emission control device for internal combustion engine
DE10103557A1 (en) * 2001-01-26 2002-09-19 Volkswagen Ag Removing sulfur from catalyst device connected to lean-burn internal combustion engine comprises slightly greasing engine exhaust gas on exceeding lowest possible temperature and lowest sulfur charge of catalyst device
DE10126455A1 (en) * 2001-05-31 2002-12-12 Daimler Chrysler Ag Process for the desulfation of a nitrogen oxide storage catalytic converter
EP1471219A1 (en) * 2003-04-25 2004-10-27 Toyota Jidosha Kabushiki Kaisha Exhaust gas cleaning system and SOx poisoning recovery method for internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0971101A2 (en) * 1998-07-07 2000-01-12 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an internal combustion engine
DE19910664A1 (en) * 1999-03-11 2000-09-14 Volkswagen Ag Process for the de-sulfation of a NOx storage catalytic converter
JP2000274229A (en) * 1999-03-23 2000-10-03 Mitsubishi Motors Corp Exhaust emission control device for internal combustion engine
DE10103557A1 (en) * 2001-01-26 2002-09-19 Volkswagen Ag Removing sulfur from catalyst device connected to lean-burn internal combustion engine comprises slightly greasing engine exhaust gas on exceeding lowest possible temperature and lowest sulfur charge of catalyst device
DE10126455A1 (en) * 2001-05-31 2002-12-12 Daimler Chrysler Ag Process for the desulfation of a nitrogen oxide storage catalytic converter
EP1471219A1 (en) * 2003-04-25 2004-10-27 Toyota Jidosha Kabushiki Kaisha Exhaust gas cleaning system and SOx poisoning recovery method for internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 13 5 February 2001 (2001-02-05) *

Also Published As

Publication number Publication date
JP2005090253A (en) 2005-04-07
JP4241279B2 (en) 2009-03-18
EP1515029A2 (en) 2005-03-16
DE602004019609D1 (en) 2009-04-09
ES2318225T3 (en) 2009-05-01
EP1515029B1 (en) 2009-02-25

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