EP1054149A3 - Controller of internal combustion engine - Google Patents

Controller of internal combustion engine Download PDF

Info

Publication number
EP1054149A3
EP1054149A3 EP00110504A EP00110504A EP1054149A3 EP 1054149 A3 EP1054149 A3 EP 1054149A3 EP 00110504 A EP00110504 A EP 00110504A EP 00110504 A EP00110504 A EP 00110504A EP 1054149 A3 EP1054149 A3 EP 1054149A3
Authority
EP
European Patent Office
Prior art keywords
catalyst
controller
nox
combustion mode
rich
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.)
Withdrawn
Application number
EP00110504A
Other languages
German (de)
French (fr)
Other versions
EP1054149A2 (en
Inventor
Hiroyuki Mizuno
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 EP1054149A2 publication Critical patent/EP1054149A2/en
Publication of EP1054149A3 publication Critical patent/EP1054149A3/en
Withdrawn legal-status Critical Current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
    • F01N3/0807—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
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
    • F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
    • 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
    • F02D2200/0806—NOx storage amount, i.e. amount of NOx stored on NOx trap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/41—Control to generate negative pressure in the intake manifold, e.g. for fuel vapor purging or brake booster
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
    • F02D41/3064—Controlling fuel injection according to or using specific or several modes of combustion with special control during transition between modes

Abstract

An internal combustion engine has a reduction occlusion type NOx catalyst located in an exhaust passage for adsorbing NOx. A controller of the engine temporarily discontinues a lean combustion mode when a predetermined condition is satisfied during the lean combustion mode. When the amount of NOx adsorbed in the catalyst is greater than an acceptable value, the controller executes a rich-spike control procedure to reduce NOx adsorbed in the catalyst by temporarily switching the combustion mode of the engine to a rich combustion mode. The controller determines whether the amount of NOx adsorbed in the catalyst is greater than a predetermined determination value, which is smaller than the acceptable value, when lean combustion is discontinued. When the amount of NOx adsorbed in the catalyst is determined to be greater than the determination value, the controller executes rich-spike control procedure.
EP00110504A 1999-05-18 2000-05-17 Controller of internal combustion engine Withdrawn EP1054149A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13748699A JP3259711B2 (en) 1999-05-18 1999-05-18 Control device for internal combustion engine
JP13748699 1999-05-18

Publications (2)

Publication Number Publication Date
EP1054149A2 EP1054149A2 (en) 2000-11-22
EP1054149A3 true EP1054149A3 (en) 2002-07-17

Family

ID=15199776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00110504A Withdrawn EP1054149A3 (en) 1999-05-18 2000-05-17 Controller of internal combustion engine

Country Status (3)

Country Link
EP (1) EP1054149A3 (en)
JP (1) JP3259711B2 (en)
KR (1) KR20000077305A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3607984B2 (en) * 2000-06-26 2005-01-05 トヨタ自動車株式会社 Exhaust gas purification device for in-vehicle internal combustion engine
EP1581729B1 (en) * 2002-12-31 2008-05-28 Volkswagen Aktiengesellschaft Method for controlling an internal combustion engine and lean operating internal combustion engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07332071A (en) * 1994-04-12 1995-12-19 Toyota Motor Corp Exhaust emission control method for internal combustion engine
EP0837232A2 (en) * 1996-10-17 1998-04-22 Toyota Jidosha Kabushiki Kaisha Apparatus for controlling negative pressure in internal combustion engine
DE19716275C1 (en) * 1997-04-18 1998-09-24 Volkswagen Ag Process for reducing nitrogen oxide in the exhaust gas of an internal combustion engine
EP0903477A2 (en) * 1997-09-18 1999-03-24 Ford Global Technologies, Inc. Regeneration method of a nitrogen oxides trap in the exhaust system of an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07332071A (en) * 1994-04-12 1995-12-19 Toyota Motor Corp Exhaust emission control method for internal combustion engine
EP0837232A2 (en) * 1996-10-17 1998-04-22 Toyota Jidosha Kabushiki Kaisha Apparatus for controlling negative pressure in internal combustion engine
DE19716275C1 (en) * 1997-04-18 1998-09-24 Volkswagen Ag Process for reducing nitrogen oxide in the exhaust gas of an internal combustion engine
EP0903477A2 (en) * 1997-09-18 1999-03-24 Ford Global Technologies, Inc. Regeneration method of a nitrogen oxides trap in the exhaust system of an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30) *

Also Published As

Publication number Publication date
KR20000077305A (en) 2000-12-26
JP2000328984A (en) 2000-11-28
JP3259711B2 (en) 2002-02-25
EP1054149A2 (en) 2000-11-22

Similar Documents

Publication Publication Date Title
EP1067277B1 (en) Exhaust emission control device for internal combustion engines
JP4487982B2 (en) Exhaust gas purification system for internal combustion engine
EP1083324A3 (en) Control system for self-ignition type gasoline engine
EP1134368A3 (en) Method and system for reducing NOx tailpipe emissions of a lean-burn internation combustion engine
EP1164266A3 (en) Method of optimizing reductant addition to an SCR catalyst coupled to an internation combustion engine
EP1156201A3 (en) Internal combustion engine and method for controlling the internal combustion engine
EP1061239A3 (en) Combustion control apparatus for internal combustion engine
EP1028243A2 (en) Control apparatus for direct injection engine
EP0828068A3 (en) Apparatus and method for purifying exhaust gas in an internal combustion engine
EP1136682A3 (en) Internal combustion engine having variable valve control system and NOx catalyst
EP1167726A3 (en) Air-fuel ratio control apparatus of internal combustion engine
EP0878609A3 (en) An exhaust gas purification device for an internal combustion engine
EP1375877A3 (en) Regeneration of particulate filter
EP1223323A3 (en) Apparatus and method for controlling vehicle so as to purify exhaust emission from engine
WO1999027243A3 (en) Integrated lost motion system for retarding and egr
EP1291510A3 (en) Apparatus and method for emission control of an internal combustion engine
JP2004068624A (en) Exhaust purification apparatus and method for internal combustion engine
JP2003166439A (en) Internal combustion engine
EP1087119A4 (en) Exhaust emission control device of internal combustion engines
EP1344910A3 (en) Exhaust-emission purifying apparatus for internal combustion engine
EP0924419A3 (en) Combustion changeover control for engine
JP3870430B2 (en) In-cylinder internal combustion engine
EP1496234A3 (en) Combustion control apparatus for internal combustion engine
EP1195507A3 (en) Air-fuel ratio control apparatus of internal combustion engine
EP1176289A3 (en) Emission control system of internal combustion engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000517

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17Q First examination report despatched

Effective date: 20020919

AKX Designation fees paid

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030130