KR960034673A - 질소 산화물 흡수제의 열화 검출장치 - Google Patents

질소 산화물 흡수제의 열화 검출장치 Download PDF

Info

Publication number
KR960034673A
KR960034673A KR1019960007161A KR19960007161A KR960034673A KR 960034673 A KR960034673 A KR 960034673A KR 1019960007161 A KR1019960007161 A KR 1019960007161A KR 19960007161 A KR19960007161 A KR 19960007161A KR 960034673 A KR960034673 A KR 960034673A
Authority
KR
South Korea
Prior art keywords
absorbent
air
fuel ratio
amount
lean
Prior art date
Application number
KR1019960007161A
Other languages
English (en)
Other versions
KR0165951B1 (ko
Inventor
다카미츠 아사누마
데츠로 기하라
겐지 가토
사토시 이구치
신이치 다케시마
도시아키 다나카
Original Assignee
와다 아키히로
도요타 지도샤 가부시키가이샤
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 와다 아키히로, 도요타 지도샤 가부시키가이샤 filed Critical 와다 아키히로
Publication of KR960034673A publication Critical patent/KR960034673A/ko
Application granted granted Critical
Publication of KR0165951B1 publication Critical patent/KR0165951B1/ko

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9495—Controlling the catalytic process
    • 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
    • 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/03—Monitoring or diagnosing the deterioration of exhaust systems of sorbing activity of adsorbents or absorbents
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • 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
    • F02D2200/0808—NOx storage capacity, i.e. maximum amount of NOx that can be 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
    • 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
    • F02D2200/0814—Oxygen storage amount
    • 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
    • F02D2200/0816—Oxygen storage capacity
    • 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
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • 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
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

본 발명의 목적은 NOx흡수제의 O2스트레지 기능의 저하 및 NOx흡수 능력의 저하를 검출하는 것으로 기관 배기 통로내에 NOx흡수제(18)를 배치한다. NOx흡수제(18)하류의 기관 배기 통로내에 공연비에 비례한 전류가 발생하는 O2센서(22)를 배치한다. NOx흡수제(18)에 흡수되어 있는 NOx량의 거의 영인 때 혹은 NOx흡수제(18)에 흡수되어 있는 NOx량을 거의 영으로 한 후 혼합기의 공연비를 린에서 리치로 변환하고 이때의 O2센서(22)의 출력 신호에서 NOx흡수제(18)에 저장되어 있던 산소량을 검출한다. 또한 상기 검출된 산소량을 사용하여 NOx흡수 능력을 구한다.

Description

질소 산화물 흡수제의 열화 검출장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 내연기관의 전체도, 제12도는 O2스트레지 량을 검출하기 위한 흐름도, 제13도는 공연비를 제어하기 위한 흐름도, 제14도는 공연비를 제어하기 위한 흐름도, 제15도는 공연비를 제어하기 위한 흐름도,제16도는 피드백 제어 Ⅰ를 실행하기 위한 흐름도.

Claims (5)

  1. 유입되는 배기 가스의 공연비가 린(희박)인 때에 NOx를 흡수함과 동시에 산소를 저장하고, 유입되는 배기가스의 공연비가 리치(농후)가 되면 흡수한 NOx및 저장한 산소를 방출하는 NOx흡수제를 기관 배기 통로내에 배치하고, NOx흡수제 하류의 기관 배기 통로내에 공연비에 따른 출력신호를 발생하는 공연비 센서를 배치하고, NOx흡수제에 흡수되어 있는 NOx량이 대부분 영인 때에 NOx흡수제로 유입되는 배기 가스의 공연비를 린에서 리치로 변환하는 공연비 변환 수단과, NOx흡수제로 유입되는 배기가스의 공연비를 린에서 리치로 변환한 후의 공연비 센서의 출력 신호에 의거하여 NOx흡수제에 저장되어 있는 산소량을 검출하는 저장 산소량 검출 수단을 구비한 것을 특징으로 하는 질소 산화물 (NOx)흡수제의 열화 검출장치.
  2. 제1항에 있어서, 상기 공연비 변환 수단은 NOx흡수제에 흡수되어 있는 NOx량을 대부분 영으로 하기 위하여 NOx 흡수제로 유입되는 배기가스의 공연비를 일시적으로 린에서 리치로 변환함과 동시에 , 그후 일시적으로 린으로 유지한 후에 재차 린에서 리치로 변환하고, 상기 저장 산소량 검출 수단은 린에서 리치로 2번째의 변환 후 공연비 센서의 출력 신호에 의거하여 NOx흡수제에 저장되어 있는 산소량을 검출하는 것을 특징으로 하는질소 산화물 (NOx) 흡수제의 열화 검출장치.
  3. 제1항에 있어서, NOx흡수제에 흡수되어 있는 NOx량을 대부분 영인지 아닌지 판단하는 판단 수단을 구비하고, 린 혼합기가 연소되고 있을 때에 상기 판단 수단에 의해 NOx흡수제에 흡수되어 있는 NOx가 대부분 영이라고 판단된 때에는, 공연비 변환 수단에 의해 NOx흡수제에 유입되는 배기 가스의 공연비를 린에서 리치로 변환하고, 저장 산소량 검출 수단은 상기 린에서 리치로의 변환 후의 공연비 센서의 출력 신호에 의거하여 NOx흡수제에 저장되어 있는 것을 특징으로 하는질소 산화물 (NOx)흡수제의 열화 검출장치.
  4. 제1항에 있어서, NOx흡수제에 흡수되어 있는 NOx량이 대부분 영인지 아닌지 판단하는 판단 수단을 구비하고, 대부분 이론 공연비의 혼합기가 연소되고 있을 때에 당해 판단 수단에 의해 NOx흡수제에 흡수되어 있는 NOx가 대부분 영이라고 판단된 때에는, 공연비 변환 수단에 의해 NOx흡수제에 유입되는 배기 가스의 공연비를 대부분 이론 공연비에서 린으로 변환함과 동시에, 그후 일시적으로 린으로 유지한 후에 린에서 리치로 변환하고, 저장 산소량 검출 수단은 상기 린에서 리치로의 변환후의 공연비 센서의 출력 신호에 의거하여 NOx흡수제에 저장되어 있는 것을 특징으로 하는질소 산화물 (NOx) 흡수제의 열화 검출장치.
  5. 제1항에 있어서, 상기 공연비 변환 수단에 의해 NOx흡수제로 유입되는 배기 가스의 공연비가, 린에서 리치로의 변환된 후의 공연비 센서의 출력 신호에 의거하여 NOx흡수제에 저장되어 있는 산소량과 NOx흡수제에 흡수되어 있는 NOx량과의 합을 검출하는 저장 산소량 및 흡수NOx량 검출 수단을 구비하고, 상기 산소량과 NOx량의 합에서 상기 저장 산소량 검출 수단에 의해 검출된 산소량을 감산함으로서, NOx흡수제에 흡수되어 있는 NOx량을 산출하도록 한 것을 특징으로 하는 질소 산화물 흡수제의 열화 검출장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960007161A 1995-03-28 1996-03-18 질소 산화물 흡수제의 열화 검출장치 KR0165951B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7069703A JP2827954B2 (ja) 1995-03-28 1995-03-28 ＮＯｘ 吸収剤の劣化検出装置
JP95-69703 1995-03-28

Publications (2)

Publication Number Publication Date
KR960034673A true KR960034673A (ko) 1996-10-24
KR0165951B1 KR0165951B1 (ko) 1999-01-15

Family

ID=13410480

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960007161A KR0165951B1 (ko) 1995-03-28 1996-03-18 질소 산화물 흡수제의 열화 검출장치

Country Status (5)

Country Link
US (1) US5713199A (ko)
EP (2) EP0735250B1 (ko)
JP (1) JP2827954B2 (ko)
KR (1) KR0165951B1 (ko)
DE (2) DE69633204T2 (ko)

Families Citing this family (118)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3674017B2 (ja) * 1996-03-19 2005-07-20 株式会社デンソー 排出ガス浄化用触媒劣化検出装置
JPH1071325A (ja) * 1996-06-21 1998-03-17 Ngk Insulators Ltd エンジン排ガス系の制御方法および触媒／吸着手段の劣化検出方法
DE19629163C1 (de) * 1996-07-19 1997-10-09 Daimler Benz Ag Verfahren und Vorrichtung zum stickoxidemissionsarmen Betrieb eines Verbrennungsmotors
US5771685A (en) * 1996-10-16 1998-06-30 Ford Global Technologies, Inc. Method for monitoring the performance of a NOx trap
US5743084A (en) * 1996-10-16 1998-04-28 Ford Global Technologies, Inc. Method for monitoring the performance of a nox trap
US5894725A (en) * 1997-03-27 1999-04-20 Ford Global Technologies, Inc. Method and apparatus for maintaining catalyst efficiency of a NOx trap
JP3709655B2 (ja) * 1997-06-09 2005-10-26 日産自動車株式会社 内燃機関の排気浄化装置
JP3430879B2 (ja) * 1997-09-19 2003-07-28 トヨタ自動車株式会社 内燃機関の排気浄化装置
US6138453A (en) * 1997-09-19 2000-10-31 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an internal combustion engine
DE19755600C2 (de) * 1997-12-15 2002-01-17 Bosch Gmbh Robert Betrieb eines Verbrennungsmotors in Verbindungmit einem NOx-Speicherkatalysator
DE19800665C1 (de) 1998-01-10 1999-07-01 Degussa Verfahren zum Betreiben eines Stickoxid-Speicherkatalysators
DE19801625A1 (de) * 1998-01-17 1999-07-22 Bosch Gmbh Robert Diagnose eines NOx-Speicherkatalysators beim Betrieb von Verbrennungsmotoren
DE19801626B4 (de) * 1998-01-17 2010-08-12 Robert Bosch Gmbh Diagnose eines NOx-Speicherkatalysators beim Betrieb von Verbrennungsmotoren
DE19808382A1 (de) 1998-02-27 1999-09-02 Volkswagen Ag Steuerung eines NOx-Absorber-Katalysator
DE19816175A1 (de) * 1998-04-14 1999-10-21 Degussa Verfahren zur Überprüfung der Funktionstüchtigkeit eines Stickoxid-Speicherkatalysators
DE19823921A1 (de) * 1998-05-28 1999-12-02 Siemens Ag Verfahren zur Überprüfung des Wirkungsgrades eines NOx-Speicherkatalysators
DE59910881D1 (de) * 1998-06-20 2004-11-25 Daimler Chrysler Ag Regelstrategie für einen NOx-Speicher
JP4159656B2 (ja) * 1998-06-24 2008-10-01 本田技研工業株式会社 内燃機関の空燃比制御装置
US6205773B1 (en) * 1998-07-07 2001-03-27 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an internal combustion engine
US6244046B1 (en) * 1998-07-17 2001-06-12 Denso Corporation Engine exhaust purification system and method having NOx occluding and reducing catalyst
JP3228232B2 (ja) * 1998-07-28 2001-11-12 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE19843879C2 (de) * 1998-09-25 2003-05-08 Bosch Gmbh Robert Betrieb eines Verbrennungsmotors in Verbindung mit einem NOx-Speicherkatalysator und einem NOx-Sensor
DE69923403T2 (de) * 1998-10-14 2005-07-07 Nissan Motor Co., Ltd., Yokohama Abgasreinigungseinrichtung
JP3572961B2 (ja) * 1998-10-16 2004-10-06 日産自動車株式会社 エンジンの排気浄化装置
US6497092B1 (en) 1999-03-18 2002-12-24 Delphi Technologies, Inc. NOx absorber diagnostics and automotive exhaust control system utilizing the same
JP3618598B2 (ja) * 1999-06-03 2005-02-09 本田技研工業株式会社 内燃機関の排気浄化装置
DE19926148A1 (de) * 1999-06-09 2000-12-14 Volkswagen Ag Verfahren zur Erhöhung der NOx-Umsatzrate von geschädigten NOx-Speicherkatalysatoren
JP3570297B2 (ja) * 1999-06-10 2004-09-29 株式会社日立製作所 エンジン排気浄化装置
JP3854013B2 (ja) * 1999-06-10 2006-12-06 三菱電機株式会社 内燃機関の排出ガス浄化装置
DE19929042A1 (de) * 1999-06-25 2000-12-28 Audi Ag Verfahren zur Steuerung der Regenerationsphasen eines NO¶x¶-Speicherkatalysators
CA2322915C (en) * 1999-10-12 2004-12-14 Honda Giken Kogyo Kabushiki Kaisha Exhaust emission control system for internal combustion engine
DE19951544C1 (de) * 1999-10-26 2000-12-07 Siemens Ag Verfahren zur Steuerung des Betriebs eines NOx-Speicherkatalysators
JP4378819B2 (ja) 2000-01-18 2009-12-09 マツダ株式会社 エンジンの排気浄化装置
DE10003219A1 (de) * 2000-01-26 2001-08-02 Volkswagen Ag Verfahren und Vorrichtung zur Regelung eines in einem Abgaskanal einer Verbrennungskraftmaschine angeordneten NOx-Speicherkatalysators
JP3858554B2 (ja) 2000-02-23 2006-12-13 株式会社日立製作所 エンジン排気浄化装置
US6487849B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method and apparatus for controlling lean-burn engine based upon predicted performance impact and trap efficiency
US6499293B1 (en) 2000-03-17 2002-12-31 Ford Global Technologies, Inc. Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine
US6477832B1 (en) 2000-03-17 2002-11-12 Ford Global Technologies, Inc. Method for improved performance of a vehicle having an internal combustion engine
US6427437B1 (en) 2000-03-17 2002-08-06 Ford Global Technologies, Inc. Method for improved performance of an engine emission control system
US6843051B1 (en) 2000-03-17 2005-01-18 Ford Global Technologies, Llc Method and apparatus for controlling lean-burn engine to purge trap of stored NOx
US6860100B1 (en) * 2000-03-17 2005-03-01 Ford Global Technologies, Llc Degradation detection method for an engine having a NOx sensor
US6594989B1 (en) 2000-03-17 2003-07-22 Ford Global Technologies, Llc Method and apparatus for enhancing fuel economy of a lean burn internal combustion engine
US6810659B1 (en) * 2000-03-17 2004-11-02 Ford Global Technologies, Llc Method for determining emission control system operability
US6327847B1 (en) 2000-03-17 2001-12-11 Ford Global Technologies, Inc. Method for improved performance of a vehicle
US6360530B1 (en) 2000-03-17 2002-03-26 Ford Global Technologies, Inc. Method and apparatus for measuring lean-burn engine emissions
US6374597B1 (en) 2000-03-17 2002-04-23 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6487850B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method for improved engine control
US6481199B1 (en) 2000-03-17 2002-11-19 Ford Global Technologies, Inc. Control for improved vehicle performance
US6629453B1 (en) 2000-03-17 2003-10-07 Ford Global Technologies, Llc Method and apparatus for measuring the performance of an emissions control device
US6308515B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6539704B1 (en) 2000-03-17 2003-04-01 Ford Global Technologies, Inc. Method for improved vehicle performance
US6308697B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method for improved air-fuel ratio control in engines
US6708483B1 (en) 2000-03-17 2004-03-23 Ford Global Technologies, Llc Method and apparatus for controlling lean-burn engine based upon predicted performance impact
US6434930B1 (en) 2000-03-17 2002-08-20 Ford Global Technologies, Inc. Method and apparatus for controlling lean operation of an internal combustion engine
US6360529B1 (en) 2000-03-17 2002-03-26 Ford Global Technologies, Inc. Method and apparatus for enabling lean engine operation upon engine start-up
US6438944B1 (en) 2000-03-17 2002-08-27 Ford Global Technologies, Inc. Method and apparatus for optimizing purge fuel for purging emissions control device
US6370868B1 (en) 2000-04-04 2002-04-16 Ford Global Technologies, Inc. Method and system for purge cycle management of a lean NOx trap
FR2808560B1 (fr) * 2000-05-04 2002-12-06 Peugeot Citroen Automobiles Sa Procede de detection de l'etat d'un catalyseur integre dans une ligne d'echappement d'un moteur a combustion interne
DE10036406A1 (de) 2000-07-26 2002-02-14 Bosch Gmbh Robert Verfahren zum Betreiben eines Stickoxid (NOx)-Speicherkatalysators
US6389803B1 (en) 2000-08-02 2002-05-21 Ford Global Technologies, Inc. Emission control for improved vehicle performance
US6418711B1 (en) 2000-08-29 2002-07-16 Ford Global Technologies, Inc. Method and apparatus for estimating lean NOx trap capacity
US6691507B1 (en) 2000-10-16 2004-02-17 Ford Global Technologies, Llc Closed-loop temperature control for an emission control device
US6698188B2 (en) * 2000-12-08 2004-03-02 Toyota Jidosha Kabushiki Kaisha Emission control apparatus of internal combustion engine
FR2824872B1 (fr) * 2001-05-18 2006-01-06 Volkswagen Ag PROCEDE DE DETERMINATION D'UN ETAT DE CHARGE D'UN CATALYSEUR D'ACCUMULATION DES NOx
US6912842B2 (en) 2001-06-19 2005-07-05 Ford Global Technologies, Inc. Oxygen storage capacity estimation
US6467259B1 (en) 2001-06-19 2002-10-22 Ford Global Technologies, Inc. Method and system for operating dual-exhaust engine
US6691020B2 (en) 2001-06-19 2004-02-10 Ford Global Technologies, Llc Method and system for optimizing purge of exhaust gas constituent stored in an emission control device
US6502387B1 (en) 2001-06-19 2003-01-07 Ford Global Technologies, Inc. Method and system for controlling storage and release of exhaust gas constituents in an emission control device
US6615577B2 (en) 2001-06-19 2003-09-09 Ford Global Technologies, Llc Method and system for controlling a regeneration cycle of an emission control device
US6453666B1 (en) 2001-06-19 2002-09-24 Ford Global Technologies, Inc. Method and system for reducing vehicle tailpipe emissions when operating lean
US6546718B2 (en) 2001-06-19 2003-04-15 Ford Global Technologies, Inc. Method and system for reducing vehicle emissions using a sensor downstream of an emission control device
US6594985B2 (en) 2001-06-19 2003-07-22 Ford Global Technologies, Inc. Exhaust gas aftertreatment device efficiency estimation
US6694244B2 (en) 2001-06-19 2004-02-17 Ford Global Technologies, Llc Method for quantifying oxygen stored in a vehicle emission control device
US6553754B2 (en) 2001-06-19 2003-04-29 Ford Global Technologies, Inc. Method and system for controlling an emission control device based on depletion of device storage capacity
US6650991B2 (en) 2001-06-19 2003-11-18 Ford Global Technologies, Llc Closed-loop method and system for purging a vehicle emission control
US6487853B1 (en) 2001-06-19 2002-12-03 Ford Global Technologies. Inc. Method and system for reducing lean-burn vehicle emissions using a downstream reductant sensor
US6490860B1 (en) 2001-06-19 2002-12-10 Ford Global Technologies, Inc. Open-loop method and system for controlling the storage and release cycles of an emission control device
US6591604B2 (en) 2001-06-19 2003-07-15 Ford Global Technologies, Llc Oxygen storage capacity estimation
US6539706B2 (en) 2001-06-19 2003-04-01 Ford Global Technologies, Inc. Method and system for preconditioning an emission control device for operation about stoichiometry
US6463733B1 (en) 2001-06-19 2002-10-15 Ford Global Technologies, Inc. Method and system for optimizing open-loop fill and purge times for an emission control device
US6594986B2 (en) * 2001-06-19 2003-07-22 Ford Global Technologies, Inc. Oxidant storage capacity estimation
US6604504B2 (en) 2001-06-19 2003-08-12 Ford Global Technologies, Llc Method and system for transitioning between lean and stoichiometric operation of a lean-burn engine
LU90795B1 (en) * 2001-06-27 2002-12-30 Delphi Tech Inc Nox release index
US6735938B2 (en) 2002-06-04 2004-05-18 Ford Global Technologies, Llc Method to control transitions between modes of operation of an engine
US7111450B2 (en) * 2002-06-04 2006-09-26 Ford Global Technologies, Llc Method for controlling the temperature of an emission control device
US6745747B2 (en) 2002-06-04 2004-06-08 Ford Global Technologies, Llc Method for air-fuel ratio control of a lean burn engine
US6736121B2 (en) 2002-06-04 2004-05-18 Ford Global Technologies, Llc Method for air-fuel ratio sensor diagnosis
US6568177B1 (en) 2002-06-04 2003-05-27 Ford Global Technologies, Llc Method for rapid catalyst heating
US6715462B2 (en) 2002-06-04 2004-04-06 Ford Global Technologies, Llc Method to control fuel vapor purging
US6769398B2 (en) 2002-06-04 2004-08-03 Ford Global Technologies, Llc Idle speed control for lean burn engine with variable-displacement-like characteristic
US7032572B2 (en) * 2002-06-04 2006-04-25 Ford Global Technologies, Llc Method for controlling an engine to obtain rapid catalyst heating
US6758185B2 (en) * 2002-06-04 2004-07-06 Ford Global Technologies, Llc Method to improve fuel economy in lean burn engines with variable-displacement-like characteristics
US6725830B2 (en) 2002-06-04 2004-04-27 Ford Global Technologies, Llc Method for split ignition timing for idle speed control of an engine
US6925982B2 (en) 2002-06-04 2005-08-09 Ford Global Technologies, Llc Overall scheduling of a lean burn engine system
US6736120B2 (en) * 2002-06-04 2004-05-18 Ford Global Technologies, Llc Method and system of adaptive learning for engine exhaust gas sensors
US6868827B2 (en) 2002-06-04 2005-03-22 Ford Global Technologies, Llc Method for controlling transitions between operating modes of an engine for rapid heating of an emission control device
US7168239B2 (en) * 2002-06-04 2007-01-30 Ford Global Technologies, Llc Method and system for rapid heating of an emission control device
DE10241500B4 (de) * 2002-09-07 2004-08-12 Audi Ag Verfahren zum Betreiben eines Stickoxid-Speicherkatalysators einer Brennkraftmaschine insbesondere eines Kraftfahrzeuges
JP4304428B2 (ja) * 2003-02-07 2009-07-29 いすゞ自動車株式会社 内燃機関の排気ガス浄化システム
US6826902B2 (en) * 2003-03-18 2004-12-07 Ford Global Technologies, Llc Method and apparatus for estimating oxygen storage capacity and stored NOx in a lean NOx trap (LNT)
JP4042690B2 (ja) * 2003-12-16 2008-02-06 トヨタ自動車株式会社 内燃機関の触媒劣化診断装置
US7111451B2 (en) * 2004-09-16 2006-09-26 Delphi Technologies, Inc. NOx adsorber diagnostics and automotive exhaust control system utilizing the same
JP2006090238A (ja) 2004-09-24 2006-04-06 Mitsubishi Fuso Truck & Bus Corp ＮＯｘ吸蔵触媒の吸蔵量推定装置及び吸蔵量推定方法
JP3969417B2 (ja) * 2004-10-15 2007-09-05 トヨタ自動車株式会社 内燃機関の排気浄化システム。
JP4215050B2 (ja) * 2005-12-15 2009-01-28 トヨタ自動車株式会社 内燃機関の排気浄化システム
JP4613894B2 (ja) * 2006-08-02 2011-01-19 株式会社デンソー 内燃機関用排気浄化装置
JP4832209B2 (ja) * 2006-08-14 2011-12-07 トヨタ自動車株式会社 触媒劣化診断装置
JP4737010B2 (ja) * 2006-08-30 2011-07-27 トヨタ自動車株式会社 触媒劣化診断装置
JP4664882B2 (ja) * 2006-09-11 2011-04-06 トヨタ自動車株式会社 触媒劣化診断装置
JP4906525B2 (ja) * 2007-01-26 2012-03-28 ボッシュ株式会社 還元剤噴射弁の詰まり判定装置及び還元剤噴射弁の詰まり判定方法
DE102007045256A1 (de) * 2007-09-21 2009-04-02 Volkswagen Ag Verfahren zum Prüfen der Funktionsfähigkeit eines Oxidationskatalysators einer Brennkraftmaschine
JP4436397B2 (ja) * 2007-10-01 2010-03-24 本田技研工業株式会社 内燃機関の排ガス浄化装置
JP4867909B2 (ja) * 2007-12-19 2012-02-01 トヨタ自動車株式会社 ＮＯｘ触媒の劣化診断装置
JP2010185325A (ja) * 2009-02-11 2010-08-26 Denso Corp ＮＯｘ触媒の劣化診断装置
FR2965017B1 (fr) * 2010-09-20 2014-05-09 Renault Sa Desulfuration d'un piege a oxydes d'azote d'un vehicule automobile
EP3018314B1 (en) 2013-07-04 2020-08-19 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification system of internal combustion engine
JP6102962B2 (ja) * 2015-02-12 2017-03-29 マツダ株式会社 エンジンの制御装置
JP6296019B2 (ja) * 2015-08-05 2018-03-20 トヨタ自動車株式会社 内燃機関

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993007363A1 (fr) * 1991-10-03 1993-04-15 Toyota Jidosha Kabushiki Kaisha Dispositif pour purifier les gaz d'echappement d'un moteur a combustion interne
JP2990395B2 (ja) * 1991-10-18 1999-12-13 本田技研工業株式会社 触媒の劣化判定装置
JP2812023B2 (ja) * 1991-11-12 1998-10-15 トヨタ自動車株式会社 触媒劣化度検出装置
DE69326217T3 (de) * 1992-06-12 2009-11-12 Toyota Jidosha Kabushiki Kaisha, Toyota-shi Abgasemissionssteuerungssystem für verbrennungsmotoren
JP2845071B2 (ja) * 1992-12-29 1999-01-13 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE69420488T2 (de) * 1993-01-19 2000-04-13 Toyota Jidosha K.K., Toyota Abgasreinigungsgerät für eine brennkraftmaschine
JPH06272546A (ja) * 1993-03-17 1994-09-27 Toyota Motor Corp 内燃機関の排気浄化装置
JP3228006B2 (ja) * 1994-06-30 2001-11-12 トヨタ自動車株式会社 内燃機関の排気浄化要素劣化検出装置

Also Published As

Publication number Publication date
EP0735250A3 (en) 1997-07-30
JP2827954B2 (ja) 1998-11-25
DE69624744D1 (de) 2002-12-19
US5713199A (en) 1998-02-03
EP1146208B1 (en) 2004-08-18
EP1146208A2 (en) 2001-10-17
DE69633204D1 (de) 2004-09-23
JPH08260949A (ja) 1996-10-08
DE69633204T2 (de) 2005-09-15
EP1146208A3 (en) 2003-10-15
KR0165951B1 (ko) 1999-01-15
EP0735250A2 (en) 1996-10-02
EP0735250B1 (en) 2002-11-13
DE69624744T2 (de) 2003-04-24

Similar Documents

Publication Publication Date Title
KR960034673A (ko) 질소 산화물 흡수제의 열화 검출장치
KR960034674A (ko) 내연기관의 배기 정화 장치
KR960034076A (ko) 내연기관의 배기 정화 장치
US6347513B2 (en) Method for regenerating a NOx storage catalytic converter for an internal combustion engine
CA2322915A1 (en) Exhaust emission control system for internal combustion engine
EP1321653A3 (en) Air-fuel ratio control system for internal combustion engines
EP0636770A4 (en) EXHAUST GAS PURIFICATION DEVICE FOR AN INTERNAL COMBUSTION ENGINE.
SE8603227L (sv) Forfarande for bestemning av aldringstillstandet hos en avgaskatalysator vid en med lambda-sondreglering av brensle/luftforhallandet utrustad forbrenningsmotor
JP3835140B2 (ja) エンジンの空燃比制御装置
EP1184548A3 (en) Catalyst deterioration detection device for internal combustion engine
JP3218747B2 (ja) 触媒劣化度検出装置
US6564544B2 (en) Engine exhaust purification arrangement
JPH03242415A (ja) 内燃機関の排気浄化装置
KR910001229A (ko) 내연기관의 공연비 제어장치
KR910014697A (ko) 촉매의 정화율 검출장치
KR910001228A (ko) 내연기관의 공연비 제어 장치
US5609025A (en) Air-fuel ratio control device for internal combustion engine
KR100305781B1 (ko) 이중산소센서를이용한공연비제어장치및그방법
JP3454177B2 (ja) 内燃機関の排気浄化装置
JP3186394B2 (ja) 内燃機関の排気浄化装置
JP2004060613A (ja) 内燃機関の空燃比制御装置
JP2571214B2 (ja) 多種燃料内燃エンジンの空燃比制御方法
JP2003148235A (ja) エンジンの空燃比検出装置
KR100412721B1 (ko) 차량의 공연비 제어방법
KR940015200A (ko) 내연기관의 학습 제어장치 및 그 방법

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130903

Year of fee payment: 16

FPAY Annual fee payment

Payment date: 20140901

Year of fee payment: 17

FPAY Annual fee payment

Payment date: 20150819

Year of fee payment: 18

EXPY Expiration of term