KR960034674A - 내연기관의 배기 정화 장치 - Google Patents

내연기관의 배기 정화 장치 Download PDF

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Publication number
KR960034674A
KR960034674A KR1019960007340A KR19960007340A KR960034674A KR 960034674 A KR960034674 A KR 960034674A KR 1019960007340 A KR1019960007340 A KR 1019960007340A KR 19960007340 A KR19960007340 A KR 19960007340A KR 960034674 A KR960034674 A KR 960034674A
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South Korea
Prior art keywords
absorbent
fuel ratio
amount
air
absorption
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KR1019960007340A
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English (en)
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KR0165953B1 (ko
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다카미츠 아사누마
데츠로 기하라
겐지 가토
사토시 이구치
신이치 다케시마
도시아키 다나카
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와다 아키히로
도요타 지도샤 가부시키가이샤
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    • 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
    • B01D53/9481—Catalyst preceded by an adsorption device without catalytic function for temporary storage of contaminants, e.g. during cold start
    • 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
    • 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
    • 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
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • 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
    • F02D41/1439—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
    • 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
    • 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
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D41/1402—Adaptive control
    • 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

Abstract

본 발명의 목적은 NOx흡수제의 실제의 NOx량을 검출하며, 그것에 근거하여 NOx흡수제에서의 NOx방출제어를 실행하는 것으로, 기관 배기 통로내에 NOx흡수제(18)를 배치한다. NOx흡수제의(18) 하류의 기관 배기통로내에 공연비에 비례한 전류가 발생하는 O2센서(22)를 배치하여, 상기 O2센서(22)의 츨력 신호에 근거하여 NOx방출시에 NOx흡수제의(18)에 실제로 흡수되어 있는 NOx량을 산출한다. 상기 산출된 NOx량에 근거하여 추정 NOx량이 실제의 NOx흡수량을 나타내도록 보정되며, 상기 보정된 추정 NOx량이 설정값에 도달한 때에 NOx흡수제의(18)에서의 NOx의 방출 작용이 실행된다.

Description

내연기관의 배기 정화장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 내연기관의 전체도, 제12도는 공연비를 제어하기 위한 흐름도, 제13도는 공연비를 제어하기 위한 흐름도, 제14도는 피드백 제어 1을 실행하기 위한 흐름도.

Claims (2)

  1. 유입되는 배기 가스의 공연비가 린(희박)일 때에 NOx를 흡수하며, 유입되는 배기 가스의 공연비가 리치(농후)로 되면 흡수한 NOx를 방출하는 NOx흡수제를 기관 배기 통로내에 구비하며, NOx흡수제에 흡수되어 있는 NOx량을 추정하는NOx흡수량 추정 수단을 구비하며, NOX흡수제에 흡수되어 있다고 추정되는 추정 NOX흡수량이 사전에 결정된 설정값을 넘은 때에 NOx흡수제에 유입되는 배기 가스의 공연비를 린에서 리치로 변환하여 NOx흡수제에서 NOx를 방출시키도록 한 내연기관의 배기 정화 장치에 있어서, NOx하류의 배기 통로내에 배치된 공연비 검출수단과, NOx흡수제에서 NOx를 방출하는 NOx흡수제에 유입되는 배기 가스의 공연비가 리치로 된 때에 상기 공연비 검출 수단의 검출 결과에 근거하여 NOx흡수제에 흡수되어 있던 모든 NOx량을 산출하는 NOx흡수량 산출 수단과, 상기 NOx흡수량 산출 수단에 의해 산출된 NOx량에 근거하여 추정 NOx흡수량이 실제의 NOx흡수량을 나타내도록 추정 NOx흡수량을 보정하는 보정 수단을 구비하며, 상기 보정 수단에 의해 보정된 추정 NOx흡수량이 사전에 결정된 설정값을 넘은 때에 NOx흡수제에 유입되는 배기 가스의 공연비를 린에서 리치로 변환하여 NOx흡수제에서 NOx를 방출시키도록 이루어진 것을 특징으로하는 내연기관의 배기 정화장치.
  2. 제1항에 있어서, 상기 NOx흡수량 산출 수단에 의해 산출된 NOx량에 근거하여 NOx흡수제의 열화 상태를 판단하는 열화 판단 수단을 구비한 것을 특징으로 하는 내연기관의 배기 정화장치.
    참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960007340A 1995-03-24 1996-03-19 내연기관의 배기 정화 장치 KR0165953B1 (ko)

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Application Number Priority Date Filing Date Title
JP95-65947 1995-03-24
JP7065947A JP2836522B2 (ja) 1995-03-24 1995-03-24 内燃機関の排気浄化装置

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KR960034674A true KR960034674A (ko) 1996-10-24
KR0165953B1 KR0165953B1 (ko) 1999-01-15

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US (1) US5715679A (ko)
EP (1) EP0733787B1 (ko)
JP (1) JP2836522B2 (ko)
KR (1) KR0165953B1 (ko)
DE (1) DE69611944T2 (ko)

Families Citing this family (98)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626405B4 (de) * 1995-06-30 2008-09-18 Denso Corp., Kariya Luft/Kraftstoff-Verhältnis-Steuervorrichtung für einen Verbrennungsmotor
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
US5832722A (en) * 1997-03-31 1998-11-10 Ford Global Technologies, Inc. Method and apparatus for maintaining catalyst efficiency of a NOx trap
WO1998055742A1 (de) * 1997-06-03 1998-12-10 Siemens Aktiengesellschaft VERFAHREN ZUR REGENERATION EINES NOx-SPEICHERKATALYSATORS
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
DE19739848A1 (de) * 1997-09-11 1999-03-18 Bosch Gmbh Robert Brennkraftmaschine insbesondere für ein Kraftfahrzeug
US6148612A (en) 1997-10-13 2000-11-21 Denso Corporation Engine exhaust gas control system having NOx catalyst
US6309536B1 (en) 1997-10-14 2001-10-30 Ngk Spark Plug Co., Ltd. Method and apparatus for detecting a functional condition on an NOx occlusion catalyst
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
JP3446582B2 (ja) * 1998-01-14 2003-09-16 日産自動車株式会社 エンジンの排気浄化装置
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
JP3684854B2 (ja) * 1998-07-02 2005-08-17 日産自動車株式会社 内燃機関の触媒劣化診断装置
US6336320B1 (en) * 1998-07-10 2002-01-08 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
US6289672B1 (en) * 1998-07-21 2001-09-18 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for an internal combustion engine
DE19844082C1 (de) * 1998-09-25 1999-10-14 Siemens Ag Verfahren zum Regenerieren eines NOx-Speicherkatalysators
FR2785331B1 (fr) * 1998-10-28 2000-12-22 Renault Procede de commande de la purge en oxydes d'azote d'un pot catalytique de traitement des gaz d'echappement d'un moteur a combustion interne
WO2000028201A1 (de) * 1998-11-09 2000-05-18 Siemens Aktiengesellschaft VERFAHREN ZUM ADAPTIEREN DER NOx-ROHKONZENTRATION EINER MIT LUFTÜBERSCHUSS ARBEITENDEN BRENNKRAFTMASCHINE
US6718756B1 (en) * 1999-01-21 2004-04-13 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Exhaust gas purifier for use in internal combustion engine
DE19910503C1 (de) * 1999-03-10 2000-07-06 Daimler Chrysler Ag Verfahren und Vorrichtung zur periodischen Desulfatisierung eines Stickoxid- oder Schwefeloxid-Speichers mit Fett/Mager-Motorzylinderaufteilung
JP3649034B2 (ja) * 1999-03-25 2005-05-18 日産自動車株式会社 エンジンの排気浄化装置
JP3613083B2 (ja) * 1999-08-09 2005-01-26 株式会社日立製作所 排気浄化制御装置
DE19954549C2 (de) * 1999-11-12 2001-12-20 Daimler Chrysler Ag Verfahren zum Betrieb einer Abgasreinigungsanlage mit Stickoxidadsorber und Beladungssensor
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
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
US6434930B1 (en) 2000-03-17 2002-08-20 Ford Global Technologies, Inc. Method and apparatus for controlling lean operation of an internal combustion engine
US6487850B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method for improved engine control
US6810659B1 (en) 2000-03-17 2004-11-02 Ford Global Technologies, Llc Method for determining emission control system operability
US6539704B1 (en) 2000-03-17 2003-04-01 Ford Global Technologies, Inc. Method for improved vehicle performance
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
US6438944B1 (en) 2000-03-17 2002-08-27 Ford Global Technologies, Inc. Method and apparatus for optimizing purge fuel for purging emissions control device
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
US6629453B1 (en) 2000-03-17 2003-10-07 Ford Global Technologies, Llc Method and apparatus for measuring the performance of an emissions control device
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
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
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
US6327847B1 (en) 2000-03-17 2001-12-11 Ford Global Technologies, Inc. Method for improved performance of a vehicle
US6308697B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method for improved air-fuel ratio control in engines
US6481199B1 (en) 2000-03-17 2002-11-19 Ford Global Technologies, Inc. Control for improved vehicle performance
US6860100B1 (en) * 2000-03-17 2005-03-01 Ford Global Technologies, Llc Degradation detection method for an engine having a NOx sensor
US6360529B1 (en) 2000-03-17 2002-03-26 Ford Global Technologies, Inc. Method and apparatus for enabling lean engine operation upon engine start-up
US6427437B1 (en) 2000-03-17 2002-08-06 Ford Global Technologies, Inc. Method for improved performance of an engine emission control system
US6370868B1 (en) 2000-04-04 2002-04-16 Ford Global Technologies, Inc. Method and system for purge cycle management of a lean NOx trap
JP2001355485A (ja) * 2000-06-16 2001-12-26 Isuzu Motors Ltd 窒素酸化物吸蔵還元型触媒を備えた排気ガス浄化装置
JP4517463B2 (ja) 2000-06-22 2010-08-04 マツダ株式会社 エンジンの排気浄化装置
US6389803B1 (en) 2000-08-02 2002-05-21 Ford Global Technologies, Inc. Emission control for improved vehicle performance
US6691507B1 (en) 2000-10-16 2004-02-17 Ford Global Technologies, Llc Closed-loop temperature control for an emission control device
DE10054005A1 (de) 2000-11-01 2002-05-08 Daimler Chrysler Ag Verfahren zum Betrieb einer Abgasreinigungsanlage mit Stickoxidspeicher
DE10056035A1 (de) * 2000-11-11 2002-05-16 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung eines Abgasnachbehandlungssystems
DE10056017A1 (de) * 2000-11-11 2002-05-16 Bosch Gmbh Robert Verfahren und Vorrichtung eines Abgasnachbehandlungssystems
US6698188B2 (en) * 2000-12-08 2004-03-02 Toyota Jidosha Kabushiki Kaisha Emission control apparatus of internal combustion 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
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
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
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
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
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
US6467259B1 (en) 2001-06-19 2002-10-22 Ford Global Technologies, Inc. Method and system for operating dual-exhaust engine
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
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
US6453666B1 (en) 2001-06-19 2002-09-24 Ford Global Technologies, Inc. Method and system for reducing vehicle tailpipe emissions when operating lean
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
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
US6694244B2 (en) 2001-06-19 2004-02-17 Ford Global Technologies, Llc Method for quantifying oxygen stored in a vehicle emission control device
US6629409B2 (en) 2001-06-20 2003-10-07 Ford Global Technologies, Llc System and method for determining set point location for oxidant-based engine air/fuel control strategy
US6993899B2 (en) 2001-06-20 2006-02-07 Ford Global Technologies, Llc System and method for controlling catalyst storage capacity
US6497093B1 (en) 2001-06-20 2002-12-24 Ford Global Technologies, Inc. System and method for adjusting air-fuel ratio
US6453662B1 (en) * 2001-06-20 2002-09-24 Ford Global Technologies, Inc. System and method for estimating oxidant storage of a catalyst
US6453661B1 (en) 2001-06-20 2002-09-24 Ford Global Technologies, Inc. System and method for determining target oxygen storage in an automotive catalyst
EP1270911B1 (en) * 2001-06-28 2005-12-28 Isuzu Motors Limited Exhaust gas purifying facility with nitrogen oxides absorption-reduction catalyst
JP3828425B2 (ja) * 2002-01-08 2006-10-04 三菱電機株式会社 内燃機関の排気ガス浄化方法
US7032572B2 (en) * 2002-06-04 2006-04-25 Ford Global Technologies, Llc Method for controlling an engine to obtain rapid catalyst heating
US6925982B2 (en) 2002-06-04 2005-08-09 Ford Global Technologies, Llc Overall scheduling of a lean burn engine system
US6715462B2 (en) 2002-06-04 2004-04-06 Ford Global Technologies, Llc Method to control fuel vapor purging
US6735938B2 (en) 2002-06-04 2004-05-18 Ford Global Technologies, Llc Method to control transitions between modes of operation of an engine
US6769398B2 (en) 2002-06-04 2004-08-03 Ford Global Technologies, Llc Idle speed control for lean burn engine with variable-displacement-like characteristic
US6725830B2 (en) 2002-06-04 2004-04-27 Ford Global Technologies, Llc Method for split ignition timing for idle speed control 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
US7168239B2 (en) * 2002-06-04 2007-01-30 Ford Global Technologies, Llc Method and system for rapid heating of an emission control device
US6568177B1 (en) 2002-06-04 2003-05-27 Ford Global Technologies, Llc Method for rapid catalyst heating
US6745747B2 (en) 2002-06-04 2004-06-08 Ford Global Technologies, Llc Method for air-fuel ratio control of a lean burn engine
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
US6736121B2 (en) 2002-06-04 2004-05-18 Ford Global Technologies, Llc Method for air-fuel ratio sensor diagnosis
US6736120B2 (en) * 2002-06-04 2004-05-18 Ford Global Technologies, Llc Method and system of adaptive learning for engine exhaust gas sensors
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
JP3855920B2 (ja) * 2002-11-29 2006-12-13 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE10349876A1 (de) 2003-10-25 2005-05-25 Daimlerchrysler Ag Brennkraftmaschine mit Abgasreinigungsanlage und Verfahren zur Reinigung des Abgases einer Brennkraftmaschine
DE102004007523B4 (de) * 2004-02-17 2007-10-25 Umicore Ag & Co. Kg Verfahren zur Bestimmung des Umschaltzeitpunktes von der Speicherphase zur Regenerationsphase eines Stickoxid-Speicherkatalysators und zur Diagnose seines Speicherverhaltens
WO2005119607A2 (en) * 2004-06-03 2005-12-15 Tyfone, Inc. System and method for securing financial transactions
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
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
JP6455237B2 (ja) * 2015-03-04 2019-01-23 いすゞ自動車株式会社 排気浄化システム
JP6435369B2 (ja) * 2017-04-26 2018-12-05 株式会社キャタラー 排ガス浄化システム及び自動推進車両
US20200291877A1 (en) * 2019-03-12 2020-09-17 GM Global Technology Operations LLC Aggressive thermal heating target strategy based on nox estimated feedback

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
WO1993025806A1 (en) * 1992-06-12 1993-12-23 Toyota Jidosha Kabushiki Kaisha Exhaust emission control system for internal combustion engine
DE69420488T2 (de) * 1993-01-19 2000-04-13 Toyota Motor Co Ltd 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
JP2743760B2 (ja) * 1993-03-18 1998-04-22 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP2743764B2 (ja) * 1993-03-24 1998-04-22 トヨタ自動車株式会社 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

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DE69611944D1 (de) 2001-04-12
KR0165953B1 (ko) 1999-01-15
JPH08260948A (ja) 1996-10-08
EP0733787A3 (en) 1997-05-28
US5715679A (en) 1998-02-10
DE69611944T2 (de) 2001-08-02

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