JP4371114B2 - 内燃機関の排気浄化装置 - Google Patents
内燃機関の排気浄化装置 Download PDFInfo
- Publication number
- JP4371114B2 JP4371114B2 JP2006052540A JP2006052540A JP4371114B2 JP 4371114 B2 JP4371114 B2 JP 4371114B2 JP 2006052540 A JP2006052540 A JP 2006052540A JP 2006052540 A JP2006052540 A JP 2006052540A JP 4371114 B2 JP4371114 B2 JP 4371114B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst device
- fuel ratio
- way catalyst
- hydrogen concentration
- exhaust gas
- 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.)
- Expired - Fee Related
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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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- 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
-
- 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
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
-
- 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
- F01N2550/02—Catalytic activity of catalytic converters
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
-
- 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
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D2041/147—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being a hydrogen content or concentration of the exhaust gases
-
- 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
- Y02T10/12—Improving ICE efficiencies
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
CH2+H2O→CO+2H2 (1)
CO+H2O→CO2+H2 (2)
SO2+3H2→H2S+2H2O (3)
それにより、ステップ105において算出された下流側水素濃度C2と上流側水素濃度C1との差Cが、現在の排気ガス中に含まれる炭化水素及び一酸化炭素の量と、現在の三元触媒装置1の温度と、現在の三元触媒装置1の劣化程度とを考慮して推定された水蒸気改質反応及び水性ガスシフト反応により生成された水素量に基づく水素濃度C’とほぼ等しいか否かがステップ106において判断され、この判断が肯定される時には、硫化水素の生成によって水素が消費されておらず、すなわち、三元触媒装置1からはSOXが放出されていないこととなる。
2 上流側水素濃度センサ
3 下流側水素濃度センサ
Claims (5)
- 機関排気系の触媒装置の上流側に上流側水素濃度センサを配置し、前記上流側水素濃度センサにより検出される排気ガス中の水素濃度に基づき理論空燃比よりリッチの時の燃焼空燃比を推定し、機関排気系の触媒装置の上流側に酸素濃度センサを配置し、前記酸素濃度センサにより検出される排気ガス中の酸素濃度に基づき理論空燃比よりリーンの時の燃焼空燃比を推定することを特徴する内燃機関の排気浄化装置。
- 前記触媒装置は三元触媒装置であり、前記三元触媒装置の下流側には下流側水素濃度センサが配置され、前記三元触媒装置の測定温度又は推定温度が設定温度未満である時に、前記下流側水素濃度センサにより検出される下流側水素濃度と前記上流側水素濃度センサにより検出される上流側水素濃度との差に基づき、前記三元触媒装置の劣化程度を推定することを特徴とする請求項1に記載の内燃機関の排気浄化装置。
- 前記触媒装置は三元触媒装置であり、前記三元触媒装置の下流側には下流側水素濃度センサが配置され、前記三元触媒装置の測定温度又は推定温度が設定温度以上であり、前記三元触媒装置へ流入する排気ガスの空燃比が理論空燃比又はリッチ空燃比である時に、前記下流側水素濃度センサにより検出される下流側水素濃度と前記上流側水素濃度センサにより検出される上流側水素濃度との差に基づき、前記三元触媒装置が硫黄被毒しているか否かを判断する請求項1に記載の内燃機関の排気浄化装置。
- 前記三元触媒装置が硫黄被毒していると判断されている時には前記三元触媒装置の測定温度又は推定温度が設定温度未満とならないようにし、前記三元触媒装置へ流入する排気ガスの空燃比を理論空燃比又はリッチ空燃比とすることを特徴とする請求項3に記載の内燃機関の排気浄化装置。
- 前記三元触媒装置が硫黄被毒していると判断されている場合に、前記三元触媒装置の測定温度又は推定温度が設定温度以上のまま車両停止してアイドル状態となった時には、前記三元触媒装置へ流入する排気ガスの空燃比を理論空燃比よりリーンとすることを特徴とする請求項3に記載の内燃機関の排気浄化装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006052540A JP4371114B2 (ja) | 2006-02-28 | 2006-02-28 | 内燃機関の排気浄化装置 |
US12/280,564 US8161729B2 (en) | 2006-02-28 | 2007-02-26 | Exhaust purification system for internal combustion engine and control method of the exhaust purification system |
DE602007008369T DE602007008369D1 (de) | 2006-02-28 | 2007-02-26 | Abgasreinigungssystem für einen verbrennungsmotor |
EP07733905A EP1989415B1 (en) | 2006-02-28 | 2007-02-26 | Exhaust purification system for internal combustion engine |
CN2007800015062A CN101360895B (zh) | 2006-02-28 | 2007-02-26 | 用于内燃发动机的排气净化系统 |
PCT/IB2007/000457 WO2007099429A1 (en) | 2006-02-28 | 2007-02-26 | Exhaust purification system for internal combustion engine and control method of the exhaust purification system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006052540A JP4371114B2 (ja) | 2006-02-28 | 2006-02-28 | 内燃機関の排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007231779A JP2007231779A (ja) | 2007-09-13 |
JP4371114B2 true JP4371114B2 (ja) | 2009-11-25 |
Family
ID=38226379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006052540A Expired - Fee Related JP4371114B2 (ja) | 2006-02-28 | 2006-02-28 | 内燃機関の排気浄化装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8161729B2 (ja) |
EP (1) | EP1989415B1 (ja) |
JP (1) | JP4371114B2 (ja) |
CN (1) | CN101360895B (ja) |
DE (1) | DE602007008369D1 (ja) |
WO (1) | WO2007099429A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8744729B2 (en) | 2007-07-24 | 2014-06-03 | Toyota Jidosha Kabushiki Kaisha | Apparatus and method for detecting abnormal air-fuel ratio variation among cylinders of multi-cylinder internal combustion engine |
JP5018550B2 (ja) * | 2008-02-27 | 2012-09-05 | トヨタ自動車株式会社 | 燃料改質装置 |
WO2010064302A1 (ja) * | 2008-12-02 | 2010-06-10 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
EP2615279B1 (en) * | 2010-11-17 | 2020-05-06 | Toyota Jidosha Kabushiki Kaisha | Control device for internal combustion engine |
JP5660945B2 (ja) * | 2011-03-18 | 2015-01-28 | ダイハツ工業株式会社 | 内燃機関の触媒劣化判定装置 |
JP6408556B2 (ja) * | 2013-03-14 | 2018-10-17 | バイオ ディージー インコーポレイテッド | 向上した分解速度を有する生分解性合金を含む埋め込み型医療デバイス |
US20150033709A1 (en) * | 2013-07-31 | 2015-02-05 | General Electric Company | Sulfur sensor for engine exhaust |
JP6144652B2 (ja) * | 2014-07-23 | 2017-06-07 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE102014016447B4 (de) * | 2014-11-06 | 2023-05-11 | Andreas Döring | Verfahren und Steuerungseinrichtung zum Betreiben einer Brennkraftmaschine |
JP6507824B2 (ja) * | 2015-04-27 | 2019-05-08 | 三菱自動車工業株式会社 | エンジンの制御装置 |
JP6597677B2 (ja) * | 2017-03-10 | 2019-10-30 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
CN111520242B (zh) * | 2020-04-24 | 2022-11-11 | 深圳市元征科技股份有限公司 | 一种空燃比调整方法及装置 |
CN112267929B (zh) * | 2020-10-16 | 2022-01-21 | 潍柴动力股份有限公司 | 节省三元催化器贵金属用量的方法、尾气处理系统及车辆 |
JP2024010982A (ja) * | 2022-07-13 | 2024-01-25 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4141326A (en) * | 1977-03-11 | 1979-02-27 | The Bendix Corporation | Closed loop control system for hydrogen fuelled engine |
JPH0827247B2 (ja) | 1987-11-04 | 1996-03-21 | 株式会社豊田中央研究所 | 広帯域空燃比センサおよび検出装置 |
DE4128997A1 (de) * | 1991-08-31 | 1993-03-04 | Abb Patent Gmbh | Verfahren und vorrichtung zur regelung und pruefung |
JPH06307271A (ja) | 1993-04-23 | 1994-11-01 | Mazda Motor Corp | エンジンの空燃比制御装置 |
JP3799824B2 (ja) * | 1998-06-26 | 2006-07-19 | 日産自動車株式会社 | 内燃機関の排気浄化装置 |
JP3446815B2 (ja) | 1998-12-01 | 2003-09-16 | 三菱自動車工業株式会社 | 内燃機関の排気浄化装置 |
DE10017940C2 (de) * | 2000-04-11 | 2003-01-23 | Omg Ag & Co Kg | Verfahren zur Überprüfung der Funktionstüchtigkeit eines Stickoxid-Speicherkatalysators |
JP2003027924A (ja) | 2001-07-17 | 2003-01-29 | Nissan Motor Co Ltd | 内燃機関の排気浄化装置 |
DE10147491A1 (de) * | 2001-09-26 | 2003-04-24 | Bosch Gmbh Robert | Verfahren zur Regelung des Kraftstoff/Luftverhältnisses für einen Verbrennungsmotor |
JP4349205B2 (ja) | 2003-11-18 | 2009-10-21 | トヨタ自動車株式会社 | 空燃比制御装置 |
JP2005220901A (ja) * | 2004-01-06 | 2005-08-18 | Toyota Motor Corp | 内燃機関の触媒劣化状態評価装置 |
JP4321306B2 (ja) * | 2004-02-26 | 2009-08-26 | マツダ株式会社 | 水素エンジンの制御装置 |
JP2005240712A (ja) | 2004-02-27 | 2005-09-08 | Mitsubishi Heavy Ind Ltd | ガスエンジン |
JP4367234B2 (ja) * | 2004-05-27 | 2009-11-18 | トヨタ自動車株式会社 | 内燃機関 |
JP4192905B2 (ja) * | 2005-03-04 | 2008-12-10 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US20060248876A1 (en) * | 2005-05-04 | 2006-11-09 | Taxon Morse N | Selective catalytic reduction exhaust after-treatment |
JP4462107B2 (ja) | 2005-05-19 | 2010-05-12 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP4711233B2 (ja) * | 2006-05-10 | 2011-06-29 | スズキ株式会社 | 水素エンジンの排気ガス浄化システム |
-
2006
- 2006-02-28 JP JP2006052540A patent/JP4371114B2/ja not_active Expired - Fee Related
-
2007
- 2007-02-26 CN CN2007800015062A patent/CN101360895B/zh not_active Expired - Fee Related
- 2007-02-26 WO PCT/IB2007/000457 patent/WO2007099429A1/en active Application Filing
- 2007-02-26 DE DE602007008369T patent/DE602007008369D1/de active Active
- 2007-02-26 US US12/280,564 patent/US8161729B2/en not_active Expired - Fee Related
- 2007-02-26 EP EP07733905A patent/EP1989415B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20090019832A1 (en) | 2009-01-22 |
EP1989415B1 (en) | 2010-08-11 |
CN101360895B (zh) | 2010-11-17 |
US8161729B2 (en) | 2012-04-24 |
CN101360895A (zh) | 2009-02-04 |
DE602007008369D1 (de) | 2010-09-23 |
WO2007099429A1 (en) | 2007-09-07 |
JP2007231779A (ja) | 2007-09-13 |
EP1989415A1 (en) | 2008-11-12 |
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