JP2014118966A - 車両のlnt制御方法 - Google Patents
車両のlnt制御方法 Download PDFInfo
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- JP2014118966A JP2014118966A JP2013085572A JP2013085572A JP2014118966A JP 2014118966 A JP2014118966 A JP 2014118966A JP 2013085572 A JP2013085572 A JP 2013085572A JP 2013085572 A JP2013085572 A JP 2013085572A JP 2014118966 A JP2014118966 A JP 2014118966A
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- 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
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/025—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by changing the composition of the exhaust gas, e.g. for exothermic reaction on exhaust gas treating apparatus
-
- 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
- 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
- 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
- F02D2200/0802—Temperature of the exhaust gas treatment 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
- F02D41/1454—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 an oxygen content or concentration or the air-fuel ratio
-
- 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
- F02D41/146—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 an NOx content or concentration
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
【解決手段】LNTの温度に応じて、基準温度未満ではフリーリッチ段階S30とリッチモード分離段階S40を実行してLNTの担体温度を上昇させた状態でリッチ進行段階S50を実行して、NOxのスリップ量を低減させ、十分な還元作用がなされることができるようにしてLNTの浄化効率を上昇させることができるようにする。
【選択図】図2
Description
NOx吸着量によってLNTのNOx再生が必要であるかを判断する再生必要判断段階と;
LNTのNOx再生が必要な場合、LNTの温度が所定の基準温度未満であるかを判断するLNT温度判断段階と;
上記LNT温度が上記基準温度以上の場合、リッチモードを実行するリッチ進行段階と;
上記LNT温度が上記基準温度未満の場合、上記リッチ進行段階に先立ってリッチ状態で燃料を噴射するフリーリッチ段階;
をさらに含んで構成されたことを特徴とする。
S20;LNT温度判断段階
S30;フリーリッチ段階
S40;リッチモード分離段階
S50;リッチ進行段階
S60;リッチモード終了段階
Claims (6)
- NOx吸着量によってLNTのNOx再生が必要であるかを判断する再生必要判断段階と;
LNTのNOx再生が必要な場合、LNTの温度が所定の基準温度未満であるかを判断するLNT温度判断段階と;
上記LNT温度が上記基準温度以上の場合、リッチモードを実行するリッチ進行段階と;
上記LNT温度が上記基準温度未満の場合、上記リッチ進行段階に先立ってリッチ状態で燃料を噴射するフリーリッチ段階;
をさらに含んで構成されたことを特徴とする車両のLNT制御方法。 - 上記フリーリッチ段階以後、上記リッチ進行段階以前には、稀薄な燃焼状態であるリーン状態で所定時間維持するリッチモード分離段階が含まれること
を特徴とする請求項1に記載の車両のLNT制御方法。 - 上記フリーリッチ段階は、上記リッチ進行段階に比べて短い時間持続するように設定され;
リッチモード分離段階は、上記フリーリッチ段階によって上昇する温度がLNTの担体温度に反映されるまで必要な時間持続するように設定されること
を特徴とする請求項2に記載の車両のLNT制御方法。 - 上記リッチ進行段階以後、リッチモードを終了する条件が充足されたかを判断してリッチモードを終了するリッチモード終了段階;
をさらに含んで構成されたことを特徴とする請求項1に記載の車両のLNT制御方法。 - 上記リッチモード終了段階では、上記リッチ進行段階の遂行によってLNTに吸着されていたNOx吸着量が0になるか、LNTの前端と後端のラムダセンサ値が同じになれば、リッチモードを終了する条件が充足されたものと判断すること
を特徴とする請求項4に記載の車両のLNT制御方法。 - 上記LNT温度を判断する基準温度は、LNTの温度に伴うNOx転換率が最大になる温度に設定されること
を特徴とする請求項1に記載の車両のLNT制御方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR20120148621 | 2012-12-18 | ||
KR10-2012-0148621 | 2012-12-18 |
Publications (2)
Publication Number | Publication Date |
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JP2014118966A true JP2014118966A (ja) | 2014-06-30 |
JP6243620B2 JP6243620B2 (ja) | 2017-12-06 |
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JP2013085572A Expired - Fee Related JP6243620B2 (ja) | 2012-12-18 | 2013-04-16 | 車両のlnt制御方法 |
Country Status (4)
Country | Link |
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US (1) | US8784758B2 (ja) |
EP (1) | EP2746557A1 (ja) |
JP (1) | JP6243620B2 (ja) |
CN (1) | CN103867272B (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2541656B (en) | 2015-08-24 | 2019-07-31 | Ford Global Tech Llc | A method of operating an engine |
GB2551149B (en) * | 2016-06-07 | 2019-11-20 | Jaguar Land Rover Ltd | Reactivation control apparatus and method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10121944A (ja) * | 1996-10-16 | 1998-05-12 | Ford Global Technol Inc | NOxトラップの状態を診断する方法 |
JP2001020781A (ja) * | 1999-07-02 | 2001-01-23 | Mitsubishi Motors Corp | 内燃機関の排気浄化装置 |
JP2004150296A (ja) * | 2002-10-29 | 2004-05-27 | Mitsubishi Motors Corp | 内燃機関の排気浄化装置 |
JP2005030246A (ja) * | 2003-07-09 | 2005-02-03 | Mitsubishi Motors Corp | 排気ガス浄化装置 |
JP2005291058A (ja) * | 2004-03-31 | 2005-10-20 | Mitsubishi Fuso Truck & Bus Corp | 排気ガス浄化装置 |
JP2014025451A (ja) * | 2012-07-30 | 2014-02-06 | Mitsubishi Motors Corp | 排気浄化装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6244046B1 (en) | 1998-07-17 | 2001-06-12 | Denso Corporation | Engine exhaust purification system and method having NOx occluding and reducing catalyst |
US6742328B2 (en) * | 2001-10-11 | 2004-06-01 | Southwest Research Institute | Systems and methods for controlling diesel engine emissions |
DE10158568A1 (de) | 2001-11-29 | 2003-06-26 | Bosch Gmbh Robert | Verfahren und Anlage zur Regenerierung insbesondere Desulfatisierung eines Speicherkatalysators bei der Abgasreinigung |
JP4254505B2 (ja) | 2003-11-27 | 2009-04-15 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US20050223698A1 (en) * | 2004-03-31 | 2005-10-13 | Mitsubishi Fuso Truck And Bus Corporation | Exhaust gas cleaning device |
US7565799B2 (en) * | 2005-02-09 | 2009-07-28 | Gm Global Technology Operations, Inc. | Controlling lean NOx trap (LNT) catalyst performance |
US20070289291A1 (en) * | 2006-06-14 | 2007-12-20 | Alexander Rabinovich | Apparatus and Method for NOx Reduction |
DE102007044937B4 (de) | 2007-09-20 | 2010-03-25 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102008059698A1 (de) | 2008-11-29 | 2010-06-02 | Daimler Ag | Verfahren zum Betreiben eines Dieselmotors mit einer einen Stickoxid-Speicherkatalysator aufweisenden Abgasreinigungsanlage |
KR101500349B1 (ko) * | 2009-12-04 | 2015-03-10 | 현대자동차 주식회사 | Lnt촉매의 열화 감지장치 및 방법 |
KR20120038797A (ko) | 2010-10-14 | 2012-04-24 | 현대자동차주식회사 | 듀얼 클러치 변속기의 제어장치 및 방법 |
GB2486416A (en) * | 2010-12-13 | 2012-06-20 | Gm Global Tech Operations Inc | Method for controlling the regeneration process of a lean NOx trap |
-
2013
- 2013-04-16 US US13/863,930 patent/US8784758B2/en not_active Expired - Fee Related
- 2013-04-16 JP JP2013085572A patent/JP6243620B2/ja not_active Expired - Fee Related
- 2013-04-17 EP EP13164056.7A patent/EP2746557A1/en not_active Withdrawn
- 2013-05-30 CN CN201310209878.1A patent/CN103867272B/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10121944A (ja) * | 1996-10-16 | 1998-05-12 | Ford Global Technol Inc | NOxトラップの状態を診断する方法 |
JP2001020781A (ja) * | 1999-07-02 | 2001-01-23 | Mitsubishi Motors Corp | 内燃機関の排気浄化装置 |
JP2004150296A (ja) * | 2002-10-29 | 2004-05-27 | Mitsubishi Motors Corp | 内燃機関の排気浄化装置 |
JP2005030246A (ja) * | 2003-07-09 | 2005-02-03 | Mitsubishi Motors Corp | 排気ガス浄化装置 |
JP2005291058A (ja) * | 2004-03-31 | 2005-10-20 | Mitsubishi Fuso Truck & Bus Corp | 排気ガス浄化装置 |
JP2014025451A (ja) * | 2012-07-30 | 2014-02-06 | Mitsubishi Motors Corp | 排気浄化装置 |
Also Published As
Publication number | Publication date |
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US20140170042A1 (en) | 2014-06-19 |
JP6243620B2 (ja) | 2017-12-06 |
CN103867272A (zh) | 2014-06-18 |
CN103867272B (zh) | 2018-01-26 |
EP2746557A1 (en) | 2014-06-25 |
US8784758B2 (en) | 2014-07-22 |
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