JP2006257926A - 排気ガス浄化方法及び排気ガス浄化システム - Google Patents
排気ガス浄化方法及び排気ガス浄化システム Download PDFInfo
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- 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
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- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
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- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
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- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1614—NOx amount trapped in catalyst
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- 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
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- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
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- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
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Abstract
【解決手段】 NOx吸蔵還元型触媒11を備えた排気ガス浄化システム1の再生制御において、エンジン運転状態が排気ガス温度が所定のモード判定温度以下となる第1エンジン運転領域にあるか否かを判定し、ある場合には、EGRリッチ制御を行い、ない場合は、排気管内噴射リッチ制御を行い、EGRリッチ制御を行っている場合には、車両が加速中であるか否かを判定し、加速中であると判定した時には、車両が加速中であるとの判定が終了するまで再生制御を延期する。
【選択図】 図2
Description
1 排気ガス浄化システム
4 排気通路
5 EGR通路
6 EGR弁
10 排気ガス浄化装置
11 NOx吸蔵還元型触媒
13 HC供給弁
14 バイナリλセンサ
15 上流側温度センサ
16 下流側温度センサ
Claims (6)
- 排気ガスの空燃比が、リーン状態の場合にNOxを吸蔵し、かつ、リッチ状態の場合に吸蔵していたNOxを放出すると共に還元するNOx吸蔵還元型触媒を備え、該NOx吸蔵還元型触媒に吸蔵されたと推定されるNOx吸蔵推定量が所定の判定値に達したと判定した時に、該NOx吸蔵還元型触媒のNOx吸蔵能力を回復するための再生制御を行う排気ガス浄化システムの再生制御において、
エンジン運転状態が排気ガス温度が所定のモード判定温度以下となる第1エンジン運転領域にあるか否かを判定し、前記第1エンジン運転領域にある場合には、EGR量の制御によって排気ガス中の空燃比をリッチ状態にするEGRリッチ制御を行い、前記第1エンジン運転領域にない場合は、排気管内に直接燃料を噴射して排気ガス中の空燃比をリッチ状態にする排気管内噴射リッチ制御を行い、
EGRリッチ制御を行っている場合には、該排気ガス浄化システムを搭載した車両が加速中であるか否かを判定し、
加速中であると判定した時には、車両が加速中であるとの判定が終了するまで再生制御を延期することを特徴とする排気ガス浄化方法。 - 前記加速中であると判定した時において、前記NOx吸蔵還元型触媒によるNOxの浄化率が所定の浄化率以下で、且つ、排気ガス温度が排気管内噴射の下限温度閾値以上であれば、EGRリッチ制御と排気管内噴射リッチ制御を併用した併用リッチ制御を行うことを特徴とする請求項1記載の排気ガス浄化方法。
- 排気ガスの空燃比が、リーン状態の場合にNOxを吸蔵し、かつ、リッチ状態の場合に吸蔵していたNOxを放出すると共に還元するNOx吸蔵還元型触媒を備え、該NOx吸蔵還元型触媒に吸蔵されたと推定されるNOx吸蔵推定量が所定の判定値に達したと判定した時に、該NOx吸蔵還元型触媒のNOx吸蔵能力を回復するための再生制御を行う排気ガス浄化システムの再生制御において、
エンジン運転状態が排気ガス温度が所定のモード判定温度以下となる第1エンジン運転領域にあるか否かを判定し、前記第1エンジン運転領域にある場合には、EGR量の制御によって排気ガス中の空燃比をリッチ状態にするEGRリッチ制御を行い、前記第1エンジン運転領域にない場合は、排気管内に直接燃料を噴射して排気ガス中の空燃比をリッチ状態にする排気管内噴射リッチ制御を行い、
EGRリッチ制御を行っている場合には、該排気ガス浄化システムを搭載した車両が加速中であるか否かを判定し、
加速中であると判定した時には、排気ガス温度が排気管内噴射の下限温度閾値以上であれば、EGRリッチ制御と排気管内噴射リッチ制御を併用した併用リッチ制御を行い、排気ガス温度が排気管内噴射の下限温度閾値以上でなければ、再生制御を延期することを特徴とする排気ガス浄化方法。 - 排気ガスの空燃比が、リーン状態の場合にNOxを吸蔵し、かつ、リッチ状態の場合に吸蔵していたNOxを放出すると共に還元するNOx吸蔵還元型触媒と、該NOx吸蔵還元型触媒に吸蔵されたと推定されるNOx吸蔵推定量が所定の判定値に達したと判定した時に、該NOx吸蔵還元型触媒のNOx吸蔵能力を回復するための再生制御を行う再生制御装置を備えた排気ガス浄化システムにおいて、
前記再生制御装置が、
エンジン運転状態が排気ガス温度が所定のモード判定温度以下となる第1エンジン運転領域にあるか否かを判定し、前記第1エンジン運転領域にある場合には、EGR量の制御によって排気ガス中の空燃比をリッチ状態にするEGRリッチ制御を行い、前記第1エンジン運転領域にない場合は、排気管内に直接燃料を噴射して排気ガス中の空燃比をリッチ状態にする排気管内噴射リッチ制御を行い、
EGRリッチ制御を行っている場合には、該排気ガス浄化システムを搭載した車両が加速中であるか否かを判定し、
加速中であると判定した時には、車両が加速中であるとの判定が終了するまで再生制御を延期する制御を行うことを特徴とする排気ガス浄化システム。 - 前記再生制御装置が、
前記加速中であると判定した時において、前記NOx吸蔵還元型触媒によるNOxの浄化率が所定の浄化率以下で、且つ、排気ガス温度が排気管内噴射の下限温度閾値以上である時は、EGRリッチ制御と排気管内噴射リッチ制御を併用した併用リッチ制御を行う制御をすることを特徴とする請求項4記載の排気ガス浄化システム。 - 排気ガスの空燃比が、リーン状態の場合にNOxを吸蔵し、かつ、リッチ状態の場合に吸蔵していたNOxを放出すると共に還元するNOx吸蔵還元型触媒と、該NOx吸蔵還元型触媒に吸蔵されたと推定されるNOx吸蔵推定量が所定の判定値に達したと判定した時に、該NOx吸蔵還元型触媒のNOx吸蔵能力を回復するための再生制御を行う再生制御装置を備えた排気ガス浄化システムにおいて、
前記再生制御装置が、
エンジン運転状態が排気ガス温度が所定のモード判定温度以下となる第1エンジン運転領域にあるか否かを判定し、前記第1エンジン運転領域にある場合には、EGR量の制御によって排気ガス中の空燃比をリッチ状態にするEGRリッチ制御を行い、前記第1エンジン運転領域にない場合は、排気管内に直接燃料を噴射して排気ガス中の空燃比をリッチ状態にする排気管内噴射リッチ制御を行い、
EGRリッチ制御を行っている場合には、該排気ガス浄化システムを搭載した車両が加速中であるか否かを判定し、
加速中であると判定した時には、排気ガス温度が排気管内噴射の下限温度閾値以上であれば、EGRリッチ制御と排気管内噴射リッチ制御を併用した併用リッチ制御を行い、排気ガス温度が排気管内噴射の下限温度閾値以上でなければ、再生制御を延期する制御をすることを特徴とする排気ガス浄化システム。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2005074431A JP3821154B1 (ja) | 2005-03-16 | 2005-03-16 | 排気ガス浄化方法及び排気ガス浄化システム |
PCT/JP2006/302492 WO2006098104A1 (ja) | 2005-03-16 | 2006-02-14 | 排気ガス浄化方法及び排気ガス浄化システム |
EP06713633A EP1860292B1 (en) | 2005-03-16 | 2006-02-14 | Exhaust gas purification method and system |
US11/885,407 US7963103B2 (en) | 2005-03-16 | 2006-02-14 | Exhaust gas purification method and system |
CNB200680008353XA CN100552195C (zh) | 2005-03-16 | 2006-02-14 | 废气净化方法及废气净化系统 |
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JP2005074431A JP3821154B1 (ja) | 2005-03-16 | 2005-03-16 | 排気ガス浄化方法及び排気ガス浄化システム |
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JP3821154B1 JP3821154B1 (ja) | 2006-09-13 |
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US (1) | US7963103B2 (ja) |
EP (1) | EP1860292B1 (ja) |
JP (1) | JP3821154B1 (ja) |
CN (1) | CN100552195C (ja) |
WO (1) | WO2006098104A1 (ja) |
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JP2010084615A (ja) * | 2008-09-30 | 2010-04-15 | Mazda Motor Corp | エンジンシステムの制御方法及び制御装置 |
JP2010084614A (ja) * | 2008-09-30 | 2010-04-15 | Mazda Motor Corp | エンジンシステムの制御方法及び制御装置 |
JP2010169032A (ja) * | 2009-01-23 | 2010-08-05 | Fuji Heavy Ind Ltd | エンジンの制御装置 |
JP2010265771A (ja) * | 2009-05-12 | 2010-11-25 | Denso Corp | 内燃機関の排気浄化装置 |
JP2016050515A (ja) * | 2014-08-29 | 2016-04-11 | 三菱自動車工業株式会社 | 車両の制御装置 |
KR20170088992A (ko) * | 2014-12-02 | 2017-08-02 | 로베르트 보쉬 게엠베하 | 내연 기관의 연료 계량 시스템 작동 방법 및 장치 |
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JP4998326B2 (ja) * | 2008-02-27 | 2012-08-15 | いすゞ自動車株式会社 | 排気ガス浄化システムの制御方法及び排気ガス浄化システム |
JP5115328B2 (ja) * | 2008-05-20 | 2013-01-09 | トヨタ自動車株式会社 | 内燃機関 |
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- 2006-02-14 EP EP06713633A patent/EP1860292B1/en not_active Expired - Fee Related
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Cited By (7)
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JP2010084615A (ja) * | 2008-09-30 | 2010-04-15 | Mazda Motor Corp | エンジンシステムの制御方法及び制御装置 |
JP2010084614A (ja) * | 2008-09-30 | 2010-04-15 | Mazda Motor Corp | エンジンシステムの制御方法及び制御装置 |
JP2010169032A (ja) * | 2009-01-23 | 2010-08-05 | Fuji Heavy Ind Ltd | エンジンの制御装置 |
JP2010265771A (ja) * | 2009-05-12 | 2010-11-25 | Denso Corp | 内燃機関の排気浄化装置 |
JP2016050515A (ja) * | 2014-08-29 | 2016-04-11 | 三菱自動車工業株式会社 | 車両の制御装置 |
KR20170088992A (ko) * | 2014-12-02 | 2017-08-02 | 로베르트 보쉬 게엠베하 | 내연 기관의 연료 계량 시스템 작동 방법 및 장치 |
KR102313815B1 (ko) | 2014-12-02 | 2021-10-18 | 로베르트 보쉬 게엠베하 | 내연 기관의 연료 계량 시스템 작동 방법 및 장치 |
Also Published As
Publication number | Publication date |
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CN100552195C (zh) | 2009-10-21 |
CN101142381A (zh) | 2008-03-12 |
JP3821154B1 (ja) | 2006-09-13 |
US7963103B2 (en) | 2011-06-21 |
US20090235646A1 (en) | 2009-09-24 |
EP1860292B1 (en) | 2012-07-11 |
EP1860292A1 (en) | 2007-11-28 |
WO2006098104A1 (ja) | 2006-09-21 |
EP1860292A4 (en) | 2011-04-13 |
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