JP2006037770A - 排気浄化装置の異常検知方法 - Google Patents
排気浄化装置の異常検知方法 Download PDFInfo
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- JP2006037770A JP2006037770A JP2004215766A JP2004215766A JP2006037770A JP 2006037770 A JP2006037770 A JP 2006037770A JP 2004215766 A JP2004215766 A JP 2004215766A JP 2004215766 A JP2004215766 A JP 2004215766A JP 2006037770 A JP2006037770 A JP 2006037770A
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- 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
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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
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
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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
- B01D53/9495—Controlling the catalytic process
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- 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
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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- 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
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- 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
- F01N3/18—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 characterised by methods of operation; Control
- F01N3/20—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 characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
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- 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
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
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- 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
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- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
【解決手段】排気管9途中の選択還元型触媒10に還元剤(尿素水17)を添加してNOxを還元浄化するようにした排気浄化装置の異常検知方法に関し、運転期間中の触媒温度を監視して各温度帯ごとの積算時間を記録しておき、その各温度帯での積算時間に基づきNOx低減性能の劣化係数を各温度帯ごとに決定し、該各温度帯ごとに予め決められている基準NOx低減率に前記劣化係数を温度帯別に乗算して前記基準NOx低減率を更新し、この更新した基準NOx低減率を次回の運転時に使用して実測のNOx低減率とその測定温度帯の基準NOx低減率とを比較し、基準NOx低減率に対する実測のNOx低減率の偏差が所要範囲内に収まらない時に異常判定を下す。
【選択図】図1
Description
9 排気管
10 選択還元型触媒
17 尿素水(還元剤)
18 尿素水添加手段
19 回転センサ
19a 回転数信号
20 アクセルセンサ
20a 負荷信号
21 制御装置
22 NOxセンサ
22a 検出信号
23 NOxセンサ
23a 検出信号
24 温度センサ
24a 検出信号
25 温度センサ
25a 検出信号
Claims (5)
- 排気管途中の選択還元型触媒に還元剤を添加してNOxを還元浄化するようにした排気浄化装置の異常検知方法であって、運転期間中の触媒温度を監視して各温度帯ごとの積算時間を記録しておき、その各温度帯での積算時間に基づきNOx低減性能の劣化係数を各温度帯ごとに決定し、該各温度帯ごとに予め決められている基準NOx低減率に前記劣化係数を温度帯別に乗算して前記基準NOx低減率を更新し、この更新した基準NOx低減率を次回の運転時に使用して実測のNOx低減率とその測定温度帯の基準NOx低減率とを比較し、基準NOx低減率に対する実測のNOx低減率の偏差が所要範囲内に収まらない時に異常判定を下すことを特徴とする排気浄化装置の異常検知方法。
- 選択還元型触媒の入口と出口に配置したNOxセンサによりNOx低減率を計測し、このNOx低減率に前記各NOxセンサの使用時間に応じた経時劣化係数を乗算して実測のNOx低減率を補正することを特徴とする請求項1に記載の排気浄化装置の異常検知方法。
- エンジンの運転状態から導き出したHCとCOの発生量に基づき被毒係数を決定し、この被毒係数を基準NOx低減率に更に乗算して補正することを特徴とする請求項1又は2に記載の排気浄化装置の異常検知方法。
- 基準NOx低減率に対する実測のNOx低減率の偏差が所要範囲を下回っている時に選択還元型触媒の異常劣化を判定し且つ上回っている時にはセンサ類の異常を判定することを特徴とする請求項1、2又は3に記載の排気浄化装置の異常検知方法。
- 基準NOx低減率が所定値を下回った時に選択還元型触媒の交換時期が近いことを判定することを特徴とする請求項1、2、3又は4に記載の排気浄化装置の異常検知方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004215766A JP4267534B2 (ja) | 2004-07-23 | 2004-07-23 | 排気浄化装置の異常検知方法 |
KR1020077000772A KR20070033426A (ko) | 2004-07-23 | 2005-07-21 | 배기 정화 장치의 이상 검지 방법 |
DE602005008627T DE602005008627D1 (de) | 2004-07-23 | 2005-07-21 | Verfahren zur erfassung einer in einer abgasreinigungsvorrichtung aufgetretenen anomalität |
EP05766444A EP1801375B1 (en) | 2004-07-23 | 2005-07-21 | Method for detecting abnormality occurred in exhaust gas clarification device |
PCT/JP2005/013364 WO2006009195A1 (ja) | 2004-07-23 | 2005-07-21 | 排気浄化装置の異常検知方法 |
US11/632,997 US7788902B2 (en) | 2004-07-23 | 2005-07-21 | Method for detecting abnormality in exhaust emission control device |
CNA2005800247639A CN1989319A (zh) | 2004-07-23 | 2005-07-21 | 排气净化装置的异常检测方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004215766A JP4267534B2 (ja) | 2004-07-23 | 2004-07-23 | 排気浄化装置の異常検知方法 |
Publications (2)
Publication Number | Publication Date |
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JP2006037770A true JP2006037770A (ja) | 2006-02-09 |
JP4267534B2 JP4267534B2 (ja) | 2009-05-27 |
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Application Number | Title | Priority Date | Filing Date |
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JP2004215766A Expired - Fee Related JP4267534B2 (ja) | 2004-07-23 | 2004-07-23 | 排気浄化装置の異常検知方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7788902B2 (ja) |
EP (1) | EP1801375B1 (ja) |
JP (1) | JP4267534B2 (ja) |
KR (1) | KR20070033426A (ja) |
CN (1) | CN1989319A (ja) |
DE (1) | DE602005008627D1 (ja) |
WO (1) | WO2006009195A1 (ja) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2008133122A1 (ja) | 2007-04-25 | 2008-11-06 | Toyota Jidosha Kabushiki Kaisha | 内燃機関の排気浄化装置 |
WO2009098798A1 (ja) * | 2008-02-08 | 2009-08-13 | Bosch Corporation | Noxセンサの合理性診断装置及び合理性診断方法、並びに内燃機関の排気浄化装置 |
JP2009215926A (ja) * | 2008-03-07 | 2009-09-24 | Mitsubishi Heavy Ind Ltd | ディーゼルエンジン監視システム、及び監視方法 |
JP2010163923A (ja) * | 2009-01-14 | 2010-07-29 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
WO2010125726A1 (ja) | 2009-04-30 | 2010-11-04 | 日野自動車株式会社 | 還元剤の異常検出方法 |
JP2010248925A (ja) * | 2009-04-10 | 2010-11-04 | Mazda Motor Corp | エンジン排気浄化装置 |
JP2010270614A (ja) * | 2009-05-19 | 2010-12-02 | Toyota Motor Corp | 排気浄化装置の故障検出装置 |
JP2012107536A (ja) * | 2010-11-15 | 2012-06-07 | Mitsubishi Heavy Ind Ltd | NOx浄化装置の制御方法及び装置 |
US8307699B2 (en) | 2008-05-21 | 2012-11-13 | Toyota Jidosha Kabushiki Kaisha | Abnormality diagnosis apparatus and abnormality diagnosis method for NOx sensor |
JP2013514490A (ja) * | 2009-12-18 | 2013-04-25 | ボルボ ラストバグナー アーベー | 排気ガス後処理デバイス内の還元剤バッファ・レベルをコントロールするための方法 |
JP2014194165A (ja) * | 2013-03-28 | 2014-10-09 | Yanmar Co Ltd | 排気ガス浄化システム、及びこれを備えたエンジン |
WO2014203776A1 (ja) * | 2013-06-17 | 2014-12-24 | 日野自動車 株式会社 | 尿素水供給系の診断装置 |
JP2015010589A (ja) * | 2013-07-02 | 2015-01-19 | トヨタ自動車株式会社 | 排気浄化装置の異常診断装置 |
JP2015519518A (ja) * | 2012-06-13 | 2015-07-09 | マック トラックス インコーポレイテッド | 排気後処理システムの部品を監視する方法、排気後処理システム、及び排気後処理システムの制御装置 |
JP2015135117A (ja) * | 2015-03-06 | 2015-07-27 | ボルボ ラストバグナー アーベー | 排気ガス後処理デバイス内の還元剤貯蔵・レベルをコントロールするための方法 |
WO2016108518A1 (ko) * | 2014-12-31 | 2016-07-07 | 두산엔진주식회사 | 선택적 촉매 환원 시스템 및 이의 성능 진단 방법 |
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KR100820395B1 (ko) * | 2007-01-24 | 2008-04-08 | 현대자동차주식회사 | 배기가스의 질소산화물 저감방법 및 장치 |
JP4412399B2 (ja) * | 2007-12-06 | 2010-02-10 | トヨタ自動車株式会社 | 内燃機関の異常検出装置 |
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JP4530081B2 (ja) * | 2008-07-25 | 2010-08-25 | トヨタ自動車株式会社 | 内燃機関の触媒劣化診断装置及び触媒劣化診断方法 |
WO2010082354A1 (ja) * | 2009-01-19 | 2010-07-22 | トヨタ自動車株式会社 | 排気浄化装置の異常検出装置及び排気浄化装置の異常検出方法 |
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JP4737312B2 (ja) * | 2009-03-10 | 2011-07-27 | 株式会社デンソー | 排気浄化システムの異常診断装置及び排気浄化システム |
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JP6037035B2 (ja) * | 2013-09-25 | 2016-11-30 | トヨタ自動車株式会社 | 排気浄化装置の診断装置 |
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US10620174B2 (en) | 2018-01-23 | 2020-04-14 | Cummins Inc. | Method for improving accuracy of sensor outputs for measuring NOx, and system and apparatus for same |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP3781401B2 (ja) * | 1999-01-26 | 2006-05-31 | 日野自動車株式会社 | 排ガス浄化触媒用還元剤 |
JP3986208B2 (ja) | 1999-06-14 | 2007-10-03 | 日野自動車株式会社 | 排ガス浄化装置 |
JP2002161732A (ja) | 2000-11-30 | 2002-06-07 | Hino Motors Ltd | 排気浄化装置 |
JP3649130B2 (ja) | 2001-01-22 | 2005-05-18 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2002256951A (ja) | 2001-02-27 | 2002-09-11 | Mazda Motor Corp | エンジンの排気浄化装置 |
JP4854122B2 (ja) | 2001-03-16 | 2012-01-18 | 東京瓦斯株式会社 | 還元剤添加量制御方法 |
US7093427B2 (en) | 2002-11-21 | 2006-08-22 | Ford Global Technologies, Llc | Exhaust gas aftertreatment systems |
-
2004
- 2004-07-23 JP JP2004215766A patent/JP4267534B2/ja not_active Expired - Fee Related
-
2005
- 2005-07-21 CN CNA2005800247639A patent/CN1989319A/zh active Pending
- 2005-07-21 WO PCT/JP2005/013364 patent/WO2006009195A1/ja active IP Right Grant
- 2005-07-21 EP EP05766444A patent/EP1801375B1/en not_active Expired - Fee Related
- 2005-07-21 KR KR1020077000772A patent/KR20070033426A/ko not_active Application Discontinuation
- 2005-07-21 US US11/632,997 patent/US7788902B2/en not_active Expired - Fee Related
- 2005-07-21 DE DE602005008627T patent/DE602005008627D1/de active Active
Cited By (25)
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US8132402B2 (en) | 2007-04-25 | 2012-03-13 | Toyota Jidosha Kabushiki Kaisha | Exhaust purification device of internal combustion engine |
JP2008274765A (ja) * | 2007-04-25 | 2008-11-13 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
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US7788902B2 (en) | 2010-09-07 |
EP1801375B1 (en) | 2008-07-30 |
EP1801375A1 (en) | 2007-06-27 |
WO2006009195A1 (ja) | 2006-01-26 |
DE602005008627D1 (de) | 2008-09-11 |
CN1989319A (zh) | 2007-06-27 |
JP4267534B2 (ja) | 2009-05-27 |
KR20070033426A (ko) | 2007-03-26 |
US20080092522A1 (en) | 2008-04-24 |
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