JP2004176719A - 排気ガス後処理システムを監視するための方法および装置 - Google Patents
排気ガス後処理システムを監視するための方法および装置 Download PDFInfo
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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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
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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
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
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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
- F01N3/103—Oxidation catalysts for HC and CO only
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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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- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/30—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel reformer
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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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/40—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a hydrolysis catalyst
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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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/02—Catalytic activity of catalytic converters
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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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/05—Systems for adding substances into 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
- 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
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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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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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
- F02D41/14—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
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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
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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
- Y02T10/40—Engine management systems
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
【解決手段】前記課題は、供給される還元剤の量を変更し、排気ガス系統に配置されたセンサの信号が所期のように変化しない場合、欠陥が存在すると判定することを特徴とする方法によって解決される。
【選択図】図2
Description
105,110 排気ガス管路
115 排気ガス後処理システム
115a 加水分解触媒
115b SCR触媒
115c 酸化触媒
170 制御ユニット
172 排気ガス後処理制御ユニット
175 機関制御ユニット
177 第2のセンサ(燃料調量システム180の状態を検出する)
180 燃料調量システム
191 第3のセンサ(窒素酸化物濃度を検出する)
192 第4のセンサ
193 第5のセンサ
194 第1のセンサ(内燃機関に供給される空気の状態を検出する)
N 還元剤または還元剤から生成される中間生成物を表す信号、または分解すべき有害物質を表す信号
TV 温度量
T 時間
N0 排気ガスセンサ193の瞬時値
R 還元剤量
D 所定の値
SW1、SW2 閾値
ND 瞬時値NAと還元剤の変化前に存在していた値N0との差の絶対値
Claims (10)
- 排気ガス後処理システムを監視するための方法であって、
排気ガス後処理のために、排気ガスに還元剤を供給する形式の方法において、
供給される還元剤の量を変更し、排気ガス系統に配置されたセンサの信号が所期のように変化しない場合、欠陥が存在すると判定することを特徴とする方法。 - 排気ガスには、還元剤として尿素水溶液を供給する、請求項1記載の方法。
- 該センサは、排気ガス中の有害物質の含有量および/または還元剤の含有量および/または還元剤の分解生成物の含有量を表す信号を供給する、請求項1または2記載の方法。
- 供給される還元剤の量を、特定の作動状態において変更する、請求項1から3までのいずれか1項記載の方法。
- 供給される還元剤の量を、静的な作動状態および/またはアイドリング状態において変更する、請求項1から4までのいずれか1項記載の方法。
- 還元剤量を増加しても、還元剤の含有量および/または還元剤の分解生成物の含有量を示す信号が上昇しない場合、および/または排気ガス中の有害物質の含有量を示す信号が低下しない場合、欠陥を識別する、請求項1から5までのいずれか1項記載の方法。
- 還元剤量を減少しても、還元剤の含有量および/または還元剤の分解生成物の含有量を示す信号が低下しない場合、および/または排気ガス中の有害物質の含有量を示す信号が上昇しない場合、欠陥を識別する、請求項1から6までのいずれか1項記載の方法。
- 還元剤量を増加しても、還元剤の含有量および/または還元剤の分解生成物の含有量を示す信号が所期の値だけ増加しない場合、および/または排気ガス中の有害物質の含有量を示す信号所期の値だけ低下しない場合、欠陥を識別する、請求項1から7までのいずれか1項記載の方法。
- 所定の値だけ還元剤量を減少しても、還元剤の含有量および/または還元剤の分解生成物の含有量を示す信号が所期の値だけ低下しない場合、および/または排気ガス中の有害物質の含有量を示す信号が所期の値だけ上昇しない場合、欠陥を識別する、請求項1から8までのいずれか1項記載の方法。
- 排気ガス後処理システムを監視するための装置であって、
排気ガス後処理のために、排気ガスに還元剤が供給される形式のものにおいて、
供給される還元剤の量を変更する手段が設けられており、
排気ガス系統に配置されたセンサの信号が相応に変化しない場合、欠陥が存在すると判定することを特徴とする装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10254843A DE10254843A1 (de) | 2002-11-25 | 2002-11-25 | Verfahren und Vorrichtung zur Überwachung eines Abgasnachbehandlungssystems |
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EP (1) | EP1426575B1 (ja) |
JP (1) | JP2004176719A (ja) |
DE (2) | DE10254843A1 (ja) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006090316A (ja) * | 2004-09-25 | 2006-04-06 | Robert Bosch Gmbh | 内燃機関の運転方法および装置 |
WO2006046339A1 (ja) * | 2004-10-29 | 2006-05-04 | Nissan Diesel Motor Co., Ltd. | 排気浄化装置 |
JP2008536054A (ja) * | 2005-04-14 | 2008-09-04 | ボルボ ラストバグナー アーベー | 排ガスの後処理装置の存在を診断する方法及び車搭載型診断技術の使用 |
JP2009510324A (ja) * | 2005-09-29 | 2009-03-12 | ボルボ ラストバグナー アーベー | 排気後処理システムの診断方法 |
WO2009071994A2 (en) * | 2007-12-06 | 2009-06-11 | Toyota Jidosha Kabushiki Kaisha | Abnormality detection system and abnormality detection method for internal combustion engine |
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 |
JP2010172855A (ja) * | 2009-01-30 | 2010-08-12 | Mitsubishi Heavy Ind Ltd | 排ガス浄化装置 |
JP2010537117A (ja) * | 2007-08-28 | 2010-12-02 | ダイムラー・アクチェンゲゼルシャフト | Scr排ガス後処理システムの運転および診断方法 |
US8132450B2 (en) | 2008-04-14 | 2012-03-13 | Toyota Jidosha Kabushiki Kaisha | Malfunction diagnosis device for exhaust gas purification system and malfunction diagnosis method therefor |
EP2664759A1 (en) | 2012-05-17 | 2013-11-20 | Toyota Jidosha Kabushiki Kaisha | Exhaust emission control apparatus and exhaust emission control method for internal combustion engine |
JP2013238206A (ja) * | 2012-05-17 | 2013-11-28 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
CN104502549A (zh) * | 2015-01-14 | 2015-04-08 | 成都海兰天澄科技有限公司 | 一种烟气在线自动监测*** |
CN105579677A (zh) * | 2013-09-25 | 2016-05-11 | 丰田自动车株式会社 | 排气净化装置的诊断装置 |
US10392993B1 (en) | 2018-04-24 | 2019-08-27 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas control apparatus for internal combustion engine |
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JP2006002663A (ja) * | 2004-06-17 | 2006-01-05 | Hino Motors Ltd | 排気浄化装置 |
JP4499160B2 (ja) * | 2004-12-14 | 2010-07-07 | ボルボ ラストバグナー アーベー | 酸化触媒を診断する方法、装置およびコンピュータプログラム製品 |
US7757478B2 (en) | 2005-10-07 | 2010-07-20 | Delphi Technologies, Inc. | System and method for monitoring operation of an exhaust gas treatment system |
DE102006026739B4 (de) * | 2006-06-08 | 2008-11-27 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102006033476A1 (de) * | 2006-07-19 | 2008-01-31 | Siemens Ag | Verfahren zur Überwachung eines Abgasnachbehandlungssystems |
DE102007006487B4 (de) * | 2006-09-27 | 2018-11-08 | Robert Bosch Gmbh | Verfahren zur Diagnose eines in einem Abgasbereich einer Brennkraftmaschine angeordneten Abgassensors und Vorrichtung zur Durchführung des Verfahrens |
FR2906312B1 (fr) | 2006-09-27 | 2016-04-15 | Bosch Gmbh Robert | Procede de diagnostic d'un capteur de gaz d'echappement equipant un moteur a combustion interne et dispositif pour sa mise en oeuvre. |
DE102007006489B4 (de) | 2007-02-09 | 2018-10-04 | Robert Bosch Gmbh | Verfahren zur Diagnose eines in einem Abgasbereich einer Brennkraftmaschine angeordneten Abgassensors und Vorrichtung zur Durchführung des Verfahrens |
DE102007022594A1 (de) * | 2007-05-14 | 2008-11-27 | Robert Bosch Gmbh | Diagnoseverfahren für ein in einen Abgasbereich einer Brennkraftmaschine einzubringendes Reagenzmittel und Vorrichtung zur Durchführung des Verfahrens |
DE102007037569B4 (de) | 2007-08-09 | 2020-01-16 | Daimler Ag | Verfahren zum Prüfen eines Abgasnachbehandlungssystems |
JP4877298B2 (ja) * | 2008-09-10 | 2012-02-15 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE102008042763B4 (de) * | 2008-10-13 | 2020-01-16 | Robert Bosch Gmbh | Verfahren zur Diagnose einer Reagenzmittel-Dosiervorrichtung und Vorrichtung zur Durchführung des Verfahrens |
CN101918686B (zh) * | 2009-03-31 | 2012-12-26 | 丰田自动车株式会社 | 催化剂劣化判定装置及催化剂劣化判定方法 |
DE102009055120B4 (de) | 2009-12-22 | 2023-11-16 | Robert Bosch Gmbh | Verfahren zum Überprüfen einer Funktion eines Aktuators bzw. eines Sensors, Verfahren zum Kalibrieren eines Aktuators bzw. eines Sensors sowie entsprechende Vorrichtung |
JP5000731B2 (ja) | 2010-02-06 | 2012-08-15 | 本田技研工業株式会社 | 内燃機関の排気浄化装置 |
CN108368767B (zh) * | 2016-01-25 | 2020-10-30 | 宝马股份公司 | 用于保证机动车中的排气特性的质量的方法 |
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JP3852788B2 (ja) * | 1995-10-02 | 2006-12-06 | 株式会社小松製作所 | ディーゼルエンジンのNOx 触媒の劣化検出装置およびその劣化検出方法 |
US6375828B2 (en) * | 1997-03-21 | 2002-04-23 | Ngk Spark Plug Co., Ltd. | Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor |
JP3607976B2 (ja) * | 1999-03-29 | 2005-01-05 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE19924029C2 (de) * | 1999-05-26 | 2001-05-23 | Porsche Ag | Verfahren zur Überwachung der Funktion eines Systems zur Abgasnachbehandlung |
JP3552653B2 (ja) * | 2000-07-24 | 2004-08-11 | トヨタ自動車株式会社 | 内燃機関の還元剤供給装置の診断処理装置 |
-
2002
- 2002-11-25 DE DE10254843A patent/DE10254843A1/de not_active Ceased
-
2003
- 2003-07-16 DE DE50302178T patent/DE50302178D1/de not_active Expired - Lifetime
- 2003-07-16 EP EP03102179A patent/EP1426575B1/de not_active Expired - Lifetime
- 2003-11-25 JP JP2003394509A patent/JP2004176719A/ja active Pending
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Also Published As
Publication number | Publication date |
---|---|
DE10254843A1 (de) | 2004-06-03 |
DE50302178D1 (de) | 2006-04-06 |
EP1426575A1 (de) | 2004-06-09 |
EP1426575B1 (de) | 2006-01-11 |
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