JP2010537117A - Scr排ガス後処理システムの運転および診断方法 - Google Patents
Scr排ガス後処理システムの運転および診断方法 Download PDFInfo
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- 238000002405 diagnostic procedure Methods 0.000 title description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 246
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 188
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 116
- 239000007789 gas Substances 0.000 claims abstract description 110
- 230000003197 catalytic effect Effects 0.000 claims abstract description 93
- 239000004202 carbamide Substances 0.000 claims abstract description 58
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000011049 filling Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- 238000013459 approach Methods 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 37
- 239000003054 catalyst Substances 0.000 claims description 35
- 230000000694 effects Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 abstract description 14
- 238000009825 accumulation Methods 0.000 abstract description 10
- 229910002089 NOx Inorganic materials 0.000 description 18
- 230000006866 deterioration Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 238000001514 detection method Methods 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 7
- 230000007257 malfunction Effects 0.000 description 7
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 150000003672 ureas Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009118 appropriate response Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000009283 thermal hydrolysis Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- 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
- 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
- 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
- F01N2560/021—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting ammonia NH3
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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
-
- 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
- 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
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1402—Exhaust gas composition
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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
- 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
- F01N2900/1622—Catalyst reducing agent absorption capacity or consumption amount
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/005—Electrical control of exhaust gas treating apparatus using models instead of sensors to determine operating characteristics of exhaust systems, e.g. calculating catalyst temperature instead of measuring it directly
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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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
【選択図】 図1
Description
Claims (8)
- アンモニア蓄積性能を有するSCR触媒コンバータ(5)を備える、内燃機関のSCR排ガス後処理システムの運転および診断方法であって、
SCR触媒コンバータ(5)の下流側に配置された、酸化窒素およびアンモニアを検知する排ガスセンサ(25)の信号が検出され、
通常の運転モードにおいて、SCR触媒コンバータ(5)のアンモニア充填レベル(F)が少なくとも所定の目標値に近づくように、または、所定の目標値範囲内に保持されるように、SCR触媒コンバータ(5)に対して、尿素添加システムを作動することによって、SCR触媒コンバータ(5)内に蓄積されているアンモニアの充填レベルに対応するアンモニアが供給され、
所定の第1の限界値(G1)を超過する排ガスセンサ(25)の信号(S)が生成される場合、通常の運転モードが中断されて、尿素添加装置によって調節される尿素添加率(D)が通常の運転モード中に設定されている値に対して所定の分だけ増加され、調節された尿素添加率(D)の増加後所定の期間内で、排ガスセンサ(25)の信号(S)が所定の第1の限界値(G1)を超過する第2の限界値を超える場合、診断運転モードに変更されることを特徴とする、方法。 - 請求項1に記載の方法において、
排ガスセンサ(25)の信号(S)が所定の期間中に、調節された尿素添加率(D)の増加後、第1の限界値(G1)よりも下にある第3の限界値(G3)を下回る場合、通常の運転モードに戻ることを特徴とする、方法。 - 請求項2に記載の方法において、
排ガスセンサ(25)の信号(S)が所定の期間内で第1の限界値(G1)に含まれる所定の値範囲内に留まる場合、異常機能している尿素添加装置が診断されることを特徴とする、方法。 - 請求項3に記載の方法において、
前記値範囲が、上方では第2の限界値(G2)によって、下方では第3の限界値(G3)によって画定されていることを特徴とする、方法。 - 請求項1〜4のいずれか1項に記載の方法において、
診断運転モードにおいて、現在の酸化窒素転化活性(UNOx)を特徴づける触媒特徴値が検出されることを特徴とする、方法。 - 請求項5に記載の方法において、
診断運転モード中に検出された触媒特徴値の所定の参照値からの逸脱が検出され、この逸脱が所定の逸脱値よりも大きい場合に、エラーメッセージが生成されることを特徴とする、方法。 - 請求項1〜6のいずれか1項に記載の方法において、
診断運転モードにおいて、暫定的に、通常の内燃機関運転に対して増加した酸化窒素粗排出(NOxroh)を有する内燃機関運転が停止され、尿素添加率(D)が時間同期して減少されるかまたはゼロになることを特徴とする、方法。 - 請求項7に記載の方法において、
排ガスセンサ(25)の信号(S)が酸化窒素粗排出(NOxroh)の増加後に所定の第4の限界値(G4)を超過する場合、増加した酸化窒素粗排出(NOxroh)を有する内燃機関運転が終了されて、通常運転モードの戻ることを特徴とする、方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007040439.7 | 2007-08-28 | ||
DE102007040439A DE102007040439A1 (de) | 2007-08-28 | 2007-08-28 | Betriebs- und Diagnoseverfahren für ein SCR-Abgasnachbehandlungssystem |
PCT/EP2008/006640 WO2009030346A1 (de) | 2007-08-28 | 2008-08-13 | Betriebs- und diagnoseverfahren für ein scr-abgasnachbehandlungssystem |
Publications (3)
Publication Number | Publication Date |
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JP2010537117A true JP2010537117A (ja) | 2010-12-02 |
JP2010537117A5 JP2010537117A5 (ja) | 2012-06-07 |
JP5124643B2 JP5124643B2 (ja) | 2013-01-23 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010522215A Active JP5124643B2 (ja) | 2007-08-28 | 2008-08-13 | Scr排ガス後処理システムの運転および診断方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8499545B2 (ja) |
EP (1) | EP2181258B1 (ja) |
JP (1) | JP5124643B2 (ja) |
CN (1) | CN101790623B (ja) |
DE (1) | DE102007040439A1 (ja) |
RU (1) | RU2439343C2 (ja) |
WO (1) | WO2009030346A1 (ja) |
Cited By (4)
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JP2014521010A (ja) * | 2011-07-19 | 2014-08-25 | ダイムラー・アクチェンゲゼルシャフト | 窒素酸化物の還元に用いるアンモニア含有還元剤溶液の品質確定のための方法 |
KR20150029014A (ko) * | 2012-07-04 | 2015-03-17 | 에미텍 게젤샤프트 퓌어 에미시온스테크놀로기 엠베하 | 환원제를 공급하기 위한 방법 |
WO2015046265A1 (ja) | 2013-09-25 | 2015-04-02 | トヨタ自動車株式会社 | 排気浄化装置の診断装置 |
KR101810621B1 (ko) | 2013-02-13 | 2017-12-20 | 스카니아 씨브이 악티에볼라그 | Scr 시스템에 관한 오류-추적을 위한 장치 및 방법 |
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JP5124643B2 (ja) | 2013-01-23 |
EP2181258A1 (de) | 2010-05-05 |
DE102007040439A1 (de) | 2009-03-05 |
RU2010111842A (ru) | 2011-10-10 |
EP2181258B1 (de) | 2014-07-30 |
US8499545B2 (en) | 2013-08-06 |
RU2439343C2 (ru) | 2012-01-10 |
WO2009030346A1 (de) | 2009-03-12 |
CN101790623B (zh) | 2012-01-18 |
CN101790623A (zh) | 2010-07-28 |
US20100326051A1 (en) | 2010-12-30 |
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