JP2004176722A - 触媒再生方法および触媒再生用の制御装置 - Google Patents
触媒再生方法および触媒再生用の制御装置 Download PDFInfo
- Publication number
- JP2004176722A JP2004176722A JP2003395789A JP2003395789A JP2004176722A JP 2004176722 A JP2004176722 A JP 2004176722A JP 2003395789 A JP2003395789 A JP 2003395789A JP 2003395789 A JP2003395789 A JP 2003395789A JP 2004176722 A JP2004176722 A JP 2004176722A
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- JP
- Japan
- Prior art keywords
- oxygen
- catalyst
- regeneration
- internal combustion
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 62
- 238000011069 regeneration method Methods 0.000 title claims abstract description 47
- 230000008929 regeneration Effects 0.000 title claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims abstract description 46
- 206010021143 Hypoxia Diseases 0.000 claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 59
- 239000001301 oxygen Substances 0.000 claims description 59
- 229910052760 oxygen Inorganic materials 0.000 claims description 59
- 238000003860 storage Methods 0.000 claims description 57
- 239000007789 gas Substances 0.000 claims description 45
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 33
- 230000002950 deficient Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 230000000116 mitigating effect Effects 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims 2
- 239000000446 fuel Substances 0.000 abstract description 19
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 26
- 239000000203 mixture Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- 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
- F01N3/0842—Nitrogen oxides
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
-
- 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
-
- 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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
【解決手段】内燃機関の駆動特性量から計算された吸蔵容積の充填率に依存して酸素欠乏状態を緩和する。
【選択図】図1
Description
msrg=msab*(1.0/λ−1.0)
ここでmsabは排気ガス流量であり、λは燃料空気混合気の組成比である
から得られる。
12 内燃機関
14 吸入弁
15 排出弁
16 吸気管
18 スロットルバルブ
20 制御装置
22 アクセルペダル
24 回転数センサ
26 エアマスフローセンサ
28 排気ガスセンサ
30 触媒
32 アクチュエータ
34 燃料噴射弁
36 点火装置
38 ピストン
40 クランク
Claims (10)
- 内燃機関(12)の排気ガス管路に配置されており、内燃機関の酸素過剰駆動時に酸素および窒素酸化物を排気ガス中から収容して吸蔵し、かつ酸素欠乏駆動時に酸素および窒素を排気ガス中へ放出する触媒(30)を再生するために、
触媒(30)の前方で第1の酸素欠乏状態を形成することにより再生をトリガし、再生の期間が経過するにつれて当該の酸素欠乏状態を緩和する
触媒再生方法において、
内燃機関(12)の駆動特性量から計算された触媒(30)の充填率に依存して酸素欠乏状態の緩和を行う
ことを特徴とする触媒再生方法。 - 再生の開始時には後の再生過程よりも大きな酸素欠乏状態を形成する、請求項1記載の方法。
- 酸素欠乏状態を酸素吸蔵容積の充填率に依存して緩和する、請求項2記載のシステム。
- 酸素欠乏状態を窒素酸化物吸蔵容積の充填率に依存して緩和する、請求項2または3記載のシステム。
- 内燃機関(12)の駆動特性量から充填率を計算する際に排気ガス流量を考慮する、請求項1から4までのいずれか1項記載の方法。
- 内燃機関(12)の駆動特性量から充填率を計算する際に排気ガス温度および/または触媒温度を考慮する、請求項1から5までのいずれか1項記載の方法。
- 充填率を計算する際に酸素充填率および窒素酸化物充填率の双方を形成する、請求項1から6までのいずれか1項記載の方法。
- 再生開始時の大きな酸素欠乏状態を触媒吸蔵容積の充填率が予め定められた閾値を下回るまで維持する、請求項2から7までのいずれか1項記載の方法。
- 内燃機関(12)の排気ガス管路に配置されており、内燃機関の酸素過剰駆動時に酸素および窒素酸化物を排気ガス中から収容して吸蔵し、酸素欠乏駆動時に酸素および窒素を排気ガス中へ放出する触媒(30)を再生するために、
触媒(30)の前方で第1の酸素欠乏状態を形成することにより再生をトリガし、再生の期間が経過するにつれて当該の酸素欠乏状態を緩和する、
触媒再生用の制御装置(20)において、
内燃機関(12)の駆動特性量から計算された触媒(30)の充填率に依存して酸素欠乏状態の緩和を行う
ことを特徴とする触媒再生用の制御装置。 - 請求項2から8までのいずれか1項記載の触媒再生方法を実行する制御手段(20)を備えている、請求項9記載の制御装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10255308A DE10255308B4 (de) | 2002-11-27 | 2002-11-27 | Verfahren und Steuereinrichtung zur Regeneration eines katalytischen Volumens im Abgas eines Verbrennungsmotors |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004176722A true JP2004176722A (ja) | 2004-06-24 |
JP4608203B2 JP4608203B2 (ja) | 2011-01-12 |
Family
ID=32308746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003395789A Expired - Lifetime JP4608203B2 (ja) | 2002-11-27 | 2003-11-26 | 触媒再生方法および触媒再生用の制御装置 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP4608203B2 (ja) |
DE (1) | DE10255308B4 (ja) |
FR (1) | FR2847939B1 (ja) |
IT (1) | ITMI20032293A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11242786B2 (en) | 2018-09-25 | 2022-02-08 | Denso Corporation | Control device for exhaust purging system |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2424197B (en) * | 2005-03-15 | 2009-01-14 | Ford Global Tech Llc | A method for adaptively controlling the regeneration of a lean nox trap |
JP4972914B2 (ja) | 2005-11-21 | 2012-07-11 | いすゞ自動車株式会社 | 排気ガス浄化システムの再生制御方法及び排気ガス浄化システム |
DE102007020062B4 (de) * | 2007-04-27 | 2014-06-26 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102008040646A1 (de) | 2008-07-23 | 2010-01-28 | Robert Bosch Gmbh | Abgasnachbehandlungseinrichtung für eine Brennkraftmaschine mit Fremdzündung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0666185A (ja) * | 1992-08-11 | 1994-03-08 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JPH08296472A (ja) * | 1995-04-25 | 1996-11-12 | Nissan Motor Co Ltd | エンジンの空燃比制御装置 |
JPH1162666A (ja) * | 1997-08-21 | 1999-03-05 | Nissan Motor Co Ltd | 内燃機関の排気浄化装置 |
JP2001003734A (ja) * | 1999-05-19 | 2001-01-09 | Ford Global Technol Inc | NOxトラップ再生サイクルの最適化方法 |
JP2001214735A (ja) * | 2000-02-01 | 2001-08-10 | Nissan Motor Co Ltd | 内燃機関の排気浄化装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5433074A (en) * | 1992-07-30 | 1995-07-18 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification device for an engine |
DE19844082C1 (de) * | 1998-09-25 | 1999-10-14 | Siemens Ag | Verfahren zum Regenerieren eines NOx-Speicherkatalysators |
-
2002
- 2002-11-27 DE DE10255308A patent/DE10255308B4/de not_active Expired - Lifetime
-
2003
- 2003-11-25 IT IT002293A patent/ITMI20032293A1/it unknown
- 2003-11-26 JP JP2003395789A patent/JP4608203B2/ja not_active Expired - Lifetime
- 2003-11-26 FR FR0313861A patent/FR2847939B1/fr not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0666185A (ja) * | 1992-08-11 | 1994-03-08 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JPH08296472A (ja) * | 1995-04-25 | 1996-11-12 | Nissan Motor Co Ltd | エンジンの空燃比制御装置 |
JPH1162666A (ja) * | 1997-08-21 | 1999-03-05 | Nissan Motor Co Ltd | 内燃機関の排気浄化装置 |
JP2001003734A (ja) * | 1999-05-19 | 2001-01-09 | Ford Global Technol Inc | NOxトラップ再生サイクルの最適化方法 |
JP2001214735A (ja) * | 2000-02-01 | 2001-08-10 | Nissan Motor Co Ltd | 内燃機関の排気浄化装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11242786B2 (en) | 2018-09-25 | 2022-02-08 | Denso Corporation | Control device for exhaust purging system |
Also Published As
Publication number | Publication date |
---|---|
DE10255308B4 (de) | 2013-01-10 |
ITMI20032293A1 (it) | 2004-05-28 |
FR2847939B1 (fr) | 2006-03-24 |
FR2847939A1 (fr) | 2004-06-04 |
JP4608203B2 (ja) | 2011-01-12 |
DE10255308A1 (de) | 2004-06-09 |
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