JP5668737B2 - 内燃機関の排気浄化装置 - Google Patents
内燃機関の排気浄化装置 Download PDFInfo
- Publication number
- JP5668737B2 JP5668737B2 JP2012212436A JP2012212436A JP5668737B2 JP 5668737 B2 JP5668737 B2 JP 5668737B2 JP 2012212436 A JP2012212436 A JP 2012212436A JP 2012212436 A JP2012212436 A JP 2012212436A JP 5668737 B2 JP5668737 B2 JP 5668737B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- temperature
- activation temperature
- amount
- internal combustion
- 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.)
- Active
Links
- 238000000746 purification Methods 0.000 title claims description 24
- 238000002485 combustion reaction Methods 0.000 title claims description 11
- 239000003054 catalyst Substances 0.000 claims description 152
- 230000004913 activation Effects 0.000 claims description 48
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 110
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 96
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 53
- 230000003647 oxidation Effects 0.000 description 47
- 238000007254 oxidation reaction Methods 0.000 description 47
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 9
- 239000004202 carbamide Substances 0.000 description 9
- 230000006870 function Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration 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
- 239000000446 fuel Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010457 zeolite Substances 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
- F01N3/10—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
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation 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
- F01N3/10—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]
-
- 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
-
- 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
- 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
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1616—NH3-slip from catalyst
-
- 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
Landscapes
- 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)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
4 SCR触媒(NOx触媒、第1触媒)
5 酸化触媒(第2触媒)
6 添加弁(供給手段)
Claims (4)
- 内燃機関の排気通路に備えられて、NOxを浄化する機能を有する第1触媒(4)と、
その第1触媒よりも排気通路の上流に備えられて、NOx浄化のための還元剤を前記第1触媒に供給する供給手段(6)と、
前記第1触媒よりも排気通路の下流に配置されて、前記還元剤を浄化する機能を有する第2触媒(5)と、
前記供給手段によって供給される還元剤の前記第1触媒における貯蔵量の目標値を、その目標値と前記第1触媒における最大貯蔵可能量との差である余裕分が、前記第1触媒の温度が前記第2触媒の活性化温度より低い領域では相対的に大きく、前記活性化温度より高い領域では相対的に小さくなるように設定する設定手段(7、S50、S60)と、
を備え、
前記設定手段(7、S50、S60)は、前記第2触媒の活性化温度より高い温度領域から前記活性化温度より低い温度領域にかけて、不連続に前記余裕分を大きく設定することを特徴とする内燃機関の排気浄化装置。 - 前記設定手段(7、S50、S60)は、前記第2触媒の活性化温度より低い温度領域において、触媒温度が低いほど前記余裕分を大きく設定する請求項1に記載の内燃機関の排気浄化装置。
- 前記設定手段(7、S50、S60)は、前記第2触媒の活性化温度より低い温度領域において、前記目標値を、前記活性化温度における最大貯蔵可能量よりも低く設定する請求項1又は2に記載の内燃機関の排気浄化装置。
- 前記設定手段(7、S50、S60)において用いられる前記第2触媒の活性化温度の情報は、前記第1触媒と第2触媒との温度差を前記第2触媒の活性化温度に加算した数値である請求項1ないし3のいずれか1項に記載の内燃機関の排気浄化装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012212436A JP5668737B2 (ja) | 2012-09-26 | 2012-09-26 | 内燃機関の排気浄化装置 |
DE102013110318.9A DE102013110318B4 (de) | 2012-09-26 | 2013-09-19 | Abgasreinigungsvorrichtung für eine Verbrennungsmaschine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012212436A JP5668737B2 (ja) | 2012-09-26 | 2012-09-26 | 内燃機関の排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014066200A JP2014066200A (ja) | 2014-04-17 |
JP5668737B2 true JP5668737B2 (ja) | 2015-02-12 |
Family
ID=50235491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012212436A Active JP5668737B2 (ja) | 2012-09-26 | 2012-09-26 | 内燃機関の排気浄化装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP5668737B2 (ja) |
DE (1) | DE102013110318B4 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105604653B (zh) * | 2016-03-18 | 2018-08-21 | 安徽华菱汽车有限公司 | 一种尿素喷射控制方法、装置及scr*** |
CN112362194B (zh) * | 2020-11-02 | 2022-10-25 | 潍柴动力股份有限公司 | 一种传感器检测方法及装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04305643A (ja) | 1991-04-03 | 1992-10-28 | Toshiba Corp | X線診断装置 |
JP4305643B2 (ja) | 2003-10-24 | 2009-07-29 | 三菱ふそうトラック・バス株式会社 | 内燃機関の排気浄化装置 |
JP4215808B2 (ja) * | 2007-05-11 | 2009-01-28 | ボッシュ株式会社 | 排気浄化装置の制御装置及び制御方法並びに内燃機関の排気浄化装置 |
JP2009264181A (ja) * | 2008-04-23 | 2009-11-12 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP5127052B2 (ja) * | 2008-06-09 | 2013-01-23 | 日野自動車株式会社 | 排気処理装置の制御装置 |
US8096110B2 (en) * | 2008-11-19 | 2012-01-17 | GM Global Technology Operations LLC | Ammonia (NH3) storage control system and method at low nitrogen oxide (NOx) mass flow rates |
JP2010249076A (ja) * | 2009-04-17 | 2010-11-04 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
US8240194B2 (en) | 2009-07-30 | 2012-08-14 | Ford Global Technologies, Llc | Methods and systems for diagnostics of an emission system with more than one SCR region |
JP5553631B2 (ja) * | 2010-02-09 | 2014-07-16 | 本田技研工業株式会社 | 内燃機関の排気浄化装置 |
JP5627367B2 (ja) * | 2010-09-22 | 2014-11-19 | トヨタ自動車株式会社 | 排気浄化装置及び排気浄化装置の制御方法 |
JP2013151861A (ja) * | 2011-12-27 | 2013-08-08 | Honda Motor Co Ltd | 内燃機関の排気浄化システム |
-
2012
- 2012-09-26 JP JP2012212436A patent/JP5668737B2/ja active Active
-
2013
- 2013-09-19 DE DE102013110318.9A patent/DE102013110318B4/de active Active
Also Published As
Publication number | Publication date |
---|---|
DE102013110318B4 (de) | 2022-05-12 |
DE102013110318A1 (de) | 2014-03-27 |
JP2014066200A (ja) | 2014-04-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6508229B2 (ja) | 内燃機関の排気浄化装置の異常診断装置 | |
JP4438828B2 (ja) | 内燃機関の排気浄化装置 | |
EP2918805B1 (en) | Exhaust gas purification device for internal-combustion engine | |
JP5163754B2 (ja) | 内燃機関の排気浄化装置 | |
JP5348539B2 (ja) | 内燃機関の排気浄化装置 | |
JP4305643B2 (ja) | 内燃機関の排気浄化装置 | |
US20130312392A1 (en) | Systems and methods to mitigate nox and hc emissions at low exhaust temperatures | |
JP2008157136A (ja) | 内燃機関の排気浄化装置 | |
JP2019035370A (ja) | 排気浄化装置およびこれを備えた車両 | |
JP2017194022A (ja) | 排気浄化装置の制御装置 | |
JP2010031731A (ja) | 内燃機関の排気浄化装置 | |
JP2012031826A (ja) | 排気浄化装置の異常検出システム | |
JP5915516B2 (ja) | 内燃機関の排気浄化装置 | |
JP5560089B2 (ja) | 内燃機関の排気浄化装置 | |
JP2009156159A (ja) | 排気ガス浄化システムの異常部位の判定装置 | |
JP5668737B2 (ja) | 内燃機関の排気浄化装置 | |
JP5672328B2 (ja) | 内燃機関の排気浄化装置 | |
JP5761255B2 (ja) | 内燃機関の排気浄化装置 | |
JP6512535B2 (ja) | 内燃機関の排気浄化装置 | |
JP2015086848A (ja) | 内燃機関の排気浄化システム | |
JP6202600B2 (ja) | 制御装置、内燃機関の排気浄化装置、及び排気浄化装置の制御方法 | |
JP4396760B2 (ja) | 内燃機関の排気浄化装置 | |
JP2018087542A (ja) | 内燃機関の排気浄化装置 | |
JP2014137044A (ja) | 内燃機関の排気浄化装置 | |
JP2019190425A (ja) | 排気浄化装置および車両 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20140115 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20140908 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140912 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20141028 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20141118 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20141201 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 5668737 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |