JP3732493B2 - エンジンの排気浄化装置 - Google Patents
エンジンの排気浄化装置 Download PDFInfo
- Publication number
- JP3732493B2 JP3732493B2 JP2003344757A JP2003344757A JP3732493B2 JP 3732493 B2 JP3732493 B2 JP 3732493B2 JP 2003344757 A JP2003344757 A JP 2003344757A JP 2003344757 A JP2003344757 A JP 2003344757A JP 3732493 B2 JP3732493 B2 JP 3732493B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- injection nozzle
- reducing agent
- supply
- nozzle
- 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.)
- Expired - Lifetime
Links
- 238000000746 purification Methods 0.000 title claims description 18
- 238000002347 injection Methods 0.000 claims description 101
- 239000007924 injection Substances 0.000 claims description 101
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 86
- 239000003638 chemical reducing agent Substances 0.000 claims description 71
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 32
- 239000004202 carbamide Substances 0.000 claims description 32
- 239000003054 catalyst Substances 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 15
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 33
- 239000007787 solid Substances 0.000 description 20
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- 238000006722 reduction reaction Methods 0.000 description 18
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 5
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
3…還元触媒
4…排気管
5…噴射ノズル
6…還元剤供給装置
7…貯蔵タンク
8…供給配管
9…排気温度センサ
11…尿素水の供給バルブ
13…エア供給バルブ
14…還元剤供給制御回路
15…圧力センサ
16…共通配管
Claims (3)
- エンジンの排気系に配設され、排気中の窒素酸化物を還元剤により還元浄化する還元触媒と、
還元剤と共に圧縮空気が供給され該還元剤を霧化して、前記排気系の排気通路内にて前記還元触媒の排気上流側に噴射供給する噴射ノズルを有する還元剤供給手段と、
前記噴射ノズルの排気上流側の近傍に設けられ、排気通路内の排気温度を検出する温度検出手段と、
を備えたエンジンの排気浄化装置であって、
前記還元剤供給手段は、前記噴射ノズルの内部圧力を検出する圧力検出手段と、該圧力検出手段からの噴射ノズルの内部圧力の検出信号を入力すると共に前記温度検出手段からの排気温度の検出信号を入力し、噴射ノズルの内部圧力が所定値以上となったら噴射ノズルへの圧縮空気と還元剤の供給を停止し、噴射ノズル近傍の排気温度が還元剤の融点以上となったら噴射ノズルへ圧縮空気と還元剤の供給を再開するように制御する制御回路とを備えたことを特徴とするエンジンの排気浄化装置。 - 前記還元剤は、尿素水溶液であることを特徴とする請求項1に記載のエンジンの排気浄化装置。
- 前記噴射ノズルへ圧縮空気と還元剤の供給を再開する際における噴射ノズル近傍の排気温度は、132℃以上であることを特徴とする請求項2に記載のエンジンの排気浄化装置。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003344757A JP3732493B2 (ja) | 2003-10-02 | 2003-10-02 | エンジンの排気浄化装置 |
CN2008101106559A CN101328827B (zh) | 2003-10-02 | 2004-09-13 | 发动机的排气净化装置 |
AT04772987T ATE520868T1 (de) | 2003-10-02 | 2004-09-13 | Abgasreiniger für motor |
PCT/JP2004/013305 WO2005033482A1 (ja) | 2003-10-02 | 2004-09-13 | エンジンの排気浄化装置 |
ES04772987T ES2367485T3 (es) | 2003-10-02 | 2004-09-13 | Filtro de gases de escape para un motor. |
EP04772987A EP1672191B1 (en) | 2003-10-02 | 2004-09-13 | Exhaust gas cleaner for engine |
CNB2004800286338A CN100404808C (zh) | 2003-10-02 | 2004-09-13 | 发动机的排气净化装置 |
US10/574,341 US7703276B2 (en) | 2003-10-02 | 2004-09-13 | Exhaust gas purifying apparatus for engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003344757A JP3732493B2 (ja) | 2003-10-02 | 2003-10-02 | エンジンの排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005113687A JP2005113687A (ja) | 2005-04-28 |
JP3732493B2 true JP3732493B2 (ja) | 2006-01-05 |
Family
ID=34538283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003344757A Expired - Lifetime JP3732493B2 (ja) | 2003-10-02 | 2003-10-02 | エンジンの排気浄化装置 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP3732493B2 (ja) |
CN (2) | CN100404808C (ja) |
ES (1) | ES2367485T3 (ja) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4673145B2 (ja) * | 2005-06-24 | 2011-04-20 | 株式会社サムソン | 尿素水噴射ノズルの詰まりを自動解消する脱硝装置 |
JP4949152B2 (ja) | 2007-07-20 | 2012-06-06 | 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 |
JP4949151B2 (ja) | 2007-07-20 | 2012-06-06 | 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 |
JP2009097438A (ja) * | 2007-10-17 | 2009-05-07 | Mitsubishi Fuso Truck & Bus Corp | 排気浄化装置 |
JP2009097479A (ja) * | 2007-10-19 | 2009-05-07 | Bosch Corp | 還元剤供給装置の制御装置及び制御方法 |
JP2011526983A (ja) * | 2008-07-07 | 2011-10-20 | グルンドフォス ノノックス エー/エス | 燃焼エンジンの排気システムにおいて用いるための投入システム |
US8266894B2 (en) * | 2008-12-23 | 2012-09-18 | GM Global Technology Operations LLC | Thermal protection system for reducing agent injector |
US20110036078A1 (en) * | 2009-08-14 | 2011-02-17 | International Engine Intellectual Property Company , Llc | Method for urea injection control |
JP5091933B2 (ja) * | 2009-10-01 | 2012-12-05 | 日立建機株式会社 | 排気浄化装置 |
JP5325850B2 (ja) * | 2009-10-30 | 2013-10-23 | ボッシュ株式会社 | 還元剤噴射弁の異常検出装置及び異常検出方法、並びに内燃機関の排気浄化装置 |
JP5678475B2 (ja) * | 2010-05-25 | 2015-03-04 | いすゞ自動車株式会社 | Scrシステム |
SE536318C2 (sv) * | 2010-06-21 | 2013-08-20 | Scania Cv Ab | Förfarande och anordning för att avlägsna reduktionsmedel ur en doseringsenhet vid ett SCR-system |
SE537642C2 (sv) * | 2010-06-21 | 2015-09-08 | Scania Cv Ab | Förfarande och anordning vid kylning av en doseringsenhet för reduktionsmedel |
SE534974C2 (sv) * | 2010-06-21 | 2012-03-06 | Scania Cv Ab | Förfarande och anordning för att baserat på en doseringsenhets kylbehov bestämma miniminivån i en reduktionsmedelsbehållare i ett SCR-system |
SE536316C2 (sv) * | 2010-06-21 | 2013-08-20 | Scania Cv Ab | Förfarande och anordning för att avlägsna bränsle ur en doseringsenhet vid ett HC-doseringssystem |
CN102562237B (zh) * | 2010-12-21 | 2016-06-08 | 中国第一汽车集团公司无锡油泵油嘴研究所 | 柴油机尾气处理装置中还原剂投放量的控制方法 |
US9212582B2 (en) | 2010-12-27 | 2015-12-15 | Bosch Corporation | Exhaust gas purification system and method for controlling the same |
US9261006B2 (en) * | 2013-03-01 | 2016-02-16 | Cummins Ip, Inc. | Apparatus, method and system for diagnosing reductant deposits in an exhaust aftertreatment system |
US9234445B2 (en) * | 2013-06-06 | 2016-01-12 | Cummins Emission Solutions Inc. | Systems and techniques for nozzle cooling of diesel exhaust fluid injection systems |
US9056279B1 (en) * | 2014-01-14 | 2015-06-16 | General Electric Company | Systems and methods for controlling emissions in an internal combustion engine through the control of temperature at the inlet of an ammonia slip catalyst assembly |
JP2016094863A (ja) | 2014-11-13 | 2016-05-26 | いすゞ自動車株式会社 | 尿素水噴射システム及び尿素水噴射装置の結晶化防止方法 |
KR102240005B1 (ko) * | 2014-12-05 | 2021-04-14 | 두산인프라코어 주식회사 | 선택적 환원 촉매 시스템 및 환원제 분사 모듈의 온도 제어 방법 |
DE102015016244A1 (de) * | 2015-12-16 | 2017-06-22 | Albonair Gmbh | Hitzeresistente Reduktionsmitteleinspritzdüse |
CN110645112B (zh) * | 2019-09-29 | 2022-04-26 | 潍柴动力股份有限公司 | 发动机故障检测方法、装置和发动机 |
JP7254010B2 (ja) * | 2019-11-19 | 2023-04-07 | 日立造船株式会社 | 加水分解システム、脱硝設備及び加水分解システムの制御方法 |
CN112943420A (zh) * | 2021-03-09 | 2021-06-11 | 广西玉柴机器股份有限公司 | 一种修正尿素喷射量防止尿素结晶的策略 |
CN113294229B (zh) * | 2021-05-08 | 2022-10-18 | 亿元达(天津)机电科技有限公司 | 汽车节能环保净化器 |
CN113982723A (zh) * | 2021-09-30 | 2022-01-28 | 东风商用车有限公司 | 一种尿素喷嘴保护的控制方法 |
CN115217584B (zh) * | 2022-03-01 | 2024-03-08 | 广州汽车集团股份有限公司 | 氢气发动机的排气处理装置及排气处理方法、车辆 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2088713C (en) * | 1992-02-24 | 1999-11-16 | Hans Thomas Hug | Cleaning exhaust gases from combustion installations |
DE4436397B4 (de) * | 1994-10-12 | 2006-06-08 | Robert Bosch Gmbh | Einrichtung zum Nachbehandeln von Abgasen |
DE10154421A1 (de) * | 2001-11-06 | 2003-05-22 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Verminderung von Stickoxiden eines Abgases |
JP3855781B2 (ja) * | 2002-01-29 | 2006-12-13 | トヨタ自動車株式会社 | 還元剤供給装置 |
JP2003269141A (ja) * | 2002-03-11 | 2003-09-25 | Mitsui & Co Ltd | 排煙脱硝用の還元剤組成物 |
JP3956728B2 (ja) * | 2002-03-11 | 2007-08-08 | 三菱ふそうトラック・バス株式会社 | 内燃機関のNOx浄化装置 |
-
2003
- 2003-10-02 JP JP2003344757A patent/JP3732493B2/ja not_active Expired - Lifetime
-
2004
- 2004-09-13 CN CNB2004800286338A patent/CN100404808C/zh active Active
- 2004-09-13 ES ES04772987T patent/ES2367485T3/es active Active
- 2004-09-13 CN CN2008101106559A patent/CN101328827B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN100404808C (zh) | 2008-07-23 |
CN101328827A (zh) | 2008-12-24 |
CN101328827B (zh) | 2011-04-06 |
ES2367485T3 (es) | 2011-11-03 |
JP2005113687A (ja) | 2005-04-28 |
CN1863987A (zh) | 2006-11-15 |
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