JP4214073B2 - 尿素水添加装置 - Google Patents
尿素水添加装置 Download PDFInfo
- Publication number
- JP4214073B2 JP4214073B2 JP2004091726A JP2004091726A JP4214073B2 JP 4214073 B2 JP4214073 B2 JP 4214073B2 JP 2004091726 A JP2004091726 A JP 2004091726A JP 2004091726 A JP2004091726 A JP 2004091726A JP 4214073 B2 JP4214073 B2 JP 4214073B2
- Authority
- JP
- Japan
- Prior art keywords
- urea water
- exhaust gas
- exhaust
- catalyst
- inlet
- 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 - Fee Related
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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
-
- 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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- Exhaust Gas After Treatment (AREA)
Description
[化1]
(NH2)2CO+H2O→2NH3+CO2
により効率良くアンモニアと炭酸ガスに分解させるようになっている。
3 選択還元型触媒
6 尿素水分解触媒
8 噴射ノズル
10 ヒータ
11 尿素水
15 排気流路
16 筒体
17 導入口
18 排出口
19 導風板
20 ベルマウス
23 尿素水添加装置
Claims (3)
- NOxを還元浄化する選択還元型触媒の上流側に還元剤として尿素水を添加し得るようにした尿素水添加装置であって、選択還元型触媒の入側の排気流路内に該排気流路の外周部から中心部付近まで延在する筒体を設け、該筒体の内部の先端側に尿素水をアンモニアと炭酸ガスに分解する尿素水分解触媒を収容せしめると共に、前記筒体の基端側に上流側からの排気ガスの流れをそのまま直進させるべく導入口と排出口を開口せしめ、この導入口から排出口へ向かう排気ガスの流れを横断して前記尿素水分解触媒へ尿素水を噴射し得るよう排気流路外に噴射ノズルを設け、該噴射ノズルの噴射方向における前記尿素水分解触媒の入口付近にヒータを配置したことを特徴とする尿素水添加装置。
- 筒体の排出口の直後に該排出口からの排気ガスの流れを排気流路の広範囲に拡散し得るよう導風板を配設したことを特徴とする請求項1に記載の尿素水添加装置。
- 筒体の導入口に排気ガスを整流して取り込むベルマウスを設けたことを特徴とする請求項1又は2に記載の尿素水添加装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004091726A JP4214073B2 (ja) | 2004-03-26 | 2004-03-26 | 尿素水添加装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004091726A JP4214073B2 (ja) | 2004-03-26 | 2004-03-26 | 尿素水添加装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005273614A JP2005273614A (ja) | 2005-10-06 |
JP4214073B2 true JP4214073B2 (ja) | 2009-01-28 |
Family
ID=35173549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004091726A Expired - Fee Related JP4214073B2 (ja) | 2004-03-26 | 2004-03-26 | 尿素水添加装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4214073B2 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005344597A (ja) * | 2004-06-02 | 2005-12-15 | Hitachi Ltd | エンジン用排気ガス処理装置 |
JP4888171B2 (ja) * | 2006-07-27 | 2012-02-29 | 株式会社デンソー | 排気浄化装置 |
JP4887245B2 (ja) * | 2007-09-06 | 2012-02-29 | 株式会社日立ハイテクノロジーズ | 排気処理用の尿素水注入装置 |
GB2460825A (en) | 2008-06-06 | 2009-12-16 | Delphi Tech Inc | Reagent dosing system |
JP5004308B2 (ja) * | 2008-11-18 | 2012-08-22 | 三菱ふそうトラック・バス株式会社 | エンジンの排気浄化装置 |
JP5417958B2 (ja) * | 2009-04-15 | 2014-02-19 | 株式会社Ihi | バーナ装置 |
JP5224294B2 (ja) * | 2009-08-10 | 2013-07-03 | 三菱ふそうトラック・バス株式会社 | エンジンの排気浄化装置 |
JP5555023B2 (ja) * | 2010-03-19 | 2014-07-23 | 日野自動車株式会社 | 排気浄化装置 |
JP6972967B2 (ja) * | 2017-11-27 | 2021-11-24 | いすゞ自動車株式会社 | 後処理制御装置および後処理制御方法 |
-
2004
- 2004-03-26 JP JP2004091726A patent/JP4214073B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2005273614A (ja) | 2005-10-06 |
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