JP2005214171A - 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
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- JP2005214171A JP2005214171A JP2004025754A JP2004025754A JP2005214171A JP 2005214171 A JP2005214171 A JP 2005214171A JP 2004025754 A JP2004025754 A JP 2004025754A JP 2004025754 A JP2004025754 A JP 2004025754A JP 2005214171 A JP2005214171 A JP 2005214171A
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- Prior art keywords
- exhaust
- reducing agent
- injection nozzle
- engine
- pipe
- 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
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 88
- 238000002347 injection Methods 0.000 claims abstract description 78
- 239000007924 injection Substances 0.000 claims abstract description 78
- 239000007789 gas Substances 0.000 claims abstract description 31
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003054 catalyst Substances 0.000 claims abstract description 25
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 238000000746 purification Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000008021 deposition Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 19
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 239000002244 precipitate Substances 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
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
【解決手段】 エンジン1の排気管3に配設され、排気中の窒素酸化物を還元剤12により還元浄化する還元触媒4と、上記排気管3にて上記還元触媒4の排気上流側に取り付けられ、貯蔵タンク9内に蓄えられた還元剤12を排気中に噴射供給する噴射ノズル5と、を備えたエンジンの排気浄化装置において、上記噴射ノズル5は、上記排気管3の底壁部側にて先端部を鉛直上方に向けて取り付け、その先端部の噴孔5aより還元剤12を下方から上方に噴射させるようにしたものである。
【選択図】 図1
Description
2…排気マニフォールド
3…排気管
4…還元触媒
5…噴射ノズル
5a…噴孔
6…マフラ
7,7’…フランジ
8…供給パイプ
9…還元剤供給装置
10…供給配管
11…貯蔵タンク
12…還元剤
14…析出物
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、
上記排気系にて上記還元触媒の排気上流側に取り付けられ、排気中に上記還元剤を噴射供給する噴射ノズルと、を備えたエンジンの排気浄化装置において、
上記噴射ノズルは、上記排気系の配管の底壁部側にて先端部を鉛直上方又は斜め上方に向けて取り付け、その先端部の噴孔より還元剤を下方から上方に向けて噴射させるようにしたことを特徴とするエンジンの排気浄化装置。 - 上記噴射ノズルは、上記排気系の配管の底壁部に設けられた取り付け穴に着脱可能とされたことを特徴とする請求項1記載のエンジンの排気浄化装置。
- 上記取り付け穴は、排気流の流れ方向に所定の長さだけ延びて形成されており、上記噴射ノズルを上記配管に固定する固定手段は、上記取り付け穴に適合する形状とされ、該固定手段の排気上流側に上記噴射ノズルが配設されたことを特徴とする請求項2記載のエンジンの排気浄化装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004025754A JP4137807B2 (ja) | 2004-02-02 | 2004-02-02 | エンジンの排気浄化装置 |
PCT/JP2005/001529 WO2005073527A1 (ja) | 2004-02-02 | 2005-02-02 | 内燃機関の排気浄化装置 |
EP05709649A EP1712754A4 (en) | 2004-02-02 | 2005-02-02 | DEVICE FOR PURIFYING THE EXHAUST GASES OF AN INTERNAL COMBUSTION ENGINE |
US11/495,636 US8011176B2 (en) | 2004-02-02 | 2006-07-31 | Exhaust emission purifying apparatus for internal combustion engine |
US12/954,343 US20110067385A1 (en) | 2004-02-02 | 2010-11-24 | Exhaust emission purifying apparatus for internal combustion engine |
US12/954,337 US8578703B2 (en) | 2004-02-02 | 2010-11-24 | Exhaust emission purifying apparatus for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004025754A JP4137807B2 (ja) | 2004-02-02 | 2004-02-02 | エンジンの排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005214171A true JP2005214171A (ja) | 2005-08-11 |
JP4137807B2 JP4137807B2 (ja) | 2008-08-20 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004025754A Expired - Fee Related JP4137807B2 (ja) | 2004-02-02 | 2004-02-02 | エンジンの排気浄化装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4137807B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008082253A (ja) * | 2006-09-28 | 2008-04-10 | Nissan Diesel Motor Co Ltd | 液体還元剤噴射ノズルの構造 |
US7882697B2 (en) | 2006-07-27 | 2011-02-08 | Denso Corporation | Exhaust gas purification apparatus |
JP2017015081A (ja) * | 2015-06-29 | 2017-01-19 | ゼネラル・エレクトリック・カンパニイ | 発電システム排気冷却 |
-
2004
- 2004-02-02 JP JP2004025754A patent/JP4137807B2/ja not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7882697B2 (en) | 2006-07-27 | 2011-02-08 | Denso Corporation | Exhaust gas purification apparatus |
JP2008082253A (ja) * | 2006-09-28 | 2008-04-10 | Nissan Diesel Motor Co Ltd | 液体還元剤噴射ノズルの構造 |
JP2017015081A (ja) * | 2015-06-29 | 2017-01-19 | ゼネラル・エレクトリック・カンパニイ | 発電システム排気冷却 |
Also Published As
Publication number | Publication date |
---|---|
JP4137807B2 (ja) | 2008-08-20 |
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