JP5066435B2 - ディーゼルエンジン用の排ガス浄化装置 - Google Patents
ディーゼルエンジン用の排ガス浄化装置 Download PDFInfo
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- JP5066435B2 JP5066435B2 JP2007323494A JP2007323494A JP5066435B2 JP 5066435 B2 JP5066435 B2 JP 5066435B2 JP 2007323494 A JP2007323494 A JP 2007323494A JP 2007323494 A JP2007323494 A JP 2007323494A JP 5066435 B2 JP5066435 B2 JP 5066435B2
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- Prior art keywords
- exhaust gas
- reduction catalyst
- diesel engine
- selective reduction
- reducing agent
- Prior art date
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Classifications
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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
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
図1は、本発明の実施形態に係るディーゼルエンジン用の排ガス浄化装置100を示す図、図2は、図1のV部(主要部)内を流れる排ガスの様子、及び排ガス中に含まれる拡散物質の濃度分布を示す図である。図2(a)は、排ガスが流れる様子を示す図、図2(b)は、図2(a)のB−B線断面における拡散物質の濃度分布を示す図である。なお、図2(b)では、図3(b)の場合と同じ流体解析ソフトを使用している。
101 マフラ前部
102 マフラ後部
103 絞り部
103a 径が最小となる領域
103b 混合室
103c 拡散室
120 還元剤噴射ノズル
130 ミキサ構造体
Claims (1)
- ディーゼルエンジンから排出された排ガスを排気するための排気管と、この排気管内に設けられ前記排ガス中に含まれるNOxを浄化するための選択還元触媒と、この選択還元触媒より上流側の前記排気管内に設けられ当該選択還元触媒に向けて還元剤を噴射するための還元剤噴射ノズルと、を備えたディーゼルエンジン用の排ガス浄化装置であって、
前記選択還元触媒より上流側の前記排気管には、上流側から下流側に向けて漸次縮径してから漸次拡径されて下流側端部が前記選択還元触媒の上流側表面全体を覆うように構成された絞り部が形成されており、当該絞り部の内部であって、径が最小となる領域よりも上流側の部分にミキサ構造体が設けられ、当該ミキサ構造体と径が最小となる領域との間の前記絞り部内に、前記還元剤噴射ノズルが設けられていることを特徴とするディーゼルエンジン用の排ガス浄化装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2007323494A JP5066435B2 (ja) | 2007-12-14 | 2007-12-14 | ディーゼルエンジン用の排ガス浄化装置 |
Applications Claiming Priority (1)
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JP2007323494A JP5066435B2 (ja) | 2007-12-14 | 2007-12-14 | ディーゼルエンジン用の排ガス浄化装置 |
Publications (2)
Publication Number | Publication Date |
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JP2009144614A JP2009144614A (ja) | 2009-07-02 |
JP5066435B2 true JP5066435B2 (ja) | 2012-11-07 |
Family
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JP2007323494A Active JP5066435B2 (ja) | 2007-12-14 | 2007-12-14 | ディーゼルエンジン用の排ガス浄化装置 |
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JP (1) | JP5066435B2 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015105500A1 (en) * | 2014-01-10 | 2015-07-16 | Faurecia Emissions Control Technologies Usa, Llc | Modular mixer for exhaust assembly |
US10287948B1 (en) | 2018-04-23 | 2019-05-14 | Faurecia Emissions Control Technologies, Usa, Llc | High efficiency mixer for vehicle exhaust system |
US10316721B1 (en) | 2018-04-23 | 2019-06-11 | Faurecia Emissions Control Technologies, Usa, Llc | High efficiency mixer for vehicle exhaust system |
US10787946B2 (en) | 2018-09-19 | 2020-09-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated dosing mixer |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009236013A (ja) * | 2008-03-27 | 2009-10-15 | Mitsubishi Fuso Truck & Bus Corp | 内燃機関の排気浄化装置 |
WO2010078052A1 (en) | 2008-12-17 | 2010-07-08 | Donaldson Company, Inc. | Flow device for an exhaust system |
JP5500959B2 (ja) * | 2009-11-30 | 2014-05-21 | 日野自動車株式会社 | 排気浄化装置 |
US8539761B2 (en) | 2010-01-12 | 2013-09-24 | Donaldson Company, Inc. | Flow device for exhaust treatment system |
EP2529091B1 (fr) | 2010-01-25 | 2016-04-06 | Peugeot Citroën Automobiles SA | Dispositif de post-traitement des gaz d'échappement d'un moteur à combustion interne |
US9670811B2 (en) | 2010-06-22 | 2017-06-06 | Donaldson Company, Inc. | Dosing and mixing arrangement for use in exhaust aftertreatment |
WO2012080585A1 (fr) | 2010-12-15 | 2012-06-21 | Faurecia Systemes D'echappement | Ligne d'échappement avec dispositif d'injection de réactif gazeux |
EP2716884A4 (en) * | 2011-06-02 | 2014-12-03 | Toyota Motor Co Ltd | EXHAUST GAS PURIFYING DEVICE FOR INTERNAL COMBUSTION ENGINE |
US8938954B2 (en) | 2012-04-19 | 2015-01-27 | Donaldson Company, Inc. | Integrated exhaust treatment device having compact configuration |
US9707525B2 (en) | 2013-02-15 | 2017-07-18 | Donaldson Company, Inc. | Dosing and mixing arrangement for use in exhaust aftertreatment |
CN104594990B (zh) * | 2015-02-27 | 2017-06-23 | 天纳克(苏州)排放系统有限公司 | 混合管及其排气处理装置 |
US9534525B2 (en) | 2015-05-27 | 2017-01-03 | Tenneco Automotive Operating Company Inc. | Mixer assembly for exhaust aftertreatment system |
KR102287319B1 (ko) * | 2019-11-20 | 2021-08-09 | 현대자동차주식회사 | 배기가스 후처리장치 및 그의 제어방법 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3620291B2 (ja) * | 1998-06-22 | 2005-02-16 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP4445137B2 (ja) * | 2001-01-12 | 2010-04-07 | 株式会社小松製作所 | エンジンの排気浄化構造 |
JP3892452B2 (ja) * | 2004-07-16 | 2007-03-14 | 日産ディーゼル工業株式会社 | エンジンの排気浄化装置 |
JP3686666B1 (ja) * | 2004-08-31 | 2005-08-24 | 日産ディーゼル工業株式会社 | エンジンの排気浄化装置 |
JP4502800B2 (ja) * | 2004-12-27 | 2010-07-14 | 三菱ふそうトラック・バス株式会社 | 内燃機関の排ガス攪拌装置 |
JP2007100508A (ja) * | 2005-09-30 | 2007-04-19 | Bosch Corp | 内燃機関の排気浄化装置、及び内燃機関の排気浄化方法 |
JP4651560B2 (ja) * | 2006-03-06 | 2011-03-16 | 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 |
-
2007
- 2007-12-14 JP JP2007323494A patent/JP5066435B2/ja active Active
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015105500A1 (en) * | 2014-01-10 | 2015-07-16 | Faurecia Emissions Control Technologies Usa, Llc | Modular mixer for exhaust assembly |
CN105899776A (zh) * | 2014-01-10 | 2016-08-24 | 佛吉亚排放控制技术美国有限公司 | 用于排气组件的模块化混合器 |
US10287954B2 (en) | 2014-01-10 | 2019-05-14 | Faurecia Emissions Control Technologies Usa, Llc | Modular mixer for exhaust assembly |
CN105899776B (zh) * | 2014-01-10 | 2019-07-23 | 佛吉亚排放控制技术美国有限公司 | 用于排气组件的模块化混合器 |
US10287948B1 (en) | 2018-04-23 | 2019-05-14 | Faurecia Emissions Control Technologies, Usa, Llc | High efficiency mixer for vehicle exhaust system |
US10316721B1 (en) | 2018-04-23 | 2019-06-11 | Faurecia Emissions Control Technologies, Usa, Llc | High efficiency mixer for vehicle exhaust system |
US10787946B2 (en) | 2018-09-19 | 2020-09-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated dosing mixer |
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