JP2023085811A - 排気構造およびインジェクタ取付部材 - Google Patents
排気構造およびインジェクタ取付部材 Download PDFInfo
- Publication number
- JP2023085811A JP2023085811A JP2021200065A JP2021200065A JP2023085811A JP 2023085811 A JP2023085811 A JP 2023085811A JP 2021200065 A JP2021200065 A JP 2021200065A JP 2021200065 A JP2021200065 A JP 2021200065A JP 2023085811 A JP2023085811 A JP 2023085811A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust pipe
- urea water
- injector
- opening
- exhaust
- 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
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000003054 catalyst Substances 0.000 claims abstract description 35
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 7
- 239000004202 carbamide Substances 0.000 abstract description 7
- 239000000243 solution Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 41
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 20
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 229910021529 ammonia Inorganic materials 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- 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
-
- 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
- F01N3/24—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 constructional aspects of converting apparatus
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
まず、本開示に至った知見について、図1を用いて説明する。図1は、本開示の比較例としての排気構造1を模式的に示す側断面図である。
次に、本開示の実施の形態について、図2~図4を参照しながら説明する。なお、各図において共通する構成要素については同一の符号を付している。
10、20 インジェクタ取付部材
11 第1排気管
12 第2排気管
13、21 第1開口部
14、22 第2開口部
23 リブ
23a 垂直壁面
Claims (7)
- 内燃機関から排出された排ガスが流れる排気管と、尿素水の噴射を行う尿素水インジェクタと、前記排気管内において前記尿素水の噴射位置よりも下流側に設けられたSCR(Selective Catalytic Reduction)触媒と、前記尿素水インジェクタを前記排気管に固定的に取り付けるためのインジェクタ取付部材と、を備えた排気構造であって、
前記インジェクタ取付部材は、
軸方向に貫通した筒状体であり、
一方の開口部に前記尿素水インジェクタの噴口が配置され、他方の開口部が前記SCR触媒よりも上流側の前記排気管内に面するように前記排気管に取り付けられ、
前記インジェクタ取付部材の内周面には、
前記他方の開口部から前記一方の開口部へ向かう前記排ガスの流れを前記一方の開口部から前記他方の開口部へ向かう流れに方向転換させるリブが設けられている、
排気構造。 - 前記リブは、
前記軸方向に延伸している、
請求項1に記載の排気構造。 - 前記軸方向に延伸している前記リブの端部のうち、前記一方の開口部に近い方の端部は、
前記尿素水インジェクタの噴口から所定距離離間して設けられている、
請求項2に記載の排気構造。 - 前記リブは、
前記インジェクタ取付部材の内周面に対して垂直な壁面を有する、
請求項1から3のいずれか1項に記載の排気構造。 - 前記リブは、
前記インジェクタ取付部材の内周方向に沿って、所定間隔を空けて複数設けられている、
請求項1から4のいずれか1項に記載の排気構造。 - 前記排気管において前記SCR触媒よりも上流側かつ前記インジェクタ取付部材よりも下流側に接続され、前記排気管に前記排ガスを流入させる別の排気管をさらに備える、
請求項1から5のいずれか1項に記載の排気構造。 - 内燃機関から排出された排ガスが流れる排気管と、尿素水の噴射を行う尿素水インジェクタと、前記排気管内において前記尿素水の噴射位置よりも下流側に設けられたSCR(Selective Catalytic Reduction)触媒と、を備えた排気構造で用いられ、前記尿素水インジェクタを前記排気管に固定的に取り付けるためのインジェクタ取付部材であって、
軸方向に貫通した筒状体であり、
一方の開口部に前記尿素水インジェクタの噴口が配置され、他方の開口部が前記SCR触媒よりも上流側の前記排気管内に面するように前記排気管に取り付けられ、
内周面には、前記他方の開口部から前記一方の開口部へ向かう前記排ガスの流れを前記一方の開口部から前記他方の開口部へ向かう流れに方向転換させるリブが設けられている、
インジェクタ取付部材。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021200065A JP7428176B2 (ja) | 2021-12-09 | 2021-12-09 | 排気構造およびインジェクタ取付部材 |
CN202280078329.2A CN118302595A (zh) | 2021-12-09 | 2022-09-15 | 排气结构及喷射器安装部件 |
PCT/JP2022/034545 WO2023105876A1 (ja) | 2021-12-09 | 2022-09-15 | 排気構造およびインジェクタ取付部材 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021200065A JP7428176B2 (ja) | 2021-12-09 | 2021-12-09 | 排気構造およびインジェクタ取付部材 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2023085811A true JP2023085811A (ja) | 2023-06-21 |
JP7428176B2 JP7428176B2 (ja) | 2024-02-06 |
Family
ID=86730102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021200065A Active JP7428176B2 (ja) | 2021-12-09 | 2021-12-09 | 排気構造およびインジェクタ取付部材 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP7428176B2 (ja) |
CN (1) | CN118302595A (ja) |
WO (1) | WO2023105876A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005127271A (ja) * | 2003-10-27 | 2005-05-19 | Babcock Hitachi Kk | 尿素水気化器 |
JP2008151088A (ja) * | 2006-12-20 | 2008-07-03 | Denso Corp | 排気浄化装置 |
JP2009115057A (ja) * | 2007-11-09 | 2009-05-28 | Mitsubishi Motors Corp | 内燃機関の排気浄化装置 |
WO2014115461A1 (ja) * | 2013-01-25 | 2014-07-31 | フタバ産業株式会社 | 排ガス浄化装置 |
US10508579B2 (en) * | 2017-08-31 | 2019-12-17 | Friedrich Boysen Gmbh & Co. Kg | Mixer device |
-
2021
- 2021-12-09 JP JP2021200065A patent/JP7428176B2/ja active Active
-
2022
- 2022-09-15 CN CN202280078329.2A patent/CN118302595A/zh active Pending
- 2022-09-15 WO PCT/JP2022/034545 patent/WO2023105876A1/ja unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005127271A (ja) * | 2003-10-27 | 2005-05-19 | Babcock Hitachi Kk | 尿素水気化器 |
JP2008151088A (ja) * | 2006-12-20 | 2008-07-03 | Denso Corp | 排気浄化装置 |
JP2009115057A (ja) * | 2007-11-09 | 2009-05-28 | Mitsubishi Motors Corp | 内燃機関の排気浄化装置 |
WO2014115461A1 (ja) * | 2013-01-25 | 2014-07-31 | フタバ産業株式会社 | 排ガス浄化装置 |
US10508579B2 (en) * | 2017-08-31 | 2019-12-17 | Friedrich Boysen Gmbh & Co. Kg | Mixer device |
Also Published As
Publication number | Publication date |
---|---|
CN118302595A (zh) | 2024-07-05 |
JP7428176B2 (ja) | 2024-02-06 |
WO2023105876A1 (ja) | 2023-06-15 |
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