JP2019190381A - 排気ガス処理システム - Google Patents
排気ガス処理システム Download PDFInfo
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- JP2019190381A JP2019190381A JP2018084490A JP2018084490A JP2019190381A JP 2019190381 A JP2019190381 A JP 2019190381A JP 2018084490 A JP2018084490 A JP 2018084490A JP 2018084490 A JP2018084490 A JP 2018084490A JP 2019190381 A JP2019190381 A JP 2019190381A
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- exhaust gas
- urea
- nox
- catalyst
- nox purification
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- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- 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
- F01N13/009—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 having two or more separate purifying devices arranged in series
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- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
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- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- 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
- F01N3/103—Oxidation catalysts for HC and CO only
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- 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
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
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- 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
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- 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
- F01N3/28—Construction of catalytic reactors
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- 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
- F01N3/36—Arrangements for supply of additional fuel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
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- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
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- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/04—Adding substances to exhaust gases the substance being hydrogen
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- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
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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
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
DOC(Diesel Oxidation Catalyst)は、この触媒上で、排気ガス中のHC、CO、およびNOxを無害化するものである。
DPF(Diesel Particulate filter)は、排気ガス中に含まれる粒子状物質(PM)を捕集する装置である。DPFの種類については、特に限定されるものではなく、公知のものが用いられる。
尿素SCRは、尿素によってNOxを浄化する触媒であり、DPFの後段に設けられる。尿素が活性化しない低温領域においてはDOCに軽油とH2を添加することで、DOCがNOx浄化の役割を果たし、高温領域においては尿素SCRに尿素を添加することで、尿素SCRがNOx浄化の役割を果たすことができる。このようなハイブリッド効果により、幅広い温度領域においてNOx浄化性能を高めることが可能である。
ASC(Ammonia Slip Catalyst)は、尿素SCR中で反応に携わることのできなかった余剰のアンモニアを浄化する触媒であり、尿素SCRの後段に設けられる。
その他、前記DOC(以下、「前段DOC」)、およびDPFの後段に、余剰のHCを酸化除去する一つのDOC(図示なし。以下、「後段DOC」)を設けてもよい。本実施形態に係る排気ガス処理システムにおいては、NOxを浄化するために軽油を通常より多く添加する場合がある。その場合、前段DOCでは消費、浄化できないHCが多く発生してしまう。具体的には、尿素SCRは、一般的に、DOCと異なり白金族金属を含有しない。そのため、浄化できなかった余剰のHCが尿素SCR上で蓄積したり、或いは尿素SCRを通過してASCまで到達したりする場合がある。後段DOCは、このような余剰のHCを浄化するために設けられる。
H2濃度を段階的に増加させた場合のNOx浄化特性の変化を確認した。
実施例1で用いられる触媒は、DOCに相当するものである。具体的な組成としては、Pt6.0g/L、サイズは、Φ1.0インチ×50mmである。なお、実施例2〜4においても同様である。
C3H6:1300ppmC、CO:200ppm、NO:200ppm、CO2:5%、O2:10%、H2O:5%、SO2:2ppm、H2:(図2のグラフ参照)、N2:残量である。なお、「ppmC」は、排出濃度を示す単位であり、「ppm」に炭素数を乗じた値である。
・触媒熱処理:600℃、50時間
・ガス流量:24L/min(SV:60000/h)
・温度:室温から500℃まで昇温後、10℃/minで降温しながら測定
H2濃度を段階的に増加させた場合のHCによるNOxの浄化特性の変化を確認した。なお、評価条件については、実施例1と同一である。
C3H6:1300ppmC、CO:200ppm、NO:200ppm、CO2:5%、O2:10%、H2O:5%、SO2:2ppm、H2:(図5のグラフ参照)、N2:残量 である。
H2の有無、およびHCの有無と、NOx浄化率との関係を確認した。なお、評価条件については、実施例1と同一である。
C3H6:0 or 1300ppmC、CO:200ppm、NO:200ppm、CO2:5%、O2:10%、H2O:5%、SO2:2ppm、H2:0 or 2000ppm、N2:残量 である。
170℃におけるH2濃度、およびHC濃度と、NOx浄化率との関係を確認した。なお、170℃とは、実施例3における(H2有り、HC有り)において浄化率がピークをむかえる温度である。また、評価条件については、実施例1と同一である。
C3H6:グラフ参照、CO:200ppm、NO:200ppm、CO2:5%、O2:10%、H2O:5%、SO2:2ppm、H2:(図7のグラフ参照)、N2:残量 である。
Claims (2)
- 排気ガスの流入順に、炭化水素を用いて前記排気ガス中のNOxを浄化するディーゼル酸化触媒、ディーゼル微粒子フィルタ、および、尿素によってNOxを浄化する尿素SCR触媒を備える排気ガス処理システムにおいて、前記ディーゼル酸化触媒に、炭化水素と併せてH2を添加することを特徴とする、排気ガス処理システム。
- さらに、前記尿素SCR触媒の後段に、前記尿素の分解物である余剰のアンモニアを浄化する触媒を備えることを特徴とする、請求項1に記載の排気ガス処理システム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018084490A JP2019190381A (ja) | 2018-04-25 | 2018-04-25 | 排気ガス処理システム |
CA3060301A CA3060301A1 (en) | 2018-04-25 | 2019-04-22 | Exhaust gas treatment system and exhaust gas purification method |
US16/608,335 US20200191036A1 (en) | 2018-04-25 | 2019-04-22 | Exhaust gas treatment system and exhaust gas purification method |
PCT/JP2019/016970 WO2019208478A1 (ja) | 2018-04-25 | 2019-04-22 | 排気ガス処理システム、排気ガス浄化方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018084490A JP2019190381A (ja) | 2018-04-25 | 2018-04-25 | 排気ガス処理システム |
Publications (1)
Publication Number | Publication Date |
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JP2019190381A true JP2019190381A (ja) | 2019-10-31 |
Family
ID=68294536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018084490A Pending JP2019190381A (ja) | 2018-04-25 | 2018-04-25 | 排気ガス処理システム |
Country Status (4)
Country | Link |
---|---|
US (1) | US20200191036A1 (ja) |
JP (1) | JP2019190381A (ja) |
CA (1) | CA3060301A1 (ja) |
WO (1) | WO2019208478A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004532374A (ja) * | 2001-06-12 | 2004-10-21 | ダイムラークライスラー・アクチェンゲゼルシャフト | 還元剤供給部付き排気ガス浄化ユニット |
JP2009150279A (ja) * | 2007-12-19 | 2009-07-09 | Hino Motors Ltd | 排気処理装置 |
JP2011527404A (ja) * | 2008-07-07 | 2011-10-27 | デルファイ・テクノロジーズ・インコーポレーテッド | 希薄燃焼内燃機関の排気ガス用の二元触媒NOx還元システム |
JP2012087703A (ja) * | 2010-10-20 | 2012-05-10 | Hino Motors Ltd | 内燃機関の排気処理装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3454336B2 (ja) * | 1996-07-12 | 2003-10-06 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2002070538A (ja) * | 2000-08-31 | 2002-03-08 | Toyota Central Res & Dev Lab Inc | NOx浄化方法 |
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2018
- 2018-04-25 JP JP2018084490A patent/JP2019190381A/ja active Pending
-
2019
- 2019-04-22 US US16/608,335 patent/US20200191036A1/en not_active Abandoned
- 2019-04-22 CA CA3060301A patent/CA3060301A1/en active Pending
- 2019-04-22 WO PCT/JP2019/016970 patent/WO2019208478A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004532374A (ja) * | 2001-06-12 | 2004-10-21 | ダイムラークライスラー・アクチェンゲゼルシャフト | 還元剤供給部付き排気ガス浄化ユニット |
JP2009150279A (ja) * | 2007-12-19 | 2009-07-09 | Hino Motors Ltd | 排気処理装置 |
JP2011527404A (ja) * | 2008-07-07 | 2011-10-27 | デルファイ・テクノロジーズ・インコーポレーテッド | 希薄燃焼内燃機関の排気ガス用の二元触媒NOx還元システム |
JP2012087703A (ja) * | 2010-10-20 | 2012-05-10 | Hino Motors Ltd | 内燃機関の排気処理装置 |
Also Published As
Publication number | Publication date |
---|---|
WO2019208478A1 (ja) | 2019-10-31 |
US20200191036A1 (en) | 2020-06-18 |
CA3060301A1 (en) | 2019-10-25 |
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