JP6015684B2 - 還元剤添加装置 - Google Patents
還元剤添加装置 Download PDFInfo
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- JP6015684B2 JP6015684B2 JP2014015933A JP2014015933A JP6015684B2 JP 6015684 B2 JP6015684 B2 JP 6015684B2 JP 2014015933 A JP2014015933 A JP 2014015933A JP 2014015933 A JP2014015933 A JP 2014015933A JP 6015684 B2 JP6015684 B2 JP 6015684B2
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- Prior art keywords
- fuel
- temperature
- reducing agent
- flow rate
- reaction chamber
- Prior art date
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- Expired - Fee Related
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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
- F01N3/0892—Electric or magnetic treatment, e.g. dissociation of noxious components
-
- 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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/30—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel reformer
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/38—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an ozone (O3) generator, e.g. for adding ozone after generation of ozone from air
-
- 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
-
- 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
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
- F01N2610/105—Control thereof
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1602—Temperature of exhaust gas apparatus
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
- F01N2900/1806—Properties of reducing agent or dosing system
- F01N2900/1811—Temperature
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
図1に示す燃焼システムは、以下に詳述する内燃機関10、過給機11、微粒子捕集装置(DPF14)、DPF再生装置(再生用DOC14a)、NOx浄化装置15、還元剤浄化装置(浄化用DOC16)および還元剤添加装置を備える。燃焼システムは車両に搭載されたものであり、当該車両は、内燃機関10の出力を駆動源として走行する。内燃機関10は、圧縮自着火式のディーゼルエンジンであり、燃焼に用いる燃料には軽油を用いている。
図1に示す実施形態では、エアポンプ20pにより放電リアクタ20へ空気を供給している。これに対し、図15に示す本実施形態では、内燃機関10の吸気の一部を分岐させて放電リアクタ20へ流入させる。
図1および図15に示す実施形態では、放電リアクタ20を備えることにより、反応容器30へオゾンを供給している。これに対し、図16に示す本実施形態では、放電リアクタ20を廃止している。これによれば、オゾンの供給により反応容器30での反応速度の向上を図ることができないものの、放電リアクタ20を廃止して、装置の小型化を図ることができる。
以上、発明の好ましい実施形態について説明したが、発明は上述した実施形態に何ら制限されることなく、以下に例示するように種々変形して実施することが可能である。各実施形態で具体的に組合せが可能であることを明示している部分同士の組合せばかりではなく、特に組合せに支障が生じなければ、明示してなくとも実施形態同士を部分的に組み合せることも可能である。
Claims (6)
- 内燃機関(10)の排気に含まれるNOxを還元触媒上で浄化するNOx浄化装置(15)が排気通路(10ex)に備えられた燃焼システムに設けられ、前記排気通路のうち前記還元触媒の上流側へ還元剤を添加する還元剤添加装置において、
炭化水素化合物である燃料と空気を混合させ、空気中の酸素により燃料を酸化反応させる反応室(30a、30b)を内部に形成する反応容器(30)と、
前記反応室へ供給される燃料と空気の比率である当量比を、所定の当量比範囲に調整する当量比調整手段(S40)と、
前記反応室の温度を所定の温度範囲に調整する温度調整手段(S30)と、を備え、
前記当量比範囲および前記温度範囲は、前記反応室の燃料が空気中の酸素により部分的に酸化される冷炎反応が生じるように設定されており、
前記冷炎反応により部分的に酸化された燃料を前記還元剤として用いており、
前記当量比調整手段は、前記反応室の温度に応じて、前記当量比の目標値である目標当量比(φtrg)を変更することを特徴とする還元剤添加装置。 - オゾンを生成するオゾン生成装置(20)を備え、
前記冷炎反応を生じさせる時には、前記オゾン生成装置により生成されたオゾンを前記反応室へ供給することを特徴とする請求項1に記載の還元剤添加装置。 - 前記オゾン生成装置は、空気への放電によりオゾンを生成するものであり、
前記反応室での燃料の濃度に応じて、前記放電に用いる電力を制御する放電電力制御手段(S50)を備えることを特徴とする請求項2に記載の還元剤添加装置。 - 前記還元触媒が活性化温度未満である場合には、前記反応室への燃料供給を停止させつつ、前記オゾン生成装置により生成されたオゾンを前記反応室へ供給させることで、前記排気通路のうち前記還元触媒の上流側へオゾンを添加することを特徴とする請求項2または3に記載の還元剤添加装置。
- 前記反応室へ供給された燃料を加熱するヒータ(50)と、
前記反応室の温度を検出する温度センサ(31)と、を備え、
前記温度調整手段は、前記温度センサにより検出された温度に応じて前記ヒータの作動を制御することで、前記反応室の温度を所定の温度範囲に調整することを特徴とする請求項1〜4のいずれか1つに記載の還元剤添加装置。 - 前記当量比調整手段は、前記反応室へ供給される燃料の流量を制御する燃料流量制御手段(S44、S47)、および前記反応室へ供給される空気の流量を制御する空気流量制御手段(S41、S42、S43、S45、S46)を有し、
前記燃料流量制御手段は、前記反応室へ供給される燃料流量の目標値である目標燃料流量(Ftrg)を、前記NOx浄化装置にて要求される還元剤の流量に基づき設定し、
前記空気流量制御手段は、前記反応室へ供給される空気流量の目標値である目標空気流量(Atrg)を、前記当量比が前記所定の当量比範囲となるよう、前記目標燃料流量に基づき設定することを特徴とする請求項1〜5のいずれか1つに記載の還元剤添加装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014015933A JP6015684B2 (ja) | 2014-01-30 | 2014-01-30 | 還元剤添加装置 |
DE102015100203.5A DE102015100203A1 (de) | 2014-01-30 | 2015-01-09 | Reduktionsmittel-Zuführvorrichtung |
FR1550642A FR3016920B1 (fr) | 2014-01-30 | 2015-01-28 | Dispositif de fourniture d'un agent reducteur |
US14/608,694 US9528410B2 (en) | 2014-01-30 | 2015-01-29 | Reducing agent supplying device |
CN201510047981.XA CN104819038B (zh) | 2014-01-30 | 2015-01-30 | 还原剂供应设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014015933A JP6015684B2 (ja) | 2014-01-30 | 2014-01-30 | 還元剤添加装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015140792A JP2015140792A (ja) | 2015-08-03 |
JP6015684B2 true JP6015684B2 (ja) | 2016-10-26 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2014015933A Expired - Fee Related JP6015684B2 (ja) | 2014-01-30 | 2014-01-30 | 還元剤添加装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9528410B2 (ja) |
JP (1) | JP6015684B2 (ja) |
CN (1) | CN104819038B (ja) |
DE (1) | DE102015100203A1 (ja) |
FR (1) | FR3016920B1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6107748B2 (ja) * | 2014-06-20 | 2017-04-05 | 株式会社デンソー | 還元剤添加装置 |
JP6376088B2 (ja) * | 2015-09-08 | 2018-08-22 | 株式会社デンソー | オゾン供給装置 |
US10288017B1 (en) * | 2017-10-25 | 2019-05-14 | GM Global Technology Operations LLC | Model based control to manage eDOC temperature |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3565035B2 (ja) * | 1998-07-10 | 2004-09-15 | 三菱ふそうトラック・バス株式会社 | 燃焼排ガス用NOx還元システム |
JP3531489B2 (ja) * | 1998-08-05 | 2004-05-31 | 三菱ふそうトラック・バス株式会社 | 燃焼排ガス用NO▲x▼還元システム |
JP3948255B2 (ja) * | 2001-11-12 | 2007-07-25 | 株式会社デンソー | 内燃機関の排気浄化装置 |
US20040098976A1 (en) * | 2002-11-21 | 2004-05-27 | Van Nieuwstadt Michiel J. | Diesel aftertreatment systems |
US7093429B1 (en) * | 2005-06-01 | 2006-08-22 | Gm Global Technology Operations Inc. | Reforming diesel fuel for NOx reduction |
JP2007100578A (ja) * | 2005-10-04 | 2007-04-19 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2008069663A (ja) * | 2006-09-12 | 2008-03-27 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
SI2198132T1 (sl) * | 2007-08-30 | 2011-06-30 | Energy Conversion Technology As | Naprava za izpušne pline in postopek regeneracije pasti za NOx in filtra delcev |
JP4803186B2 (ja) | 2008-01-09 | 2011-10-26 | トヨタ自動車株式会社 | 燃料改質装置 |
JP2009264320A (ja) * | 2008-04-28 | 2009-11-12 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
US8099951B2 (en) * | 2008-11-24 | 2012-01-24 | GM Global Technology Operations LLC | Dual bed catalyst system for NOx reduction in lean-burn engine exhaust |
JP2010249100A (ja) * | 2009-04-20 | 2010-11-04 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
WO2012124531A1 (ja) * | 2011-03-15 | 2012-09-20 | 日野自動車株式会社 | 排ガス浄化装置 |
JP5770585B2 (ja) * | 2011-09-28 | 2015-08-26 | 本田技研工業株式会社 | 内燃機関の空燃比制御装置 |
-
2014
- 2014-01-30 JP JP2014015933A patent/JP6015684B2/ja not_active Expired - Fee Related
-
2015
- 2015-01-09 DE DE102015100203.5A patent/DE102015100203A1/de not_active Withdrawn
- 2015-01-28 FR FR1550642A patent/FR3016920B1/fr not_active Expired - Fee Related
- 2015-01-29 US US14/608,694 patent/US9528410B2/en not_active Expired - Fee Related
- 2015-01-30 CN CN201510047981.XA patent/CN104819038B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20150211400A1 (en) | 2015-07-30 |
US9528410B2 (en) | 2016-12-27 |
CN104819038A (zh) | 2015-08-05 |
DE102015100203A1 (de) | 2015-07-30 |
FR3016920B1 (fr) | 2019-01-25 |
CN104819038B (zh) | 2018-12-11 |
FR3016920A1 (ja) | 2015-07-31 |
JP2015140792A (ja) | 2015-08-03 |
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