WO2013114614A1 - 内燃機関の排気浄化装置 - Google Patents
内燃機関の排気浄化装置 Download PDFInfo
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- WO2013114614A1 WO2013114614A1 PCT/JP2012/052501 JP2012052501W WO2013114614A1 WO 2013114614 A1 WO2013114614 A1 WO 2013114614A1 JP 2012052501 W JP2012052501 W JP 2012052501W WO 2013114614 A1 WO2013114614 A1 WO 2013114614A1
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- additive
- temperature
- exhaust
- internal combustion
- combustion engine
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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]
- 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
- 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
- F01N2610/06—Adding substances to exhaust gases the substance being in the gaseous form
-
- 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
- F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
- F01N2610/085—Controlling the air supply
-
- 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
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/12—Adding substances to exhaust gases the substance being in solid form, e.g. pellets or powder
-
- 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
- F01N2900/1808—Pressure
-
- 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
-
- 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
- F01N2900/1824—Properties of the air to be mixed with added substances, e.g. air pressure or air 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (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)
Abstract
Description
内燃機関の排気通路に設けられる排気浄化触媒と、
前記排気浄化触媒に供給されて還元剤または酸化剤として作用する添加剤を固体または液体の状態で貯蔵するタンクと、
前記固体または液体の添加剤を加熱することで気化させる気化装置と、
前記タンクと前記排気浄化触媒よりも上流側の排気通路とを接続し、前記気化装置により気化された気体の添加剤が流通する供給通路と、
を備え、前記気化装置により気化された気体の添加剤を前記排気浄化触媒よりも上流側の排気通路へ供給する内燃機関の排気浄化装置において、
前記気体の添加剤を前記供給通路において他のガスで希釈する希釈装置と、
前記供給通路から前記排気通路へ供給する添加剤の量を、前記希釈装置により希釈された後に前記供給通路において調整する調量装置と、
を備える。
図1は、本実施例に係る内燃機関の排気浄化装置の概略構成を示す図である。図1に示す内燃機関1は、ディーゼルエンジンであってもよく、ガソリンエンジンであってもよい。
本実施例では、還元剤(混合ガスとしてもよい)を加熱するために必要となる熱量(電力量または電力としてもよい)が閾値以上の場合には、閾値未満の場合よりも、噴射弁3から噴射する混合ガスの圧力を低くする。そして、噴射弁3から噴射する混合ガスの圧力を低くするために、混合ガスの温度を実施例1よりも低く設定する。これにより、混合ガスの温度の上昇を抑制して、燃費の悪化を抑制する。その他の装置などは実施例1と同じため、説明を省略する。
2 排気通路
3 噴射弁
4 触媒
5 希釈装置
10 ECU
11 圧力センサ
12 温度センサ
13 アンモニアセンサ
31 供給通路
32 貯蔵タンク
33 副タンク
34 調圧弁
35 混合管
36 加熱装置
37 ヒータ
38 気化装置
39 冷却水通路
40 調整弁
51 ポンプ
52 希釈ガス供給管
Claims (4)
- 内燃機関の排気通路に設けられる排気浄化触媒と、
前記排気浄化触媒に供給されて還元剤または酸化剤として作用する添加剤を固体または液体の状態で貯蔵するタンクと、
前記固体または液体の添加剤を加熱することで気化させる気化装置と、
前記タンクと前記排気浄化触媒よりも上流側の排気通路とを接続し、前記気化装置により気化された気体の添加剤が流通する供給通路と、
を備え、前記気化装置により気化された気体の添加剤を前記排気浄化触媒よりも上流側の排気通路へ供給する内燃機関の排気浄化装置において、
前記気体の添加剤を前記供給通路において他のガスで希釈する希釈装置と、
前記供給通路から前記排気通路へ供給する添加剤の量を、前記希釈装置により希釈された後に前記供給通路において調整する調量装置と、
を備える内燃機関の排気浄化装置。 - 前記調量装置よりも上流側の前記供給通路において、前記希釈装置により希釈された後の添加剤の温度または圧力を調整する調整装置を備える請求項1に記載の内燃機関の排気浄化装置。
- 前記調整装置は、前記希釈装置により希釈された後の添加剤の温度が露点温度よりも高くなるように、前記添加剤の温度または圧力を調整する請求項2に記載の内燃機関の排気浄化装置。
- 前記調整装置は、前記希釈装置により希釈された後の添加剤の温度を調整し、該調整装置は、前記希釈装置により希釈された後の添加剤の温度を露点温度よりも高くするために必要となる熱量が閾値以上の場合には、閾値未満の場合よりも、前記供給通路から排気通路へ供給する添加剤の圧力を低くする請求項2または3に記載の内燃機関の排気浄化装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2012/052501 WO2013114614A1 (ja) | 2012-02-03 | 2012-02-03 | 内燃機関の排気浄化装置 |
JP2013556165A JP5804090B2 (ja) | 2012-02-03 | 2012-02-03 | 内燃機関の排気浄化装置 |
EP12867208.6A EP2811129B8 (en) | 2012-02-03 | 2012-02-03 | Exhaust gas purification apparatus for an internal combustion engine |
Applications Claiming Priority (1)
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PCT/JP2012/052501 WO2013114614A1 (ja) | 2012-02-03 | 2012-02-03 | 内燃機関の排気浄化装置 |
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WO2013114614A1 true WO2013114614A1 (ja) | 2013-08-08 |
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PCT/JP2012/052501 WO2013114614A1 (ja) | 2012-02-03 | 2012-02-03 | 内燃機関の排気浄化装置 |
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EP (1) | EP2811129B8 (ja) |
JP (1) | JP5804090B2 (ja) |
WO (1) | WO2013114614A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014126090A1 (ja) * | 2013-02-15 | 2014-08-21 | 日立造船株式会社 | 排ガス浄化システム |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07127503A (ja) * | 1993-11-05 | 1995-05-16 | Mitsubishi Electric Corp | 内燃機関の排気ガス浄化装置 |
JPH09267025A (ja) * | 1996-03-29 | 1997-10-14 | Kawasaki Heavy Ind Ltd | 排ガス脱硝用還元剤の供給方法 |
JPH11235516A (ja) | 1998-02-24 | 1999-08-31 | Chugoku Electric Power Co Inc:The | 排ガスの脱硝装置 |
JPH11257049A (ja) * | 1998-03-10 | 1999-09-21 | Unisia Jecs Corp | 内燃機関の排気浄化装置 |
JP2010138883A (ja) | 2008-12-15 | 2010-06-24 | Denso Corp | 排気浄化システムの制御装置 |
JP2011132919A (ja) | 2009-12-25 | 2011-07-07 | Nippon Soken Inc | 排気浄化装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2140700T3 (es) * | 1994-09-13 | 2000-03-01 | Siemens Ag | Procedimiento y dispositivo para introducir liquido en un dispositivo de depuracion de gases de escape. |
US6363771B1 (en) * | 1999-11-24 | 2002-04-02 | Caterpillar Inc. | Emissions diagnostic system |
US6834498B2 (en) * | 2002-11-21 | 2004-12-28 | Ford Global Technologies, Llc | Diesel aftertreatment systems |
JP4137838B2 (ja) * | 2004-04-30 | 2008-08-20 | ボッシュ株式会社 | 排気ガス後処理装置用液体供給装置 |
DE102004062603B3 (de) * | 2004-12-24 | 2006-07-27 | Eichenauer Heizelemente Gmbh & Co. Kg | Harnstoff-Dosiersystem für einen Abgasreinigungskatalysator eines Kfz und Ringheizung für ein solches Harnstoff-Dosiersystem |
-
2012
- 2012-02-03 WO PCT/JP2012/052501 patent/WO2013114614A1/ja active Application Filing
- 2012-02-03 JP JP2013556165A patent/JP5804090B2/ja active Active
- 2012-02-03 EP EP12867208.6A patent/EP2811129B8/en not_active Not-in-force
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07127503A (ja) * | 1993-11-05 | 1995-05-16 | Mitsubishi Electric Corp | 内燃機関の排気ガス浄化装置 |
JPH09267025A (ja) * | 1996-03-29 | 1997-10-14 | Kawasaki Heavy Ind Ltd | 排ガス脱硝用還元剤の供給方法 |
JPH11235516A (ja) | 1998-02-24 | 1999-08-31 | Chugoku Electric Power Co Inc:The | 排ガスの脱硝装置 |
JPH11257049A (ja) * | 1998-03-10 | 1999-09-21 | Unisia Jecs Corp | 内燃機関の排気浄化装置 |
JP2010138883A (ja) | 2008-12-15 | 2010-06-24 | Denso Corp | 排気浄化システムの制御装置 |
JP2011132919A (ja) | 2009-12-25 | 2011-07-07 | Nippon Soken Inc | 排気浄化装置 |
Non-Patent Citations (1)
Title |
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See also references of EP2811129A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014126090A1 (ja) * | 2013-02-15 | 2014-08-21 | 日立造船株式会社 | 排ガス浄化システム |
JP2014156821A (ja) * | 2013-02-15 | 2014-08-28 | Hitachi Zosen Corp | 排ガス浄化システム |
Also Published As
Publication number | Publication date |
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EP2811129A1 (en) | 2014-12-10 |
EP2811129A4 (en) | 2015-01-28 |
EP2811129B8 (en) | 2017-09-27 |
JP5804090B2 (ja) | 2015-11-04 |
JPWO2013114614A1 (ja) | 2015-05-11 |
EP2811129B1 (en) | 2017-05-17 |
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