JP5161207B2 - ディーゼルエンジンの排出ガスを低減するための方法及び装置 - Google Patents
ディーゼルエンジンの排出ガスを低減するための方法及び装置 Download PDFInfo
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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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- 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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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
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- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
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- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/07—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas flow rate or velocity meter or sensor, intake flow meters only when exclusively used to determine exhaust gas parameters
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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
- F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
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- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
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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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
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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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
- F01N2610/146—Control thereof, e.g. control of injectors or injection valves
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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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/04—Methods of control or diagnosing
- F01N2900/0408—Methods of control or diagnosing using a feed-back loop
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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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/04—Methods of control or diagnosing
- F01N2900/0411—Methods of control or diagnosing using a feed-forward control
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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
- 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
- F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the 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
- 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
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- 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
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- 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
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Description
Claims (24)
- ディーゼルエンジンからの排出ガスを低減するための方法であって、
0.1524mm(0.006インチ)以下の直径を有する開口部を1つ有するインジェクタを前記ディーゼルエンジンの排気口に設ける工程と、
827kPa(120psi)〜414kPa(60psi)の入口圧力で前記インジェクタに試薬を供給する工程と、
10Hz〜1Hzの周波数及び1%以上のオン時間で前記インジェクタをオン/オフ動作させる工程と、
前記開口部を介して前記試薬を前記排気口に所定の噴射流量で噴射する工程と、
を含み、
前記入口圧力、前記周波数、前記オン時間の少なくとも2つを変化させることによって少なくとも31:1の最小噴射流量に対する最大噴射流量のターンダウン比を達成する方法。 - 請求項1において、前記噴射流量が0.2g/分〜25g/分である方法。
- 請求項1において、前記試薬が、尿素溶液及び炭化水素溶液の少なくとも1つを含む方法。
- 請求項1において、前記入口圧力、前記周波数、前記オン時間の前記少なくとも2つが前記周波数と前記オン時間である方法。
- 請求項4において、552kPa(80psi)の一定の入口圧力を維持する工程をさらに含む方法。
- 請求項1において、前記直径が0.127mm(0.005インチ)以下であり、前記入口圧力、前記周波数、前記オン時間のそれぞれを変化させることによって100:1のターンダウン比を達成する方法。
- 請求項1において、40μm〜100μmのSMDを有する液滴として前記試薬が噴射されるまで前記入口圧力を調節する工程をさらに含む方法。
- 請求項1において、前記試薬を試薬タンクから前記インジェクタに供給し、前記試薬の少なくとも一部を前記試薬タンクに再循環させる工程をさらに含む方法。
- 請求項8において、再循環流量が前記噴射流量よりも多い方法。
- 請求項1において、最低噴射流量が0.2g/分であり、最大噴射流量が25g/分である方法。
- ディーゼルエンジンからの排出ガスを低減するための方法であって、
0.889mm(0.035インチ)未満の直径を有する開口部を1つ有する試薬インジェクタを前記ディーゼルエンジンの排気口と連通して設ける工程と、
所定の入口圧力で前記インジェクタに試薬を供給する工程と、
所定の周波数で前記インジェクタをオン/オフ動作させ、所定の噴射流量で前記試薬を前記開口部を介して前記排気口に噴射する工程と、
前記インジェクタのオン時間を85%〜5%の間で調節する工程と、
前記入口圧力を第1の入口圧力と第2の入口圧力との間で調節する工程と、
を含み、
前記オン時間を調節する工程と前記入口圧力を調節する工程とによって10:1を超える最小噴射流量に対する最大噴射流量のターンダウン比を達成する方法。 - 請求項11において、前記直径が0.762mm(0.03インチ)以下であり、前記最大噴射流量が800g/分である方法。
- 請求項11において、前記第1の入口圧力が827kPa(120psi)であり、前記第2の入口圧力が552kPa(80psi)である方法。
- 請求項13において、前記開口部の直径が0.127mm(0.005インチ)以下であり、前記ターンダウン比が少なくとも100:1である方法。
- 請求項11において、前記第1の入口圧力が827kPa(120psi)であり、前記第2の入口圧力が414kPa(60psi)である方法。
- 請求項11において、前記第1の入口圧力が965kPa(140psi)であり、前記第2の入口圧力が276kPa(40psi)である方法。
- 請求項11において、前記ターンダウン比が少なくとも43:1である方法。
- ディーゼルエンジンからの排出ガスを低減するための方法であって、
0.1524mm(0.006インチ)以下の直径を有する開口部を1つ有する試薬インジェクタを前記ディーゼルエンジンの排気口に設ける工程と、
552kPa(80psi)以下の入口圧力で前記インジェクタに試薬を供給する工程と、
1.5Hz以下の周波数で前記インジェクタをオン/オフ動作させる工程と、
を含み、
前記インジェクタをオン/オフ動作させる工程によって3.3g/分以下の噴射流量で前記試薬を前記開口部を介して前記排気口に噴射し、前記インジェクタが10.5%未満のオン時間を有する方法。 - 請求項18において、前記インジェクタが5%未満のオン時間を有し、前記インジェクタをオン/オフ動作させる工程によって1.5g/分以下の噴射流量で前記試薬を前記開口部を介して前記排気口に噴射する方法。
- 請求項18において、前記インジェクタが1%未満のオン時間を有し、前記インジェクタをオン/オフ動作させる工程によって0.8g/分以下の噴射流量で前記試薬を前記開口部を介して前記排気口に噴射する方法。
- 請求項18において、前記周波数が1.0Hz以下である方法。
- 請求項18において、前記噴射流量が0.2g/分〜3g/分である方法。
- 請求項18において、前記オン時間が1%以下である方法。
- 請求項18において、前記試薬が、尿素溶液及び炭化水素溶液の少なくとも1つを含む方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US80991806P | 2006-05-31 | 2006-05-31 | |
US60/809,918 | 2006-05-31 | ||
PCT/US2007/012556 WO2007142899A2 (en) | 2006-05-31 | 2007-05-29 | Method and apparatus for reducing emissions in diesel engines |
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JP2009539026A JP2009539026A (ja) | 2009-11-12 |
JP5161207B2 true JP5161207B2 (ja) | 2013-03-13 |
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JP2009513217A Expired - Fee Related JP5161207B2 (ja) | 2006-05-31 | 2007-05-29 | ディーゼルエンジンの排出ガスを低減するための方法及び装置 |
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US (1) | US7861520B2 (ja) |
EP (3) | EP2032809B1 (ja) |
JP (1) | JP5161207B2 (ja) |
KR (1) | KR101460967B1 (ja) |
CN (1) | CN101454543B (ja) |
BR (1) | BRPI0711722A2 (ja) |
CA (1) | CA2655129C (ja) |
MX (1) | MX2008015177A (ja) |
WO (1) | WO2007142899A2 (ja) |
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2007
- 2007-05-29 KR KR1020087028862A patent/KR101460967B1/ko active IP Right Grant
- 2007-05-29 BR BRPI0711722-1A patent/BRPI0711722A2/pt not_active IP Right Cessation
- 2007-05-29 WO PCT/US2007/012556 patent/WO2007142899A2/en active Application Filing
- 2007-05-29 US US11/754,872 patent/US7861520B2/en not_active Expired - Fee Related
- 2007-05-29 CA CA2655129A patent/CA2655129C/en not_active Expired - Fee Related
- 2007-05-29 MX MX2008015177A patent/MX2008015177A/es active IP Right Grant
- 2007-05-29 EP EP07777292.9A patent/EP2032809B1/en not_active Revoked
- 2007-05-29 EP EP13004119.7A patent/EP2700792B1/en not_active Expired - Fee Related
- 2007-05-29 EP EP13004120.5A patent/EP2826967A1/en not_active Withdrawn
- 2007-05-29 CN CN2007800198167A patent/CN101454543B/zh not_active Expired - Fee Related
- 2007-05-29 JP JP2009513217A patent/JP5161207B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2009539026A (ja) | 2009-11-12 |
US20080022654A1 (en) | 2008-01-31 |
US7861520B2 (en) | 2011-01-04 |
WO2007142899A3 (en) | 2008-12-04 |
MX2008015177A (es) | 2009-05-11 |
EP2032809A2 (en) | 2009-03-11 |
KR20090023582A (ko) | 2009-03-05 |
EP2032809B1 (en) | 2013-08-21 |
EP2826967A1 (en) | 2015-01-21 |
KR101460967B1 (ko) | 2014-11-13 |
WO2007142899A2 (en) | 2007-12-13 |
CN101454543B (zh) | 2011-05-04 |
EP2700792A1 (en) | 2014-02-26 |
BRPI0711722A2 (pt) | 2011-11-29 |
CN101454543A (zh) | 2009-06-10 |
CA2655129A1 (en) | 2007-12-13 |
EP2700792B1 (en) | 2016-11-16 |
CA2655129C (en) | 2012-12-11 |
EP2032809A4 (en) | 2010-12-08 |
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