JP2009539026A - 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
- F01N3/18—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
- 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
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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
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- 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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- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- F01N2610/03—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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- 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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- F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
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- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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- 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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- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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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
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Abstract
Description
Claims (28)
- 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、
約0.006インチ以下の直径を有する開口部を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、
約120psi〜約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、
約10Hz〜約1Hzの周波数及び約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約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、前記噴射流量が約0.2g/分〜約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、約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0.005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、約40μm〜約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、前記試薬を約2.5ガロン/時〜約10ガロン/時の流量で供給する方法。
- 請求項10において、最低噴射流量が約0.2g/分であり、最大噴射流量が約25g/分である方法。
- 請求項1において、前記試薬を約7ガロン/時〜約25ガロン/時の流量で供給する方法。
- 請求項12において、前記最低噴射流量が約20g/分であり、前記最大噴射流量が約600g/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、
約0.035インチ未満の直径を有する開口部を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約85%〜約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14において、前記直径が約0.03インチ以下であり、前記最大噴射流量が約800g/分である方法。
- 請求項14において、前記周波数を約10Hzの第1の周波数と約1.5Hzの第2の周波数との間で調節し、前記オン時間を約1%以下に調節して少なくとも約50:1のターンダウン比を達成する工程をさらに含む方法。
- 請求項16において、前記第1の入口圧力が約120psiであり、前記第2の入口圧力が約80psiである方法。
- 請求項17において、前記開口部の直径が約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約100:1である方法。
- 請求項14において、前記第1の入口圧力が約120psiであり、前記第2の入口圧力が約60psiである方法。
- 請求項14において、前記第1の入口圧力が約140psiであり、前記第2の入口圧力が約40psiである方法。
- 請求項14において、前記ターンダウン比が少なくとも約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、
約0.006インチ以下の直径を有する開口部を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、
約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、
約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約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22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約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22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約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22において、前記周波数が1.0Hz以下である方法。
- 請求項22において、前記噴射流量が約0.2g/分〜約3g/分である方法。
- 請求項22において、前記オン時間が約1%以下である方法。
- 請求項22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)
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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 true JP2009539026A (ja) | 2009-11-12 |
JP5161207B2 JP5161207B2 (ja) | 2013-03-13 |
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US (1) | US7861520B2 (ja) |
EP (3) | EP2826967A1 (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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JP2010504459A (ja) * | 2006-09-20 | 2010-02-12 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 反応剤配量弁の作動方法および方法を実行するための装置 |
WO2011125287A1 (ja) * | 2010-04-07 | 2011-10-13 | 日野自動車株式会社 | 後処理バーナシステムの燃料凍結防止方法及び装置 |
JP2013513060A (ja) * | 2009-12-04 | 2013-04-18 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド | NOx除去噴射器点火制御回路 |
JP2013519822A (ja) * | 2010-02-10 | 2013-05-30 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド | 流れの変動と戻り流量とが低減した圧力渦流インジェクター |
JP2014517219A (ja) * | 2011-06-21 | 2014-07-17 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド | 流れの変動と戻り流量とを低減させた圧力渦流インジェクタ |
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Cited By (13)
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JP2010504459A (ja) * | 2006-09-20 | 2010-02-12 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 反応剤配量弁の作動方法および方法を実行するための装置 |
JP2013513060A (ja) * | 2009-12-04 | 2013-04-18 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド | NOx除去噴射器点火制御回路 |
US8973895B2 (en) | 2010-02-10 | 2015-03-10 | Tenneco Automotive Operating Company Inc. | Electromagnetically controlled injector having flux bridge and flux break |
JP2013519822A (ja) * | 2010-02-10 | 2013-05-30 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド | 流れの変動と戻り流量とが低減した圧力渦流インジェクター |
US8998114B2 (en) | 2010-02-10 | 2015-04-07 | Tenneco Automotive Operating Company, Inc. | Pressure swirl flow injector with reduced flow variability and return flow |
US9683472B2 (en) | 2010-02-10 | 2017-06-20 | Tenneco Automotive Operating Company Inc. | Electromagnetically controlled injector having flux bridge and flux break |
US8881503B2 (en) | 2010-04-07 | 2014-11-11 | Hino Motors, Ltd. | Method and device for preventing fuel freezing in a postprocessing burner system |
WO2011125287A1 (ja) * | 2010-04-07 | 2011-10-13 | 日野自動車株式会社 | 後処理バーナシステムの燃料凍結防止方法及び装置 |
JP2014517219A (ja) * | 2011-06-21 | 2014-07-17 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッド | 流れの変動と戻り流量とを低減させた圧力渦流インジェクタ |
JP2015517056A (ja) * | 2012-05-07 | 2015-06-18 | テネコ オートモティブ オペレーティング カンパニー インコーポレイテッドTenneco Automotive Operating Company Inc. | 反応剤インジェクター |
US10465582B2 (en) | 2012-05-07 | 2019-11-05 | Tenneco Automotive Operating Company Inc. | Reagent injector |
US9759113B2 (en) | 2012-05-10 | 2017-09-12 | Tenneco Automotive Operating Company Inc. | Coaxial flow injector |
US10704444B2 (en) | 2018-08-21 | 2020-07-07 | Tenneco Automotive Operating Company Inc. | Injector fluid filter with upper and lower lip seal |
Also Published As
Publication number | Publication date |
---|---|
EP2032809B1 (en) | 2013-08-21 |
US20080022654A1 (en) | 2008-01-31 |
CN101454543A (zh) | 2009-06-10 |
CA2655129A1 (en) | 2007-12-13 |
CN101454543B (zh) | 2011-05-04 |
CA2655129C (en) | 2012-12-11 |
US7861520B2 (en) | 2011-01-04 |
EP2032809A4 (en) | 2010-12-08 |
EP2700792A1 (en) | 2014-02-26 |
WO2007142899A2 (en) | 2007-12-13 |
EP2826967A1 (en) | 2015-01-21 |
KR20090023582A (ko) | 2009-03-05 |
BRPI0711722A2 (pt) | 2011-11-29 |
WO2007142899A3 (en) | 2008-12-04 |
EP2700792B1 (en) | 2016-11-16 |
JP5161207B2 (ja) | 2013-03-13 |
KR101460967B1 (ko) | 2014-11-13 |
MX2008015177A (es) | 2009-05-11 |
EP2032809A2 (en) | 2009-03-11 |
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