JP2008519932A - 調量システム及び該調量システムの作動法 - Google Patents
調量システム及び該調量システムの作動法 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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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9431—Processes characterised by a specific device
-
- 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
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1466—Means for venting air out of conduits or tanks
-
- 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
- F01N2610/1473—Overflow or return means for the substances, e.g. conduits or valves for the return path
-
- 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
- F01N2610/1493—Purging the reducing agent out of the conduits or nozzle
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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
Abstract
Description
本発明は、請求項1の上位概念に記載の、液体を調量するため、特に内燃機関からの排気の後処理用の尿素水溶液を調量するための調量手段を備えた調量システムであって、液体が、通常運転圧送方向でリザーバタンクから調量手段を介して排気系統へ圧送可能である形式の調量システム、並びに請求項13の上位概念に記載の、液体を調量するため、特に内燃機関からの排気の後処理用の尿素水溶液を調量するための調量システムの作動法であって、液体を圧送方向で調量手段に圧送して排気系統に調量する形式の調量システムの作動法から出発する。
液体を調量するため、特に内燃機関からの排気を後処理するための尿素水溶液を調量するための調量手段を備えた調量システムを提案する。この場合、液体は通常運転圧送方向でリザーバタンクから調量手段を介して排気系統へ圧送可能であり、しかも、調量位置とリザーバタンクとの間の、液体供給される少なくとも1つの領域が、液体の通常運転圧送方向とは逆方向で空にされる。外気温が低い場合の不都合な氷形成による調量手段又は調量システムの損傷、特に装置内の過剰に高い氷圧力の形成が確実に防止される。更に、当該の液体用に熱的な調製ユニットが設けられている場合には、液体を特定の運転状態において調製ユニットの高温ゾーンから遠ざけることができると、不都合な後気化又は液体の1つ又は複数の成分の晶出を防止することができる。
以下に、本発明の実施例を図面につき詳しく説明する。
Claims (19)
- 液体を調量するため、特に内燃機関からの排気の後処理用の尿素水溶液を調量するための調量手段(12,30)を備えた調量システムであって、液体が、通常運転圧送方向(24)でリザーバタンク(10)から調量手段(12,30)を介して排気系統へ圧送可能である形式のものにおいて、
調量位置(33)とリザーバタンク(10)との間の、液体が供給される少なくとも1つの領域(14)が、液体の通常運転圧送方向(24)とは逆方向で空にされることを特徴とする、調量システム。 - 液体が、通常運転圧送方向(24)で調量弁(12)を介して直接に排気系統に圧送可能であり、液体を供給され且つ排出されるべき領域(14)が、圧送ポンプ(15)と調量弁(12)との間に配置されている、請求項1記載の調量システム。
- 圧送ポンプ(15)が逆転可能な圧送方向を備えて形成されている、請求項2記載の調量システム。
- 圧送方向を逆転させるために少なくとも1つの弁が設けられている、請求項2又は3記載の調量システム。
- 通常運転圧送方向(24)で見て調量弁(12)の上流側に通気弁(25)が設けられており、該通気弁が、調量弁(12)の排出時に開放可能である、請求項1から4までのいずれか1項記載の調量システム。
- 調量弁(12)がパルス幅変調式で作動可能である、請求項1から5までのいずれか1項記載の調量システム。
- 液体を排気系統に圧送可能な調量ポンプ(30)が設けられている、請求項1から6までのいずれか1項記載の調量システム。
- 調量ポンプ(30)が蠕動ポンプとして形成されている、請求項7記載の調量システム。
- 調量ポンプ(30)が逆転可能な回転方向を有している、請求項7又は8記載の調量システム。
- 調量ポンプ(30)の圧送方向を逆転させるために少なくとも1つの弁が設けられている、請求項7又は8記載の調量システム。
- 調量ポンプ(30)と排気系統との間に、液体調製用の調製ユニット(31)が配置されている、請求項7から10までのいずれか1項記載の調量システム。
- 空にされるべき領域(14)が、調量ポンプ(30)と排気系統との間に配置されている、請求項7から11までのいずれか1項記載の調量システム。
- 液体を調量するため、特に内燃機関からの排気の後処理用の尿素水溶液を調量するための調量システムの作動法であって、液体を圧送方向(24)で調量手段(12,30)に圧送して排気系統に調量する形式のものにおいて、
少なくとも調量位置(33)とリザーバタンク(10)との間の領域(14)を、一時的に通常運転圧送方向(24)とは逆方向で空にすることを特徴とする、調量システムの作動法。 - 調量弁(12)を空にするために、圧送ポンプ(15)の回転方向を逆転させるか、又は適当な弁により圧送方向を逆転させる、請求項13記載の作動法。
- 圧送ポンプ(15)の圧送方向を、回転方向逆転及び/又は弁の接続により逆転させる、請求項14記載の作動法。
- 排出するためには調量弁(12)を閉じる、請求項14又は15記載の作動法。
- 排出中に、圧送ポンプ(15)と調量弁(12)との間に配置された通気弁(25)を介して、通常運転圧送方向(24)とは逆方向で気体を吸い込む、請求項13から16までのいずれか1項記載の作動法。
- 排出後に調量弁(12)を排気系統に対して開放する、請求項13から17までのいずれか1項記載の作動法。
- 排出するためには調量ポンプ(30)の圧送方向を逆転させる、請求項13から18までのいずれか1項記載の作動法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004054238A DE102004054238A1 (de) | 2004-11-10 | 2004-11-10 | Dosiersystem sowie Verfahren zum Betreiben eines Dosiersystems |
PCT/EP2005/054606 WO2006051017A1 (de) | 2004-11-10 | 2005-09-16 | Dosiersystem sowie verfahren zum betreiben eines dosiersystems |
Publications (2)
Publication Number | Publication Date |
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JP2008519932A true JP2008519932A (ja) | 2008-06-12 |
JP4571982B2 JP4571982B2 (ja) | 2010-10-27 |
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Application Number | Title | Priority Date | Filing Date |
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JP2007540618A Active JP4571982B2 (ja) | 2004-11-10 | 2005-09-16 | 調量システム及び該調量システムの作動法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7654080B2 (ja) |
EP (1) | EP1812144B1 (ja) |
JP (1) | JP4571982B2 (ja) |
KR (1) | KR101080557B1 (ja) |
CN (1) | CN101084053B (ja) |
AT (1) | ATE421903T1 (ja) |
DE (2) | DE102004054238A1 (ja) |
WO (1) | WO2006051017A1 (ja) |
Cited By (2)
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WO2010030034A1 (ja) * | 2008-09-10 | 2010-03-18 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE102010016654A1 (de) | 2009-04-28 | 2010-11-04 | Denso Corporation, Kariya-City | Abgasreinigungssystem eines Verbrennungsmotors |
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Also Published As
Publication number | Publication date |
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US20070283685A1 (en) | 2007-12-13 |
DE102004054238A1 (de) | 2006-05-11 |
DE502005006575D1 (de) | 2009-03-19 |
US7654080B2 (en) | 2010-02-02 |
EP1812144A1 (de) | 2007-08-01 |
JP4571982B2 (ja) | 2010-10-27 |
EP1812144B1 (de) | 2009-01-28 |
WO2006051017A1 (de) | 2006-05-18 |
KR20070084091A (ko) | 2007-08-24 |
KR101080557B1 (ko) | 2011-11-04 |
CN101084053A (zh) | 2007-12-05 |
ATE421903T1 (de) | 2009-02-15 |
CN101084053B (zh) | 2012-07-18 |
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