JP4888480B2 - 排気浄化システムの制御装置 - Google Patents
排気浄化システムの制御装置 Download PDFInfo
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- JP4888480B2 JP4888480B2 JP2008318623A JP2008318623A JP4888480B2 JP 4888480 B2 JP4888480 B2 JP 4888480B2 JP 2008318623 A JP2008318623 A JP 2008318623A JP 2008318623 A JP2008318623 A JP 2008318623A JP 4888480 B2 JP4888480 B2 JP 4888480B2
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- 238000000746 purification Methods 0.000 title claims description 28
- 239000003638 chemical reducing agent Substances 0.000 claims description 196
- 239000007787 solid Substances 0.000 claims description 121
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 105
- 239000007789 gas Substances 0.000 claims description 79
- 239000000498 cooling water Substances 0.000 claims description 71
- 239000003054 catalyst Substances 0.000 claims description 64
- 238000010438 heat treatment Methods 0.000 claims description 55
- 239000007788 liquid Substances 0.000 claims description 19
- 238000007254 oxidation reaction Methods 0.000 claims description 14
- 230000009467 reduction Effects 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 10
- 239000013618 particulate matter Substances 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 192
- 229910021529 ammonia Inorganic materials 0.000 description 78
- 238000000034 method Methods 0.000 description 24
- 230000008569 process Effects 0.000 description 22
- 238000006722 reduction reaction Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000003247 decreasing effect Effects 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 239000002826 coolant Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- 238000010531 catalytic reduction reaction Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 238000005979 thermal decomposition reaction Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- -1 and as a result Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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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
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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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
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
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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
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
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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
- F01N2610/06—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
- F01N2610/10—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
- F01N2610/14—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
- 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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- 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
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/16—Outlet manifold
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
以下、本発明に係る排気浄化システムを具体化した実施形態について図面を参照しつつ説明する。本実施形態の排気浄化システムは、選択還元型触媒を用いて排気中のNOxを浄化するものであり、SCRシステムとして構築されている。はじめに、図1を参照してこのシステムの構成について詳述する。図1は、本実施形態に係るSCRシステムの概要を示す構成図である。
4NO+4NH3+O2→4N2+6H2O …(式1)
6NO2+8NH3→7N2+12H2O …(式2)
NO+NO2+2NH3→2N2+3H2O …(式3)
といった反応を促進することにより、排気中のNOxを還元してN2とH2Oとに変化させる。これにより、排気中のNOxが大気中に放出されないようにしている。
次に、本発明の第2の実施形態について、第1の実施形態との相違点を中心に説明する。上記第1の実施形態では、SCR触媒13等が設けられた排気管11に還元剤貯蔵部20を配設する構成としたが、これを変更し、本実施形態では、SCR触媒13等が設けられた排気管11に、還元剤貯蔵部20への排気流量を調節する手段として、同排気管11から分岐するバイパス配管を設ける。そして、そのバイパス配管に還元剤貯蔵部20を配設している。
本発明は上記実施形態の記載内容に限定されず、例えば次のように実施してもよい。
Claims (4)
- 内燃機関の排気通路に設けられた選択還元型触媒と、固体又は液体の還元剤を貯蔵する貯蔵部と、前記貯蔵部に貯蔵された固体又は液体の還元剤を加熱する加熱部と、前記加熱部による加熱により発生した気体の還元剤を前記排気通路において前記選択還元型触媒よりも上流側に供給する還元剤供給手段とを備える排気浄化システムに適用され、
前記加熱部は、前記排気通路の排気熱を熱源とし、
前記排気通路において前記加熱部の熱源とされる排気熱を流通する排気流通部の排気流量を調節する流量調節手段と、
前記流量調節手段による排気流量を制御することにより、前記加熱部から前記貯蔵部への排気熱による熱供給量を制御する熱制御手段と、を備え、
前記貯蔵部に、前記内燃機関の冷却水を流通させるための冷却水通路が設けられており、
前記熱制御手段は、前記加熱部から前記貯蔵部内への熱供給が過剰であることを判定する手段と、前記貯蔵部内への熱供給が過剰であると判定された場合に前記冷却水通路を流通する冷却水により前記貯蔵部内への熱供給量を少なくする手段と、を備えることを特徴とする排気浄化システムの制御装置。 - 前記加熱部は、更に電気エネルギにより発熱する発熱体を熱源として有し、
前記熱制御手段は、前記加熱部から前記貯蔵部内への熱供給が不足することを判定する手段と、前記貯蔵部内への熱供給が不足していると判定された場合に前記発熱体から前記貯蔵部へ熱供給を行う手段と、を備える請求項1に記載の排気浄化システムの制御装置。 - 排気中の粒子状物質を捕集するフィルタと、排気中の窒素酸化物の酸化反応を促進する酸化触媒とが前記排気通路に更に備えられており、
前記加熱部は、前記選択還元型触媒、前記フィルタ及び前記酸化触媒のうちいずれかの下流側における排気熱を熱源とする請求項1又は2に記載の排気浄化システムの制御装置。 - 前記貯蔵部と前記還元剤供給手段との間に、前記加熱部の加熱により発生した前記気体の還元剤を保管する気体保管部が設けられており、
前記熱制御手段は、前記気体保管部内の圧力に基づいて前記加熱部から前記貯蔵部への熱供給量を制御する請求項1乃至3のいずれか一項に記載の排気浄化システムの制御装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2008318623A JP4888480B2 (ja) | 2008-12-15 | 2008-12-15 | 排気浄化システムの制御装置 |
DE102009058300.9A DE102009058300B4 (de) | 2008-12-15 | 2009-12-15 | Abgasreinigungssystem mit Steuervorrichtung |
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JP2008318623A JP4888480B2 (ja) | 2008-12-15 | 2008-12-15 | 排気浄化システムの制御装置 |
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JP2010138883A JP2010138883A (ja) | 2010-06-24 |
JP4888480B2 true JP4888480B2 (ja) | 2012-02-29 |
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DE (1) | DE102009058300B4 (ja) |
Families Citing this family (25)
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JP5287404B2 (ja) * | 2009-03-19 | 2013-09-11 | 株式会社豊田中央研究所 | 還元性ガス発生装置及び触媒還元システム |
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EP2538051B1 (fr) | 2011-06-24 | 2015-04-22 | Aaqius & Aaqius S.A. | Procédé pour déterminer la quantité d'un agent réducteur dans un réservoir |
KR20130024079A (ko) * | 2011-08-30 | 2013-03-08 | 현대자동차주식회사 | 고체 scr 시스템 및 이를 이용한 고체상의 환원제 가열 방법 |
JP5742963B2 (ja) | 2011-11-18 | 2015-07-01 | トヨタ自動車株式会社 | 内燃機関の排気浄化システム |
EP2784279B1 (en) | 2011-11-22 | 2016-09-28 | Toyota Jidosha Kabushiki Kaisha | Exhaust purification device for internal combustion engine |
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US9222389B2 (en) | 2012-02-02 | 2015-12-29 | Cummins Inc. | Systems and methods for controlling reductant delivery to an exhaust stream |
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JP6020105B2 (ja) * | 2012-12-07 | 2016-11-02 | いすゞ自動車株式会社 | ディーゼルエンジンの排気ガス浄化方法及び排気ガス浄化システム |
JP6140470B2 (ja) * | 2013-02-15 | 2017-05-31 | 日立造船株式会社 | 排ガス浄化システム |
JP6160257B2 (ja) * | 2013-05-30 | 2017-07-12 | 株式会社豊田自動織機 | 排気浄化装置 |
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CN104179554B (zh) * | 2014-08-12 | 2016-08-17 | 吉林省众鑫汽车装备有限公司 | 一种固体储氨罐尾气连通控制装置和连通控制方法 |
KR101601496B1 (ko) * | 2014-09-30 | 2016-03-08 | 두산엔진주식회사 | 선택적 촉매 환원 시스템 |
WO2019102564A1 (ja) * | 2017-11-23 | 2019-05-31 | 中央精機株式会社 | 熱音響エンジン |
FR3087835B1 (fr) * | 2018-10-26 | 2021-03-05 | Faurecia Systemes Dechappement | Injecteur pour injecter un agent reducteur gazeux dans le flux de gaz d’echappement d’un moteur a combustion interne |
KR102172440B1 (ko) * | 2018-12-21 | 2020-10-30 | 한국기계연구원 | 질소산화물 정화 시스템용 반응기 및 질소산화물 정화 시스템 |
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JP3600522B2 (ja) * | 2000-11-20 | 2004-12-15 | トヨタ自動車株式会社 | 内燃機関の還元剤供給装置 |
DE102006025257B4 (de) | 2006-05-31 | 2016-09-01 | Volkswagen Ag | Verfahren zum Betreiben eines SCR-Katalysators sowie Programmalgorithmus zur Ausführung des Verfahrens |
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