FI126684B - Pakokaasun jälkikäsittelyjärjestelmä ja menetelmä pakokaasun jälkikäsittelyyn - Google Patents

Pakokaasun jälkikäsittelyjärjestelmä ja menetelmä pakokaasun jälkikäsittelyyn Download PDF

Info

Publication number
FI126684B
FI126684B FI20136008A FI20136008A FI126684B FI 126684 B FI126684 B FI 126684B FI 20136008 A FI20136008 A FI 20136008A FI 20136008 A FI20136008 A FI 20136008A FI 126684 B FI126684 B FI 126684B
Authority
FI
Finland
Prior art keywords
nozzle
exhaust gas
ammonia
carbon dioxide
water vapor
Prior art date
Application number
FI20136008A
Other languages
English (en)
Swedish (sv)
Other versions
FI20136008A (fi
Inventor
Stephan Schlüter
Plamen Toshev
Original Assignee
Man Diesel & Turbo Se
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Man Diesel & Turbo Se filed Critical Man Diesel & Turbo Se
Publication of FI20136008A publication Critical patent/FI20136008A/fi
Application granted granted Critical
Publication of FI126684B publication Critical patent/FI126684B/fi

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • F01N3/108—Auxiliary reduction catalysts
    • 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
    • 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
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • 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
    • 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
    • B01D53/9436—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/24—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means incorporating means for heating the liquid or other fluent material, e.g. electrically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B21/00—Engines characterised by air-storage chambers
    • 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
    • B01D2251/2062—Ammonia
    • 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
    • F01N2610/10—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
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (7)

1. Pakokaasun jälkikäsittelyjärjestelmä polttomoottoria varten, erityisesti raskasöljyllä käytettävää laivadieselmoottoria varten, jossa laitteistossa on SCR-katalysaattori (13), joka käyttää ammoniakkia pelkistysaineena, jolloin pakokaasun virtaussuunnassa katsottuna ennen SCR-katalysaattoria (13) on sijoitettu suutin (15), jolla laimea urealiuos on määrätyssä paineessa ja määrätyssä lämpötilassa hajotettavissa vesihöyryksi, hiilidioksidiksi ja ammoniakiksi siten, että suuttimen (15) kautta tällä höyrystetty ammoniakki on tuotavissa pakokaasuun, tunnettu siitä, että suutin (15) hajottaa laimean urealiuoksen 5 - 200 baarin paineessa ja 100 - 400 °C:n lämpötilassa vesihöyryksi, hiilidioksidiksi ja ammoniakiksi.
2. Patenttivaatimuksen 1 mukainen pakokaasun jälkikäsittely-järjestelmä, tunnettu siitä, että suutin (15) hajottaa laimean urealiuoksen 10 - 100 baarin paineessa ja 200 - 300 °C:n lämpötilassa vesihöyryksi, hiilidioksidiksi ja ammoniakiksi.
3. Patenttivaatimuksen 1 tai 2 mukainen pakokaasun jälkikäsittelyjärjestelmä, tunnettu siitä, että suuttimella (15) laimea urealiuos, joka on tuotavissa suuttimeen (15) määrätyssä paineessa ja määrätyssä lämpötilassa, on hajotettavissa Flash-höyrystyksellä vesihöyryksi, hiilidioksidiksi ja ammoniakiksi ja tuotavissa siinä pakokaasuun.
4. Jonkin patenttivaatimuksen 1 - 3 mukainen pakokaasun jälkikäsittelyjärjestelmä, tunnettu siitä, että suutin (15) on muodostettu Flash-höyrystyssuuttimeksi, jossa on suutinkierrekammio.
5. Jonkin patenttivaatimuksen 1 - 4 mukainen pakokaasun jälkikäsittelyjärjestelmä, tunnettu siitä, että suutin (15) on sijoitettu pakokaasun virtaussuunnassa katsottuna välittömästi ennen SCR-katalysaattoria (13).
6. Menetelmä polttomoottorin, erityisesti raskasöljyllä käytettävän laivadieselmoottorin luovuttaman pakokaasun jälkikäsittelyyn, jolloin pakokaasu johdetaan SCR-katalysaattorin kautta, joka käyttää ammoniakkia pelkistysaineena, jolloin pakokaasun virtaussuunnassa katsottuna ennen SCR-katalysaattoria sijoitettu suutin hajottaa laimean urealiuoksen vesihöyryksi, hiilidioksidiksi ja ammoniakiksi siten, että suuttimen (15) kautta tällä höyrystetty ammoniakki tuodaan pakokaasuun, tunnettu siitä, että suuttimessa (15) laimea urealiuos hajotetaan 10 - 200 baarin paineessa ja 200 - 400 °C:n lämpötilassa vesihöyryksi, hiilidioksidiksi ja ammoniakiksi.
7. Patenttivaatimuksen 6 mukainen menetelmä, tunnettu siitä, että suuttimessa (15) laimea urealiuos hajotetaan 10-100 baarin paineessa ja 200 - 300 °C:n lämpötilassa vesihöyryksi, hiilidioksidiksi ja ammoniakiksi.
FI20136008A 2012-10-11 2013-10-09 Pakokaasun jälkikäsittelyjärjestelmä ja menetelmä pakokaasun jälkikäsittelyyn FI126684B (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012019948.1A DE102012019948A1 (de) 2012-10-11 2012-10-11 Abgasnachbehandlungssystem und Verfahren zur Abgasnachbehandlung

Publications (2)

Publication Number Publication Date
FI20136008A FI20136008A (fi) 2014-04-12
FI126684B true FI126684B (fi) 2017-03-31

Family

ID=50382898

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20136008A FI126684B (fi) 2012-10-11 2013-10-09 Pakokaasun jälkikäsittelyjärjestelmä ja menetelmä pakokaasun jälkikäsittelyyn

Country Status (6)

Country Link
US (1) US8980208B2 (fi)
KR (1) KR101960551B1 (fi)
CN (1) CN103726909B (fi)
CH (1) CH707085B1 (fi)
DE (1) DE102012019948A1 (fi)
FI (1) FI126684B (fi)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6794102B2 (ja) * 2014-10-07 2020-12-02 ヴィンタートゥール ガス アンド ディーゼル アーゲー レシプロ式内燃機関、とりわけ２サイクル大型ディーゼル機関、及び排ガス分配管路、とりわけ複合排ガス分配器
DE102016003742A1 (de) * 2016-03-31 2017-10-05 Man Diesel & Turbo Se Abgasnachbehandlungssystem, Brennkraftmaschine und Verfahren zum Betreiben derselben
WO2018183658A1 (en) * 2017-03-30 2018-10-04 Johnson Matthey Public Limited Company Scr with turbo and asc/doc close-coupled system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038054A1 (de) 1990-11-29 1992-06-04 Man Technologie Gmbh Verfahren und vorrichtung zur selektiven katalytischen no(pfeil abwaerts)x(pfeil abwaerts)-reduktion in sauerstoffhaltigen abgasen
CA2088713C (en) * 1992-02-24 1999-11-16 Hans Thomas Hug Cleaning exhaust gases from combustion installations
DE10342003A1 (de) * 2003-09-05 2005-03-31 Robert Bosch Gmbh Vorrichtung zur Aufbereitung einer Reduktionsmittel-Vorprodukt-Lösung zur Abgasnachbehandlung
DE102004027593A1 (de) 2004-06-05 2005-12-29 Man B & W Diesel Ag Motorenanlage mit Abgasturboaufladung und Betrieb eines SCR-Katalysators
GB0426429D0 (en) * 2004-12-01 2005-01-05 Incro Ltd Nozzle arrangement and dispenser incorporating nozzle arrangement
CN2788910Y (zh) * 2005-05-16 2006-06-21 南京博健科技有限公司 水气射流洗瓶装置
GB0615257D0 (en) * 2006-08-01 2006-09-06 Incro Ltd Nozzle Arrangement And Dispenser Incorporating A Nozzle Arrangement
JP4706686B2 (ja) * 2007-10-22 2011-06-22 株式会社デンソー 排気浄化装置
JP5630024B2 (ja) * 2010-01-25 2014-11-26 いすゞ自動車株式会社 ディーゼルエンジンの排気浄化装置及び排気浄化方法
JP5630025B2 (ja) * 2010-01-25 2014-11-26 いすゞ自動車株式会社 ディーゼルエンジンの排気浄化装置及び排気浄化方法
JP5108064B2 (ja) * 2010-08-05 2012-12-26 本田技研工業株式会社 内燃機関の排気浄化システム
CN102003825B (zh) * 2010-09-21 2013-09-11 北京航空航天大学 一种收缩式阿基米德型线涡流管喷嘴
US8844269B2 (en) * 2012-03-16 2014-09-30 Cummins Inc. Aftertreatment system and method for pre-decomposed reductant solution

Also Published As

Publication number Publication date
CN103726909A (zh) 2014-04-16
CN103726909B (zh) 2018-03-06
FI20136008A (fi) 2014-04-12
CH707085B1 (de) 2018-05-31
DE102012019948A1 (de) 2014-04-17
KR20140047001A (ko) 2014-04-21
US8980208B2 (en) 2015-03-17
US20140105798A1 (en) 2014-04-17
KR101960551B1 (ko) 2019-03-20
CH707085A2 (de) 2014-04-15

Similar Documents

Publication Publication Date Title
US20110131958A1 (en) System and method for mitigating potential for formation of urea deposits in an engine exhaust system during cold ambient conditions
US8109077B2 (en) Dual injector system for diesel emissions control
US8359833B2 (en) Method for introducing a reductant into an exhaust stream
US9057312B2 (en) System and apparatus for reducing reductant deposit formation in exhaust aftertreatment systems
US20070048204A1 (en) Flash injector for NH3-SCR NOx aftertreatment
US8661785B2 (en) System and method for liquid reductant injection
EP2131020A3 (en) Method of dosing reagent
US10196952B2 (en) Vehicle exhaust system having variable exhaust treatment injector system
WO1998028070A1 (en) Method and apparatus for reducing harmful emissions from a lean-burn engine by urea injection scr
US20150377110A1 (en) Angled and compact exhaust gas aftertreatment device
KR102079789B1 (ko) 내연기관
FI126684B (fi) Pakokaasun jälkikäsittelyjärjestelmä ja menetelmä pakokaasun jälkikäsittelyyn
US10392994B2 (en) Reductant injection exhaust manifold
CN109891068A (zh) 包括布置在涡轮上游的还原剂供应系统的多管排气系统
JP5107787B2 (ja) 排気浄化装置
CN105569782A (zh) 一种蒸发式颗粒物捕集器再生系统
Loganathan et al. Investigation on emission characteristics of CI Engine using vegetable oil with SCR technique
JP2010090836A (ja) 尿素水供給装置
US9181832B2 (en) Exhaust aftertreatment system where an activator material is added to the reductant fed to the catalytic converter
US20170002710A1 (en) Anti-clogging device for diesel exhaust fluid supply
US20150361842A1 (en) Exhaust system for a vehicle
US20170087514A1 (en) Uniform flow distribution of a reductant
WO2008043937A3 (fr) Systeme de traitement d'oxydes d'azote avec limitation des rejets d'ammoniac
CN103998733A (zh) 排气系统和选择性催化还原方法
JP2019148250A (ja) 還元剤噴射装置および還元剤インジェクタの制御方法

Legal Events

Date Code Title Description
FG Patent granted

Ref document number: 126684

Country of ref document: FI

Kind code of ref document: B

PC Transfer of assignment of patent

Owner name: MAN ENERGY SOLUTIONS SE

MM Patent lapsed