WO2008081739A1 - Exhaust gas purifying apparatus for internal combustion engine - Google Patents

Exhaust gas purifying apparatus for internal combustion engine Download PDF

Info

Publication number
WO2008081739A1
WO2008081739A1 PCT/JP2007/074540 JP2007074540W WO2008081739A1 WO 2008081739 A1 WO2008081739 A1 WO 2008081739A1 JP 2007074540 W JP2007074540 W JP 2007074540W WO 2008081739 A1 WO2008081739 A1 WO 2008081739A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion engine
internal combustion
exhaust gas
purifying apparatus
gas purifying
Prior art date
Application number
PCT/JP2007/074540
Other languages
French (fr)
Japanese (ja)
Inventor
Hirohito Hirata
Masaya Ibe
Mayuko Osaki
Masaya Kamada
Original Assignee
Toyota Jidosha Kabushiki Kaisha
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 Toyota Jidosha Kabushiki Kaisha filed Critical Toyota Jidosha Kabushiki Kaisha
Publication of WO2008081739A1 publication Critical patent/WO2008081739A1/en

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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/58—Platinum group metals with alkali- or alkaline earth metals
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/029—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 using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/10—Oxidants
    • B01D2251/104—Ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/28—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a plasma reactor
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/38—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an ozone (O3) generator, e.g. for adding ozone after generation of ozone from air

Landscapes

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

Abstract

An exhaust gas purifying apparatus for internal combustion engine that realizes acceleration of NOx occlusion reaction. The rate of ozone supplied is regulated so that the molar ratio of ozone to nitrogen monoxide (NO) contained in a mixed gas flowing in NOx occlusion reduction catalyst is greater than 1.
PCT/JP2007/074540 2006-12-28 2007-12-20 Exhaust gas purifying apparatus for internal combustion engine WO2008081739A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006355927A JP2008163887A (en) 2006-12-28 2006-12-28 Exhaust emission control device for internal combustion engine
JP2006-355927 2006-12-28

Publications (1)

Publication Number Publication Date
WO2008081739A1 true WO2008081739A1 (en) 2008-07-10

Family

ID=39588423

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/074540 WO2008081739A1 (en) 2006-12-28 2007-12-20 Exhaust gas purifying apparatus for internal combustion engine

Country Status (2)

Country Link
JP (1) JP2008163887A (en)
WO (1) WO2008081739A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5321255B2 (en) * 2009-06-05 2013-10-23 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
JP6515481B2 (en) 2014-10-15 2019-05-22 株式会社デンソー Ozone supply device
JP6459535B2 (en) 2015-01-16 2019-01-30 株式会社デンソー Ozone supply device
JP6358116B2 (en) 2015-02-03 2018-07-18 株式会社デンソー Ozone supply device
JP2017155643A (en) * 2016-03-01 2017-09-07 株式会社Ｓｏｋｅｎ Nox purification device and process of manufacture of nox purification device
JP6569601B2 (en) 2016-05-31 2019-09-04 株式会社デンソー Ozone supply control device
JP6887284B2 (en) 2017-03-30 2021-06-16 日立Astemo株式会社 Exhaust gas purification system
JP2019011691A (en) * 2017-06-29 2019-01-24 株式会社Ｓｏｋｅｎ Exhaust emission control device
KR102125201B1 (en) * 2018-08-24 2020-06-22 강원대학교 산학협력단 Diesel engine exhaust nitrogen oxide storage catalyst system and nitrogen oxide reduction method using the same
WO2020083167A1 (en) * 2018-10-22 2020-04-30 上海必修福企业管理有限公司 Engine exhaust ozone purification system and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0616818B2 (en) * 1990-03-23 1994-03-09 川崎重工業株式会社 Exhaust gas purification method and device
JP2002089246A (en) * 2000-09-20 2002-03-27 Hitachi Ltd Exhaust emission control method and exhaust emission control device for internal combustion engine
JP2005537419A (en) * 2002-08-30 2005-12-08 ルノー・エス・アー・エス Exhaust gas treatment system including a gas ionization system using ionized air injection

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0616818B2 (en) * 1990-03-23 1994-03-09 川崎重工業株式会社 Exhaust gas purification method and device
JP2002089246A (en) * 2000-09-20 2002-03-27 Hitachi Ltd Exhaust emission control method and exhaust emission control device for internal combustion engine
JP2005537419A (en) * 2002-08-30 2005-12-08 ルノー・エス・アー・エス Exhaust gas treatment system including a gas ionization system using ionized air injection

Also Published As

Publication number Publication date
JP2008163887A (en) 2008-07-17

Similar Documents

Publication Publication Date Title
WO2008081739A1 (en) Exhaust gas purifying apparatus for internal combustion engine
MXPA05011839A (en) System and methods for improved emission control of internal combustion engines using pulsed fuel flow.
GB0620883D0 (en) Exhaust system for a lean-burn internal combustion engine
ATE387571T1 (en) SYSTEM AND METHOD FOR IMPROVED EMISSION CONTROL OF INTERNAL COMBUSTION ENGINES
WO2009076574A3 (en) Emission treatment system
MY150086A (en) Diesel particulate filters having ultra-thin catalyzed oxidation coatings
WO2009016781A1 (en) Exhaust purifier
EP1860293A3 (en) Reducing oxides of nitrogen using hydrogen generated from engine fuel and exhaust
EP2000641A3 (en) Exhaust emission control device for internal combustion engine
WO2008036908A3 (en) Treatment systems and methods for internal combustion engine exhaust streams
WO2007078826A3 (en) Exhaust treatment system for diesel engines
ATE552410T1 (en) DEVICE WITH LEAN-RANGE COMBUSTION ENGINE AND EXHAUST SYSTEM THEREFOR
EP2416877A4 (en) Zoned catalysts for diesel applications
EP1094206A3 (en) Exhaust gas purifying system
BR0101550A (en) Process and catalyst for reduction of denitrogen oxides
WO2008126566A1 (en) Apparatus for purifying exhaust gas of internal combustion engine
EP1882832A3 (en) Assembly for reducing nitrogen oxides in exhaust gases
WO2009037795A1 (en) Exhaust purification apparatus
EP1766199A4 (en) De-sulfurization of nox adsorber catalyst in a diesel engine exhaust system
WO2009044495A1 (en) Exhaust purification apparatus
JP2009103020A (en) Exhaust emission control method and exhaust emission control device for internal combustion engine
WO2008081734A1 (en) Exhaust gas purifying apparatus for internal combustion engine
JPH04365920A (en) Exhaust purifying method
EP0935055A3 (en) Device for purifying oxygen rich exhaust gas
WO2009031471A1 (en) Exhaust gas purification system for internal combustion engine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07859897

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07859897

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)