GB2473999A - Exhaust system for a lean burn ic engine - Google Patents

Exhaust system for a lean burn ic engine Download PDF

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Publication number
GB2473999A
GB2473999A GB1101385A GB201101385A GB2473999A GB 2473999 A GB2473999 A GB 2473999A GB 1101385 A GB1101385 A GB 1101385A GB 201101385 A GB201101385 A GB 201101385A GB 2473999 A GB2473999 A GB 2473999A
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GB
United Kingdom
Prior art keywords
catalyst
exhaust system
engine
lean burn
substrate monolith
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB1101385A
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GB201101385D0 (en
Inventor
Guy Richard Chandler
Neil Robert Collins
Paul Richard Phillips
Daniel Swallow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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Filing date
Publication date
Application filed by Johnson Matthey PLC filed Critical Johnson Matthey PLC
Publication of GB201101385D0 publication Critical patent/GB201101385D0/en
Publication of GB2473999A publication Critical patent/GB2473999A/en
Withdrawn legal-status Critical Current

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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
    • F01N3/02—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
    • F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • 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
    • 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
    • F01N3/02—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
    • F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • 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
    • 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
    • F01N3/0231—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 using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filters
    • 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
    • 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
    • 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]
    • F01N3/2073—Selective catalytic reduction [SCR] with means for generating a reducing substance from the exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/106—Gold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/202—Alkali metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2063—Lanthanum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20723—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20738—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20761—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2092—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/50—Zeolites
    • 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
    • F01N2240/18—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 adsorber or absorber
    • 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
    • F01N2240/25—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 ammonia generator
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/14—Combinations of different methods of purification absorption or adsorption, and filtering
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • F01N2510/068—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings
    • F01N2510/0682—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings having a discontinuous, uneven or partially overlapping coating of catalytic material, e.g. higher amount of material upstream than downstream or vice versa
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/10—Carbon or carbon oxides
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/12—Hydrocarbons
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/18—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
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

An exhaust system(10) for a lean-burn internal combustion engine (12) comprises a first substrate monolith (16) comprising a catalyst for oxidising nitric oxide (NO) comprising a catalytic oxidation component followed downstream by a second substrate monolith (18) which is a wall-flow filter having inlet channels and outlet channels, wherein the fillet channels comprise a NO x absorber catalyst (20) and the outlet channels comprise a catalyst for selective catalytic reduction (22) of nitrogen oxides with nitrogenous reductant.
GB1101385A 2008-07-09 2009-07-06 Exhaust system for a lean burn ic engine Withdrawn GB2473999A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0812544.5A GB0812544D0 (en) 2008-07-09 2008-07-09 Exhaust system for a lean burn IC engine
PCT/GB2009/050794 WO2010004320A2 (en) 2008-07-09 2009-07-06 Exhaust system for a lean burn ic engine

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GB201101385D0 GB201101385D0 (en) 2011-03-09
GB2473999A true GB2473999A (en) 2011-03-30

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GBGB0812544.5A Ceased GB0812544D0 (en) 2008-07-09 2008-07-09 Exhaust system for a lean burn IC engine
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EP (2) EP2650496B1 (en)
JP (2) JP5607042B2 (en)
KR (1) KR101660026B1 (en)
CN (1) CN102159807B (en)
BR (1) BRPI0915553A2 (en)
GB (2) GB0812544D0 (en)
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WO (1) WO2010004320A2 (en)

Families Citing this family (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8512657B2 (en) 2009-02-26 2013-08-20 Johnson Matthey Public Limited Company Method and system using a filter for treating exhaust gas having particulate matter
FR2954184B1 (en) * 2009-12-22 2014-05-16 Peugeot Citroen Automobiles Sa MONOLITH OF POST-TREATMENT OF EXHAUST GASES OF A COMBUSTION ENGINE FOR PARTICLE FILTRATION AND REDUCTION OF NITROGEN OXIDES
US8293182B2 (en) * 2010-05-05 2012-10-23 Basf Corporation Integrated SCR and AMOx catalyst systems
FR2970293B1 (en) * 2011-01-11 2015-05-29 Peugeot Citroen Automobiles Sa PARTICLE FILTER
FR2970294B1 (en) * 2011-01-11 2012-12-28 Peugeot Citroen Automobiles Sa EXHAUST LINE FOR AN INTERNAL COMBUSTION ENGINE
US8101146B2 (en) 2011-04-08 2012-01-24 Johnson Matthey Public Limited Company Catalysts for the reduction of ammonia emission from rich-burn exhaust
NL2006993C2 (en) * 2011-05-02 2012-11-05 Daf Trucks Nv EXHAUST GAS SYSTEM FOR A DIESEL ENGINE.
JP2012237282A (en) * 2011-05-13 2012-12-06 Toyota Industries Corp Catalyst device
DE102011050788A1 (en) * 2011-06-01 2012-12-06 Ford Global Technologies, Llc. Exhaust gas aftertreatment device and method for a gasoline engine
BR112014000711A2 (en) * 2011-07-13 2017-02-14 Haldor Topsoe As catalyzed particulate filter and methods for coating a particulate filter
GB2506776B (en) 2011-08-03 2016-01-06 Johnson Matthey Plc Extruded honeycomb catalyst
WO2013121520A1 (en) * 2012-02-14 2013-08-22 トヨタ自動車株式会社 Exhaust purification device for internal combustion engine
WO2013121636A1 (en) * 2012-02-15 2013-08-22 トヨタ自動車株式会社 Catalyst system for exhaust gas purification utilizing base metals, and controlling method therefor
GB201207313D0 (en) 2012-04-24 2012-06-13 Johnson Matthey Plc Filter substrate comprising three-way catalyst
EP2657474A1 (en) * 2012-04-26 2013-10-30 Bernhard Kahlert Coated particulate filter, catalyst and device with same
US8997461B2 (en) 2012-05-21 2015-04-07 Cummins Emission Solutions Inc. Aftertreatment system having two SCR catalysts
GB201221025D0 (en) * 2012-11-22 2013-01-09 Johnson Matthey Plc Zoned catalysed substrate monolith
JP5997025B2 (en) * 2012-12-03 2016-09-21 日本碍子株式会社 Honeycomb catalyst body
JP5997026B2 (en) * 2012-12-03 2016-09-21 日本碍子株式会社 Honeycomb catalyst body
GB2512648B (en) 2013-04-05 2018-06-20 Johnson Matthey Plc Filter substrate comprising three-way catalyst
GB2513364B (en) * 2013-04-24 2019-06-19 Johnson Matthey Plc Positive ignition engine and exhaust system comprising catalysed zone-coated filter substrate
GB2517238B (en) * 2013-04-24 2020-04-01 Johnson Matthey Plc Filter substrate comprising zone-coated catalyst washcoat
US9677439B2 (en) 2014-01-20 2017-06-13 Cummins Inc. Systems and methods to mitigate NOx and HC emissions
US9512761B2 (en) 2014-02-28 2016-12-06 Cummins Inc. Systems and methods for NOx reduction and aftertreatment control using passive NOx adsorption
KR101890840B1 (en) 2014-02-28 2018-08-22 스카니아 씨브이 악티에볼라그 Exhaust treatment system and method for treatment of an exhaust stream
US9567888B2 (en) 2014-03-27 2017-02-14 Cummins Inc. Systems and methods to reduce reductant consumption in exhaust aftertreament systems
US9903291B2 (en) * 2014-09-23 2018-02-27 Ford Global Technologies, Llc Method of controlling NOx by PNA
US10125649B2 (en) * 2014-10-16 2018-11-13 Cataler Corporation Exhaust gas purification catalyst
JP2016079912A (en) * 2014-10-17 2016-05-16 マツダ株式会社 Exhaust emission control system and emission control method
JP6264261B2 (en) * 2014-11-05 2018-01-24 マツダ株式会社 Exhaust gas purification system
RU2017131548A (en) * 2015-02-09 2019-03-11 Басф Корпорейшн DIESEL OXIDATION CATALYST
JP6472677B2 (en) * 2015-02-17 2019-02-20 株式会社キャタラー Exhaust gas purification catalyst
US10159934B2 (en) * 2015-02-17 2018-12-25 Cataler Corporation Exhaust gas purification catalyst
EP3254759B1 (en) 2015-02-17 2019-04-03 Cataler Corporation Exhaust gas purification catalyst
MY193820A (en) * 2015-02-27 2022-10-27 Basf Corp Exhaust gas treatment system
KR102609702B1 (en) * 2015-03-03 2023-12-06 바스프 코포레이션 NOx adsorbent catalyst, method and system
US9657626B2 (en) * 2015-05-18 2017-05-23 Ford Global Technologies, Llc Emissions reduction system
JP2018521258A (en) 2015-05-19 2018-08-02 ハルドール・トプサー・アクチエゼルスカベット Method, multifunction filter and system for removing particulate matter and harmful compounds from engine exhaust
JP6406134B2 (en) * 2015-06-05 2018-10-17 株式会社デンソー Reducing agent injection system
SE539803C2 (en) 2015-06-05 2017-12-05 Scania Cv Ab A method and a system for determining a composition of a gasmix in a vehicle
RU2018101292A (en) * 2015-06-16 2019-07-16 Басф Се SCR-CATALIZED SHUTTER FILTER WITH INTEGRATED CATALYST-TRAPER OF NITROGEN OXIDES IN CONDITIONS OF A DEPLETED MIXTURE FOR APPLICATION IN PASSIVE SELECTIVE CATALYTIC RESTORATION
US9937489B2 (en) * 2015-06-18 2018-04-10 Johnson Matthey Public Limited Company Exhaust system without a DOC having an ASC acting as a DOC in a system with an SCR catalyst before the ASC
DE102016110999A1 (en) * 2015-06-18 2016-12-22 Johnson Matthey Public Limited Company Zoned exhaust system
GB2543337A (en) 2015-10-15 2017-04-19 Johnson Matthey Plc Exhaust System
US9739190B2 (en) * 2015-11-12 2017-08-22 GM Global Technology Operations LLC Method and apparatus to control reductant injection into an exhaust gas feedstream
DE102015225579A1 (en) * 2015-12-17 2017-06-22 Umicore Ag & Co. Kg Method for preventing the contamination of an SCR catalyst with platinum
GB2546745A (en) 2016-01-26 2017-08-02 Johnson Matthey Plc Exhaust system
HUE055325T2 (en) 2016-04-11 2021-11-29 Johnson Matthey Plc Method of coating a substrate with a particle stabilized foam
WO2017187419A1 (en) 2016-04-29 2017-11-02 Johnson Matthey Public Limited Company Exhaust system
EP3448548B1 (en) * 2016-04-29 2021-06-30 Johnson Matthey Public Limited Company Exhaust system
KR101806180B1 (en) 2016-06-20 2017-12-07 현대자동차 주식회사 Apparatus of purifying exhaust gas
US10138779B2 (en) 2016-11-14 2018-11-27 GM Global Technology Operations LLC Selective catalytic reduction filter devices having NOx storage capabilities
KR101846918B1 (en) * 2016-11-16 2018-04-09 현대자동차 주식회사 Cu/LTA CATALYST AND EXHAUST GAS SYSTEM, AND MANUFACTURING METHOD OF Cu/LTA CATALYST
GB2562160B (en) * 2017-03-20 2021-06-23 Johnson Matthey Plc Catalytic wall-flow filter with an ammonia slip catalyst
KR102497884B1 (en) 2017-03-23 2023-02-10 우미코레 아게 운트 코 카게 Catalytically active particulate filter
JP7130622B2 (en) * 2017-03-27 2022-09-05 株式会社キャタラー Exhaust gas purification catalyst
JP6407349B1 (en) * 2017-05-11 2018-10-17 株式会社キャタラー Exhaust gas purification catalyst device
WO2019012874A1 (en) * 2017-07-11 2019-01-17 株式会社キャタラー Catalyst for exhaust gas purification
EP3501648B1 (en) 2017-12-19 2023-10-04 Umicore Ag & Co. Kg Catalytically active particle filter
EP3501646A1 (en) * 2017-12-19 2019-06-26 Umicore Ag & Co. Kg Catalytically active particle filter
EP3505246B1 (en) 2017-12-19 2019-10-23 Umicore Ag & Co. Kg Catalytically active particle filter
JP7097210B2 (en) * 2018-03-30 2022-07-07 日本碍子株式会社 Honeycomb filter
EP3778020A4 (en) * 2018-03-30 2021-07-14 Mitsui Mining & Smelting Co., Ltd. Exhaust gas purification catalyst
JP7120959B2 (en) * 2019-04-22 2022-08-17 トヨタ自動車株式会社 Structure
US11187127B2 (en) 2019-06-28 2021-11-30 Deere & Company Exhaust gas treatment system and method with four-way catalyzed filter element
JP2021154184A (en) * 2020-03-25 2021-10-07 トヨタ自動車株式会社 Exhaust emission control device
EP3936221A1 (en) 2020-07-07 2022-01-12 UMICORE AG & Co. KG Catalysed particulate filter with enhanced passive soot functionality
IT202100005366A1 (en) * 2021-03-08 2022-09-08 Fpt Ind Spa POLLUTANT ABATEMENT DEVICE AND POLLUTANT ABATEMENT SYSTEM FOR COMPRESSION IGNITION ENGINES

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6696031B1 (en) * 1999-06-09 2004-02-24 Johnson Matthey Public Limited Company Treatment of exhaust gas
US20040175315A1 (en) * 1999-08-13 2004-09-09 Brisley Robert James Catalytic wall-flow filter
US20050129601A1 (en) * 2003-11-04 2005-06-16 Engelhard Corporation Emissions treatment system with NSR and SCR catalysts
US20060120937A1 (en) * 2002-10-28 2006-06-08 Bilal Zuberi Multi-functional substantially fibrous mullite filtration substates and devices
US7062904B1 (en) * 2005-02-16 2006-06-20 Eaton Corporation Integrated NOx and PM reduction devices for the treatment of emissions from internal combustion engines
US20070110650A1 (en) * 2003-08-05 2007-05-17 Umicore Ag & Co. Kg Catalyst arrangement and method of purifying the exhaust gas of internal combustion engines operated under lean conditions

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10020170C1 (en) 2000-04-25 2001-09-06 Emitec Emissionstechnologie Process for removing soot particles from the exhaust gas of internal combustion engine comprises feeding gas through collecting element, and holding and/or fluidizing until there is sufficient reaction with nitrogen dioxide in exhaust gas
WO1993007363A1 (en) 1991-10-03 1993-04-15 Toyota Jidosha Kabushiki Kaisha Device for purifying exhaust of internal combustion engine
JP3358392B2 (en) * 1995-06-15 2002-12-16 トヨタ自動車株式会社 Diesel engine exhaust purification system
US6367246B1 (en) * 1997-04-24 2002-04-09 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device for internal combustion engine
JP3584702B2 (en) * 1997-10-21 2004-11-04 松下電器産業株式会社 Exhaust gas purification filter and exhaust gas purification device using the same
GB9805815D0 (en) 1998-03-19 1998-05-13 Johnson Matthey Plc Manufacturing process
FI107828B (en) 1999-05-18 2001-10-15 Kemira Metalkat Oy Systems for cleaning exhaust gases from diesel engines and method for cleaning exhaust gases from diesel engines
EP1055806A3 (en) * 1999-05-28 2003-03-12 Ford Global Technologies, Inc. NOx trap and particulate filter system for an internal combustion engine
GB9915939D0 (en) * 1999-07-08 1999-09-08 Johnson Matthey Plc Improvements in pollution control
JP2002188435A (en) * 2000-10-12 2002-07-05 Toyota Motor Corp Exhaust gas purifying filter
DE10054877A1 (en) * 2000-11-06 2002-05-29 Omg Ag & Co Kg Exhaust gas cleaning system for the selective catalytic reduction of nitrogen oxides under lean exhaust gas conditions and methods for exhaust gas cleaning
GB0104682D0 (en) 2001-02-26 2001-04-11 Johnson Matthey Plc Gas treatment using ammonia
GB0220645D0 (en) 2002-09-05 2002-10-16 Johnson Matthey Plc Exhaust system for a lean burn ic engine
US20080256936A1 (en) * 2007-04-17 2008-10-23 Geo2 Technologies, Inc. Selective Catalytic Reduction Filter and Method of Using Same
US7229597B2 (en) * 2003-08-05 2007-06-12 Basfd Catalysts Llc Catalyzed SCR filter and emission treatment system
US7481983B2 (en) * 2004-08-23 2009-01-27 Basf Catalysts Llc Zone coated catalyst to simultaneously reduce NOx and unreacted ammonia
US7673445B2 (en) * 2004-11-09 2010-03-09 Ford Global Technologies, Llc Mechanical apparatus having a catalytic NOx storage and conversion device
DE102005005663A1 (en) * 2005-02-08 2006-08-17 Daimlerchrysler Ag Exhaust gas after-treatment device for motor vehicle diesel engine, has nitrous oxide storing catalyst coating and selective catalyst reduction-catalyst coatings that are arranged on wall inlet- and outlet sides of filter, respectively
JP2007285295A (en) * 2006-03-24 2007-11-01 Ngk Insulators Ltd Exhaust emission control system
DE102006038288A1 (en) * 2006-08-16 2008-02-21 Man Nutzfahrzeuge Aktiengesellschaft aftertreatment system
RU2455503C2 (en) * 2006-12-21 2012-07-10 Джонсон Мэттей Паблик Лимитед Компани Device with internal combustion engine operating on lean mixture and exhaust system
US7727499B2 (en) * 2007-09-28 2010-06-01 Basf Catalysts Llc Ammonia oxidation catalyst for power utilities
GB2457651A (en) 2008-01-23 2009-08-26 Johnson Matthey Plc Catalysed wall-flow filter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6696031B1 (en) * 1999-06-09 2004-02-24 Johnson Matthey Public Limited Company Treatment of exhaust gas
US20040175315A1 (en) * 1999-08-13 2004-09-09 Brisley Robert James Catalytic wall-flow filter
US20060120937A1 (en) * 2002-10-28 2006-06-08 Bilal Zuberi Multi-functional substantially fibrous mullite filtration substates and devices
US20070110650A1 (en) * 2003-08-05 2007-05-17 Umicore Ag & Co. Kg Catalyst arrangement and method of purifying the exhaust gas of internal combustion engines operated under lean conditions
US20050129601A1 (en) * 2003-11-04 2005-06-16 Engelhard Corporation Emissions treatment system with NSR and SCR catalysts
US7062904B1 (en) * 2005-02-16 2006-06-20 Eaton Corporation Integrated NOx and PM reduction devices for the treatment of emissions from internal combustion engines

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JP2011527403A (en) 2011-10-27
EP2315924B1 (en) 2013-10-30
EP2650496B1 (en) 2021-02-24
KR101660026B1 (en) 2016-09-27
JP6450540B2 (en) 2019-01-09
CN102159807A (en) 2011-08-17
KR20110041502A (en) 2011-04-21
BRPI0915553A2 (en) 2016-01-26
RU2011104476A (en) 2012-08-20
GB0812544D0 (en) 2008-08-13
CN102159807B (en) 2014-03-19
WO2010004320A3 (en) 2010-03-04
EP2315924A2 (en) 2011-05-04
WO2010004320A2 (en) 2010-01-14
US20140241950A1 (en) 2014-08-28
US8756926B2 (en) 2014-06-24
GB201101385D0 (en) 2011-03-09
RU2504668C2 (en) 2014-01-20
US9527031B2 (en) 2016-12-27
EP2650496A2 (en) 2013-10-16
US20110179777A1 (en) 2011-07-28
JP5607042B2 (en) 2014-10-15
EP2650496A3 (en) 2018-04-11
JP2015044191A (en) 2015-03-12

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