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WO2000061265A1 - Lit de garde pour catalyseur anti-pollution - Google Patents

Lit de garde pour catalyseur anti-pollution Download PDF

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Publication number
WO2000061265A1
WO2000061265A1 PCT/US2000/009027 US0009027W WO0061265A1 WO 2000061265 A1 WO2000061265 A1 WO 2000061265A1 US 0009027 W US0009027 W US 0009027W WO 0061265 A1 WO0061265 A1 WO 0061265A1
Authority
WO
WIPO (PCT)
Prior art keywords
guard bed
oxide
support layer
set forth
phosphateable
Prior art date
Application number
PCT/US2000/009027
Other languages
English (en)
Inventor
Gordon James Johnston Bartley
Original Assignee
Southwest Research Institute
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 Southwest Research Institute filed Critical Southwest Research Institute
Publication of WO2000061265A1 publication Critical patent/WO2000061265A1/fr

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
    • F01N3/02—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
    • F01N3/0215—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 the filtering elements having the form of disks or plates
    • 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
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • 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
    • B01D53/9495—Controlling the catalytic process
    • 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
    • F01N13/0097—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 the purifying devices are arranged in a single housing
    • 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
    • F01N3/10—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
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for 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
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • 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
    • F01N2570/02—Lead
    • 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
    • F01N2570/04—Sulfur or sulfur 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
    • F01N2570/06—Zinc
    • 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
    • F01N2570/08—Phosphorus
    • 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

Definitions

  • This invention relates generally to a guard bed for protecting a catalytic converter in an emission control system, and more particularly to such a guard bed that has a porous metallic foam element disposed upstream of the catalytic converter component of the emission control system.
  • Emissions control catalysts are commonly used to convert noxious emissions into less harmful products.
  • noxious emissions control catalysts are widely used to control emissions from internal combustion engines, such as automobile engines.
  • the acceptable emission levels from various sources have become successively lower through new regulations imposed by the Environmental Protection Agency
  • Additives are needed to reduce engine wear and improve oil performance, but can have a detrimental effect on the catalyst performance due to build-up, over time, on the catalyst itself. As the acceptable emission levels decrease, catalyst poisoning becomes increasingly more significant. Limitations on additives can only go so far in reducing catalyst poisoning without reducing the effectiveness of lubricating oils to protect the engine.
  • Blanchet trap includes a tubular housing with an internal peripheral wall whereby exhaust gases passing through the tubular housing are accelerated outwardly by centrifugal force and particulate matter carried in the gas is trapped in a porous lining provided in the tubular housing. Thus, particulate matter carried in the portion of the exhaust gas stream that contacts the porous lining is removed from that portion of the gas stream prior to passage through a catalytic converter.
  • Another system for removing soot from diesel engine exhaust gas is described in U.S. Patent No. 5,067,319, issued November 26, 1991, to Franz Moser and titled SYSTEM FOR
  • the Moser system includes an apparatus for branching the exhaust gas stream into two branch lines which are adapted to be shut off in alternation by a change-over valve.
  • One of the branch lines includes a soot filter, whereas the other branch line constitutes a by-pass line.
  • the change-over valve is switched to direct the exhaust gas through the soot filter.
  • both of the trap systems are permanent elements of the emission control system and are not easily replaced when they become saturated or otherwise lose their effectiveness .
  • the present invention is directed to overcoming the problems set forth above. It is desirable to have a guard bed for protecting a catalytic converter in an exhaust gas system that is disposed normal to the gas flow, requiring that all of the exhaust gases passing to the catalytic converter are first treated to remove compounds that would otherwise poison or adversely affect the catalytic converter. Moreover, it is desirable to have a cost-effective, replaceable, catalytically active catalyst guard bed to protect the primary catalytic converter of an emission control system from the adverse effects of poison deposition. Also, it is desirable to have such a catalyst guard bed that is not only effective at removing poisons from the exhaust gases, but also avoids creating new problems in engine and emissions system performance .
  • a guard bed for protecting a catalytic converter in an emission control system is disposed at a position whereat the gases containing products of combustion discharged from internal combustion engine pass through the guard bed prior to passage through the catalytic converter.
  • the guard bed includes a porous metallic foam element disposed normal to the path of the exhaust gases and provides a substrate structure on which a thermally stable phosphateable support layer is disposed.
  • the thermally stable phosphateable support layer includes at least one oxide of a metal selected from the group consisting of aluminum, cerium, lanthanum, praseodymium and neodymium.
  • a catalytic material comprising at least one Group VIII metal is disposed on the phosphateable support layer.
  • the oxides being pre- mixed and deposited as a slurry on the substrate, and then dried and fired to form the phosphateable support layer.
  • the support layer being aluminum oxide having at least one oxide selected from the group consisting of cerium oxide, lanthanum oxide, praseodymium oxide and neodymium oxide dispersed within the aluminum oxide.
  • the dispersed oxides having a combined surface area from about 10m 2 /g to about 200m 2 / -
  • Still other features of the catalytic converter guard bed embodying the present invention include the support layer having a phosphation promoter comprising at least one oxide of a metal selected from the group consisting of zirconium, magnesium, calcium, strontium and barium. Yet additional features include the catalytic material disposed on the phosphateable support layer comprising from about 0.02 weight percent to about 2.00 weight percent of the support layer.
  • Yet another feature of the catalytic converter guard bed embodying the present invention includes the porous metallic foam element being a replaceable disposable component of the emission control system.
  • FIG. 1 is a schematic diagram of an emission control system having a protective guard bed embodying the present invention incorporated therein;
  • Fig. 2 is a partial cross-section of a porous metallic foam element of the guard bed embodying the present invention.
  • Fig. 3 is an enlarged section of the porous metallic foam element of the guard bed embodying the present invention.
  • a catalyst guard bed in the preferred embodiment of the present invention, as shown schematically in Fig. 1, a catalyst guard bed, indicated generally by the reference numeral 10, comprises a relatively thin, for example on the order of approximately one-half inch thickness, disk of a porous metallic foam 12 positioned upstream of a first catalytic converter 14 of an emission control system, indicated generally by the reference numeral 16.
  • the porous metallic foam element or unit 12 is positioned immediately adjacent to the catalytic converter 14, and maintained in that position by a removable housing 18, whereby the metallic foam unit 12 can be readily removed and replaced when its performance deteriorates after a period of use.
  • Porous metallic foam is cast metal with finely divided, evenly distributed gas bubbles that form a plurality of interconnecting passages throughout the body of the metal, as illustrated in Figs. 2 and 3.
  • the metallic foam element 12 of the present invention is preferably formed of a FeCr alloy, a ferritic stainless alloy, Inconel, or silicon carbide, having from about five to about fifty pores per square inch of surface area, and desirably from about five to about twenty pores per square inch of surface area.
  • Metallic foams formed of the above-described materials and pore densities have excellent strength properties and induce turbulent flow to exhaust gases passing through the unit. Turbulent flow improves exhaust gas interaction with the catalytic surface materials disposed on the metallic foam substrate.
  • the metallic foam materials listed above have high-temperature strength characteristics whereby the integrity of the guard bed 10 is maintained under high engine exhaust gas conditions with minimal foam thickness.
  • the guard bed 10 is catalyzed to maintain effective reduction of cold start emissions and also to promote the formation of phosphates on its surface.
  • Platinum Group Metals (PGM) and in particular palladium, platinum and rhodium, are useful in effecting a catalytic reduction of hydrocarbons, carbon monoxide, and oxides of nitrogen.
  • a second catalytic material may be used to promote formation of phosphates on the guard bed surface.
  • the catalytically active materials are supported in or on a high surface area oxide support layer 20, as illustrated in Fig. 3, which is both resistant to thermal loss of surface area and easily phosphated.
  • the high surface area support layer 20 comprises gamma, theta, or delta alumina, although other high surface area alumina phases may also be used.
  • the support layer 20 has a surface area from about 10m 2 /g to about 200m 2 /g and preferably from about 80m 2 /g to about 160m 2 /g.
  • Phosphateable materials include the aforementioned alumina and, if desired, rare earth oxides such as oxides of cerium, lanthanum, praseodymium, and neodymium oxide, or mixtures thereof. The rare earth oxides may be dispersed on the alumina support from solution using standard impregnation techniques, or added as a physical mixture.
  • the rare earth oxides desirably have a surface area in the range from about 10m 2 /g to about 200m 2 /g.
  • Rare earth oxide loadings are desirably from about one to about 90 weight percent of the total wash coat, and preferably in the range from about five to about 45 weight percent of the total wash coat .
  • the phosphation process is also desirably promoted by the addition of catalytic additives such as Group VIII metals, in particular platinum, palladium, rhodium, and ruthenium.
  • the Group VIII catalytic additives When the Group VIII catalytic additives are deposited on the support layer 20, the loadings should be from about 0.02 to about 2.00 weight percent of the support layer 20.
  • the Group VIII catalytic materials also desirably affect the conversion of hydrocarbon, carbon monoxide, and oxides of nitrogen.
  • the catalytic guard bed 10 desirably enhances the effectiveness of the emission control system, without significantly affecting the operation of the engine.
  • the primary purpose of the catalytic guard bed 10 is to effectively remove most of the primary catalyst poisons before the exhaust gases reach the downstream catalytic converter 14.
  • the porous metallic foam 12 provides a high surface- area substrate structure for the support layer 20.
  • the support layer 20 disposed on the substrate structure is thermally stable and phosphateable and comprises at least one oxide of a metal selected from the group consisting of aluminum, cerium, lanthanum, praseodymium, and neodymium.
  • a catalytic material comprising a Group VIII metal is disposed on or within the phosphateable support layer 20.
  • the oxide of at least one metal selected from the group consisting of aluminum, cerium, lanthanum, praseodymium, and neodymium may be pre-mixed and deposited by impregnation techniques or as a physical mixture on the substrate 12 and then dried and fired to complete formation of the phosphateable support layer 20.
  • the oxides dispersed in the support layer have a combined surface area of from about 10m 2 /g to about 200m 2 /g.
  • the support layer 20 may desirably include a phosphation promoter comprising at least one oxide of a metal selected from a group consisted of zirconium, magnesium, calcium, strontium, and barium.
  • An additional important feature of the guard bed 10 embodying the present invention includes the replaceability of the metallic foam element 12 which may be removed by opening the housing 18, removing the spent unit and replacing it with a new metallic foam element 12. This enables the guard bed 10 to remain effective, even after prolonged use under adverse conditions which would otherwise adversely affect the catalytic converter 14.
  • the metallic foam element 12 should be removed and replaced with a new unit when vehicle emissions exceed acceptable limits.
  • a simple replacement of the metallic foam element 12 is significantly cheaper than replacing the catalytic converter 14.
  • the present invention is described in terms of a preferred exemplary embodiment, with specific illustrative phosphateable and catalytic materials, those skilled in the art will recognize that changes in those illustrative materials may be made without departing from the spirit of the invention.
  • the metallic foam element 12 may have a different thickness than that stated in the illustrative embodiment and may have a shape other than that of the illustrative disk shape. Such changes are intended to fall within the scope of the following claims.
  • Other aspects, features, and advantages of the present invention may be obtained from a study of this disclosure and the drawings, along with the appended claims .

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

Abstract

Un lit de garde catalytique (10) est placé en amont du composant convertisseur catalytique primaire (14) d'un système anti-pollution (16). Le lit de garde (10) est constitué d'une mousse métallique poreuse (12) sur laquelle une couche de support pouvant être phosphatée et stable à la chaleur, est prévue. Par ailleurs, un matériau catalytique est prévu sur la couche de support pouvant être phosphatée.
PCT/US2000/009027 1999-04-08 2000-04-05 Lit de garde pour catalyseur anti-pollution WO2000061265A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28825899A 1999-04-08 1999-04-08
US09/288,258 1999-04-08

Publications (1)

Publication Number Publication Date
WO2000061265A1 true WO2000061265A1 (fr) 2000-10-19

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PCT/US2000/009027 WO2000061265A1 (fr) 1999-04-08 2000-04-05 Lit de garde pour catalyseur anti-pollution

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WO (1) WO2000061265A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2867093A1 (fr) * 2004-03-04 2005-09-09 Bosch Gmbh Robert Dispositif pour epurer des gaz d'echappement
WO2007078826A3 (fr) * 2005-12-21 2007-08-23 Basf Catalysts Llc Systeme de controle du cod et des particules dans les moteurs diesels
US7355961B2 (en) 2000-02-22 2008-04-08 Nokia Corporation Method and arrangement for digital signal transmission using layered space-time codes
US7785548B2 (en) * 2004-03-15 2010-08-31 Honeywell International Inc. Apparatus and method for storing and releasing sulfur containing aromatic compounds from a fuel stream of an internal combustion engine
WO2012000599A1 (fr) * 2010-07-01 2012-01-05 Bayerische Motoren Werke Aktiengesellschaft Patentabteilung Aj-3 Agencement d'un catalyseur dans un système d'échappement
US9030310B2 (en) 2012-12-24 2015-05-12 Ford Global Technologies, Llc Capacitance-based catalytic converter protection systems and configurations
US9145110B2 (en) 2011-10-27 2015-09-29 Ford Global Technologies, Llc Vehicle wireless charger safety system
US9227594B2 (en) 2012-12-24 2016-01-05 Ford Global Technologies, Llc Resistance-based catalytic converter protection systems and configurations

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1444444A (en) * 1972-10-06 1976-07-28 Nissan Motor Engine exhaust pipe having a catalyst poison absorbing device
US4134733A (en) * 1975-07-09 1979-01-16 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler Apparatus for treatment of exhaust gases
EP0082262A1 (fr) * 1981-11-20 1983-06-29 Degussa Aktiengesellschaft Procédé pour la protection de catalysateurs pour l'épuration des gaz d'échappement, utilisé dans les moteurs à combustion interne fonctionnant avec des carburants contenant du plomb
EP0153157A2 (fr) * 1984-02-14 1985-08-28 Honda Giken Kogyo Kabushiki Kaisha Convertisseur catalytique
EP0161743A2 (fr) * 1984-02-22 1985-11-21 Engelhard Corporation Catalyser d'oxyde de vanadium pour la réduction d'oxyde d'azote et procédé pour son utilisation
JPS61274746A (ja) * 1985-05-31 1986-12-04 Nissan Motor Co Ltd 一体型排ガス浄化用触媒
EP0273232A2 (fr) * 1986-12-20 1988-07-06 Adam Opel Aktiengesellschaft Procédé de purification des gaz d'échappement des moteurs à combustion interne et pot d'échappement catalytique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1444444A (en) * 1972-10-06 1976-07-28 Nissan Motor Engine exhaust pipe having a catalyst poison absorbing device
US4134733A (en) * 1975-07-09 1979-01-16 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler Apparatus for treatment of exhaust gases
EP0082262A1 (fr) * 1981-11-20 1983-06-29 Degussa Aktiengesellschaft Procédé pour la protection de catalysateurs pour l'épuration des gaz d'échappement, utilisé dans les moteurs à combustion interne fonctionnant avec des carburants contenant du plomb
EP0153157A2 (fr) * 1984-02-14 1985-08-28 Honda Giken Kogyo Kabushiki Kaisha Convertisseur catalytique
EP0161743A2 (fr) * 1984-02-22 1985-11-21 Engelhard Corporation Catalyser d'oxyde de vanadium pour la réduction d'oxyde d'azote et procédé pour son utilisation
JPS61274746A (ja) * 1985-05-31 1986-12-04 Nissan Motor Co Ltd 一体型排ガス浄化用触媒
EP0273232A2 (fr) * 1986-12-20 1988-07-06 Adam Opel Aktiengesellschaft Procédé de purification des gaz d'échappement des moteurs à combustion interne et pot d'échappement catalytique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 136 (C - 419) 30 April 1987 (1987-04-30) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7355961B2 (en) 2000-02-22 2008-04-08 Nokia Corporation Method and arrangement for digital signal transmission using layered space-time codes
FR2867093A1 (fr) * 2004-03-04 2005-09-09 Bosch Gmbh Robert Dispositif pour epurer des gaz d'echappement
US7785548B2 (en) * 2004-03-15 2010-08-31 Honeywell International Inc. Apparatus and method for storing and releasing sulfur containing aromatic compounds from a fuel stream of an internal combustion engine
WO2007078826A3 (fr) * 2005-12-21 2007-08-23 Basf Catalysts Llc Systeme de controle du cod et des particules dans les moteurs diesels
US7506504B2 (en) 2005-12-21 2009-03-24 Basf Catalysts Llc DOC and particulate control system for diesel engines
CN102985651A (zh) * 2010-07-01 2013-03-20 宝马股份公司 排气系统中的催化器装置
WO2012000599A1 (fr) * 2010-07-01 2012-01-05 Bayerische Motoren Werke Aktiengesellschaft Patentabteilung Aj-3 Agencement d'un catalyseur dans un système d'échappement
US9145110B2 (en) 2011-10-27 2015-09-29 Ford Global Technologies, Llc Vehicle wireless charger safety system
US9493085B2 (en) 2011-10-27 2016-11-15 Ford Global Technologies, Llc Vehicular charging and protection systems
US9030310B2 (en) 2012-12-24 2015-05-12 Ford Global Technologies, Llc Capacitance-based catalytic converter protection systems and configurations
US9227594B2 (en) 2012-12-24 2016-01-05 Ford Global Technologies, Llc Resistance-based catalytic converter protection systems and configurations
US9631541B2 (en) 2012-12-24 2017-04-25 Ford Global Technologies, Llc Capacitance-based vehicular component protection systems and configurations
RU2630862C2 (ru) * 2012-12-24 2017-09-13 Форд Глобал Технолоджис, ЛЛК Система защиты каталитического нейтрализатора

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