US20010004831A1 - Device and method for post-treatment of exhaust gases of an internal combustion engine - Google Patents

Device and method for post-treatment of exhaust gases of an internal combustion engine Download PDF

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Publication number
US20010004831A1
US20010004831A1 US09/767,004 US76700401A US2001004831A1 US 20010004831 A1 US20010004831 A1 US 20010004831A1 US 76700401 A US76700401 A US 76700401A US 2001004831 A1 US2001004831 A1 US 2001004831A1
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specified
region
filter
gas
rotation
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US09/767,004
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English (en)
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Axel Konig
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Individual
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Individual
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Priority claimed from DE19850762A external-priority patent/DE19850762A1/de
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    • 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
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] 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
    • B01D53/74—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
    • 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
    • F01N3/0214—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 with filters comprising movable parts, e.g. rotating 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
    • F01N3/0828—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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0871—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents using means for controlling, e.g. purging, the absorbents or adsorbents
    • 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
    • F01N3/0871—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents using means for controlling, e.g. purging, the absorbents or adsorbents
    • F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
    • 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
    • F01N2240/16—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 electric heater, i.e. a resistance heater
    • 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
    • F01N2290/00—Movable parts or members in exhaust systems for other than for control purposes
    • F01N2290/02—Movable parts or members in exhaust systems for other than for control purposes with continuous rotary movement
    • F01N2290/06—Movable parts or members in exhaust systems for other than for control purposes with continuous rotary movement driven by auxiliary drive
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • 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
    • F02B75/00—Other engines
    • F02B75/12—Other methods of operation
    • F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
    • 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

Definitions

  • the invention relates to a device and method for post-treatment of exhaust gases of an internal combustion engine, and in particular relates to a device and method for post-treatment of soot particles and/or nitrogen oxides in the exhaust gas stream.
  • Known NOx catalysts absorb nitrogen oxides produced during lean operation of an engine and reduce accumulated NOx during rich operation of the engine, where the known methods are discontinuous and accumulation and reduction of nitrogen oxides takes place at different times.
  • the accumulator In order to be able to carry out such a method, the accumulator must be emptied after a certain period of time because of its finite absorption capacity. This is done after a fixed predetermined time has elapsed or else the degree of fill of the catalyst must be determined. If the accumulator is regenerated after a fixed predetermined time, this has the disadvantage that for safety reasons the accumulating capacity of the catalyst is not fully utilized, so that optimal engine operation with regard to fuel consumption and exhaust gas behavior is not possible.
  • a minimum temperature of about 250° C. is required for effective function of a NOx-accumulating catalyst. If the exhaust gas coming from the engine is too cold, the method can only function when the catalyst is heated to this minimum temperature. Then heat losses occur, as a result of which the energy requirement is greatly increased.
  • soot particles that should not be allowed to escape into the environment are present in the exhaust gas of diesel engines.
  • the soot particles are retained and cyclically, as a given degree of fill of the soot filter is reached, they are either removed or the retained soot particles are ignited with a suitable heating device and burned. Both of these procedures are unsatisfactory for continuous use.
  • the object of the invention therefore is to develop a device and method for treatment of the exhaust gas stream of an internal combustion engine that permit optimal engine operation.
  • the device according to the invention for post-treatment of exhaust gases of an internal combustion engine has a body or monolith with channels through which the exhaust gas flows and which is arranged to rotate in the exhaust gas stream.
  • a monolith is understood to mean a body that may consist of one piece that is made of ceramic, of metallic carrier materials or of ceramic or metallic segments, which are arranged in an accommodating support structure.
  • the device has an inflow channel that is in flow communication with a part (B 1 ) of the channels of the body. Additionally provided is a flow connection that is in communication on the output side with the part B 1 of the channels approached by the inflow channel and connects said part with a part B 2 of the channels that is not in flow communication with the inflow channel.
  • the body or monolith preferably is divided into two regions B 1 , B 2 , where the exhaust gas enters the first region B 1 at the front face of the body, exits at the rear face of the first region B 1 , flows through the filter mounted there, enters a face of the second region B 2 and leaves the second region B 2 at the other face, while during flow the body rotates about an axis substantially perpendicular to the direction of flow of the exhaust gas stream.
  • the body preferably has a cylindrical shape, and the channels extend in the radial direction.
  • the body has a cylindrical recess in the axial direction, in other words, the cylinder is hollow in the axial direction.
  • the body may consist of metal or ceramic, and may be built in one piece or of segments fitted together. If the body consists of segments, the latter are traversed by channels in such a way that after the segments are assembled the channels extend in the radial direction with respect to the axis of symmetry of the cylinder.
  • the device preferably comprises a filter, which may be arranged for rotation, and the filter may in particular rotate with the monolith, while in the case of the cylindrical body with the axial recess the filter is arranged in the latter.
  • the filter may be stationary or may rotate along with the body, where its speed of rotation need not be identical to the speed of rotation of the body.
  • the internal combustion engine preferably has direct fuel injection into the combustion chamber and/or is a diesel engine.
  • the filter preferably has a heating element that serves to bring the filter to operating temperature after a cold start. When the required temperature has been reached, the heating element may be shut off. In principle, extra heating is provided only when engine conditions (exhaust gas temperature) do not lead to soot burnup.
  • the required temperature for pollutant conversion may alternatively or secondarily also be rapidly obtained by suitably selected engine parameters (injection quantity, injection course, reinjection), and here too the engine parameters are restored to their normal conditions when the desired temperature has been reached.
  • the body may be at least partially catalytically coated.
  • the device may have a stationary housing ( 10 ), having a chamber in which is arranged the body rotating about its longitudinal axis.
  • the housing preferably is made of a nonmetallic material.
  • Rotation of the body preferably is effected by a drive unit.
  • the drive unit may be an electric motor. It is alternatively possibly for the drive unit to be formed by an outer magnetic field source and magnets arranged within the housing.
  • the body may alternatively be rotated in the manner of a turbine by the exhaust gas stream.
  • the speed of rotation of the body ( 4 ) preferably is about 0.3 to 10 rpm, and the speed of rotation is selected so that the maximum of the temperature distribution obtained remains within the body, preferably at the site of the filter.
  • the device may have a means for the introduction of additional fuel in order to produce a reduction of the NOx exhaust gas component when the engine can be operated lean.
  • the means for introducing additional fuel is arranged in the axis of rotation of the body.
  • the method according to the invention provides for post-treatment of exhaust gases of an internal combustion engine, wherein a body is arranged in the exhaust gas stream, which body is traversed by channels in the direction of flow of the exhaust gas and is divided into two regions, has the following steps:
  • the body is rotated about its axis at a speed such that heating of the second region by the exhaust gas stream leads to heating of the exhaust gas stream through the first region.
  • Soot particles in the exhaust gas stream preferably are retained in a filter, which is arranged between the exhaust gas outlet-side face of the first region and the exhaust gas inlet-side face of the second region, and the speed of rotation is selected so that the maximum of the temperature region is located approximately at the filter.
  • the body used in the method preferably is at least partially catalytically coated, so that NOx accumulation of the exhaust gas is effected during the lean phases of internal combustion engine operation.
  • a continuous NOx-accumulating regeneration method can be effected by addition of reducing agents into the body.
  • the method according to the invention for desulfurization of the device according to the invention for post-treatment of exhaust gases of an internal combustion engine, where the device is designed as a NOx accumulator, has the following steps:
  • FIG. 1 a shows a horizontal cross-sectional view through a first embodiment of the device according to the invention for post-treatment of the exhaust gas of an internal combustion engine.
  • FIG. 1 b shows a vertical cross section through the device of FIG. 1 a.
  • FIG. 2 a shows horizontal cross-sectional view through a second embodiment of the device according to the invention for post-treatment of the exhaust gas of an internal combustion engine.
  • FIG. 1 a shows a horizontal cross section through a first preferred embodiment of a device according to the invention for post-treatment of the exhaust gas of an internal combustion engine.
  • a cylindrical body is arranged in a chamber within a housing 10 .
  • Untreated exhaust gas of an engine flows through an exhaust gas inlet 1 in to an outer face 2 of a first region B 1 of a cylindrical body 4 that is traversed by channels 3 .
  • Channels 3 run in the radial direction with respect to the axis of rotation 9 formed by the axis of symmetry of the cylinder.
  • the channels 3 arranged perpendicular to the axis of rotation 9 , are at least partially catalytically coated, as has already been described above.
  • the exhaust gas After exit of the exhaust gas from the inner face 5 of the body 4 , which forms an axial cavity 7 located centrally in the body, the exhaust gas goes through a particle filter 6 arranged in the cavity 7 , through the inner face 5 , enters an opposite second region B 2 , leaves region B 2 through outer face 2 and enters a discharge channel 8 .
  • the first region and the second region are each limited to 3 channels by the inflow channel 1 and the discharge channel 8 . This is not mandatory.
  • the waste gas flowing in and out in each instance reaches a first and second region B 1 , B 2 of at most 180°.
  • the first and second region may comprise at most one-half of the body 4 .
  • FIG. 1 b shows a vertical section through the device according to the invention.
  • the filter 6 which in general rotates synchronously with the body 4 , is arranged in the interior cavity of the body 4 which is traversed by channels 3 .
  • the body 4 and the filter 6 are arranged in a chamber formed by a suitable housing 10 . Rotation takes place about an axis of rotation 9 , which may serve as inlet for additional fuel for combustion in a catalytically active filter or in the rotor matrix, i.e., the body 4 .
  • FIG. 2 shows a horizontal cross-sectional view through a second embodiment of the device according to the invention for post-treatment of exhaust gases of an internal combustion engine, in which the device is operated as a pure NOx-accumulating catalyst.
  • FIG. 2 shows a body 4 , rotating about its longitudinal axis, which is coated as a NOx-accumulating catalyst and which is used as a regenerative heat exchanger.
  • the body 4 has a great plurality of fine channels 3 in the radial direction and exhaust gases flow through it radically, specifically, exhaust gases are supplied to it through an inflow channel 1 and are carried away through a discharge channel 8 , whereby first and second regions B 1 , B 2 are formed as in the case of the first embodiment.
  • the body has an axial cavity 7 , which is bounded by the inner face 5 of the body 4 .
  • the axial cavity serves for flow communication of the channels 3 of the first and of the second region B 1 , B 2 .
  • the inner part of the channels 3 is coated with a NOx-accumulating catalyst.
  • the outer part of the channels represented by a ring-shaped area T 2 , is not coated and does not participate in catalysis, having the function only of heat exchange.
  • the radial flow with simultaneous rotation allows a temperature profile to be established in the body 4 , which at the inlet and outlet sides of the outer face 2 of the body is at about exhaust gas temperature and toward the center rises steeply to about 350 to 400° C. As a result, part of the catalyst is always in an optimal temperature region for NOx accumulation.
  • the rotating arrangement of the catalyst i.e., the body 4 , provides for best possible heat recovery by the regeneration principle. With ideal heat insulation and correct dimensioning and rotational speed, the heat once brought in will not leave the system. The heat losses actually occurring are offset by the heat of reaction that is released upon pollutant oxidation in the region T 1 .
  • the ignition temperature of about 200° C. must be reached in the catalytically active region T 2 .
  • an electric heating element 11 may be provided in the center of the body 4 .
  • the temperature required for pollutant conversion may also be obtained by suitably selected engine parameters (particularly in the case of common-rail injection, for example, by variation of injection timing, injection course, injection quantity, and/or reinjection).
  • engine parameters particularly in the case of common-rail injection, for example, by variation of injection timing, injection course, injection quantity, and/or reinjection.
  • Additional temperature increase takes place only through a brief increase in pollutant concentrations, which raises the catalyst temperature through the heat of reaction released upon conversion of pollutants in the region T 1 . This increase in pollutant concentration may take place either through separate fuel introduction in the center of the body 4 , or may also be brought about through modifications of engine parameters.
  • Rotation of the body 4 is realized by a suitable electric or mechanical drive (not represented).
  • the body 4 is mounted on a shaft rotatable about its axis of rotation 9 , which is put into rotation by the abovementioned drive.
  • the additional introduction of fuel may also be effected through this shaft 9 .
  • the speed of rotation may be adapted to the operating condition of the vehicle engine by means of suitable information from the engine-control device.
  • the body 4 is arranged in a suitable stationary housing 10 .
  • Regeneration of the NOx-accumulating catalyst is effected in known fashion by engine enrichment of the exhaust gas.
  • Device with a body 4 capable of rotation in the exhaust gas stream, without catalytic coating and without filter, for producing a temperature maximum in the device;
  • Device with a body 4 , capable of rotation in the exhaust gas stream and a filter 6 arranged in the body 4 , for burnup of soot particles;
  • Device with a body 4 capable of rotation in the exhaust gas stream and having an at least partial catalytic coating of the body 4 ;
  • Device with a body 4 , capable of rotation in the exhaust gas stream, as well as a filter 6 arranged in the body 4 , and having an at least partial catalytic coating of the body.
  • T 1 Inner ring-shaped area

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
US09/767,004 1998-07-31 2001-01-22 Device and method for post-treatment of exhaust gases of an internal combustion engine Abandoned US20010004831A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19834576 1998-07-31
DE19834576.3 1998-07-31
DE19850762A DE19850762A1 (de) 1998-07-31 1998-11-04 Vorrichtung und Verfahren zur Nachbehandlung der Motorabgase einer Brennkraftmaschine
PCT/EP1999/004187 WO2000008310A1 (de) 1998-07-31 1999-06-17 Vorrichtung und verfahren zur nachbehandlung der motorabgase einer brennkraftmaschine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/004187 Continuation WO2000008310A1 (de) 1998-07-31 1999-06-17 Vorrichtung und verfahren zur nachbehandlung der motorabgase einer brennkraftmaschine

Publications (1)

Publication Number Publication Date
US20010004831A1 true US20010004831A1 (en) 2001-06-28

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US09/767,004 Abandoned US20010004831A1 (en) 1998-07-31 2001-01-22 Device and method for post-treatment of exhaust gases of an internal combustion engine

Country Status (5)

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US (1) US20010004831A1 (de)
EP (1) EP1101019A1 (de)
JP (1) JP2002522684A (de)
CN (1) CN1311844A (de)
WO (1) WO2000008310A1 (de)

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GB2436077A (en) * 2006-03-18 2007-09-19 Ford Global Tech Llc An emission control device for an engine

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US5974790A (en) 1998-03-05 1999-11-02 Ford Global Technologies, Inc. Catalytic converter decontamination method
JP4304447B2 (ja) * 2003-08-29 2009-07-29 いすゞ自動車株式会社 排気ガス浄化方法及び排気ガス浄化システム
JP4265497B2 (ja) * 2004-07-05 2009-05-20 トヨタ自動車株式会社 排気浄化装置の制御方法
US9976501B2 (en) * 2015-10-26 2018-05-22 Ford Global Technologies, Llc Methods and systems for rotating an exhaust aftertreatment device
CN105649728B (zh) * 2016-01-06 2017-12-01 嵊州北航投星空众创科技有限公司 耐用型三元催化器
US10208642B2 (en) * 2016-04-28 2019-02-19 Ford Global Technologies, Llc Systems and methods for a soot sensor
CN107694287A (zh) * 2017-11-20 2018-02-16 湖州市练市聚丰线缆厂 一种漆包线废气过滤装置

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GB2436077A (en) * 2006-03-18 2007-09-19 Ford Global Tech Llc An emission control device for an engine

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Publication number Publication date
EP1101019A1 (de) 2001-05-23
JP2002522684A (ja) 2002-07-23
CN1311844A (zh) 2001-09-05
WO2000008310A1 (de) 2000-02-17

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