EP1321643B1 - Anordnung und Verfahren zur Nachbehandlung von Abgasen - Google Patents
Anordnung und Verfahren zur Nachbehandlung von Abgasen Download PDFInfo
- Publication number
- EP1321643B1 EP1321643B1 EP02028305A EP02028305A EP1321643B1 EP 1321643 B1 EP1321643 B1 EP 1321643B1 EP 02028305 A EP02028305 A EP 02028305A EP 02028305 A EP02028305 A EP 02028305A EP 1321643 B1 EP1321643 B1 EP 1321643B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- catalytic converter
- internal combustion
- combustion engine
- nitrogen oxides
- exhaust gases
- 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.)
- Expired - Lifetime
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- 239000007789 gas Substances 0.000 title claims description 28
- 238000000034 method Methods 0.000 title claims description 17
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 74
- 230000003197 catalytic effect Effects 0.000 claims description 27
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 230000003647 oxidation Effects 0.000 claims description 17
- 238000007254 oxidation reaction Methods 0.000 claims description 17
- 239000000446 fuel Substances 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 description 30
- 239000002245 particle Substances 0.000 description 19
- 230000008929 regeneration Effects 0.000 description 11
- 238000011069 regeneration method Methods 0.000 description 11
- 239000004071 soot Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 230000003685 thermal hair damage Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002089 NOx Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/029—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust
- F01N3/0293—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust injecting substances in exhaust stream
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- 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
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- 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
- F01N13/0093—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 of the same type
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- 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
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- 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]
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- 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
- F01N3/025—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 fuel burner or by adding fuel to exhaust
- F01N3/0253—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 fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
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- 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
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- 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—Regulation of absorbents or adsorbents, e.g. purging
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- 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—Regulation of absorbents or adsorbents, e.g. purging
- F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
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- 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
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- 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
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- F01N2250/00—Combinations of different methods of purification
- F01N2250/14—Combinations of different methods of purification absorption or adsorption, and filtering
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- 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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
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- 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
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- 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
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
- F01N3/30—Arrangements for supply of additional air
- F01N3/32—Arrangements for supply of additional air using air pump
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- 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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
Definitions
- the invention is based on an arrangement or one Process for the treatment of exhaust gases, in particular one Diesel engine, according to the genre of the independent Expectations.
- DE 199 21 974 already has one Device for reducing harmful components in the Exhaust gas from an internal combustion engine is known, in which one Particulate filter is arranged downstream of a storage catalytic converter. This can lead to a cold start in particular of the engine and / or at low engine load or low Speeds of the motor insufficient efficiency Denitrification of the exhaust gas can be achieved.
- the means and the furnishings complement each other in an ideal way Way, also with regard to soot oxidation, so that Combined exhaust aftertreatment system for simultaneous High reduction of nitrogen oxide and particle emissions Efficiency in denitrification achieved a safe Soot oxidation ensures and thermal damage the system components, especially the agent, safely can be prevented.
- This Auxiliary arrangement advantageously enables Particle filter regeneration or regeneration and / or Desulfation of a denitrification catalyst Facility. This can be done easily by feeding an appropriate amount of an auxiliary, i.e. through a operation of an aid supply unit as required, depending on the desired measure (Particulate filter regeneration, regeneration of the Denitrification catalyst or desulfation of Denitrification catalyst) happen.
- Oxidation catalyst or an electrically heated (Oxidation) catalyst, which works the way support supplied aids in a suitable manner can.
- Fuel in particular, can also be obtained in a simple manner Diesel fuel, used as an aid.
- The also enables the regeneration of the Particulate filter or for regeneration / desulfation of the denitrification catalyst of the facility required Conditions not only through the auxiliary arrangement need to be adjusted, but additional motor Interventions are possible, provided they are the means to Do not endanger the reduction of nitrogen oxides.
- It can in particular be provided over a moderate Late adjustment of the start of injection in the Internal combustion engine already part of the temperature increase to achieve so that the fuel supply on the Auxiliary arrangement quasi as a fine-tuning over the Oxidation catalyst achieved an additional exotherm, so to ensure that those for Diesel particle filter regeneration required temperature is achieved.
- This has the additional advantage that the Process of fuel injection into the Internal combustion engine can be designed more freely, as a fine-tuned post-motor fuel supply the optimal Setting the conditions for exhaust gas aftertreatment guaranteed.
- Figure 1 shows a diesel engine 1, the an exhaust manifold 3 and an exhaust gas turbocharger 5 with an arrangement 2 for exhaust gas aftertreatment is connected.
- the connected to the exhaust gas turbocharger 5 near the engine exhaust pipe 10 leads to one designed as a storage catalytic converter Denitrification catalyst 14.
- a middle exhaust pipe 16 connects the denitrification catalyst 14 with one Oxidation catalyst 20.
- An auxiliary supply unit 18 to supply fuel to the exhaust tract is on the middle exhaust pipe 16 introduced so that fuel behind the denitrification catalyst 14 and before Catalyst 20 can be introduced into the arrangement 2.
- An exhaust gas connection line 22 leads from Oxidation catalyst 20 to a particulate filter 24.
- Ein Denitrification catalyst 26 in the form of a Storage catalytic converter immediately follows that Particle filter 24; the exit of the Denitrification catalyst 26 is not one with one Exhaust pipe 28 shown in more detail connected.
- the storage catalysts 14 and 26 are used for temporary Storage of the nitrogen oxides contained in the exhaust gas. in the so-called regeneration operation by a internal engine and / or a post engine supply of Desorb fuel that is introduced into the exhaust system the nitrogen oxides and are reduced to nitrogen.
- the Particle filter 24 is used to separate the particles a filtering medium. At times a regeneration of the Particle filter take place in which the settled solid or soot particles oxidized to carbon dioxide or carbon monoxide become.
- the storage catalytic converter 14 near the engine reaches after the optimum operating temperature quickly when the engine is started. They are in the position close to the engine in the exhaust system Exhaust gas temperatures so high that immediately after Starting the engine high NOx sales rates can be achieved.
- Thermal damage to the near-engine nitrogen oxide storage catalytic converter 14 will avoid the Exhaust gas temperature via a corresponding control of the Check the fuel supply to the engine so that the near-engine nitrogen oxide storage catalytic converter 14 harmful Exhaust temperatures cannot be reached.
- the for the Regeneration and desulfation of the storage catalytic converter 14 required conditions are about motor Interventions shown.
- a first mode is via the fuel supply unit 18 hydrocarbons in one Amount supplied that with sufficient remaining Residual oxygen content via the oxidation catalyst Temperature increase in the exhaust gas is achieved, which is sufficient is to regenerate the particle filter.
- hydrocarbons in a second Mode are hydrocarbons in such an amount supplied that over the oxidation catalyst reducing atmosphere is generated, so that on the absorbed second nitrogen oxide storage catalyst 26 Nitrogen oxides can be desorbed and reduced to nitrogen.
- a third mode uses hydrocarbons in one such amount timed so that the for a desulfation of the second nitrogen oxide storage catalyst 26 required temperature and the required reducing or alternating reducing / oxidizing atmosphere is represented.
- the storage catalytic converter 14 close to the engine can be of its size be dimensioned so small that it from medium Engine load, or from medium engine speeds, due to the then high space velocities of the exhaust gas only stores little or no nitrogen oxides.
- the below these conditions the storage catalytic converter 14 near the engine Passing nitrogen oxides represent the particulate filter Soot oxidation using nitrogen dioxide is available, whereby the required conversion of nitrogen monoxide too Nitrogen dioxide either on the particle filter upstream oxidation catalytic converter or in the particle filter itself (if it is coated catalytically) can. Because in this process via the particle filter Nitrogen oxides are not reduced, are behind Particulate filters still nitrogen oxides in the following second nitrogen oxide storage catalyst 26 can be stored.
- the engine speeds up the nitrogen oxides only up to the first storage catalytic converter near the engine, while at medium or high loads or speeds only in the particle filter downstream storage catalyst can be stored.
- the soot particles become independent of the operating situation stored in the particle filter 24.
- the Regeneration of the particle filter by adding a catalytic additive to diesel fuel get supported.
- the additive supply can be in the normally provided fuel tank or else after-engine into the exhaust system. It is also possible, only the fuel that over the Aid supply unit 18 in the exhaust tract is introduced to add an additive.
- connection line 22 the output of a secondary air pump be attached to the intended desulfation clocked is operated to be bold together with the then set exhaust gas an oscillation of the lambda value around the To achieve value 1 (so-called "Lambda wobble").
- Figure 2 shows an alternative arrangement 21 to Exhaust aftertreatment, which also has a Exhaust gas turbocharger 5 and an exhaust manifold 3 with a Diesel engine 1 is connected. Same or Similar components as in Figure 1 are the same Provide reference numerals and will not be repeated described.
- the arrangement 2 an integrated exhaust gas aftertreatment 30, in which is a denitrification catalyst and a diesel particulate filter are integrated on a ceramic block. Unit 30 therefore takes over the function of separately in Figure 1 executed units 24 and 26. It is also in the Unit 30 of the denitrification catalyst to the particle filter downstream.
- the mode of operation is the same as that in FIG. 1 .
- the use of an integrated Exhaust aftertreatment unit 30 enables a compact, space-saving arrangement and enables, for example, behind the oxidation catalyst 20 several Denitrification catalysts and particle filters in alternate order.
- oxidation catalyst 20 As well in Figure 1 a heatable catalyst or a heated oxidation catalyst can be used.
- Aid supply unit 18 can be, for example Arrangement used as in the German Patent application with the file number 44 36 415.6 described is.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Description
Claims (18)
- Anordnung zur Nachbehandlung von Abgasen einer Brennkraftmaschine (1), insbesondere einer Dieselbrennkraftmaschine, mit einer Einrichtung zur Beseitigung von Partikeln und Stickoxiden, wobei die Abgase die Einrichtung durchströmen können, dadurch gekennzeichnet, daß stromaufwärts der Einrichtung (24, 26; 30) ein über eine Abgasleitung (16, 22) mit der Einrichtung verbundenes Mittel (14) zur Reduktion von Stickoxiden vorgesehen ist, wobei das Mittel nahe der Brennkraftmaschine angeordnet ist, so daß das Mittel im Vergleich zur Einrichtung stärker durch die Abgase erwärmt wird und somit das Mittel Stickoxide in Betriebssituationen der Brennkraftmaschine reduzieren kann, in denen die Einrichtung hierzu nicht aktiv wird, insbesondere bei niedriger Last und/oder niedriger Drehzahl der Brennkraftmaschine.
- Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß das Mittel so dimensioniert ist, daß es ab mittleren Motordrehzahlen beziehungsweise ab mittlerer Motorlast außerhalb seines Arbeitsbereiches liegt und die Stickoxide passieren läßt, so daß sie der Einrichtung zur Partikelbeseitigung zur Verfügung stehen.
- Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwischen dem Mittel (14) und der Einrichtung (24, 26; 30) eine Hilfsanordnung (18, 20) vorgesehen ist, wobei die Hilfsanordnung eine Hilfsmittel-Zuführungseinheit (18) aufweist zur Zufuhr eines Hilfsmittels zur Unterstützung der Abgasnachbehandlung in der Einrichtung (24, 26; 30).
- Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß die Hilfsmittel-Zuführungseinheit (18) Kraftstoff zuführen kann.
- Anordnung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Hilfsanordnung (18, 20) einen der Hilfsmittel-Zuführungseinheit (18) nachgeordneten Katalysator, insbesondere einen Oxidationskatalysator oder einen elektrisch beheizbaren Katalysator, wahlweise einen elektrisch beheizbaren Oxidationskatalysator, aufweist zur Unterstützung einer zumindest teilweisen Verbrennung des Hilfsmittels.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Mittel (14) ein Entstickungskatalysator, insbesondere ein Speicherkatalysator, ist.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Einrichtung (24, 26; 30) ein Partikelfilter (24), insbesondere ein katalytisch beschichtetes Partikelfilter, umfaßt.
- Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Einrichtung (24, 26; 30) einen Entstickungskatalysator (26), insbesondere einen Speicherkatalysator, enthält.
- Anordnung nach Anspruch 7 und 8, dadurch gekennzeichnet, daß das Partikelfilter und der Entstickungskatalysator der Einrichtung (30) auf einem Block, insbesondere auf einem Keramikblock, integriert sind.
- Verfahren zur Nachbehandlung von Abgasen einer Brennkraftmaschine, insbesondere einer Dieselbrennkraftmaschine, bei dem die Abgase eine Einrichtung zur Beseitigung von Partikeln und Stickoxiden durchströmen, dadurch gekennzeichnet, daß die Abgase vor dem Eintritt in die Einrichtung (24, 26; 30) zunächst nahe der Brennkraftmaschine mit einem Mittel (14) zur Reduktion von Stickoxiden wechselwirken und anschließend eine zur Einrichtung führende Abgasleitung (16, 22) durchlaufen, so daß die Abgase das Mittel stärker erwärmen als die Einrichtung und somit das Mittel Stickoxide in Betriebssituationen der Brennkraftmaschine reduzieren kann, in denen die Einrichtung hierzu nicht aktiv wird, insbesondere bei niedriger Last und/oder niedriger Drehzahl der Brennkraftmaschine.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß das Mittel so dimensioniert ist, daß es ab mittleren Motordrehzahlen beziehungsweise ab mittlerer Motorlast außerhalb seines Arbeitsbereiches liegt und die Stickoxide passieren läßt, so daß sie der Einrichtung zur Partikelbeseitigung zur Verfügung stehen.
- Verfahren nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß den Abgasen im Bereich der Abgasleitung (16, 22) ein Hilfsmittel zur Unterstützung der Abgasnachbehandlung in der Einrichtung (24, 26; 30) zugeführt wird.
- Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß als Hilfsmittel Kraftstoff verwendet wird.
- Verfahren nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß eine zumindest teilweise Verbrennung des Hilfsmittels katalytisch unterstützt wird.
- Verfahren nach einem der vorhergehenden Verfahrensansprüche, dadurch gekennzeichnet, daß als Mittel (14) ein Entstickungskatalysator, insbesondere ein Speicherkatalysator, verwendet wird.
- Verfahren nach einem der vorhergehenden Verfahrensansprüche, dadurch gekennzeichnet, daß die Einrichtung (24, 26; 30) ein Partikelfilter (24), insbesondere ein katalytisch beschichtetes Partikelfilter, umfaßt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Einrichtung (24, 26; 30) einen Entstickungskatalysator (26), insbesondere einen Speicherkatalysator, enthält.
- Verfahren nach Anspruch 16 und 17, dadurch gekennzeichnet, daß das Partikelfilter und der Entstickungskatalysator der Einrichtung (30) auf einem Block, insbesondere auf einem Keramikblock, integriert sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10162383A DE10162383A1 (de) | 2001-12-19 | 2001-12-19 | Anordnung und Verfahren zur Nachbehandlung von Abgasen |
DE10162383 | 2001-12-19 |
Publications (2)
Publication Number | Publication Date |
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EP1321643A1 EP1321643A1 (de) | 2003-06-25 |
EP1321643B1 true EP1321643B1 (de) | 2004-10-13 |
Family
ID=7709797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP02028305A Expired - Lifetime EP1321643B1 (de) | 2001-12-19 | 2002-12-17 | Anordnung und Verfahren zur Nachbehandlung von Abgasen |
Country Status (2)
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EP (1) | EP1321643B1 (de) |
DE (2) | DE10162383A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101091039B (zh) * | 2004-12-23 | 2010-05-12 | 乌米科雷股份两合公司 | 用于监测氮氧化物储存催化剂的氮氧化物储存容量的方法 |
US7930881B2 (en) | 2003-03-08 | 2011-04-26 | Johnson Matthey Public Limited Company | Exhaust system for lean burn IC engine including particulate filter and NOx absorbent |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10344216A1 (de) * | 2003-09-22 | 2005-05-04 | Eberspaecher J Gmbh & Co | Abgasanlage mit Partikelfilter sowie zugehörige Heizeinrichtung und zugehöriges Regenerationsverfahren |
DE10350485A1 (de) | 2003-10-29 | 2005-06-02 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine |
DE10361220B4 (de) * | 2003-12-24 | 2015-01-08 | Volkswagen Ag | Verfahren zum Regenerieren eines Partikelfilters |
DE102004029202A1 (de) * | 2004-01-02 | 2005-07-28 | Volkswagen Ag | Abgasreinigungssystem mit Haupt- und Sekundärspeichereinrichtung für Stickoxide |
FR2879237B1 (fr) * | 2004-12-09 | 2010-10-22 | Renault Sas | Derivation sur ligne d'echappement pour regeneration d'un filtre a particules |
FR2880065B1 (fr) * | 2004-12-23 | 2007-02-09 | Renault Sas | Dispositif de depollution des gaz d'echappement |
DE102005058858A1 (de) * | 2005-12-09 | 2007-06-14 | Volkswagen Ag | Verfahren zur Abgasnachbehandlung bei Verbrennungsmotoren, und Vorrichtung zur Durchführung dieses Verfahrens |
EP1837496B1 (de) * | 2006-03-23 | 2013-03-13 | Ford Global Technologies, LLC | Brennkraftmaschine mit kombiniertem Abgasnachbehandlungssystem und Verfahren zum Betreiben einer derartigen Brennkraftmaschine |
JP4458070B2 (ja) | 2006-06-22 | 2010-04-28 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP4910930B2 (ja) * | 2007-07-27 | 2012-04-04 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
FR2920472B1 (fr) * | 2007-09-04 | 2010-02-19 | Renault Sas | Dispositif d'echappement de moteur thermique. |
EP2093396A1 (de) * | 2008-02-22 | 2009-08-26 | Ford Global Technologies, LLC | Abgassystem und Verfahren für das System |
FR2941264B1 (fr) * | 2009-01-22 | 2011-07-22 | Renault Sas | Systeme de traitement des nox contenus dans des gaz d'echappement. |
FR2943729A1 (fr) * | 2009-03-24 | 2010-10-01 | Peugeot Citroen Automobiles Sa | Procede de controle des emissions polluantes d'un moteur a combustion, groupe motopropulseur et vehicule equipe de ce groupe motopropulseur |
FR2943728B1 (fr) * | 2009-03-24 | 2014-07-11 | Peugeot Citroen Automobiles Sa | Procede de controle des emissions polluantes d'un moteur a combustion, groupe motopropulseur et vehicule equipe de ce groupe motopropulseur |
FR2943730B1 (fr) * | 2009-03-24 | 2014-08-29 | Peugeot Citroen Automobiles Sa | Procede de controle des emissions polluantes d'un moteur a combustion |
DE102012211119A1 (de) | 2012-06-28 | 2014-01-02 | Robert Bosch Gmbh | Abgasreinigungseinrichtung für eine Verbrennungsanlage und Verfahren zum Betreiben der Abgasreinigungseinrichtung |
DE102015212846A1 (de) * | 2015-07-09 | 2017-01-12 | Volkswagen Aktiengesellschaft | Vorrichtung und Verfahren zur Abgasnachbehandlung einer Brennkraftmaschine |
DE102015219114B4 (de) | 2015-10-02 | 2023-05-17 | Volkswagen Ag | Verfahren zur Abgasnachbehandlung einer Brennkraftmaschine |
DE102018206355B3 (de) | 2018-04-25 | 2019-08-14 | Ford Global Technologies, Llc | Kraftfahrzeug und Betriebsverfahren |
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JPH0441914A (ja) * | 1990-06-01 | 1992-02-12 | Nissan Motor Co Ltd | 内燃機関の排気処理装置 |
DE19543219C1 (de) * | 1995-11-20 | 1996-12-05 | Daimler Benz Ag | Verfahren zum Betreiben eines Dieselmotors |
DE19921974A1 (de) * | 1999-05-12 | 2000-11-16 | Volkswagen Ag | Vorrichtung zum Reduzieren von schädlichen Bestandteilen im Abgas einer Brennkraftmaschine, insbesondere einer Diesel-Brennkraftmaschine |
US6167696B1 (en) * | 1999-06-04 | 2001-01-02 | Ford Motor Company | Exhaust gas purification system for low emission vehicle |
DE19932790A1 (de) * | 1999-07-14 | 2001-01-18 | Volkswagen Ag | Abgasreinigungsvorrichtung für eine Brennkraftmaschine und Regenerationsverfahren für diese Vorrichtung |
DE19945260A1 (de) * | 1999-09-21 | 2001-03-22 | Bayerische Motoren Werke Ag | Verfahren zur gleichzeitigen Reduktion von Stickoxiden und Rußpartikeln im Abgas eines Dieselmotors |
DE10023439A1 (de) * | 2000-05-12 | 2001-11-22 | Dmc2 Degussa Metals Catalysts | Verfahren zur Entfernung von Stickoxiden und Rußpartikeln aus dem mageren Abgas eines Verbrennungsmotors und Abgasreinigungssystem hierfür |
-
2001
- 2001-12-19 DE DE10162383A patent/DE10162383A1/de not_active Ceased
-
2002
- 2002-12-17 DE DE2002501277 patent/DE50201277D1/de not_active Expired - Lifetime
- 2002-12-17 EP EP02028305A patent/EP1321643B1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7930881B2 (en) | 2003-03-08 | 2011-04-26 | Johnson Matthey Public Limited Company | Exhaust system for lean burn IC engine including particulate filter and NOx absorbent |
CN101091039B (zh) * | 2004-12-23 | 2010-05-12 | 乌米科雷股份两合公司 | 用于监测氮氧化物储存催化剂的氮氧化物储存容量的方法 |
Also Published As
Publication number | Publication date |
---|---|
DE50201277D1 (de) | 2004-11-18 |
EP1321643A1 (de) | 2003-06-25 |
DE10162383A1 (de) | 2003-07-17 |
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