EP2171228A1 - Verfahren zur regeneration wenigstens eines partikelagglomerators sowie kraftfahrzeug umfassend eine abgasnachbehandlungsanlage - Google Patents
Verfahren zur regeneration wenigstens eines partikelagglomerators sowie kraftfahrzeug umfassend eine abgasnachbehandlungsanlageInfo
- Publication number
- EP2171228A1 EP2171228A1 EP08760613A EP08760613A EP2171228A1 EP 2171228 A1 EP2171228 A1 EP 2171228A1 EP 08760613 A EP08760613 A EP 08760613A EP 08760613 A EP08760613 A EP 08760613A EP 2171228 A1 EP2171228 A1 EP 2171228A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- combustion engine
- exhaust gas
- particle agglomerator
- particle
- 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.)
- Granted
Links
- 239000002245 particle Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008929 regeneration Effects 0.000 title claims description 32
- 238000011069 regeneration method Methods 0.000 title claims description 32
- 238000002485 combustion reaction Methods 0.000 claims abstract description 73
- 239000007789 gas Substances 0.000 claims abstract description 49
- JCXJVPUVTGWSNB-UHFFFAOYSA-N Nitrogen dioxide Chemical class O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 36
- 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 claims description 34
- 230000003647 oxidation Effects 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 230000001172 regenerating effect Effects 0.000 abstract description 2
- 239000011888 foil Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change 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
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0231—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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
- F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
- F01N2340/04—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts
-
- 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
-
- 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
Definitions
- Process for the regeneration of at least one particle agglomerator and motor vehicle comprising an exhaust aftertreatment system
- the present invention relates to a method for the regeneration of at least one particle agglomerator of an exhaust aftertreatment system of an internal combustion engine of a motor vehicle.
- the invention also relates to a motor vehicle, comprising an internal combustion engine and an exhaust aftertreatment system, which is designed with at least one continuously regenerable particle agglomerator.
- the invention relates in particular to the removal of soot particles of mobile internal combustion engines, such as diesel engines.
- the particles entrained in the exhaust gas stream which essentially contain carbon
- NO 2 nitrogen dioxide
- particle agglomerators for example filters, particle separators and the like, in which the entrained particles are at least temporarily collected and deposited.
- the particle agglomerator is heated to a level that is high enough (eg, above 800 ° C.) to react the carbon with oxygen introduced in the exhaust gas.
- burners, heating elements, electrically heatable filters or an exothermic conversion of hydrocarbons can be used as a source of heat energy.
- the so-called continuous regenerative conversion of particles relies on conversion of the carbonaceous particles at lower temperatures, for example below 400 ° C., using nitrogen dioxide.
- CRT process continuous regenerative conversion of particles
- nitrogen dioxide has a high affinity for carbon, so that contacts of the Nitrogen dioxide with the soot particles regularly forms carbon dioxide and nitrogen.
- a practicable and cost-effective method for the regeneration of at least one particle agglomerator is to be specified, which in particular allows an on-demand passive regeneration.
- a suitable device for such a method should be specified, which is characterized by a low pressure drop and a particularly high efficiency with small particles (for example, with a mean diameter of at most 500 nanometers).
- the internal combustion engine is operated at least in an operating phase, that directly a sufficient proportion of nitrogen dioxide (NO 2 ) is generated in the exhaust gas to ensure a conversion of carbonaceous particles with the at least one particle agglomerator.
- NO 2 nitrogen dioxide
- the first particle agglomerator subsequently arranged in the internal combustion engine is regenerated in the manner proposed here. It is dispensed with a thermal regeneration, so that the reaction of carbonaceous particles takes place at temperatures below 400 0 C or even below 300 0 C.
- the particle agglomerator may be designed in the manner of a filter, a particle separator or similar simple devices for temporarily stopping the particles.
- the internal combustion engine is preferably a lean-burn engine, in which combustion predominantly takes place with excess air, for example in the case of the diesel engine or a so-called lean-burn engine.
- a “regeneration phase” is understood to mean a time interval in which the amount of particles in the particle agglomerator is reduced, in particular by at least 20% by weight, optionally by at least 40% by weight or even by at least 80% by weight
- Regeneration phase is understood to mean a time interval in which the amount of particles in the particle agglomerator is reduced, in particular by at least 20% by weight, optionally by at least 40% by weight or even by at least 80% by weight
- Mechanisms of how the internal combustion engine can be regulated will be referred to in detail below, in which connection it is first proposed to use the internal combustion engine itself as a source of nitrogen dioxide for the regeneration of the particle agglomerator, so that additional sources of nitrogen dioxide, such as upstream oxidation catalysts , can be dispensed with.
- the internal combustion engine is a proportion of nitrogen oxides (NO 2 ) in the range of 25 Vo 1 .-% to 60 vol .-% of all existing nitrogen oxides (NO x ).
- the conditions in the combustion chamber of the internal combustion engine are adjusted so that the proportion of nitrogen oxides based on all generated nitrogen oxides reaches a significant range, in particular of more than 30 vol .-% or even 45 vol .-% (these ratios may possibly equally in Mo 1 .-% are used for regulation).
- the 25% by volume can be used as the lower limit and / or as the mean value during the operating phase. It is also preferably proposed that the proportion of nitrogen dioxide does not substantially exceed 60% by volume, in order to still be able to generate sufficient power via the internal combustion engine.
- the internal combustion engine actively generates nitrogen dioxide (NO 2 ) up to at least one particle agglomerator alone.
- NO 2 nitrogen dioxide
- the exhaust aftertreatment system between the internal combustion engine and the particle agglomerator concerned has no means or measures for targeted enrichment of the exhaust gas with nitrogen dioxide.
- the method, or the device are particularly easy to perform and a targeted regeneration of the particle agglomerator can be controlled by the corresponding operation of the internal combustion engine.
- redox processes will not be able to be suppressed in the exhaust gas itself, but these are generally not suitable for effecting a corresponding active, significant generation of nitrogen dioxide.
- the method can be formed so that in the operating phase, an increase in the proportion of a recirculated into the internal combustion engine exhaust gas flow is effected.
- a - exhaust gas is (partially) fed back to the internal combustion engine, in particular before it reaches the at least one particle lagglomerator.
- a targeted increase in the exhaust gas recirculation rate can lead to a significant increase in the nitrogen dioxide content in the exhaust gas and thus favor the regeneration proposed here.
- the rate of the recirculated stream is preferably in the range up to 60% by volume, in particular in a range from 20% by volume to 50% by volume.
- a reduction in the combustion chamber temperature in the internal combustion engine is made in the operating phase. It has been found that combustion processes that are carried out at a lower temperature usually produce a high proportion of nitrogen dioxide in the exhaust gas.
- the combustion chamber temperature is controlled for this purpose after a peak combustion temperature in a range below 450 0 C.
- the exhaust aftertreatment system is designed for example with an exhaust gas turbocharger, which has a compression of the intake air flow result.
- the boost pressure so the pressure in the combustion chamber of the internal combustion engine, the fuel-air mixture is usually in the range of 30 to 50 bar.
- an increase in the charge pressure be made, for example, by at least 15%, possibly even 25%, of the previously regulated charge pressure.
- the oxygen content in the fuel-air mixture can be increased by a value of at least 1% and, in particular, regulated in a range from lambda 1.05 to 1.1 (about 1% oxygen or 2% oxygen).
- combustion-air ratio (lambda) sets the actual air mass m ⁇ ⁇ uF ⁇ , actually available for combustion, in relation to the at least necessary stoichiometric air mass m ⁇ ⁇ uF ⁇ , stochi- omet ⁇ sch) required for complete combustion , This effect can also, in particular for a short time, lead to the desired generation of nitrogen dioxides.
- the internal combustion engine be operated in such a way that carbonaceous particles with a mean diameter of at most 200 nanometers [nm] are produced in the exhaust gas.
- the internal combustion engine is operated so that the average diameter is at most 100 nanometers.
- this also preferably applies in an operating state of the internal combustion engine which does not coincide with the operating phase for regeneration of the particle agglomerator (regeneration phase).
- the very small particles can be converted particularly favorably with the provided nitrogen dioxide to carbon dioxide and elemental nitrogen.
- the outlet of the combustion chamber and the exhaust pipe are to be adjusted so that an excessive agglomeration of particles towards a size above the limit value mentioned here is avoided.
- an active temperature increase of the exhaust gas is carried out.
- the exhaust gas in the exhaust aftertreatment system is brought into contact with additional means for increasing the temperature so that, at the latest when contacting with the particles to be reacted, this has a setpoint temperature for the significant implementation of the CRT process.
- the means of temperature Increasing include in particular (uncoated) (electrically operated) radiators, heat exchangers and the like.
- a motor vehicle comprising an internal combustion engine and an exhaust aftertreatment system
- an exhaust aftertreatment system which is designed with at least one continuously regenerable particle lagglomerator, wherein the internal combustion engine sole active nitrogen dioxide (N ⁇ 2) source up to at least one particle agglomerator and the at least one particle agglomerator is a bypass filter (also called a "semi-filter").
- N ⁇ 2 sole active nitrogen dioxide
- the motor vehicle proposed here can be operated in particular according to the method described here according to the invention, so that a non-thermal regeneration of the at least one particle agglomerator at desired operating phases is possible.
- the motor vehicle proposed here is distinguished by its particularly simply constructed exhaust aftertreatment system, with a corresponding control of the internal combustion engine resulting in a reliable regeneration of the particle agglomerator so that clogging of the particle agglomerator and thus an increase in pressure via the particle agglomerator is avoided.
- bypass filter is characterized in that it provides a plurality of flow paths for the exhaust gas, the exhaust gas (theoretically) the possibility has to flow the particle agglomerator, without coming into contact with a filter material, or to flow through this.
- the bypass filter can be formed in the manner of a honeycomb body, which is designed for example with channel walls which are at least partially formed with a gas-impermeable material and optionally may additionally comprise a filter medium.
- the gas-impermeable material (preferably a metal foil) is now executed with elevations, guide vanes, which at least partially close (or deflect) the channel and thus cause a deflection of at least part of the exhaust gas flow towards the channel wall (or the filter medium).
- the elevations are formed so that they do not completely close the channel at any point, thus allowing a bypass flow past the survey.
- a possible construction of such a bypass filter is apparent, for example, from WO 01/80978 A1 or WO 02/00326 A1, so that reference may be made in particular to these documents for explanation.
- the at least one particle agglomerator in the flow direction of the exhaust gas at least a first zone and a second zone, wherein the second zone extends to a downstream end side and the second zone comprises an oxidation dationskatalysator.
- the particle agglomerator can be subdivided into at least two zones extending in the axial direction and over the entire cross section of the particle agglomerator, wherein the downstream zone extending to the downstream end of the particle lagglomerator is provided with an oxidation catalytic converter ,
- the first zone is preferably catalytically inactive - that is, for example, free of a coating.
- the oxidation catalyst can be designed, for example, in the manner of a customary washcoat coating with a noble metal doping.
- FIG. 1 shows a first embodiment of an exhaust aftertreatment system of a motor vehicle
- FIG. 4 shows a cross section through a further embodiment of a particle agglomerator.
- the motor vehicle 4 thus initially has an internal combustion engine 3, in particular a diesel engine, which has a plurality of combustion chambers 21 in which the supplied fuel-air mixture is burned and from which the exhaust gas is discharged through the exhaust gas conduit 19 into the environment becomes.
- an internal combustion engine 3 in particular a diesel engine, which has a plurality of combustion chambers 21 in which the supplied fuel-air mixture is burned and from which the exhaust gas is discharged through the exhaust gas conduit 19 into the environment becomes.
- an exhaust aftertreatment system 2 which has a branch for an exhaust gas recirculation 12 in the flow direction 7 after the internal combustion engine 3, so that controlled part of the exhaust gas flow can again be supplied to the combustion chambers 21 of the internal combustion engine 3. Further downstream in the direction of the flow direction 7, a particle agglomerator 1 is shown. This is followed downstream of a turbocharger 13, wherein the passage of the exhaust gas 13 at the same time a turbine is driven, the Air quantity, which is supplied via the intake manifold 20 of the internal combustion engine 3, compressed.
- the exhaust gas has flowed further in the direction of flow 7, the exhaust pipe 19, for example all the way into an underfloor region of the motor vehicle 4, it is further freed of pollutants with further exhaust aftertreatment units 24.
- the exhaust gas flows in the flow direction 7 an oxidation catalyst 11, a filter 22 and an SCR catalyst 23 (for the selective catalytic reaction of nitrogen oxide), wherein the exhaust gas is mixed before the SCR catalyst 23 with a reducing agent that only one corresponding reducing agent addition 25 is initiated.
- the thus purified and reacted exhaust gas then flows finally through the exhaust pipe 19 into the environment.
- the construction of the exhaust aftertreatment system 2 illustrated here permits, in particular, a discontinuous, targeted regeneration of the particle agglomerator 1 with nitrogen dioxides, which are provided specifically with the internal combustion engine 3.
- FIG. 2 schematically and by way of example illustrates different courses of the nitrogen dioxide concentration of the exhaust gas produced by the internal combustion engine for regeneration of the particle agglomerator.
- the abscissa 30 indicates the time while the ordinate 31 substantially illustrates the nitrogen dioxide concentration.
- the nitrogen dioxide concentration is usually arranged below a predetermined regeneration field 28 during operation of the internal combustion engine 3. If regeneration of the particle agglomerator now takes place, then the nitrogen dioxide concentration in the exhaust gas is adjusted via a regeneration phase 29 or an operating phase of the internal combustion engine such that it is located in regeneration field 28. Should the requirements of the internal combustion engine Change (eg, performance query, load range, ...) or be completed, the regeneration of the particle agglomerator, the internal combustion engine 3 can be operated again with a lower proportion of nitrogen dioxide in the exhaust gas. Thus, a non-thermal regeneration of the particle agglomerator can be carried out discontinuously and at predetermined and / or calculated times.
- the proportion of nitrogen dioxide in the exhaust gas is in principle regulated so that it is at regular intervals and / or permanently in the region of the regeneration field 28, as illustrated in particular by the second curve 27 shown in dashed lines.
- FIG. 3 illustrates a detail of an embodiment variant of a particle agglomerator 1. It is designed with essentially smooth ultrafine wire layers 15 in the manner of a metallic nonwoven, between which structured metal foils 14 are provided, so that in the flow direction 7 or a corresponding axis of the particle agglomerator 1 along extending channels 16 form.
- channel fences 17 are formed by guide surfaces 32 in the metal foil 14, which cause a (partial) discharge of the exhaust gas flow to Feinstdrahtlage 15.
- the channel galleries 17 and the guide surfaces 32 are formed so that the channel 16 is not completely closed, but a side stream 33 remains possible.
- a passage opening 18 is formed, which allows the passage of exhaust gas to adjacent channels 16.
- the exhaust gas containing nitrogen dioxide (NO 2 ), carbon (C) and oxygen (O 2 ) enters the particulate lagglomerator 1 and reacts therein with the carbonaceous particles 5 contained therein the nitrogen dioxide is used, so that nitrogen monoxide (NO), nitrogen (N 2 ), carbon dioxide (CO 2 ) and oxygen (O 2 ) finally leave the particle agglomerator 1 again.
- nitrogen monoxide (NO), nitrogen (N 2 ), carbon dioxide (CO 2 ) and oxygen (O 2 ) finally leave the particle agglomerator 1 again.
- the probability of the reaction of nitrogen oxide and soot particles is significantly increased, so that relatively high conversion rates can be realized with low pressure loss of the exhaust gas and clogging of the particle agglomerator is reliably avoided.
- FIG. 4 shows a particle agglomerator 1 which initially has a first zone 8 in the flow direction 7 and then a second zone 9 which extends as far as a rear end face 10.
- the particle agglomerator 1 is designed over its entire length with smooth ultrafine wire layers 15 and structured metal foils 14, the metal foils 14 in adjacent channels 16 having mutually (oppositely disposed) tapered channel channels 17 which simultaneously allow a side stream 33 and a portion of the exhaust gas cause the fine wire layer 15.
- the particles 5, preferably with a diameter 6 less than 200 nm are deposited in or on the walls (or the fine wire layer) of the particle agglomerator 1 and reacted with the nitrogen dioxide provided.
- the first zone 8 has no oxidatively effective coating
- the second zone 9 again generates in situ by means of a correspondingly provided oxidation catalytic converter 11 new nitrogen dioxide for regeneration of the particle agglomerator in the rear part.
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)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007032734A DE102007032734A1 (de) | 2007-07-13 | 2007-07-13 | Verfahren zur Regeneration wenigstens eines Partikelagglomerators sowie Kraftfahrzeug umfassend eine Abgasnachbehandlungsanlage |
PCT/EP2008/057038 WO2009010336A1 (de) | 2007-07-13 | 2008-06-05 | Verfahren zur regeneration wenigstens eines partikelagglomerators sowie kraftfahrzeug umfassend eine abgasnachbehandlungsanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2171228A1 true EP2171228A1 (de) | 2010-04-07 |
EP2171228B1 EP2171228B1 (de) | 2011-08-17 |
Family
ID=39705345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08760613A Active EP2171228B1 (de) | 2007-07-13 | 2008-06-05 | Verfahren zur regeneration wenigstens eines partikelagglomerators sowie kraftfahrzeug umfassend eine abgasnachbehandlungsanlage |
Country Status (8)
Country | Link |
---|---|
US (1) | US20100175371A1 (de) |
EP (1) | EP2171228B1 (de) |
JP (1) | JP2010533254A (de) |
AT (1) | ATE520867T1 (de) |
DE (1) | DE102007032734A1 (de) |
ES (1) | ES2370288T3 (de) |
TW (1) | TWI461601B (de) |
WO (1) | WO2009010336A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0924433B1 (pt) | 2009-03-12 | 2021-05-04 | Volvo Lastvagnar Ab | Método de operação para um sistema de pós-tratamento de gás de exaustão e sistema de pós-tratamento de gás de exaustão |
US9562451B2 (en) * | 2013-04-15 | 2017-02-07 | Haldor Topsoe A/S | Method and system for the removal of particulate matter soot, ash and heavy metals from engine exhaust gas |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10020170C1 (de) * | 2000-04-25 | 2001-09-06 | Emitec Emissionstechnologie | Verfahren zum Entfernen von Rußpartikeln aus einem Abgas und zugehöriges Auffangelement |
FR2780096B1 (fr) * | 1998-06-22 | 2000-09-08 | Rhodia Chimie Sa | Procede de traitement par combustion des particules carbonees dans un circuit d'echappement d'un moteur a combustion interne |
JP3580188B2 (ja) * | 1999-08-16 | 2004-10-20 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP3726588B2 (ja) * | 1999-09-27 | 2005-12-14 | 三菱自動車工業株式会社 | 内燃機関の制御装置 |
DE10031200A1 (de) | 2000-06-27 | 2002-01-17 | Emitec Emissionstechnologie | Partikelfalle zum Abscheiden von Partikeln aus dem Strom eines Fluids, Verfahren zum Abscheiden von Partikeln aus dem Strom eines Fluids und Verwendung einer Partikelfalle |
DE10104160B4 (de) * | 2001-01-30 | 2008-07-10 | Umicore Ag & Co. Kg | Verfahren zum Betreiben einer Abgasreinigungsanlage für einen Verbrennungsmotor |
DE20117873U1 (de) * | 2001-11-06 | 2002-02-14 | Emitec Gesellschaft für Emissionstechnologie mbH, 53797 Lohmar | Offener Filterkörper mit verbesserten Strömungseigenschaften |
US6912847B2 (en) * | 2001-12-21 | 2005-07-05 | Engelhard Corporation | Diesel engine system comprising a soot filter and low temperature NOx trap |
US6964157B2 (en) * | 2002-03-28 | 2005-11-15 | Ricardo, Inc | Exhaust emission control system and method for removal and storage of vehicle exhaust gas nitrogen oxides during cold operation |
JP4107017B2 (ja) * | 2002-09-02 | 2008-06-25 | 三菱ふそうトラック・バス株式会社 | エンジン制御装置 |
JP3985098B2 (ja) * | 2003-03-31 | 2007-10-03 | マツダ株式会社 | エンジンの制御装置 |
US7155901B2 (en) * | 2003-04-15 | 2007-01-02 | Ford Global Technologies, Llc | Catalyst temperature control on an electrically throttled engine |
JP4158697B2 (ja) * | 2003-06-17 | 2008-10-01 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置および排気浄化方法 |
JP2005083243A (ja) * | 2003-09-08 | 2005-03-31 | Ajiantamu:Kk | 自動車用排気ガス昇温装置 |
JP4103753B2 (ja) * | 2003-09-19 | 2008-06-18 | 日産自動車株式会社 | エンジンの排気浄化装置 |
JP2006077672A (ja) * | 2004-09-09 | 2006-03-23 | Toyota Motor Corp | 排ガス浄化フィルタ及び排ガス浄化装置 |
DE202005001257U1 (de) * | 2004-09-17 | 2005-04-07 | Arvinmeritor Emissions Tech | Abgasanlage eines Kfzs mit Dieselmotor |
DE102004045178A1 (de) | 2004-09-17 | 2006-03-23 | Zeuna-Stärker GmbH & Co. KG | Abgasanlage eines Kfzs mit Dieselmotor |
DE102004054845A1 (de) * | 2004-11-12 | 2006-06-01 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Beschichtete Partikelfalle mit Stickstoffdioxid-Neubildung |
JP2006150223A (ja) * | 2004-11-29 | 2006-06-15 | Babcock Hitachi Kk | 排ガス浄化フィルタ、該フィルタの製造方法および排ガス浄化装置 |
DE102005025045A1 (de) * | 2005-05-30 | 2006-12-14 | J. Eberspächer GmbH & Co. KG | Abgasanlage |
DE102005029338A1 (de) * | 2005-06-24 | 2007-02-08 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Verfahren zum Betrieb einer Partikelfalle sowie Vorrichtung zur Durchführung des Verfahrens |
-
2007
- 2007-07-13 DE DE102007032734A patent/DE102007032734A1/de not_active Withdrawn
-
2008
- 2008-06-05 WO PCT/EP2008/057038 patent/WO2009010336A1/de active Application Filing
- 2008-06-05 ES ES08760613T patent/ES2370288T3/es active Active
- 2008-06-05 AT AT08760613T patent/ATE520867T1/de active
- 2008-06-05 JP JP2010515443A patent/JP2010533254A/ja not_active Ceased
- 2008-06-05 EP EP08760613A patent/EP2171228B1/de active Active
- 2008-06-09 TW TW097121399A patent/TWI461601B/zh active
-
2010
- 2010-01-13 US US12/686,532 patent/US20100175371A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
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See references of WO2009010336A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2171228B1 (de) | 2011-08-17 |
TW200907165A (en) | 2009-02-16 |
TWI461601B (zh) | 2014-11-21 |
DE102007032734A1 (de) | 2009-01-15 |
ES2370288T3 (es) | 2011-12-14 |
US20100175371A1 (en) | 2010-07-15 |
WO2009010336A1 (de) | 2009-01-22 |
JP2010533254A (ja) | 2010-10-21 |
ATE520867T1 (de) | 2011-09-15 |
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