EP3472441A1 - Partikelfilter für eine verbrennungskraftmaschine - Google Patents
Partikelfilter für eine verbrennungskraftmaschineInfo
- Publication number
- EP3472441A1 EP3472441A1 EP17729016.0A EP17729016A EP3472441A1 EP 3472441 A1 EP3472441 A1 EP 3472441A1 EP 17729016 A EP17729016 A EP 17729016A EP 3472441 A1 EP3472441 A1 EP 3472441A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- filter
- flow
- heating element
- particle filter
- 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
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
- F01N3/027—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 electric or magnetic heating means
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filter
-
- 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
-
- 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
- F01N3/0864—Oxygen
-
- 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
-
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/11—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for hybrid vehicles
Definitions
- the invention relates to a particle filter for an internal combustion engine according to the preamble of patent claim 1.
- Particle filter for internal combustion engines in particular for self-igniting
- the particle filter is characterized in particular by the fact that a plurality of channels are arranged side by side, in particular parallel to one another, the channels being mutually closed.
- the exhaust gas flowing in via a filter inlet flows through the particle filter in its
- Extending direction in that it passes from a channel opened at the filter inlet into a channel opened at the filter outlet via a porous wall arranged between these two channels.
- Solid particles of the exhaust gas are deposited in and / or on the wall. Since these particles reduce a free flow cross-section of the particulate filter and because the potential for excessive temperature increases in the particulate filter increases as the load increases due to exothermic soot burnup, these particles are to be removed from the particulate filter by a so-called regeneration, in other words by conversion of the soot particles.
- the patent EP 2 161 420 B1 is a particle filter for a
- Internal combustion engine can be removed, which is uncoated in areas of the channels in which predominantly solid particles accumulate.
- a coated portion and an uncoated portion are formed in the channels, wherein the uncoated portion of a channel adjacent to the coated portion of another channel is formed.
- Diesel engine formed internal combustion engine which has a coating for soot oxidation, the reaction temperature is below 500 ° C. This is done using preferred materials of the particulate filter, in the form of Reached alkaline earth metal compounds, an oxygen-storing substance and platinum, paladium or rhodium.
- the object of the present invention is to provide an improved particulate filter for an internal combustion engine. This object is achieved by a particulate filter for a
- a particulate filter according to the invention for an internal combustion engine has a filter body, wherein the filter body has a filter inlet which can be flowed through and a filter outlet which can be flowed through.
- the filter body comprises at least one first channel through which can flow, with a first end facing the filter inlet and a second end facing the filter outlet, and a second channel through which the filter inlet faces formed third end and facing the filter outlet formed fourth end.
- the second end and the third end are formed such that they can not be flowed through or flow through them to a certain extent, whereby the channels can be made into a flow-through channel section and a flow-through or in some way heavy
- permeable channel section are articulated.
- first channels are formed with obstructed or obstructed flow inlet at the filter inlet and second channels with obstructed or obstructed flow outlet at the filter outlet.
- the channel wall is formed soot particles of the exhaust gas depositable.
- an underflowable channel section is not necessarily a completely sealed and closed against any flow-through channel section to understand, but it is also a somewhat difficult to be flowed through channel section to understand -.
- a so-called diffusion-open channel section in particular oxygen molecules can penetrate this difficult to flow through the channel section.
- the first channel and / or the second channel has a heating element, wherein the heating element is arranged in the channel section of the channel which can not be flowed through.
- the arrangement of the heating element in the flow-through channel section has several advantages. For example, a flow through the particle filter due to the
- Heating element which has a flow resistance, not affected.
- Another advantage is the use of, with regard to the flow, unused areas of the particulate filter to see: an increase in the reaction temperature for burning off the soot particles can be achieved while maintaining the original Size of the particle filter. In other words, this means that an intended installation space of the particle filter is maintained and, with respect to the construction space, no constructive one
- the heating element is formed from a functional material which reacts exothermically when oxygen is stored. This means in other words that the heating element is quasi self-igniting.
- the advantage lies in the fact that it requires only the heating element itself, without, for example, as known from the prior art, an aid in the form of an ignition device, such as.
- the microwave generator to provide. It is merely the operation of the internal combustion engine to be adjusted so that due to a corresponding temperature of the exhaust gas and / or a corresponding composition of the exhaust gas, the exothermic reaction of the
- the heating element by means of a change of a
- Combustion air ratio of the exhaust gas for heat emission excitable This can be done by adding or reducing fuel or air
- Combustion air ratio of the exhaust gas can be changed.
- a so-called substoichiometric composition the one
- Combustion air ratio with a value less than 1 corresponds or one
- the heating element with the aid of a change of
- Combustion air ratio of the exhaust gas of a combustion air ratio with a value less than 1, to a combustion air ratio with a value greater than 1 can be energized for heat dissipation.
- This change in the combustion air ratio can be, for example, based on a load operation of the internal combustion engine at a low substoichiometric operation, for example.
- Such operation of the internal combustion engine can, for example, already by a downhill or a deceleration of a motor vehicle with the
- Heating element on an element cross section which corresponds to a cross section of the channel.
- the heating element in addition to its temperature-increasing function, be used for one-sided sealing of the channel.
- the heating element is formed at least on the basis of cerium oxide and / or cerium-zirconium mixed oxides. These oxides have, with appropriate nature and concentration, a pronounced oxygen storage capacity, which has a high
- the heating element contains precious metals such as, for example, palladium and / or rhodium, this also gives them a direct oxygen storage capacity, at least in a certain temperature range.
- the heating element of the first channel is formed of a first material and the heating element of the second channel is formed of a second material different from the first material.
- the particle filters of the prior art have, in principle, a comparatively low reaction rate of the burning off of the soot particles. This can have the consequence that, for example, due to a nearly simultaneous in all filter areas
- the highest temperature can be in the vicinity of the filter outlet of the particle filter. It is likely that even with z. B. 800 ° C, the burnup is relatively slow and so the released in the filter inlet heat of the burn is accumulated in the downstream areas, thus also in the area before the filter outlet, with the heat released there.
- the advantage is given to bring about a rise in temperature in the region of the filter inlet, which depends on the temperature increase in the
- Area of the filter outlet is different. It is advantageous to form the heating element in the region of the filter inlet of a first material, which only at present in the particulate filter deep and medium temperatures, up to, for example, about 800 ° C, heat
- particulate filters which are highly loaded, e.g. Particulate filters, which have a large amount of soot particles to heat them from the filter outlet. If the burn-up or the regeneration were initiated at the filter outlet, the heat released there would really be released and not imposed in the upstream areas as a "thermal burden.” Under certain boundary conditions, in particular if flow velocities are not too high, then the so-called
- the first material is designed for the reaction in a medium temperature range, and the second material for the reaction over another
- a further increase of an efficient regeneration can be brought about with the aid of a further heating element, if this is arranged in the flow-through channel section.
- the infiltrated channel section has a plug, wherein the heating element is designed to replace the plug completely or partially.
- Particulate filters according to the prior art have plugs which serve only the purpose of sealing the channel. They are massive formed and have a relatively large length. For example. Lengths of the plugs of approx. 7 mm are usual for particle filters used or provided in the gasoline engine sector. A mass fraction of the plug is in the clogged filter inlet or
- Filter outlet areas at about 60 - 70% Therefore, a complete or partial replacement of these plugs by a heating element made of a material with a high proportion of a storage component with high oxidation heat, to a sharp increase in temperature at a change in the operation of the internal combustion engine from rich operation to lean operation, for example in conjunction with a fuel cut.
- a particularly efficient particle filter is thus realized.
- Fig. 1 in a diagram a profile of the combustion air ratio ⁇ of exhaust gas and in a corresponding t-T diagram temperatures in one
- Particle filter according to the prior art and in a particulate filter according to the invention temperature profiles at different positions of the particulate filter, determined by means of a simulation calculation
- FIG. 2 shows an xT diagram of temperature profiles at different times in the particle filter according to the prior art and the particle filter according to the invention
- FIG. 3 shows a schematic representation of a particle filter according to the invention
- FIG Fig. 4 is an Ellingham diagram of the elements palladium and rhodium and their oxides.
- An abrupt increase in temperature in a particulate filter 1 according to the invention is associated with an exothermic reaction of a material which has a high oxygen storage content at a change of operation of a non-illustrated
- an internal combustion engine supplied air-fuel mixture is changed in their proportions.
- a so-called rich operation which has a combustion air ratio ⁇ of the air-fuel mixture with a value less than 1
- a lean operation which has a combustion air ratio ⁇ of the air-fuel mixture with a value greater than 1.
- exhaust gas of the internal combustion engine which flows through the particle filter 1, an increased proportion of oxygen, which triggers the exothermic reaction.
- a simultaneous fuel cut increases the oxygen content significantly, which also a significant increase in the temperature in the particulate filter 1 can be achieved.
- Fig. 1 shows in the lower portion in a t- diagram a curve LI a
- Combustion air ratio ⁇ over the time t before a known particle filter.
- a sudden change in the combustion air ratio ⁇ from a value of approximately 0.95 here to a value significantly above 1 indicates a point in time
- Temperature profiles of a particulate filter 1 according to the prior art and in the middle section of FIG. 1 are temperature profiles of a particulate filter 1 according to the invention shown.
- the temperature profile TO corresponds to a so-called inlet temperature, ie the gas temperature before OPF.
- the particle filter 1 according to the invention which is formed schematically according to FIG. 3, has flow-through channel sections 13 and channel sections 14 which can be passed through.
- the temperature profiles T 1 and T 3 show a thermal behavior of the particle filter 1 in a plane near a filter inlet 3 or near a filter outlet 4 of FIG.
- Particulate filter 1 ie in planes that cut through also unbearable channel sections 14.
- the temperature profile T2 shows the thermal behavior of the
- Particulate filter 1 near a center plane of the particulate filter 1, which is formed centrally between the planes of the filter inlet 3 and the filter outlet 4.
- the temperatures Tl, T2, T3 in the particle filter 1 according to the prior art follow with a time delay, due to the heat capacity of the particulate filter 1 itself, the cooling inlet temperature TO.
- the temperatures Tl, T2, T3 in the particulate filter 1 according to the invention show different courses.
- the temperatures Tl, T3 of the planes with channel sections 14 which can be flowed through rise immediately after the change from the (slightly) rich to the lean mixture only imperceptibly decelerates violently, in this example by about 75 ° C.
- these temperatures T 1, T 3 will also follow in time with the ever-decreasing inlet temperature TO.
- FIG. 2 shows in an xT diagram temperature profiles at different times t0, t1, t2, t3, t4 before and after a change from a (slightly) rich load operation of the internal combustion engine to coasting with fuel cutoff in the direction of the flow axis of the particle filter 1 2, the temperature profiles t0, t1, t2, t3, t4 in the particle filter 1 according to the prior art and in the lower portion of FIG. 2 the temperature profiles t0, t1, t2, t3, t4 in FIG
- the temperature curve tO corresponds to a course before the operating changeover.
- the temperature profiles t1, t2, t3, t4 are temperature profiles after the changeover of operation, wherein the temperature profile tl is 20.2 sec, the temperature profile t2 is 21.2 sec, the temperature profile t3 is 22.2 sec and the temperature profile t4 is 23.2 sec
- the particulate filter 1 according to the invention for the not shown
- Internal combustion engine is formed in a schematic representation of FIG. 3.
- the internal combustion engine which is embodied in the form of a direct-injection gasoline engine, exhaust gas containing soot particles is produced as a result of combustion of the air-fuel mixture.
- the particle filter 1 has a filter body 2 with a filter inlet 3 which can be flowed through and a filter outlet 4 through which it can flow.
- a filter inlet 3 which can be flowed through and a filter outlet 4 through which it can flow.
- a plurality of through-flow channels 5, 6 are formed in the filter body 2.
- the channels 5, 6 are formed along a longitudinal axis L extending, juxtaposed, wherein a
- the channels 5, 6 have alternately on the filter inlet 3 and a closed at the filter outlet 4 end.
- a first channel 5 and a second channel 6 the plurality of channels and the operation of the particulate filter 1 described.
- the first channel 5 has a first end 7 facing the filter inlet 3 and a second end 8 facing the filter outlet 4.
- the second channel 6 has a third end 9 facing the filter inlet 3 and a second end 9 facing the filter inlet 3
- the second end 8 and the third end 9 are formed umströmströmbar.
- the channel wall 11 is formed porous permeable to flow, wherein the
- Soot particles of the exhaust gas flowing through the channel wall 11 on the channel wall 11 or - deposit The exhaust gas flows through the particle filter 1 in the direction of
- the channels 5, 6 are closed at their unbroken ends 8, 9 by means of a plug 12.
- that means that the channels 5, 6 each have a freely flow-through channel section 13 and a channel section 14 which can be flowed through.
- the plug 12 has an element cross-section QE which corresponds to a cross-section Q of the channel 5; 6 corresponds. Since in the illustrated embodiment, the channels 5, 6 have an identical cross-section, the element cross-section QE also corresponds to a cross-section Q of the second channel 6. In a non-illustrated
- the channels 5, 6 different cross-sections Q on.
- the stopper 12 has an element cross-section QE designed to be adapted to the cross-section Q of the corresponding channel 5, 6.
- the element cross-section QE of the plug 12 is constant over a length L of the plug 12 in the illustrated embodiment.
- the element cross section QE could change over its length L. For example, in one does not specify
- the illustrated embodiment of the plug 12 has a frusto-conical shape with a 5 on the length LE changing element cross-section QE, if the channel 5, 6 has a conical shape.
- the soot particles accumulate in the particle filter 1, wherein an effective flow cross section of the particle filter 1 reduces over time
- this has at least one heating element 15, which is arranged in the channel section 14 which can be flowed through.
- the heating element 20 15 consists of a functional material which reacts exothermically in the event of an excess of air, in other words gives off heat and thus leads to an increase in temperature in the particle filter 1.
- the heating element 15 is in the form of the plug 12 and replaces it. Likewise, the heating element 15 could also be formed as part of the plug 12. It is formed from a material which is formed triggering an oxygen storage an exothermic reaction. In other words, that means that
- Heating element 15 automatically releases heat due to its molecular structure, if an oxygen storage is formed. That means there is a
- the material is a solid which may be present in at least two modifications. In rich operation of the internal combustion engine, it is at least partially in a reduced modification, the first modification before and goes in a lean operation of the internal combustion engine in an oxidized modification, the second modification.
- This solid also called functional material, is preferably a mixed oxide of cerium and zirconium oxides with optionally further substances, such as, for example, metals and / or earth metals, lanthanum, presodymium, ytterium, and alumina.
- the "less noble" noble metals palladium and rhodium which also directly have an oxygen storage capacity, but at higher temperatures, for example about 900 ° C., they do not oxidise, thus do not store, and retain their noble metallic state irrelevant, whether it is an exhaust gas with a rich composition corresponding to the rich operation or an exhaust gas with a lean composition corresponding to the lean operation of the
- Rhodium would gem.
- Fig. 4 can form rhodium oxide up to about 880 ° C and thus can behave subdued up to this temperature.
- the functional material for the exothermic reaction may be formed in different temperature ranges.
- a first material has a composition having a reducing / oxidizing ability in a low and medium temperature range up to about 700 ° C, for example, palladium.
- a second material has a composition having an exothermic reaction additional in a high temperature range, such as TWC (three-way-catalyst) standard storage materials.
- TWC three-way-catalyst
- the first material is designed for the reaction at low and medium temperatures present in the particle filter 1
- the second material is designed to react over all the temperatures present in the particle filter 1.
- all plugs 12 can be replaced by a respective heating element 15, whereby the regeneration is improved.
- a particle filter 1 with a plurality of heating elements 15, which are formed from a single material and / or a material mix are also targeted.
- Positioning of the heating elements 15, on the inlet side or on the outlet side, can also be selected as a function of an installation situation of the particle filter 1, close to the engine or remote from the engine.
- all plugs 12 of the particulate filter 1 are replaced by a respective heating element 15.
- a further embodiment of the particle filter 1 according to the invention not shown in greater detail, has at the second end 8 the heating element 15 formed from the first material and at the third end 9 the heating element 15 formed from the second material.
- Another not shown embodiment of the particulate filter according to the invention has at second ends and third ends, which are located farther from the central longitudinal axis, heating elements made of a first material. At the second ends and third ends, which are closer to the central longitudinal axis, it has heating elements made of a second material or no heating elements.
- a further heating element 15 may be arranged. This could be formed from a further, different from the first material and the second material material. Ie. in other words, it is made of another material having an oxygen storage ability different from the first material and the second material. LIST OF REFERENCE NUMBERS
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016110527.9A DE102016110527A1 (de) | 2016-06-08 | 2016-06-08 | Partikelfilter für eine Verbrennungskraftmaschine |
| PCT/EP2017/025162 WO2017211468A1 (de) | 2016-06-08 | 2017-06-07 | Partikelfilter für eine verbrennungskraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3472441A1 true EP3472441A1 (de) | 2019-04-24 |
| EP3472441B1 EP3472441B1 (de) | 2020-12-30 |
Family
ID=59034714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17729016.0A Active EP3472441B1 (de) | 2016-06-08 | 2017-06-07 | Partikelfilter für eine verbrennungskraftmaschine |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20190153920A1 (de) |
| EP (1) | EP3472441B1 (de) |
| JP (1) | JP6720351B2 (de) |
| KR (1) | KR102139222B1 (de) |
| CN (1) | CN109312648B (de) |
| DE (1) | DE102016110527A1 (de) |
| WO (1) | WO2017211468A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7871754B2 (ja) * | 2023-07-20 | 2026-06-09 | トヨタ自動車株式会社 | 車両の制御装置、及び車両の制御プログラム |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10003816A1 (de) * | 2000-01-28 | 2001-08-02 | Opel Adam Ag | Regenerierbarer Partikelfilter zum Entfernen von Rußpartikeln aus Abgasen |
| JP3521880B2 (ja) * | 2000-07-21 | 2004-04-26 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
| EP1250952A1 (de) | 2001-04-18 | 2002-10-23 | OMG AG & Co. KG | Katalysator sowie Filter und Verfahren zur Beseitigung von Russpartikeln aus dem Abgas eines Dieselmotors |
| DE10151425A1 (de) * | 2001-10-18 | 2003-04-30 | Opel Adam Ag | Partikelfilter zum Reinigen von motorischen Abgasen |
| US7691339B2 (en) | 2002-11-26 | 2010-04-06 | Gm Global Technology Operations, Inc. | Catalyst temperature control via microwave-induced particle oxidation |
| JP4767491B2 (ja) * | 2003-12-11 | 2011-09-07 | 日本碍子株式会社 | ハニカム構造体 |
| US7735313B2 (en) * | 2005-01-31 | 2010-06-15 | Isuzu Motors Limited | Method of raising temperature in exhaust-gas purifier and exhaust-gas purification system |
| JP3885813B2 (ja) * | 2005-01-31 | 2007-02-28 | いすゞ自動車株式会社 | 排気ガス浄化装置の昇温方法及び排気ガス浄化システム |
| DE102006032886A1 (de) | 2006-07-15 | 2008-01-17 | Daimler Ag | Partikelabscheider und Verfahren zur Regeneration eines Partikelabscheiders |
| US7967887B1 (en) * | 2006-11-03 | 2011-06-28 | Cummins Filtration Ip, Inc. | Exhaust aftertreatment filter with reduced maximum temperature |
| US7931715B2 (en) * | 2007-02-12 | 2011-04-26 | Gm Global Technology Operations, Inc. | DPF heater attachment mechanisms |
| US8118908B2 (en) * | 2008-03-17 | 2012-02-21 | GM Global Technology Operations LLC | Electrically heated particulate matter filter with recessed inlet end plugs |
| KR101028548B1 (ko) | 2008-09-05 | 2011-04-11 | 기아자동차주식회사 | 배기가스 정화장치 |
| US20110120090A1 (en) * | 2009-11-25 | 2011-05-26 | Sorensen Jr Charles Mitchel | Processes And Devices For Regenerating Gasoline Particulate Filters |
| KR20120095747A (ko) * | 2011-02-21 | 2012-08-29 | 한국에너지기술연구원 | 다기능성 배기가스 정화필터 및 이를 이용한 배기가스 정화장치 |
| JP2012219732A (ja) * | 2011-04-11 | 2012-11-12 | Toyota Motor Corp | Pmフィルタ及びpmフィルタの再生方法 |
| RU2017137625A (ru) * | 2015-03-30 | 2019-04-30 | Басф Корпорейшн | Катализированные фильтры с концевым покрытием для выхлопного газа двигателя, работающего на обедненной топливной смеси |
| GB2546164A (en) * | 2015-09-30 | 2017-07-12 | Johnson Matthey Plc | Gasoline particulate filter |
-
2016
- 2016-06-08 DE DE102016110527.9A patent/DE102016110527A1/de active Pending
-
2017
- 2017-06-07 EP EP17729016.0A patent/EP3472441B1/de active Active
- 2017-06-07 JP JP2018564194A patent/JP6720351B2/ja active Active
- 2017-06-07 WO PCT/EP2017/025162 patent/WO2017211468A1/de not_active Ceased
- 2017-06-07 CN CN201780036131.7A patent/CN109312648B/zh active Active
- 2017-06-07 KR KR1020197000134A patent/KR102139222B1/ko active Active
- 2017-06-07 US US16/308,583 patent/US20190153920A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN109312648B (zh) | 2021-01-29 |
| EP3472441B1 (de) | 2020-12-30 |
| WO2017211468A1 (de) | 2017-12-14 |
| US20190153920A1 (en) | 2019-05-23 |
| CN109312648A (zh) | 2019-02-05 |
| KR102139222B1 (ko) | 2020-07-29 |
| JP2019523842A (ja) | 2019-08-29 |
| KR20190015480A (ko) | 2019-02-13 |
| DE102016110527A1 (de) | 2017-12-14 |
| JP6720351B2 (ja) | 2020-07-08 |
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