EP4544159A1 - Kraftfahrzeug mit einer verbrennungskraftmaschine und mit einer abgasnachbehandlungsvorrichtung, abgasnachbehandlungsvorrichtung für eine verbrennungskraftmaschine und partikelfilter - Google Patents
Kraftfahrzeug mit einer verbrennungskraftmaschine und mit einer abgasnachbehandlungsvorrichtung, abgasnachbehandlungsvorrichtung für eine verbrennungskraftmaschine und partikelfilterInfo
- Publication number
- EP4544159A1 EP4544159A1 EP23728070.6A EP23728070A EP4544159A1 EP 4544159 A1 EP4544159 A1 EP 4544159A1 EP 23728070 A EP23728070 A EP 23728070A EP 4544159 A1 EP4544159 A1 EP 4544159A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter body
- liquid
- filter
- combustion engine
- internal combustion
- 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.)
- Pending
Links
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
- F01N3/033—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
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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
- F01N3/005—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for draining or otherwise eliminating condensates or moisture accumulating in the apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/523—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with means for maintaining spacing between the pleats or folds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9431—Processes characterised by a specific device
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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
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/011—Exhaust or silencing apparatus characterised by constructional features having two or more purifying devices arranged in parallel
-
- 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
- F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—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
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
Definitions
- the invention relates to a motor vehicle with an internal combustion engine and with an exhaust gas aftertreatment device, which has a particle filter, with a particle filter housing and with a filter body arrangement, which is designed to separate particles from an exhaust gas stream which can be ejected by the internal combustion engine and flows through the filter body arrangement when used as intended is accommodated in the particle filter housing. Further aspects of the invention relate to an exhaust gas aftertreatment device for an internal combustion engine and a particle filter.
- a gasoline particle filter for example, can have a porous ceramic stone (ceramic stone), whose porous surface can ensure that soot particles are reliably filtered from the exhaust gas and thus meet current emissions regulations worldwide.
- FE filtration efficiency
- a filter for filtering an exhaust gas from an internal combustion engine with an inflow side and an outflow side is known.
- the filter is formed from a plurality of fleece layers, the ends of which have a gas-impermeable end region formed by a smooth strip strip on the inflow side and the outflow side.
- the fleece layers have, at least on one side, a corrugated strip strip which is arranged along the smooth strip strip. Two mutually adjacent fleece layers are spaced apart from one another on the inflow side or the outflow side. Two smooth strip strips directly adjacent to one another are mutually connected to one another in a gas-tight manner on the inflow side and the outflow side.
- the object of the present invention is to provide a motor vehicle with an internal combustion engine in which fail-safe and effective exhaust gas aftertreatment can take place. It is also an object of the invention to provide a corresponding exhaust gas aftertreatment device for an internal combustion engine and a particle filter.
- a first aspect of the invention relates to a motor vehicle with an internal combustion engine and with an exhaust gas aftertreatment device, which has a particle filter, with a particle filter housing and with a filter body arrangement, which is used to separate particles from a filter body arrangement which can be ejected by means of the internal combustion engine and flows through the filter body arrangement when used as intended Exhaust gas flow is formed and accommodated in the particle filter housing.
- the filter body arrangement can therefore be used overall to filter particles from the exhaust gas stream passing through the filter body arrangement during operation of the internal combustion engine when used as intended, in particular during exhaust gas aftertreatment using the filter body arrangement.
- the filter body arrangement has filter body elements which are separated from one another by means of at least one liquid-tight, in particular waterproof, layer which is oriented at least substantially in the longitudinal direction of the particle filter.
- the liquid-tight layer which can also be referred to as a separating layer, can prevent the entire filter body arrangement from being undesirably saturated with liquid, in particular water, if there is liquid in the exhaust gas aftertreatment device that comes into contact with the filter body arrangement .
- the undesirable suction can lead to an impermissibly high exhaust gas back pressure when the exhaust gas flow flows through the filter body arrangement, which leads to disruptions in the operation of the internal combustion engine can come.
- the filter body elements can also be completely separated from one another in the transverse direction of extension, in that the at least one liquid-tight layer preferably extends between two opposing housing areas of the particle filter housing and is connected to these opposing housing areas.
- the layer can in particular be oriented parallel to a plane which is spanned by the longitudinal and transverse extension directions of the particle filter.
- the longitudinal extension direction can preferably correspond to a flow direction of the exhaust gas stream. In the direction of flow, the exhaust gas flow can pass through the filter body elements when the particle filter is used as intended.
- the invention is based on the knowledge that the filter body elements, which are usually made of a ceramic material, have fine structures, in particular pores, which enable the particles to be filtered out of the exhaust gas stream, but also promote any suction of one of the filter body elements, in particular due to a capillary effect, through which liquid can be conveyed through the filter body element against the direction of gravity. If there is a sufficiently large amount of liquid, in particular water, which is in contact with the filter body element, the entire filter body element can become saturated in the worst case scenario. If the particle filter has a single, coherent filter body element, the filter body arrangement can become completely moistened. As a liquid, water is a by-product of the combustion of a fuel-air mixture during fired operation of the internal combustion engine.
- a water-soaked filter body element which - if the particle filter is designed as an Otto particle filter, can also be referred to as an OPF stone - has several serious disadvantages.
- OPF stone When soaked in liquid water, the exhaust gas back pressure is significantly increased when the internal combustion engine is operated via the fully sucked filter body element, which can lead to apparent errors in various diagnoses relating to the particle filter during operation of the internal combustion engine. At temperatures below the freezing point, i.e.
- the water absorbed in the filter body element can freeze and, as a result, a significant increase in the exhaust gas counterpressure can occur, which can lead to a complete closure of the exhaust gas aftertreatment device. This results in the vehicle breaking down.
- the particle filter can also be damaged by the extreme exhaust back pressure.
- the invention starts here, whereby the liquid-tight layer can prevent all of the filter body elements from being soaked, so that at least one of the filter body elements is prevented from being soaked through the layer and the functionality of the exhaust gas aftertreatment device is ensured even when there is liquid in the exhaust gas aftertreatment device and at temperatures below the freezing point can. This means that fail-safe and effective exhaust gas aftertreatment can take place even under such adverse conditions.
- the at least one liquid-tight layer is oriented at least essentially perpendicular to the direction of gravity.
- the layer thereby prevents liquid columns, in particular water columns, which arise in the exhaust gas aftertreatment device from undesirably penetrating all filter body elements without the layer taking up an unnecessarily large amount of installation space within the particle filter housing.
- the at least one layer can be assigned to the filter body arrangement and therefore also be a layer of the particle filter.
- the expression “oriented at least substantially perpendicular to the effective direction of gravity” is to be understood as meaning that the at least one layer can preferably lie in a plane whose normal vector can be oriented parallel to the effective direction of gravity.
- the expression “oriented at least essentially perpendicular to the direction of gravity” can also be understood to mean that the normal vector and the direction of gravity enclose an angle a, where a is, for example, one of the angle values 1°, 2°, 3 °, 4°, 5°, 6°, 7°, 8°, 9°, 10°.
- the filter body arrangement has a plurality of filter body elements, two of which each Filter body elements are separated from one another by at least one additional layer, which is also liquid-tight and oriented parallel to the at least one liquid-tight layer.
- first filter body element liquid-tight layer - second filter body element - first additional layer - third filter body element - second additional layer - fourth filter body element.
- the second additional layer is, for example, geodetically above the liquid level
- the fourth filter body element becomes full
- the three geodetically arranged above the fourth filter body element are filled
- Filter body elements first, second and third filter body elements
- the at least one liquid-tight layer and the filter body elements are formed from materials that are different from one another. This facilitates, for example, a liquid-tight connection between the particle filter housing and the liquid-tight layer.
- the layer and the particle filter housing can be formed from the same metallic material and connected to one another, for example in a materially bonded manner.
- the at least one liquid-tight layer is formed from a material with a greater thermal conductivity than the material of the filter body elements. This promotes rapid heat distribution along the filter body arrangement, which can reduce thermal voltages.
- the material of the at least one liquid-tight layer is metallic. This can advantageously bring about faster heat distribution within the particle filter housing and along the filter body elements.
- the liquid-tight layer can therefore be formed from a metallic material, which can contribute to better heating of the particle filter during operation of the internal combustion engine through heat conduction along the layer.
- the particle filter has at least one projection, which is connected to the liquid-tight layer and is inserted into at least one of the filter body elements in the direction of gravity.
- This optional embodiment allows faster heat transfer from the layer to at least one filter body element of the filter body arrangement that is geodetically lower than the liquid-tight layer.
- the at least one projection can be inserted downwards into one of the filter body elements in the direction of gravity.
- the at least one projection can, for example, be connected in one piece to the liquid-tight layer.
- the filter body element which is saturated with water and frozen and is arranged geodetically lower than the liquid-tight layer, at ambient temperatures below the freezing point of water, as soon as the internal combustion engine is fired, i.e. with the combustion of a fuel-air mixture. is operated.
- the at least one projection can be designed as a rib, which can be aligned in the longitudinal direction, preferably in the flow direction of the exhaust gas stream.
- the at least one liquid-tight layer and the filter body elements are formed from the same material and the at least one liquid-tight layer has a lower porosity and/or a higher density than the filter body elements.
- the advantage here is that the liquid-tight layer and the filter body elements can therefore have at least similar thermal conductivity, which means that any undesirably high thermal voltages between the layer and the filter body elements can be avoided when the particle filter is heated up during operation.
- the layer can be more compacted and additionally or alternatively have fewer pores than the filter body elements.
- a second aspect of the invention relates to an exhaust gas aftertreatment device with at least one particle filter according to the first aspect of the invention. With this exhaust gas aftertreatment device, a particularly fail-safe and effective exhaust gas aftertreatment can take place.
- a third aspect of the invention relates to a particle filter for a motor vehicle according to the first aspect of the invention and/or for an exhaust gas aftertreatment device according to the second aspect of the invention.
- exhaust gas aftertreatment can be carried out in a fail-safe and effective manner, even if liquid penetrates into the particle filter.
- FIG. 1 shows a schematic representation of a motor vehicle with an internal combustion engine which emits an exhaust gas stream which is guided through an exhaust gas aftertreatment device, the particle filter of which has at least one liquid-tight layer which separates different filter body elements of a filter body arrangement of the particle filter from one another.
- Fig. 1 shows a motor vehicle K with an internal combustion engine 100 and with an exhaust gas aftertreatment device 10, which has a particle filter 20.
- the exhaust gas aftertreatment device 10 can also include further exhaust gas aftertreatment units, for example at least one catalytic converter, which can be connected downstream or upstream of the particle filter.
- particle filters 20 are not further exhaust gas aftertreatment units, such as the catalytic converter shown.
- the particle filter 20 has a particle filter housing 30 and a filter body arrangement 40.
- the filter body arrangement 40 is accommodated in the particle filter housing 30 and is used to separate particles from an exhaust gas stream 12 that can be ejected by means of the internal combustion engine 100 and flows through the filter body arrangement 40 when it is used as intended.
- the exhaust gas stream 12 is illustrated here as an example by an arrow which is shown in Longitudinal direction x of the particle filter 20 is aligned. For this reason, the arrow illustrating the exhaust gas stream 12 also stands for this longitudinal extension direction x.
- a transverse extension direction y of the particle filter 20 runs perpendicular to the plane of the drawing and thus perpendicular to the longitudinal extension direction x.
- the filter body arrangement 40 can have a plurality of filter body elements, of which a first filter body element 42 and a second filter body element 44 are shown as examples. Based on Fig. 1 it can be seen that the two filter body elements 42, 44 are separated from one another by a liquid-tight, in particular waterproof, layer 60 oriented in the longitudinal direction x of the particle filter 20.
- the liquid-tight layer 60 which is oriented perpendicular to the effective direction g of gravity, completely separates the first filter body element 42 and the second filter body element 44 both in the longitudinal direction x and in the transverse direction y.
- the filter body arrangement 40 can have a plurality of filter body elements 42, 44, of which two of the filter body elements 42, 44 are separated from one another by at least one additional layer 62, 64, which is also liquid-tight and oriented parallel to the at least one liquid-tight layer 60.
- Fig. 1 indicates the first additional layer 62 and the second additional layer 64 in dashed lines.
- the waterproof layer 60 and the likewise waterproof additional layers 62, 64 each form a separating layer for different liquid levels h of a liquid 14 (here: water).
- the liquid-tight layer 60 and the additional layers 62, 64 can be formed from a material with a greater thermal conductivity compared to the material of the filter body elements 42, 44. Accordingly, the liquid-tight layer 60, the additional layers 62, 64 and the filter body elements 42, 44 can be formed from a ceramic material and in particular be designed as a ceramic stone.
- the Liquid-tight layer 60 and the additional layers 62, 64 can have a lower porosity and, additionally or alternatively, a higher density than the filter body elements 42, 44.
- the material of the liquid-tight layer 60 and the additional layers 62, 64 can also be metallic, whereby improved thermal conductivity within the liquid-tight layer 60 and the additional layers 62, 64 is achieved.
- the particle filter 20 has a plurality of projections 22, which is connected, for example, to the liquid-tight layer 60 and is inserted into at least one of the filter body elements 42, 44 in the effective direction g of gravity.
- the invention addresses the problem that a water-soaked ceramic stone of a particle filter has several serious disadvantages.
- the exhaust gas back pressure is significantly increased when the internal combustion engine is operating, which can lead to apparent errors in various particle filter diagnoses.
- the exhaust gas back pressure increases massively until, in the worst case scenario, the exhaust gas aftertreatment device can be completely closed. This can result in the vehicle breaking down.
- the particle filter can also be damaged by the extreme back pressure.
- the filter body arrangement for example at least one of the ceramic stones (filter body elements)
- the particle filter is no longer completely affected by the negative effects of water described above.
- the soaked part can still freeze, but this can then be compensated for by the much larger dry area of the stone, thereby avoiding breakdowns and emissions deterioration.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022115395.9A DE102022115395A1 (de) | 2022-06-21 | 2022-06-21 | Kraftfahrzeug mit einer Verbrennungskraftmaschine und mit einer Abgasnachbehandlungsvorrichtung, Abgasnachbehandlungsvorrichtung für eine Verbrennungskraftmaschine und Partikelfilter |
| PCT/EP2023/064048 WO2023247136A1 (de) | 2022-06-21 | 2023-05-25 | Kraftfahrzeug mit einer verbrennungskraftmaschine und mit einer abgasnachbehandlungsvorrichtung, abgasnachbehandlungsvorrichtung für eine verbrennungskraftmaschine und partikelfilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4544159A1 true EP4544159A1 (de) | 2025-04-30 |
Family
ID=86657473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23728070.6A Pending EP4544159A1 (de) | 2022-06-21 | 2023-05-25 | Kraftfahrzeug mit einer verbrennungskraftmaschine und mit einer abgasnachbehandlungsvorrichtung, abgasnachbehandlungsvorrichtung für eine verbrennungskraftmaschine und partikelfilter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250207519A1 (de) |
| EP (1) | EP4544159A1 (de) |
| JP (1) | JP2025522233A (de) |
| CN (1) | CN118922618A (de) |
| DE (1) | DE102022115395A1 (de) |
| WO (1) | WO2023247136A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60033977T2 (de) | 1999-09-29 | 2007-12-20 | Ibiden Co., Ltd., Ogaki | Wabenförmiger Filter und Anordnung von keramischen Filtern |
| US7332016B2 (en) * | 2004-07-30 | 2008-02-19 | Caterpillar Inc. | Particulate trap with selective blocking element |
| DE102008038736A1 (de) | 2008-08-12 | 2010-02-18 | Man Nutzfahrzeuge Aktiengesellschaft | Partikelabscheider, insbesondere Partikelfilter, zur Abscheidung von Partikeln aus dem Abgasstrom einer Brennkraftmaschine |
| DE102008063809B4 (de) * | 2008-12-19 | 2011-05-12 | Hjs Emission Technology Gmbh & Co. Kg | Abgasreinigungsanlage sowie Verfahren zum Betrieb einer Abgasreinigungsanlage |
| US20160040579A1 (en) * | 2014-08-06 | 2016-02-11 | GM Global Technology Operations LLC | Particulate filter and method for control |
| DE102018216841B4 (de) | 2018-10-01 | 2020-06-04 | Continental Automotive Gmbh | Partikelfilter |
-
2022
- 2022-06-21 DE DE102022115395.9A patent/DE102022115395A1/de active Pending
-
2023
- 2023-05-25 EP EP23728070.6A patent/EP4544159A1/de active Pending
- 2023-05-25 WO PCT/EP2023/064048 patent/WO2023247136A1/de not_active Ceased
- 2023-05-25 JP JP2024570716A patent/JP2025522233A/ja active Pending
- 2023-05-25 US US18/847,573 patent/US20250207519A1/en active Pending
- 2023-05-25 CN CN202380028885.3A patent/CN118922618A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023247136A1 (de) | 2023-12-28 |
| DE102022115395A1 (de) | 2023-12-21 |
| US20250207519A1 (en) | 2025-06-26 |
| JP2025522233A (ja) | 2025-07-14 |
| CN118922618A (zh) | 2024-11-08 |
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