WO2005113113A1 - Filtereinrichtung, insbesondere für ein abgassystem einer brennkraftmaschine - Google Patents
Filtereinrichtung, insbesondere für ein abgassystem einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2005113113A1 WO2005113113A1 PCT/EP2005/051814 EP2005051814W WO2005113113A1 WO 2005113113 A1 WO2005113113 A1 WO 2005113113A1 EP 2005051814 W EP2005051814 W EP 2005051814W WO 2005113113 A1 WO2005113113 A1 WO 2005113113A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- filter device
- elevations
- wall
- wave
- Prior art date
Links
Classifications
-
- 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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/106—Ring-shaped filtering elements
-
- 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
- B01D46/522—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with specific folds, e.g. having different lengths
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/80—Chemical processes for the removal of the retained particles, e.g. by burning
- B01D46/84—Chemical processes for the removal of the retained particles, e.g. by burning by heating only
-
- 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
Definitions
- Filter device in particular for an exhaust system of an internal combustion engine
- the invention relates to a filter device, in particular for an exhaust gas system of an internal combustion engine, with a filter structure which comprises at least one filter wall made of an open-pore material, on the upstream surface of which particles filtered out are separated.
- a filter device of the type mentioned is known from DE 101 28 936 AI.
- the filter device shown there is a particle filter for an exhaust system of a diesel internal combustion engine.
- the filter walls in the known filter device are made of sintered metal and arranged so that wedge-shaped filter pockets are formed.
- Filter bags point against the flow direction of the exhaust gas, the rear narrow side of a filter bag seen in the flow direction is open.
- the filter bags are arranged side by side in such a way that an overall rotationally symmetrical ring-like filter structure is formed. This occurs in operation Exhaust gas through the overall flat filter walls of the filter bags, particles being separated on the upstream surface of the respective filter wall.
- the filter walls are made of sintered metal, which forms a porous filtration material.
- the sintered metal filter walls are held in a supporting structure made of a solid metal.
- the soot particles deposited over time on the upstream surface of the filter wall lead to a reduction in the permeability of the filter wall and consequently to an increase in the pressure drop which occurs when the gas stream passes through the filter wall.
- the so-called "exhaust gas back pressure" increases accordingly. If this exceeds a certain value, the filter is regenerated by burning the deposited soot particles.
- the temperature of the exhaust gas, which is passed through the filter device is increased, which in turn is brought about by the injection of additional fuel.
- the object of the present invention is to reduce the additional fuel requirement for the regeneration of the filter device.
- the upstream surface is larger compared to conventional filter devices.
- a larger amount of particles can be deposited there without causing an inadmissible increase in the pressure drop when flowing through the filter wall.
- the filter device according to the invention has to be regenerated less frequently than conventional filter devices, which lowers the overall fuel consumption required for the regeneration.
- a major difference from the previous filter devices is that this reduction in fuel consumption is possible without increasing the overall dimensions of the filter device.
- the increase in the area available for the deposition of the particles is brought about solely or at least essentially by the uneven design of the surface.
- the upstream surface has unevenness and thus a different slope locally than a plane in which the wall lies as a whole.
- This can be achieved in a simple manner, in particular in the case of sintered metal structures, by appropriately shaping the green compact.
- the surface has wave-like elevations at least in some areas.
- the slope of the surface is only different in one direction from the slope of the plane in which the wall lies overall, whereas in a direction orthogonal to this it also in the uneven areas of the slope of the plane in which the wall lies overall , corresponds.
- Such a surface shape can be produced, in particular in the case of a filter wall, from a sintered material without great expense.
- the cost is further reduced if the wave-like elevations have a triangular and / or sinusoidal cross section.
- Elevations are approximately between 1 and 3, more preferably approximately between 1 and 1.5. At a ratio between 1 and 1.5 there will be a 50% increase in the amount available for the deposition of filtered particles
- the ratio between a period and an amplitude of the elevations is approximately between 1 and 5.6, more preferably between 1 and 3.7, even more preferably between 1 and 2.
- 6 still achieves a 25% increase in the effective surface, with a value of 3.7 even an approximately 50% increase, and with a value of 2 even more than a doubling.
- the average thickness of the wall is approximately equal to the thickness of a wall with a flat surface and the same filtration capacity, the larger surface area and consequently the lower fuel consumption are achieved without the need for an increased use of materials and without the filter device according to the invention weighing more than one conventional filter device. This also reduces manufacturing costs due to the reduced use of materials.
- At least the upstream surface of the filter wall has a catalytic coating.
- the large surface area increases the catalytic effect, for example when the filter device is regenerated.
- Figure 1 is a schematic representation of an internal combustion engine with a filter device
- FIG. 2 shows a perspective illustration of the filter device from FIG. 1 with a plurality of filter pockets which are delimited by filter walls;
- FIG. 3 shows a detail of the filter device of Figure 2;
- Figure 4 is a schematic representation of a first embodiment of an upstream surface of a filter wall of Figure 2;
- Figure 5 shows a representation similar to Figure 4 of a second embodiment
- FIG. 6 is an illustration similar to Figure 4 of a third embodiment
- FIG. 7 shows a representation similar to FIG. 4 of a fourth embodiment
- FIG. 8 shows a representation similar to FIG. 4 of a fifth embodiment
- FIG. 9 is a diagram from which the ratio of the surface of FIG. 5 to a flat surface is plotted for different amplitudes and periods; and 30
- Figure 10 is a diagram similar to Figure 9 for the surface shown in Figure 4.
- an internal combustion engine bears the reference number 10.
- the exhaust gases are discharged via an exhaust pipe 12, in which a filter device 14 is arranged. With this, soot particles are filtered out of the exhaust gas flowing in the exhaust pipe 12. This is particularly necessary for diesel internal combustion engines in order to comply with legal regulations.
- the filter device 14 comprises a cylindrical housing 16, in which a filter structure 18, which is rotationally symmetrical in the present exemplary embodiment, is also arranged overall.
- This comprises a multiplicity of wedge-shaped filter bags, only one of which is provided with the reference number 20 in FIG. This filter bag and an adjacent filter bag are shown again enlarged in FIG.
- Each of the wedge-shaped filter pockets 20 has two lateral filter walls 22a and 22b.
- the edges of the filter walls 22a and 22b of a filter bag 20 which face an inlet 24 of the housing 16 and which are left or front in FIGS. 2 and 3 are connected to one another, whereas those which face an outlet 26 of the housing 18 and which are on the right or rear in FIGS. 2 and 3 Edges of the filter walls 22a and 22b of a filter bag 20 are spaced apart. This results in the wedge shape of the filter pockets 20.
- the filter pockets 20 are closed radially inward and radially outward by a total of triangular filter wall sections 22c and 22d.
- the filter pockets 20 are arranged in a ring around a central channel-like flow space 28 and are sealed off from one another. This is closed at its rear end, which is not visible in FIG. 2, by a sealing plate.
- the filter structure 18 is also sealed in the region of its rear end in FIG. 2 by sealing devices (not shown in more detail).
- the filter walls 22, which ultimately form the filter structure 18, are made of sintered metal. This is an open-pore and gas-permeable structure which filters out soot particles from the gas stream when it passes through the filter walls 22. A corresponding gas flow is indicated in FIG. 3 by an arrow 30.
- the cleaned gas stream leaves the filter bags 20 via their right or rear and open end in FIGS. 2 and 3.
- the soot particles filtered out of the gas flow are deposited on those surfaces of the filter walls 20 which, viewed in the direction of the gas flow 30, limit the filter walls 20 upstream.
- This surface is designated by 32 on the filter wall 22b by way of example.
- the filter walls 22 are straight overall, they have unevenness, the possible configurations of which are shown in detail in FIGS. 4 to 8:
- the upstream surface 32 has a filter wall 22 a plurality of parallel wave-like elevations 34, which have a sinusoidal cross section.
- the slope of the surface 32 changes in the embodiment shown in FIG. 4 only in the Y direction, but not in the X direction.
- a further embodiment, which is shown in FIG. 5, likewise has wave-like elevations 34, which, however, have a triangular cross section.
- the slope of the surface 32 changes only in the Y direction, but not in the X direction.
- FIG. 6 A variant of FIG. 5 is shown in FIG. 6: There, too, are wave-like elevations 34 with a triangular cross section, which, however, do not directly adjoin one another, but between which there is a flat region 36 parallel to the wave-like elevations 34.
- FIG. 7 A still further embodiment of a surface 32 is shown in FIG. 7:
- the surface 32 there has a plurality of undulating elevations 38. These can have a conical, pyramidal, pointed or rounded shape, for example.
- the undulating elevations 38 are so high and the "valleys" 42 between the undulating elevations 38 are so deep that the average thickness of the filter wall 22 in the exemplary embodiment shown in FIG. 8 corresponds approximately to the thickness of a conventional flat filter wall 22.
- FIG. 9 shows a quotient Q over a period P and an amplitude A for the embodiment of a surface 32 of a filter wall 22 shown in FIG. 5 applied.
- the quotient Q is formed by the effective area F uneVe n / which is available for the deposition of soot particles on the uneven surface 32 in FIG. 5, and an area F even r which would be available on a conventional flat surface (at in the top view of an identical surface). It can be seen that a quotient Q of 125% is obtained even with a period of 0.8 mm and an amplitude of 0.3 mm, and that a quotient is obtained with a period of 0.5 mm and an amplitude of 0.3 mm of 150% is achieved.
- FIG. 10 A similar diagram is shown in FIG. 10, but for the exemplary embodiment in FIG. 4, in which the wave-like elevations 34 have a sinusoidal cross section: there, a quotient Q of 125% with an amplitude A of 0.3 mm is already given for a period P of 1, 7 mm, a quotient Q of 150% with an amplitude A of 0.3 mm and a period P of 1.1 mm, and a quotient Q of 200%, i.e. a doubling of the effective surface, with an amplitude A of 0 , 3 mm and a period P of 0.7 mm.
- the period P for the surface structures is preferably between 0.3 mm and 3 mm, the amplitude A preferably between 0.1 mm and 0.3 mm.
- the filter device can be a sintered metal filter or a comparable ceramic filter which also has a porous filter medium.
- This porous filter medium for which metal powder can be used as the starting substance for the sintered metal filters or ceramic powder for the ceramic filters, is used in the Manufacture of the filter, for example on a solid metal support such as woven metal or expanded metal or, in the case of ceramic filament, applied to comparable ceramic fiber layers and exposed to the metal or
- the porous filter medium is connected to the carrier in such a way that the filter surface has a three-dimensional shape, just the waves or hills and thalers described above. It may be advantageous to choose a period for the surface structure that is equal to the period of the support structure (for example in the case of a woven metal fabric), or it may be advantageous to choose the period of the support structure according to a period of the surface structure to be set. In this way, the thaler can be arranged in the gaps in the weaving structure and the hills on the pre-binding aers of the weaving or carrier structure.
- the filter device according to the invention can also be constructed from materials other than sintered metals or ceramics, for example from metal or ceramic foams, or from a fiber composite, in particular from metal fibers.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007517227A JP2007538193A (ja) | 2004-05-21 | 2005-04-22 | 特に内燃機関の排ガスシステムのためのフィルタ装置 |
US11/597,456 US20080115472A1 (en) | 2004-05-21 | 2005-04-22 | Filter Device, In Particular For An Exhaust-Gas System Of An Internal Combustion Engine |
EP05740021A EP1755767A1 (de) | 2004-05-21 | 2005-04-22 | Filtereinrichtung, insbesondere für ein abgassystem einer brennkraftmaschine |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004024993 | 2004-05-21 | ||
DE102004024993.8 | 2004-05-21 | ||
DE102004042730.5 | 2004-09-03 | ||
DE102004042730A DE102004042730B4 (de) | 2004-05-21 | 2004-09-03 | Filtereinrichtung, insbesondere für ein Abgassystem einer Brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005113113A1 true WO2005113113A1 (de) | 2005-12-01 |
Family
ID=34966288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/051814 WO2005113113A1 (de) | 2004-05-21 | 2005-04-22 | Filtereinrichtung, insbesondere für ein abgassystem einer brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080115472A1 (de) |
EP (1) | EP1755767A1 (de) |
JP (1) | JP2007538193A (de) |
DE (1) | DE102004042730B4 (de) |
WO (1) | WO2005113113A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008016956A1 (de) * | 2008-04-01 | 2009-10-08 | Branofilter Gmbh | Staubsauger und Filterkörper für einen Staubsauger |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120174787A1 (en) * | 2011-01-12 | 2012-07-12 | General Electric Company | Filter having flow control features |
EP3034148B1 (de) | 2013-08-14 | 2018-06-27 | Sumitomo Chemical Company Limited | Partikelfilter |
RU2645863C2 (ru) * | 2016-08-19 | 2018-02-28 | Акционерное общество "Климов" | Турбовинтовой двигатель |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4323374A (en) * | 1979-05-04 | 1982-04-06 | Nitta Belting Co., Ltd. | Air filter assembly |
US5609761A (en) * | 1994-09-16 | 1997-03-11 | Franz; Andreas | Filter medium and process for making same |
EP1260683A1 (de) * | 2001-05-24 | 2002-11-27 | Fleetguard, Inc. | Filter mit Teilchenverteilung zur Nachbehandlung von Abgasen |
DE10128936A1 (de) * | 2001-06-18 | 2003-01-02 | Hjs Fahrzeugtechnik Gmbh & Co | Partikelfilter, insbesondere für Abgase von Dieselbrennkraftmaschinen |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464301A (en) * | 1943-12-18 | 1949-03-15 | American Viscose Corp | Textile fibrous product |
DE2854931A1 (de) * | 1978-12-20 | 1980-07-10 | Bayer Ag | Vorrichtung zum agglomerieren und abscheiden von feinen nebeltropfen |
DE3109609A1 (de) * | 1981-03-13 | 1982-09-23 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | "schadstoff-filter fuer abgase" |
US5346519A (en) * | 1993-04-27 | 1994-09-13 | Pneumafil Corporation | Filter media construction |
JP3708542B2 (ja) * | 1993-08-13 | 2005-10-19 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | その上に不溶性酵素粒子を含有するカートリッジ・フィルター |
FR2774925B3 (fr) * | 1998-02-17 | 2000-04-14 | Filtrauto | Cartouche de filtration, notamment pour moteur a combustion interne |
US6521011B1 (en) * | 1999-07-15 | 2003-02-18 | 3M Innovative Properties Company | Self-supporting pleated filter and method of making same |
US6997969B1 (en) * | 2003-07-17 | 2006-02-14 | Lpd Technologies | Filter material and method |
US7235115B2 (en) * | 2004-07-09 | 2007-06-26 | 3M Innovative Properties Company | Method of forming self-supporting pleated filter media |
-
2004
- 2004-09-03 DE DE102004042730A patent/DE102004042730B4/de not_active Revoked
-
2005
- 2005-04-22 JP JP2007517227A patent/JP2007538193A/ja not_active Withdrawn
- 2005-04-22 US US11/597,456 patent/US20080115472A1/en not_active Abandoned
- 2005-04-22 EP EP05740021A patent/EP1755767A1/de not_active Withdrawn
- 2005-04-22 WO PCT/EP2005/051814 patent/WO2005113113A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4323374A (en) * | 1979-05-04 | 1982-04-06 | Nitta Belting Co., Ltd. | Air filter assembly |
US5609761A (en) * | 1994-09-16 | 1997-03-11 | Franz; Andreas | Filter medium and process for making same |
EP1260683A1 (de) * | 2001-05-24 | 2002-11-27 | Fleetguard, Inc. | Filter mit Teilchenverteilung zur Nachbehandlung von Abgasen |
DE10128936A1 (de) * | 2001-06-18 | 2003-01-02 | Hjs Fahrzeugtechnik Gmbh & Co | Partikelfilter, insbesondere für Abgase von Dieselbrennkraftmaschinen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008016956A1 (de) * | 2008-04-01 | 2009-10-08 | Branofilter Gmbh | Staubsauger und Filterkörper für einen Staubsauger |
Also Published As
Publication number | Publication date |
---|---|
DE102004042730B4 (de) | 2008-07-31 |
DE102004042730A1 (de) | 2005-12-15 |
JP2007538193A (ja) | 2007-12-27 |
US20080115472A1 (en) | 2008-05-22 |
EP1755767A1 (de) | 2007-02-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3064262B1 (de) | Filtermedium, verfahren zur herstellung eines filtermediums und filterelement mit einem filtermedium | |
AT396966B (de) | Abgasfilter für dieselmotoren | |
DE69502344T2 (de) | Dieselpartikelfilter | |
DE4206812C2 (de) | Motorabgasfilter | |
DE3043995A1 (de) | Abgasdurchstroemter schwebeteilchenfilter fuer dieselmaschinen | |
DE3043996A1 (de) | Abgasdurchstroemter schwebeteilchenfilter fuer dieselmaschien | |
EP0467147A1 (de) | Filter- oder Katalysatorkörper | |
EP4094819A1 (de) | Filterelement | |
DE60205938T2 (de) | Filtermedium | |
CH668618A5 (de) | Abgasfilter fuer dieselmotoren. | |
DE60212245T2 (de) | Verfahren und Vorrichtung zum Entfernen von Russpartikeln aus dem Abgas eines Dieselmotors | |
WO2005113113A1 (de) | Filtereinrichtung, insbesondere für ein abgassystem einer brennkraftmaschine | |
DE6919686U (de) | Filterkoerper aus metallfasern | |
EP1787705A1 (de) | Filtereinrichtung, insbesondere für ein Abgassystem einer Dieselbrennkraftmaschine | |
WO2006114345A1 (de) | FILTEREINRICHTUNG, INSBESONDERE RUßPARTIKELFILTER, FÜR EIN ABGASSYSTEM EINER BRENNKRAFTMASCHINE | |
EP1773467A1 (de) | Filterplatte für einen partikelfilter | |
DE102008000688A1 (de) | Filtereinrichtung, insbesondere für ein Abgassystem einer Brennkraftmaschine | |
DE1632871A1 (de) | Filteraufbau | |
DE19611150A1 (de) | Partikelfilter für eine Brennkraftmaschine | |
WO2004035175A2 (de) | Filteranordnung zum abscheiden von partikeln aus einem flüssigen und/oder gasförmigen medium | |
EP1543871B1 (de) | Filter mit Filtereinsatz und Verwendung eines derartigen Filters | |
DE102006021737B4 (de) | Filterelement für einen Rußpartikelfilter einer Brennkraftmaschine | |
DE102004026798A1 (de) | Abgaspartikelfilter | |
EP2134443A1 (de) | Keramischer formkörper für ein dieselpartikelfilter | |
DE102006001387A1 (de) | Filtereinrichtung, insbesondere zur Filterung von Abgasen einer Dieselbrennkraftmaschine, sowie Verfahren zu deren Herstellung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005740021 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007517227 Country of ref document: JP |
|
WWP | Wipo information: published in national office |
Ref document number: 2005740021 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11597456 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 11597456 Country of ref document: US |