DE102006043687A1 - Filter element, in particular for filtering exhaust gases of an internal combustion engine - Google Patents
Filter element, in particular for filtering exhaust gases of an internal combustion engine Download PDFInfo
- Publication number
- DE102006043687A1 DE102006043687A1 DE102006043687A DE102006043687A DE102006043687A1 DE 102006043687 A1 DE102006043687 A1 DE 102006043687A1 DE 102006043687 A DE102006043687 A DE 102006043687A DE 102006043687 A DE102006043687 A DE 102006043687A DE 102006043687 A1 DE102006043687 A1 DE 102006043687A1
- Authority
- DE
- Germany
- Prior art keywords
- filter element
- filter
- electrically conductive
- outside
- conductive elements
- 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.)
- Withdrawn
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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/04—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric, e.g. electrostatic, device other than a heater
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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
- F01N2390/00—Arrangements for controlling or regulating exhaust apparatus
- F01N2390/02—Arrangements for controlling or regulating exhaust apparatus using electric components only
-
- 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
- F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Die Erfindung betrifft ein Filterelement (18), insbesondere zur Filterung von Abgasen einer Brennkraftmaschine (10), wobei das Filterelement (18) an seiner Außenseite (36) elektrisch leitende Elemente (42) für eine Messung von insbesondere einen Beladungszustand des Filterelements (18) betreffenden Kenngrößen aufweist, wobei die elektrisch leitenden Elemente (42) auf die Außenseite (36) des Filterelements (18) aufgedruckt sind.The invention relates to a filter element (18), in particular for filtering exhaust gases of an internal combustion engine (10), the filter element (18) having on its outer side (36) electrically conductive elements (42) for measuring, in particular, a loading state of the filter element (18). having characteristic parameters, wherein the electrically conductive elements (42) on the outer side (36) of the filter element (18) are printed.
Description
Stand der TechnikState of the art
Die Erfindung betrifft ein Filterelement, insbesondere zur Filterung von Abgasen einer Brennkraftmaschine, nach dem Oberbegriff des Anspruchs 1, einen Partikelfilter und eine Abgasreinigungsanlage mit einem Filterelement sowie Verfahren zur Herstellung eines Filterelements und eines Partikelfilters.The The invention relates to a filter element, in particular for filtering of exhaust gases of an internal combustion engine, according to the preamble of claim 1, a particulate filter and an exhaust gas purification system with a filter element and methods of making a filter element and a particulate filter.
Solche
Filterelemente sind aus der
Um den über dem Filterelement anliegenden Druckverlust zu erfassen, ist es bekannt, Drucksensoren zu verwenden, die dem Filterelement vor- und nachgeschaltet werden, um den Differenzdruck ermitteln zu können. Diese Art der Beladungserkennung hat jedoch den Nachteil, dass der gemessene Differenzdruck nicht nur durch die in dem Filterelement eingelagerte Partikelmenge bestimmt ist, sondern darüber hinaus von bei einer Abbrand- Regeneration des Filterelements entstehenden Ascherückständen. Zudem hängt der Differenzdruck auch von der jeweils anliegenden Abgasströmung ab.Around the over detecting the pressure loss applied to the filter element, it is known Use pressure sensors that upstream and downstream of the filter element be used to determine the differential pressure. This type of load detection however, has the disadvantage that the measured differential pressure is not only determined by the amount of particles stored in the filter element is, but about it out of a burn-up regeneration of the filter element resulting ash residues. In addition, the hangs Differential pressure also from the respective adjacent exhaust gas flow.
Hierauf aufbauend werden in den eingangs genannten Druckschriften alternative Messverfahren vorgeschlagen, mit denen der Beladungszustand eines Filterelements, insbesondere eines Dieselpartikelfilters, erfasst werden kann. Hierfür wird ein elektrisch nicht leitendes Filterelement mit Elektroden versehen, so dass elektrische Kenngrößen gemessen werden können, die im Zusammenhang mit dem Beladungszustand des Filterelements stehen. Diese Kenngrößen können beispielsweise Widerstands-, Kapazitäts- oder Induktivitätsänderungen des Filterelements betreffen.hereupon Based on the above-mentioned documents alternative Proposed measuring method with which the loading state of a Filter element, in particular a diesel particulate filter detected can be. Therefor an electrically non-conductive filter element is provided with electrodes, so that electrical parameters are measured can be that in connection with the loading state of the filter element stand. These parameters can be, for example Resistance, capacity or inductance changes of the filter element.
Mit der Verwendung der Elektroden geht einher, dass zur Herstellung eines solchen Filterelements oder eines solchen Partikelfilters zusätzliche Fertigungsschritte erforderlich sind. Eine Montage der elektrisch leitenden Elemente wird zudem durch den bei Partikelfiltern üblicherweise begrenzten Bauraum erschwert.With the use of the electrodes is associated with that for the production such a filter element or such a particulate filter additional production steps required are. An assembly of the electrically conductive elements is also due to the usually limited in particulate filter space difficult.
Offenbarung der ErfindungDisclosure of the invention
Aufgabe der vorliegenden Erfindung ist es, ein besonders einfach herstellbares Filterelement der eingangs genannten Art zu schaffen.task The present invention is a particularly easy to produce To provide filter element of the type mentioned.
Die der Erfindung zugrundeliegende Aufgabe wird bei einem eingangs genannten Filterelement dadurch gelöst, dass die elektrisch leitenden Elemente auf die Außenseite des Filterelements aufgedruckt sind.The The problem underlying the invention is at an aforementioned Solved filter element that the electrically conductive elements on the outside of the filter element are printed.
Vorteilhafte WirkungenAdvantageous effects
Das erfindungsgemäße Filterelement zeichnet sich zum Einen dadurch aus, dass die elektrisch leitenden Elemente in besonders einfacher Weise auf die Außenseite des Filterelements aufgebracht werden können. Zum Anderen hat das erfindungsgemäße Filterelement den Vorteil, dass die elektrisch leitenden Elemente in besonders niedriger Schichtstärke aufgetragen werden können, so dass ein nur minimaler zusätzlicher Bauraum beansprucht wird.The filter element according to the invention On the one hand characterized by the fact that the electrically conductive Elements in a particularly simple manner on the outside of the filter element can be applied. On the other hand, the filter element according to the invention has the advantage that applied the electrically conductive elements in a particularly low layer thickness can be so that only a minimal additional Space is claimed.
Es wird weiterhin vorgeschlagen, dass die elektrisch leitenden Elemente durch Sintern mit der Außenseite des Filterelements verbunden sind. Auf diese Weise kann das erfindungsgemäße Filterelement hergestellt werden, indem ein Rohling beispielsweise im Extrusionsverfahren hergestellt wird, anschließend die elektrisch leitenden Elemente aufgedruckt werden und abschließend das extrudierte Filterelemente gemeinsam mit den elektrisch leitenden Elementen gesintert wird. Hierdurch ist gegenüber Filterelementen, die keine elektrisch leitenden Elemente aufweisen, nur ein zusätzlicher Fertigungsschritt erforderlich.It is further proposed that the electrically conductive elements by sintering with the outside of the filter element are connected. In this way, the filter element according to the invention be prepared by a blank, for example by extrusion is produced, then the electrically conductive elements are printed and finally the extruded filter elements together with the electrically conductive Sintered elements. This is compared to filter elements that no having electrically conductive elements, only one additional Manufacturing step required.
Die elektrisch leitenden Elemente können Kontaktflächen für eine außerhalb des Filterelements angeordnete Messanordnung umfassen. Diese Kontaktflächen können aus einem besonders gut leitenden Material gebildet sein, das vorzugsweise chemisch stabil und gegen Hitze unempfindlich ist. Mit Hilfe der Messanordnung können der Widerstand, die Kapazität und/oder die Induktivität des Filterelements gemessen werden, um Rückschlüsse auf den Beladungszustand des Filterelements ziehen zu können.The electrically conductive elements can contact surfaces for an outside comprising the filter element arranged measuring arrangement. These contact surfaces can be off be formed a particularly good conductive material, preferably chemically stable and insensitive to heat. With the help of Measuring arrangement can the resistance, the capacity and / or the inductance of the filter element are measured in order to draw conclusions about the loading condition to pull the filter element.
In vorteilhafter Weise sind die Kontaktflächen Punkt- oder kreisförmig, so dass für eine Kontaktierung keine Vorzugsrichtung vorgegeben wird und die Kontaktflächen aus allen Richtungen gleich gut kontaktiert werden können.In Advantageously, the contact surfaces are point or circular, so that for a contact no preferred direction is specified and the contact surfaces All directions can be contacted equally well.
Die elektrisch leitenden Elemente können auch mit den Kontaktflächen elektrisch verbundene Leitflächen umfassen. Diese Leitflächen schaffen einen großflächigen Kontakt mit der Außenseite des Filterelements. Dementsprechend können die Leitflächen mindestens 5%, vorzugsweise mindestens 20% der Außenseite des Filterelements überdecken.The electrically conductive elements can also with the contact surfaces electrically connected fins include. These fins create a large-scale contact with the outside of the filter element. Accordingly, the fins can at least Cover 5%, preferably at least 20% of the outside of the filter element.
Nach einer weiteren Ausführungsform der Erfindung erstrecken sich die Leitflächen ring- oder spiralförmig um das Filterelement herum. Auch hierdurch ist ein guter Kontakt zur Außenseite des Filterelements gewährleistet. Darüber hinaus können die Leitflächen auch bestromt werden, so dass die Leitflächen als elektrische Widerstände wirken, die das Filterelement erwärmen.To a further embodiment invention, the guide surfaces extend annularly or spirally around the filter element around. This is also a good contact to outside ensures the filter element. About that can out the fins be energized so that the fins act as electrical resistors, which heat the filter element.
Hierdurch kann eine Regeneration des Filterelements unter Abbrand abgelagerter Partikel unterstützt werden.hereby can a regeneration of the filter element deposited under combustion Particles supported become.
Vorzugsweise ist das Filterelement aus einem keramischen Werkstoff, insbesondere aus Cordierit oder Siliziumcarbid gebildet.Preferably is the filter element of a ceramic material, in particular made of cordierite or silicon carbide.
Die Erfindung betrifft ferner einen Partikelfilter mit einem vorstehend beschriebenen Filterelement, wobei der Partikelfilter ein Gehäuse aufweist, dessen Gehäusewand das Filterelement zumindest abschnittsweise umhüllt. Es wird vorgeschlagen, dass auf der dem Filterelement zugewandten Seite der Gehäusewand elektrische Kontaktelemente vorgesehen sind, die mit den Kontaktflächen des Filterelements zusammenwirken. Auf diese Weise wird die elektrische Kopplung einer externen Messanordnung mit den Kontaktflächen des Filterelements erleichtert. Besonders vorteilhaft ist es, wenn sich die Kontaktelemente durch die Gehäusewand hindurch nach außen erstrecken, so dass sie in einfacher Weise mit einer außerhalb des Partikelfilters angeordneten Messanordnung kontaktierbar sind.The The invention further relates to a particulate filter having an above described filter element, wherein the particulate filter has a housing whose housing wall the filter element at least partially wrapped. It is suggested that on the side facing the filter element side of the housing wall electrical contact elements are provided, which are connected to the contact surfaces of Interacting filter element. In this way, the electric Coupling of an external measuring arrangement with the contact surfaces of the Filter element facilitates. It is particularly advantageous when the contact elements extend through the housing wall to the outside, making it easy with one outside of the particulate filter arranged measuring arrangement can be contacted.
Die Erfindung betrifft ferner ein Verfahren zum Betrieb eines erfindungsgemäßen Filterelements sowie verschiedene Verfahren zur Herstellung eines erfindungsgemäßen Filterelements.The The invention further relates to a method for operating a filter element according to the invention and various methods for producing a filter element according to the invention.
Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der nachfolgenden Zeichnung, deren Beschreibung und den Patentansprüchen entnehmbar. Alle in der Zeichnung, deren Beschreibung und den Patentansprüchen beschriebenen Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein.Further Advantages and advantageous embodiments of the invention are the subsequent drawing, the description and the claims can be removed. All described in the drawing, the description and the claims Features can both individually and in any combination with each other invention essential be.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigen:It demonstrate:
Ausführungsformen der ErfindungEmbodiments of the invention
In
Der
Partikelfilter
In
Das
Filterelement
Parallel
zu einer Längsachse
Der
Strömungsweg
des ungereinigten Abgases führt
also in einen der Einlasskanäle
In
Es
sind insgesamt zwei Leitflächen
Der
in
Zur
Montage des Partikelfilters
In
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006043687A DE102006043687A1 (en) | 2006-09-18 | 2006-09-18 | Filter element, in particular for filtering exhaust gases of an internal combustion engine |
PCT/EP2007/057692 WO2008034662A1 (en) | 2006-09-18 | 2007-07-26 | Filter element, in particular for filtering exhaust gases of an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006043687A DE102006043687A1 (en) | 2006-09-18 | 2006-09-18 | Filter element, in particular for filtering exhaust gases of an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006043687A1 true DE102006043687A1 (en) | 2008-03-27 |
Family
ID=38606855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006043687A Withdrawn DE102006043687A1 (en) | 2006-09-18 | 2006-09-18 | Filter element, in particular for filtering exhaust gases of an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102006043687A1 (en) |
WO (1) | WO2008034662A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6920451B2 (en) * | 2017-09-27 | 2021-08-18 | 京セラ株式会社 | Measuring device parts |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4813231A (en) * | 1987-10-07 | 1989-03-21 | Southwest Research Institute | Engine exhaust after-treatment device |
WO1993008382A1 (en) * | 1991-10-25 | 1993-04-29 | Caterpillar Inc. | Method and apparatus for initiating regeneration in an engine exhaust particulate filter |
US5449541A (en) * | 1992-10-27 | 1995-09-12 | Corning Incorporated | Electrically heatable honeycomb structures |
US20080048681A1 (en) * | 2004-02-12 | 2008-02-28 | Daimlerchrysler Ag | Device for Determining the State of a Soot Particle Filter |
DE102004007041A1 (en) * | 2004-02-12 | 2005-09-01 | Daimlerchrysler Ag | Method for operating a particle filter |
DE102004007040A1 (en) * | 2004-02-12 | 2005-09-01 | Daimlerchrysler Ag | Device and method for determining the loading state of a particle filter |
-
2006
- 2006-09-18 DE DE102006043687A patent/DE102006043687A1/en not_active Withdrawn
-
2007
- 2007-07-26 WO PCT/EP2007/057692 patent/WO2008034662A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2008034662A1 (en) | 2008-03-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE602004011176T2 (en) | Apparatus for filtering and burning particulate matter | |
DE60102550T2 (en) | Filter for cleaning exhaust gases | |
DE102010004513B4 (en) | Gas particle treatment system | |
EP1834068B1 (en) | Method for eliminating particles contained in exhaust gases, fibrous layer and particulate filter | |
DE102011050788A1 (en) | Exhaust gas aftertreatment device and method for a gasoline engine | |
EP1640588A2 (en) | Method for operating an internal combustion engine, and sensor device for detecting at least one characteristic value in the engine exhaust gas | |
DE3806131C2 (en) | ||
AT506923B1 (en) | AIR FILTER FOR INTERNAL COMBUSTION ENGINE | |
DE102008058418A1 (en) | Process for the regeneration of an open particle separator | |
DE102007020040A1 (en) | Exhaust gas purifying system comprises pipe containing purifying unit, gas inlet which is offset upwards from its central axis and outlet which is offset downwards, sensor in section of pipe wall joining its top to top of outlet pipe | |
EP2208982B1 (en) | Exhaust gas particle sensor | |
DE102006043687A1 (en) | Filter element, in particular for filtering exhaust gases of an internal combustion engine | |
DE102016213769B4 (en) | Particle filter for an exhaust system and method for producing a particle filter | |
DE102008000688A1 (en) | Filter device, in particular for an exhaust system of an internal combustion engine | |
DE102005055074A1 (en) | Filter device, in particular for an exhaust system of an internal combustion engine | |
DE102010063690A1 (en) | filter element | |
DE102007063100A1 (en) | Exhaust gas aftertreatment device for internal combustion engine, has filter elements, where storage capacity for soot particles of one of filter elements is larger or equal to storage capacity of another filter element | |
WO2009016006A1 (en) | Exhaust system of an internal combustion engine | |
DE102017006596A1 (en) | Sensor device for an exhaust tract of an internal combustion engine, in particular for a motor vehicle | |
DE102004064268B3 (en) | Sensor device for detecting particles present in the exhaust gas of an internal combustion engine and for detecting the exhaust gas temperature | |
DE102007003121A1 (en) | Particulate filter, particularly exhaust gas -particulate filter for internal combustion engine, has comb-like filter body, in which alternating and overall processing of input channel and output channel are provided | |
EP2146062B1 (en) | Particulate filter for diesel and petrol engines | |
DE19933442A1 (en) | Particulate filter e.g. soot filter used in exhaust gas in an internal combustion engine has filter medium and catalyst forming rope-like shape and wound into one of the cylindrical filters | |
DE102005001756A1 (en) | Production of ceramic wound body used as exhaust particle filter comprises winding blank made from flat ceramic blank material provided with wound body condition sensor element and subjecting to ceramic-forming treatment | |
DE102006021737B4 (en) | Filter element for a soot particle filter of an internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |