DE3800723A1 - Soot burn-off filter for diesel engines - Google Patents

Soot burn-off filter for diesel engines

Info

Publication number
DE3800723A1
DE3800723A1 DE19883800723 DE3800723A DE3800723A1 DE 3800723 A1 DE3800723 A1 DE 3800723A1 DE 19883800723 DE19883800723 DE 19883800723 DE 3800723 A DE3800723 A DE 3800723A DE 3800723 A1 DE3800723 A1 DE 3800723A1
Authority
DE
Germany
Prior art keywords
filter
heating
soot
burning
wires
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
Application number
DE19883800723
Other languages
German (de)
Other versions
DE3800723C2 (en
Inventor
Juergen Dipl Ing Heuer
Rudolf Dipl Ing Frank
Reinhold Mohr
Rudolf Maischein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler Benz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19883800723 priority Critical patent/DE3800723A1/en
Publication of DE3800723A1 publication Critical patent/DE3800723A1/en
Application granted granted Critical
Publication of DE3800723C2 publication Critical patent/DE3800723C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • 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
    • F01N3/0212—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 with one or more perforated tubes surrounded by filtering material, e.g. filter candles
    • 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
    • F01N3/0226—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 fibrous
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/58—Heating hoses; Heating collars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/069—Special geometry of layers
    • B01D2239/0695—Wound layers
    • 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
    • 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
    • F01N2330/10—Fibrous material, e.g. mineral or metallic wool
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/18—Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

Electrical heating wires are fitted to the filter candles of a soot filter as regenerating device. The said wires may be connected by thermally conductive wires running essentially transversely thereto. In order to reduce the power consumption for the regeneration, the heating devices can be separately controlled for each filter candle. In heating up, the soot particles deposited directly on the heating element are fired first and transmit the energy released in the combustion to the adjacent particles. This reduces the energy consumption required for regeneration.

Description

Die Erfindung betrifft ein Rußabbrennfilter für Diesel­ motoren mit mindestens einem in einem Filtergehäuse ange­ ordneten Filterelement und mit einer Vorrichtung zum Ab­ brennen von am Filterelement abgelagerten Rußpartikeln.The invention relates to a soot burning filter for diesel motors with at least one in a filter housing arranged filter element and with a device for Ab burn soot particles deposited on the filter element.

Derartige Filter zum Abscheiden von Rußpartikeln aus den Abgasen eines Dieselmotors sind z.B. in der DE-PS 30 07 642 beschrieben. Dabei liegen in einem mit Zu- und Ab­ leitungsstutzen für das Abgas des Motors versehenen Gehäuse mehrere an ihrem einen Ende am Gehäuse befestigte Stütz­ rohre. Auf diese Stützrohre ist Garn aus Siliziumdioxid­ fasern als Filtermaterial für die auszuscheidenden festen Bestandteile im Abgas aufgespult.Such filters for separating soot particles from the Exhaust gases from a diesel engine are e.g. in DE-PS 30 07 642. There are in one with increase and decrease pipe connection for the exhaust gas of the engine provided housing several supports attached to the housing at one end tube. There is silicon dioxide yarn on these support tubes fibers as filter material for the solid to be separated Components wound up in the exhaust gas.

Ein Nachteil solcher Filter ist, daß sie durch eine zu große Anlagerung von Rußpartikeln verstopfen. Ein selb­ ständiges Freibrennen der Filterelemente ist durch die niedrige Abgastemperatur eines Dieselmotors nicht möglich; es muß daher zusätzliche Energie in großem Maße zum Frei­ brennen des Filters aufgebracht werden.A disadvantage of such filters is that they are separated by a filter block large accumulation of soot particles. A same constant burning of the filter elements is due to the low exhaust gas temperature of a diesel engine not possible; therefore, additional energy must be released to a large extent burn the filter.

Aufgabe der Erfindung ist es, eine Möglichkeit zur Rege­ nerierung an sich bekannter Rußfilter ohne Beeinträchtigung des laufenden Maschinenbetriebs und bei möglichst geringem Energieverbrauch zu schaffen.The object of the invention is to provide a way to brisk soot filter known per se without impairment ongoing machine operation and as little as possible Create energy consumption.

Die Aufgabe wird erfindungsgemäß durch die im kennzeich­ nenden Teil des Patentanspruchs 1 genannten Merkmale gelöst. Weitere Ausgestaltungen und Vorteile der Erfindung gehen aus den Unteransprüchen und der Beschreibung hervor.The task is inventively characterized in ning part of claim 1 resolved features. Further configurations and advantages of the invention go from the subclaims and the description.

Um an sich bekannte Filterelemente, die als Wickelfilter, sog. Filterkerzen, ausgebildet sind, werden Widerstands­ drähte als elektrische Heizelemente angebracht. Dies kann z.B. durch wendelförmige Aufwicklung der Drähte um den Filterkerzenkörper erfolgen, oder dadurch, daß mehrere Drähte parallel zueinander um den Umfang des Kerzenkörpers gelegt werden. Außerdem können im wesentlichen quer zur Richtung der Heizdrähte, d.h. in Richtung der Längsachse des Filterelements, verlaufende, elektrisch von den Heiz­ drähten isolierte (z.B. durch Oxidation), wärmeleitfähige Drähte vorgesehen sein, so daß ein schlauchförmig um die Filterkerze liegendes Drahtgeflecht entsteht. Dieses Draht­ geflecht kann in seiner Längsachse geteilt sein. Die einen Enden der Heizdrähte an den beiden so entstandenen Längs­ kanten des Geflechts werden über eine Längsschiene jeweils elektrisch miteinander verbunden und diese beiden Längs­ schienen werden an die entsprechenden Klemmen einer Spannungs­ quelle angeschlossen. Selbstverständlich ist es auch denk­ bar, die Heizdrähte in Längsrichtung des Filterelements anzuordnen und die wärmeleitfähigen Drähte in Umfangsrichtung. Dementsprechend müßten die elektrischen Anschlüsse an Beginn und Ende des Filterelements vorgesehen werden. In order to filter elements known per se, which act as wound filters, So-called filter candles are formed, become resistance wires attached as electrical heating elements. This can e.g. by helically winding the wires around the Filter candle bodies are made, or in that several Wires parallel to each other around the circumference of the candle body be placed. In addition, can be essentially transverse to Direction of the heating wires, i.e. in the direction of the longitudinal axis of the filter element, trending, electrically from the heater wires insulated (e.g. by oxidation), thermally conductive Wires may be provided so that a tubular shape around the Wire mesh lying on the filter candle is created. That wire braid can be divided in its longitudinal axis. The one Ends of the heating wires on the two longitudinal lines thus created edges of the braid are each on a longitudinal rail electrically connected and these two longitudinal rails are connected to the corresponding terminals of a voltage source connected. Of course it is also think bar, the heating wires in the longitudinal direction of the filter element to arrange and the thermally conductive wires in the circumferential direction. Accordingly, the electrical connections would have to The beginning and end of the filter element can be provided.  

Da die aufzubringende Leistung für eine Regenerierung des gesamten Rußfilters in einem einzigen Arbeitsschritt un­ verhältnismäßig groß im Vergleich zur Motorleistung ist, sind die Heizelemente für die einzelnen Filterkerzen ge­ trennt schaltbar. Es ist auch denkbar, daß auch für jede einzelne Filterkerze das Heizelement in weitere Teilele­ mente aufgeteilt werden kann und diese Teilelemente wie­ derum getrennt ansteuerbar sein können. Durch diese Maß­ nahme könnte der momentane Leistungsbedarf weiter einge­ schränkt werden.Since the performance to be regenerated entire soot filter in a single step is relatively large compared to the engine power, are the heating elements for the individual filter candles separable switchable. It is also conceivable that for everyone single filter candle the heating element in further parts elements can be divided and these sub-elements like which can be controlled separately. By that measure the current power requirement could further decrease be restricted.

Im Abgasstrom mittransportierte Rußpartikel werden am Filtermaterial zurückgehalten oder lagern sich auch an der Oberfläche des Heizelements ab. Durch die Nähe der Wärmequelle, d.h. der Heizdrähte, zu den Rußpartikeln bzw. durch ihren direkten Kontakt mit diesen, ist eine Entzündung der Rußpartikel zu derem Abbrennen unter ge­ ringem Energieeinsatz und nach sehr kurzer Heizdauer mög­ lich. Nach einer Entzündung der Rußpartikel läuft die weitere Oxidation durch eine Übertragung der bei der Ver­ brennung freiwerdenden Energie von Partikel auf Partikel selbsttätig ab, wodurch der Energieverbrauch weiter ver­ ringert wird.Soot particles that are also transported in the exhaust gas stream are Filter material is retained or accumulates the surface of the heating element. Due to the proximity of the Heat source, i.e. of the heating wires, to the soot particles or through their direct contact with them is one Inflammation of the soot particles to burn them under ge low energy consumption and possible after a very short heating time Lich. After inflammation of the soot particles runs further oxidation by a transfer of the Ver burning released energy from particle to particle automatically, which further reduces energy consumption is wrestled.

Die Steuerung der Beheizung kann in an sich bekannter Weise durch Auswertung des Abgasgegendruckes im Filter erfolgen. Es sind aber auch andere Steuerparameter, wie z.B. die Abgastemperatur, denkbar.The heating can be controlled in a manner known per se by evaluating the exhaust gas back pressure in the filter. But there are also other control parameters, such as the Exhaust gas temperature, conceivable.

Ein Ausführungsbeispiel der Erfindung sei nachstehend an­ hand der Zeichnungen beschrieben. Es zeigt: An embodiment of the invention is below hand described in the drawings. It shows:  

Fig. 1a schematisch einen Querschnitt durch ein Fil­ tergehäuse, Fig schematically tergehäuse. 1a is a cross section through a Fil,

Fig. 1b schematisch einen Längsschnitt durch ein Fil­ tergehäuse gemäß der Schnittlinie I-I in Fig. 1a und Fig. 1b schematically shows a longitudinal section through a Fil tergehäuse according to section line II in Fig. 1a and

Fig. 2 eine vereinfachte Ansicht eines einzelnen Fil­ terelements. Fig. 2 is a simplified view of a single Fil terelements.

In der Fig. 1a ist schematisch ein Querschnitt durch ein Rußfilter der bekannten Bauart dargestellt. In einem Filter­ gehäuse 1 ist eine Anzahl von einzelnen Filterelementen 2 angebracht, die jeweils auf ihrer Umfangsoberfläche Heiz­ elemente 3 tragen.In Fig. 1a, a cross section through a soot filter of the known type is shown schematically. In a filter housing 1 , a number of individual filter elements 2 is attached, each carrying heating elements 3 on their peripheral surface.

In Fig. 1b ist ein Längsschnitt durch ein Rußfilter gemäß Schnittlinie I-I in Fig. 1a gezeigt. Das Filtergehäuse ist wieder mit 1, die Filterelemente mit 2 und die darauf be­ festigten Heizelemente mit 3 bezeichnet. Der Übersicht­ lichkeit wegen sind nicht alle Filterelemente aus Fig. 1a dargestellt. Mit Pfeilen ist der Abgasstrom durch das Rußfilter angedeutet. Die Abgase durchströmen vom Motor kommend die Zwischenräume zwischen den Filterelementen 2. Dabei durchdringen sie, da ihnen der weitere Weg durch die als Befestigung für die Filterelemente 2 dienende Querwand 4 versperrt ist, die auf der Filteroberfläche angebrachten Heizelemente 3 und das Filtermaterial und gelangen unter Ablagerung der mitgeführten Rußpartikel durch das rohrförmige Innere der Filterelemente zum Ab­ leitungsstutzen und in das Auspuffsystem. Die abgelagerten Rußpartikel befinden sich dann sowohl an den Heizele­ menten, als auch am und im Filtermaterial. In Fig. 1b is a longitudinal section through a soot filter according to section line II in Fig. 1a. The filter housing is again denoted by 1 , the filter elements with 2 and the heating elements attached to it with 3 . For the sake of clarity, not all filter elements from Fig. 1a are shown. The exhaust gas flow through the soot filter is indicated by arrows. Coming from the engine, the exhaust gases flow through the spaces between the filter elements 2 . They penetrate them because the further path is blocked by the transverse wall 4 serving as a fastening for the filter elements 2 , the heating elements 3 attached to the filter surface and the filter material and pass with the deposition of the soot particles carried through the tubular interior of the filter elements to the pipe socket and into the exhaust system. The deposited soot particles are then both on the Heizele elements, and on and in the filter material.

In der Fig. 2 ist vereinfacht die Ansicht eines einzelnen Filterelements 2 mit seinem rohrförmigen Abzugskanal 8 und dem Filtermaterial 9 auf seinem Träger 10 gezeigt. Es können verschiedene Materialien und Aufbauarten für das Filter angenommen werden, so z.B. im Kreuzwickel auf den Träger 10 aufgespultes Garn aus gesponnenen Siliziumdi­ oxidfasern. FIG. 2 shows a simplified view of an individual filter element 2 with its tubular discharge channel 8 and the filter material 9 on its carrier 10 . Different materials and types of construction for the filter can be adopted, for example yarn spun from silicon di oxide fibers wound onto the carrier 10 in a cross wrap.

Auf das Filtermaterial 9 ist das Heizelement 3 aufgebracht. Im Ausführungsbeispiel dieser Figur ist ein Heizelement ge­ zeigt, welches aus im wesentlichen parallel zueinander und in Umfangsrichtung des Filterelements verlaufenden Heiz­ drähten 3 a besteht, die - elektrisch isoliert - durch quer zu ihnen, also in Längsrichtung des Filterelements, ver­ laufende Wärmeleitdrähte 3 b verbunden sind.The heating element 3 is applied to the filter material 9 . In the embodiment of this figure, a heating element is shown ge, which consists of heating wires 3 a running essentially parallel to one another and in the circumferential direction of the filter element, which - electrically insulated - connected transversely to them, that is to say in the longitudinal direction of the filter element, running heat conducting wires 3 b are.

Die Heizdrähte 3 a des so gebildeten, in seiner Längsrichtung am Umfang des Filterelements geteilten Drahtgewebes werden an ihren einen Enden jeweils durch eine einen elektrischen Kontakt zwischen diesen Enden herstellende Längsschiene 5 a und 5 b verbunden, die ihrerseits an einem nichtleitenden Befestigungselement 6 angebracht sind. Dieses Befestigungs­ element 6 trägt also nicht nur die Längsschienen 5 a und 5 b, sondern dient auch noch als Befestigung des Heizelementes 3 selbst am Filterelement 2. Außerdem dient das Befestigungs­ element 6 als Isolator zwischen den beiden als Verteiler­ schiene zu den Heizdrähten 3 a wirkenden Längsschienen 5 a und 5 b. Über diese beiden Längsschienen 5 a und 5 b erfolgt die Spannungsversorgung des Heizelements 3 aus einer Spannungsquelle 7. The heating wires 3 a of the wire mesh thus formed, which is divided in its longitudinal direction on the circumference of the filter element, are connected at their one ends each by an electrical contact between these ends producing longitudinal rails 5 a and 5 b , which in turn are attached to a non-conductive fastening element 6 . This fastening element 6 therefore not only supports the longitudinal rails 5 a and 5 b , but also serves as a fastening of the heating element 3 itself to the filter element 2 . In addition, the fastening element 6 serves as an insulator between the two as a distributor rail to the heating wires 3 a acting longitudinal rails 5 a and 5 b . The heating element 3 is supplied with voltage from a voltage source 7 via these two longitudinal rails 5 a and 5 b .

Jedes Heizelement 3 der einzelnen Filterelemente 2 ist über seine Längsschienen 5 a und 5 b, getrennt von den Heizelementen 3 der jeweils anderen Filterelemente 2, an die Spannungsquelle 7 durch hier nicht gezeigte Schalt­ vorrichtungen angeschlossen. Dieser getrennte Anschluß ermöglicht eine individuelle, z.B. sequentielle, Steuerung des Heizelements 3 der einzelnen Filterelemente 2 und senkt damit die momentane Leistungsaufnahme des Rußabbrenn­ filters erheblich.Each heating element 3 of the individual filter elements 2 is connected via its longitudinal rails 5 a and 5 b , separately from the heating elements 3 of the respective other filter elements 2 , to the voltage source 7 by switching devices, not shown here. This separate connection enables individual, for example sequential, control of the heating element 3 of the individual filter elements 2 and thus considerably reduces the instantaneous power consumption of the soot-burning filter.

Claims (7)

1. Rußabbrennfilter für Dieselmotoren mit mindestens einem in einem Filtergehäuse (1) angeordneten Filterelement (2) und mit einer Vorrichtung zum Abbrennen von am Filterelement (2) abgelagerten Rußpartikeln, dadurch gekennzeichnet, daß auf die vom Abgas umströmte Oberfläche des Filter­ elements (2) ein drahtförmiges Heizelement (3) aufgebracht ist.1. Soot burn-off filter for diesel engines with at least one filter element ( 2 ) arranged in a filter housing ( 1 ) and with a device for burning off soot particles deposited on the filter element ( 2 ), characterized in that on the surface of the filter element ( 2 ) around which the exhaust gas flows. a wire-shaped heating element ( 3 ) is applied. 2. Rußabbrennfilter nach Anspruch 1, dadurch gekennzeichnet, daß das Heizelement (3) aus mehreren parallel zueinander angeordneten Heizdrähten (3 a) besteht.2. soot burning filter according to claim 1, characterized in that the heating element ( 3 ) consists of a plurality of heating wires arranged in parallel ( 3 a ). 3. Rußabbrennfilter nach Anspruch 1, dadurch gekennzeichnet, daß das Heizelement (3) aus einem wendelförmig in wenig­ stens einer Lage auf das Filterelement (2) aufgebrachten Heizdraht (3 a) besteht. 3. soot burning filter according to claim 1, characterized in that the heating element ( 3 ) from a helical in little least one layer on the filter element ( 2 ) applied heating wire ( 3 a ). 4. Rußabbrennfilter nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die Heizdrähte (3 a) durch elektrisch von ihnen isolierte, sich im wesentlichen quer zur Richtung der einzelnen Heiz­ drähte erstreckende wärmeübertragende Elemente (3 b) ge­ flechtartig miteinander verbunden sind.4. soot burning filter according to one of claims 2 or 3, characterized in that the heating wires ( 3 a ) by electrically insulated from them, substantially transverse to the direction of the individual heating wires extending heat-transferring elements ( 3 b ) are interconnected ge like a mesh. 5. Rußabbrennfilter nach Anspruch 4, dadurch gekennzeichnet, daß das Verhältnis von Maschenweite des Drahtgeflechts zu Heizdrahtdurchmesser etwa eine Größenordnung beträgt.5. soot burning filter according to claim 4, characterized, that the ratio of mesh size of the wire mesh to Heating wire diameter is about an order of magnitude. 6. Rußabbrennfilter nach Anspruch 2 , dadurch gekennzeichnet, daß die einen Enden und die anderen Enden der Heizdrähte (3 a) jeweils über eine Schiene (5 a, 5 b) elektrisch verbunden sind und daß jede der beiden Verbindungsschienen einen Anschluß an eine Spannungsquelle (7) aufweist.6. soot burning filter according to claim 2, characterized in that the one ends and the other ends of the heating wires ( 3 a ) are each electrically connected via a rail ( 5 a , 5 b ) and that each of the two connecting rails has a connection to a voltage source ( 7 ). 7. Rußabbrennfilter nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Abbrennvorrichtungen für jedes einzelne Filter­ element (2) individuell steuerbar sind.7. soot burning filter according to one of claims 1 to 6, characterized in that the burning devices for each filter element ( 2 ) are individually controllable.
DE19883800723 1988-01-13 1988-01-13 Soot burn-off filter for diesel engines Granted DE3800723A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883800723 DE3800723A1 (en) 1988-01-13 1988-01-13 Soot burn-off filter for diesel engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883800723 DE3800723A1 (en) 1988-01-13 1988-01-13 Soot burn-off filter for diesel engines

Publications (2)

Publication Number Publication Date
DE3800723A1 true DE3800723A1 (en) 1989-07-27
DE3800723C2 DE3800723C2 (en) 1991-01-17

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395840A1 (en) * 1989-05-05 1990-11-07 FILTERWERK MANN & HUMMEL GMBH Exhaust gas purifying soot filter for an internal combustion engine
EP0454346A1 (en) * 1990-04-21 1991-10-30 United Kingdom Atomic Energy Authority Exhaust particulate filter
EP0504422A1 (en) * 1990-10-05 1992-09-23 Nippondenso Co., Ltd. Self-heating filter
EP0515776A1 (en) * 1991-05-29 1992-12-02 ERNST-APPARATEBAU GmbH & Co. Soot filter candle for Diesel engines
US5171341A (en) * 1991-04-05 1992-12-15 Minnesota Mining And Manufacturing Company Concentric-tube diesel particulate filter
US5174969A (en) * 1991-04-05 1992-12-29 Minnesota Mining And Manufacturing Company Roll-pack diesel particulate filter
DE4137771A1 (en) * 1991-11-16 1993-05-19 Kloeckner Humboldt Deutz Ag Electrically regenerable particle filter assembly - for diesel engine exhausts
US5224973A (en) * 1992-04-20 1993-07-06 Donaldson Company, Inc. Filter cartridge for trap apparatus
US5248481A (en) * 1992-05-11 1993-09-28 Minnesota Mining And Manufacturing Company Diesel particulate trap of perforated tubes having laterally offset cross-wound wraps of inorganic yarn
US5248482A (en) * 1991-04-05 1993-09-28 Minnesota Mining And Manufacturing Company Diesel particulate trap of perforated tubes wrapped with cross-wound inorganic yarn to form four-sided filter traps
US5258164A (en) * 1991-04-05 1993-11-02 Minnesota Mining And Manufacturing Company Electrically regenerable diesel particulate trap
US5298046A (en) * 1993-01-06 1994-03-29 Minnesota Mining And Manufacturing Company Diesel particulate filter element and filter
US5409669A (en) * 1993-01-25 1995-04-25 Minnesota Mining And Manufacturing Company Electrically regenerable diesel particulate filter cartridge and filter
EP0699828A1 (en) * 1994-08-29 1996-03-06 Isuzu Ceramics Research Institute Co., Ltd. Diesel particulate filter apparatus
US5656048A (en) * 1994-04-06 1997-08-12 Minnesota Mining And Manufacturing Company Electrically regenerable diesel particulate filter cartridge and filter
US5702494A (en) * 1995-06-09 1997-12-30 Minnesota Mining And Manufacturing Company Airbag filter assembly and method of assembly thereof
EP1126138A1 (en) * 2000-02-16 2001-08-22 Isuzu Ceramics Research Institute Co., Ltd. Particulate filter system for diesel engine
FR2843611A1 (en) * 2002-08-14 2004-02-20 Faurecia Sys Echappement Electrostatic exhaust gas filter with central collection for IC engine, uses central and peripheral electrodes and collects particles on the central electrode, and heats central electrode to burn off collected particles
DE102008059406A1 (en) 2007-12-02 2009-07-02 Beru Ag Burner for e.g. diesel engine, of lorry, has compressed air generating device and fuel supply device provided with adjustable quantity limitation valve, suction jet and/or venturi nozzle and flame tube, which is designed as closed casing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339686C1 (en) * 1993-11-22 1994-11-03 Daimler Benz Ag Electrically heatable exhaust catalytic converter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007642A1 (en) * 1980-02-29 1981-09-10 Daimler-Benz Ag, 7000 Stuttgart Soot filter in the exhaust gas flow of an internal combustion engine
JPS58124012A (en) * 1982-01-19 1983-07-23 Toyota Motor Corp Trap for particulate in exhaust gas
DE3529684A1 (en) * 1985-08-20 1987-02-26 Wengenrodt Fa Soot filter for diesel engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007642A1 (en) * 1980-02-29 1981-09-10 Daimler-Benz Ag, 7000 Stuttgart Soot filter in the exhaust gas flow of an internal combustion engine
JPS58124012A (en) * 1982-01-19 1983-07-23 Toyota Motor Corp Trap for particulate in exhaust gas
DE3529684A1 (en) * 1985-08-20 1987-02-26 Wengenrodt Fa Soot filter for diesel engines

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5042249A (en) * 1989-05-05 1991-08-27 Filterwerk Mann & Hummel Gmbh Soot filter for cleaning the exhaust from an internal combustion engine
EP0395840A1 (en) * 1989-05-05 1990-11-07 FILTERWERK MANN & HUMMEL GMBH Exhaust gas purifying soot filter for an internal combustion engine
EP0454346A1 (en) * 1990-04-21 1991-10-30 United Kingdom Atomic Energy Authority Exhaust particulate filter
US5171337A (en) * 1990-04-21 1992-12-15 United Kingdom Atomic Energy Authority Exhaust particulate filter
EP0504422A4 (en) * 1990-10-05 1994-03-16 Nippondenso Co., Ltd. Self-heating filter
EP0504422A1 (en) * 1990-10-05 1992-09-23 Nippondenso Co., Ltd. Self-heating filter
US5171341A (en) * 1991-04-05 1992-12-15 Minnesota Mining And Manufacturing Company Concentric-tube diesel particulate filter
US5174969A (en) * 1991-04-05 1992-12-29 Minnesota Mining And Manufacturing Company Roll-pack diesel particulate filter
US5248482A (en) * 1991-04-05 1993-09-28 Minnesota Mining And Manufacturing Company Diesel particulate trap of perforated tubes wrapped with cross-wound inorganic yarn to form four-sided filter traps
US5258164A (en) * 1991-04-05 1993-11-02 Minnesota Mining And Manufacturing Company Electrically regenerable diesel particulate trap
EP0515776A1 (en) * 1991-05-29 1992-12-02 ERNST-APPARATEBAU GmbH & Co. Soot filter candle for Diesel engines
DE4137771A1 (en) * 1991-11-16 1993-05-19 Kloeckner Humboldt Deutz Ag Electrically regenerable particle filter assembly - for diesel engine exhausts
US5224973A (en) * 1992-04-20 1993-07-06 Donaldson Company, Inc. Filter cartridge for trap apparatus
US5248481A (en) * 1992-05-11 1993-09-28 Minnesota Mining And Manufacturing Company Diesel particulate trap of perforated tubes having laterally offset cross-wound wraps of inorganic yarn
US5298046A (en) * 1993-01-06 1994-03-29 Minnesota Mining And Manufacturing Company Diesel particulate filter element and filter
US5409669A (en) * 1993-01-25 1995-04-25 Minnesota Mining And Manufacturing Company Electrically regenerable diesel particulate filter cartridge and filter
US5656048A (en) * 1994-04-06 1997-08-12 Minnesota Mining And Manufacturing Company Electrically regenerable diesel particulate filter cartridge and filter
EP0699828A1 (en) * 1994-08-29 1996-03-06 Isuzu Ceramics Research Institute Co., Ltd. Diesel particulate filter apparatus
US5620490A (en) * 1994-08-29 1997-04-15 Isuzu Ceramics Research Institute Co., Ltd. Diesel particulate filter apparatus
US5702494A (en) * 1995-06-09 1997-12-30 Minnesota Mining And Manufacturing Company Airbag filter assembly and method of assembly thereof
EP1126138A1 (en) * 2000-02-16 2001-08-22 Isuzu Ceramics Research Institute Co., Ltd. Particulate filter system for diesel engine
FR2843611A1 (en) * 2002-08-14 2004-02-20 Faurecia Sys Echappement Electrostatic exhaust gas filter with central collection for IC engine, uses central and peripheral electrodes and collects particles on the central electrode, and heats central electrode to burn off collected particles
DE102008059406A1 (en) 2007-12-02 2009-07-02 Beru Ag Burner for e.g. diesel engine, of lorry, has compressed air generating device and fuel supply device provided with adjustable quantity limitation valve, suction jet and/or venturi nozzle and flame tube, which is designed as closed casing

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