EP1179673A2 - Device for recirculating gas in a combustion engine - Google Patents

Device for recirculating gas in a combustion engine Download PDF

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Publication number
EP1179673A2
EP1179673A2 EP01118209A EP01118209A EP1179673A2 EP 1179673 A2 EP1179673 A2 EP 1179673A2 EP 01118209 A EP01118209 A EP 01118209A EP 01118209 A EP01118209 A EP 01118209A EP 1179673 A2 EP1179673 A2 EP 1179673A2
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EP
European Patent Office
Prior art keywords
filter element
filter
combustion engine
internal combustion
exhaust gas
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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
EP01118209A
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German (de)
French (fr)
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EP1179673B1 (en
EP1179673A3 (en
Inventor
Michael Geiger
Thomas Jessberger
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Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and Hummel GmbH
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Publication of EP1179673A2 publication Critical patent/EP1179673A2/en
Publication of EP1179673A3 publication Critical patent/EP1179673A3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/18—Thermal insulation or heat protection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities

Definitions

  • the invention relates to a device for gas recirculation in a Internal combustion engine, in particular exhaust gas or the gas from a crankcase ventilation, according to the preamble of the main claim.
  • the invention has for its object a device for recycling of exhaust gases so that there is no significant pollution more is coming.
  • the task is characterized by the distinctive features of the independent Claim 1 solved.
  • the inventive device of the type specified is in advantageously designed so that in a first embodiment in the connecting line between the exhaust duct and the connection a filter element is arranged in the intake device of the internal combustion engine is. According to a second embodiment, is also more advantageous Way in the connecting line between the connection of a crankcase ventilation and the connection to the suction device of the Internal combustion engine arranged a filter element.
  • Filter medium may preferably be a high temperature resistant medium, e.g. on Stainless steel compact, can be provided.
  • the filter element could be heavily contaminated when it is to be monitored anyway Air filter change interval can also be changed.
  • the filter element can be designed as an inline filter according to an advantageous embodiment or for reasons of assembly also in the exhaust gas recirculation flange of the suction pipe can be integrated.
  • a cyclone can Be filter element upstream. This cyclone removes coarse soot particles and thus contributes to the filter element having a longer service life.
  • a cyclone as a filter element to be used and no additional filter is to be provided. In this case it is advisable to use a multi-cell cyclone, which has a high Has separation performance.
  • a further advantageous embodiment of the invention can be seen in that cleaning is done by electrical energy. Periodically becomes the filter medium by applying an electrical voltage heated to above the burning temperature of the soot and the soot burned.
  • the Combustion gases can enter the exhaust duct via a corresponding line be fed to the internal combustion engine.
  • Another alternative to switching the filter element is available through an electrostatic precipitator. This has a very high separation performance and a low ⁇ p. Even the electrostatic separator can be cleaned by heating.
  • a further development of the invention is the use of an easy-change filter for the filter element. So that the exchange of the filter element within a certain maintenance cycle can easily be done is the filter element arranged in a removable filter.
  • This easy-change filter is similar to a spin-on oil filter and can be easily used, for example dispose of thermally.
  • Embodiments of the device for exhaust gas recirculation according to the invention in an internal combustion engine is based on the following figures explained.
  • Figure 1 is a section through a device 1 for cooling exhaust gas with an exhaust gas recirculation 2 for an internal combustion engine, not shown here shown.
  • the exhaust gas flows through in the recirculation 3 according to the arrow a filter element 4 to a connecting flange 5 on the not shown here Intake device 6 of the internal combustion engine.
  • the returned gas is freed of soot by the filter element 4 and only the cleaned hot exhaust gas to the internal combustion engine or the Intake pipe supplied.
  • the filter element 4 has here as a filter medium high temperature resistant material, namely a stainless steel compact on and is designed as an inline filter.
  • the filter element also in the exhaust gas recirculation flange Suction pipe to be integrated. Furthermore, the filter element described above 4 also arranged in a gas supply of a crankcase ventilation become.
  • the connecting flange 5 according to FIG. 1 is thermally insulated on the suction device 6 arranged.
  • Sleeve 8 and exhaust gas recirculation pipe is another in the outlet area of the pipe thermally coupled from the exhaust gas recirculation pipe 7, Sleeve 9 provided. The exiting exhaust gas flows without heating the closer ones Environment of the suction device 6 in the collector for the intake air on.
  • Figure 2 shows a cleanable filter element 4, which consists of a Steel mesh 5 on which the soot particles of the exhaust gas attach.
  • the steel knitted fabric 12 is cleaned with a not shown here Voltage source connected via connections 10 and 11. When putting on An electric voltage at these connections heats up the knitted steel 12 to above the ignition temperature of the deposited soot. The soot is burned off and the resulting combustion gases via a flow reversal and a flow according to arrows 13, 14 supplied to the exhaust gas of the internal combustion engine.
  • FIG. 3a shows the production of the filter element 4 from, for example, one Steel fabric.
  • this is a wire conductor 15 consisting of a Large number of individual wires with electrical connections 10 and 11.
  • This wire conductor is inserted into the housing 16 of the filter element and closed the housing.
  • the wire conductor can be easier to maintain Way be removed from the housing and a new wire conductor can be insert easily (Figure 3b).
  • Figure 4a shows a schematic representation of an easy-change filter in which a steel mesh 12 is arranged.
  • This easy-change filter 16 is on one Filter head 17 attached to the input 18 and output 19 for the exhaust gas is connected.
  • FIG. 4b also shows a spin-on filter 16 in a schematic representation being in the filter head 17 in addition to the connections for input and an outlet of the exhaust gas, an exhaust gas recirculation valve 20 is provided, which controls the supply of the main gas to the suction device.
  • the Exhaust gas recirculation valve 20 is arranged on the clean side of the filter element, so that contamination of this valve is prevented.
  • Figure 5 shows a cooling device for the exhaust gas recirculation.
  • the exhaust gas will via the line 21 to the filter element 4 and flows over cleaned the exhaust gas recirculation connector 22 in the intake manifold plenum 23.
  • Zum Cooling the exhaust gas recirculation cooling water connections 24, 25 are provided.
  • the cooling water flows around the filter element 4 and ensures one constant outlet temperature of the exhaust gas in the intake manifold plenum 23.
  • Die Intake air mixed with exhaust gas passes through the intake flange 26 to the Internal combustion engine or the internal combustion engine, not shown here.

Abstract

The exhaust gas recirculating circuit for a motor vehicle internal combustion engine has a connecting pipe (2) between the exhaust and engine intake duct. A filter (4) is positioned in the connecting pipe. The filter can be a high temperature resistant medium such as a stainless steel pressing.

Description

Die Erfindung betrifft eine Vorrichtung zur Gasrückführung bei einem Verbrennungsmotor, insbesondere von Abgas oder das Gas einer Kurbelgehäuseentlüftung, nach dem Oberbegriff des Hauptanspruchs.The invention relates to a device for gas recirculation in a Internal combustion engine, in particular exhaust gas or the gas from a crankcase ventilation, according to the preamble of the main claim.

Es ist beispielsweise aus der DE 30 34 971 C2 bekannt, dass Abgase des Verbrennungsmotors vom Abgasrohr dem Ansaugkanal für den Verbrennungsmotor wieder zugeführt werden. Bei diesen bekannten Lösungen werden die rückgeführten Abgase ungefiltert in das Saugrohr eingespeist. Bei relativ niedrigen Rückführraten stellt dies kein Problem dar, bei hohen Rückführraten von 40-50%, wie sie z.B. bei Verbrennungsmotoren mit Direkteinspritzung notwendig sind, ist der Rußanfall jedoch so stark ausgeprägt, dass hier mit starker Verschmutzung im Saugrohr zu rechnen ist.It is known, for example from DE 30 34 971 C2, that exhaust gases from the Internal combustion engine from the exhaust pipe to the intake duct for the internal combustion engine be fed again. In these known solutions the recirculated exhaust gases are fed unfiltered into the intake manifold. at relatively low recycle rates, this is not a problem at high Return rates of 40-50%, e.g. for internal combustion engines with direct injection the soot is so pronounced, that heavy contamination in the intake manifold is to be expected here.

Insbesondere in einer kombinierten Anwendung von einer Abgasrückführung und einer Gaszuführung über eine Kurbelgehäuseentlüftung (sog. blow-by) entsteht hier in nachteiliger Weise eine klebrige und stark haftende Schmutzmasse. Durch diese Ablagerungen an den Saugrohrwänden verkleinern sich die Strömungsquerschnitte. Bei einer Einleitung der Gase in Schaltsaugrohre vor den Schaltelementen ist außerdem durch Ablagerungen an den Schaltelementen deren Funktion (Schaltfunktion, Dichtfunktion) negativ beeinflusst. Weiterhin können auch Ablagerungen an den Einlassventilen die Funktion beeinträchtigen. Especially in a combined application of exhaust gas recirculation and a gas supply via a crankcase ventilation (so-called blow-by) disadvantageously creates a sticky and strong adhesive Dirt ground. Reduce these deposits on the intake manifold walls the flow cross-sections. When the gases are introduced into Switching suction pipes in front of the switching elements is also due to deposits on the switching elements their function (switching function, sealing function) negative affected. Deposits on the intake valves can also occur impair the function.

Aufgabenstellungtask

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Rückführung von Abgasen so fortzubilden, dass es zu keiner wesentlichen Verschmutzung mehr kommt.The invention has for its object a device for recycling of exhaust gases so that there is no significant pollution more is coming.

Lösung der AufgabeSolution of the task

Die Aufgabe wird durch die kennzeichnenden Merkmale des unabhängigen Anspruchs 1 gelöst.The task is characterized by the distinctive features of the independent Claim 1 solved.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Vorrichtung der eingangs angegebenen Art ist in vorteilhafter Weise so ausgebildet, dass bei einer ersten Ausführungsform in der Verbindungsleitung zwischen dem Abgaskanal und dem Anschluss an der Ansaugvorrichtung des Verbrennungsmotors ein Filterelement angeordnet ist. Nach einer zweiten Ausführungsform ist in ebenfalls vorteilhafter Weise in der Verbindungsleitung zwischen dem Anschluss einer Kurbelgehäuseentlüftung und dem Anschluss an der Ansaugvorrichtung des Verbrennungsmotors ein Filterelement angeordnet.The inventive device of the type specified is in advantageously designed so that in a first embodiment in the connecting line between the exhaust duct and the connection a filter element is arranged in the intake device of the internal combustion engine is. According to a second embodiment, is also more advantageous Way in the connecting line between the connection of a crankcase ventilation and the connection to the suction device of the Internal combustion engine arranged a filter element.

Durch Vorschalten des erfindungsgemäßen Filters wird auf einfache Weise das rückgeführte Gas vom Ruß befreit und es wird beispielsweise nur das heiße Abgas dem Verbrennungsmotor bzw. dem Saugrohr zugeführt. Als Filtermedium kann vorzugsweise ein hochtemperaturfestes Medium, z.B. ein Edelstahlpressling, vorgesehen werden. Durch die eventuell zu erwartende hohe Verschmutzung könnte das Filterelement beim ohnehin zu überwachenden Luftfilterwechselintervall mit gewechselt werden. Das Filterelement kann gemäß einer vorteilhaften Ausführungsform als Inlinefilter ausgeführt werden oder aus Montagegründen auch in den Abgasrückführungsflansch des Saugrohres integriert werden.By connecting the filter according to the invention in a simple manner the recirculated gas is freed from soot and, for example, only that hot exhaust gas is fed to the internal combustion engine or the intake manifold. As Filter medium may preferably be a high temperature resistant medium, e.g. on Stainless steel compact, can be provided. By the possibly to be expected The filter element could be heavily contaminated when it is to be monitored anyway Air filter change interval can also be changed. The filter element can be designed as an inline filter according to an advantageous embodiment or for reasons of assembly also in the exhaust gas recirculation flange of the suction pipe can be integrated.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung kann ein Zyklon dem Filterelement vorgeschaltet sein. Dieser Zyklon entfernt grobe Rußpartikel und trägt damit dazu bei, dass das Filterelement eine längere Standzeit aufweist. Selbstverständlich besteht auch die Möglichkeit, ein Zyklon als Filterelement einzusetzen und kein zusätzliches Filter vorzusehen. In diesem Fall ist es zweckmäßig ein Mehrzellenzyklon zu verwenden, welches eine hohe Abscheideleistung aufweist.According to an advantageous embodiment of the invention, a cyclone can Be filter element upstream. This cyclone removes coarse soot particles and thus contributes to the filter element having a longer service life. Of course there is also the option of using a cyclone as a filter element to be used and no additional filter is to be provided. In this case it is advisable to use a multi-cell cyclone, which has a high Has separation performance.

Eine weitere vorteilhafte Ausgestaltung der Erfindung ist darin zu sehen, dass die Abreinigung durch elektrische Energie erfolgt. In regelmäßigen Abständen wird durch Anlegen einer elektrischen Spannung das Filtermedium bis über die Brenntemperatur des Rußes erhitzt und der Ruß verbrannt. Die Verbrennungsgase können über eine entsprechende Leitung dem Abgaskanal der Brennkraftmaschine zugeführt werden.A further advantageous embodiment of the invention can be seen in that cleaning is done by electrical energy. Periodically becomes the filter medium by applying an electrical voltage heated to above the burning temperature of the soot and the soot burned. The Combustion gases can enter the exhaust duct via a corresponding line be fed to the internal combustion engine.

Eine weitere Alternative zu der Schaltung des Filterelements bietet sich durch einen elektrostatischen Abscheider an. Dieser hat eine sehr hohe Abscheideleistung und ein geringes Δp. Auch der elektrostatische Abscheider läßt sich durch erhitzen abreinigen.Another alternative to switching the filter element is available through an electrostatic precipitator. This has a very high separation performance and a low Δp. Even the electrostatic separator can be cleaned by heating.

Eine Weiterbildung der Erfindung liegt in der Verwendung eines Wechselfilters für das Filterelement. Damit der Austausch des Filterelements innerhalb eines bestimmten Wartungszyklusses einfach erfolgen kann, ist das Filterelement in einem abschraubbaren Wechselfilter angeordnet. Dieser Wechselfilter ist einem Ölwechselfilter ähnlich und läßt sich problemlos beispielsweise thermisch entsorgen.A further development of the invention is the use of an easy-change filter for the filter element. So that the exchange of the filter element within a certain maintenance cycle can easily be done is the filter element arranged in a removable filter. This easy-change filter is similar to a spin-on oil filter and can be easily used, for example dispose of thermally.

Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei der Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird.These and other features of preferred developments of the invention go beyond the claims also from the description and the Drawings stand out, the individual features each individually or more in the form of sub-combinations in the embodiment of the invention and in other fields be realized and advantageous as well as representable protective versions for which here Protection is claimed.

Zeichnungendrawings

Ausführungsbeispiele der erfindungsgemäßen Vorrichtung zur Abgasrückführung bei einem Verbrennungsmotor wird anhand der nachfolgenden Figuren erläutert.Embodiments of the device for exhaust gas recirculation according to the invention in an internal combustion engine is based on the following figures explained.

Es zeigt

  • Figur 1 einen Schnitt durch eine Vorrichtung,
  • Figur 2 ein abreinigbares Filterelement,
  • Figur 3a ein Filterelement im Ausgangszustand,
  • Figur 3b das in Figur 3a dargestellte Filterelement in eingebautem Zustand,
  • Figur 4a ein Wechselfilter,
  • Figur 4b eine Variante eines Wechselfilters,
  • Figur 5 eine Kühleinrichtung für die AGR.
    • It shows
  • FIG. 1 shows a section through a device,
  • FIG. 2 shows a filter element that can be cleaned,
  • 3a shows a filter element in the initial state,
  • FIG. 3b shows the filter element shown in FIG. 3a in the installed state,
  • FIG. 4a an exchangeable filter,
  • FIG. 4b shows a variant of a spin-on filter,
  • Figure 5 shows a cooling device for the EGR.

    • Beschreibung der AusführungsbeispieleDescription of the embodiments

    In Figur 1 ist ein Schnitt durch eine Vorrichtung 1 zur Kühlung von Abgas mit einer Abgasrückführung 2 für einen hier nicht gezeigten Verbrennungsmotor gezeigt. Das Abgas strömt an in der Rückführung 3 gemäß dem Pfeil durch ein Filterelement 4 zu einem Anschlussflansch 5 an der hier nicht näher gezeigten Ansaugvorrichtung 6 des Verbrennungsmotors.In Figure 1 is a section through a device 1 for cooling exhaust gas with an exhaust gas recirculation 2 for an internal combustion engine, not shown here shown. The exhaust gas flows through in the recirculation 3 according to the arrow a filter element 4 to a connecting flange 5 on the not shown here Intake device 6 of the internal combustion engine.

    Durch das Filterelement 4 wird das rückgeführte Gas vom Abgasruß befreit und nur das gereinigte heiße Abgas dem Verbrennungsmotor bzw. dem Saugrohr zugeführt. Das Filterelement 4 weist hier als Filtermedium ein hochtemperaturfestes Material, nämlich einen Edelstahlpressling auf und ist als Inlinefilter ausgeführt.The returned gas is freed of soot by the filter element 4 and only the cleaned hot exhaust gas to the internal combustion engine or the Intake pipe supplied. The filter element 4 has here as a filter medium high temperature resistant material, namely a stainless steel compact on and is designed as an inline filter.

    Gemäß eines anderen hier nicht dargestellten vorteilhaften Ausführungsbeispiels kann das Filterelement auch in den Abgasrückführungsflansch des Saugrohres integriert sein. Weiterhin kann das oben beschriebene Filterelement 4 auch in einer Gaszuführung einer Kurbelgehäuseentlüftung angeordnet werden.According to another advantageous embodiment not shown here can the filter element also in the exhaust gas recirculation flange Suction pipe to be integrated. Furthermore, the filter element described above 4 also arranged in a gas supply of a crankcase ventilation become.

    Der Anschlußflansch 5 gemäß Figur 1 ist thermisch isoliert an der Ansaugvorrichtung 6 angeordnet. Hierzu ist das Abgasrückführrohr 7 mit einer Hülse 8 versehen, diese Hülse hat Kontakt zu dem Anschlußflansch 5. Zwischen Hülse 8 und Abgasrückführrohr ist im Austrittsbereich des Rohres eine weitere thermisch von dem Abgasrückführrohr 7, im wesentlichen gentkoppelte, Hülse 9 vorgesehen. Das austretende Abgas strömt ohne Erhitzen der näheren Umgebung der Ansaugvorrichtung 6 in den Sammler für die Ansaugluft ein.The connecting flange 5 according to FIG. 1 is thermally insulated on the suction device 6 arranged. For this purpose, the exhaust gas recirculation pipe 7 with a sleeve 8 provided, this sleeve is in contact with the connecting flange 5. Between Sleeve 8 and exhaust gas recirculation pipe is another in the outlet area of the pipe thermally coupled from the exhaust gas recirculation pipe 7, Sleeve 9 provided. The exiting exhaust gas flows without heating the closer ones Environment of the suction device 6 in the collector for the intake air on.

    Figur 2 zeigt ein abreinigbares Filterelement 4, dieses besteht aus einem Stahlgestrick 5 an welchem sich die Rußpartikel des Abgases anlagern. Zur Abreinigung des Stahlgestricks 12 ist dieses mit einer hier nicht gezeigten Spannungsquelle über die Anschlüsse 10 und 11 verbunden. Beim Anlegen einer elektrischen Spannung an diesen Anschlüssen erhitzt sich das Stahlgestrick 12 bis über die Zündtemperatur des angelagerten Rußes. Der Ruß wird abgebrannt und die dabei entstehenden Verbrennungsgase werden über eine Strömungsumkehr und eine Strömung gemäß den Pfeilen 13, 14 dem Abgas des Verbrennungsmotors zugeführt. Figure 2 shows a cleanable filter element 4, which consists of a Steel mesh 5 on which the soot particles of the exhaust gas attach. to The steel knitted fabric 12 is cleaned with a not shown here Voltage source connected via connections 10 and 11. When putting on An electric voltage at these connections heats up the knitted steel 12 to above the ignition temperature of the deposited soot. The soot is burned off and the resulting combustion gases via a flow reversal and a flow according to arrows 13, 14 supplied to the exhaust gas of the internal combustion engine.

    Figur 3a zeigt die Herstellung des Filterelements 4 aus beispielsweise einem Stahlgestrick. Zunächst ist dieses ein Drahtleiter 15 bestehend aus einer Vielzahl von Einzeldrähten mit den elektrischen Anschlüssen 10 und 11. Dieser Drahtleiter wird in das Gehäuse 16 des Filterelements eingelegt und das Gehäuse verschlossen. Der Drahtleiter kann zur Wartung in einfacher Weise aus dem Gehäuse entfernt werden und ein neuer Drahtleiter läßt sich problemlos einsetzen (Figur 3b).FIG. 3a shows the production of the filter element 4 from, for example, one Steel fabric. First of all, this is a wire conductor 15 consisting of a Large number of individual wires with electrical connections 10 and 11. This wire conductor is inserted into the housing 16 of the filter element and closed the housing. The wire conductor can be easier to maintain Way be removed from the housing and a new wire conductor can be insert easily (Figure 3b).

    Figur 4a zeigt in einer schematischen Darstellung ein Wechselfilter in welchem ein Stahlgestrick 12 angeordnet ist. Dieses Wechselfilter 16 ist an einem Filterkopf 17 befestigt an dem der Eingang 18 und der Ausgang 19 für das Abgas angeschlossen ist.Figure 4a shows a schematic representation of an easy-change filter in which a steel mesh 12 is arranged. This easy-change filter 16 is on one Filter head 17 attached to the input 18 and output 19 for the exhaust gas is connected.

    Figur 4b zeigt ebenfalls ein Wechselfilter 16 in einer schematischen Darstellung wobei in dem Filterkopf 17 zusätzlich zu den Anschlüssen für Eingang und Ausgang des Abgases ein Abgasrückführventil 20 vorgesehen ist, welches die Zuführung des Hauptgases zu der Ansaugvorrichtung steuert. Das Abgasrückführventil 20 ist auf der Reinseite des Filterelements angeordnet, so dass eine Verschmutzung dieses Ventils verhindert wird.FIG. 4b also shows a spin-on filter 16 in a schematic representation being in the filter head 17 in addition to the connections for input and an outlet of the exhaust gas, an exhaust gas recirculation valve 20 is provided, which controls the supply of the main gas to the suction device. The Exhaust gas recirculation valve 20 is arranged on the clean side of the filter element, so that contamination of this valve is prevented.

    Figur 5 zeigt eine Kühleinrichtung für die Abgasrückführung. Das Abgas wird über die Leitung 21 dem Filterelement 4 zugeführt und strömt gereinigt über den Abgasrückführanschlußstutzen 22 in das Saugrohrplenum 23. Zum Kühlen der Abgasrückführung sind Kühlwasseranschlüsse 24, 25 vorgesehen. Das Kühlwasser umspült das Filterelement 4 und gewährleistet eine konstante Austrittstemperatur des Abgases in das Saugrohrplenum 23. Die mit Abgas vermischte Ansaugluft gelangt über den Ansaugflansch 26 zu der hier nicht dargestellten Brennkraftmaschine bzw. den Verbrennungsmotor.Figure 5 shows a cooling device for the exhaust gas recirculation. The exhaust gas will via the line 21 to the filter element 4 and flows over cleaned the exhaust gas recirculation connector 22 in the intake manifold plenum 23. Zum Cooling the exhaust gas recirculation cooling water connections 24, 25 are provided. The cooling water flows around the filter element 4 and ensures one constant outlet temperature of the exhaust gas in the intake manifold plenum 23. Die Intake air mixed with exhaust gas passes through the intake flange 26 to the Internal combustion engine or the internal combustion engine, not shown here.

    Claims (10)

    Vorrichtung zur Gasrückführung bei einem Verbrennungsmotor über eine Verbindungsleitung (2), dadurch gekennzeichnet, dass in der Verbindungsleitung (2) zwischen dem Abgaskanal und dem Anschluss an der Ansaugvorrichtung des Verbrennungsmotors ein Filterelement (4) angeordnet ist. Device for gas recirculation in an internal combustion engine via a connecting line (2), characterized in that A filter element (4) is arranged in the connecting line (2) between the exhaust gas duct and the connection on the intake device of the internal combustion engine. Vorrichtung zur Gasrückführung bei einem Verbrennungsmotor über eine Verbindungsleitung, dadurch gekennzeichnet, dass in der Verbindungsleitung zwischen dem Anschluss einer Kurbelgehäuseentlüftung und dem Anschluss an der Ansaugvorrichtung des Verbrennungsmotors ein Filterelement angeordnet ist. Device for gas recirculation in an internal combustion engine via a connecting line, characterized in that a filter element is arranged in the connecting line between the connection of a crankcase ventilation and the connection on the intake device of the internal combustion engine. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Filterelement (4) ein hochtemperaturfestes Medium, vorzugsweise ein Edelstahlpressling ein Keramikgarnfilter, ein Glasfaserpressling oder ein Mineralfaserpressling. Device according to claim 1 or 2, characterized in that the filter element (4) is a medium which is resistant to high temperatures, preferably a stainless steel compact, a ceramic yarn filter, a glass fiber compact or a mineral fiber compact. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass das Filterelement (4) in der Verbindungsleitung als Inlinefilter angeordnet ist. Device according to claim 1, 2 or 3, characterized in that the filter element (4) is arranged in the connecting line as an inline filter. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass das Filterelement im Anschlussflansch der Ansaugvorrichtung angeordnet ist. Device according to claim 1, 2 or 3, characterized in that the filter element is arranged in the connecting flange of the suction device. Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass dem Filterelement ein Partikelabscheider mittels eines Zyklons oder mehrere Zyklonzellen vorgeschaltet ist. Device according to one of the preceding claims, characterized in that a particle separator is connected upstream of the filter element by means of a cyclone or several cyclone cells. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Filterelement ein Zyklon oder mehrere Zyklonzellen ist. Device according to claim 1, characterized in that the filter element is one or more cyclone cells. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass zur Erhöhung der Standzeit das hochtemperaturfeste Medium durch Zufuhr elektrischer Energie bis über die Brenntemperatur des Rußes erhitzt wird und zyklisch eine Abreinigung erfolgt. Apparatus according to claim 3, characterized in that To increase the service life, the high-temperature-resistant medium is heated by supplying electrical energy to above the burning temperature of the soot and cleaning is carried out cyclically. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Filterelement ein elektrostatischer Abscheider ist. Device according to claim 1, characterized in that the filter element is an electrostatic separator. Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Filterelement ein Wechselfilter ist, welcher insbesondere im Abgasrückführungsventil integrierbar ist oder im Saugrohr integriert werden kann. Device according to one of the preceding claims, characterized in that the filter element is an exchangeable filter which can be integrated in particular in the exhaust gas recirculation valve or can be integrated in the intake manifold.
    EP01118209A 2000-08-07 2001-07-28 Device for recirculating gas in a combustion engine Expired - Lifetime EP1179673B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE20013534U 2000-08-07
    DE20013534U DE20013534U1 (en) 2000-08-07 2000-08-07 Device for recirculating gas on an internal combustion engine

    Publications (3)

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    EP1179673A2 true EP1179673A2 (en) 2002-02-13
    EP1179673A3 EP1179673A3 (en) 2002-12-18
    EP1179673B1 EP1179673B1 (en) 2005-12-28

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    EP01118209A Expired - Lifetime EP1179673B1 (en) 2000-08-07 2001-07-28 Device for recirculating gas in a combustion engine

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    US (1) US6530366B2 (en)
    EP (1) EP1179673B1 (en)
    JP (1) JP2002130058A (en)
    AT (1) ATE314571T1 (en)
    DE (2) DE20013534U1 (en)

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    Also Published As

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    US20020023629A1 (en) 2002-02-28
    JP2002130058A (en) 2002-05-09
    DE50108512D1 (en) 2006-02-02
    DE20013534U1 (en) 2000-10-12
    EP1179673B1 (en) 2005-12-28
    EP1179673A3 (en) 2002-12-18
    US6530366B2 (en) 2003-03-11
    ATE314571T1 (en) 2006-01-15

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