WO1998005854A1 - Venting device for an internal combustion engine crankcase - Google Patents

Venting device for an internal combustion engine crankcase Download PDF

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Publication number
WO1998005854A1
WO1998005854A1 PCT/EP1997/004210 EP9704210W WO9805854A1 WO 1998005854 A1 WO1998005854 A1 WO 1998005854A1 EP 9704210 W EP9704210 W EP 9704210W WO 9805854 A1 WO9805854 A1 WO 9805854A1
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WO
WIPO (PCT)
Prior art keywords
oil
separator
venting device
gas
crankcase
Prior art date
Application number
PCT/EP1997/004210
Other languages
German (de)
French (fr)
Inventor
Günter Kampichler
Herbert Geier
Original Assignee
Motorenfabrik Hatz Gmbh & Co. Kg
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 Motorenfabrik Hatz Gmbh & Co. Kg filed Critical Motorenfabrik Hatz Gmbh & Co. Kg
Priority to DE59706981T priority Critical patent/DE59706981D1/en
Priority to JP10507605A priority patent/JP2000515603A/en
Priority to EP97940057A priority patent/EP0916018B1/en
Publication of WO1998005854A1 publication Critical patent/WO1998005854A1/en
Priority to US09/241,752 priority patent/US6092492A/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
    • 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
    • F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase

Definitions

  • Ventilation device for the crankcase of an internal combustion engine
  • the invention relates to a ventilation device for the crankcase of an internal combustion engine, in particular for a single-cylinder diesel engine, with a ventilation valve.
  • Venting devices of this type are already known from the prior art, the venting of the crankcase generally taking place via a line in the intake tract. It is a completely environmentally friendly solution, since the oil that is released when venting is burned immediately in the combustion chamber.
  • the disadvantage is that in motors with a large inclined position, e.g. in the case of ship engines or engines that have fallen over, there is a risk that the oil will get into the combustion chamber and the engine will "run away" and self-destruct due to excessive speed.
  • the present invention is therefore based on the object of providing a ventilation device which effectively prevents the oil located in the ventilation device from penetrating into the combustion chamber, even in the case of an inclined position or an overturned internal combustion engine.
  • the invention is characterized in that a channel for the gas-oil mixture is provided in the flow direction behind the vent valve, which ends in an oil separator, a connection to the environment being provided behind the oil separator for the gas.
  • crankcase By discharging the flammable gas mixture to the atmosphere, the crankcase is effectively vented and the ignitable mixture is prevented from being fed into the combustion chamber.
  • an advantageous embodiment of the present invention provides that the liquid area of the oil separator is connected to a separator for removing the oil.
  • This separator is a small chamber in which the oil is collected.
  • a further advantageous embodiment of the present invention is characterized in that a channel is provided for connecting the separator to the suction side of the oil pump, the cross section of which is smaller than that of the channel for the gas Air mixture.
  • the connection to the suction side of the oil pump ensures a constant suction, which ensures that the oil is safely returned to the crankcase regardless of the engine position.
  • the small pipe cross-section advantageously ensures that, above all, oil is drawn in from the separator. The residual air that is sucked in is harmless to the system.
  • a further advantageous embodiment of the present invention provides that the oil separator has a gas-permeable suction pad for receiving the oil.
  • the suction pad absorbs the oil immediately, which prevents the oil from splashing off.
  • the suction pad fulfills the function of a dust filter, i.e. Impurities are partly recorded, partly deposited on the surface.
  • simple and inexpensive maintenance is ensured by replacing the suction pad.
  • connection of the separator to the suction side of the oil pump has a closable opening for refilling the oil during operation.
  • This can be advantageous, for example, for refilling oil during the operation of a ship's diesel engine, since it is not necessary to switch off the engine on long journeys.
  • an advantageous embodiment of the present invention provides that the oil separator is formed by a vertical tube with an oblique opening. This provides a large cross-section for the gas mixture in the oil separator, which ensures that the oil separator functions properly.
  • the vertical tube is surrounded by a concentric jacket, which is provided at its upper end with an opening to the environment. This construction allows simple and inexpensive manufacture.
  • a particularly advantageous embodiment provides that the vertical tube forms a tip at the end of the oblique opening, which can be inserted into the suction pad made of felt.
  • this ensures that the oil running along the inside of the pipe is safely sucked up by utilizing the capillary forces, and on the other hand the use of felt ensures that the vertical pipe can be easily inserted into the suction pad.
  • the use of felt as a suction pad is a simple and inexpensive solution.
  • an even more advantageous embodiment provides that the connecting lines are arranged outside the motor housing. This ensures a cool cable routing, which means a Coking of the line cross-sections is prevented, ie the line remains free.
  • FIG. 1 is a schematic representation of a ventilation device of the type according to the invention
  • Fig. 2 is a sectional view of an oil separator of the type according to the invention.
  • the crankcase 1 is connected to a vent valve 2, which may be a diaphragm valve, for example, wherein the vent valve 2 is connected to an oil separator 3, which has an opening 4 to the atmosphere at one end and at its other outlet is connected to a filter 5.
  • the filter 5 is in turn connected to the suction side of the oil pump 6, which in turn sucks the oil from an oil sump 7 and delivers it back into the crankcase 1 on its delivery side.
  • a filler neck 8 is additionally shown, in which oil can also be supplied to the system.
  • the gas-oil mixture can escape via the vent valve 2 into the line duct 9 provided for this purpose.
  • the gas is then separated from the oil and discharged to the atmosphere through the opening 4, whereas the oil from the one designed as a suction pad Filter 5 is sucked up.
  • the oil filtered in this way flows from there into a small chamber, the so-called separator 11.
  • the oil collected here is sucked in via the oil line 10 from the suction side of the oil pump 6.
  • the oil line 10 has a cross section of approximately 0.5 mm, which is considerably smaller than the cross section of the line 9.
  • Fig. 2 shows a section through the oil separator according to the invention. This is arranged outside of the motor housing 12.
  • the line channel for the gas-oil mixture 9, the oblique opening 13, the direction of flow of the gas indicated by arrow A and the suction pad 5, the separator 11 and the oil line 10 can be seen.
  • the sheath 14, the sealing closure 15 and the atmosphere opening 4 are also shown.
  • the oil separator is fastened to the air filter housing 16 by means of a holding device.
  • a gas-oil mixture passes through the line 9 from the crankcase into the device.
  • the heavier oil particles slide due to the sharp deflection of the air in the direction of arrow A. down on the high wall 17 and are sucked up by the suction pad 5, which is connected to the line 9 by the tip 18.
  • the air rises in the jacket 14 and can only escape into the environment through the opening 4.
  • the oil collected and filtered in the suction pad 5 made of felt drips off into a chamber 11, the so-called separator, and is sucked in by the oil pump through the oil pipe 10, which has a significantly narrower diameter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

The invention concerns a venting device for an internal combustion engine crankcase (1), in particular for a single-cylinder diesel engine. The venting device comprises a venting valve (2) and, in the direction of flow, downstream of the venting valve (2) a duct (9) for the oil-gas mixture. The duct (9) terminates in an oil separator (3), downstream of which a connection (4) to the environment is provided for the gas.

Description

Entlüftungsvorrichtung für das Kurbelgehäuse einer Brennkraftmaschine Ventilation device for the crankcase of an internal combustion engine
Die Erfindung betrifft eine Entlüftungsvorrichtung für das Kurbelgehäuse einer Brennkraftmaschine, insbesondere für einen Einzylinder-Dieselmotor, mit einem Entlüftungsventil.The invention relates to a ventilation device for the crankcase of an internal combustion engine, in particular for a single-cylinder diesel engine, with a ventilation valve.
Derartige Entlüftungsvorrichtungen sind aus dem Stand der Technik bereits bekannt, wobei die Entlüftung des Kurbelgehäuses in der Regel über eine Leitung in den Ansaugtrakt erfolgt . Es handelt sich dabei um eine durchaus umweltfreundliche Lösung, da das Öl, welches beim Entlüften frei wird, sofort im Verbrennungraum verbrannt wird. Der Nachteil besteht darin, daß bei Motoren mit großer Schräglage, z.B. bei Schiffsmotoren oder umgefallenen Motoren die Gefahr besteht, daß das Öl in den Verbrennungsraum gelangt und der Motor damit "durchgeht" und sich aufgrund von überhöhter Drehzahl selbst zerstört .Venting devices of this type are already known from the prior art, the venting of the crankcase generally taking place via a line in the intake tract. It is a completely environmentally friendly solution, since the oil that is released when venting is burned immediately in the combustion chamber. The disadvantage is that in motors with a large inclined position, e.g. in the case of ship engines or engines that have fallen over, there is a risk that the oil will get into the combustion chamber and the engine will "run away" and self-destruct due to excessive speed.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Entlüftungsvorrichtung zu schaffen, die selbst bei erhöhter Schräglage bzw. umgekippter Brennkraftmaschine wirkungsvoll ein Eindringen des sich in der Entlüftungsvorrichtung befindenden Öls in den Verbrennungsraum verhindert .The present invention is therefore based on the object of providing a ventilation device which effectively prevents the oil located in the ventilation device from penetrating into the combustion chamber, even in the case of an inclined position or an overturned internal combustion engine.
Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung mit den Merkmalen des Anspruchs l gelöst. Dabei zeichnet sich die Erfindung dadurch aus, daß in Strömungsrichtung hinter dem Entlüftungsventil ein Kanal für das Gas-Öl-Gemisch vorgesehen ist, der in einen Ölabscheider endet, wobei hinter dem Ölabscheider für das Gas eine Verbindung zur Umgebung vorgesehen ist.This object is achieved according to the invention by a device with the features of claim 1. The invention is characterized in that a channel for the gas-oil mixture is provided in the flow direction behind the vent valve, which ends in an oil separator, a connection to the environment being provided behind the oil separator for the gas.
Durch Ableiten des brennbaren Gasgemischs an die Atmosphäre wird das Kurbelgehäuse wirkungsvoll entlüftet und eine Zufuhr des zündfähigen Gemisches in den Verbrennungsraum vermieden.By discharging the flammable gas mixture to the atmosphere, the crankcase is effectively vented and the ignitable mixture is prevented from being fed into the combustion chamber.
Des weiteren sieht eine vorteilhafte Ausführungsform der vorliegenden Erfindung vor, daß der Flüssigkeits- bereich des Ölabscheiders zum Abführen des Öls mit einem Separator verbunden ist. Dieser Separator ist eine kleine Kammer, in der das Öl gesammelt ist.Furthermore, an advantageous embodiment of the present invention provides that the liquid area of the oil separator is connected to a separator for removing the oil. This separator is a small chamber in which the oil is collected.
Weiterhin ist es vorteilhaft, daß eine Verbindung des Separators mit der Saugseite der Ölpumpe zum Rückführen des Öls in das Kurbelgehäuse vorgesehen ist . Dadurch tritt beim Entlüften des Kurbelgehäuses nahezu kein Ölverlust auf, da das Öl im Ölabscheider abgeschieden und dem Kurbelgehäuse-Olkreislauf wieder zugeführt wird. Die gasförmigen Bestandteile entweichen, wie bereits beschrieben, in die Atmosphäre.It is also advantageous that a connection of the separator to the suction side of the oil pump is provided for returning the oil into the crankcase. As a result, there is almost no oil loss when the crankcase is vented, since the oil is separated in the oil separator and returned to the crankcase oil circuit. As already described, the gaseous components escape into the atmosphere.
Eine weitere vorteilhafte Ausführungsform der vorliegenden Erfindung weist sich dadurch aus, daß zur Verbindung des Separators mit der Saugseite der Ölpumpe ein Kanal vorgesehen ist, dessen Querschnitt kleiner ist als derjenige des Kanals für das Gas- Luftgemisch. Durch die Verbindung mit der Saugseite der Ölpumpe wird ein ständiger Sog gewährleistet, der unabhängig von der Motorlage ein sicheres Rückleiten des Öls in das Kurbelgehäuse gewährleistet. Durch den geringen Rohrleitungsquerschnitt wird in vorteilhafter Weise sichergestellt, daß vor allem Öl aus dem Separator angesaugt wird. Die dennoch mitangesaugte Restluft ist für das System unschädlich.A further advantageous embodiment of the present invention is characterized in that a channel is provided for connecting the separator to the suction side of the oil pump, the cross section of which is smaller than that of the channel for the gas Air mixture. The connection to the suction side of the oil pump ensures a constant suction, which ensures that the oil is safely returned to the crankcase regardless of the engine position. The small pipe cross-section advantageously ensures that, above all, oil is drawn in from the separator. The residual air that is sucked in is harmless to the system.
Eine weitere vorteilhafte Ausführungsform der vorliegenden Erfindung sieht vor, daß der Ölabscheider ein gasdurchlässiges Saugpolster zum Aufnehmen des Öls aufweist . Hierdurch wird in überraschend einfacher Weise eine sichere Trennung von Gas und Öl gewährleistet. Das Saugpolster saugt das Öl sofort auf, wodurch ein Abspritzen des Öls vermieden wird. Zusätzlich erfüllt das Saugpolster die Funktion eines Staubfilters, d.h. Verunreinigungen werden z.T. aufgenommen, z.T. an der Oberfläche abgelagert. Außerdem wird durch den Austausch des Saugpolsters eine einfache und kostengünstige Wartung gewährleistet.A further advantageous embodiment of the present invention provides that the oil separator has a gas-permeable suction pad for receiving the oil. This ensures surprisingly simple separation of gas and oil. The suction pad absorbs the oil immediately, which prevents the oil from splashing off. In addition, the suction pad fulfills the function of a dust filter, i.e. Impurities are partly recorded, partly deposited on the surface. In addition, simple and inexpensive maintenance is ensured by replacing the suction pad.
Weiterhin ist es vorteilhaft, daß die Verbindung des Separators mit der Saugseite der Ölpumpe eine verschließbare Öffnung zum Nachfüllen des Öls während des Betriebs aufweist. Dies kann z.B. vorteilhaft für das Nachfüllen von Öl während des Betriebes eines Schiffs-Dieselmotors sein, da hier bei langen Streckenfahrten kein Abstellen des Motors erforderlich ist. Des weiteren sieht eine vorteilhafte Ausführungsform der vorliegenden Erfindung vor, daß der Ölabscheider durch ein vertikales Rohr mit einer schrägen Öffnung gebildet wird. Hierdurch ist ein großer Abströmquer- schnitt für das Gasgemisch im Ölabscheider gegeben, was eine einwandfreie Funktion des Ölabscheiders gewährleistet .It is also advantageous that the connection of the separator to the suction side of the oil pump has a closable opening for refilling the oil during operation. This can be advantageous, for example, for refilling oil during the operation of a ship's diesel engine, since it is not necessary to switch off the engine on long journeys. Furthermore, an advantageous embodiment of the present invention provides that the oil separator is formed by a vertical tube with an oblique opening. This provides a large cross-section for the gas mixture in the oil separator, which ensures that the oil separator functions properly.
Weiterhin ist es vorteilhaft, daß das vertikale Rohr von einem konzentrischen Mantel umgeben ist, der an seinem oberen Ende mit einer Öffnung zur Umgebung versehen ist. Diese Konstruktion läßt eine einfache und kostengünstige Herstellung zu.It is also advantageous that the vertical tube is surrounded by a concentric jacket, which is provided at its upper end with an opening to the environment. This construction allows simple and inexpensive manufacture.
Eine besonders vorteilhafte Ausführungsform sieht vor, daß das vertikale Rohr am Ende der schrägen Öffnung eine Spitze bildet, die in das aus Filz gebildete Saugpolster einstechbar ist. Zum einen wird hierdurch ein sicheres Aufsaugen des an der Rohrinnenwand entlanglaufenden Öls zusätzlich durch Ausnutzung der Kapillarkräfte sichergestellt und zum anderen gewährleistet die Verwendung von Filz, daß das vertikale Rohr leicht in das Saugpolster einstechbar ist. Außerdem stellt die Verwendung von Filz als Saugpolster eine einfache und kostengünstige Lösung dar.A particularly advantageous embodiment provides that the vertical tube forms a tip at the end of the oblique opening, which can be inserted into the suction pad made of felt. On the one hand, this ensures that the oil running along the inside of the pipe is safely sucked up by utilizing the capillary forces, and on the other hand the use of felt ensures that the vertical pipe can be easily inserted into the suction pad. In addition, the use of felt as a suction pad is a simple and inexpensive solution.
Schließlich sieht eine noch vorteilhafte Ausführungs- form vor, daß die Verbindungsieitungen außerhalb des Motorgehäuses angeordnet sind. Dadurch wird eine kühle Leitungsführung gewährleistet, wodurch ein Verkoken der Leitungsquerschnitte verhindert wird, d.h. die Leitung bleibt frei.Finally, an even more advantageous embodiment provides that the connecting lines are arranged outside the motor housing. This ensures a cool cable routing, which means a Coking of the line cross-sections is prevented, ie the line remains free.
Die vorliegende Erfindung wird nun anhand eines Ausführungsbeispieles im Zusammenhang mit den beigefügten Zeichnungen beschrieben. Dabei zeigenThe present invention will now be described using an exemplary embodiment in conjunction with the accompanying drawings. Show
Fig. 1 eine schematische Darstellung einer Entlüftungsvorrichtung der erfindungsgemäßen Art,1 is a schematic representation of a ventilation device of the type according to the invention,
Fig. 2 ein Schnittbild eines Ölabscheiders der erfindungsgemäßen Art .Fig. 2 is a sectional view of an oil separator of the type according to the invention.
In Fig. 1 ist das Kurbelgehäuse 1 mit einem Entlüftungsventil 2, das beispielsweise ein Membranventil sein kann, verbunden, wobei das Entlüftungsventil 2 mit einem Ölabscheider 3 verbunden ist, der an seinem einen Ende eine Öffnung 4 zur Atmosphäre hin aufweist und an seinem anderen Ausgang mit einem Filter 5 verbunden ist. Das Filter 5 wiederum ist mit der Saugseite der Ölpumpe 6 verbunden, die wiederum das Öl aus einem Ölsumpf 7 ansaugt und auf ihrer Förderseite in das Kurbelgehäuse 1 zurückfördert. Zwischen dem Filter 5 und der Pumpe 6 ist zusätzlich ein Füllstutzen 8 dargestellt, bei welchem dem System zusätzlich Öl zugeführt werden kann.In Fig. 1, the crankcase 1 is connected to a vent valve 2, which may be a diaphragm valve, for example, wherein the vent valve 2 is connected to an oil separator 3, which has an opening 4 to the atmosphere at one end and at its other outlet is connected to a filter 5. The filter 5 is in turn connected to the suction side of the oil pump 6, which in turn sucks the oil from an oil sump 7 and delivers it back into the crankcase 1 on its delivery side. Between the filter 5 and the pump 6, a filler neck 8 is additionally shown, in which oil can also be supplied to the system.
Bei Überdruck im Kurbelgehäuse kann das Gas-Ölgemisch über das Entlüftungsventil 2 in den dafür vorgesehenen Leitungskanal 9 entweichen. Im Ölabscheider 3 wird das Gas dann vom Öl getrennt und über die Öffnung 4 an die Atmosphäre abgeleitet, wogegen das Öl von dem als Saugpolster ausgebildeten Filter 5 aufgesaugt wird. Das so gefilterte Öl gelangt von dort in eine kleine Kammer, den sog. Separator 11. Das hier gesammelte Öl wird über die Ölleitung 10 von der Saugseite der Ölpumpe 6 angesaugt. Dabei weist die Ölleitung 10 einen Querschnitt von etwa 0,5 mm auf, der wesentlich kleiner ist als der Querschnitt der Leitung 9. Wenn nämlich kein Öl an den Separator anfällt, die Leitung 10 also Luft zieht, muß die angesaugte Luftmenge so gering gehalten sein, daß das Schmierölsystem nicht beeinträchtigt wird (z.B. abreißender Schmierung). Von der Saugseite der Ölpumpe, die im Normalfall Öl aus dem Ölsumpf 7 ansaugt, gelangt das Öl in das Kurbelgehäuse 1. Über den Einfüllstutzen 8 besteht die Möglichkeit, während des Betriebs Öl nachzufüllen.If there is excess pressure in the crankcase, the gas-oil mixture can escape via the vent valve 2 into the line duct 9 provided for this purpose. In the oil separator 3, the gas is then separated from the oil and discharged to the atmosphere through the opening 4, whereas the oil from the one designed as a suction pad Filter 5 is sucked up. The oil filtered in this way flows from there into a small chamber, the so-called separator 11. The oil collected here is sucked in via the oil line 10 from the suction side of the oil pump 6. The oil line 10 has a cross section of approximately 0.5 mm, which is considerably smaller than the cross section of the line 9. This is because if there is no oil at the separator, ie the line 10 draws air, the amount of air sucked in must be kept so low that the lubricating oil system is not adversely affected (e.g. tearing lubrication). From the suction side of the oil pump, which normally draws oil from the oil sump 7, the oil gets into the crankcase 1. Via the filler neck 8, there is the possibility of refilling oil during operation.
Fig. 2 zeigt einen Schnitt durch den erfindungsgemäßen Ölabscheider. Dieser ist außerhalb des Motorgehäuses 12 angeordnet. Es sind der Leitungskanal für das Gas-Ölgemisch 9, die schräge Öffnung 13, die durch Pfeil A angedeutete Strömungsrichtung des Gas sowie das Saugpolster 5, der Separator 11 und die Ölleitung 10 erkennbar. Des weiteren sind die Umman- telung 14, der dichtende Verschluß 15 sowie die Atmosphärenöffnung 4 dargestellt.Fig. 2 shows a section through the oil separator according to the invention. This is arranged outside of the motor housing 12. The line channel for the gas-oil mixture 9, the oblique opening 13, the direction of flow of the gas indicated by arrow A and the suction pad 5, the separator 11 and the oil line 10 can be seen. The sheath 14, the sealing closure 15 and the atmosphere opening 4 are also shown.
Der Ölabscheider ist über Haltevorrichtung an dem Luftfiltergehäuse 16 befestigt . Durch die Leitung 9 gelangt ein Gas-Ölgemisch aus dem Kurbelgehäuse in die Vorrichtung. Durch die scharfe Umlenkung der Luft in Pfeilrichtung A gleiten die schwereren Ölteilchen an der hohen Wand 17 nach unten und werden von dem Saugpolster 5, das durch die Spitze 18 mit der Leitung 9 verbunden ist, aufgesaugt. Die Luft steigt in dem Mantel 14 nach oben und kann lediglich durch die Öffnung 4 in die Umgebung entweichen. Das in dem aus Filz bestehenden Saugpolster 5 gesammelte und gefilterte Öl tropft in eine Kammer 11, den sog. Separator ab und wird durch die in ihrem Durchmesser deutlich schmaler ausgeführte Ölleitung 10 von der Ölpumpe angesaugt . Durch Demontage des Dichtverschlusses 15 und Herausziehen der Leitung 9 wird das Austauschen des Saugpolsters zu Wartungszwecken ermöglicht . The oil separator is fastened to the air filter housing 16 by means of a holding device. A gas-oil mixture passes through the line 9 from the crankcase into the device. The heavier oil particles slide due to the sharp deflection of the air in the direction of arrow A. down on the high wall 17 and are sucked up by the suction pad 5, which is connected to the line 9 by the tip 18. The air rises in the jacket 14 and can only escape into the environment through the opening 4. The oil collected and filtered in the suction pad 5 made of felt drips off into a chamber 11, the so-called separator, and is sucked in by the oil pump through the oil pipe 10, which has a significantly narrower diameter. By removing the sealing closure 15 and pulling out the line 9, the replacement of the suction pad for maintenance purposes is made possible.

Claims

Patentansprüche claims
1. Entlüftungsvorrichtung für das Kurbelgehäuse einer Brennkraftmaschine, insbesondere für einen Einzylinder-Dieselmotor, mit einem Entlüftungsventil, dadurch gekennzeichnet, daß in Strömungsrichtung hinter dem Entlüftungsventil (2) ein Kanal (9) für das Gas-Öl- Gemisch vorgesehen ist, der in einem Ölabscheider (3) endet, wobei hinter dem Ölabscheider (3) für das Gas eine Verbindung (4) zur Umgebung vorgesehen ist.1. ventilation device for the crankcase of an internal combustion engine, in particular for a single-cylinder diesel engine, with a ventilation valve, characterized in that a channel (9) is provided for the gas-oil mixture in the flow direction behind the ventilation valve (2) Oil separator (3) ends, a connection (4) to the environment being provided behind the oil separator (3) for the gas.
2. Entlüftungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Flüssigkeitsbereich des Olabscheiders (3) zum Abführen des Öls mit einem Separator (11) verbunden ist.2. Venting device according to claim 1, characterized in that the liquid region of the oil separator (3) for discharging the oil is connected to a separator (11).
3. Entlüftungsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß eine Verbindung des Separators (11) mit der Saugseite der Ölpumpe (6) zum Rückführen des Öls in das Kurbelgehäuse (1) vorgesehen ist.3. Venting device according to claim 2, characterized in that a connection of the separator (11) with the suction side of the oil pump (6) for returning the oil into the crankcase (1) is provided.
4. Entlüftungsvorrichtung nach Anspruch 3 , dadurch gekennzeichnet, daß zur Verbindung des Separators (11) mit der Saugseite der Ölpumpe (6) ein Kanal (10) vorgesehen ist, dessen Querschnitt kleiner ist als derjenige des Kanals (9) für das Gas- Öl-Gemisch.4. Ventilation device according to claim 3, characterized in that for connecting the separator (11) with a channel (10) is provided on the suction side of the oil pump (6), the cross section of which is smaller than that of the channel (9) for the gas / oil mixture.
Entlüftungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Ölabscheider (3) ein gasdurchlässiges Saugpolster (5) zum Aufnehmen des Öls aufweist .Venting device according to claim 1, characterized in that the oil separator (3) has a gas-permeable suction pad (5) for receiving the oil.
Entlüftungsvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Verbindung (10) des Separators (11) mit der Saugseite der Ölpumpe (6) eine verschließbare Öffnung (8) um Nachfüllen von Öl während des Betriebs aufweist .Venting device according to claim 3, characterized in that the connection (10) of the separator (11) to the suction side of the oil pump (6) has a closable opening (8) for refilling oil during operation.
Entlüftungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Ölabscheider (3) durch ein vertikales Rohr mit einer schrägen Öffnung (13) gebildet ist .Venting device according to claim 1, characterized in that the oil separator (3) is formed by a vertical tube with an oblique opening (13).
Entlüftungsvorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das vertikale Rohr von einem konzentrischen Mantel (14) umgeben ist, der an seinem oberen Ende mit einer Öffnung (4) zur Umgebung versehen ist . Venting device according to claim 7, characterized in that the vertical tube is surrounded by a concentric jacket (14) which is provided at its upper end with an opening (4) to the surroundings.
9. Entlüftungsvorrichtung nach den Ansprüchen 5 und 7, dadurch gekennzeichnet, daß das vertikale Rohr am Ende der schrägen Öffnung (13) eine Spitze (18) bildet, die in das aus Filz gebildete Saugpolster (5) einstechbar ist .9. Ventilation device according to claims 5 and 7, characterized in that the vertical tube at the end of the oblique opening (13) forms a tip (18) which can be pierced into the suction pad (5) formed from felt.
10. Entlüftungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Verbindungsleitungen (9, 10) außerhalb des Motorgehäuses angeordnet sind. 10. Venting device according to claim 1, characterized in that the connecting lines (9, 10) are arranged outside the motor housing.
PCT/EP1997/004210 1996-08-05 1997-08-01 Venting device for an internal combustion engine crankcase WO1998005854A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59706981T DE59706981D1 (en) 1996-08-05 1997-08-01 BLEEDING DEVICE FOR THE CRANKCASE OF AN INTERNAL COMBUSTION ENGINE
JP10507605A JP2000515603A (en) 1996-08-05 1997-08-01 Degassing device for crankcase of internal combustion engine
EP97940057A EP0916018B1 (en) 1996-08-05 1997-08-01 Venting device for an internal combustion engine crankcase
US09/241,752 US6092492A (en) 1996-08-05 1999-02-01 Venting device for the crankcase of an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19631654.5 1996-08-05
DE19631654A DE19631654A1 (en) 1996-08-05 1996-08-05 Ventilation device for the crankcase of an internal combustion engine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/241,752 Continuation US6092492A (en) 1996-08-05 1999-02-01 Venting device for the crankcase of an internal combustion engine

Publications (1)

Publication Number Publication Date
WO1998005854A1 true WO1998005854A1 (en) 1998-02-12

Family

ID=7801882

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/004210 WO1998005854A1 (en) 1996-08-05 1997-08-01 Venting device for an internal combustion engine crankcase

Country Status (4)

Country Link
EP (1) EP0916018B1 (en)
JP (1) JP2000515603A (en)
DE (2) DE19631654A1 (en)
WO (1) WO1998005854A1 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
DE19916172A1 (en) * 1999-04-10 2000-10-19 Druckluft Dannoehl Gmbh Piston booster
US7541343B2 (en) 2001-05-22 2009-06-02 Newsouth Innovations Pty Limited Inhibiting cellular proliferation by expressing yin yang-1
US7763850B2 (en) * 2004-03-11 2010-07-27 Total Raffinage Marketing Method and device for the real-time measurement of the consumption of oil from an engine oil separation system, using radioactive tracers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005018132U1 (en) * 2005-11-17 2007-03-29 Hengst Gmbh & Co.Kg Internal combustion engine with a device for separating oil from the crankcase ventilation gas

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US3134658A (en) * 1960-10-21 1964-05-26 Ingersoll Rand Co Breather trap
US3326198A (en) * 1965-03-19 1967-06-20 Connie L Jackson Smog reduction filter for internal combustion engines
GB1531080A (en) * 1977-08-26 1978-11-01 Gec Diesels Ltd Crankcase ventilation of internal combustion piston engines
US5497755A (en) * 1995-05-26 1996-03-12 Caterpillar Inc. Engine crankcase ventilation

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DE2535950C2 (en) * 1975-08-12 1983-01-05 Motorenfabrik Hatz Gmbh & Co Kg, 8399 Ruhstorf Automatic control valve for the crankcase ventilation of an internal combustion engine

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Publication number Priority date Publication date Assignee Title
US3134658A (en) * 1960-10-21 1964-05-26 Ingersoll Rand Co Breather trap
US3326198A (en) * 1965-03-19 1967-06-20 Connie L Jackson Smog reduction filter for internal combustion engines
GB1531080A (en) * 1977-08-26 1978-11-01 Gec Diesels Ltd Crankcase ventilation of internal combustion piston engines
US5497755A (en) * 1995-05-26 1996-03-12 Caterpillar Inc. Engine crankcase ventilation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916172A1 (en) * 1999-04-10 2000-10-19 Druckluft Dannoehl Gmbh Piston booster
DE19916172C2 (en) * 1999-04-10 2001-05-31 Druckluft Dannoehl Gmbh Piston booster
US7541343B2 (en) 2001-05-22 2009-06-02 Newsouth Innovations Pty Limited Inhibiting cellular proliferation by expressing yin yang-1
US7763850B2 (en) * 2004-03-11 2010-07-27 Total Raffinage Marketing Method and device for the real-time measurement of the consumption of oil from an engine oil separation system, using radioactive tracers

Also Published As

Publication number Publication date
EP0916018B1 (en) 2002-04-10
JP2000515603A (en) 2000-11-21
DE19631654A1 (en) 1998-02-19
DE59706981D1 (en) 2002-05-16
EP0916018A1 (en) 1999-05-19

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