EP1080298B2 - Oil separator for removing oil from the crankcase ventilation gases of an internal combustion engine - Google Patents

Oil separator for removing oil from the crankcase ventilation gases of an internal combustion engine Download PDF

Info

Publication number
EP1080298B2
EP1080298B2 EP00916937.6A EP00916937A EP1080298B2 EP 1080298 B2 EP1080298 B2 EP 1080298B2 EP 00916937 A EP00916937 A EP 00916937A EP 1080298 B2 EP1080298 B2 EP 1080298B2
Authority
EP
European Patent Office
Prior art keywords
oil
oil separator
internal combustion
combustion engine
cyclones
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.)
Expired - Lifetime
Application number
EP00916937.6A
Other languages
German (de)
French (fr)
Other versions
EP1080298A1 (en
EP1080298B1 (en
Inventor
Jürgen BUSEN
Sieghard Pietschner
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.)
Hengst SE and Co KG
Original Assignee
Hengst SE and 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7901552&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1080298(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hengst SE and Co KG filed Critical Hengst SE and Co KG
Publication of EP1080298A1 publication Critical patent/EP1080298A1/en
Application granted granted Critical
Publication of EP1080298B1 publication Critical patent/EP1080298B1/en
Publication of EP1080298B2 publication Critical patent/EP1080298B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F01M2013/0038—Layout of crankcase breathing systems
    • F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
    • F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
    • F01M2013/0066—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers in parallel
    • 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
    • F01M2013/0422—Separating oil and gas with a centrifuge device
    • F01M2013/0427—Separating oil and gas with a centrifuge device the centrifuge device having no rotating part, e.g. cyclone

Definitions

  • the present invention relates to an oil separator for de-oiling crankcase ventilation gases of an internal combustion engine, the oil separator comprising a cyclone having a gas inlet connected to the crankcase of the internal combustion engine, a gas outlet connected to the intake manifold of the internal combustion engine and an oil outlet connected to an oil sump of the internal combustion engine ,
  • An oil separator of the above type is from the DE 42 14 324 C2 known.
  • this oil separator a single cyclone is used, which is sized in size so that it can process the maximum accumulating amount of vent gases.
  • As an essential feature is provided in this known oil separator that connects to the oil outlet of the cyclone a downpipe whose mouth is located below the oil level of the oil sump of the associated internal combustion engine, that housed in a lower cyclone-side housing part, normally open float valve kickback from the oil sump prevents the internal combustion engine, and that the entire oil separator is connected as an assembly with the downpipe separable.
  • this oil separator with the single cyclone has the disadvantage that it does not over the entire range of operating conditions of the internal combustion engine occurring in practice optimum oil separation result achieved.
  • the occurring different operating conditions of the internal combustion engine lead on the one hand to different sized volume flows of vent gases from the crankcase and on the other hand, a different degree of oil loading of these venting gases. Since a cyclone works optimally only for a certain, relatively narrow range of operating conditions of the internal combustion engine, undesired oil quantities still occur in operating conditions outside this optimum operating range in the gases discharged from the cyclone and fed to the intake air of the internal combustion engine.
  • the object is to provide an oil separator of the type mentioned, which avoids the disadvantages listed and in particular over a very large, all occurring in practice operating conditions of the internal combustion engine workspace optimal, i. ensures complete or almost complete separation of oil from the crankcase ventilation gases.
  • the oil separator according to the invention With the oil separator according to the invention, a substantial increase in the optimum working range of the oil separator is achieved compared to an oil separator with a single cyclone.
  • the oil separator shows a significantly improved separation efficiency at low flow rates of the crankcase ventilation gases and greater insensitivity to fluctuations in this volume flow.
  • a significantly reduced dependence of the separation efficiency and thus the efficiency of each currently existing operating conditions of the associated internal combustion engine is achieved, which substantially reduces the oil load of the intake air of the internal combustion engine and reduces the oil loss of the internal combustion engine via the crankcase ventilation.
  • each cyclone has to process a fraction of the crankcase ventilation gases corresponding to the number of cyclones, each cyclone can be made correspondingly smaller, in particular with a smaller diameter and, more importantly, with a correspondingly reduced height.
  • the overall size of the oil separator is advantageously compact, although in comparison to a conventional oil separator, the diameter can be slightly larger, but the overall height is considerably smaller. This provides a substantial facilitation in housing the oil separator in an engine compartment, such as a motor vehicle, where cramped conditions are often encountered.
  • the cyclones are designed with a tangential flow.
  • This tangential flow allows in particular a particularly compact design, which keeps the height of the cyclones low in comparison to an axial flow.
  • the main inflow channel and the individual inflow channels are expediently combined to form an inflow channel component.
  • Another step to reduce the parts of the oil separator is that the cyclone body component and the inflow channel component are combined to form a main component.
  • the individual cyclones and / or the associated supply and discharge lines can be integrated at least partially into one or more other components of the internal combustion engine.
  • the effort for the production and installation of the individual parts of the oil separator and / or its inlet and outlet lines can be reduced.
  • the installation space requirement for the individual parts of the oil separator and its supply and discharge lines can be further reduced.
  • the cylinder head cover or its air filter housing are particularly suitable as components of the internal combustion engine.
  • the components mentioned on the one hand offer free spaces or previous dead spaces in which the cyclones and other parts of the oil separator can be accommodated without additional space.
  • these components are in any case in the vicinity or in the course of the flow paths, which must cover the crankcase ventilation gas and the separated oil and the purified gas.
  • the two figures of the drawing show an embodiment of an oil separator 1, which comprises four cyclones 11, 12, 13, 14.
  • the cyclones 11-14 are combined to form a one-piece compact main component 10.
  • FIG. 1 Top right in FIG. 1 is a main inflow passage 20 can be seen, the outer, ie right end is formed as a transition piece 28 with a line connection piece 29 which is circular in cross-section.
  • the inflow channel 20 becomes flatter and, as shown in FIG. 1 is not visible, at the same time wider, its cross-sectional area remains substantially constant.
  • the inflow channel 20 is divided into four individual inflow channels or gas inlets 21 - 24, of which in FIG. 1 only the channel or inlet 22 to the second cyclone 12 is visible.
  • the incoming gas stream is distributed to the four cyclones 11-14, wherein in each case a tangential flow takes place. Due to this tangential flow, the gas flow is put into a turbulent flow, which ensures that entrained oil droplets precipitate on the inner surface of the cyclones 11-14 and flow down from there.
  • the freed of the oil droplets gas flow exits from each cyclone 11 - 14 through each associated gas outlet 31 - 34 upwards and passes through a collecting cap 38 in a line connection piece 39.
  • a gas line can be connected to an air intake tract of an associated Internal combustion engine leads.
  • the oil separated in the cyclones 11-14 flows downwards within the cyclones 11-14 and exits through an outlet 41-44 into a collection funnel 48 at the lower end thereof.
  • a line connection pipe 49 is provided at its lowest point, to which an oil return line to an oil sump of the associated internal combustion engine can be connected.
  • FIG. 2 shown cross section through the oil separator 1 is particularly the space-saving and compact arrangement of the four cyclones 11 - 14 can be seen.
  • the line connection piece 29 is visible, to which a line coming from the crankcase of the associated internal combustion engine can be connected, through which crankcase ventilation gas coming from the crankcase, charged with oil droplets, can be guided to the oil separator 1.
  • the main inflow channel 20 widened in the region of the transition piece 28 and, as with reference to FIG. 1 explained, flattening at the same time.
  • the main inflow channel 20 divides into four inflow channels or gas inlets 21-24, which are each assigned to one of the cyclones 11-14.
  • each inflow channel or gas inlet 21-24 leads tangentially into its associated cyclone 11-14.
  • the course is such that a clockwise gas flow results, while in the case of the cyclones 13 and 14 the gas flow takes place under left-hand rotation.
  • the view falls in each case through the associated gas outlet 31-34 onto the outlet 41-44 respectively arranged at the very bottom of the cyclone 11-14. At the very bottom is in the background in FIG. 2 still a small part of the collecting funnel 48 for the separated oil recognizable.
  • FIG. 2 illustrates that the incoming gas stream without deflection and thus virtually without increasing the flow resistance to the four individual cyclones 11 - 14 is distributed.
  • this can be made of a few individual parts, in the present example from the main component 10, the transition piece 28, the combined gas outlets 31-34, the collecting hood 38 and the collecting funnel 48.
  • connecting lines which are advantageously designed as hoses, as is known per se.
  • individual or all connecting lines, at least over sections, in other components of the internal combustion engine be integrated, which reduces the production and installation of separate lines or even makes completely unnecessary.
  • the said parts of the oil separator 1 are suitable die castings made of light metal or injection-molded parts made of plastic, wherein a plastic is to be selected, which is able to cope with the occurring thermal and chemical stresses.

Landscapes

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

Description

Die vorliegende Erfindung betrifft einen Ölabscheider zur Entölung von Kurbelgehäuse-Entlüftungsgasen einer Brennkraftmaschine, wobei der Ölabscheider einen Zyklon umfasst, der einen mit dem Kurbelgehäuse der Brennkraftmaschine verbundenen Gaseinlass, einen mit dem Ansaugtrakt der Brennkraftmaschine verbundenen Gasauslass und einen mit einem Ölsumpf der Brennkraftmaschine verbundenen Ölauslass aufweist.The present invention relates to an oil separator for de-oiling crankcase ventilation gases of an internal combustion engine, the oil separator comprising a cyclone having a gas inlet connected to the crankcase of the internal combustion engine, a gas outlet connected to the intake manifold of the internal combustion engine and an oil outlet connected to an oil sump of the internal combustion engine ,

Ein Ölabscheider der oben genannten Art ist aus der DE 42 14 324 C2 bekannt. Bei diesem Ölabscheider wird ein einzelner Zyklon eingesetzt, der hinsichtlich seiner Größe so bemessen ist, dass er die maximal anfallende Menge von Entlüftungsgasen verarbeiten kann. Als wesentliches Merkmal ist bei diesem bekannten Ölabscheider vorgesehen, dass an dem Ölauslass des Zyklons eine Fallleitung anschließt, deren Mündung unterhalb des Ölspiegels des Ölsumpfes der zugehörigen Brennkraftmaschine angeordnet ist, dass ein in einem unteren zyklonseitigen Gehäuseteil untergebrachtes, normal offenes Schwimmerventil einen Rückschlag aus dem Ölsumpf des Verbrennungsmotors verhindert, und dass der gesamte Ölabscheider als Baugruppe mit der Fallleitung trennbar verbunden ist. Diese speziellen Merkmale des Ölabscheiders sollen dafür sorgen, dass bei plötzlichen und starken Änderungen der Betriebsbedinqungen der zugehörigen Brennkraftmaschine, beispielsweise wenn aus dem Leerlauf heraus Vollgas gegeben wird, kein Öl aus dem Ölsumpf der Brennkraftmaschine in das Innere des Zyklons gerissen wird, weil durch die Änderung der Betriebsbedingungen extrem große Druckdifferenzen auftreten.An oil separator of the above type is from the DE 42 14 324 C2 known. In this oil separator, a single cyclone is used, which is sized in size so that it can process the maximum accumulating amount of vent gases. As an essential feature is provided in this known oil separator that connects to the oil outlet of the cyclone a downpipe whose mouth is located below the oil level of the oil sump of the associated internal combustion engine, that housed in a lower cyclone-side housing part, normally open float valve kickback from the oil sump prevents the internal combustion engine, and that the entire oil separator is connected as an assembly with the downpipe separable. These special features of the oil separator should ensure that in sudden and strong changes in Betriebsbedinqungen the associated internal combustion engine, for example, when full throttle is given from idling, no oil from the oil sump of the engine is torn into the interior of the cyclone, because by the change the operating conditions extremely large pressure differences occur.

Das dargelegte Problem, mit dem sich die oben genannte Schrift beschäftigt, wird zwar durch den darin beschriebenen Ölabscheider gelöst, jedoch weist dieser Ölabscheider mit dem einzelnen Zyklon den Nachteil auf, dass er nicht über den gesamten in der Praxis auftretenden Bereich von Betriebsbedingungen der Brennkraftmaschine ein optimales Ölabscheideergebnis erreicht. Die auftretenden unterschiedlichen Betriebsbedingungen der Brennkraftmaschine führen einerseits zu unterschiedlich großen Volumenströmen von Entlüftungsgasen aus dem Kurbelgehäuse und zum anderen zu einer unterschiedlich starken Ölbefrachtung dieser Entlüftungsgase. Da ein Zyklon nur für einen bestimmten, relativ engen Bereich von Betriebsbedingungen der Brennkraftmaschine optimal arbeitet, treten bei Betriebsbedingungen außerhalb dieses optimalen Arbeitsbereiches doch noch nicht erwünschte Ölmengen in den aus dem Zyklon abgeführten, der Ansaugluft der Brennkraftmaschine zugeleiteten Gasen auf.Although the above problem addressed by the above-mentioned document is solved by the oil separator described therein, however, this oil separator with the single cyclone has the disadvantage that it does not over the entire range of operating conditions of the internal combustion engine occurring in practice optimum oil separation result achieved. The occurring different operating conditions of the internal combustion engine lead on the one hand to different sized volume flows of vent gases from the crankcase and on the other hand, a different degree of oil loading of these venting gases. Since a cyclone works optimally only for a certain, relatively narrow range of operating conditions of the internal combustion engine, undesired oil quantities still occur in operating conditions outside this optimum operating range in the gases discharged from the cyclone and fed to the intake air of the internal combustion engine.

Für die vorliegende Erfindung stellt sich deshalb die Aufgabe, einen Ölabscheider der eingangs genannten Art zu schaffen, der die aufgeführten Nachteile vermeidet und der insbesondere über einen sehr großen, alle in der Praxis auftretenden Betriebsbedingungen der Brennkraftmaschine umfassenden Arbeitsbereich eine optimale, d.h. vollständige oder nahezu vollständige Abscheidung von Öl aus den Kurbelgehäuse-Entlüftungsgasen gewährleistet.For the present invention, therefore, the object is to provide an oil separator of the type mentioned, which avoids the disadvantages listed and in particular over a very large, all occurring in practice operating conditions of the internal combustion engine workspace optimal, i. ensures complete or almost complete separation of oil from the crankcase ventilation gases.

Die Lösung dieser Aufgabe gelingt durch einen Ölabscheider gemäß Anspruch 1. Vorteilhafte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen 2 bis 4 angeführt.The solution of this object is achieved by an oil separator according to claim 1. Advantageous embodiments of the invention are set forth in the dependent claims 2 to 4.

Mit dem erfindungsgemäßen Ölabscheider wird im Vergleich zu einem Ölabscheider mit einem einzelnen Zyklon eine wesentliche Vergrößerung des optimalen Arbeitsbereichs des Ölabscheiders erreicht. Insbesondere zeigt der Ölabscheider eine deutlich verbesserte Abscheideleistung bei geringen Volumenströmen der Kurbelgehäuse-Entlüftungsgase sowie eine größere Unempfindlichkeit gegen Schwankungen dieses Volumenstroms. Auf diese Weise wird mit dem erfindungsgemäßen Ölabscheider eine deutlich verminderte Abhängigkeit der Abscheideleistung und damit des Wirkungsgrades von den jeweils gerade vorliegenden Betriebsbedingungen der zugehörigen Brennkraftmaschine erreicht, was die Ölbelastung der Ansaugluft der Brennkraftmaschine wesentlich verringert und was den Ölverlust der Brennkraftmaschine über die Kurbelgehäuseentlüftung reduziert.With the oil separator according to the invention, a substantial increase in the optimum working range of the oil separator is achieved compared to an oil separator with a single cyclone. In particular, the oil separator shows a significantly improved separation efficiency at low flow rates of the crankcase ventilation gases and greater insensitivity to fluctuations in this volume flow. In this way, with the oil separator according to the invention a significantly reduced dependence of the separation efficiency and thus the efficiency of each currently existing operating conditions of the associated internal combustion engine is achieved, which substantially reduces the oil load of the intake air of the internal combustion engine and reduces the oil loss of the internal combustion engine via the crankcase ventilation.

Die Körper der einzelnen Zyklone weisen parallel zueinander verlaufende Mittelachsen auf und sind zu einem Zyklonkörper-Bauteil vereinigt. Da jeder einzelne Zyklon nur noch einen der Zahl der Zyklone entsprechenden Bruchteil der Kurbelgehäuse-Entlüftungsgase verarbeiten muss, kann jeder Zyklon entsprechend kleiner, insbesondere mit kleinerem Durchmesser und, was noch wichtiger ist, mit entsprechend verkleinerter Höhe ausgeführt werden. Dadurch wird die Baugröße des Ölabscheiders insgesamt vorteilhaft kompakt, wobei zwar im Vergleich zu einem herkömmlichen Ölabscheider der Durchmesser geringfügig größer werden kann, die Bauhöhe aber erheblich kleiner wird. Dies bietet eine wesentliche Erleichterung bei der Unterbringung des Ölabscheiders in einem Motorraum, z.B. eines Kraftfahrzeuges, wo häufig beengte Verhältnisse vorgefunden werden.The bodies of the individual cyclones have mutually parallel central axes and are combined to form a cyclone body component. There each cyclone only has to process a fraction of the crankcase ventilation gases corresponding to the number of cyclones, each cyclone can be made correspondingly smaller, in particular with a smaller diameter and, more importantly, with a correspondingly reduced height. As a result, the overall size of the oil separator is advantageously compact, although in comparison to a conventional oil separator, the diameter can be slightly larger, but the overall height is considerably smaller. This provides a substantial facilitation in housing the oil separator in an engine compartment, such as a motor vehicle, where cramped conditions are often encountered.

Durch die Ausbildung der zum jeweiligen Gaseinlass der einzelnen Zyklone führenden Zuströmkanäle aus einem einzelnen, sich aufspaltenden oder aufteilenden Haupt-Zuströmkanal wird mit Vorteil erreicht, dass nur eine einzelne Verbindungsleitung vom Kurbelgehäuse zum Ölabscheider geführt werden muss, um die Kurbelgehäuse-Entlüftungsgase zum Ölabscheider zu leiten. Erst im Ölabscheider folgt dann die Aufteilung des Gasstroms der Entlüftungsgase in die Teilströme für die einzelnen Zyklone. Dies vereinfacht den Einbau des Ölabscheiders und hält die Zahl der Verbindungsleitungen niedrig, obwohl mehrere Zyklone eingesetzt werden.Due to the design of the respective gas inlet of the individual cyclones leading inflow channels from a single, splitting or dividing main inflow channel is achieved with advantage that only a single connecting line from the crankcase to the oil separator must be performed to direct the crankcase ventilation gases to the oil separator , Only in the oil separator then follows the division of the gas flow of the vent gases into the partial flows for the individual cyclones. This simplifies the installation of the oil separator and keeps the number of connecting lines low, although several cyclones are used.

Um den Ölabscheider kostengünstig und arbeitssparend produzieren zu können, sind dessen Einzelteile Druckgussteile aus Leichtmetall und/oder Spritzgussteile aus Kunststoff.In order to produce the oil separator cost-effective and labor-saving, its individual parts are die-cast parts made of light metal and / or injection-molded parts made of plastic.

Bevorzugt ist weiter vorgesehen, dass die Zyklone mit einer tangentialen Anströmung ausgeführt sind. Diese tangentiale Anströmung ermöglicht insbesondere eine besonders kompakte Bauweise, die im Vergleich zu einer axialen Anströmung die Bauhöhe der Zyklone niedrig hält.Preferably, it is further provided that the cyclones are designed with a tangential flow. This tangential flow allows in particular a particularly compact design, which keeps the height of the cyclones low in comparison to an axial flow.

Um eine kostengünstige Fertigung des Ölabscheiders zu gewährleisten, sind zweckmäßig der Haupt-Zuströmkanal und die einzelnen Zuströmkanäle zu einem Zuströmkanal-Bauteil vereinigt.In order to ensure cost-effective production of the oil separator, the main inflow channel and the individual inflow channels are expediently combined to form an inflow channel component.

Ein weiterer Schritt zur Reduzierung der Einzelteile des Ölabscheiders besteht darin, dass das Zyklonkörper-Bauteil und das Zuströmkanal-Bauteil zu einem Haupt-Bauteil vereinigt sind.Another step to reduce the parts of the oil separator is that the cyclone body component and the inflow channel component are combined to form a main component.

Ergänzend können die einzelnen Zyklone und/oder die zugehörigen Zu- und Ableitungen zumindest zum Teil in eine oder mehrere andere Komponenten der Brennkraftmaschine integriert sein. Hierdurch kann der Aufwand für die Herstellung und den Einbau der einzelnen Teile des Ölabscheiders und/oder seiner Zu- und Ableitungen vermindert werden. Auch der Einbauraumbedarf für die einzelnen Teile des Ölabscheiders und für dessen Zu- und Ableitungen kann so weiter reduziert werden.In addition, the individual cyclones and / or the associated supply and discharge lines can be integrated at least partially into one or more other components of the internal combustion engine. As a result, the effort for the production and installation of the individual parts of the oil separator and / or its inlet and outlet lines can be reduced. The installation space requirement for the individual parts of the oil separator and its supply and discharge lines can be further reduced.

Für die Integration der einzelnen Zyklone und/oder der zugehörigen Zu- und Ableitungen oder von Teilen davon sind besonders geeignet als Komponenten der Brennkraftmaschine deren Zylinderkopfhaube oder deren Luftfiltergehäuse. Die genannten Komponenten bieten einerseits Freiräume oder bisherige Toträume, in denen die Zyklone sowie weitere Teile des Ölabscheiders ohne Raum-Mehrbedarf untergebracht werden können. Außerdem liegen diese Komponenten ohnehin in der Nähe oder im Verlauf der Strömungswege, die das Kurbelgehäuse-Entlüftungsgas sowie das daraus abgeschiedene Öl und das gereinigte Gas zurücklegen müssen.For the integration of the individual cyclones and / or the associated supply and discharge lines or parts thereof, the cylinder head cover or its air filter housing are particularly suitable as components of the internal combustion engine. The components mentioned on the one hand offer free spaces or previous dead spaces in which the cyclones and other parts of the oil separator can be accommodated without additional space. In addition, these components are in any case in the vicinity or in the course of the flow paths, which must cover the crankcase ventilation gas and the separated oil and the purified gas.

Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand einer Zeichnung erläutert. Die Figuren der Zeichnung zeigen:

Figur 1
einen Ölabscheider im Vertikalschnitt und
Figur 2
den Ölabscheider aus Figur 1 im Horizontalschnitt gemäß der Linie II - II in Figur 1.
An embodiment of the invention will be explained below with reference to a drawing. The figures of the drawing show:
FIG. 1
an oil separator in vertical section and
FIG. 2
the oil separator off FIG. 1 in horizontal section along the line II - II in FIG. 1 ,

Die beiden Figuren der Zeichnung zeigen ein Ausführungsbeispiel für einen Ölabscheider 1, der vier Zyklone 11, 12, 13, 14 umfasst. Die Zyklone 11 - 14 sind zu einem einteiligen kompakten Haupt-Bauteil 10 zusammengefasst.The two figures of the drawing show an embodiment of an oil separator 1, which comprises four cyclones 11, 12, 13, 14. The cyclones 11-14 are combined to form a one-piece compact main component 10.

In dem in Figur 1 gezeigten Vertikalschnitt durch den Ölabscheider ist der Zyklon 11 in Ansicht und der Zyklon 12 im Vertikalschnitt erkennbar, wobei die zugehörige Schnittlinie I - I entsprechend der Figur 2 abgewinkelt verläuft. Die Zyklone 13 und 14 sind in der Figur 1 nicht sichtbar, weil sie vor der Schnittebene liegen.In the in FIG. 1 shown vertical section through the oil separator is the cyclone 11 in view and the cyclone 12 in vertical section recognizable, the associated section line I - I according to the FIG. 2 angled runs. The cyclones 13 and 14 are in the FIG. 1 not visible because they lie in front of the cutting plane.

Rechts oben in Figur 1 ist ein Haupt-Zuströmkanal 20 erkennbar, dessen äußeres, d.h. rechtes Ende als Übergangsstück 28 mit einem Leitungsanschlussstutzen 29, der im Querschnitt kreisrund ist, ausgebildet ist. Von rechts nach links gesehen, d.h. in Strömungsrichtung eines durch den Ölabscheider 1 zu leitenden Kurbelgehäuse-Entlüftungsgases, wird der Zuströmkanal 20 flacher und, was in Figur 1 nicht sichtbar ist, zugleich breiter, wobei dessen Querschnittsfläche im Wesentlichen konstant bleibt. Der Zuströmkanal 20 teilt sich in vier einzelne Zuströmkanäle oder Gaseinlässe 21 - 24 auf, von denen in Figur 1 nur der Kanal oder Einlass 22 zum zweiten Zyklon 12 sichtbar ist. Auf diese Weise wird der ankommende Gasstrom auf die vier Zyklone 11 - 14 verteilt, wobei jeweils eine tangentiale Anströmung erfolgt. Durch diese tangentiale Anströmung wird der Gasstrom in eine Wirbelströmung versetzt, die dafür sorgt, dass mitgeführte Öltröpfchen sich an der inneren Oberfläche der Zyklone 11 - 14 niederschlagen und von dort nach unten fließen. Die von den Öltröpfchen befreite Gasströmung tritt aus jedem Zyklon 11 - 14 durch je einen zugehörigen Gasauslass 31 - 34 nach oben aus und gelangt durch eine Sammelhaube 38 in einen Leitungsanschlussstutzen 39. An diesen Anschlussstutzen 39 ist eine Gasleitung anschließbar, die zu einem Luftansaugtrakt einer zugehörigen Brennkraftmaschine führt.Top right in FIG. 1 is a main inflow passage 20 can be seen, the outer, ie right end is formed as a transition piece 28 with a line connection piece 29 which is circular in cross-section. When viewed from right to left, ie in the direction of flow of a crankcase ventilation gas to be conducted through the oil separator 1, the inflow channel 20 becomes flatter and, as shown in FIG FIG. 1 is not visible, at the same time wider, its cross-sectional area remains substantially constant. The inflow channel 20 is divided into four individual inflow channels or gas inlets 21 - 24, of which in FIG. 1 only the channel or inlet 22 to the second cyclone 12 is visible. In this way, the incoming gas stream is distributed to the four cyclones 11-14, wherein in each case a tangential flow takes place. Due to this tangential flow, the gas flow is put into a turbulent flow, which ensures that entrained oil droplets precipitate on the inner surface of the cyclones 11-14 and flow down from there. The freed of the oil droplets gas flow exits from each cyclone 11 - 14 through each associated gas outlet 31 - 34 upwards and passes through a collecting cap 38 in a line connection piece 39. At this connection piece 39, a gas line can be connected to an air intake tract of an associated Internal combustion engine leads.

Das in den Zyklonen 11 - 14 abgeschiedene Öl fließt innerhalb der Zyklone 11 - 14 nach unten und tritt an deren unterem Ende durch je einen Auslass 41 - 44 in einen Sammeltrichter 48 aus. Im Zentrum des Sammeltrichters 48 ist an dessen tiefster Stelle ein Leitungsanschlussstutzen 49 vorgesehen, an den eine Ölrückführleitung zu einem Ölsumpf der zugehörigen Brennkraftmaschine anschließbar ist.The oil separated in the cyclones 11-14 flows downwards within the cyclones 11-14 and exits through an outlet 41-44 into a collection funnel 48 at the lower end thereof. In the center of the collecting funnel 48, a line connection pipe 49 is provided at its lowest point, to which an oil return line to an oil sump of the associated internal combustion engine can be connected.

In dem in Figur 2 gezeigten Querschnitt durch den Ölabscheider 1 ist besonders die platzsparende und kompakte Anordnung der vier Zyklone 11 - 14 ersichtlich. Ganz rechts ist der Leitungsanschlussstutzen 29 sichtbar, an den eine vom Kurbelgehäuse der zugehörigen Brennkraftmaschine kommende Leitung anschließbar ist, durch die aus dem Kurbelgehäuse kommendes, mit Öltröpfchen befrachtetes Kurbelgehäuse-Entlüftungsgas zum Ölabscheider 1 führbar ist. Weiter nach links wird erkennbar, dass sich der Haupt-Zuströmkanal 20 im Bereich des Übergangsstücks 28 verbreitert und, wie anhand von Figur 1 erläutert, zugleich abflacht. Noch weiter nach links teilt sich der Haupt-Zuströmkanal 20 in vier Zuströmkanäle oder Gaseinlässe 21 - 24 auf, die jeweils einem der Zyklone 11 - 14 zugeordnet sind. Dabei führt jeder Zuströmkanal oder Gaseinlass 21 - 24 tangential in seinen zugehörigen Zyklon 11 - 14. Bei den beiden Zyklonen 11 und 12 ist der Verlauf so, dass sich eine rechtsdrehende Gasströmung ergibt, während bei den Zyklonen 13 und 14 die Gasströmung unter Linksdrehung erfolgt. Im inneren Bereich jedes Zyklons 11 - 14 fällt der Blick jeweils durch den zugehörigen Gasauslass 31 - 34 auf den jeweils ganz unten am Zyklon 11 - 14 angeordneten Auslass 41 - 44. Ganz unten ist im Hintergrund in Figur 2 noch ein kleiner Teil des Sammeltrichters 48 für das abgeschiedene Öl erkennbar.In the in FIG. 2 shown cross section through the oil separator 1 is particularly the space-saving and compact arrangement of the four cyclones 11 - 14 can be seen. On the right, the line connection piece 29 is visible, to which a line coming from the crankcase of the associated internal combustion engine can be connected, through which crankcase ventilation gas coming from the crankcase, charged with oil droplets, can be guided to the oil separator 1. Further to the left, it can be seen that the main inflow channel 20 widened in the region of the transition piece 28 and, as with reference to FIG. 1 explained, flattening at the same time. Still further to the left, the main inflow channel 20 divides into four inflow channels or gas inlets 21-24, which are each assigned to one of the cyclones 11-14. In this case, each inflow channel or gas inlet 21-24 leads tangentially into its associated cyclone 11-14. In the case of the two cyclones 11 and 12, the course is such that a clockwise gas flow results, while in the case of the cyclones 13 and 14 the gas flow takes place under left-hand rotation. In the inner region of each cyclone 11-14, the view falls in each case through the associated gas outlet 31-34 onto the outlet 41-44 respectively arranged at the very bottom of the cyclone 11-14. At the very bottom is in the background in FIG FIG. 2 still a small part of the collecting funnel 48 for the separated oil recognizable.

Besonders die Figur 2 verdeutlicht, dass der ankommende Gasstrom ohne Umlenkung und somit praktisch ohne Erhöhung des Strömungswiderstandes auf die vier einzelnen Zyklone 11 - 14 verteilt wird. Durch diese Aufteilung des Gasstroms auf mehrere Zyklone ergibt sich eine verbesserte Ölabscheidung, insbesondere bei geringeren anfallenden Mengen an Entlüftungsgasen, bei zugleich geringerer Empfindlichkeit gegen Schwankungen des Volumenstroms des Kurbelgehäuse-Entlüftungsgases.Especially the FIG. 2 illustrates that the incoming gas stream without deflection and thus virtually without increasing the flow resistance to the four individual cyclones 11 - 14 is distributed. By this division of the gas flow to a plurality of cyclones results in an improved oil separation, especially at lower accumulating amounts of vent gases, at the same time less sensitivity to fluctuations in the flow rate of the crankcase ventilation gas.

Wie das Ausführungsbeispiel des Ölabscheiders 1 weiter zeigt, lässt sich dieser aus wenigen Einzelteilen, im vorliegenden Beispiel aus dem Haupt-Bauteil 10, dem Übergangsstück 28, den zu einem Teil zusammengefaßten Gasauslässen 31 - 34, der Sammelhaube 38 und dem Sammeltrichter 48 herstellen. Dazu kommen noch zugehörige Verbindungsleitungen, die vorteilhaft als Schläuche ausgeführt sind, wie dies an sich bekannt ist. Alternativ können einzelne oder alle Verbindungsleitungen, zumindest über Teilstrecken, in weitere Komponenten der Brennkraftmaschine integriert sein, was die Fertigung und Montage separater Leitungen reduziert oder sogar ganz überflüssig macht. Die genannten Teile des Ölabscheiders 1 sind zweckmäßig Druckgussteile aus Leichtmetall oder Spritzgußteile aus Kunststoff, wobei ein Kunststoff zu wählen ist, der den auftretenden thermischen und chemischen Belastungen gewachsen ist.As the embodiment of the oil separator 1 further shows, this can be made of a few individual parts, in the present example from the main component 10, the transition piece 28, the combined gas outlets 31-34, the collecting hood 38 and the collecting funnel 48. In addition, there are associated connecting lines, which are advantageously designed as hoses, as is known per se. Alternatively, individual or all connecting lines, at least over sections, in other components of the internal combustion engine be integrated, which reduces the production and installation of separate lines or even makes completely unnecessary. The said parts of the oil separator 1 are suitable die castings made of light metal or injection-molded parts made of plastic, wherein a plastic is to be selected, which is able to cope with the occurring thermal and chemical stresses.

Claims (4)

  1. Oil separator (1) for removing oil from the crankcase ventilation gases of an internal combustion engine for motor vehicles, wherein the oil separator (1) comprises a cyclone which exhibits a gas inlet connected to the crankcase of the internal combustion engine, a gas outlet connected to the suction tract of the internal combustion engine and an oil outlet connected to an oil sump of the internal combustion engine,
    characterised in that
    a) instead of a single cyclone, multiple parallel connected smaller cyclones (11, 12, 13, 14) are provided, wherein the feeding passages (21, 22, 23, 24) leading to each gas inlet of the single cyclones (11, 12, 13, 14) are formed from a single splitting or dividing main feeding passage (20) and wherein the gas flow released from the oil drips from each cyclone (11, 12, 13, 14) egresses upwards through every associated gas outlet (31, 32, 33, 34) and reaches a collector hood (38),
    b) the bodies of the single cyclones (11-14) exhibit central axes which run parallel to one another and are combined to form a cyclone body member, and
    c) the individual parts of the oil separator are diecast parts of light metal and/or injection moulding parts of plastic.
  2. Oil separator according to claim 1, characterised in that the cyclones (11-14) are made with a tangential inflow.
  3. Oil separator according to claim 1, characterised in that the main feeding passage (20) and the single feeding passages (21-24) are combined to form a feeding passage member.
  4. Oil separator according to claim 3, characterised in that the cyclone body member and the feeding passage member are combined to form a main member (10).
EP00916937.6A 1999-03-18 2000-03-14 Oil separator for removing oil from the crankcase ventilation gases of an internal combustion engine Expired - Lifetime EP1080298B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19912271 1999-03-18
DE19912271A DE19912271A1 (en) 1999-03-18 1999-03-18 Oil separator for de-oiling crankcase ventilation gases of an internal combustion engine
PCT/EP2000/002230 WO2000057038A1 (en) 1999-03-18 2000-03-14 Oil separator for removing oil from the crankcase ventilation gases of an internal combustion engine

Publications (3)

Publication Number Publication Date
EP1080298A1 EP1080298A1 (en) 2001-03-07
EP1080298B1 EP1080298B1 (en) 2003-07-30
EP1080298B2 true EP1080298B2 (en) 2018-08-29

Family

ID=7901552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00916937.6A Expired - Lifetime EP1080298B2 (en) 1999-03-18 2000-03-14 Oil separator for removing oil from the crankcase ventilation gases of an internal combustion engine

Country Status (7)

Country Link
US (1) US6279556B1 (en)
EP (1) EP1080298B2 (en)
JP (1) JP2002540338A (en)
KR (1) KR100636758B1 (en)
BR (1) BR0005393A (en)
DE (4) DE19912271A1 (en)
WO (1) WO2000057038A1 (en)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19918311A1 (en) * 1999-04-22 2000-11-02 Hengst Walter Gmbh & Co Kg Process for de-oiling crankcase ventilation gases and devices for carrying out the process
DE29908116U1 (en) * 1999-05-06 2000-09-28 Hengst Walter Gmbh & Co Kg Oil separator for de-oiling crankcase ventilation gases of an internal combustion engine
JP3967552B2 (en) * 2001-02-19 2007-08-29 本田技研工業株式会社 Gas-liquid separator for engines
DE10127819A1 (en) * 2001-06-07 2003-01-02 Bosch Gmbh Robert Oil separator for crankcase gases of an internal combustion engine
FR2835884B1 (en) * 2002-02-12 2005-03-18 Valeo Thermique Moteur Sa METHOD FOR CONTROLLING THE GAS TEMPERATURE ADMITTED IN A MOTOR VEHICLE ENGINE, EXCHANGER AND DEVICE FOR MANAGING THE TEMPERATURE OF THESE GASES
DE10205981B4 (en) * 2002-02-14 2014-01-09 Mann + Hummel Gmbh Switchable cyclones for separating particles or drops from a fluid stream
DE20211329U1 (en) * 2002-07-26 2003-12-04 Hengst Gmbh & Co.Kg Oil separator for separating oil from the crankcase ventilation gas of an internal combustion engine
AT6652U1 (en) * 2002-10-17 2004-01-26 Avl List Gmbh CRANKCASE VENTILATION SYSTEM OF AN INTERNAL COMBUSTION ENGINE
DE10251947A1 (en) 2002-11-08 2004-05-19 Robert Bosch Gmbh Device to separate fluid esp. oil from a gas flow in crankcase of IC engines has distribution valve controlling separator elements dependent upon flow volume
DE20302220U1 (en) * 2003-02-11 2004-06-24 Hengst Gmbh & Co.Kg Oil separator for de-oiling internal combustion engine crankcase venting gases has oil separation insert in form of cyclone part for insertion into unaltered housing instead of mesh body
DE10313192C5 (en) * 2003-03-25 2017-04-13 Volkswagen Ag Internal combustion engine and method for operating the same
DE10325055A1 (en) * 2003-06-02 2004-12-23 Mann + Hummel Gmbh Device for switching cyclones
DE102004006082A1 (en) 2004-02-06 2005-08-25 Polytec Automotive Gmbh & Co. Kg Device for removing oil from blowby gases from combustion engines comprises cyclones equipped with an automatic valve which covers gas outlet openings of an immersion pipe
DE102004006834A1 (en) * 2004-02-12 2005-08-25 Mann + Hummel Gmbh separating
KR100549990B1 (en) * 2004-04-16 2006-02-08 삼성광주전자 주식회사 Dust collecting apparatus for vacuum cleaner
JP2006083809A (en) * 2004-09-17 2006-03-30 Yamaha Motor Co Ltd Oil tank for engine driven type vehicle
US7896946B1 (en) 2004-09-21 2011-03-01 Cummins Filtration Ip, Inc. Multistage multicontroller variable impactor
US7648543B2 (en) * 2004-09-21 2010-01-19 Cummins Filtration Ip Inc. Multistage variable impactor
US7614390B2 (en) * 2007-08-23 2009-11-10 Cummins Filtration Ip Inc. Two stage drainage gas-liquid separator
US7473291B2 (en) * 2004-09-21 2009-01-06 Cummins Filtration Ip, Inc. Inertial gas-liquid separator with variable flow actuator
US8048212B2 (en) * 2004-09-21 2011-11-01 Cummins Filtration Ip, Inc. Inertial gas-liquid separator with valve and variable flow actuator
US7828865B2 (en) 2008-07-31 2010-11-09 Cummins Filtration Ip, Inc. Gas-liquid separator with dual flow impaction and coalescence
US8075654B2 (en) * 2004-09-21 2011-12-13 Cummins Filtration Ip, Inc. Gas-liquid separator with expansion transition flow
US7238216B2 (en) * 2004-09-21 2007-07-03 Cummins Filtration Ip, Inc. Variable flow inertial gas-liquid impactor separator
US7406960B2 (en) * 2004-12-10 2008-08-05 Fleetguard, Inc. Oil mist removal device with oil fill
US7964009B2 (en) * 2004-09-21 2011-06-21 Cummins Filtration Ip, Inc. Inertial gas-liquid separator with axially variable orifice area
US7246612B2 (en) * 2004-10-08 2007-07-24 Toyota Technical Center Usa, Inc Oil separator
KR100698294B1 (en) * 2004-11-25 2007-03-23 엘지전자 주식회사 Cyclone type oil separator
US7475680B2 (en) * 2005-04-06 2009-01-13 Polaris Industries Inc. Integrated liquid-gas separator and reservoir
US7140358B1 (en) 2005-05-06 2006-11-28 Toyota Technical Center Usa, Inc. Oil separator
US7582130B2 (en) * 2006-04-14 2009-09-01 Cummins Filtration Ip Inc. Coalescing filter assembly
US7828869B1 (en) 2005-09-20 2010-11-09 Cummins Filtration Ip, Inc. Space-effective filter element
US7959714B2 (en) * 2007-11-15 2011-06-14 Cummins Filtration Ip, Inc. Authorized filter servicing and replacement
DE102005061256A1 (en) * 2005-12-20 2007-06-21 Günter Dr. Slowik Method and device for deoiling crankcase ventilation gases of an internal combustion engine
WO2007087663A2 (en) * 2006-02-02 2007-08-09 Avl List Gmbh Crankcase breathing system
US7678169B1 (en) * 2006-07-12 2010-03-16 Cummins Filtration Ip Inc. Oil fill cap with air/oil separator
JP4626586B2 (en) * 2006-08-03 2011-02-09 トヨタ紡織株式会社 Gas-liquid separator
US7594501B2 (en) * 2006-12-22 2009-09-29 Dichtungstechnik G. Bruss Gmbh & Co., Kg Cylinder head cover for an internal combustion engine
DE202007003292U1 (en) 2007-03-02 2008-07-10 Hengst Gmbh & Co.Kg Oil separator with at least one cyclone
US20080264018A1 (en) * 2007-04-26 2008-10-30 Herman Peter K Inertial gas-liquid separator with slot nozzle
US20080286403A1 (en) * 2007-05-16 2008-11-20 Husky Injection Molding Systems Ltd. Air Ring for a Stripper Assembly
US7550035B1 (en) 2007-05-16 2009-06-23 Cummins Filtration Ip, Inc. Electrostatic precipitator with inertial gas-contaminant impactor separator
US7699029B2 (en) * 2007-07-26 2010-04-20 Cummins Filtration Ip, Inc. Crankcase ventilation system with pumped scavenged oil
US7849841B2 (en) * 2007-07-26 2010-12-14 Cummins Filtration Ip, Inc. Crankcase ventilation system with engine driven pumped scavenged oil
DE102007049725A1 (en) * 2007-10-16 2009-04-23 Mann + Hummel Gmbh Oil separation device, in particular for crankcase ventilation in an internal combustion engine
US7857883B2 (en) * 2007-10-17 2010-12-28 Cummins Filtration Ip, Inc. Inertial gas-liquid separator with constrictable and expansible nozzle valve sidewall
US7776139B2 (en) * 2008-02-06 2010-08-17 Cummins Filtration Ip, Inc. Separator with transfer tube drainage
JP4510108B2 (en) * 2008-03-13 2010-07-21 小島プレス工業株式会社 Oil separator for blow-by gas
JP2010096107A (en) * 2008-10-17 2010-04-30 Kojima Press Industry Co Ltd Cyclone separator type oil separator device
KR101028552B1 (en) 2008-11-18 2011-04-11 기아자동차주식회사 Oil separation apparatus for blow-by gas
US8082907B2 (en) * 2009-03-31 2011-12-27 Mann+Hummel Gmbh Air/oil separating PCV apparatus
DE102009040330A1 (en) 2009-09-07 2011-03-10 Fev Motorentechnik Gmbh Oil extractor for oil removal of ventilation gases from crankcase of internal combustion engine, has gas inlet, gas outlet, oil outlet and multiple cyclone filters which are connected between gas inlet and oil outlet
US8152884B1 (en) 2009-11-20 2012-04-10 Cummins Filtration Ip Inc. Inertial gas-liquid impactor separator with flow director
DE102010036399B4 (en) 2010-07-14 2013-11-21 Woco Industrietechnik Gmbh Valve, separation system and method for the separation of particles
US8591635B2 (en) 2011-12-19 2013-11-26 Chrysler Group Llc Fluid aeration-reduction system
EP2626139B1 (en) * 2012-02-13 2014-12-17 Belenos Clean Power Holding AG Cyclone separator for gas liquid separation
EP2868878B1 (en) * 2012-07-04 2017-06-21 Aisin Seiki Kabushiki Kaisha Oil separator
JP2014013012A (en) * 2012-07-04 2014-01-23 Aisin Seiki Co Ltd Oil separator
JP5676529B2 (en) * 2012-07-04 2015-02-25 アイシン精機株式会社 Oil separator
JP5495402B2 (en) * 2012-11-22 2014-05-21 アイシン精機株式会社 Oil separator
JP5846059B2 (en) * 2012-07-05 2016-01-20 トヨタ自動車株式会社 Engine oil separator
US9138671B2 (en) 2012-08-30 2015-09-22 Cummins Filtration Ip, Inc. Inertial gas-liquid separator and porous collection substrate for use in inertial gas-liquid separator
US9528407B2 (en) * 2013-12-12 2016-12-27 Toyota Motor Engineering & Manufacturing North America, Inc. High efficiency cyclone oil separator device
JP2015137631A (en) * 2014-01-24 2015-07-30 アイシン精機株式会社 Oil separator for blow-by gas
JP2016113999A (en) * 2014-12-17 2016-06-23 アイシン精機株式会社 Oil mist separator
US9795898B2 (en) 2015-03-31 2017-10-24 Jci Cyclonics Ltd. Cyclonic separator system
WO2016172770A1 (en) * 2015-04-30 2016-11-03 ATLAS COPCO AIRPOWER ,naamloze vennootschap Device for separating liquid from a gas stream coming from a liquid injected vacuum pump or compressor
US10661210B2 (en) 2015-09-15 2020-05-26 Miniature Precision Components, Inc. Oil separator including spiral members defining helical flow paths
US10286347B2 (en) 2015-09-15 2019-05-14 Miniature Precision Components, Inc. Oil separator including spiral members defining helical flow paths
US20180036653A1 (en) * 2016-08-03 2018-02-08 Jci Cyclonic Technologies Ltd. Dual cyclone separator
BE1025205B1 (en) * 2017-04-27 2018-12-11 Atlas Copco Airpower Naamloze Vennootschap Device for separating liquid from a gas stream in a liquid-injected compressor and method thereof
CN114622996A (en) * 2020-12-10 2022-06-14 通用电气阿维奥有限责任公司 Air/oil separator apparatus and method

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2378632A (en) † 1942-07-27 1945-06-19 Hooker Jr Apparatus for separating solids from liquids
US2521380A (en) † 1948-02-05 1950-09-05 Columbian Carbon Centrifugal separator
AT170856B (en) † 1948-12-15 1952-04-10 Stamicarbon Cyclone or swirl chamber or multiple cyclone or multiple swirl chamber
DE6602410U (en) † 1968-09-16 1969-05-29 Universal Oil Prod Co DEVICE FOR SEPARATING SUSPENDED PARTICLES FROM GASES.
DE2439648A1 (en) † 1974-07-09 1976-01-29 Asizawa Tekko Kk Multi-cyclone dust suppressor with even distribution of crude gas - for cyclone units with waste gas cylinders of varying length
GB2012626A (en) † 1977-12-29 1979-08-01 Seiko Instr & Electronics Oil separator
DE3128470C2 (en) † 1981-07-18 1983-05-11 Bayerische Motoren Werke Ag, 8000 Muenchen Cyclone oil separator
DE3152747A1 (en) † 1981-07-18 1983-06-30 Bayerische Motoren Werke Ag Cyclone oil separator
US4702846A (en) † 1983-01-21 1987-10-27 Nobar Ky Method of and apparatus for sequentially separating a medium into different components
EP0256491B1 (en) † 1986-08-13 1990-09-19 Anton Piller GmbH & Co. KG Centrifugal dust separator with a plurality of cyclones
EP0558091A1 (en) † 1992-02-27 1993-09-01 Atomic Energy Corporation Of South Africa Limited Filtration apparatus
DE4214324A1 (en) † 1992-04-30 1993-11-04 Knecht Filterwerke Gmbh Separator device for oil-containing aerosols - has float valve, to prevent reverse oil flow in downpipe from cyclone to oil sump
DE4429822A1 (en) † 1994-08-23 1996-02-29 Mann & Hummel Filter Device for separating oil aerosol from air
DE4400489C2 (en) † 1994-01-11 1996-03-28 Filtan Gmbh Centrifugal separator, device and method
WO1996022836A1 (en) † 1995-01-25 1996-08-01 Bielefeldt Ernst August Process and device for centrifugally separating substances
JPH08319814A (en) † 1995-05-26 1996-12-03 Kojima Press Co Ltd Oil trapper for internal combustion engine
WO1997023711A1 (en) † 1995-12-22 1997-07-03 Rover Group Limited A liquid from gas separator and an internal combustion engine including same
DE29801034U1 (en) † 1997-01-28 1998-05-07 Pall Corp., East Hills, N.Y. Separator
DE19700733A1 (en) † 1997-01-11 1998-07-23 Bosch Gmbh Robert Cylinder head cover for internal combustion engine of motor vehicle
DE19709910A1 (en) † 1997-03-11 1998-09-24 Daimler Benz Ag Crankcase ventilation for an internal combustion engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3634122A1 (en) * 1986-10-07 1988-04-21 Brombach Hansjoerg SWIVEL SEPARATOR
DE3909402A1 (en) * 1989-03-22 1990-09-27 Schumacher Gmbh & Co Kg Filter for gaseous media
US5239972A (en) * 1992-03-24 1993-08-31 Nippon Soken, Inc. Gas/liquid separation device
DE4344506C2 (en) * 1993-12-24 1998-04-16 Knecht Filterwerke Gmbh Cyclone for separating oil
JPH08296422A (en) * 1995-04-26 1996-11-12 Tokai Rubber Ind Ltd Oil mist recovery device
DE19704594A1 (en) * 1997-02-07 1998-08-13 Knecht Filterwerke Gmbh Lube oil filling line of an internal combustion engine with oil mist separator
JPH10220215A (en) * 1997-02-12 1998-08-18 Kubota Corp Breather device for engine

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2378632A (en) † 1942-07-27 1945-06-19 Hooker Jr Apparatus for separating solids from liquids
US2521380A (en) † 1948-02-05 1950-09-05 Columbian Carbon Centrifugal separator
AT170856B (en) † 1948-12-15 1952-04-10 Stamicarbon Cyclone or swirl chamber or multiple cyclone or multiple swirl chamber
DE6602410U (en) † 1968-09-16 1969-05-29 Universal Oil Prod Co DEVICE FOR SEPARATING SUSPENDED PARTICLES FROM GASES.
DE2439648A1 (en) † 1974-07-09 1976-01-29 Asizawa Tekko Kk Multi-cyclone dust suppressor with even distribution of crude gas - for cyclone units with waste gas cylinders of varying length
GB2012626A (en) † 1977-12-29 1979-08-01 Seiko Instr & Electronics Oil separator
DE3128470C2 (en) † 1981-07-18 1983-05-11 Bayerische Motoren Werke Ag, 8000 Muenchen Cyclone oil separator
DE3152747A1 (en) † 1981-07-18 1983-06-30 Bayerische Motoren Werke Ag Cyclone oil separator
US4702846A (en) † 1983-01-21 1987-10-27 Nobar Ky Method of and apparatus for sequentially separating a medium into different components
EP0256491B1 (en) † 1986-08-13 1990-09-19 Anton Piller GmbH & Co. KG Centrifugal dust separator with a plurality of cyclones
EP0558091A1 (en) † 1992-02-27 1993-09-01 Atomic Energy Corporation Of South Africa Limited Filtration apparatus
DE4214324A1 (en) † 1992-04-30 1993-11-04 Knecht Filterwerke Gmbh Separator device for oil-containing aerosols - has float valve, to prevent reverse oil flow in downpipe from cyclone to oil sump
DE4400489C2 (en) † 1994-01-11 1996-03-28 Filtan Gmbh Centrifugal separator, device and method
DE4429822A1 (en) † 1994-08-23 1996-02-29 Mann & Hummel Filter Device for separating oil aerosol from air
WO1996022836A1 (en) † 1995-01-25 1996-08-01 Bielefeldt Ernst August Process and device for centrifugally separating substances
JPH08319814A (en) † 1995-05-26 1996-12-03 Kojima Press Co Ltd Oil trapper for internal combustion engine
WO1997023711A1 (en) † 1995-12-22 1997-07-03 Rover Group Limited A liquid from gas separator and an internal combustion engine including same
DE69607386T2 (en) † 1995-12-22 2000-11-02 Rover Group Ltd., Warwick A LIQUID FROM THE GAS SEPARATOR AND THE INTERNAL COMBUSTION ENGINE EQUIPPED WITH IT
DE19700733A1 (en) † 1997-01-11 1998-07-23 Bosch Gmbh Robert Cylinder head cover for internal combustion engine of motor vehicle
DE29801034U1 (en) † 1997-01-28 1998-05-07 Pall Corp., East Hills, N.Y. Separator
DE19709910A1 (en) † 1997-03-11 1998-09-24 Daimler Benz Ag Crankcase ventilation for an internal combustion engine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Teilekatalog BMW, Bildtafel 11-2653, Ausgabe 10/1998 und 12/1998 †
Ullmann, Enzyklopädie der technischen Chemie, 4. Auflage, Band 2, 1972, Seiten 227-232. †

Also Published As

Publication number Publication date
US6279556B1 (en) 2001-08-28
EP1080298A1 (en) 2001-03-07
BR0005393A (en) 2001-01-30
DE20023969U1 (en) 2008-03-06
JP2002540338A (en) 2002-11-26
EP1080298B1 (en) 2003-07-30
DE20023968U1 (en) 2008-03-06
DE19912271A1 (en) 2000-09-28
DE50003081D1 (en) 2003-09-04
KR100636758B1 (en) 2006-10-20
WO2000057038A1 (en) 2000-09-28
KR20010071280A (en) 2001-07-28

Similar Documents

Publication Publication Date Title
EP1080298B2 (en) Oil separator for removing oil from the crankcase ventilation gases of an internal combustion engine
EP1525376B1 (en) Oil separator for the separation of oil from the crankcase ventilation gas of an internal combustion engine
DE102005059014B4 (en) Oil separator for an internal combustion engine
EP1095209B1 (en) Oil separator for deoiling crankcase ventilation gases of an internal combustion engine
EP2052136B1 (en) Device for seperating liquids from gases
DE102005063274B4 (en) oil separator
DE102013207631B4 (en) OIL SEPARATOR
DE102006051143B4 (en) Adaptive oil separator
DE10235983A1 (en) Air-oil separator for an engine
DE10235761B4 (en) suction device
DE102008017919A1 (en) Separator for crankcase ventilation of an internal combustion engine
EP0690209A1 (en) Crankcase ventilation for internal combustion engines
DE202004010550U1 (en) Device for regulating the pressure in the crankcase of an internal combustion engine and for the oil mist separation from the crankcase ventilation gas
DE202006015231U1 (en) Device for separating particles from a gas stream
DE19701977A1 (en) Internal combustion engine with a valve chamber cover
EP0730086B1 (en) Cyclone separator for the crankcase ventilation of an internal combustion engine with a ventilation valve
DE20101572U1 (en) Liquid filter with ventilation holes
DE202007003292U1 (en) Oil separator with at least one cyclone
DE102005003113A1 (en) Separator device for precipitating oil from crankcase ventilating gases in an internal combustion engine has a gas-feeder pipe running at a tangent into a separator/cyclone chamber
DE102004041768A1 (en) Filter for removal of water and dirt from diesel fuel has filter housing wall with outwardly concave curvature which additionally functions as cyclone separator
DE10323343B4 (en) Separator and its use
DE102010009722A1 (en) Oil mist separator with at least one cyclone
DE20304016U1 (en) Cylinder head hood for a combustion engine has double shell with gap for pulse damping for ventilation channel
DE202006019819U1 (en) pre-separator
DE202018103711U1 (en) separators

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20001123

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HENGST GMBH & CO. KG

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50003081

Country of ref document: DE

Date of ref document: 20030904

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040108

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

ET Fr: translation filed
26 Opposition filed

Opponent name: MANN + HUMMEL GMBH

Effective date: 20040327

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: POLYTEC AUTOMOTIVE GMBH & CO. KG

Effective date: 20040424

Opponent name: MANN + HUMMEL GMBH

Effective date: 20040327

26 Opposition filed

Opponent name: MAHLE FILTERSYSTEME GMBH ROTERMUND + PFUSCH + BERN

Effective date: 20040429

Opponent name: MANN + HUMMEL GMBH

Effective date: 20040327

Opponent name: POLYTEC AUTOMOTIVE GMBH & CO. KG

Effective date: 20040424

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: POLYTEC AUTOMOTIVE GMBH & CO. KG

Effective date: 20040424

Opponent name: MAHLE FILTERSYSTEME GMBH

Effective date: 20040429

Opponent name: MANN + HUMMEL GMBH

Effective date: 20040327

RDAD Information modified related to despatch of communication that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSCREV1

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PLBP Opposition withdrawn

Free format text: ORIGINAL CODE: 0009264

PLBP Opposition withdrawn

Free format text: ORIGINAL CODE: 0009264

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLAH Information related to despatch of examination report in opposition + time limit modified

Free format text: ORIGINAL CODE: EPIDOSCORE2

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: HENGST SE & CO. KG

RDAD Information modified related to despatch of communication that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSCREV1

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PLBP Opposition withdrawn

Free format text: ORIGINAL CODE: 0009264

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

RIC2 Information provided on ipc code assigned after grant

Ipc: F01M 13/04 20060101ALI20171013BHEP

Ipc: F01M 13/00 20060101AFI20171013BHEP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50003081

Country of ref document: DE

Representative=s name: SCHULZE HORN & PARTNER GBR, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50003081

Country of ref document: DE

Owner name: HENGST SE & CO. KG, DE

Free format text: FORMER OWNER: HENGST GMBH & CO. KG, 48147 MUENSTER, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50003081

Country of ref document: DE

Owner name: HENGST SE, DE

Free format text: FORMER OWNER: HENGST GMBH & CO. KG, 48147 MUENSTER, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 50003081

Country of ref document: DE

Representative=s name: SCHULZE HORN & PARTNER GBR PATENT- UND RECHTSA, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50003081

Country of ref document: DE

Owner name: HENGST SE, DE

Free format text: FORMER OWNER: HENGST SE CO. KG, 48147 MUENSTER, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50003081

Country of ref document: DE

Owner name: HENGST SE, DE

Free format text: FORMER OWNER: HENGST SE & CO. KG, 48147 MUENSTER, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 50003081

Country of ref document: DE

Representative=s name: SCHULZE HORN & PARTNER GBR, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 50003081

Country of ref document: DE

Representative=s name: SCHULZE HORN & PARTNER GBR PATENT- UND RECHTSA, DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20180313

Year of fee payment: 19

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20180829

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): DE FR GB IT SE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R102

Ref document number: 50003081

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: NAV

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190328

Year of fee payment: 20

Ref country code: GB

Payment date: 20190325

Year of fee payment: 20

Ref country code: FR

Payment date: 20190326

Year of fee payment: 20

Ref country code: IT

Payment date: 20190321

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50003081

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20200313

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20200313

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190315