EP1285152B1 - Device for deoiling crankcase ventilation gases in an internal combustion engine - Google Patents

Device for deoiling crankcase ventilation gases in an internal combustion engine Download PDF

Info

Publication number
EP1285152B1
EP1285152B1 EP01951537A EP01951537A EP1285152B1 EP 1285152 B1 EP1285152 B1 EP 1285152B1 EP 01951537 A EP01951537 A EP 01951537A EP 01951537 A EP01951537 A EP 01951537A EP 1285152 B1 EP1285152 B1 EP 1285152B1
Authority
EP
European Patent Office
Prior art keywords
bypass channel
pressure
oil mist
mist separator
open
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
EP01951537A
Other languages
German (de)
French (fr)
Other versions
EP1285152A1 (en
Inventor
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.)
Ing Walter Hengst GmbH and Co KG
Original Assignee
Ing Walter Hengst GmbH 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
Application filed by Ing Walter Hengst GmbH and Co KG filed Critical Ing Walter Hengst GmbH and Co KG
Publication of EP1285152A1 publication Critical patent/EP1285152A1/en
Application granted granted Critical
Publication of EP1285152B1 publication Critical patent/EP1285152B1/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
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • 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
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • F01M13/023—Control valves in suction conduit
    • 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
    • F01M2013/0055—Layout of crankcase breathing systems having one or more deoilers with a by-pass
    • 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
    • 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
    • F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen
    • 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
    • F01M2013/0494—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 using check valves

Definitions

  • the invention relates to a device for de-oiling crankcase ventilation gases an internal combustion engine having at least one oil mist separator, the one with the crankcase connected gas inlet and connected to the air intake tract gas outlet and having an oil outlet connected to the oil sump of the internal combustion engine.
  • blow-by gases pass into the crankcase interior, which have to be removed, since otherwise an undesirable increase in the internal pressure in the crankcase would occur.
  • the blow-by gases are fed back as crankcase ventilation gases via a vent path to the air intake tract of the internal combustion engine.
  • the gas inlet-side pressure range as the 1st pressure range (p1) and the gas outlet side Pressure range referred to as 2nd pressure range (p2).
  • the differential pressure drop across the oil mist separator thus directly causes a Drukkerhöhung in the crankcase.
  • the degree of separation of the oil mist separator depending on the pressure difference.
  • ⁇ lnebelabscheider are preferably cyclones or so-called Koaleszenzabscheider used in the form of a knit or Wickelabscheiders.
  • a cyclone oil mist separator is known for example from DE 42 14 324 C2
  • a deoiling with a Koaleszenzabscheider is described in DE 197 29 439 A1.
  • the object of the invention is therefore an apparatus for de-oiling crankcase ventilation gases to develop the oil mist under all operating conditions causes and avoided with the impermissible pressure increases in the crankcase.
  • the device according to the invention uses a controllable with respect to its flow bypass channel vision, which is arranged as a bypass parallell to ⁇ lnebelabscheider in the crankcase ventilation path for this purpose, the bypass channel directly or indirectly with the crankcase (1st pressure area) connected gas inlet and a direct or indirectly connected to the air intake tract (2nd pressure area) connected gas outlet.
  • the bypass channel together with its control means is thus designed so that an oil separation in the bypass channel is also effected in the bypass channel due to flow deflection and impact separation or as a result of impaction.
  • separation behavior of the entire device oil mist separator plus controllable bypass channel
  • the degree of separation is still sufficiently high, even when the bypass is open to divert the separated oil in the bypass channel of the bypass channel, for example via an oil outlet connected to the oil sump.
  • the oil mist separator is designed to operate for a given volume flow has a certain degree of separation, which then also a certain differential pressure drop is implied. Care is taken in determining the operating point, that the differential pressure plus possibly a certain tolerance range below a is critical for crankcase pressure.
  • the inventively controllable bypass acts in the same way in a knitted or Wickelabscheider, which at the same volume flow due to contamination in the Over time, produce a significantly increased differential pressure of the overall device would.
  • a sensor is provided which detects whether the bypass channel is open or not opened bypass channel (valve in the open position) is then an optical or acoustic Warning signal for the operator of the internal combustion engine generated This signal is then an indication that he knitted and Wickelabscheider a certain degree of contamination has reached. The operator can then react accordingly and the Replace knit or wound separator.
  • differential pressure limiting effect of the controllable bypass channel naturally arises not only with differential pressure increases occurring after a certain time due to wear of the internal combustion engine or contamination of the oil mist separator, but also in the case of temporary differential pressure increases.
  • FIG. 1 shows a schematic arrangement of the device (1) according to the invention in the venting path.
  • the device (1) consisting of oil mist separator (2) and controllable Bypass passage (3) is between the crankcase (5) to be vented and the air intake tract (6) arranged in the air intake tract (6) prevailing vacuum can in certain Operating conditions of the internal combustion engine increase sharply.
  • a so-called crankcase vacuum control valve (9) which is arranged here before the oil removal device (1) Die Gas inlets (2A, 3A) of the oil mist separator (2) and the bypass channel (3) are so Therefore, indirectly via the crankcase vacuum control valve (9) with the pressure range of Crankcase (5) connected.
  • the gas inlet side pressure is marked as 1st pressure range
  • the gas outlets (2B, 3B) of the oil mist separator (2) and the bypass duct (3) are here connected directly to the air intake tract (6) marked as the second pressure range.
  • crankcase vacuum control valve (9) behind the deoiling (1) arranged.
  • FIG. 3 shows two differential pressure / volume flow characteristics for a cyclone separation device shown.
  • the solid line refers to a cyclone without the controllable one Bypass channel.
  • the dashed line on an embodiment of the invention Device consisting of cyclone and controllable bypass channel. How to recognize can, increases the differential pressure in a cyclone oil mist separator with increasing flow drastically. In particular, at wear of the internal combustion engine, the Volume flows permanently be so great that the associated differential pressure increase is indefensible This pressure increase counteracts the inventive device. As you can see from the diagram, opens at a certain flow, the a critical pressure drop across the cyclone automatically causes the bypass channel, so that the further increase of the differential pressure with increasing volume flow much flatter runs.
  • FIG 4 are two degrees of separation / volume flow characteristics for a cyclone separator shown.
  • the solid line refers to a cyclone without the controllable one By-pass, the dashed line on an embodiment of the invention Device consisting of cyclone and controllable bypass channel. How to recognize can, even if the bypass channel is still open, have a good separation efficiency - even if this is lower than in a cyclone oil mist separator without bypass channel.
  • FIG. 6 shows an enlarged view the bypass channel in the region of the valve body to illustrate the oil mist separation according to the impaction principle.
  • the spring-loaded valve body acts as a baffle plate of a dynamically adapting impactor whose flow gap (S) is adjustable via the valve spring differential pressure dependent.
  • the device according to the invention thus has the design point of the oil mist separator a high degree of separation, while at high flow rates overpressure in Crankcase is reliably avoided, whereby even then a sufficiently high degree of separation is effected.
  • FIG. 5 shows a section through an embodiment of the invention.
  • the oil mist separator as a cyclone (2) is formed on the integrally the bypass channel (3) is arranged
  • cyclone (2) and bypass channel (3) are integrally formed by injection molding, whereby the device according to the invention can be produced inexpensively.
  • the oil mist separator (2) and the bypass channel (3) which are formed here as an integral unit, housed in a receiving housing (7), which is only hinted at here.
  • the receiving housing (7) is connected to the first pressure range, so that the gas inlets (2A, 3A) of cyclone (2) and bypass channel (3) in the interior of the receiving space (7) with the pressure p 1 are applied.
  • the gas outlets (2B, 3B) of cyclone (2) and bypass channel (3) are compared with the pressure area inside the receiving housing (7) sealed out of this out in the second pressure range (to the air intake) out.
  • the gas outlets (2B, 3B) of the cyclone (2) and bypass channel (3) open into a sealed space (8) connected to the second pressure zone. Due to the integral assembly (cyclone + bypass channel) and the installation in a pressure-tight receiving housing (7) can be dispensed with separate, otherwise doubled connecting lines from the crankcase to the gas inlets from the gas outlets to the air intake.
  • a means (4) for differential pressure-dependent opening and closing is in the bypass channel (3) one of a compression spring (4C) acted upon valve body (4A) - here a valve plate - arranged.
  • a predetermined opening pressure difference the valve body (4A) of the compression spring (4C) against a valve seat arranged in the bypass channel (3) (4B) pressed into a closed position.
  • the valve body (4A) against the compression spring (4C) releasing a flow gap (S) raised from the valve seat (4B).
  • the opening pressure difference results from the spring constant and the flowed surface of the valve body (4A).
  • the compression spring (4C) with a targeted, Bias matched to the opening pressure difference in the bypass channel (3) install.
  • the installation length of the compression spring (4C) in the differential pressure State adjustable can be done, for example, by (not shown) that the Compression spring (4C) at its end facing away from the valve body (4A) on a support element (4D) is supported in the bypass channel (3) whose axial distance from the valve seat (4B) is adjustable.
  • valve body with compression spring and a valve body can be used, that of gravity below a certain opening pressure difference against the valve seat is pressed in a closed position, wherein above the opening pressure difference of Valve body is lifted from the valve seat with release of the flow gap.
  • a Hubbegrenzugnsanschlag (not shown) may be provided.
  • a throttle valve arranged in the bypass channel or an opening can be used under bias closing leaf valve (both embodiments are not shown), which also cause a de-oiling by impaction.
  • the oil sump wherein the oil separated from the cyclone (2) via a drain valve disposed on the oil outlet (2C) (2D) gets into the oil sump.
  • the oil separated from the bypass channel (3) can escape via the gas inlet (3A) and directly or via an intermediate reservoir (not shown) flow back into the oil sump or -drop.

Description

Die Erfindung betrifft eine Vorrichtung zum Entölen von Kurbelgehäuse-Entlüftungsgasen einer Brennkraftmaschine mit mindestens einem Ölnebelabscheider, der einen mit dem Kurbelgehäuse verbundenen Gaseinlaß und einen mit dem Luftansaugtrakt verbundenen Gasauslaß sowie eine mit dem Ölsumpf der Brennkraftmaschine verbundenen Ölauslaß aufweist.The invention relates to a device for de-oiling crankcase ventilation gases an internal combustion engine having at least one oil mist separator, the one with the crankcase connected gas inlet and connected to the air intake tract gas outlet and having an oil outlet connected to the oil sump of the internal combustion engine.

Beim Betrieb einer Brennkraftmaschine gelangen sogenannten Blow-By-Gase in den Kurbelgehäuse-Innenraum, die abgeführt werden müssen, da ansonsten eine unerwünschte Erhöhung des Innendrucks im Kurbelgehäuse entstehen würde. Zu diesem Zweck werden die Blow-By-Gase als Kurbelgehäuse-Entlüftungsgase über einen Entlüftungsweg dem Luftansaugtrakt der Brennkraftmaschine wieder zugeführt. Zur Entölung des Kurbelgehäuse-Entlüftungsgases werden die Gase in bekannter Weise durch einen Ölnebelabscheider geleitet, dessen Gaseinlaß direkt oder indirekt über ein Kürbelgehäuse-Unterdruckregelventil mit dem Kurbelgehäuse und dessen Gasauslaß direkt oder indirekt über das Kurbelgehäuse-Unterdruckregelventil mit dem Luftansaugtrakt verbunden ist. Dabei erzeugt der Ölnebelabscheider aufgrund seines Strömungswiderstandes eine Druckdifferenz (Δp = p1-p2).During operation of an internal combustion engine, so-called blow-by gases pass into the crankcase interior, which have to be removed, since otherwise an undesirable increase in the internal pressure in the crankcase would occur. For this purpose, the blow-by gases are fed back as crankcase ventilation gases via a vent path to the air intake tract of the internal combustion engine. To de-oil the crankcase ventilation gas, the gases are passed in a known manner through a Ölnebelabscheider whose gas inlet is directly or indirectly connected via a Kürbelgehäuse vacuum control valve with the crankcase and its gas outlet directly or indirectly via the crankcase vacuum control valve with the air intake. Due to its flow resistance, the oil mist separator generates a pressure difference (Δp = p 1 -p 2 ).

Im folgenden wird der gaseinlaßseitige Druckbereich als 1. Druckbereich (p1) und der gasauslaßseitige Druckbereich als 2. Druckbereich (p2) bezeichnet.In the following, the gas inlet-side pressure range as the 1st pressure range (p1) and the gas outlet side Pressure range referred to as 2nd pressure range (p2).

Der Differenzdruckabfall über den Ölnebelabscheider bewirkt somit unmittelbar eine Drukkerhöhung im Kurbelgehäuse. Außerdem ist der Abscheidegrad des Ölnebelabscheiders abhängig von der Druckdifferenz.The differential pressure drop across the oil mist separator thus directly causes a Drukkerhöhung in the crankcase. In addition, the degree of separation of the oil mist separator depending on the pressure difference.

Als Ölnebelabscheider werden vorzugsweise Zyklone oder sogenannten Koaleszenzabscheider in Form eines Gestrick- oder Wickelabscheiders eingesetzt. Ein Zyklon-Ölnebelabscheider ist beispielsweise aus der DE 42 14 324 C2 bekannt Eine Entölungsvorrichtung mit einem Koaleszenzabscheider ist in der DE 197 29 439 A1 beschrieben.As Ölnebelabscheider are preferably cyclones or so-called Koaleszenzabscheider used in the form of a knit or Wickelabscheiders. A cyclone oil mist separator is known for example from DE 42 14 324 C2 A deoiling with a Koaleszenzabscheider is described in DE 197 29 439 A1.

Problematisch bei dem Einsatz dieser Ölnebelabscheider ist jedoch, daß ihr Strömungwiderstand und damit die vom Ölnebelabscheider erzeugte Druckdifferenz nicht konstant ist, sondem sich je nach Art des Ölnebelabscheiders in Abhängigkeit von bestimmten Parametern ändert. Bei einem Zyklon hängt der Strömungswiderstand und damit die erzeugte Druckdifferenz vom Volumenstrom der Blow-By-Gase ab. Dieser ist wiederum abhängig vom Lastzustand und der Drehzahl der Brennkraftmaschine, die sich kurzzeitig ändern können. Darüber hinaus ist der Volumenstrom der Blow-By-Gase auch abhängig vom Verschleiß der Brennkraftmaschine, der im Laufe der Zeit zunimmt. Bei einem Gestrick- oder Wickelabscheider ist der Strömungswiderstand vom Verschmutzungsgrad abhängig, der ebenfalls im Laufe der Zeit zunehmen kann. Zur Abhilfe schlägt der bekannte Stand der Technik einen durch ein differenzdruckabhängig verstellbares Ventil gesteuerten Umgehungskanal vor. Nachteilig wird aber aus dem Gas, das den Umgehungskanal durchströmt, der Ölnebel nicht ausgeschieden.The problem with the use of these oil mist is, however, that their flow resistance and that the pressure difference generated by the oil mist separator is not constant, but so Depending on the type of oil mist separator depending on certain parameters changes. In a cyclone, the flow resistance and thus the generated pressure difference depends from the flow rate of the blow-by gases. This in turn depends on the load condition and the speed of the internal combustion engine, which can change briefly. About that In addition, the flow rate of the blow-by gases is also dependent on the wear of the internal combustion engine, which increases over time. In a knitting or Wickelabscheider is the flow resistance depends on the degree of soiling, which also in the course of Time can increase. To remedy the known prior art suggests a by differential pressure dependent adjustable valve controlled bypass channel. adversely but is not excreted from the gas flowing through the bypass channel, the oil mist.

Differenzdruckerhöhungen am Ölnebelabscheider, die ein bestimmtes Maß überschreiten, bewirken eine unzulässige Druckerhöhung im Kurbelgehäuse, die insbesondere dann, wenn sie lange wirkt oder häufig auftritt, zu Schäden an der Brennkraftmaschine führt.Differential pressure increases at the oil mist separator exceeding a certain level, cause an impermissible pressure increase in the crankcase, in particular when it acts long or frequently, leading to damage to the internal combustion engine.

Aufgabe der Erfindung ist es daher, eine Vorrichtung zur Entölung von Kurbelgehäuse-Entlüftungsgasen zu entwickeln, die unter allen Betriebsbdingungen eine Ölnebelabscheidung bewirkt und mit der unzulässige Druckerhöhungen im Kurbelgehäuse vermieden werden.The object of the invention is therefore an apparatus for de-oiling crankcase ventilation gases to develop the oil mist under all operating conditions causes and avoided with the impermissible pressure increases in the crankcase.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Die sich daran anschließenden Unteransprüche enthalten vorteilhafte Ausführungsformen und Wieterbildungen der Erfindung.This object is solved by the characterizing features of claim 1. Which subsequent subclaims contain advantageous embodiments and Wieterbildungen the invention.

Die Vorrichtung gemäß Erfindung verwendet einen hinsichtlich seiner Durchströmung steuerbaren Umgehungskanalsehen, der als Bypass paralell zum Ölnebelabscheider im Kurbelgehäuse-Entlüftungsweg angeordnet ist Zu diesem Zweck weist der Umgehungskanal einen direkt oder indirekt mit dem Kurbelgehäuse (1. Druckbereich) verbundenen Gas-einlaß und einen direkt oder indirekt mit dem Luftansaugtrakt (2. Druckbereich) verbundenen Gasauslaß auf. Zur Steuerung der Gasdruchströmung ist erfindungsgemäß ein Mittel vorgesehen, das in Abhängigkeit vom Differenzdruck (Δp = p1-p2) zwischen den beiden Druckbereichen den Umgehungskanal für die Durchströmung von Kurbelgehäuse-Entlüftungsgas stufenlos oder stufenweise öffnet und schließt und das zugleich bei geöffnetem Umgehungskanal die Ölnebelabscheidung bewirkt. Der Umgehungskanal samt seines Steuermittels ist also so ausgebildet, daß auch im Umgehungskanal infolge von Strömungsumlenkung und Prallabscheidung bzw. infolge von Impaktion eine Ölabscheidung im Umgehungskanal bewirkt wird. In Bezug auf das Abscheideverhalten der gesamten Vorrichtung (Ölnebelabscheider plus steuerbarer Umgehungskanal) wird somit sichergestelt, daß der Abscheidegrad auch bei geöffnetem Bypass noch ausreichend hoch ist Zur Ableitung des im Umgehungskanal abgeschiedenen Öls ist der Umgehungskanal, z.B. über einen Ölauslaß mit dem Ölsumpf verbunden.The device according to the invention uses a controllable with respect to its flow bypass channel vision, which is arranged as a bypass paralell to Ölnebelabscheider in the crankcase ventilation path for this purpose, the bypass channel directly or indirectly with the crankcase (1st pressure area) connected gas inlet and a direct or indirectly connected to the air intake tract (2nd pressure area) connected gas outlet. To control the Gasdruchströmung a means is provided according to the invention, depending on the differential pressure (Δp = p 1 -p 2 ) between the two pressure ranges the bypass channel for the flow of crankcase ventilation gas continuously or gradually opens and closes and at the same time with open bypass channel Oil mist deposition causes. The bypass channel together with its control means is thus designed so that an oil separation in the bypass channel is also effected in the bypass channel due to flow deflection and impact separation or as a result of impaction. With regard to the separation behavior of the entire device (oil mist separator plus controllable bypass channel) is thus ensured that the degree of separation is still sufficiently high, even when the bypass is open to divert the separated oil in the bypass channel of the bypass channel, for example via an oil outlet connected to the oil sump.

Überschreitet der Differenzdruck am Ölnebelabscheider einen vorbestimmten Wert, so gibt das Mittel den Umgehungskanal für eine Durchströmung von Kurbelgehäuse-Entlüftungsgas frei, so daß ein Teilvolumenstrom des Kurbelgehäuse-Entlüftungsgases an dem Ölnebelabscheider vorbei durch den Umgehungskanal in den 2. Druckbereich (Luftansaugtrakt) strömt. Auf diese Weise können eine schädliche Druckerhöhung im Kurbelgehäuse und eine unzureichende Ölnebelabscheidung vermieden werden.Exceeds the differential pressure at the oil mist separator a predetermined value, so there the means the bypass passage for a flow of crankcase ventilation gas free, so that a partial flow of the crankcase ventilation gas to the oil mist separator passing through the bypass channel in the 2nd pressure area (air intake) flows. In this way, a harmful pressure increase in the crankcase and an insufficient Oil mist separation can be avoided.

In der Praxis wird der Ölnebelabscheider so ausgelegt, daß er für einen bestimmten Volumenstrom einen bestimmten Abscheidegrad aufweist, womit dann auch ein bestimmter Differenzdruckabfall impliziert ist. Dabei wird bei der Festlegung des Arbeitspunktes darauf geachtet, daß der Differenzdruck plus ggf. eines gewissen Toleranzbereiches unterhalb einer für den Kurbelgehäusedruck kritischen Grenze liegt.In practice, the oil mist separator is designed to operate for a given volume flow has a certain degree of separation, which then also a certain differential pressure drop is implied. Care is taken in determining the operating point, that the differential pressure plus possibly a certain tolerance range below a is critical for crankcase pressure.

Werden die Volumenströme des Blow-By-Gases im Laufe der Zeit bei an sich gleichen Betriebsbedingungen (Lastzustand, Drehzahl) der Brennkraftmaschine infolge von Verschleiß dauerhaft höher, so würde dies bei einem Zyklon-Ölnebelabscheider einen drastischen Differenzdruckanstieg bewirken, der wiederum eine schädliche Druckerhöhung im Kurbelgehäuse zur Folge hätte. Diesem Differenzdruckanstieg wird nun mit dem steuerbaren Bypass entgegengewirkt. Dabei ist das Mittel zum Öffnen und Schließen des Umgehungkanals so ausgelegt, daß der Öffnungsdruck gleich einem für das Kurbelgehäuse kritischen Differenzdruck ggf. plus einem Toleranzaufschlag ist.Be the volume flows of the blow-by gas over time with the same operating conditions (Load state, rotational speed) of the internal combustion engine due to wear permanently higher, this would be a drastic differential pressure increase in a cyclone oil mist separator cause, in turn, a harmful pressure increase in the crankcase would result. This differential pressure increase is now counteracted with the controllable bypass. In this case, the means for opening and closing the bypass channel is designed so that that the opening pressure is equal to a differential pressure critical for the crankcase if necessary plus a tolerance markup.

Der erfindungsgemäß steuerbare Bypass wirkt in gleicher Weise bei einem Gestrick- oder Wickelabscheider, der bei an sich gleichem Volumenstrom infolge von Verschmutzungen im Laufe der Zeit einen wesentlich erhöhten Differenzdruck der Gesamtvorrichtung erzeugen würde. Insbesondere bei einem Gestrick- oder Wickelabscheider ist erfindungsgemäß noch ein Sensor vorgesehen, der detektiert, ob der Umgehungskanal geöffnet ist oder nicht Bei geöffnetem Umgehungskanal (Ventil in der Offenstellung) wird dann ein optisches oder akustisches Warnsignal für den Bediener der Brennkraftmaschine erzeugt Dieses Signal ist dann ein Hinweis darauf, daß er Gestrick- und Wickelabscheider einen bestimmten Verschmutzungsgrad erreicht hat. Der Bediener kann dann entsprechend reagieren und den Gestrick- oder Wickelabscheider austauschen. The inventively controllable bypass acts in the same way in a knitted or Wickelabscheider, which at the same volume flow due to contamination in the Over time, produce a significantly increased differential pressure of the overall device would. In particular, in a knitting or Wickelabscheider is still according to the invention a sensor is provided which detects whether the bypass channel is open or not opened bypass channel (valve in the open position) is then an optical or acoustic Warning signal for the operator of the internal combustion engine generated This signal is then an indication that he knitted and Wickelabscheider a certain degree of contamination has reached. The operator can then react accordingly and the Replace knit or wound separator.

Die differenzdruckbegrenzende Wirkung des steuerbaren Umgehungskanals entsteht selbstverständlich nicht nur bei erst nach einer gewissen Zeit eintretenden Differenzdruckerhöhungen infolge von Verschleiß der Brennkraftmaschine oder Verschmutzung des Ölnebelabscheiders, sondern auch bei kurzzeitig auftretenden Differenzdruckerhöhungen.The differential pressure limiting effect of the controllable bypass channel naturally arises not only with differential pressure increases occurring after a certain time due to wear of the internal combustion engine or contamination of the oil mist separator, but also in the case of temporary differential pressure increases.

Anhand der beigefügten Zeichnungen soll die Erfindung nachfolgend näher erläutert werden. Es zeigt

Fig. 1
eine schematsiche Darstellung der Anordnung der erfindungsgemäßen Vorrichtung im Entlüftungsweg, wobei ein Kurbelgehäuse-Unterdruckregelventil vor der erfindungsgemäßen Vorrichtung angeordnet ist,
Fig. 2
eine schematische Darstellung der Anordnung der erfindungsgemäßen Vorrichtung im Entlüftungsweg, wobei das Kurbelgehäuse-Unterdruckregelventil nach der erfingungsgemäßen Vorrichtung angeordnet ist,
Fig. 3
Differenzdruck/Volumenstrom-Kennlinien,
Fig. 4
Ascheidegrad/Volumenstrom-Kennlinien,
Fig. 5
einen Schnitt durch eine erfindungsgemäße Vorrichtung,
Fig. 6
eine vergrößerte Darstellung des Umgehungskanals im Bereich des Ventilkörpers zur Verdeutlichung der Prallabscheidung infolge von Strömungsumlenkung.
Reference to the accompanying drawings, the invention will be explained in more detail below. It shows
Fig. 1
a schematic representation of the arrangement of the device according to the invention in the vent path, wherein a crankcase vacuum control valve is arranged in front of the device according to the invention,
Fig. 2
a schematic representation of the arrangement of the device according to the invention in the vent path, wherein the crankcase vacuum control valve is arranged according to the erfingungsgemäßen device,
Fig. 3
Differential pressure / flow characteristics,
Fig. 4
Ascheidegrad / flow characteristics,
Fig. 5
a section through a device according to the invention,
Fig. 6
an enlarged view of the bypass passage in the region of the valve body to illustrate the impact separation due to flow deflection.

Figur 1 zeigt eine schematische Anordnung der erfinungsgemäßen Vorrichtung (1) im Entlüftungsweg. Die Vorrichtung (1) bestehend aus Ölnebelabscheider (2) und steuerbarem Umgehungskanal (3) ist zwischen dem zu entlüftenden Kurbelgehäuse (5) und dem Luftansaugtrakt (6) angeordnet Der im Luftansaugtrakt (6) herrschende Unterdruck kann in bestimmten Betriebszuständen der Brennkraftmaschine stark ansteigen. Zur Vermeidung eines zu großen Unterdrucks ist im Entlüftungsweg ein sogenanntes Kurbelgehäuse-Unterdruckregelventil (9) vorgesehen, das hier vor der Entölungsvorrichtung (1) angeordnet ist Die Gaseinlässe (2A,3A) des Ölnebelabscheiders (2) sowie des Umgehungskanals (3) sind also daher über das Kurbelgehäuse-Unterdruckregelventil (9) indirekt mit dem Druckbereich des Kurbelgehäuses (5) verbunden. Der gaseinlaßseitige Druck ist als 1. Druckbereich gekennzeichnet Die Gasauslässe (2B,3B) des Ölnebelabscheiders (2) und des Umgehungskanals (3) sind hier direkt mit dem als 2. Druckbereich gekennzeichneten Luftansaugtrakt (6) verbunden.FIG. 1 shows a schematic arrangement of the device (1) according to the invention in the venting path. The device (1) consisting of oil mist separator (2) and controllable Bypass passage (3) is between the crankcase (5) to be vented and the air intake tract (6) arranged in the air intake tract (6) prevailing vacuum can in certain Operating conditions of the internal combustion engine increase sharply. To avoid a To large negative pressure is in the vent path a so-called crankcase vacuum control valve (9), which is arranged here before the oil removal device (1) Die Gas inlets (2A, 3A) of the oil mist separator (2) and the bypass channel (3) are so Therefore, indirectly via the crankcase vacuum control valve (9) with the pressure range of Crankcase (5) connected. The gas inlet side pressure is marked as 1st pressure range The gas outlets (2B, 3B) of the oil mist separator (2) and the bypass duct (3) are here connected directly to the air intake tract (6) marked as the second pressure range.

In Figur 2 ist das Kurbelgehäuse-Unterdruckregelventil (9) hinter der Entölungsvorrichtung (1) angeordnet.In Figure 2, the crankcase vacuum control valve (9) behind the deoiling (1) arranged.

In Figur 3 sind zwei Differenzdruck/Volumenstrom-Kennlinien für eine Zyklon-Abscheidevorrichtung dargestellt. Die durchgezogene Linie bezieht sich auf einen Zyklon ohne den steuerbaren Umgehungskanal. Die gestrichelte Linie auf eine Ausführung der erfindungsgemäßen Vorrichtung bestehend aus Zyklon und steuerbarem Umgehungskanal. Wie man erkennen kann, steigt der Differenzdruck bei einem Zyklon-Ölnebelabscheider mit steigendem Volumenstrom drastisch an. Insbesondere bei Verschleiß der Brennkraftmaschine können die Volumenströme dauerhaft so groß sein, daß der damit verbundene Differenzdruckanstieg unvertretbar ist Diesem Druckanstieg wirkt die erfindungsgemäße Vorrichtung entgegen. Wie man aus dem Diagramm ersehen kann, öffnet bei einem bestimmten Volumenstrom, der einen kritischen Druckabfall am Zyklon bewirkt, automatisch der Umgehungskanal, so daß der weitere Anstieg des Differenzdrucks bei zunehmendem Volumenstrom wesentlich flacher verläuft.FIG. 3 shows two differential pressure / volume flow characteristics for a cyclone separation device shown. The solid line refers to a cyclone without the controllable one Bypass channel. The dashed line on an embodiment of the invention Device consisting of cyclone and controllable bypass channel. How to recognize can, increases the differential pressure in a cyclone oil mist separator with increasing flow drastically. In particular, at wear of the internal combustion engine, the Volume flows permanently be so great that the associated differential pressure increase is indefensible This pressure increase counteracts the inventive device. As you can see from the diagram, opens at a certain flow, the a critical pressure drop across the cyclone automatically causes the bypass channel, so that the further increase of the differential pressure with increasing volume flow much flatter runs.

In Figur 4 sind zwei Abscheidegrad/Volumenstrom-Kennlinien für eine Zyklon-Abscheidevorrichtung dargestellt. Die durchgezogene Linie bezieht sich auf einen Zyklon ohne den steuerbaren Umgehungskanal, die gestrichelte Linie auf eine Ausführung der erfindungsgemäßen Vorrichtung bestehend aus Zyklon und steuerbarem Umgehungskanal. Wie man erkennen kann, hat man auch bei geöffnetem Umgehungskanal noch einen guten Abscheidegrad - auch wenn dieser geringer ist als bei einem Zyklon-Ölnebelabscheider ohne Umgehungskanal.In Figure 4 are two degrees of separation / volume flow characteristics for a cyclone separator shown. The solid line refers to a cyclone without the controllable one By-pass, the dashed line on an embodiment of the invention Device consisting of cyclone and controllable bypass channel. How to recognize can, even if the bypass channel is still open, have a good separation efficiency - even if this is lower than in a cyclone oil mist separator without bypass channel.

Der relativ gute Abscheidegrad auch bei geöffnetem Umgehungskanal ist auf die besondere Ausgestaltung des Umgehungskanals samt seines Steuermittels zurückzuführen. Diese sind nämlich so ausgebildet, daß infolge von Strömungsumlenkung und Prallabscheidung bzw infolge von Impaktion eine Entölung bewirkt wird. Figur 6 zeigt eine vergrößerte Darstellung des Umgehungkanals im Bereich des Ventilkörpers zur Verdeutlichung der Ölnebelabscheidung entsprechend dem Impaktionsprinzip. Dabei wirkt der federbeaufschlagte Ventilkörper als Prallscheibe eines sich dynamisch anpassenden Impaktors, dessen Strömungsspalt (S) über die Ventilfeder differenzdruckabhängig einstellbar ist. The relatively good degree of separation even with open bypass is special Design of the bypass channel, including its tax revenue due. These are namely designed so that due to flow deflection and impact separation or as a result of impaction a de-oiling is effected. Figure 6 shows an enlarged view the bypass channel in the region of the valve body to illustrate the oil mist separation according to the impaction principle. In this case, the spring-loaded valve body acts as a baffle plate of a dynamically adapting impactor whose flow gap (S) is adjustable via the valve spring differential pressure dependent.

Die erfindungsgemäße Vorrichtung weist somit im Auslegungspunkt des Ölnebelabscheiders einen hohen Abscheidegrad auf, während bei hohen Volumenströmen ein Überdruck im Kurbelgehäuse sicher vermieden wird, wobei auch dann noch ein hinreichend hoher Abscheidegrad bewirkt wird.The device according to the invention thus has the design point of the oil mist separator a high degree of separation, while at high flow rates overpressure in Crankcase is reliably avoided, whereby even then a sufficiently high degree of separation is effected.

Figur 5 zeigt einen Schnitt durch eine Ausführungsform der Erfindung. Dort ist der Ölnebelabscheider als Zyklon (2) ausgebildet, an dem einstückig der Umgehungskanal (3) angeordnet ist Vorzugsweise sind Zyklon (2) und Umgehungskanal (3) einstückig im Spritzgießverfahren ausgebildet, wodurch sich die erfindungsgemäße Vorrichtung kostengünstig herstellen läßt. Vorzugsweise sind der ölnebelabscheider (2) und der Umgehungskanal (3), die hier als integrale Baueinheit ausgebildet sind, in einem Aufnahmegehäuse (7) untergebracht, das hier nur angedeutet ist. Das Aufnahmegehäuse (7) ist mit dem 1. Druckbereich verbunden, so daß die Gaseinlässe (2A,3A) von Zyklon (2) und Umgehungskanal (3) im Inneren des Aufnahmeraums (7) mit dem Druck p1 beaufschlagt werden. Die Gasauslässe (2B,3B) von Zyklon (2) und Umgehungskanal (3) sind gegenüber dem Druckbereich im Inneren des Aufnahmegehäuses (7) abgedichtet aus diesem heraus in den 2. Druckbereich (zum Luftansaugtrakt) geführt. Vorzugsweise münden die Gasauslässe (2B,3B) von Zyklon (2) und Umgehungskanal (3) in einem abgedichteten Zwischenraum (8), der mit dem 2. Druckbereich verbunden ist. Durch die integrale Baueinheit (Zyklon + Umgehungskanal) und dem Einbau in ein druckdichtes Aufnahmegehäuse (7) kann auf separate, ansonsten doppelt ausgeführt Anschlußleitungen vom Kurbelgehäuse zu den Gaseinlässen von den Gasauslässen zum Luftansaugtrakt verzichtet werden.FIG. 5 shows a section through an embodiment of the invention. There, the oil mist separator as a cyclone (2) is formed on the integrally the bypass channel (3) is arranged Preferably cyclone (2) and bypass channel (3) are integrally formed by injection molding, whereby the device according to the invention can be produced inexpensively. Preferably, the oil mist separator (2) and the bypass channel (3), which are formed here as an integral unit, housed in a receiving housing (7), which is only hinted at here. The receiving housing (7) is connected to the first pressure range, so that the gas inlets (2A, 3A) of cyclone (2) and bypass channel (3) in the interior of the receiving space (7) with the pressure p 1 are applied. The gas outlets (2B, 3B) of cyclone (2) and bypass channel (3) are compared with the pressure area inside the receiving housing (7) sealed out of this out in the second pressure range (to the air intake) out. Preferably, the gas outlets (2B, 3B) of the cyclone (2) and bypass channel (3) open into a sealed space (8) connected to the second pressure zone. Due to the integral assembly (cyclone + bypass channel) and the installation in a pressure-tight receiving housing (7) can be dispensed with separate, otherwise doubled connecting lines from the crankcase to the gas inlets from the gas outlets to the air intake.

Als Mittel (4) zum differenzdruckabhängigen Öffnen und Schließen ist im Umgehungskanal (3) ein von einer Druckfeder (4C) beaufschlagter Ventilkörper (4A) - hier eine Ventilplatte - angeordnet. Unterhalb einer vorbestimmten Öffnungsdruckdifferenz wird der Ventilkörper (4A) von der Druckfeder (4C) gegen einen im Umgehungskanal (3) angeordneten Ventilsitz (4B) in eine Schließstellung gedrückt. Oberhalb der vorbestimmten Öffnungsdruckdifferenz wird der Ventilkörper (4A) gegen die Druckfeder (4C)unter Freigabe eines Strömungsspaltes (S) vom Ventilsitz (4B) angehoben. Die Öffnungsdruckdifferenz ergibt sich aus der Federkonstanten und der angeströmten Fläche des Ventilkörpers (4A). Um Fertigungstoleranzen der Druckfeder (4C) auszugleichen, ist es vorgesehen, die Druckfeder (4C) mit einer gezielten, auf die Öffnungsdruckdifferenz abgestimmten Vorspannung im Umgehungskanal (3) einzubauen. Für diesen Zweck ist die Einbaulänge der Druckfeder (4C) im differenzdrucklosen Zustand einstellbar. Dies kann bspw. dadurch geschehen (nicht dargestellt), daß die Druckfeder (4C) sich an ihrem dem Ventilkörper (4A) abgewandten Ende auf einem Stützelement (4D) im Umgehungskanal (3) abstützt, dessen axialer Abstand zum Ventilsitz (4B) einstellbar ist.As a means (4) for differential pressure-dependent opening and closing is in the bypass channel (3) one of a compression spring (4C) acted upon valve body (4A) - here a valve plate - arranged. Below a predetermined opening pressure difference, the valve body (4A) of the compression spring (4C) against a valve seat arranged in the bypass channel (3) (4B) pressed into a closed position. Above the predetermined opening pressure difference the valve body (4A) against the compression spring (4C), releasing a flow gap (S) raised from the valve seat (4B). The opening pressure difference results from the spring constant and the flowed surface of the valve body (4A). To manufacturing tolerances To compensate for the compression spring (4C), it is provided, the compression spring (4C) with a targeted, Bias matched to the opening pressure difference in the bypass channel (3) install. For this purpose, the installation length of the compression spring (4C) in the differential pressure State adjustable. This can be done, for example, by (not shown) that the Compression spring (4C) at its end facing away from the valve body (4A) on a support element (4D) is supported in the bypass channel (3) whose axial distance from the valve seat (4B) is adjustable.

Anstatt eines Ventilkörpers mit Druckfeder kann auch ein Ventilkörper verwendet werden, der von der Schwerkraft unterhalb einer bestimmten Öffnungsdruckdifferenz gegen den Ventilsitz in eine Schließstellung gedrückt wird, wobei oberhalb der Öffnungsdruckdifferenz der Ventilkörper vom Ventilsitz unter Freigabe des Strömungsspaltes angehoben wird.Instead of a valve body with compression spring and a valve body can be used, that of gravity below a certain opening pressure difference against the valve seat is pressed in a closed position, wherein above the opening pressure difference of Valve body is lifted from the valve seat with release of the flow gap.

Um den Strömungsspalt (S) auf ein maiximal zulässiges Maß zu begrenzen, kann ein Hubbegrenzugnsanschlag (nicht dargestellt) vorgesehen sein.To limit the flow gap (S) to a maximum permissible extent, a Hubbegrenzugnsanschlag (not shown) may be provided.

Darüber hinaus sind als alternative Mittel zum Öffnen und Schließen des Umgehungskanals eine im Umgehungskanal schwenkbar angeordnete Drosselklappe oder ein eine Öffnung unter Vorspannung verschließendes Blattventil einsetzbar (beide Ausführungsformen sind nicht dargestellt), die ebenfalls eine Entölung durch Impaktion bewirken.In addition, as an alternative means for opening and closing the bypass channel a throttle valve arranged in the bypass channel or an opening can be used under bias closing leaf valve (both embodiments are not shown), which also cause a de-oiling by impaction.

Geodätisch unterhalb der in Figur 5 dargestellten Vorrichtung (1) befindet sich der Ölsumpf, wobei das vom Zyklon (2) abgeschiedene Öl über ein am Ölauslaß (2C) angeordnetes Ablaßventil (2D) in den Ölsumpf gelangt. Das vom Umgehungskanal (3) abgeschiedene-Öl kann über den Gaseinlaß (3A) wider austreten und direkt oder über ein Zwischenreservoir (nicht dargestellt) in den Ölsumpf zurückfließen bzw. -tropfen.Geodetic below the device (1) shown in Figure 5 is the oil sump, wherein the oil separated from the cyclone (2) via a drain valve disposed on the oil outlet (2C) (2D) gets into the oil sump. The oil separated from the bypass channel (3) can escape via the gas inlet (3A) and directly or via an intermediate reservoir (not shown) flow back into the oil sump or -drop.

Claims (20)

  1. Device to deoil the crankcase ventilation gases of an internal combustion engine with at least one oil mist separator (2), which has:
    a gas inlet (2A) that is connected to a 1st pressure area (p1) and can directly or indirectly be connected to the crankcase (5);
    a gas outlet (2B) that is connected to a 2nd pressure area (p2) and can directly or indirectly be connected to the air intake section (6); and
    an oil outlet (2C) that can be connected to the oil sump of the internal combustion engine,
    where
    there is a bypass channel (3), which has a gas inlet (3A) that is connected to the 1st pressure area and a gas outlet (3B) that is connected to the 2nd pressure area;
    there is at least one device (4) which, depending on the pressure difference (Δp ≈ p1 - p2) between the two pressure areas, opens or closes the bypass channel (3) continuous or gradually to allow the crankcase ventilation gases to flow through;
    when the bypass channel (3) is open, a partial volumetric flow of the crankcase ventilation gas flows past the oil mist separator through the bypass channel (3) into the 2nd pressure area,
    characterised in that
    the bypass channel (3) and the device (4) to open and close the bypass channel (3) are designed so that, when the bypass channel (3) is opened, deoiling is brought about by flow diversion and impact separation in the bypass channel.
  2. Device according to claim 1, characterised in that the device (4) to open and close the bypass channel (3) is a valve body (4A) charged by a pressure spring (4C), which, below a pre-specified opening pressure difference, is pressed into a closed position by the pressure spring (4C) against a valve seat (4B), which is located in the bypass channel, wherein above the pre-specified opening pressure difference the valve body (4A) is raised from the valve seat (4B) against the pressure spring (4C), thus releasing a flow gap (S).
  3. Device according to claim 2, characterised in that the overall length of the pressure spring (4C) can be adjusted in the differential pressure-less state.
  4. Device according to claim 3, characterised in that the end of the pressure spring (4C) that is turned away from the valve body (4A) is supported on a support element (4D) in the bypass channel (3), wherein the axial distance of the support element (4D) from the valve seat can be adjusted.
  5. Device according to claim 1, characterised in that the device (4) to open and close the bypass channel (3) is a valve body which, below a pre-specified opening pressure difference, is pressed into a closed position by gravity against the valve seat (4B) located in the bypass channel (3), wherein above the pre-specified opening pressure difference, the valve body (4A) is raised from the valve seat (4B), thus releasing a flow gap (S).
  6. Device according to claims 2 to 5 above, characterised in that there is a lift limiter stop, which determines the maximum amount by which the valve body (4A) can be raised from the valve seat (4B).
  7. Device according to claim 1, characterised in that the device (4) to open and close the bypass channel (3) is formed by a hinged throttle valve in the bypass channel (3).
  8. Device according to claim 1, characterised in that the device (4) to open and close the bypass channel (3) is formed by a leaf valve.
  9. Device according to one of the above claims, characterised in that the oil mist separator (2) is in the form of a cyclone.
  10. Device according to one of the above claims 1 to 8, characterised in that the oil mist separator (2) is a coalescence separator in the form of a knitted or wrap-around separator.
  11. Device according to one of the above claims, characterised in that the bypass channel (3) is an integral component of the oil mist separator (2).
  12. Device according to claims 9 and 11, characterised in that the bypass channel (3) and the cyclone (2) are made in one piece from synthetic material.
  13. Device according to claim 11 or 12, characterised in that the oil mist separator (2) and the bypass channel (3) are located, together with their respective gas inlets (2A, 3A), in a common reception case (7), which is connected to the 1st pressure area, wherein the gas outlets (2B, 3B) of the oil mist separator (2) and of the bypass channel (3) are sealed against the pressure area inside the reception case, out of which they are led into the 2nd pressure area.
  14. Device according to claim 13, characterised in that the gas outlets (2B, 3B) of the oil mist separator (2) and of the bypass channel (3) are led into a sealed intermediate space (8), which is connected to the 2nd pressure area.
  15. Device according to claim 12, characterised in that the gas outlets (2B, 3B) of the oil mist separator (2) and of the bypass channel (3) are led separately out of the reception case (7) into the 2nd pressure area.
  16. Device according to one of the above claims, characterised in that a wall of the bypass channel (3) surrounds the device (4) for it to open and close, with keeping clear a gap (3C).
  17. Device according to claim 16, characterised in that the feed through cross section of the gap (3C) is maximally as big as the feed through cross section of the device (4).
  18. Device according to one of the above claims, characterised in that the bypass channel (3) is directly or indirectly connected to the oil sump via an oil outlet.
  19. Device according to one of the above claims, characterised in that there is a sensor, which detects whether the bypass channel (3) is open, and which generates an optical or acoustical warning signal when the bypass channel (3) is open.
  20. Device according to one of the above claims, characterised in that the cross sectional surface of the bypass channel (3) in front of the device (4) is 1/3 to 1/8 of the flow face (4E) of the device (4).
EP01951537A 2000-05-30 2001-05-30 Device for deoiling crankcase ventilation gases in an internal combustion engine Expired - Lifetime EP1285152B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20009605U 2000-05-30
DE20009605U DE20009605U1 (en) 2000-05-30 2000-05-30 Device for deoiling crankcase ventilation gases of an internal combustion engine
PCT/EP2001/006159 WO2001092690A1 (en) 2000-05-30 2001-05-30 Device for deoiling crankcase ventilation gases in an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1285152A1 EP1285152A1 (en) 2003-02-26
EP1285152B1 true EP1285152B1 (en) 2004-02-25

Family

ID=7942153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01951537A Expired - Lifetime EP1285152B1 (en) 2000-05-30 2001-05-30 Device for deoiling crankcase ventilation gases in an internal combustion engine

Country Status (8)

Country Link
US (1) US6505615B2 (en)
EP (1) EP1285152B1 (en)
JP (1) JP4928707B2 (en)
KR (1) KR100531697B1 (en)
BR (1) BR0106708B1 (en)
DE (2) DE20009605U1 (en)
ES (1) ES2214433T3 (en)
WO (1) WO2001092690A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005108835A1 (en) 2004-05-05 2005-11-17 Hengst Gmbh & Co. Kg Valve arrangement mounted in a crankcase ventilator
DE202005009990U1 (en) * 2005-06-25 2006-11-02 Hengst Gmbh & Co.Kg Device for separating oil particles from the crankcase ventilation gas of an internal combustion engine
DE102010029322A1 (en) 2010-05-26 2011-12-01 Hengst Gmbh & Co. Kg Pressure limiting valve of a device for venting the crankcase of an internal combustion engine and device with such a pressure relief valve
DE102011100239A1 (en) 2011-05-02 2012-11-08 Mann + Hummel Gmbh Bypass device for crank case venting system of internal combustion engine for motor car, has oil separation device whose coalescence element is provided between gas inlet and valve inlet of bypass valve in flow-technical manner
DE102016100419A1 (en) 2016-01-12 2017-07-13 BRUSS Sealing Systems GmbH Oil separation device for the crankcase ventilation of an internal combustion engine
WO2017174706A1 (en) * 2016-04-06 2017-10-12 Reinz-Dichtungs-Gmbh Device for depositing oil droplets and/or oil mist
DE102018211760A1 (en) 2018-07-13 2020-01-16 BRUSS Sealing Systems GmbH Oil separator for the crankcase ventilation of an internal combustion engine
DE102019217901A1 (en) * 2019-11-20 2021-05-20 BRUSS Sealing Systems GmbH Oil separator
DE102021200448A1 (en) 2021-01-19 2022-07-21 BRUSS Sealing Systems GmbH Oil separator for crankcase ventilation of an internal combustion engine

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070871A2 (en) * 2001-03-07 2002-09-12 Hengst Gmbh & Co. Kg Device for the ventilation of the crankcase of an internal combustion engine
DE20118388U1 (en) 2001-11-13 2003-03-27 Hengst Gmbh & Co Kg Device for the crankcase ventilation 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
DE10251677A1 (en) * 2002-11-07 2004-05-19 Mann + Hummel Gmbh cyclone
ITRE20030035A1 (en) * 2003-04-09 2004-10-10 Ufi Filters Spa "SEPARATOR OF DIFFERENT DENSITY FLUIDS"
DE10325055A1 (en) * 2003-06-02 2004-12-23 Mann + Hummel Gmbh Device for switching cyclones
US6925994B2 (en) * 2003-06-03 2005-08-09 Richard G. Michel Regulated engine crankcase gas filter
DE20319197U1 (en) * 2003-12-11 2005-05-04 Hengst Gmbh & Co.Kg Centrifugal separator for cleaning crankcase ventilation gas in internal combustion engine, has cyclone chamber whose volume adapts to volume flow of gas
EP1624162A1 (en) * 2004-08-04 2006-02-08 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Method for venting the crankcase of an internal combustion engine and internal combustion engine for performing this method
US7614390B2 (en) * 2007-08-23 2009-11-10 Cummins Filtration Ip Inc. Two stage drainage gas-liquid separator
US7896946B1 (en) 2004-09-21 2011-03-01 Cummins Filtration Ip, Inc. Multistage multicontroller variable impactor
US7964009B2 (en) * 2004-09-21 2011-06-21 Cummins Filtration Ip, Inc. Inertial gas-liquid separator with axially variable orifice area
US7648543B2 (en) * 2004-09-21 2010-01-19 Cummins Filtration Ip Inc. Multistage variable impactor
US7406960B2 (en) * 2004-12-10 2008-08-05 Fleetguard, Inc. Oil mist removal device with oil fill
US7473291B2 (en) * 2004-09-21 2009-01-06 Cummins Filtration Ip, Inc. Inertial gas-liquid separator with variable flow actuator
US7828865B2 (en) 2008-07-31 2010-11-09 Cummins Filtration Ip, Inc. Gas-liquid separator with dual flow impaction and coalescence
US7238216B2 (en) * 2004-09-21 2007-07-03 Cummins Filtration Ip, Inc. Variable flow inertial gas-liquid impactor separator
US8048212B2 (en) * 2004-09-21 2011-11-01 Cummins Filtration Ip, Inc. Inertial gas-liquid separator with valve and variable flow actuator
US8075654B2 (en) * 2004-09-21 2011-12-13 Cummins Filtration Ip, Inc. Gas-liquid separator with expansion transition flow
US7159386B2 (en) * 2004-09-29 2007-01-09 Caterpillar Inc Crankcase ventilation system
SE527877C2 (en) * 2004-11-29 2006-07-04 Alfa Laval Corp Ab Device for purification of crankcase gases
DE102005042286A1 (en) * 2005-09-06 2007-04-12 Mahle International Gmbh Device for separating a gas-liquid mixture
US7959714B2 (en) 2007-11-15 2011-06-14 Cummins Filtration Ip, Inc. Authorized filter servicing and replacement
US7828869B1 (en) 2005-09-20 2010-11-09 Cummins Filtration Ip, Inc. Space-effective filter element
US7582130B2 (en) * 2006-04-14 2009-09-01 Cummins Filtration Ip Inc. Coalescing filter assembly
US8171898B2 (en) * 2006-02-02 2012-05-08 Avl List Gmbh Crankcase breathing system
NL1032942C2 (en) * 2006-05-31 2007-12-03 Daf Trucks Nv Internal combustion engine with carter ventilation system, includes pressure limiter with membrane valve
US7678169B1 (en) * 2006-07-12 2010-03-16 Cummins Filtration Ip Inc. Oil fill cap with air/oil separator
DE102006041213B4 (en) * 2006-09-02 2017-06-29 Mahle International Gmbh Device for crank chamber ventilation
DE102006051143B4 (en) * 2006-10-30 2010-01-21 Reinz-Dichtungs-Gmbh Adaptive oil separator
KR100820684B1 (en) * 2006-12-06 2008-04-11 현대자동차주식회사 The blow-by gas which is affixed in the cylinder head cover reduction system
DE102006058072A1 (en) * 2006-12-07 2008-06-19 Mahle International Gmbh crankcase ventilation
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
US7849841B2 (en) * 2007-07-26 2010-12-14 Cummins Filtration Ip, Inc. Crankcase ventilation system with engine driven pumped scavenged oil
US7699029B2 (en) * 2007-07-26 2010-04-20 Cummins Filtration Ip, Inc. Crankcase ventilation system with 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
DE102007062098A1 (en) 2007-12-21 2009-06-25 Mahle International Gmbh Oil Mist Separators
FR2926738B1 (en) * 2008-01-29 2010-04-02 Snecma DEHUILING DEVICE AND TURBOMACHINE COMPRISING SAID DEVICE
US7776139B2 (en) * 2008-02-06 2010-08-17 Cummins Filtration Ip, Inc. Separator with transfer tube drainage
JP4711199B2 (en) * 2008-05-16 2011-06-29 トヨタ自動車株式会社 Oil mist separator for internal combustion engine
US20090293852A1 (en) * 2008-05-21 2009-12-03 Ian James Frick Emission Control System with Vacuum Boost
US8360038B2 (en) * 2008-09-24 2013-01-29 Monros Serge V Pollution control system
AU2009298633B2 (en) * 2008-09-30 2013-07-18 Deltahawk Engines, Inc. Crankcase pressure regulator for an internal combustion engine
KR101028552B1 (en) * 2008-11-18 2011-04-11 기아자동차주식회사 Oil separation apparatus for blow-by gas
US8152884B1 (en) 2009-11-20 2012-04-10 Cummins Filtration Ip Inc. Inertial gas-liquid impactor separator with flow director
DE202010001191U1 (en) 2010-01-20 2011-05-26 REINZ-Dichtungs-GmbH, 89233 Valve for controlling a gas flow, liquid separator, venting system and internal combustion engine with such a valve
DE102010027787A1 (en) * 2010-04-15 2011-10-20 Hengst Gmbh & Co. Kg Oil mist separator for crank case ventilation device of internal-combustion engine, has separator housing, separation element arranged in housing and cover for removable closing of housing
EP2664755B1 (en) * 2011-01-12 2015-11-18 Toyota Jidosha Kabushiki Kaisha Pcv system for internal combustion engine
EP2713025B1 (en) * 2011-05-19 2016-09-07 Toyota Jidosha Kabushiki Kaisha Air intake structure for internal combustion engine
US9238980B2 (en) * 2012-02-16 2016-01-19 Mahle International Gmbh Crankcase ventilation device
DE102012202405A1 (en) * 2012-02-16 2013-08-22 Mahle International Gmbh Motor vehicle e.g. road vehicle, has oil return part reconducting separated oil to crank case of engine, and conveying device driving fluid i.e. air, different from blow-by-gas and used for driving blow-by-gas in crank case device
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
DE102012021309B4 (en) 2012-10-31 2014-08-07 Mann + Hummel Gmbh Crankcase ventilation device
US9138673B2 (en) 2013-03-14 2015-09-22 Baldwin Filters, Inc. Coalescer filter
DE102013102858A1 (en) 2013-03-20 2014-09-25 Thyssenkrupp Presta Teccenter Ag Oil lubricated working machine
JP6092746B2 (en) * 2013-10-01 2017-03-08 株式会社ニフコ Oil separator
CN108452627B (en) * 2018-05-10 2024-02-02 常州市华立液压润滑设备有限公司 Oil mist separation device
FR3096735B1 (en) * 2019-05-29 2021-07-02 Novares France Oil settling system for an internal combustion engine
DE102019003952A1 (en) * 2019-06-04 2020-12-10 Hydac Filtertechnik Gmbh Separation device
KR102321964B1 (en) 2020-04-21 2021-11-04 유성기업 주식회사 Air compressor

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169432A (en) * 1977-03-31 1979-10-02 Ford Motor Company Integrated PCV valve and oil filler cap
JPS61197709A (en) * 1985-02-27 1986-09-02 Honda Motor Co Ltd Engine for vehicle
DE4214324C2 (en) * 1992-04-30 1998-04-30 Knecht Filterwerke Gmbh Device for separating oily aerosols
DE4344506C2 (en) * 1993-12-24 1998-04-16 Knecht Filterwerke Gmbh Cyclone for separating oil
DE4442148A1 (en) * 1994-11-26 1996-05-30 Knecht Filterwerke Gmbh Oil filter
DE59600159D1 (en) * 1995-03-01 1998-05-28 Knecht Filterwerke Gmbh Cyclone separator for the crankcase ventilation of an internal combustion engine with a ventilation valve
DE29508170U1 (en) * 1995-05-17 1995-08-03 Meng Frank Recirculating crankcase ventilation device
US5564401A (en) * 1995-07-21 1996-10-15 Diesel Research Inc. Crankcase emission control system
US5586541A (en) * 1995-08-07 1996-12-24 Tsai; Chun-Tie Auxiliary assembly for improving the combustion efficiency of an engine
IT1285385B1 (en) * 1996-05-31 1998-06-03 Iveco Fiat ENDothermic ENGINE EQUIPPED WITH A DEVICE FOR PURIFICATION OF THE CRANKCASE VENT GAS.
US5669366A (en) * 1996-07-10 1997-09-23 Fleetguard, Inc. Closed crankcase ventilation system
JP3879943B2 (en) * 1996-11-28 2007-02-14 ヤマハマリン株式会社 Outboard motor
US6123061A (en) * 1997-02-25 2000-09-26 Cummins Engine Company, Inc. Crankcase ventilation system
US6247463B1 (en) * 1999-09-01 2001-06-19 Nelson Industries, Inc. Diesel engine crankcase ventilation filter
US6354283B1 (en) * 2000-08-29 2002-03-12 Fleetguard, Inc. Diesel engine modular crankcase ventilation filter

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005108835A1 (en) 2004-05-05 2005-11-17 Hengst Gmbh & Co. Kg Valve arrangement mounted in a crankcase ventilator
DE202005009990U1 (en) * 2005-06-25 2006-11-02 Hengst Gmbh & Co.Kg Device for separating oil particles from the crankcase ventilation gas of an internal combustion engine
WO2007000281A1 (en) 2005-06-25 2007-01-04 Hengst Gmbh & Co. Kg Device for eliminating oil particles from the crankcase ventilation gas in an internal combustion engine
DE102010029322B4 (en) 2010-05-26 2020-06-04 Hengst Se Pressure relief valve of a device for venting the crankcase of an internal combustion engine and device with such a pressure relief valve
DE102010029322A1 (en) 2010-05-26 2011-12-01 Hengst Gmbh & Co. Kg Pressure limiting valve of a device for venting the crankcase of an internal combustion engine and device with such a pressure relief valve
WO2011147880A1 (en) 2010-05-26 2011-12-01 Hengst Gmbh & Co. Kg Pressure control valve of a device for venting the crankcase of an internal combustion engine and device comprising such a pressure control valve
DE102011100239A1 (en) 2011-05-02 2012-11-08 Mann + Hummel Gmbh Bypass device for crank case venting system of internal combustion engine for motor car, has oil separation device whose coalescence element is provided between gas inlet and valve inlet of bypass valve in flow-technical manner
DE102016100419A1 (en) 2016-01-12 2017-07-13 BRUSS Sealing Systems GmbH Oil separation device for the crankcase ventilation of an internal combustion engine
EP3192987A1 (en) 2016-01-12 2017-07-19 BRUSS Sealing Systems GmbH Oil separating device for the crankcase ventilation of a combustion engine
WO2017174706A1 (en) * 2016-04-06 2017-10-12 Reinz-Dichtungs-Gmbh Device for depositing oil droplets and/or oil mist
DE102018211760A1 (en) 2018-07-13 2020-01-16 BRUSS Sealing Systems GmbH Oil separator for the crankcase ventilation of an internal combustion engine
US10830112B2 (en) 2018-07-13 2020-11-10 BRUSS Sealing Systems GmbH Oil separation device for the crankcase ventilation of an internal combustion engine
DE102018211760B4 (en) * 2018-07-13 2021-03-18 BRUSS Sealing Systems GmbH System for crankcase ventilation of an internal combustion engine
DE102019217901A1 (en) * 2019-11-20 2021-05-20 BRUSS Sealing Systems GmbH Oil separator
DE102019217901B4 (en) 2019-11-20 2022-03-31 BRUSS Sealing Systems GmbH oil separator
US11306633B2 (en) 2019-11-20 2022-04-19 BRUSS Sealing Systems GmbH Oil separating device
DE102021200448A1 (en) 2021-01-19 2022-07-21 BRUSS Sealing Systems GmbH Oil separator for crankcase ventilation of an internal combustion engine
DE102021200448B4 (en) 2021-01-19 2022-10-06 BRUSS Sealing Systems GmbH Oil separator for crankcase ventilation of an internal combustion engine

Also Published As

Publication number Publication date
US20020100465A1 (en) 2002-08-01
BR0106708A (en) 2002-05-07
ES2214433T3 (en) 2004-09-16
JP4928707B2 (en) 2012-05-09
BR0106708B1 (en) 2009-05-05
JP2003535252A (en) 2003-11-25
DE20009605U1 (en) 2001-10-18
DE50101557D1 (en) 2004-04-01
US6505615B2 (en) 2003-01-14
KR20020079723A (en) 2002-10-19
KR100531697B1 (en) 2005-11-29
EP1285152A1 (en) 2003-02-26
WO2001092690A1 (en) 2001-12-06

Similar Documents

Publication Publication Date Title
EP1285152B1 (en) Device for deoiling crankcase ventilation gases in an internal combustion engine
EP1924335B1 (en) Device for separating a gas-liquid mixture
EP2220348B1 (en) Oil mist separator
DE102008005409B4 (en) Valve for the crankcase ventilation of an internal combustion engine
EP1090210B2 (en) Method for removing oil from crankcase ventilation gases and devices for implementing said method
EP2526267B1 (en) Valve for controlling a gas flow, liquid separator, ventilation system and internal combustion engine comprising such a valve
EP1444423A1 (en) Device for crankcase ventilation of an internal combustion engine
EP1614871A2 (en) Device for pressure regulation in engine crankcase and for separating oil mist from the gas in the crankcase ventilation system
EP1382809B1 (en) Filter
EP2579958B1 (en) Filter device, in particular liquid filter
DE102012021309B4 (en) Crankcase ventilation device
DE202006009537U1 (en) Crank case exhaust device for internal combustion engine, has negative pressure regulating valve for automatic regulation of pressure in crank case, which is arranged in process of breather tube
EP3033517B1 (en) Filter for liquids, particularly for fuels
EP0922850B1 (en) Fuel supply system
WO2019042824A1 (en) Oil mist separator having pressure limiting valves
DE10147230B4 (en) Ventilation device for a crankcase of an internal combustion engine
EP3250797B1 (en) Internal combustion engine comprising an oil return line having an oil duct
DE102007054486A1 (en) Valve i.e. inlet valve or outlet valve, for use in venting system for single or multi cylinder diesel engine, has valve body compressed during mixing of preset minimum quantity of certain fluid to gaseous medium in locking position
DE10135578A1 (en) control valve
DE112008001318T5 (en) Filter arrangement with valve and filter with projection for engaging in the valve
DE1981033U (en) CONTROL VALVE IN A VENTILATION LINE BETWEEN THE CRANKCASE AND THE INTAKE LINE OF A COMBUSTION ENGINE.
DE20122494U1 (en) Ventilation device for crank housing of internal combustion engine has two pressure regulating valves connected in series with second valve set to working underpressure between maximum

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: 20020118

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 TR

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040225

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: 50101557

Country of ref document: DE

Date of ref document: 20040401

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20040225

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2214433

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20041126

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50101557

Country of ref document: DE

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

Ref country code: DE

Ref legal event code: R082

Ref document number: 50101557

Country of ref document: DE

Representative=s name: SCHULZE HORN - FACHANWALTSKANZLEI FUER GEWERBL, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 50101557

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: 50101557

Country of ref document: DE

Owner name: HENGST SE, DE

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

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50101557

Country of ref document: DE

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

Ref country code: DE

Ref legal event code: R082

Ref document number: 50101557

Country of ref document: DE

Representative=s name: SCHULZE HORN - FACHANWALTSKANZLEI FUER GEWERBL, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50101557

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: 50101557

Country of ref document: DE

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

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

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

Ref country code: ES

Payment date: 20180601

Year of fee payment: 18

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

Ref country code: SE

Payment date: 20180511

Year of fee payment: 18

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: 20190531

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

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

Ref country code: FR

Payment date: 20200512

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20200512

Year of fee payment: 20

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20200930

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

Ref country code: ES

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

Effective date: 20190531

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

Ref country code: DE

Payment date: 20200722

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50101557

Country of ref document: DE