EP1354129A1 - Oil separator - Google Patents

Oil separator

Info

Publication number
EP1354129A1
EP1354129A1 EP02701206A EP02701206A EP1354129A1 EP 1354129 A1 EP1354129 A1 EP 1354129A1 EP 02701206 A EP02701206 A EP 02701206A EP 02701206 A EP02701206 A EP 02701206A EP 1354129 A1 EP1354129 A1 EP 1354129A1
Authority
EP
European Patent Office
Prior art keywords
oil
oil separator
gases
internal combustion
filter disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02701206A
Other languages
German (de)
French (fr)
Other versions
EP1354129B1 (en
EP1354129B8 (en
Inventor
Erhard Keller
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.)
Senertec
Original Assignee
Senertec
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 Senertec filed Critical Senertec
Publication of EP1354129A1 publication Critical patent/EP1354129A1/en
Publication of EP1354129B1 publication Critical patent/EP1354129B1/en
Application granted granted Critical
Publication of EP1354129B8 publication Critical patent/EP1354129B8/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0438—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a filter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/19—Crankcase ventilation

Definitions

  • the invention relates to a rotary oil separator for cleaning crankcase ventilation gases of an internal combustion engine.
  • crankcase ventilation gas In all internal combustion engines, oil droplets and oil aerosols are part of the blow-by gases from the crankcase ventilation. When these oil-containing gases are introduced into the intake area of the engine, contamination occurs in the subsequent components, which adversely affect the function of the engine components. The entrained oil must therefore be removed from the crankcase ventilation gas.
  • Oil is usually separated from the crankcase gases with the help of separators made from a knitted fabric or with the aid of beam deflections on baffle plates or a combination of these processes.
  • separators made from a knitted fabric or with the aid of beam deflections on baffle plates or a combination of these processes.
  • ultra-fine filters are used, but they work with a high differential pressure.
  • Cyclone separators require a relatively large installation space and, due to their principle, only work optimally at one operating point.
  • Electrostatic filters require additional electrical power consumption and are relatively expensive intensive. In addition, these filters cannot be used with flammable gases.
  • Rotary oil separators in which the oil droplets are ejected with the help of paddle wheels, are also known. They are usually driven by electric motors, air pressure turbines or oil pressure turbines.
  • the invention has for its object to provide an oil separator that ensures almost complete oil separation from the crankcase ventilation gases under all occurring operating conditions and at low differential pressure and can be produced inexpensively.
  • a filter disk is attached to a shaft located in the crankcase in such a way that the crankcase gases have to pass through this filter disk.
  • the oil and soot particles separated on the surface and on the way through the filter disk are thrown off by the rotating disk and remain in the crankcase, so that no oil collecting space and no special oil return are required.
  • the self-cleaning power of the rotating filter disc is so great that the differential pressure of the filter does not change significantly even with long running times.
  • An oil separator provided for use in crankcase ventilation systems of an internal combustion engine with a throughflow of air is particularly cost-effective provided for cleaning gases filter disc when the filter disc is attached according to claim 7 on a camshaft, balance shaft or crankshaft of the internal combustion engine.
  • the oil separator according to the invention does not require any complex drive, since at least one of the shafts mentioned is present in internal combustion engines anyway.
  • a particularly advantageous use of a rotating filter disk provided for the flow of the gases to be cleaned consists in separating oil droplets and oil aerosols from gases from a crankcase ventilation of an internal combustion engine.
  • a filter disk can withstand changing load conditions of the internal combustion engine and can permanently clean itself. The separation of oil droplets and oil aerosols from the gases in the crankcase ventilation is therefore almost maintenance-free. Soot particles are also thrown off the filter disc.
  • the invention permits numerous embodiments. To further clarify its basic principle, one of these is shown in the drawing and is described below.
  • this shows a filter disk 1, which is attached to a shaft 2 in the crankcase space 5 of an internal combustion engine, not shown.
  • the direction of flow of the crankcase ventilation gases is indicated by arrows.
  • the housing bushing 3 is sealed in the crankcase wall 4 and touches the filter disk 1 with its end face.
  • the housing bushing 3 is provided with a drip edge 6 so that the oil running off the crankcase wall 4 does not reach the filter disk 1 when the engine is at a standstill.

Landscapes

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

Abstract

The invention relates to an oil separator, in particular for application in a crankcase breather for an internal combustion engine, with a filter disc (1), fitted to a driven shaft (2). Gases from the crankcase pas through the filter disc (1). Oil and soot particles adhering to the filter disc (1) are spun off the turning filter disc (1).

Description

Beschreibung description
Ölabscheideroil separator
Die Erfindung betrifft einen rotatorisch arbeitenden Ölabscheider zur Reinigung von Kurbelgehäuseentlüftungsgasen einer Brennkraftmaschine.The invention relates to a rotary oil separator for cleaning crankcase ventilation gases of an internal combustion engine.
Bei allen Verbrennungsmotoren sind Öltröpfchen und Öl- aerosole Bestandteil der Blow-by-Gase aus der Kurbelgehäuseentlüftung. Bei der Einleitung dieser ölhaltigen Gase in den Ansaugbereich des Motors treten Verschmutzungen in den nachfolgenden Bauteilen auf, die sich nachteilig auf die Funktion der Motorbauteile auswirken. Aus dem Kurbelgehäuseentlüftungsgas muss deshalb das mitgeführte Öl entfernt werden.In all internal combustion engines, oil droplets and oil aerosols are part of the blow-by gases from the crankcase ventilation. When these oil-containing gases are introduced into the intake area of the engine, contamination occurs in the subsequent components, which adversely affect the function of the engine components. The entrained oil must therefore be removed from the crankcase ventilation gas.
Meist erfolgt die Ölabscheidung aus den Kurbelgehäusegasen mit Hilfe von Abscheidern, die aus einem Gewirk von Fasern bestehen oder mit Hilfe von Strahlablenkungen an Prallplatten oder einer Kombination dieser Verfahren. Daneben kommen Feinstfilter zum Einsatz, die jedoch mit einem hohen Differenzdruck arbeiten.Oil is usually separated from the crankcase gases with the help of separators made from a knitted fabric or with the aid of beam deflections on baffle plates or a combination of these processes. In addition, ultra-fine filters are used, but they work with a high differential pressure.
Zyklonabscheider benötigen einen relativ großen Einbauraum und arbeiten prinzipbedingt nur in einem Betriebspunkt optimal.Cyclone separators require a relatively large installation space and, due to their principle, only work optimally at one operating point.
Elekrostatische Filter erfordern eine zusätzliche elektrische Leistungsaufnahme und sind relativ kosteninten- siv. Zudem können diese Filter bei brennbaren Gasen nicht eingesetzt werden. Rotatorisch arbeitende Ölabscheider, in denen die Öltröpfchen mit Hilfe von Schaufelrädern ausgeschleudert werden, sind ebenfalls bekannt. Sie werden meist mit Elektromotoren, Luftdruckturbinen oder Öldruckturbinen angetrieben.Electrostatic filters require additional electrical power consumption and are relatively expensive intensive. In addition, these filters cannot be used with flammable gases. Rotary oil separators, in which the oil droplets are ejected with the help of paddle wheels, are also known. They are usually driven by electric motors, air pressure turbines or oil pressure turbines.
Die optimale Auslegung der üblicherweise eingesetzten Ölabscheider bereitet erhebliche Probleme, weil der Ölab- scheidegrad und der sich einstellende Differenzdruck vom Ölgehalt, von der Öltemperatur, von der Tröpfchengrößenverteilung, vom Blow-by-Gasstrom, von der pulsierenden Strömung, von der Motordrehzahl und der Motorbelastung, von plötzlichen Drehzahl- und Laständerungen etc. abhängt. Deswegen werden vor den eigentlichen Ölabscheidern noch Beruhigungsräume und Vorabscheider eingesetzt, die zusätzlichen Bauraum benötigen und zusätzliche Kosten verursachen. Weiterer Aufwand entsteht noch durch Ölsam- melbehälter, Rückführventile und Olrückführleitungen zum Ölsumpf des Motors.The optimal design of the commonly used oil separators creates considerable problems because the degree of oil separation and the resulting differential pressure depend on the oil content, the oil temperature, the droplet size distribution, the blow-by gas flow, the pulsating flow, the engine speed and the engine load , depends on sudden changes in speed and load, etc. For this reason, calming rooms and pre-separators are used in front of the actual oil separators, which require additional installation space and cause additional costs. Additional effort arises from the oil collecting tank, return valves and oil return lines to the oil sump of the engine.
Aus der DE 43 30 912 AI ist eine Dunstabscheideeinrichtung bekannt geworden, bei der ein Rotationskörper mit einer Filterfüllung versehen ist. Dunstbildende Teilchen sollen durch Einwirkung der Fliehkraft in Radialrichtung von dem Rotationskörper abgeschleudert werden. Diese Dunstabscheideeinrichtung erfordert jedoch einen Sammelbehälter und Ablenkrippen für die dunstbildenden Teilchen und ist daher nicht für die Reinigung von Blow-by-Gasen geeignet. Weiterhin ist der Rotationskörper zusammen mit einem Antriebsmotor innerhalb eines Gehäuses angeordnet, was zu großen Abmessungen der Dunstabscheideeinrichtung führt .From DE 43 30 912 AI an extractor device has become known in which a rotating body is provided with a filter filling. Haze-forming particles are to be thrown off the rotating body by the action of centrifugal force in the radial direction. However, this vapor separation device requires a collecting container and deflection fins for the vapor-forming particles and is therefore not suitable for cleaning blow-by gases. Furthermore, the rotating body is arranged together with a drive motor within a housing, which leads to large dimensions of the vapor separating device.
Aus der DE 196 37 431 AI ist eine Reinigungsvorrichtung bekannt geworden, bei der eine Luftströmung mit Fest- stoffpartikeln durch eine rotierende Lochscheibe geführt wird. Die Feststof partikel sollen von der Lochscheibe erfasst und radial nach außen geschleudert werden. Diese Reinigungsvorrichtung ist jedoch nicht zur Trennung von flüssigen Stoffen, wie Öltröpfchen oder Ölaerosolen, von Luft geeignet.From DE 196 37 431 AI a cleaning device has become known in which an air flow with fixed is passed through a rotating perforated disc. The solid particles should be caught by the perforated disc and flung radially outwards. However, this cleaning device is not suitable for separating liquid substances, such as oil droplets or oil aerosols, from air.
Der Erfindung liegt die Aufgabe zugrunde, einen Ölabscheider zu schaffen, der unter allen vorkommenden Betriebsbedingungen und bei geringem Differenzdruck eine nahezu vollständige Ölabscheidung aus den Kurbelgehäuseentlüftungsgasen gewährleistet und dabei kostengünstig hergestellt werden kann.The invention has for its object to provide an oil separator that ensures almost complete oil separation from the crankcase ventilation gases under all occurring operating conditions and at low differential pressure and can be produced inexpensively.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved by the features of claim 1.
Hierdurch wird eine Filterscheibe an einer im Kurbelgehäuse befindlichen Welle derart befestigt, dass die Kurbelgehäusegase durch diese Filterscheibe hindurchtreten müssen. Die an der Oberfläche und auf dem Weg durch die Filterscheibe abgeschiedenen Öl- und Rußteilchen werden durch die sich drehende Scheibe abgeschleudert und verbleiben im Kurbelgehäuse, so dass kein Olsammelraum und keine besondere Ölrückführung erforderlich sind. Die Selbstreinigungskraft der sich drehenden Filterscheibe ist so groß, dass sich der Differenzdruck des Filters auch bei langen Laufzeiten nicht wesentlich verändert.As a result, a filter disk is attached to a shaft located in the crankcase in such a way that the crankcase gases have to pass through this filter disk. The oil and soot particles separated on the surface and on the way through the filter disk are thrown off by the rotating disk and remain in the crankcase, so that no oil collecting space and no special oil return are required. The self-cleaning power of the rotating filter disc is so great that the differential pressure of the filter does not change significantly even with long running times.
Weitere Merkmale und Voreile der Erfindung sind Bestandteil der Unteransprüche sowie der Beschreibung eines Ausführungsbeispiels und der zugehörigen Zeichnungsfigur.Further features and advantages of the invention are part of the subclaims and the description of an exemplary embodiment and the associated drawing figure.
Besonders kostengünstig gestaltet sich ein zum Einsatz in Kurbelgehäuseentlüftungen einer Brennkraftmaschine vorgesehener Ölabscheider mit einer zur Durchströmung von den zu reinigenden Gasen vorgesehenen Filterscheibe, wenn die FilterScheibe gemäß Anspruch 7 auf einer Nockenwelle, Ausgleichswelle oder Kurbelwelle der Brennkraftmaschine befestigt ist. Hierdurch erfordert der erfindungsgemäße Ölabscheider keinen aufwändigen Antrieb, da zumindest eine der genannten Wellen in Brennkraftmaschinen ohnehin vorhanden ist.An oil separator provided for use in crankcase ventilation systems of an internal combustion engine with a throughflow of air is particularly cost-effective provided for cleaning gases filter disc when the filter disc is attached according to claim 7 on a camshaft, balance shaft or crankshaft of the internal combustion engine. As a result, the oil separator according to the invention does not require any complex drive, since at least one of the shafts mentioned is present in internal combustion engines anyway.
Eine besonders vorteilhafte Verwendung einer rotierenden, zur Durchströmung von den zu reinigenden Gasen vorgesehenen Filterscheibe besteht im Abscheiden von Öltröpfchen und Ölaerosolen aus Gasen einer Kurbelgehäuseentlüftung einer Brennkraftmaschine. Eine solche Filterscheibe vermag wechselnden Lastbedinungen der Brennkraftmaschine standzuhalten und sich dauerhaft selbst zu reinigen. Daher ist die Abscheidung der Öltröpfchen und Ölaerosolen aus den Gasen der Kurbelgehäuseentlüftung nahezu wartungsfrei. Rußteilchen werden von der Filterscheibe ebenfalls abgeschleudert.A particularly advantageous use of a rotating filter disk provided for the flow of the gases to be cleaned consists in separating oil droplets and oil aerosols from gases from a crankcase ventilation of an internal combustion engine. Such a filter disk can withstand changing load conditions of the internal combustion engine and can permanently clean itself. The separation of oil droplets and oil aerosols from the gases in the crankcase ventilation is therefore almost maintenance-free. Soot particles are also thrown off the filter disc.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt in einer einzigen Figur eine Filterscheibe 1, die auf einer Welle 2 im Kurbelgehäuseraum 5 einer nicht näher dargestellten Brennkraftmaschine befestigt ist. Die Strömungsrichtung der Kurbelgehäuseentlüftungsgase ist durch Pfeile angegeben. Die Gehäusedurchführung 3 ist in der Kurbelgehäusewand 4 eingedichtet und berührt mit ihrer Stirnseite die Filterscheibe 1. Die Gehäusedurchführung 3 ist mit einer Abtropfkante 6 versehen, damit bei Stillstand des Motors das an der Kurbelgehäusewand 4 ablaufende Öl nicht an die Filterscheibe 1 gelangt. The invention permits numerous embodiments. To further clarify its basic principle, one of these is shown in the drawing and is described below. In a single figure, this shows a filter disk 1, which is attached to a shaft 2 in the crankcase space 5 of an internal combustion engine, not shown. The direction of flow of the crankcase ventilation gases is indicated by arrows. The housing bushing 3 is sealed in the crankcase wall 4 and touches the filter disk 1 with its end face. The housing bushing 3 is provided with a drip edge 6 so that the oil running off the crankcase wall 4 does not reach the filter disk 1 when the engine is at a standstill.

Claims

Patentansprüche claims
1. Ölabscheider, welcher insbesondere zum Einsatz in Kurbelgehäuseentlüftungen einer Brennkraftmaschine vorgesehen ist, mit einer zur Durchströmung von den zu reinigenden Gasen vorgesehenen Filterscheibe, dadurch gekennzeichnet, dass Mittel zur Erzeugung einer Rotationsbewegung der Filterscheibe (1) vorgesehen sind und dass die Filterscheibe (1) mit einer Stirnseite an einem hervorstehenden Rand einer Gehäusedurchführung (3) anliegt.1. Oil separator, which is provided in particular for use in crankcase ventilation of an internal combustion engine, with a filter disk provided for the flow of the gases to be cleaned, characterized in that means for generating a rotational movement of the filter disk (1) are provided and that the filter disk (1) rests with an end face on a protruding edge of a housing bushing (3).
2. Ölabscheider nach Anspruch 1, dadurch gekennzeichnet, dass die Filterscheibe (1) auf einer angetriebenen Welle (2) befestigt ist.2. Oil separator according to claim 1, characterized in that the filter disc (1) is fixed on a driven shaft (2).
3. Ölabscheider nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Gehäusedurchführung (3) nahe ihres Randes eine Abtropfkante (6) hat.3. Oil separator according to claim 1 or 2, characterized in that the housing bushing (3) near its edge has a drip edge (6).
4. Ölabscheider nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Filterscheibe4. Oil separator according to at least one of the preceding claims, characterized in that the filter disc
(1) aus Fasermaterial gefertigt ist.(1) is made of fiber material.
5. Ölabscheider nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die innere Wandung der Gehäusedurchführung (3) trichterförmig, sich zu einer Öffnung (7) hin verjüngend gestaltet ist5. Oil separator according to at least one of the preceding claims, characterized in that the inner wall of the housing bushing (3) is funnel-shaped, tapering towards an opening (7)
6. Ölabscheider nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gehäusedurchführung (3) einen Flansch (8) mit einem sich daran anschließenden Stutzen (9) aufweist, und dass der Stutzen (9) durch eine Wandung (4) des zu entlüftenden Gehäuses hindurchgeführt ist.6. Oil separator according to at least one of the preceding claims, characterized in that the housing bushing (3) has a flange (8) with an adjoining connector (9), and that the connector (9) is passed through a wall (4) of the housing to be vented.
7. Zum Einsatz in Kurbelgehäuseentlüftungen einer Brennkraftmaschine vorgesehener Ölabscheider mit einer zur Durchströmung von den zu reinigenden Gasen vorgesehenen Filterscheibe, dadurch gekennzeichnet, dass die Filterscheibe (1) auf einer Nockenwelle, Ausgleichswelle oder Kurbelwelle der Brennkraftmaschine befestigt ist.7. For use in crankcase ventilation of an internal combustion engine provided oil separator with a filter disk provided for the flow of gases to be cleaned, characterized in that the filter disk (1) is attached to a camshaft, balancer shaft or crankshaft of the internal combustion engine.
8. Verwendung einer rotierenden, zur Durchströmung von den zu reinigenden Gasen vorgesehenen Filterscheibe zum Abscheiden von Öltröpfchen und Ölaerosolen aus Gasen einer Kurbelgehäuseentlüftung einer Brennkraftmaschine. 8. Use of a rotating filter disk provided for the throughflow of the gases to be cleaned for separating oil droplets and oil aerosols from gases from a crankcase ventilation of an internal combustion engine.
EP02701206A 2001-01-23 2002-01-18 Oil separator Expired - Lifetime EP1354129B8 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10102809 2001-01-23
DE10102809A DE10102809A1 (en) 2001-01-23 2001-01-23 oil separator
PCT/DE2002/000149 WO2002059466A1 (en) 2001-01-23 2002-01-18 Oil separator

Publications (3)

Publication Number Publication Date
EP1354129A1 true EP1354129A1 (en) 2003-10-22
EP1354129B1 EP1354129B1 (en) 2007-09-26
EP1354129B8 EP1354129B8 (en) 2008-01-23

Family

ID=7671406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02701206A Expired - Lifetime EP1354129B8 (en) 2001-01-23 2002-01-18 Oil separator

Country Status (6)

Country Link
US (1) US6814768B2 (en)
EP (1) EP1354129B8 (en)
AT (1) ATE374308T1 (en)
DE (3) DE10102809A1 (en)
ES (1) ES2292714T3 (en)
WO (1) WO2002059466A1 (en)

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FR2850037B1 (en) * 2003-01-17 2006-07-28 Simon Francois ROTARY MACHINE FOR GENERATING AN ADJUSTABLE FLUID FLOW AND CAPABLE OF CLEANING
US7285149B2 (en) * 2003-10-31 2007-10-23 Bendix Commercial Vehicle Systems Llc Oil separator for vehicle air system
DE102004048539A1 (en) * 2004-10-06 2006-04-13 Deutz Ag Oil separator for removing oil from crank housing ventilation gases from internal combustion engine has gases passing through separator body axially parallel to rotational axis and out through openings in circumferential face of separator
FR2886926B1 (en) * 2005-06-10 2007-08-31 Rexam Dispensing Systems Sas AIR FILTRATION DEVICE FOR LIQUID OR SEMI-LIQUID PRODUCT PUMP
DE102005034273A1 (en) * 2005-07-22 2006-06-14 Daimlerchrysler Ag Combustion engine e.g. for motor vehicle, has two cam shafts in cylinder head with first cam shaft having longitudinal bore hole for conveying Blow-By-Gas and oil separating device provided
NO330124B1 (en) * 2009-06-11 2011-02-21 Ntnu Tech Transfer As A separator for a gas / liquid stream
KR101512925B1 (en) * 2011-11-29 2015-04-16 싱유에 그룹 컴퍼니 리미티드 Handheld four-stroke engine lubricating system
CN108678837A (en) * 2018-06-22 2018-10-19 涂攸静 Gs-oil separator

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Also Published As

Publication number Publication date
DE10290230D2 (en) 2003-12-18
ES2292714T3 (en) 2008-03-16
US6814768B2 (en) 2004-11-09
WO2002059466A1 (en) 2002-08-01
DE50210974D1 (en) 2007-11-08
DE10102809A1 (en) 2002-08-14
ATE374308T1 (en) 2007-10-15
EP1354129B1 (en) 2007-09-26
US20030136264A1 (en) 2003-07-24
EP1354129B8 (en) 2008-01-23

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