WO2000057038A1 - Ölabscheider zur entölung von kurbelgehäuse-entlüftungsgasen einer brennkraftmaschine - Google Patents
Ölabscheider zur entölung von kurbelgehäuse-entlüftungsgasen einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2000057038A1 WO2000057038A1 PCT/EP2000/002230 EP0002230W WO0057038A1 WO 2000057038 A1 WO2000057038 A1 WO 2000057038A1 EP 0002230 W EP0002230 W EP 0002230W WO 0057038 A1 WO0057038 A1 WO 0057038A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil separator
- internal combustion
- combustion engine
- oil
- cyclones
- Prior art date
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
- F01M2013/0038—Layout of crankcase breathing systems
- F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
- F01M2013/0061—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers
- F01M2013/0066—Layout of crankcase breathing systems having one or more deoilers having a plurality of deoilers in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
- F01M2013/0427—Separating oil and gas with a centrifuge device the centrifuge device having no rotating part, e.g. cyclone
Definitions
- Oil separator for de-oiling crankcase ventilation gases from an internal combustion engine
- the present invention relates to an oil separator for de-oiling crankcase ventilation gases of an internal combustion engine, the oil separator comprising a cyclone which has a gas inlet connected to the crankcase of the internal combustion engine, a gas outlet connected to the intake tract of the internal combustion engine and one with an oil suction of the internal combustion engine connected oil outlet.
- An oil separator of the type mentioned above is known from DE 42 14 324 C2.
- This oil separator uses a single cyclone, which is dimensioned so that it can process the maximum amount of ventilation gases.
- An essential feature of this known oil separator is that a downpipe connects to the oil outlet of the cyclone, the outlet of which is arranged below the oil level of the oil sump of the associated internal combustion engine, and that a normally open float valve housed in a lower cyclone-side housing part has a check from the oil sump prevents the internal combustion engine and that the entire oil separator is connected as a subassembly to the downpipe.
- the object of the present invention is therefore to create an oil separator of the type mentioned at the outset which avoids the disadvantages mentioned and which has an optimal, ie complete or almost complete, working range, in particular over a very large working range of all operating conditions of the internal combustion engine which occur in practice Separation of oil from the crankcase ventilation gases guaranteed.
- This object is achieved by an oil separator of the type mentioned at the outset, which is characterized in that several smaller cyclones connected in parallel are provided instead of a single cyclone.
- the oil separator according to the invention in comparison with an oil separator with a single cyclone, the optimum working range of the oil separator is substantially increased.
- the oil separator shows a significantly improved separation performance with low volume flows of the crankcase ventilation gases as well as greater insensitivity to fluctuations in this volume flow.
- the oil separator according to the invention achieves a significantly reduced dependency of the separation performance and thus the efficiency on the operating conditions of the associated internal combustion engine, which significantly reduces the oil load on the intake air of the internal combustion engine and what reduces the oil loss of the internal combustion engine via the crankcase ventilation.
- the cyclones are designed with a tangential flow.
- This tan gentiale stream flow particularly a besonC ".
- DERS compact design that keeps low compared to an axial flow to the height of the cyclones.
- a further embodiment of the invention provides that the bodies of the individual cyclones comprise parallel to each other comparable ⁇ current central axes and are combined to form one cyclone body component. Since each cyclone only a corresponding one of the number of cyclones fraction of crankcase ventilation gases must process of, each cyclone may be carried out with correspondingly reduced-height corresponding smaller, particularly with small diameter and ⁇ Nerem, what is more important. Thereby the overall size of the oil separator is advantageously compact, although the diameter can be slightly larger compared to a conventional oil separator, but the overall height is considerably smaller. This makes it much easier to accommodate the oil separator in an engine compartment, for example a motor vehicle, where cramped conditions are often found.
- the inflow channels leading to the respective gas inlet of the individual cyclones are formed from a single, splitting or dividing main inflow channel.
- the main inflow channel and the individual inflow channels are expediently combined to form an inflow channel component.
- a further step in reducing the individual parts of the oil separator is that the cyclone body component and the inflow channel component are combined to form a main component.
- the individual cyclones of the oil separator can be arranged as a bundle in a compact component; alternatively, the design of the oil separator with several individual cyclo- NEN the advantageous possibility that the individual cyclones are arranged decentrally in and / or on the internal combustion engine. This creates the possibility of accommodating the individual cyclones separately from one another at locations in or on the internal combustion engine where there is just room for a single cyclone. As a result, small dead spaces that are still present and which could not previously be used can usefully be used in each case for a cyclone that is relatively small in itself.
- the individual cyclones and / or the associated feed and discharge lines can be at least partially integrated into one or more other components of the internal combustion engine.
- the effort for the production and installation of the individual parts of the oil separator and / or its feed and discharge lines can be reduced.
- the installation space required for the individual parts of the oil separator and for its supply and discharge lines can also be reduced in this way.
- the cylinder head cover or the air filter housing thereof are particularly suitable as components of the internal combustion engine.
- the components mentioned offer free spaces or previous dead spaces in which the cyclones and further parts of the oil separator can be accommodated without requiring additional space.
- these components are in any case in the vicinity or in the course of the flow paths which the crankcase ventilation gas as well as the oil and the cleaned gas separated therefrom must travel.
- Figure 1 shows an oil separator in vertical section
- FIG. 2 shows the oil separator from FIG. 1 in a horizontal section along the line II-II in FIG. 1.
- the two figures of the drawing show an exemplary embodiment of an oil separator 1 which comprises four cyclones 11, 12, 13, 14.
- the cyclones 11-14 are combined into a one-piece compact main component 10.
- the cyclone 11 can be seen in view and the cyclone 12 in vertical section, the associated section line I - I being angled in accordance with FIG. 2.
- the cyclones 13 and 14 are not visible in FIG. 1 because they lie in front of the cutting plane.
- a main inflow channel 20 can be seen at the top right in FIG. 1, the outer, ie right end of which is designed as a transition piece 28 with a line connecting piece 29 which is circular in cross section. Seen from right to left, ie in the direction of flow of a crankcase ventilation gas to be conducted through the oil separator 1, the inflow channel 20 becomes flatter and, which is not visible in FIG. 1, at the same time wider, the cross-sectional area thereof remaining essentially constant.
- the inflow channel 20 is divided into four individual inflow channels or gas inlets 21-24, of which only the channel or inlet 22 to the second cyclone in FIG. 1 12 is visible. In this way, the incoming gas stream is distributed to the four cyclones 11-14, each with a tangential flow.
- the gas flow is set into a vortex flow, which ensures that entrained oil droplets are deposited on the inner surface of the cyclones 11-14 and flow downward from there.
- the gas flow freed from the oil droplets emerges from each cyclone 11-14 through an associated gas outlet 31-34 upwards and passes through a collecting hood 38 into a line connecting piece 39.
- a gas line can be connected to this connecting piece 39, which leads to an air intake tract of an associated one Internal combustion engine leads.
- the oil separated in the cyclones 11-14 flows downward within the cyclones 11-14 and exits at its lower end through an oil outlet 41-44 into a collecting funnel 48.
- a line connecting piece 49 is provided at its lowest point, to which an oil return line to an oil sump of the associated internal combustion engine can be connected.
- the cross-section through the oil separator 1 shown in FIG. 2 shows in particular the space-saving and compact arrangement of the four cyclones 11-14.
- the line connecting piece 29 is visible, to which a line coming from the crankcase of the associated internal combustion engine can be connected, through which the crankcase ventilation gas coming from the crankcase and loaded with oil droplets can be guided to the oil separator 1.
- the main inflow channel 20 widens in the region of the transition piece 28 and, as explained with reference to FIG. 1, flattens out at the same time. It divides even further to the left Main inflow channel 20 into four inflow channels or gas inlets 21-24, each of which is assigned to one of the cyclones 11-14.
- Each inflow channel or gas inlet 21-24 leads tangentially into its associated cyclone 11-14.
- the course is such that there is a clockwise gas flow, while in the cyclones 13 and 14 the gas flow takes place with a left turn.
- the view falls through the associated gas outlet 31-34 to the oil outlet 41-44 located at the bottom of the cyclone 11-14.
- the collecting funnel 48 At the bottom in the background in FIG. 2 is a small part of the collecting funnel 48 recognizable for the separated 01.
- FIG. 2 in particular shows that the incoming gas stream is distributed to the four individual cyclones 11-14 without deflection and thus practically without increasing the flow resistance.
- This distribution of the gas flow over several cyclones results in an improved oil separation, in particular in the case of smaller amounts of ventilation gases, while at the same time being less sensitive to fluctuations in the volume flow of the crankcase ventilation gas.
- the oil separator 1 can be made up of a few individual parts, in the present example the main component 10, the transition piece 28, the gas outlets 31 - 34 combined into one part, the collecting hood 38 and the collecting funnel 48 manufacture.
- individual or all connecting lines, at least over partial sections, can be integrated into further components of the internal combustion engine, which reduces the production and assembly of separate lines or even completely makes fluid.
- the parts of the oil separator 1 mentioned are expediently die-cast parts made of light metal or injection-molded parts made of plastic, with a plastic to be selected which can withstand the thermal and chemical loads which occur.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cyclones (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00916937.6A EP1080298B2 (de) | 1999-03-18 | 2000-03-14 | Ölabscheider zur entölung von kurbelgehäuse-entlüftungsgasen einer brennkraftmaschine |
DE50003081T DE50003081D1 (de) | 1999-03-18 | 2000-03-14 | Ölabscheider zur entölung von kurbelgehäuse-entlüftungsgasen einer brennkraftmaschine |
JP2000606882A JP2002540338A (ja) | 1999-03-18 | 2000-03-14 | 内燃機関のクランクケースベンチレーション・ガスから脱油するためのオイル分離装置 |
DE20023968U DE20023968U1 (de) | 1999-03-18 | 2000-03-14 | Ölabscheider zur Entölung von Kurbelgehäuse-Entlüftungsgasen einer Brennkraftmaschine |
US09/700,852 US6279556B1 (en) | 1999-03-18 | 2000-03-14 | Oil separator for removing oil from the crankcase ventilation gases of an internal combustion engine |
BR0005393-7A BR0005393A (pt) | 1999-03-18 | 2000-03-14 | Separador de óleo para desengordurar os gases de ventilação da caixa de manivela de um motor de combustão interna |
DE20023969U DE20023969U1 (de) | 1999-03-18 | 2000-03-14 | Ölabscheider zur Entölung von Kurbelgehäuse-Entlüftungsgasen einer Brennkraftmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19912271.7 | 1999-03-18 | ||
DE19912271A DE19912271A1 (de) | 1999-03-18 | 1999-03-18 | Ölabscheider zur Entölung von Kurbelgehäuse-Entlüftungsgasen einer Brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000057038A1 true WO2000057038A1 (de) | 2000-09-28 |
Family
ID=7901552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/002230 WO2000057038A1 (de) | 1999-03-18 | 2000-03-14 | Ölabscheider zur entölung von kurbelgehäuse-entlüftungsgasen einer brennkraftmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6279556B1 (de) |
EP (1) | EP1080298B2 (de) |
JP (1) | JP2002540338A (de) |
KR (1) | KR100636758B1 (de) |
BR (1) | BR0005393A (de) |
DE (4) | DE19912271A1 (de) |
WO (1) | WO2000057038A1 (de) |
Cited By (1)
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DE102005061256A1 (de) * | 2005-12-20 | 2007-06-21 | Günter Dr. Slowik | Verfahren und Vorrichtung zur Entölung von Kurbelgehäuseentlüftungsgasen einer Brennkraftmaschine |
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1999
- 1999-03-18 DE DE19912271A patent/DE19912271A1/de not_active Withdrawn
-
2000
- 2000-03-14 DE DE20023969U patent/DE20023969U1/de not_active Ceased
- 2000-03-14 BR BR0005393-7A patent/BR0005393A/pt not_active IP Right Cessation
- 2000-03-14 US US09/700,852 patent/US6279556B1/en not_active Expired - Lifetime
- 2000-03-14 DE DE20023968U patent/DE20023968U1/de not_active Ceased
- 2000-03-14 DE DE50003081T patent/DE50003081D1/de not_active Expired - Lifetime
- 2000-03-14 WO PCT/EP2000/002230 patent/WO2000057038A1/de active IP Right Grant
- 2000-03-14 EP EP00916937.6A patent/EP1080298B2/de not_active Expired - Lifetime
- 2000-03-14 JP JP2000606882A patent/JP2002540338A/ja active Pending
- 2000-03-14 KR KR1020007012907A patent/KR100636758B1/ko active IP Right Grant
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005061256A1 (de) * | 2005-12-20 | 2007-06-21 | Günter Dr. Slowik | Verfahren und Vorrichtung zur Entölung von Kurbelgehäuseentlüftungsgasen einer Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
BR0005393A (pt) | 2001-01-30 |
DE20023969U1 (de) | 2008-03-06 |
DE20023968U1 (de) | 2008-03-06 |
DE50003081D1 (de) | 2003-09-04 |
DE19912271A1 (de) | 2000-09-28 |
KR100636758B1 (ko) | 2006-10-20 |
EP1080298B1 (de) | 2003-07-30 |
EP1080298B2 (de) | 2018-08-29 |
EP1080298A1 (de) | 2001-03-07 |
JP2002540338A (ja) | 2002-11-26 |
US6279556B1 (en) | 2001-08-28 |
KR20010071280A (ko) | 2001-07-28 |
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