EP0856644A1 - Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine - Google Patents
Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP0856644A1 EP0856644A1 EP98100966A EP98100966A EP0856644A1 EP 0856644 A1 EP0856644 A1 EP 0856644A1 EP 98100966 A EP98100966 A EP 98100966A EP 98100966 A EP98100966 A EP 98100966A EP 0856644 A1 EP0856644 A1 EP 0856644A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oil
- oil separator
- cylinder head
- siphon
- venting device
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase
Definitions
- the invention relates to a ventilation device for a crankcase of an internal combustion engine according to the preamble of claim 1.
- DE 41 18 557 A1 describes a generic ventilation device known for a crankcase of an internal combustion engine.
- the cylinder head cover are two with respect to an engine longitudinal axis mutually opposite oil separators with drip pans integrated, each of which has a siphon-type pipe socket branches off to the camshaft chamber.
- oil separators When venting the ventilation gases from the crankcase pass through the Camshaft space in the oil separator.
- the separated oil runs into the drip pans and flows over the pipe sockets into the camshaft space. From there it is via an oil return drained down.
- the de-oiled vent gases are then fed to the intake system of the internal combustion engine.
- the invention has for its object a ventilation device to create their siphon with inexpensive manufacture and simplified installation, no additional installation space is required.
- An essential advantage of the invention lies in the small space requirement the ventilation device according to the invention and thus achievable lower installation space height of the motor.
- the the oil level element the trough forming the siphon is in the cylinder head arranged and requires no additional space.
- the cylinder head cover can be made as flat as possible.
- the hollow forms a sufficiently large oil collection volume that from the expiring Oil from the oil separator is constantly refilled, causing a good siphon effect is achieved.
- the design of the siphon is not complex Manufacturing processes, such as bending processes, necessary. Because when installing the cylinder head cover on the cylinder head the inlet pipe arranged in the cylinder head cover inevitably dips into the recess in the cylinder head, is also the assembly of the ventilation device simplified.
- the trough is one that is required anyway Countersunk hole for the cylinder head screw formed so that no additional trough has to be made.
- the inlet pipe is expediently connected to the in the cylinder head cover integrated oil separator and is thus cast already taken into account when casting the cylinder head cover. A Subsequent mounting of the inlet pipe is therefore unnecessary. Alternatively, press the inlet pipe into the oil separator imaginable.
- the cover part of the oil separator is advantageously diagonal to the engine longitudinal axis, in the direction of the inlet pipes Guide ribs on the oil separated in the oil separator leads directly to the inlet pipe of the siphon.
- the oil separator preferably also has a diagonal in the lower part weirs running to the longitudinal axis of the engine, which prevent that separated oil is drawn towards the air outlet.
- FIG. 1 shows a ventilation device 1 for a crankcase 2 of an internal combustion engine partially shown with rows of cylinders arranged in a V-shape, of which only here a row of cylinders is shown.
- the venting device 1 can also be arranged in rows in internal combustion engines Cylinders are used.
- On the crankcase 2 is about 3 cylinder head screws in countersunk holes 4 a cylinder head 5 attached by a cylinder head cover 6 is covered.
- the ventilation device 1 has one with an intake system 7 of the internal combustion engine connected vent line 8, one arranged in the course of the ventilation line 8 and into the cylinder head cover 6 integrated oil separators 9 and a siphon 10 on.
- the vent line 8 is in a not shown Way connected to the crankcase of the internal combustion engine.
- vent gases from the crankcase 2 derived and fed to the oil separator 9.
- the in the Oil particles entrained in ventilation gases separate in the oil separator 9 and are not over the siphon 10 here shown, arranged in the cylinder head 5 and in the crankcase 2 Oil return fed through which the oil is also in a Oil pan, not shown, at the lower end of the crankcase 2 is traceable.
- the de-oiled vent gases are the intake system located after the oil separator 9 7 fed to the internal combustion engine and then the motor Combustion mixed. 1 and 2 is included the breather flow with solid arrows and the oil return shown with dashed arrows.
- the siphon 10 contains an inlet pipe 11 and an oil level element 12, the oil level element 12 being arranged in the cylinder head 5 Includes trough 3, which can be drilled or cast. in the present embodiment, the trough is expedient through the countersunk hole 3 for the cylinder head screw 4 formed.
- the inlet pipe 11 of the siphon 10 is on the oil separator 9 attached, preferably cast on the oil separator 9 or also pressed into the oil separator 9 and immersed according to the invention into the countersunk hole 3 for the cylinder head screw 4, the counterbore 3 also being cast can be.
- what is deposited in the oil separator 9 arrives Oil through the inlet pipe 11 of the siphon 10 into the counterbore 3 of the cylinder head screw 4.
- the siphon 10 is the oil return upstream, via which the oil via the cylinder head 5 and the crankcase 2 into the oil pan at the lower end of the crankcase 2 is returned.
- Fig. 2 several inlet pipes 11 over the length l of the oil separator 9 distributed.
- the countersunk hole 3 enables sufficient Length of the siphon 10 in which the draining oil collects and a liquid barrier, pressure equalizing Oil column builds up that an unwanted flow of the ventilation gases prevented by the inlet pipe 11 in countercurrent to the oil. Since the countersunk hole 3 from the oil separator 9 after flowing oil is filled, the excess occurs Oil over an upper edge of the counterbore 3 in the Oil return on.
- Fig. 2 shows a part of the integrated in the cylinder head cover 6
- Oil separator 9 the one of the intake system 7 of the Internal combustion engine side 13 of the cylinder head cover 6 runs in the direction of an engine longitudinal axis 14.
- the oil separator 9 comprises an integral part of the cylinder head cover 6 Lower part 15 and a cover part covering the lower part 15 16.
- the oil separator 9 is designed as a volume separator, which is reassuring over large cross sections and long distances of the oily vent gas and thus an oil separation enables.
- the lower part 15 and the cover part 16 form one box-shaped housing in which baffles 15a are arranged are that the vent gas stream entering the oil separator 9 is deflected several times, the impact surfaces 15a an inclination to a drainage channel running in the lower part 15 15b.
- the oil particles in the ventilation gases meet the baffles 15a, strike there down and flow into the feed pipes via the drainage channel 15b 11 of the siphon 10.
- the inner walls of the oil separator 9 are as possible rough to ensure good adhesion of the oil droplets to be separated to reach.
- the cover part 16 has a first air outlet arranged at the rear 17 mainly for full load ventilation and a second, laterally arranged air outlet 18 mainly for Partial load ventilation, both in the intake system 7 of the Internal combustion engine open.
- the ventilation device 1 can but only for venting at full load, at partial load or with mixed operation of the internal combustion engine as well as with a combination thereof, as in the present case, for Come into play.
- the lid part 16 is on an inside Provide guide ribs 19 running diagonally to the longitudinal axis 14 of the engine, which lead the separated oil to the feed pipes 11 (see Fig. 1).
- In the lower part 15 of the oil separator 9 are also weirs 20 running diagonally to the motor longitudinal axis 14, which prevent separated oil from moving towards the Air outlets 17, 18 is drawn.
- both air outlets 17, 18 in the cover part 16 of the oil separator 9 geodetically higher in the installed position of the internal combustion engine are in the lower part 15 as the oil inlet into the inlet pipes 11 the oil separator 9 results in cooperation with the im Lower part 15 of the cylinder head cover 6 arranged weirs 20 for Retaining the oil that the oil separated in the oil separator 9 not via the air outlets 17, 18 in the intake system 7 of the Internal combustion engine is pulled, but in the inlet pipes 11 reached.
- an area 21 of the air inlet into the oil separator 9 forms the cylinder head cover 6 bulkhead webs 22, an undesirable entry of spray oil from the chain space prevent in the oil separator 9.
- the direction of the bulkheads 22 depends on the direction of rotation of the timing chain. What is striking Spray oil must be thrown away from the oil separator 9.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
- Fig. 1
- einen Ausschnitt einer Ansicht von hinten auf eine Brennkraftmaschine mit einer erfindungsgemäßen Entlüftungsvorrichtung in einem Teilschnitt, wobei die Entlüftungsvorrichtung eine mit dem Ansaugsystem der Brennkraftmaschine verbundene Entlüftungsleitung, einen in einer Zylinderkopfhaube integrierten Ölabscheider sowie einen aus einem Zulaufrohr und einem Senklochbohrung bestehenden Siphon aufweist, wobei der Ölabscheider ein Unterteil und ein Deckelteil mit Leitrippen zur Führung des abgeschiedenen Öles umfaßt und
- Fig. 2
- eine Draufsicht auf die Zylinderkopfhaube mit dem in die Zylinderkopfhaube integrierten Unterteil des Ölabscheiders, wobei im Unterteil Wehre zum Rückhalten des Öles angeordnet sind.
Claims (8)
- Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine, an welchem über Zylinderkopfschrauben ein Zylinderkopf befestigt ist, der von einer Zylinderkopfhaube abgedeckt ist, wobei die Entlüftungsvorrichtung eine mit dem Ansaugsystem der Brennkraftmaschine verbundene Entlüftungsleitung, einen im Verlauf der Entlüftungsleitung angeordneten und in der Zylinderkopfhaube integrierten Ölabscheider sowie einen Siphon aufweist, der ein Zulaufrohr sowie ein Ölstandselement enthält, wobei das Zulaufrohr am Ölabscheider befestigbar ist und wobei der Siphon einem Ölrücklauf vorgelagert ist,
dadurch gekennzeichnet,
daß der Siphon (10) durch mindestens eine im Zylinderkopf (5) angeordnete Mulde (3) und das in die Mulde (3) eintauchende Zulaufrohr (11) gebildet ist. - Entlüftungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Mulde (3) des Siphons (10) durch eine Senklochbohrung für eine Zylinderkopfschraube (4) gebildet ist. - Entlüftungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß über die Länge (l) des Ölabscheiders (9) mehrere Zulaufrohre (11) verteilt sind. - Entlüftungsvorrichtung nach Anspruch 1 oder 3,
dadurch gekennzeichnet,
daß das Zulaufrohr (11) an den Ölabscheider (9) angegossen oder in den Ölabscheider (9) eingepreßt ist. - Entlüftungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Ölabscheider (9) ein Unterteil (15) und ein Deckelteil (16) umfaßt, wobei das Unterteil (15) einstückig mit der Zylinderkopfhaube (6) ausgebildet ist. - Entlüftungsvorrichtung nach Anspruch 1 oder 5,
dadurch gekennzeichnet,
daß der Ölabscheider (9) im Deckelteil (16) Leitrippen (19) zur Führung des abgeschiedenen Öles aufweist. - Entlüftungsvorrichtung nach einem der Ansprüche 1, 5 oder 6,
dadurch gekennzeichnet,
daß der Ölabscheider (9) im Unterteil (15) Wehre (20) zum Rückhalten des Öles aufweist. - Entlüftungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Zylinderkopfhaube (6) in einem Bereich (21) des Lufteintritts in den Ölabscheider (9) Abschottstege (22) für Spritzöl aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19703771 | 1997-02-01 | ||
DE19703771A DE19703771C1 (de) | 1997-02-01 | 1997-02-01 | Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0856644A1 true EP0856644A1 (de) | 1998-08-05 |
EP0856644B1 EP0856644B1 (de) | 2001-10-31 |
Family
ID=7819016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98100966A Expired - Lifetime EP0856644B1 (de) | 1997-02-01 | 1998-01-21 | Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
US (1) | US5975065A (de) |
EP (1) | EP0856644B1 (de) |
DE (1) | DE19703771C1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19937033A1 (de) * | 1999-08-05 | 2001-02-08 | Volkswagen Ag | Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine |
FR2819291B1 (fr) * | 2001-01-11 | 2003-03-14 | Renault | Dispositif de retour d'huile formant siphon pour moteur a combustion interne |
DE10131004A1 (de) * | 2001-06-27 | 2003-01-09 | Mann & Hummel Filter | Ansaugvorrichtung für eine Brennkraftmaschine mit Kurbelgehäuseentlüftung |
FR2874646B1 (fr) | 2004-08-27 | 2006-10-06 | Coutier Moulage Gen Ind | Deshuileur pour moteur a combustion interne |
FR2882783B1 (fr) * | 2005-03-07 | 2007-05-11 | Renault Sas | Dispositif de circulation d'huile pour moteur a combustion interne |
DE102006038831B4 (de) | 2006-08-18 | 2018-03-15 | Volkswagen Ag | Brennkraftmaschine mit Rückführung von Blow-By-Gasen |
FR2913055B1 (fr) | 2007-02-28 | 2011-03-25 | Peugeot Citroen Automobiles Sa | Moteur a combustion interne dote d'un dispositif de ventilation. |
DE102008022818A1 (de) * | 2008-05-08 | 2009-11-12 | Hengst Gmbh & Co.Kg | Ölabscheider mit Siphon |
US9732707B1 (en) * | 2013-12-09 | 2017-08-15 | High Output Technology, LLC | Vent for engine crankcases |
DE102016015111B4 (de) * | 2016-12-20 | 2021-10-14 | Deutz Aktiengesellschaft | Brennkraftmaschine |
CH717661A1 (de) * | 2020-07-15 | 2022-01-31 | Liebherr Machines Bulle Sa | Aerosolseparator zum Abscheiden von Aerosolen in einem Blow-by-Gas. |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128470A1 (de) * | 1981-07-18 | 1983-01-27 | Bayerische Motoren Werke Ag | Zyklonoelabscheider |
GB2155998A (en) * | 1984-03-15 | 1985-10-02 | Honda Motor Co Ltd | Crankcase ventilating system and method of removing oil mist from gas in the system |
DE3713210C2 (de) | 1987-04-18 | 1991-08-01 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De | |
EP0454512A1 (de) * | 1990-04-26 | 1991-10-30 | Automobiles Peugeot | Reinigungs- und Rezirkulationseinrichtung für die Durchblasgase einer Brennkraftmaschine und Brennkraftmaschine ausgerüstet mit dieser Einrichtung |
DE4118557A1 (de) | 1991-06-06 | 1992-12-10 | Daimler Benz Ag | Brennkraftmaschine mit einer ansaugleitung zur frischluftansaugung |
EP0732484A1 (de) | 1995-03-13 | 1996-09-18 | Mercedes-Benz Ag | Entlüftungsvorrichtung für das Kurbelgehäuse einer Brennkraftmaschine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2341267A1 (de) * | 1973-08-16 | 1975-03-13 | Daimler Benz Ag | Fluessigkeitsstandgefaess fuer fluessigkeitsabscheider |
DE3152747C2 (de) * | 1981-07-18 | 1984-01-26 | Bayerische Motoren Werke Ag, 8000 Muenchen | Zyklonölabscheider |
JPS5976709U (ja) * | 1982-11-15 | 1984-05-24 | 本田技研工業株式会社 | 内燃エンジンのブロ−バイガス通路 |
JPS5996469A (ja) * | 1982-11-24 | 1984-06-02 | Honda Motor Co Ltd | 内燃機関のブロ−バイガス取出装置 |
JPS61277814A (ja) * | 1985-06-03 | 1986-12-08 | Honda Motor Co Ltd | ブロ−バイガス環元装置 |
JP2647951B2 (ja) * | 1989-02-28 | 1997-08-27 | ヤマハ発動機株式会社 | 車両用エンジンのブローバイガス回収装置 |
JP3314850B2 (ja) * | 1995-08-11 | 2002-08-19 | 本田技研工業株式会社 | 内燃機関のブローバイガスのブリーザ構造 |
DE19608066C1 (de) * | 1996-03-02 | 1997-06-05 | Daimler Benz Ag | Kurbelraumentlüftung für eine Brennkraftmaschine |
-
1997
- 1997-02-01 DE DE19703771A patent/DE19703771C1/de not_active Expired - Fee Related
-
1998
- 1998-01-21 EP EP98100966A patent/EP0856644B1/de not_active Expired - Lifetime
- 1998-01-29 US US09/015,466 patent/US5975065A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128470A1 (de) * | 1981-07-18 | 1983-01-27 | Bayerische Motoren Werke Ag | Zyklonoelabscheider |
GB2155998A (en) * | 1984-03-15 | 1985-10-02 | Honda Motor Co Ltd | Crankcase ventilating system and method of removing oil mist from gas in the system |
DE3713210C2 (de) | 1987-04-18 | 1991-08-01 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De | |
EP0454512A1 (de) * | 1990-04-26 | 1991-10-30 | Automobiles Peugeot | Reinigungs- und Rezirkulationseinrichtung für die Durchblasgase einer Brennkraftmaschine und Brennkraftmaschine ausgerüstet mit dieser Einrichtung |
DE4118557A1 (de) | 1991-06-06 | 1992-12-10 | Daimler Benz Ag | Brennkraftmaschine mit einer ansaugleitung zur frischluftansaugung |
EP0732484A1 (de) | 1995-03-13 | 1996-09-18 | Mercedes-Benz Ag | Entlüftungsvorrichtung für das Kurbelgehäuse einer Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
US5975065A (en) | 1999-11-02 |
DE19703771C1 (de) | 1998-06-25 |
EP0856644B1 (de) | 2001-10-31 |
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