EP0870908B1 - Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine - Google Patents
Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP0870908B1 EP0870908B1 EP98104570A EP98104570A EP0870908B1 EP 0870908 B1 EP0870908 B1 EP 0870908B1 EP 98104570 A EP98104570 A EP 98104570A EP 98104570 A EP98104570 A EP 98104570A EP 0870908 B1 EP0870908 B1 EP 0870908B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oil
- head cover
- cylinder
- ventilation device
- cylinder head
- 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
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
- 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.
- a generic venting device is from DE 35 09 439 C2 known.
- the ventilation device has one in one Cylinder head cover of the internal combustion engine integrated oil separator on which is formed from an upper part and a bottom part is.
- the upper part is in one piece with the cylinder head cover connected and has baffles for oil separation.
- the invention has for its object a ventilation device to create that uses existing space, easily and is inexpensive to manufacture, as well as a time and cost saving Assembly enables.
- a major advantage of the invention is that it is small Space requirement of the ventilation device and the achieved thereby Weight saving.
- the gradient of the oil separator in the cross-engine direction creates space for the valve train, in particular for the valve actuation lever of the internal combustion engine.
- the cylinder head cover can be made as flat as possible.
- the slope in the transverse direction of the engine causes one Enlargement of the seal contact area.
- the oil separator also has a gradient in the longitudinal direction of the engine from Entry to the oil outlet on, making the oil outlet geodetic is lower than the inlet for the ventilation gases and thus the oil separated in the oil separator flows towards the oil outlet.
- the oil separator works thereby in addition to the labyrinth separator as a volume separator.
- the parting plane of the oil separator advantageously runs between a plate-shaped base part and a trough-shaped Upper part, which creates the in the tub-shaped upper part arranged ridges sealing after installing the oil separator also arranged on the plate-shaped base part plate-shaped seal rests. With a course the parting line through the webs i.e.
- the oil leak from the oil separator is designed as a siphon and prevents unwanted inflow of ventilation gases through the oil outlet in the oil separator countercurrent to oil.
- a pre-separator within the Cylinder head cover bulkheads provided together with a chainshaft from the camshaft chamber essentially separate so that only the vent gases over get a passage into the camshaft space and that Spray oil on before entering the camshaft chamber the bulkheads are roughly separated.
- the camshaft space is not flooded by the spray oil.
- the different The lengths of the partition bars depend on the direction of rotation of the crankshaft dependent, the shorter bulkhead a free one Cross section, the passage mentioned above, for the vent gas from the chain shaft into the camshaft space.
- the cylinder head cover is preferably made from a die-cast part formed, whereby no further deburring other than Processing steps are necessary.
- the entry into the oil separator expediently points Slits with lamellas and caused by its design another external oil separation, i.e. an oil separation, which takes place outside the actual oil separator.
- an oil separation which takes place outside the actual oil separator.
- the first external oil separation takes place as already mentioned by means of the bulkheads in the chain shaft. It also prevents the chain shaft facing away as well the arrangement facing the cylinder head cover side wall and Design of the entry of a transfer of spray oil the camshaft space.
- the upper part of the oil separator advantageously has one Partition surface in which a catch groove is provided for the seal is.
- a catch groove is provided for the seal is.
- FIG. 1 shows a ventilation device 1 for a crankcase of an internal combustion engine, not shown here in an inclined installation position.
- a cylinder head on the crankcase 2 attached, covered by a cylinder head cover 3 is, the cylinder head cover 3 over a bottom Chain shaft 4 described in more detail (see FIG. 2) and one Camshaft space 5 of the cylinder head 2 extends.
- the cylinder head cover 3 is preferably by a die-cast aluminum educated.
- the venting device 1 has a substantially in the Cylinder head cover 3 integrated oil separator 6 on one an intake system of the internal combustion engine, not shown here opposite side 7 of the cylinder head cover 3 in the direction a motor longitudinal axis 8 (see Fig. 2).
- the oil separator 6 comprises one piece with the cylinder head cover 3 formed upper part 9 and a covering the upper part 9, plate-shaped bottom part 10, 9 the oil separator 6 formed as baffles webs 11 are a labyrinth as shown in FIG. 3 and the oil separation serve.
- FIG. 2 shows the cylinder head cover 3 with the oil separator 6, the upper part 9 and the fastening screws 12 with the upper part 9 connected bottom part 10 of the oil separator 6 form a box-shaped housing. Between upper part 9 and bottom part 10 of the oil separator 6 is one shown in FIG. 1 Seal 13 arranged.
- the plate-shaped bottom part 10 of the oil separator 6 has an inlet 14 for the Vent gases and an oil outlet 15 for the separated Oil on.
- the inlet 14 consists of several diagonally to the engine longitudinal axis 8 extending slots 16 with fins 17 for Protection against splash oil from the camshaft chamber 5.
- the oil outlet 15 comprises a cast on the bottom part 10
- the height of the weirs 20 is designed such that the oil drain tube 18 in all swivel angles of the internal combustion engine always below the oil level in the oil pocket 19 lies, i.e. the swivel angle determines the contour of the oil pocket 19.
- the oil drain tube 18 has two at its free end 21 Bevels 22 and 23 on the one hand, a closure of the oil drain tube 18 in the event of a possible bump on the ground prevent the oil pocket 19 and on the other hand the freedom of movement of the oil drain tube 18 within the through the oil pocket 19 given tolerances.
- the oil drain tube 18 can thus be arranged as close as possible to the bottom of the oil pocket 19 his.
- the chain shaft 4 and the camshaft space 5 are inside the cylinder head cover 3 by two spaced and Partition webs 25, 26 running in the direction of a vertical axis 24 and a camshaft bearing arranged between the bulkheads 25, 26 27 in addition to the camshaft, not shown here separated from each other, which prevents penetration of spray oil a on a drive wheel 28 rotating control chain 29 from the Chain slot 4 is prevented.
- the different length of the Isolation webs 25, 26 depend on the direction of rotation D Timing chain 29, viewed in the direction of rotation D of timing chain 29 on the shorter bulkhead 26 the longer bulkhead 25 follows. That through the timing chain 29 in the cylinder head cover 3 entrained oil mainly flows over the longer bulkhead 25 back into the chain shaft 4.
- the shorter bulkhead 26 leaves a passage 30 for the path of the vent gas free in the camshaft chamber 5.
- the oil separator 6 has both a slope G L (see FIG. 3) running in the direction of the longitudinal axis 8 of the engine from the inlet 14 to the oil outlet 15 and a slope G Q (see FIG. 1) extending in the direction of a transverse engine axis 31, the oil outlet 15 is arranged at the geodetically lowest point.
- the slope of the oil separator 6 in the transverse direction of the motor axis 31 is substantially eliminated in the inclined installation position of the internal combustion engine, so that a parting plane 32 between the top part 9 and the bottom part 10 of the oil separator 6 or a parting surface 32a of the top part 9 and a parting surface 32b of the bottom part 10 in the Horizontal lies (see Fig. 1).
- FIG. 3 shows a side view of the cylinder head cover 3 with the integrally molded upper part 9 of the oil separator 6.
- the webs 11 of the upper part 9 forming the labyrinth are compared to the separating surface 32a of the upper part 9 set back somewhat in the direction of the motor vertical axis 24, so that the seal 13 in the assembled state of the oil separator 6 rests firmly on the separating surface 32a of the upper part 9 which runs at an angle ⁇ to the motor transverse axis 31 due to the gradient G Q (see FIG. 1) and thus is tightly clamped between the upper part 9 and the bottom part 10.
- the forces acting on the seal 13 run at an angle ⁇ to the motor transverse axis 31 in contrast to the forces of the fastening screws 12 acting in the direction of the motor vertical axis 24.
- the oil separator 6 is in the upper part via an intake port 33 9 in connection with the intake system of the internal combustion engine.
- the intake manifold 33 is molded onto the cylinder head cover 3, wherein a first portion 33a of the intake port 33 in Direction of the motor vertical axis 24 and a second section 33b in Direction of the motor transverse axis 31, i.e. over the cylinder head cover 3, runs (see also Fig. 2).
- the two perpendicular to each other extending sections 33a, 33b on the one hand enable one Deflection of the vent gas from that facing away from the intake system to the side of the internal combustion engine facing the intake system and on the other hand a die-cast-compatible production the cylinder head cover 3.
- a free end 34 of the intake manifold 33 has a partially molded one for manufacturing reasons Bead 35, which slides on a drawn on the nozzle 33 Hose prevented.
- Bead 35 which slides on a drawn on the nozzle 33 Hose prevented.
- One because of the inclined Installation position of the motor beveled rib 36 is in the upper part 9 formed at the transition in the intake manifold 33, so that no Oil is drawn into the intake port 33.
- Fig. 4 shows the parting surface 32b of the bottom part 10 on which the Seal 13 can rest.
- the seal 13 can be both pure Elastomer seal as well as a sandwich seal be, the sandwich seal one between two rubber layers inlaid metal layer.
- the pressing of the Elastomer seal in the so-called shunt method is through arranged on the bottom part 10 in the area of the fastening screws 12
- Spacers 37 limited in the assembled state of the oil separator 6 on the separating surface 32a of the upper part 9 rest and thus a space defined for the seal 13 form between bottom part 10 and top part 9.
- the sandwich seal is pressed in the so-called main closing procedure.
- the spacers 37 serve at the same time as holding elements for the seal 13 the bottom part 10 contact elements 38 for positioning the bottom part 10 on the upper part 9, which cooperate with the upper part 9 and also as holding elements for the seal 13 serve.
- Fig. 3 are in the area of the contact elements 38 following the parting surface 32a of the upper part 9 thickenings 39, which can also be trapezoidal, arranged to enlarge the contact surface of the seal 13.
- the separating surface 32a of the upper part 9 also has one Catch groove 40, in which the seal 13 in the assembled State of the oil separator 6 presses.
- venting are those when operating the internal combustion engine resulting ventilation gases derived from the crankcase and reach over the chain shaft 4 in the extension of the bulkhead 26 arranged passage 30 in the camshaft space 5, with a first pre-separation of the in oil particles carried along with the ventilation gases at the bulkheads 25, 26 takes place.
- the vent gases flow over the Passage 30 into the camshaft space 5 and experience one 180 ° deflection, making it suitable for a second pre-separation a wall of the cylinder head cover 3 and then against the fins 17 of the inlet 14 bounce into the oil separator 6.
- the entrance 14 is designed such that the one described above Vent gas flow or deflection forms and also no spray oil from the camshaft chamber 5 into the oil separator 6 can inject.
- vent gases pass through inlet 14 in the oil separator 6.
- the rest in the ventilation gases entrained oil particles now separate in the oil separator 6 and will be here via the oil outlet 15 not shown, in the cylinder head 2 and in the crankcase arranged oil return through which the separated Oil particles then in a likewise not shown Oil pan at the lower end of the crankcase are traceable.
- the de-oiled vent gases are discharged through the intake port 33 the intake system located after the oil separator 6 fed to the internal combustion engine and then the motor Combustion mixed.
- the webs 11 of the upper part 9, which are designed as baffles, are arranged in such a way that the vent gas stream entering the oil separator 6 is deflected several times, the webs 11 running diagonally to the longitudinal axis 8 of the engine and the separated oil leading to the oil outlet 15.
- the oil particles of the ventilation gases hit the webs 11, settle there and flow via the base part 10 into the oil outlet 15.
- the oil separator 6 is designed both as a volume separator and as a labyrinth separator, the transition from small to large cross sections and long ways to calm the oil-containing venting gas and baffles to deflect the venting gas stream enable oil separation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
- Fig. 1
- einen Schnitt durch einen Zylinderkopf einer Brennkraftmaschine, der von einer Zylinderkopfhaube abgedeckt ist, mit einer erfindungsgemäßen Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine, wobei die Entlüftungsvorrichtung einen Ölabscheider aufweist, welcher aus einem Oberteil und einem Bodenteil besteht,
- Fig. 2
- eine Ansicht von unten auf die perspektivisch dargestellte Zylinderkopfhaube mit dem einstückig mit der Zylinderkopfhaube verbundenen Oberteil und dem das Oberteil abdeckenden Bodenteil des Ölabscheiders gemäß Fig. 1,
- Fig. 3
- einen Ausschnitt einer Seitenansicht auf die Zylinderkopfhaube mit dem Oberteil des Ölabscheiders gemäß Fig. 1 und 2, wobei im Oberteil Schikanen zur Ölabscheidung ausgebildet sind, und
- Fig. 4
- eine Innenansicht auf das Bodenteil des Ölabscheiders.
Claims (5)
- Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine, an welchem ein Zylinderkopf befestigt ist, der von einer Zylinderkopfhaube abgedeckt ist, wobei die Entlüftungsvorrichtung einen im wesentlichen in die Zylinderkopfhaube integrierten und mit Schikanen versehenen Ölabscheider aufweist, der durch ein einstückig mit der Zylinderkopfhaube verbundenes Oberteil und ein Bodenteil gebildet ist, wobei der Ölabscheider einen Eintritt, einen mit dem Ansaugsystem der Brennkraftmaschine verbundenen Ansaugstutzen, sowie einen Ölaustritt aufweist, und wobei die Schikanen des Ölabscheiders durch Stege des Oberteils gebildet werden,
dadurch gekennzeichnet, daß der Ölabscheider (6) ein in Richtung einer Motorlängsachse (8) vom Eintritt (14) zum Ölaustritt (15) verlaufendes Gefälle (GL) und ein in Richtung einer Motorquerachse (31) verlaufendes Gefälle (GQ)aufweist und der Ölaustritt (15) des Ölabscheiders (6) ein Ölablaufröhrchen (18) umfaßt, das in eine Öltasche (19) eintaucht, welche durch im Zylinderkopf (2) angeformte Wehre (20) gebildet ist. - Entlüftungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Zylinderkopfhaube (3) einen Kettenschacht (4) und einen Nockenwellenraum (5) abdeckt, wobei innerhalb der Zylinderkopfhaube (3) zwischen Kettenschacht (4) und Nockenwellenraum (5) Abschottstege (25, 26) zur Bildung eines Vorabscheiders vorgesehen sind. - Entlüftungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die Zylinderkopfhaube (3) durch ein Druckgußteil gebildet ist. - Entlüftungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß der Eintritt (14) in den Ölabscheider (6) Schlitze (16) mit Lamellen (17) aufweist. - Entlüftungsvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß das Oberteil (9) des Ölabscheiders (6) eine Trennfläche (32a) aufweist, in der eine Fangnut (40) für eine Dichtung (13) vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19715061A DE19715061C2 (de) | 1997-04-11 | 1997-04-11 | Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine |
DE19715061 | 1997-04-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0870908A1 EP0870908A1 (de) | 1998-10-14 |
EP0870908B1 true EP0870908B1 (de) | 2001-12-05 |
Family
ID=7826164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98104570A Expired - Lifetime EP0870908B1 (de) | 1997-04-11 | 1998-03-13 | Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0870908B1 (de) |
DE (2) | DE19715061C2 (de) |
ES (1) | ES2168695T3 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2789125B1 (fr) * | 1999-01-29 | 2001-11-09 | Renault | Dispositif de reaspiration des gaz de carter d'un moteur |
DE19951028A1 (de) | 1999-10-22 | 2001-04-26 | Volkswagen Ag | Entlüftungsvorrichtung mit Ölabscheider 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 |
DE10127817A1 (de) * | 2001-06-07 | 2002-12-12 | Bosch Gmbh Robert | Ölabscheidevorrichtung für Kurbelgehäusegase einer Verbrennungskraftmaschine |
DE10247175A1 (de) * | 2002-10-10 | 2004-04-22 | Daimlerchrysler Ag | Entlüftungsvorrichtung für ein Kurbelgehäuse einer Brennkraftmaschine |
AT6652U1 (de) | 2002-10-17 | 2004-01-26 | Avl List Gmbh | Kurbelgehäuseentlüftungssystem einer brennkraftmaschine |
EP1624179B1 (de) * | 2003-03-11 | 2011-04-13 | Yanmar Co., Ltd. | Obere motorstruktur |
JP2004353505A (ja) * | 2003-05-28 | 2004-12-16 | Petroliam Nasional Bhd | エンジンにおけるブリーザ装置 |
DE102004014693A1 (de) * | 2004-03-25 | 2005-10-13 | Volkswagen Ag | Druckregelventil für eine Brennkraftmaschine |
FR2868468B1 (fr) * | 2004-04-06 | 2008-03-21 | Renault Sas | Dispositif de retour d huile formant siphon pour moteur a combustion interne |
DE102005003149B8 (de) * | 2005-01-21 | 2008-04-10 | Joma-Polytec Kunststofftechnik Gmbh | Ölabscheider zur Entölung des Kurbelgehäuse-Entlüftungsgases und Verfahren |
DE102006008516A1 (de) * | 2006-02-23 | 2007-08-30 | Fev Motorentechnik Gmbh | Zylinderkopf einer Brennkraftmaschine |
DE102008022818A1 (de) * | 2008-05-08 | 2009-11-12 | Hengst Gmbh & Co.Kg | Ölabscheider mit Siphon |
DE102008058962A1 (de) * | 2008-11-25 | 2010-05-27 | Hengst Gmbh & Co.Kg | Kurbelgehäuseentlüftungseinrichtung einer Brennkraftmaschine |
DE102011008537A1 (de) * | 2011-01-13 | 2012-07-19 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Motorblock |
DE102016015111B4 (de) | 2016-12-20 | 2021-10-14 | Deutz Aktiengesellschaft | Brennkraftmaschine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3509439A1 (de) * | 1984-03-15 | 1985-09-26 | Honda Giken Kogyo K.K., Tokio/Tokyo | Lueftungssystem fuer ein kurbelgehaeuse und verfahren zur entfernung von oelnebel von dem gas des systems |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128470C2 (de) * | 1981-07-18 | 1983-05-11 | Bayerische Motoren Werke Ag, 8000 Muenchen | Zyklonölabscheider |
JPS6179813A (ja) * | 1984-09-26 | 1986-04-23 | Toyota Motor Corp | ブロ−バイガスのオイル分離装置 |
DE3713210A1 (de) | 1987-04-18 | 1988-11-03 | Porsche Ag | Entlueftungsvorrichtung mit integriertem oelabscheider |
US5069192A (en) * | 1989-10-24 | 1991-12-03 | Nissan Motor Company, Ltd. | Internal combustion engine with crankcase ventilation system |
DE4101203A1 (de) * | 1991-01-17 | 1992-07-23 | Bayerische Motoren Werke Ag | Kurbelgehaeuseentlueftung einer brennkraftmaschine |
JPH08260936A (ja) * | 1995-03-27 | 1996-10-08 | Kubota Corp | エンジンのブリーザ装置 |
-
1997
- 1997-04-11 DE DE19715061A patent/DE19715061C2/de not_active Expired - Fee Related
-
1998
- 1998-03-13 EP EP98104570A patent/EP0870908B1/de not_active Expired - Lifetime
- 1998-03-13 DE DE59802287T patent/DE59802287D1/de not_active Expired - Lifetime
- 1998-03-13 ES ES98104570T patent/ES2168695T3/es not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3509439A1 (de) * | 1984-03-15 | 1985-09-26 | Honda Giken Kogyo K.K., Tokio/Tokyo | Lueftungssystem fuer ein kurbelgehaeuse und verfahren zur entfernung von oelnebel von dem gas des systems |
Also Published As
Publication number | Publication date |
---|---|
EP0870908A1 (de) | 1998-10-14 |
DE19715061A1 (de) | 1998-10-15 |
DE59802287D1 (de) | 2002-01-17 |
DE19715061C2 (de) | 1999-01-21 |
ES2168695T3 (es) | 2002-06-16 |
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