EP1845238A2 - Cylinder head of combustion engine - Google Patents

Cylinder head of combustion engine Download PDF

Info

Publication number
EP1845238A2
EP1845238A2 EP07100955A EP07100955A EP1845238A2 EP 1845238 A2 EP1845238 A2 EP 1845238A2 EP 07100955 A EP07100955 A EP 07100955A EP 07100955 A EP07100955 A EP 07100955A EP 1845238 A2 EP1845238 A2 EP 1845238A2
Authority
EP
European Patent Office
Prior art keywords
cylinder head
camshaft
oil
channel
head cover
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
EP07100955A
Other languages
German (de)
French (fr)
Other versions
EP1845238A3 (en
EP1845238B1 (en
Inventor
Ulrich Hütter
Torsten Schellhase
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP1845238A2 publication Critical patent/EP1845238A2/en
Publication of EP1845238A3 publication Critical patent/EP1845238A3/en
Application granted granted Critical
Publication of EP1845238B1 publication Critical patent/EP1845238B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/04Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/02Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • F01L2001/0475Hollow camshafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • F01L2001/0476Camshaft bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00Crankcase ventilating or breathing
    • F01M13/04Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0422Separating oil and gas with a centrifuge device

Definitions

  • the invention relates to a cylinder head of an internal combustion engine with a camshaft bearing device arranged on the cylinder head.
  • the invention is therefore concerned with the problem of improving a generic cylinder head of an internal combustion engine, ie such a camshaft designed as an oil mist separator over the previously known prior art so that it can be made easier and thus more cost-effective.
  • the invention is based on the general idea to form a previously elaborately constructed and each composed of many parts oil collecting space and leading out of this channel for the purified oil from the gas now in a structurally simple manner by a specially designed corresponding cylinder head cover or a multi-channel device or to limit and in such a way that on the one hand the oil collection chamber is sealed to a valve chamber and that on the other hand, the Gasab technicallykanal is either integrated directly into the cylinder head cover or extends within this.
  • the cylinder head has a camshaft bearing device arranged thereon, in which a rotatably mounted and hollow camshaft is arranged, which forms a trigger for oily blow-by gases and is designed as an oil mist separator, in particular as a centrifugal oil mist separator.
  • the camshaft penetrates in the axial direction a, the bearing device containing valve space in which the individual cams of the camshaft are arranged.
  • the cylinder head cover or the multi-channel device is arranged on at least one axial end portion of the camshaft to form an axial gap, each of which is connected to the cavity of the camshaft substantially coaxially adjacent channel has, can be deducted by the oil mist purified blow-by gases due to a negative pressure from the camshaft.
  • the cylinder head cover or the multi-channel device is, as mentioned above, designed such that it at least partially encloses the oil separation space separated from the valve chamber of the internal combustion engine.
  • the gas exhaust duct purified blow-by gas
  • the cylinder head cover is in sealing contact, on the one hand, with the cylinder head and, on the other hand, with the camshaft or with the camshaft bearing device.
  • different cylinder head covers can be used, which are adapted to a particular type of internal combustion engine and take into account the respective specific features, while they all have in common that they seal off the oil separation space from the valve chamber.
  • the design of the cylinder head cover can also be possible, to be performed Orient maintenance so that it is conceivable that the cylinder head cover is formed so that a special easy access to the valve chamber or to the oil separation chamber when removing the cylinder head cover is given, whereby the ease of maintenance increases and maintenance costs can be reduced.
  • the cylinder head cover is made of plastic and may have a metallic insert in the region of seals.
  • the design of the cylinder head cover made of plastic allows a nearly freely selectable design with a high degree of creative freedom and can also be realized cost-effective.
  • a trained from plastic cylinder head cover also causes a noise attenuation, which is particularly beneficial to the noise emission of the engine.
  • the metallic insert provided in the region of the seal on the one hand ensures a reliable and therefore tight contact with the seal and, on the other hand, an increase in the service life of the cylinder head cover, since it is made more resistant to wear in the region of seals by the metallic insert.
  • the camshaft 3 has a plurality of cams 4, with which - not shown - valves of the engine are controlled.
  • the hollow design of the camshaft 3 allows a transport of oily blow-by gases in the cavity 5, whereby a crankcase can be vented.
  • the hollow camshaft 3 is designed as an oil mist separator, in particular as a centrifugal oil mist separator, and causes during operation of the internal combustion engine by the rotational movement of the camshaft 3 a centrifugal acceleration of the blow-by gases transported in the cavity 5.
  • the camshaft 3 penetrates a valve space 11 containing the camshaft bearing device 2 and protrudes axially out of the latter.
  • the cylinder head cover 13 is formed so that it seals the ⁇ labscheideraum 12 relative to the valve chamber 11 and thus forms a closed space from the valve chamber 11.
  • oil film 7 After reaching the axial gap 9 of the deposited on the inner wall 6 of the cavity 5 oil film 7 exits due to its radial acceleration in the ⁇ labscheideraum 12 and is collected or collected there. Since the oil separation 12th to the valve chamber 11 is completed toward prevails in this substantially the same negative pressure as in the cavity 5, so that an outflow of the oil film 7 from the axial gap 9 is not hindered.
  • the oil separation chamber 12 has, according to FIGS. 1 to 3, an oil sump 14 located in the cylinder head 1, in which the oil discharged from the axial gap 9 is first collected.
  • an oil sump 14 located in the cylinder head 1, in which the oil discharged from the axial gap 9 is first collected.
  • it may have a drain valve or a drain lock 15, which is opened when necessary.
  • the cylinder head cover 13 abuts sealingly on the one hand on the cylinder head 1 and on the other hand on the camshaft bearing device 2, sealing elements 16 being arranged in the respective contact surfaces.
  • an annular groove 17 is provided on the camshaft 3 according to FIG. 1, in which preferably a ring seal 18, for example a piston ring, is arranged.
  • the invention should encompass both abrasive and non-abrasive seals.
  • the adjusting device 19 is shown in FIG. 3 not only in the valve chamber 11 but It is also brought up to the last cam 4 of the camshaft 3 and may for example be connected directly to this.
  • the cylinder head cover 13 according to FIG. 1 not only covers the oil separation chamber 12, but also the valve space 11 and the camshaft bearing device 2.
  • the camshaft bearing device 2 is formed at least in two parts and has at least one upper portion 20 and lower bearing 21.
  • the bearings 21 may be fixedly or integrally connected to the cylinder head 1 or integrally connected to a separate component, namely a lower camshaft bearing device.
  • the upper portion 20 of the camshaft bearing device 2 is designed to be removable, so that easy access to the camshaft 3 is ensured.
  • a bulkhead 22 is provided between the valve chamber 11 and the oil collection chamber 12.
  • a lower part of the bulkhead wall 22 separates the oil separation chamber 12 from the valve chamber 11, which as a rule should not be assigned a bearing task for supporting the camshaft 3 according to the invention. Rather, a radial gap, not shown in FIG.
  • FIG. 2 a different embodiment of the cylinder head cover 13 is shown in comparison to FIG. 1, wherein this has a metallic insert 23 in the region of the annular seal 18, which increases the service life of the cylinder head cover 13 on the one hand and an improved sealing function of the annular seal 18 on the other hand allowed. Since the cylinder head covers 13 according to FIGS. 1 to 3 are all preferably made of plastic, such metallic inserts 23 in particular increase the wear resistance at the transition from the cylinder head cover 13 to the ring seal 18 or to the camshaft 3.
  • the cylinder head covers 13 according to FIGS. 2 and 3 have a different construction and each have an upper side 25 inclined to the axis 24 of the camshaft 3.
  • the principle of operation namely the separation of the valve chamber 11 from the oil separation chamber 12 is also achieved with the cylinder head covers 13 as shown in FIGS. 2 and 3.
  • the cylinder head cover 13 shown in FIG. 3 also includes the lower bulkhead wall 22, so that the bulkhead wall 22 is preferably an integral part of the cylinder head cover 13. It is also conceivable here that the bulkhead 22 according to FIG. 3 is not an integral part of the cylinder head cover 13, but is fastened separately to the cylinder head 1. Removal of the cylinder head cover 13 can thus take place only by a first successive pulling in the direction of the arrow 26 of the camshaft 3, while removing the cylinder head covers 13 according to Figs. 1 and 2 is also possible in the vertical direction. If the part of the bulkhead wall 22 lying below the camshaft 3 is designed as a separate component, a vertical lifting of the cylinder head cover 13 is also possible in the case of an embodiment according to FIG.
  • the arrow 26 indicates the direction of flow of the blow-by gases sucked from the crankcase.
  • the adjustment device 19 provided for adjustment or adjustment of the camshaft 3 is shown in FIG. 3 in the valve chamber 11 and not as in FIGS. 1 and 2 in the oil separation 12th
  • a section of a partition wall between the valve chamber 11 and the oil separation chamber 12 located above the camshaft 3 is formed by the cylinder head cover 13, while according to FIG. 1 a component of the upper section 20 of the camshaft bearing device 2 is provided.
  • the axial end of the camshaft 3, forming an axial gap 9, is adjoined by a multi-channel device 27, which has an inlet channel 10 coaxially adjoining the cavity 5 of the camshaft 3, through which cleaned blow-by gases are withdrawn from the camshaft 3 can be.
  • the multi-channel device 27 is designed so that it introduces separated oil into an oil collection chamber 12. In this case, the multi-channel device 27 abuts one end sealingly against the camshaft 3, by embracing the camshaft 3.
  • the multi-channel device 27 has an outlet channel, through which cleaned blow-by gases are discharged to the outside, that is to say out of the cylinder head cover 13.
  • the multi-channel device 27 has an oil return channel 29, which is in communication with the oil sump 12.
  • the multi-channel device 27 comprises a dip tube 28, which forms the outlet channel, wherein the dip tube 28 is connected at one end to the multi-channel device 27 and the other end to the cylinder head cover 13.
  • the dip tube 28 is inserted into the cylinder head cover 13 and connected via a further seal 16 'tight with this.

Landscapes

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

Abstract

The head has a camshaft bearing mechanism (2) arranged on the head, and a hollow camshaft (3) rotatably mounted in the bearing mechanism. The camshaft forms an outlet for blow-by gases laden with oil droplets out of a crankcase and acts as an oil droplet separator for separation of the oil content out of the gases. The camshaft passes through a valve space (11) containing the bearing mechanism, and a rocker cover (13) or a multichannel device has a metallic insert in an area of a ring gasket (18) e.g. piston ring.

Description

Die Erfindung betrifft einen Zylinderkopf eines Verbrennungsmotors mit einer am Zylinderkopf angeordneten Nockenwellenlagereinrichtung.The invention relates to a cylinder head of an internal combustion engine with a camshaft bearing device arranged on the cylinder head.

Bei bekannten Verbrennungsmotoren werden im Kurbelgehäuse sogenannte, ölnebelhaltige Blow-By-Gase in eine hohle Nockenwelle eingesaugt und in dieser zentrifugiert, so dass sich das in den Blow-By-Gasen gelöste Öl an einer Innenwand der Nockenwelle niederschlägt. Die dabei an der Innenwand der Nockenwelle abgeschiedenen Öltröpfchen bilden einen Ölfilm, der aufgrund der in der Nockenwelle herrschenden Gasströmung zu einem Ausgang transportiert wird. Nachteilig bei den bekannten Systemen ist, dass diese in dem Bereich, in dem der Öl- und Gasanteil beim Austritt aus der Nockenwelle voneinander getrennt abgeführt werden, bisher konstruktiv aufwendig und daher teuer ausgebildet sind.In known internal combustion engines, so-called, oil-mist-containing blow-by gases are sucked into a hollow camshaft in the crankcase and centrifuged therein, so that the oil dissolved in the blow-by gases is deposited on an inner wall of the camshaft. The thereby deposited on the inner wall of the camshaft oil droplets form an oil film, which is transported due to the prevailing in the camshaft gas flow to an exit. A disadvantage of the known systems that they are removed separately in the area in which the oil and gas content separated from each other when exiting the camshaft, have been structurally complex and therefore expensive.

Die Erfindung beschäftigt sich daher mit dem Problem, einen gattungsgemäßen Zylinderkopf eines Verbrennungsmotors, d.h. einen solchen mit einer als Ölnebelabscheider ausgebildeten Nockenwelle, gegenüber dem bisher bekannten Stand der Technik derart zu verbessern, dass dieser insgesamt einfacher und damit kostengünstiger hergestellt werden kann.The invention is therefore concerned with the problem of improving a generic cylinder head of an internal combustion engine, ie such a camshaft designed as an oil mist separator over the previously known prior art so that it can be made easier and thus more cost-effective.

Gelöst wird dieses Problem durch einen Zylinderkopf mit sämtlichen Merkmalen des Patentanspruchs 1.This problem is solved by a cylinder head having all the features of patent claim 1.

Vorteilhafte und zweckmäßige Ausgestaltungen sind Gegenstand der Unteransprüche.Advantageous and expedient refinements are the subject of the dependent claims.

Die Erfindung beruht auf dem allgemeinen Gedanken, einen bisher aufwendig konstruierten und jeweils aus vielen Einzelteilen zusammengesetzten Ölsammelraum sowie den aus diesem herausführenden Kanal für das vom Öl gereinigte Gas nunmehr in konstruktiv einfacher Weise durch eine speziell entsprechend gestaltete Zylinderkopfhaube bzw. eine Mehrkanaleinrichtung zu bilden bzw. zu begrenzen und zwar derart, dass einerseits der Ölsammelraum zu einem Ventilraum hin abgedichtet ist und dass andererseits der Gasabführkanal entweder direkt in die Zylinderkopfhaube integriert ist oder innerhalb dieser verläuft. Der Zylinderkopf weist eine daran angeordnete Nockenwellenlagereinrichtung auf, in welcher eine drehbar gelagerte und hohle Nockenwelle angeordnet ist, die einen Abzug für ölhaltige Blow-by-Gase bildet und dabei als Ölnebelabscheider, insbesondere als Zentrifugal-Ölnebelabscheider, ausgebildet ist. Die Nockenwelle durchdringt in axialer Richtung einen, die Lagereinrichtung enthaltenden Ventilraum, in welchem die einzelnen Nocken der Nockenwelle angeordnet sind. Dabei ist an mindestens einem axialen Endbereich der Nockenwelle unter Bildung eines Axialspaltes die Zylinderkopfhaube oder die Mehrkanaleinrichtung angeordnet, welche jeweils einen an den Hohlraum der Nockenwelle im wesentlichen koaxial anschließenden Kanal aufweist, durch den vom Ölnebel gereinigte Blow-by-Gase aufgrund eines Unterdruckes aus der Nockenwelle abgezogen werden können.The invention is based on the general idea to form a previously elaborately constructed and each composed of many parts oil collecting space and leading out of this channel for the purified oil from the gas now in a structurally simple manner by a specially designed corresponding cylinder head cover or a multi-channel device or to limit and in such a way that on the one hand the oil collection chamber is sealed to a valve chamber and that on the other hand, the Gasabführkanal is either integrated directly into the cylinder head cover or extends within this. The cylinder head has a camshaft bearing device arranged thereon, in which a rotatably mounted and hollow camshaft is arranged, which forms a trigger for oily blow-by gases and is designed as an oil mist separator, in particular as a centrifugal oil mist separator. The camshaft penetrates in the axial direction a, the bearing device containing valve space in which the individual cams of the camshaft are arranged. In this case, the cylinder head cover or the multi-channel device is arranged on at least one axial end portion of the camshaft to form an axial gap, each of which is connected to the cavity of the camshaft substantially coaxially adjacent channel has, can be deducted by the oil mist purified blow-by gases due to a negative pressure from the camshaft.

Die Zylinderkopfhaube oder die Mehrkanaleinrichtung ist wie oben erwähnt so ausgebildet, dass sie den vom Ventilraum des Verbrennungsmotors abgetrennten Ölabscheideraum zumindest teilweise umschließt. Dies bietet den großen Vorteil, dass die Zylinderkopfhaube oder die Mehrkanaleinrichtung nunmehr zur Bildung des Ölabscheideraums dient, wodurch bisher benötigte separate Bauteile zur Begrenzung des Ölabscheideraums entfallen können, wodurch sich die Teilevielfalt reduzieren und dadurch der Verbrennungsmotor bzw. der Zylinderkopf insgesamt einfacher und kostengünstiger herstellen lassen. Auch der Gasabzugskanal (gereinigtes Blow-by-Gas) kann direkt in die Zylinderkopfhaube eingeformt sein oder zumindest innerhalb dieser verlaufen.The cylinder head cover or the multi-channel device is, as mentioned above, designed such that it at least partially encloses the oil separation space separated from the valve chamber of the internal combustion engine. This offers the great advantage that the cylinder head cover or the multi-channel device now serves to form the oil separation, which previously required separate components to limit the Ölabscheideraums can be omitted, thereby reducing the variety of parts and thereby can make the engine or the cylinder head as a whole easier and cheaper , Also, the gas exhaust duct (purified blow-by gas) can be molded directly into the cylinder head cover or at least run within it.

Gemäß einer bevorzugten Ausführungsform der erfindungsgemä-ßen Lösung liegt die Zylinderkopfhaube einerseits am Zylinderkopf und andererseits an der Nockenwelle oder an der Nockenwellenlagereinrichtung dichtend an. Anhand dieser Formulierung ist schon deutlich erkennbar, dass unterschiedliche Zylinderkopfhauben zum Einsatz kommen können, welche an einen jeweiligen Verbrennungsmotorentyp angepasst sind und die jeweiligen, spezifischen Besonderheiten berücksichtigen, während ihnen allen gemeinsam ist, dass sie den Ölabscheideraum vom Ventilraum dichtend abtrennen. Die Ausbildung der Zylinderkopfhaube kann sich dabei auch an möglichen, durchzuführenden Wartungsarbeiten orientieren, so dass denkbar ist, das die Zylinderkopfhaube so ausgebildet ist, dass ein besonderes einfacher Zugang zum Ventilraum bzw. zum Ölabscheideraum beim Abnehmen der Zylinderkopfhaube gegeben ist, wodurch die Wartungsfreundlichkeit erhöht und die Wartungskosten gesenkt werden können.In accordance with a preferred embodiment of the solution according to the invention, the cylinder head cover is in sealing contact, on the one hand, with the cylinder head and, on the other hand, with the camshaft or with the camshaft bearing device. It is already clear from this formulation that different cylinder head covers can be used, which are adapted to a particular type of internal combustion engine and take into account the respective specific features, while they all have in common that they seal off the oil separation space from the valve chamber. The design of the cylinder head cover can also be possible, to be performed Orient maintenance so that it is conceivable that the cylinder head cover is formed so that a special easy access to the valve chamber or to the oil separation chamber when removing the cylinder head cover is given, whereby the ease of maintenance increases and maintenance costs can be reduced.

Zweckmäßig ist die Zylinderkopfhaube aus Kunststoff ausgebildet und kann im Bereich von Dichtungen einen metallischen Einsatz aufweisen. Die Ausbildung der Zylinderkopfhaube aus Kunststoff ermöglicht eine nahezu frei wählbare Formgebung bei gleichzeitig hohem gestalterischen Spielraum und lässt sich darüber hinaus kostengünstig realisieren. Eine aus Kunststoff ausgebildete Zylinderkopfhaube bewirkt zudem eine Geräuschdämpfung, was sich insbesondere auf die Lärmemission des Verbrennungsmotors günstig auswirkt. Der im Bereich der Dichtung vorgesehene metallische Einsatz gewährleistet einerseits einen zuverlässigen und dadurch dichten Kontakt zur Dichtung und andererseits eine Steigerung der Lebensdauer der Zylinderkopfhaube, da diese im Bereich von Dichtungen durch den metallischen Einsatz verschleißfester ausgebildet ist.Suitably, the cylinder head cover is made of plastic and may have a metallic insert in the region of seals. The design of the cylinder head cover made of plastic allows a nearly freely selectable design with a high degree of creative freedom and can also be realized cost-effective. A trained from plastic cylinder head cover also causes a noise attenuation, which is particularly beneficial to the noise emission of the engine. The metallic insert provided in the region of the seal on the one hand ensures a reliable and therefore tight contact with the seal and, on the other hand, an increase in the service life of the cylinder head cover, since it is made more resistant to wear in the region of seals by the metallic insert.

Vorteilhafte, nachstehend näher erläuterte Ausführungsbeispiele sind in den Zeichnungen jeweils schematisch dargestellt.Advantageous, explained in more detail below embodiments are shown schematically in the drawings.

Dabei zeigen, jeweils schematisch,

Fig. 1
einen Längsschnitt durch einen Zylinderkopf im Bereich eines axialen Endbereiches einer Nockenwelle,
Fig. 2
eine Darstellung wie in Fig. 1, jedoch bei einer anderen Ausführungsform einer Zylinderkopfhaube,
Fig. 3
eine Darstellung wie in Fig. 2, jedoch mit einer anderen Nockenwelle und einer anderen Zylinderkopfhaube,
Fig. 4
eine Detailansicht eines axialen Nockenwellenendes mit einer Mehrkanaleinrichtung.
Show, in each case schematically,
Fig. 1
a longitudinal section through a cylinder head in the region of an axial end portion of a camshaft,
Fig. 2
3 shows a representation as in FIG. 1, but in another embodiment of a cylinder head cover,
Fig. 3
a representation as in Fig. 2, but with a different camshaft and another cylinder head cover,
Fig. 4
a detailed view of an axial camshaft end with a multi-channel device.

Entsprechend Fig. 1 weist ein teilweise dargestellter Zylinderkopf 1 eines im übrigen nicht dargestellten Verbrennungsmotors eine Nockenwellenlagereinrichtung 2 sowie eine darin drehbar gelagerte, hohle Nockenwelle 3 auf. Die Nockenwelle 3 besitzt mehrere Nocken 4, mit welchen - nicht dargestellte - Ventile des Verbrennungsmotors gesteuert werden. Die hohle Ausbildung der Nockenwelle 3 erlaubt einen Transport von ölhaltigen Blow-by-Gasen in deren Hohlraum 5, wodurch ein Kurbelgehäuse entlüftet werden kann. Dabei ist die hohle Nockenwelle 3 als Ölnebelabscheider, insbesondere als Zentrifugal-Ölnebelabscheider, ausgebildet und bewirkt beim Betrieb des Verbrennungsmotors durch die Drehbewegung der Nockenwelle 3 eine Zentrifugalbeschleunigung der im Hohlraum 5 transportierten Blow-by-Gase. Hierbei werden in den Blow-by-Gasen aerosol gelöste Öltröpfchen radial nach außen beschleunigt, wobei sie sich an einer Innenwand 6 des Hohlraumes 5 in Form eines Ölfilmes 7 niederschlagen. Aufgrund der Strömung der Blow-by-Gase im Hohlraum 5 der Nockenwelle 3 wird der Ölfilm 7 gemäß Fig. 1 in Richtung eines axialen Endes 8 der Nockenwelle 3 transportiert, an welchen sich unter Bildung eines Axialspaltes 9 eine Zylinderkopfhaube 13 anschließt, die einen an den Hohlraum 5 der Nockenwelle 3 koaxial anschließenden Kanal 10 besitzt, durch welchen von Ölnebel gereinigte Blow-by-Gase aus der Nockenwelle 3 abgezogen werden können. Der Transport der Blow-by-Gase im Hohlraum 5 bzw. im Kanal 10 erfolgt dabei vorzugsweise durch die Erzeugung eines Unterdruckes.1, a partially illustrated cylinder head 1 of a combustion engine, not shown otherwise, a camshaft bearing device 2 and a rotatably mounted therein, hollow camshaft 3. The camshaft 3 has a plurality of cams 4, with which - not shown - valves of the engine are controlled. The hollow design of the camshaft 3 allows a transport of oily blow-by gases in the cavity 5, whereby a crankcase can be vented. In this case, the hollow camshaft 3 is designed as an oil mist separator, in particular as a centrifugal oil mist separator, and causes during operation of the internal combustion engine by the rotational movement of the camshaft 3 a centrifugal acceleration of the blow-by gases transported in the cavity 5. In this case, aerosol dissolved oil droplets are accelerated radially outward in the blow-by gases, whereby they precipitate on an inner wall 6 of the cavity 5 in the form of an oil film 7. Due to the flow of blow-by gases in the cavity 5 of the camshaft 3, the oil film 7 is transported as shown in FIG. 1 in the direction of an axial end 8 of the camshaft 3, which is followed by the formation of an axial gap 9, a cylinder head cover 13, the one on has the cavity 5 of the camshaft 3 coaxially adjoining channel 10 through which cleaned by oil mist blow-by gases from the camshaft 3 can be deducted. The transport of the blow-by gases in the cavity 5 or in the channel 10 is preferably carried out by the generation of a negative pressure.

Wie in Fig. 1 dargestellt, durchdringt die Nockenwelle 3 einen, die Nockenwellenlagereinrichtung 2 enthaltenden Ventilraum 11 und ragt axial endseitig aus diesem heraus. Der axiale Endbereich 8 der Nockenwelle 3, welcher nicht im Ventilraum 11 angeordnet ist, ragt dabei in einen Ölabscheideraum 12, welcher im wesentlichen vom Zylinderkopf 1 einerseits und der Zylinderkopfhaube 13 andererseits begrenzt ist. Dabei ist die Zylinderkopfhaube 13 so ausgebildet, dass sie den Ölabscheideraum 12 gegenüber dem Ventilraum 11 abdichtet und somit einen vom Ventilraum 11 abgeschlossenen Raum bildet.As shown in FIG. 1, the camshaft 3 penetrates a valve space 11 containing the camshaft bearing device 2 and protrudes axially out of the latter. The axial end portion 8 of the camshaft 3, which is not arranged in the valve chamber 11, protrudes into an oil separation chamber 12 which is essentially bounded on the one hand by the cylinder head 1 and the cylinder head cover 13 on the other. In this case, the cylinder head cover 13 is formed so that it seals the Ölabscheideraum 12 relative to the valve chamber 11 and thus forms a closed space from the valve chamber 11.

Nach Erreichen des Axialspaltes 9 tritt der an der Innenwand 6 des Hohlraumes 5 abgelagerte Ölfilm 7 aufgrund seiner radialen Beschleunigung in den Ölabscheideraum 12 aus und wird dort aufgefangen bzw. gesammelt. Da der Ölabscheideraum 12 zum Ventilraum 11 hin abgeschlossen ist, herrscht in diesem im wesentlichen der gleiche Unterdruck wie im Hohlraum 5, so dass ein Ausfließen des Ölfilmes 7 aus dem Axialspalt 9 nicht behindert wird.After reaching the axial gap 9 of the deposited on the inner wall 6 of the cavity 5 oil film 7 exits due to its radial acceleration in the Ölabscheideraum 12 and is collected or collected there. Since the oil separation 12th to the valve chamber 11 is completed toward prevails in this substantially the same negative pressure as in the cavity 5, so that an outflow of the oil film 7 from the axial gap 9 is not hindered.

Der Ölabscheideraum 12 weist gemäß den Fig. 1 bis 3 einen im Zylinderkopf 1 gelegenen Ölsumpf 14 auf, in welchem das aus dem Axialspalt 9 ausgetretene Öl zunächst gesammelt wird. Zum Ablassen bzw. Rückführen des im Ölsumpf 14 gesammelten Öls kann dieser ein Ablassventil bzw. eine Ablasssperre 15 aufweisen, welche bei Bedarf geöffnet wird.The oil separation chamber 12 has, according to FIGS. 1 to 3, an oil sump 14 located in the cylinder head 1, in which the oil discharged from the axial gap 9 is first collected. For draining or returning the oil collected in the oil sump 14, it may have a drain valve or a drain lock 15, which is opened when necessary.

Wie in Fig. 1 weiter dargestellt, liegt die Zylinderkopfhaube 13 einerseits am Zylinderkopf 1 und andererseits an der Nockenwellenlagereinrichtung 2 dichtend an, wobei in den jeweiligen Berührungsflächen Dichtelemente 16 angeordnet sind. Um den Ölabscheideraum 12 gegenüber dem Ventilraum 11 abzudichten, ist an der Nockenwelle 3 gemäß Fig. 1 eine Ringnut 17 vorgesehen, in welcher vorzugsweise eine Ringdichtung 18, beispielsweise ein Kolbenring, angeordnet ist. Generell sollen dabei von der Erfindung sowohl schleifende als auch nicht schleifende Dichtungen umfasst werden.As further illustrated in FIG. 1, the cylinder head cover 13 abuts sealingly on the one hand on the cylinder head 1 and on the other hand on the camshaft bearing device 2, sealing elements 16 being arranged in the respective contact surfaces. In order to seal the oil separation chamber 12 with respect to the valve space 11, an annular groove 17 is provided on the camshaft 3 according to FIG. 1, in which preferably a ring seal 18, for example a piston ring, is arranged. In general, the invention should encompass both abrasive and non-abrasive seals.

Zum Ausrichten der Nockenwelle 3 weist diese eine gemäß Fig. 1 im Ölabscheideraum 12 gelegene Einstelleinrichtung 19, hier einen Sechskant auf, welcher jedoch bei dieser sowie bei anderen Ausführungsformen (vgl. Fig. 3) auch im Ventilraum 11 angeordnet sein kann. Die Einstelleinrichtung 19 liegt dabei gemäß Fig. 3 nicht nur im Ventilraum 11 sondern sie ist auch an den letzten Nocken 4 der Nockenwelle 3 herangerückt und kann beispielsweise mit diesem direkt verbunden sein. Insgesamt überdeckt die Zylinderkopfhaube 13 gemäß der Fig. 1 nicht nur den Ölabscheideraum 12, sondern auch den Ventilraum 11 sowie die Nockenwellenlagereinrichtung 2.For aligning the camshaft 3, this has an adjustment device 19 located in the oil separation chamber 12 according to FIG. 1, here a hexagon, which, however, can also be arranged in the valve space 11 in this embodiment as well as in other embodiments (see FIG. The adjusting device 19 is shown in FIG. 3 not only in the valve chamber 11 but It is also brought up to the last cam 4 of the camshaft 3 and may for example be connected directly to this. Overall, the cylinder head cover 13 according to FIG. 1 not only covers the oil separation chamber 12, but also the valve space 11 and the camshaft bearing device 2.

Des weiteren ist die Nockenwellenlagereinrichtung 2 zumindest zweiteilig ausgebildet und weist zumindest einen oberen Abschnitt 20 sowie untere Lager 21 auf. Dabei können die Lager 21 fest oder einstückig mit dem Zylinderkopf 1 verbunden oder einteilig zu einem separaten Bauteil, nämlich einer unteren Nockenwellenlagereinrichtung verbunden sein. Der obere Abschnitt 20 der Nockenwellenlagereinrichtung 2 ist abnehmbar ausgebildet, so dass ein einfacher Zugang zur Nockenwelle 3 gewährleistet ist. Zwischen dem Ventilraum 11 und dem Ölsammelraum 12 ist eine Schottwand 22 vorgesehen. Im unterhalb der Nockenwelle 3 gelegenen Bereich trennt ein unterer Teil der Schottwand 22 den Ölabscheideraum 12 vom Ventilraum 11, welcher in der Regel gemäß der Erfindung keine Lageraufgabe zur Lagerung der Nockenwelle 3 zufallen soll. Vielmehr ist hierbei in der Regel zwischen der Schottwand 22 und der Nockenwelle 3 ein in der Fig. 1 nicht dargestellter Radialspalt vorgesehen, welcher eine direkte Berührung zwischen Schottwand 22 und Nockenwelle 3 meist ausschließt. Zumindest eine Berührung findet jedoch über die Ringdichtung 18 statt, welche einerseits in Kontakt mit der Nockenwelle 3 und andererseits in Kontakt mit der Schottwand 22 steht.Furthermore, the camshaft bearing device 2 is formed at least in two parts and has at least one upper portion 20 and lower bearing 21. The bearings 21 may be fixedly or integrally connected to the cylinder head 1 or integrally connected to a separate component, namely a lower camshaft bearing device. The upper portion 20 of the camshaft bearing device 2 is designed to be removable, so that easy access to the camshaft 3 is ensured. Between the valve chamber 11 and the oil collection chamber 12, a bulkhead 22 is provided. In the area located below the camshaft 3, a lower part of the bulkhead wall 22 separates the oil separation chamber 12 from the valve chamber 11, which as a rule should not be assigned a bearing task for supporting the camshaft 3 according to the invention. Rather, a radial gap, not shown in FIG. 1, is generally provided between the bulkhead 22 and the camshaft 3, which usually excludes direct contact between bulkhead 22 and camshaft 3. However, at least one contact takes place via the ring seal 18, which is in contact with the camshaft 3 on the one hand and in contact with the bulkhead 22 on the other hand.

Gemäß Fig. 2 ist eine im Vergleich zur Fig. 1 andere Ausführungsform der Zylinderkopfhaube 13 dargestellt, wobei diese im Bereich der Ringdichtung 18 einen metallischen Einsatz 23 aufweist, welcher zum Einen die Lebensdauer der Zylinderkopfhaube 13 erhöht und zum anderen eine verbesserte Dichtfunktion der Ringdichtung 18 erlaubt. Da die Zylinderkopfhauben 13 gemäß den Fig. 1 bis 3 alle vorzugsweise aus Kunststoff ausgebildet sind, erhöhen derartige metallische Einsätze 23 insbesondere die Verschleißfestigkeit am Übergang von Zylinderkopfhaube 13 zur Ringdichtung 18 bzw. zur Nockenwelle 3.2, a different embodiment of the cylinder head cover 13 is shown in comparison to FIG. 1, wherein this has a metallic insert 23 in the region of the annular seal 18, which increases the service life of the cylinder head cover 13 on the one hand and an improved sealing function of the annular seal 18 on the other hand allowed. Since the cylinder head covers 13 according to FIGS. 1 to 3 are all preferably made of plastic, such metallic inserts 23 in particular increase the wear resistance at the transition from the cylinder head cover 13 to the ring seal 18 or to the camshaft 3.

Im Unterschied zu Fig. 1 sind die Zylinderkopfhauben 13 gemäß Fig. 2 und 3 anders aufgebaut und weisen jeweils eine zur Achse 24 der Nockenwelle 3 geneigte Oberseite 25 auf. Das Funktionsprinzip, nämlich die Trennung des Ventilraums 11 vom Ölabscheideraum 12 wird jedoch auch mit den Zylinderkopfhauben 13 gemäß den Fig. 2 und 3 erreicht.In contrast to FIG. 1, the cylinder head covers 13 according to FIGS. 2 and 3 have a different construction and each have an upper side 25 inclined to the axis 24 of the camshaft 3. However, the principle of operation, namely the separation of the valve chamber 11 from the oil separation chamber 12 is also achieved with the cylinder head covers 13 as shown in FIGS. 2 and 3.

Im Unterschied zu Fig. 2 umfasst die in Fig. 3 dargestellte Zylinderkopfhaube 13 auch die untere Schottwand 22, so dass die Schottwand 22 vorzugsweise ein integraler Bestandteil der Zylinderkopfhaube 13 ist. Denkbar ist hierbei auch, dass die Schottwand 22 gemäß der Fig. 3 kein integraler Bestandteil der Zylinderkopfhaube 13 ist, sondern separat am Zylinderkopf 1 befestigt ist. Ein Entfernen der Zylinderkopfhaube 13 kann somit lediglich durch ein zunächst erfolgendes Abziehen in Richtung des Pfeiles 26 von der Nockenwelle 3 erfolgen, während ein Entfernen der Zylinderkopfhauben 13 gemäß den Fig. 1 und 2 auch in vertikaler Richtung möglich ist. Sofern der unterhalb der Nockenwelle 3 liegende Teil der Schottwand 22 als separates Bauteil ausgebildet ist, ist auch bei einer Ausgestaltung gemäß Fig. 3 ein vertikales Abheben der Zylinderkopfhaube 13 möglich. Der Pfeil 26 gibt dabei gleichzeitig die Strömungsrichtung der aus dem Kurbelgehäuse angesaugten Blow-by-Gase an. Die zur Justierung bzw. Einstellung der Nockenwelle 3 vorgesehene Einstelleinrichtung 19 liegt gemäß Fig. 3 im Ventilraum 11 und nicht wie in den Fig. 1 und 2 im Ölabscheideraum 12.In contrast to FIG. 2, the cylinder head cover 13 shown in FIG. 3 also includes the lower bulkhead wall 22, so that the bulkhead wall 22 is preferably an integral part of the cylinder head cover 13. It is also conceivable here that the bulkhead 22 according to FIG. 3 is not an integral part of the cylinder head cover 13, but is fastened separately to the cylinder head 1. Removal of the cylinder head cover 13 can thus take place only by a first successive pulling in the direction of the arrow 26 of the camshaft 3, while removing the cylinder head covers 13 according to Figs. 1 and 2 is also possible in the vertical direction. If the part of the bulkhead wall 22 lying below the camshaft 3 is designed as a separate component, a vertical lifting of the cylinder head cover 13 is also possible in the case of an embodiment according to FIG. At the same time, the arrow 26 indicates the direction of flow of the blow-by gases sucked from the crankcase. The adjustment device 19 provided for adjustment or adjustment of the camshaft 3 is shown in FIG. 3 in the valve chamber 11 and not as in FIGS. 1 and 2 in the oil separation 12th

Gemäß der Fig. 2 wird ein oberhalb der Nockenwelle 3 liegender Abschnitt einer Trennwand zwischen Ventilraum 11 und Ölabscheideraum 12 von der Zylinderkopfhaube 13 gebildet, während hierzu gemäß der Fig. 1 ein Bestandteil des oberen Abschnitts 20 der Nockenwellenlagereinrichtung 2 vorgesehen ist.According to FIG. 2, a section of a partition wall between the valve chamber 11 and the oil separation chamber 12 located above the camshaft 3 is formed by the cylinder head cover 13, while according to FIG. 1 a component of the upper section 20 of the camshaft bearing device 2 is provided.

Gemäß der Fig. 4 schließt sich axial endseitig der Nockenwelle 3 unter Bildung eines Axialspaltes 9 eine Mehrkanaleinrichtung 27 an, die einen an den Hohlraum 5 der Nockenwelle 3 koaxial anschließenden Einlasskanal 10 aufweist, durch welchen gereinigte Blow-by-Gase aus der Nockenwelle 3 abgezogen werden können. Die Mehrkanaleinrichtung 27 ist dabei so ausgebildet, dass sie abgeschiedenes Öl in einen Ölsammelraum 12 einleitet. Dabei liegt die Mehrkanaleinrichtung 27 einenends dichtend an der Nockenwelle 3 an, indem sie die Nockenwelle 3 umgreift.According to FIG. 4, the axial end of the camshaft 3, forming an axial gap 9, is adjoined by a multi-channel device 27, which has an inlet channel 10 coaxially adjoining the cavity 5 of the camshaft 3, through which cleaned blow-by gases are withdrawn from the camshaft 3 can be. The multi-channel device 27 is designed so that it introduces separated oil into an oil collection chamber 12. In this case, the multi-channel device 27 abuts one end sealingly against the camshaft 3, by embracing the camshaft 3.

Wie in Fig. 4 weiter gezeigt, weist die Mehrkanaleinrichtung 27 einen Auslasskanal auf, durch welchen gereinigte Blow-by-Gase nach außen, das heißt aus der Zylinderkopfhaube 13 heraus, abgeleitet werden. Darüber hinaus weist die Mehrkanaleinrichtung 27 einen Ölrücklaufkanal 29 auf, der mit dem Ölsumpf 12 in Verbindung steht.As further shown in FIG. 4, the multi-channel device 27 has an outlet channel, through which cleaned blow-by gases are discharged to the outside, that is to say out of the cylinder head cover 13. In addition, the multi-channel device 27 has an oil return channel 29, which is in communication with the oil sump 12.

Des weiteren umfasst die Mehrkanaleinrichtung 27 ein Tauchrohr 28, das den Auslasskanal bildet, wobei das Tauchrohr 28 einenends mit der Mehrkanaleinrichtung 27 und anderenends mit der Zylinderkopfhaube 13 verbunden ist. Das Tauchrohr 28 ist dabei in die Zylinderkopfhaube 13 eingesteckt und über eine weitere Dichtung 16' dicht mit dieser verbunden.Furthermore, the multi-channel device 27 comprises a dip tube 28, which forms the outlet channel, wherein the dip tube 28 is connected at one end to the multi-channel device 27 and the other end to the cylinder head cover 13. The dip tube 28 is inserted into the cylinder head cover 13 and connected via a further seal 16 'tight with this.

Alle in der Beschreibung und in den nachfolgenden Ansprüchen dargestellten Merkmale können sowohl einzeln als auch in beliebiger Form miteinander kombiniert erfindungswesentlich sein.All features described in the description and in the following claims can be essential to the invention, both individually and in any desired form.

Claims (10)

Zylinderkopf (1) eines Verbrennungsmotors mit - einer am Zylinderkopf (1) angeordneten Nockenwellenlagereinrichtung (2), - einer in der Nockenwellenlagereinrichtung (2) drehbar gelagerten, hohlen Nockenwelle (3), die einen Abzug für ölnebelhaltige Blow-by-Gase aus dem Kurbelgehäuse bildet und zur Abscheidung des Ölanteils aus diesen Gasen als Ölnebelabscheider ausgebildet ist, - wobei die Nockenwelle (3) einen, die Nockenwellenlagereinrichtung (2) enthaltenden Ventilraum (11) durchdringt, - wobei sich axial mindestens einenends an der Nockenwelle (3) unter Bildung eines Axialspaltes (9) eine Zylinderkopfhaube (13) oder eine Mehrkanaleinrichtung (27) anschließt, die jeweils einen an den Hohlraum (5) der Nockenwelle (3) koaxial anschließenden Kanal (10) aufweist, durch welchen gereinigte Blow-by-Gase aus der Nockenwelle (3) abgezogen werden können, - wobei die Zylinderkopfhaube (13) oder die Mehrkanaleinrichtung (27) so ausgebildet sind, dass sie entweder einen zum Ventilraum (11) hin abgedichteten Ölsammelraum (12) bilden oder abgeschiedenes Öl in einen derartigen Ölsammelraum (12) einleiten. Cylinder head (1) of an internal combustion engine with a camshaft bearing device (2) arranged on the cylinder head (1), - One in the camshaft bearing device (2) rotatably mounted, hollow camshaft (3) which forms a trigger for oil mist-containing blow-by gases from the crankcase and is designed to separate the oil content of these gases as Ölnebelabscheider wherein the camshaft (3) penetrates a valve space (11) containing the camshaft bearing device (2), - wherein axially at least one end of the camshaft (3) to form an axial gap (9) a cylinder head cover (13) or a multi-channel device (27) connects, each one to the cavity (5) of the camshaft (3) coaxial subsequent channel ( 10) through which purified blow-by gases can be withdrawn from the camshaft (3), - Wherein the cylinder head cover (13) or the multi-channel device (27) are formed so that they either to the valve chamber (11) towards sealed oil collecting space (12) or introduce separated oil into such an oil collecting space (12). Zylinderkopf nach Anspruch 1,
gekennzeichnet durch die Merkmale, - der Ölabscheideraum (12) weist einen im Zylinderkopf (1) gelegenen Ölsumpf (14) auf, - der Ölsumpf (14) weist ein Ablassventil (15) bzw. eine - sperre auf.
Cylinder head according to claim 1,
characterized by the features the oil separation chamber (12) has an oil sump (14) located in the cylinder head (1), - The oil sump (14) has a drain valve (15) or a - lock on.
Zylinderkopf nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass der Axialspalt (9) zwischen der Nockenwelle (3) und der Zylinderkopfhaube (13) so ausgebildet ist, dass beim Betrieb des Verbrennungsmotors in der als Ölabscheider ausgebildeten Nockenwelle (3) abgeschiedenes Öl in den Ölabscheideraum (12) austreten kann.
Cylinder head according to claim 1 or 2,
characterized,
in that the axial gap (9) between the camshaft (3) and the cylinder head cover (13) is designed in such a way that oil deposited in the oil separator camshaft (3) can escape into the oil separation chamber (12) during operation of the internal combustion engine.
Zylinderkopf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Zylinderkopfhaube (13) einerseits am Zylinderkopf (1) und andererseits an der Nockenwelle (3) oder an der Nockenwellenlagereinrichtung (2) dichtend anliegt.
Cylinder head according to one of the preceding claims,
characterized,
in that the cylinder head cover (13) rests sealingly on the one hand on the cylinder head (1) and on the other hand on the camshaft (3) or on the camshaft bearing device (2).
Zylinderkopf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Nockenwelle (3) eine Einstelleinrichtung (19) zum Ausrichten der Nockenwelle (3) aufweist, die im Ölabscheideraum (12) oder im Ventilraum (11) angeordnet ist.
Cylinder head according to one of the preceding claims,
characterized,
in that the camshaft (3) has adjusting means (19) for aligning the camshaft (3) arranged in the oil separation space (12) or in the valve space (11).
Zylinderkopf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass an der Zylinderkopfhaube (13) eine Dichtung (18) vorgesehen ist, die an der Nockenwelle (3) anliegt und die den Ventilraum (11) gegenüber dem Ölabscheideraum (12) abdichtet.
Cylinder head according to one of the preceding claims,
characterized,
in that a seal (18) is provided on the cylinder head cover (13) which bears against the camshaft (3) and seals the valve space (11) with respect to the oil separation space (12).
Zylinderkopf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Zylinderkopfhaube (13) aus Kunststoff ausgebildet ist und im Bereich der Dichtung (18) einen metallischen Einsatz (23) aufweist.
Cylinder head according to one of the preceding claims,
characterized,
in that the cylinder head cover (13) is formed from plastic and has a metallic insert (23) in the region of the seal (18).
Zylinderkopf nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass die Mehrkanaleinrichtung (27) einenends dichtend an der Nockenwelle (3) anliegt.
Cylinder head according to claim 1 or 2,
characterized,
that the multi-channel means (27) at one end sealingly engages the camshaft (3).
Zylinderkopf nach einem der Ansprüche 1, 2 oder 8,
dadurch gekennzeichnet,
dass die Mehrkanaleinrichtung (27) einen Einlasskanal aufweist, der mit dem Hohlraum (5) der Nockenwelle (3) verbunden ist, und einen Auslasskanal, durch welchen gereinigte Blow-by-Gase abgeleitet werden, und einen Ölrücklaufkanal (29), der mit dem Ölsumpf (14) in Verbindung steht oder diesen bildet.
Cylinder head according to one of claims 1, 2 or 8,
characterized,
in that the multichannel device (27) has an inlet channel which is connected to the cavity (5) of the camshaft (3) and an outlet channel through which purified blow-by gases are discharged, and an oil return channel (29) which communicates with the Oil sump (14) communicates with or forms this.
Zylinderkopf nach Anspruch 9,
dadurch gekennzeichnet,
dass die Mehrkanaleinrichtung (27) ein Tauchrohr (28) umfasst, welches den Auslasskanal bildet, wobei das Tauchrohr (28) einenends mit der Mehrkanaleinrichtung (27) und anderenends mit der Zylinderkopfhaube (13) verbunden ist.
Cylinder head according to claim 9,
characterized,
in that the multi-channel device (27) comprises a dip tube (28) which forms the outlet channel, wherein the dip tube (28) is connected at one end to the multi-channel device (27) and at the other end to the cylinder head cover (13).
EP07100955A 2006-03-20 2007-01-23 Cylinder head of combustion engine Expired - Fee Related EP1845238B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006012611A DE102006012611A1 (en) 2006-03-20 2006-03-20 Cylinder head of an internal combustion engine

Publications (3)

Publication Number Publication Date
EP1845238A2 true EP1845238A2 (en) 2007-10-17
EP1845238A3 EP1845238A3 (en) 2009-10-21
EP1845238B1 EP1845238B1 (en) 2012-12-19

Family

ID=38438191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07100955A Expired - Fee Related EP1845238B1 (en) 2006-03-20 2007-01-23 Cylinder head of combustion engine

Country Status (3)

Country Link
US (1) US7434572B2 (en)
EP (1) EP1845238B1 (en)
DE (1) DE102006012611A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3033499B1 (en) 2013-08-13 2017-05-10 Thyssenkrupp Presta Teccenter Ag Camshaft assembly and camshaft arrangement
WO2018099885A1 (en) * 2016-12-02 2018-06-07 Thyssenkrupp Presta Teccenter Ag Method for mounting at least one sealing ring on a camshaft in a bearing line of an internal combustion engine, and camshaft having at least one sealing ring mounted in such a way
WO2019002322A1 (en) * 2017-06-30 2019-01-03 Thyssenkrupp Presta Teccenter Ag Conveyor and compressor element, hollow shaft, combustion engine, and method for purifying blowby gases

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006024817A1 (en) * 2006-05-29 2007-12-06 Mahle International Gmbh Cylinder head of an internal combustion engine
JP4884279B2 (en) * 2007-03-30 2012-02-29 本田技研工業株式会社 Internal combustion engine having a breather device
US20090272360A1 (en) * 2007-10-03 2009-11-05 Industrial Technology Research Institute Lubrication device of four-stroke engines
FR2933626B1 (en) * 2008-07-10 2011-01-21 Filtrauto DEVICE WITH ROTOR WITH MEDIA COALESCER FOR SEPARATING THE OIL FROM THE CASING GASES OF AN INTERNAL COMBUSTION ENGINE.
US8166939B2 (en) * 2009-03-05 2012-05-01 GM Global Technology Operations LLC Cam bearing surface of an engine cylinder head that includes an axially extending oil passage
DE102009049217A1 (en) * 2009-10-13 2011-04-28 Mahle International Gmbh Internal combustion engine with at least one camshaft
DE102010024721A1 (en) * 2010-06-23 2012-03-29 Mahle International Gmbh Cam and associated camshaft
DE102010045047A1 (en) * 2010-09-10 2012-03-15 Thyssenkrupp Presta Teccenter Ag Method for assembling a motor module
DE102011054350A1 (en) * 2011-10-10 2013-04-11 Thyssenkrupp Presta Teccenter Ag Camshaft and functional elements for a camshaft
DE102013020770A1 (en) * 2013-12-11 2015-06-11 Daimler Ag Cylinder head device for an internal combustion engine
CN103790663B (en) * 2013-12-31 2017-01-25 广西玉柴机器股份有限公司 Integrated camshaft
JP6442388B2 (en) * 2015-09-30 2018-12-19 株式会社クボタ Engine breather equipment
DE102016008299B4 (en) * 2016-07-06 2020-12-31 Neander Motors Ag Oil separator for an internal combustion engine
US9944373B1 (en) 2016-09-01 2018-04-17 Brunswick Corporation Arrangements for lubricating outboard marine engines
US9994294B1 (en) * 2017-01-13 2018-06-12 Brunswick Corporation Outboard marine engines having vertical camshaft arrangements
US10280812B1 (en) 2017-04-20 2019-05-07 Brunswick Corporation Cylinder head and camshaft configurations for marine engines
DE102019000498A1 (en) * 2019-01-23 2020-07-23 Deutz Aktiengesellschaft Cylinder head

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1880085A1 (en) 2005-05-10 2008-01-23 Mahle International GmbH Centrifugal oil mist separation device integrated in an axial hollow shaft of an internal combustion engine

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61175213A (en) * 1985-01-30 1986-08-06 Honda Motor Co Ltd Breather device in cam casing in engine
JPH01158508U (en) * 1987-02-16 1989-11-01
JP2504073B2 (en) * 1987-10-07 1996-06-05 三菱自動車工業株式会社 Camshaft with oil separator mechanism
JPH01122443A (en) * 1987-11-07 1989-05-15 Alps Electric Co Ltd Preparation of ink jet head substrate
JP2656515B2 (en) 1987-12-04 1997-09-24 株式会社日立製作所 Mounting device for torsion prevention damper
JPH01148009U (en) * 1988-03-31 1989-10-13
JPH083784Y2 (en) * 1989-08-09 1996-01-31 トヨタ自動車株式会社 Check valve device
JPH05149160A (en) * 1991-11-22 1993-06-15 Kubota Corp Governor lubricating device of centrifugal governor of engine
JPH07150923A (en) * 1993-12-01 1995-06-13 Nissan Motor Co Ltd Blow-by gas reducing device of engine
JPH08284634A (en) * 1995-04-07 1996-10-29 Suzuki Motor Corp Gas-liquid separation device for blow-by gas
DE19931740C2 (en) * 1999-07-08 2001-06-13 Daimler Chrysler Ag Reciprocating internal combustion engine with a camshaft
JP4414070B2 (en) * 2000-07-11 2010-02-10 本田技研工業株式会社 Valve operating device with breather device for engine
DE10226695A1 (en) * 2002-06-15 2003-12-24 Daimler Chrysler Ag Centrifugal oil separator in a crankcase of an internal combustion engine
JP4249504B2 (en) * 2003-02-17 2009-04-02 マツダ株式会社 Oil separator structure and oil separator unit
JP4344579B2 (en) * 2003-10-15 2009-10-14 株式会社マーレ フィルターシステムズ Cylinder head cover oil separator
FR2868468B1 (en) * 2004-04-06 2008-03-21 Renault Sas OIL RETURN DEVICE FORMING SIPHON FOR INTERNAL COMBUSTION ENGINE
US7219629B2 (en) * 2005-07-11 2007-05-22 Kawasaki Jukogyo Kabushiki Kaisha Breathing system in combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1880085A1 (en) 2005-05-10 2008-01-23 Mahle International GmbH Centrifugal oil mist separation device integrated in an axial hollow shaft of an internal combustion engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3033499B1 (en) 2013-08-13 2017-05-10 Thyssenkrupp Presta Teccenter Ag Camshaft assembly and camshaft arrangement
WO2018099885A1 (en) * 2016-12-02 2018-06-07 Thyssenkrupp Presta Teccenter Ag Method for mounting at least one sealing ring on a camshaft in a bearing line of an internal combustion engine, and camshaft having at least one sealing ring mounted in such a way
US10815836B2 (en) 2016-12-02 2020-10-27 Thyssenkrupp Presta Teccenter Ag Method for mounting at least one sealing ring on a camshaft in a bearing line of an internal combustion engine, and camshaft having at least one sealing ring mounted in such a way
WO2019002322A1 (en) * 2017-06-30 2019-01-03 Thyssenkrupp Presta Teccenter Ag Conveyor and compressor element, hollow shaft, combustion engine, and method for purifying blowby gases
DE102017114646B4 (en) 2017-06-30 2023-08-03 Thyssenkrupp Ag Conveyor and compressor element, hollow shaft, internal combustion engine and method for cleaning blow-by gases

Also Published As

Publication number Publication date
EP1845238A3 (en) 2009-10-21
US20070215075A1 (en) 2007-09-20
EP1845238B1 (en) 2012-12-19
US7434572B2 (en) 2008-10-14
DE102006012611A1 (en) 2007-09-27

Similar Documents

Publication Publication Date Title
EP1845238B1 (en) Cylinder head of combustion engine
EP2603674B1 (en) Hollow body with integrated oil separator
EP2406470B1 (en) Shaft body comprising an integrated oil separator unit
DE102006024817A1 (en) Cylinder head of an internal combustion engine
EP1963626B1 (en) Camshaft adjuster
DE102006024816A1 (en) Device for venting a crankcase
DE10063903A1 (en) Free jet centrifuge with integrated oil separator
EP1691043A2 (en) Device for ventilating an engine crankcase , particularly a V-engine
DE102007054992B4 (en) Internal combustion engine with a cylinder head and with a lubricant circuit
EP1310637B1 (en) Engine with at least two cylinder banks
DE19828307A1 (en) Cylinder head of an internal combustion engine
DE102005003113A1 (en) Separator device for precipitating oil from crankcase ventilating gases in an internal combustion engine has a gas-feeder pipe running at a tangent into a separator/cyclone chamber
WO2011110630A1 (en) Oil mist separator comprising an oil recirculating channel having a siphon trap
DE102015218201A1 (en) GAS OIL SEPARATOR FOR A COMBUSTION ENGINE
EP3250797B1 (en) Internal combustion engine comprising an oil return line having an oil duct
DE102012015594A1 (en) Cylinder head for internal combustion engine of motor car, has seal flange surface, over which cylinder head is connected with suction element, and another seal flange surface, over which cylinder head is connected with exhaust element
DE102004041110B4 (en) Internal combustion engine and associated cylinder head cover
DE102007013348A1 (en) Cylinder head for use in internal combustion engine, has cam shaft formed as oil mist separator, and drain comprising inlet arranged in slow-flow region of oil separation compartment for extracting cleaned blow-by-gas from compartment
EP1624162A1 (en) Method for venting the crankcase of an internal combustion engine and internal combustion engine for performing this method
AT503763B1 (en) INTERNAL COMBUSTION ENGINE WITH A CRANKCASE FOR SEVERAL CYLINDER
DE102008028173A1 (en) Centrifugal oil separator for use as chain wheel of valve gear, has separating chamber formed inside housing, and moment coupling structures cooperating with axial fasteners, where housing includes wall section designed as tooth
DE102017114909B4 (en) Hollow shaft and method for separating a liquid
DE102014216826A1 (en) Internal combustion engine with valve train lubrication and method for operating such an internal combustion engine
DE102012015784A1 (en) Cylinder head for internal combustion engine of motor vehicle, comprises two receiving areas arranged on sides of two sealing flange surfaces for two camshafts, where receiving areas are fluidically connected to each other area by area
DE102018008239A1 (en) Oil deflector for a reciprocating piston machine, especially a motor vehicle

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20091105

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHELLHASE, TORSTEN

Inventor name: HUETTER, ULRICH

AKX Designation fees paid

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20110301

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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 FR GB

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: DE

Ref legal event code: R096

Ref document number: 502007011057

Country of ref document: DE

Effective date: 20130214

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: 20130920

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007011057

Country of ref document: DE

Effective date: 20130920

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

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

Ref country code: GB

Payment date: 20180130

Year of fee payment: 12

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

Ref country code: FR

Payment date: 20180125

Year of fee payment: 12

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

Ref country code: DE

Payment date: 20180329

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007011057

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190123

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

Ref country code: FR

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

Effective date: 20190131

Ref country code: DE

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

Effective date: 20190801

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 NON-PAYMENT OF DUE FEES

Effective date: 20190123