EP1845238A2 - Culasse de moteur - Google Patents

Culasse de moteur 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)
English (en)
Other versions
EP1845238B1 (fr
EP1845238A3 (fr
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/fr
Publication of EP1845238A3 publication Critical patent/EP1845238A3/fr
Application granted granted Critical
Publication of EP1845238B1 publication Critical patent/EP1845238B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0475—Hollow camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0476—Camshaft bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0422—Separating oil and gas with a centrifuge device

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)
EP07100955A 2006-03-20 2007-01-23 Culasse de moteur Expired - Fee Related EP1845238B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006012611A DE102006012611A1 (de) 2006-03-20 2006-03-20 Zylinderkopf eines Verbrennungsmotors

Publications (3)

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

Family

ID=38438191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07100955A Expired - Fee Related EP1845238B1 (fr) 2006-03-20 2007-01-23 Culasse de moteur

Country Status (3)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3033499B1 (fr) 2013-08-13 2017-05-10 Thyssenkrupp Presta Teccenter Ag Module d'arbre à cames et dispositif d'arbre à cames
WO2018099885A1 (fr) * 2016-12-02 2018-06-07 Thyssenkrupp Presta Teccenter Ag Procédé de montage d'au moins une bague d'étanchéité sur un arbre à cames dans voie support d'un moteur à combustion interne, et arbre à cames comprenant au moins une bague d'étanchéité ainsi montée
WO2019002322A1 (fr) * 2017-06-30 2019-01-03 Thyssenkrupp Presta Teccenter Ag Élément de transport et de compression, arbre creux, moteur à combustion interne et procédé de nettoyage de gaz de contournement

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006024817A1 (de) * 2006-05-29 2007-12-06 Mahle International Gmbh Zylinderkopf eines Verbrennungsmotors
JP4884279B2 (ja) * 2007-03-30 2012-02-29 本田技研工業株式会社 ブリーザ装置を備える内燃機関
US20090272360A1 (en) * 2007-10-03 2009-11-05 Industrial Technology Research Institute Lubrication device of four-stroke engines
FR2933626B1 (fr) * 2008-07-10 2011-01-21 Filtrauto Dispositif avec rotor a media coalesceur pour separer l'huile des gaz de carter d'un moteur a combustion interne.
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 (de) * 2009-10-13 2011-04-28 Mahle International Gmbh Brennkraftmaschine mit wenigstens einer Nockenwelle
DE102010024721A1 (de) 2010-06-23 2012-03-29 Mahle International Gmbh Nocken und zugehörige Nockenwelle
DE102010045047A1 (de) * 2010-09-10 2012-03-15 Thyssenkrupp Presta Teccenter Ag Verfahren zum Zusammenbau eines Motormoduls
DE102011054350A1 (de) 2011-10-10 2013-04-11 Thyssenkrupp Presta Teccenter Ag Nockenwelle sowie Funktionselemente für eine Nockenwelle
DE102013020770A1 (de) * 2013-12-11 2015-06-11 Daimler Ag Zylinderkopfvorrichtung für eine Brennkraftmaschine
CN103790663B (zh) * 2013-12-31 2017-01-25 广西玉柴机器股份有限公司 集成凸轮轴
JP6442388B2 (ja) * 2015-09-30 2018-12-19 株式会社クボタ エンジンのブリーザ装置
DE102016008299B4 (de) * 2016-07-06 2020-12-31 Neander Motors Ag Ölabscheideeinrichtung für eine Brennkraftmaschine
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 (de) * 2019-01-23 2020-07-23 Deutz Aktiengesellschaft Zylinderkopf

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1880085A1 (fr) 2005-05-10 2008-01-23 Mahle International GmbH Dispositif centrifuge separateur de brouillard d'huile integre dans un arbre axialement creux d'un moteur a combustion interne

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Publication number Priority date Publication date Assignee Title
EP1880085A1 (fr) 2005-05-10 2008-01-23 Mahle International GmbH Dispositif centrifuge separateur de brouillard d'huile integre dans un arbre axialement creux d'un moteur a combustion interne

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3033499B1 (fr) 2013-08-13 2017-05-10 Thyssenkrupp Presta Teccenter Ag Module d'arbre à cames et dispositif d'arbre à cames
WO2018099885A1 (fr) * 2016-12-02 2018-06-07 Thyssenkrupp Presta Teccenter Ag Procédé de montage d'au moins une bague d'étanchéité sur un arbre à cames dans voie support d'un moteur à combustion interne, et arbre à cames comprenant au moins une bague d'étanchéité ainsi montée
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 (fr) * 2017-06-30 2019-01-03 Thyssenkrupp Presta Teccenter Ag Élément de transport et de compression, arbre creux, moteur à combustion interne et procédé de nettoyage de gaz de contournement
DE102017114646B4 (de) 2017-06-30 2023-08-03 Thyssenkrupp Ag Förder- und Verdichterelement, Hohlwelle, Verbrennungsmotor und Verfahren zum Reinigen von Blowby-Gasen

Also Published As

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

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