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EP0515925A1 - Culasse pour moteur à combustion - Google Patents

Culasse pour moteur à combustion Download PDF

Info

Publication number
EP0515925A1
EP0515925A1 EP92108224A EP92108224A EP0515925A1 EP 0515925 A1 EP0515925 A1 EP 0515925A1 EP 92108224 A EP92108224 A EP 92108224A EP 92108224 A EP92108224 A EP 92108224A EP 0515925 A1 EP0515925 A1 EP 0515925A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
channels
oil
valves
head according
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
EP92108224A
Other languages
German (de)
English (en)
Other versions
EP0515925B1 (fr
Inventor
Jürgen Dipl.-Ing. Wahnschaffe
Lothar Bauer
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0515925A1 publication Critical patent/EP0515925A1/fr
Application granted granted Critical
Publication of EP0515925B1 publication Critical patent/EP0515925B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00Casting in, on, or around objects which form part of the product
    • B22D19/0009Cylinders, pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • F02F1/42Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00Engines characterised by fuel-air mixture compression
    • F02B1/02Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/16Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18Multi-cylinder engines
    • F02B2075/1804Number of cylinders
    • F02B2075/1816Number of cylinders four
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18DOHC [Double overhead camshaft]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00Engines characterised by air compression and subsequent fuel addition
    • F02B3/06Engines characterised by air compression and subsequent fuel addition with compression ignition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • F02F2001/244Arrangement of valve stems in cylinder heads
    • F02F2001/247Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

Definitions

  • the invention relates to a cylinder head for an internal combustion engine according to the preamble of claim 1.
  • Such an internal combustion engine with the features of the preamble of claim 1 enables a favorable arrangement of an ignition device or an injection device in the center of the combustion chamber associated with each piston, in that the gas exchange valves can be arranged around the central ignition device or injection device in the cylinder head area assigned to a combustion chamber. Nevertheless, a reliable supply of lubricating oil and, if necessary, cooling oil to the camshaft bearings, the valves and the sliding surface between the camshaft and valve tappet must be ensured.
  • the known cylinder head has disadvantages, since long connections to the valves and the camshaft bearings are present from the oil channels arranged below the camshafts. These have to be manufactured in a complex manner.
  • the invention has for its object to provide a cylinder head for an internal combustion engine, in which a secure supply of lubricating oil to the camshaft bearings and the valves is ensured, the corresponding oil channels and connections should be easy and inexpensive to manufacture.
  • connections are designed as channels or recesses which are formed by casting cores when the cylinder head is cast, the short connections have a positive effect on the production process. Because the connections are short, the risk of breaking appropriately designed casting cores is low or no longer exists.
  • the casting cores of the oil channels and the channels and / or recesses branching off each oil channel are formed in one piece. This one-piece design enables a particularly efficient manufacturing process, since only one casting core has to be fixed in the mold for each oil channel, preferably at the ends of the cylinder head.
  • the oil channels are advantageously connected to one another via transverse channels.
  • the casting cores of the two oil passages of the cylinder head and the transverse passages connecting them can be formed in one piece. This means that only one core needs to be defined for each cylinder head for the entire oil supply to the cylinder head in the casting mold. However, this also minimizes the risk of core parts breaking off, so that the reject rate of unusable cylinder heads is further reduced.
  • branch channels to the camshaft bearings are connected to the transverse channels.
  • This solution is particularly useful if cross-channels are provided in the area between all adjacent cylinders.
  • the cores to the camshaft bearings can be formed as simple short branch channels from these transverse channels.
  • the casting cores of the transverse channels are preferably formed in one piece with the casting cores of the branch channels.
  • bearing cores are molded onto the casting cores of the channels or recesses to the valve tappets, which are locked between the valve spring core lower part and valve spring core upper part after the core assembly. This further stabilizes the entire core and further reduces the risk of damage to the core. This also eliminates the risk of the casting core "bending", particularly in the area of the oil channels.
  • the gas exchange valves are preferably arranged vertically, that is to say axially parallel in the cylinder head. This has the advantage of an uncomplicated casting core and simple workability, for example of the valve seats or valve seat rings.
  • the cylinder head according to FIG. 1 has four gas exchange valves per cylinder, which are arranged in recesses 1a, 1b, 1c, 1d for each cylinder.
  • the recesses 1a, 1b, 1c, 1d in FIG. 1 have a diameter which is designed to accommodate hydraulic tappets for valve clearance compensation.
  • the recesses 1a, 1b, 1c, 1d or the corresponding gas exchange valves and hydraulic tappets are arranged in relation to the combustion chamber of a cylinder in such a way that an opening 2 can be arranged in the center of the combustion chamber.
  • An ignition device, a prechamber or an injection nozzle can be inserted into the opening 2.
  • the cylinder head is fastened to the crankcase of the internal combustion engine with cylinder head screws, the cylinder head screws being passed through cylinder head screw pipes 3.
  • Connecting walls 4 extend between the cylinder head screw pipes 3.
  • oil channels 6a, 6b extend parallel to the axes of the camshafts 5a, 5b (FIG. 3).
  • the oil passes through inlets and outlets 7a, 7b or alternatively 7c, in this case 7b is closed and transverse channels 8a, 8b into the oil channels 6a, 6b.
  • further transverse channels 8c, 8d, 8e are provided between the individual cylinder units In the four-cylinder head shown.
  • all channels through which oil flows are formed by a single casting core.
  • the casting core is held by receptacles that protrude through the inlet and outlet, 7a, 7b, and by bearing cores that protrude into the recesses 1a, 1b, 1c, 1d for the valves and are locked between the valve spring lower part and the valve spring upper part.
  • FIG. 3 shows a section through an assembled cylinder head.
  • the cylinder head with the oil channels 6a, 6b is covered by a cylinder head cover 9.
  • Two camshafts 5a, 5b are mounted in the covered space, which actuate hydraulic tappets 11a, 11b with their cams 10a, 10b.
  • the hydraulic tappets 11a, 11b in turn act on valve stems 12a, 12b, which are connected to valve disks, not shown, for controlling the gas exchange of the internal combustion engine.
  • Channels 13a, 13b branch off from the oil channels 6a, 6b to the recesses 1a, 1b, 1c, 1d, in which the hydraulic tappets 11a, 11b and the valve stems 12a, 12b with the valve springs are arranged.
  • a cross-channel 8c with branch channels 14c ', 14c' 'to the camshaft bearings is shown in broken lines.
  • FIG. 4 shows a section III through an unmounted cylinder head in the area of cylinder head screw pipes 3 while FIG. 5 shows a section IV through the cylinder head in Area of the transverse channel 8d.
  • FIGS. 6 and 7 show sections through another embodiment of a cylinder head with oil channels 6a ', 6b'.
  • channels 13a, 13b branch off from the oil channels 6a ', 6b' to the recesses 1a, 1b, 1c, 1d of each cylinder.
  • the camshaft bearings are connected via recesses 15a, 15b connected to the oil channels 6a ', 6b'.
  • Cross channels are not provided in this embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP92108224A 1991-05-25 1992-05-15 Culasse pour moteur à combustion Expired - Lifetime EP0515925B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4117162A DE4117162A1 (de) 1991-05-25 1991-05-25 Zylinderkopf fuer eine brennkraftmaschine
DE4117162 1991-05-25

Publications (2)

Publication Number Publication Date
EP0515925A1 true EP0515925A1 (fr) 1992-12-02
EP0515925B1 EP0515925B1 (fr) 1996-01-31

Family

ID=6432450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92108224A Expired - Lifetime EP0515925B1 (fr) 1991-05-25 1992-05-15 Culasse pour moteur à combustion

Country Status (3)

Country Link
EP (1) EP0515925B1 (fr)
JP (1) JPH05180067A (fr)
DE (2) DE4117162A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0939215A3 (fr) * 1998-02-25 2000-06-07 Isuzu Motors Limited Culasse
US8439008B2 (en) 2005-06-22 2013-05-14 GM Global Technology Operations LLC Internal combustion engine comprising an integrated oil dipstick guiding element

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4435299A1 (de) * 1994-10-01 1996-04-04 Bayerische Motoren Werke Ag Reihen-Zylinderkopf mit gegossenem Öl-Längskanal
DE19542495C5 (de) * 1995-11-15 2005-08-04 Daimlerchrysler Ag Gegossener Zylinderkopf einer mehrzylindrigen Brennkraftmaschine
DE19723342C1 (de) * 1997-06-04 1998-09-03 Vaw Mandl & Berger Gmbh Zylinderkopf und Gießkern zur Herstellung von Ölkanälen
DE19729947A1 (de) 1997-07-12 1999-01-14 Deutz Ag Vierventil-Blockzylinderkopf mit schräg angeordneten Gaswechselventilen
JP2004116356A (ja) * 2002-09-25 2004-04-15 Isuzu Motors Ltd シリンダヘッドのオイルギャラリ形成方法及びシリンダヘッド
JP4075717B2 (ja) * 2003-07-25 2008-04-16 三菱自動車工業株式会社 内燃機関のシリンダヘッド構造
DE102012222752A1 (de) * 2012-12-11 2014-06-12 Mahle International Gmbh Lageranordnung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186387A (en) * 1963-10-09 1965-06-01 Gen Motors Corp Die castable cylinder head construction
GB2139285A (en) * 1983-05-02 1984-11-07 Honda Motor Co Ltd Water cooled ic engine cylinder head
FR2552820A1 (fr) * 1983-10-04 1985-04-05 Honda Motor Co Ltd Culasse de cylindre pour moteur a combustion interne du type a double arbre a cames en tete
US4709667A (en) * 1985-05-14 1987-12-01 Honda Giken Kogyo Kabushiki Kaisha Oil supply device for valve operating system having hydraulic tappet in internal combustion engine
DE3710630A1 (de) * 1987-03-31 1988-07-07 Audi Ag Fluessigkeitsgekuehlter zylinderkopf
GB2216187A (en) * 1988-02-22 1989-10-04 Nissan Motor Oil return from a cylinder head for dohc i.c. engine with four valves per cylinder
EP0416600A1 (fr) * 1989-09-05 1991-03-13 Nissan Motor Co., Ltd. Culasse d'un moteur à combustion interne

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0754090B2 (ja) * 1984-09-14 1995-06-07 スズキ株式会社 自動二輪車用エンジンのシリンダヘッド冷却構造
DE3604667A1 (de) * 1986-02-14 1987-08-20 Audi Ag Gegossener zylinderkopf fuer eine mehrzylindrige reihen-brennkraftmaschine
DE3724495A1 (de) * 1987-07-24 1989-02-02 Audi Ag Ventilgesteuerte, fremdgezuendete viertakt-hubkolbenbrennkraftmaschine
DE3826013A1 (de) * 1988-07-30 1990-02-01 Bayerische Motoren Werke Ag Zylinderkopf fuer hubkolben-brennkraftmaschinen
JPH087043Y2 (ja) * 1988-10-29 1996-02-28 富士重工業株式会社 ダブルオーバヘッドカム型動弁機構の潤滑装置
JP2539260B2 (ja) * 1988-12-03 1996-10-02 マツダ株式会社 Dohcエンジンのカム軸スラスト規制構造

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186387A (en) * 1963-10-09 1965-06-01 Gen Motors Corp Die castable cylinder head construction
GB2139285A (en) * 1983-05-02 1984-11-07 Honda Motor Co Ltd Water cooled ic engine cylinder head
FR2552820A1 (fr) * 1983-10-04 1985-04-05 Honda Motor Co Ltd Culasse de cylindre pour moteur a combustion interne du type a double arbre a cames en tete
US4709667A (en) * 1985-05-14 1987-12-01 Honda Giken Kogyo Kabushiki Kaisha Oil supply device for valve operating system having hydraulic tappet in internal combustion engine
DE3710630A1 (de) * 1987-03-31 1988-07-07 Audi Ag Fluessigkeitsgekuehlter zylinderkopf
GB2216187A (en) * 1988-02-22 1989-10-04 Nissan Motor Oil return from a cylinder head for dohc i.c. engine with four valves per cylinder
EP0416600A1 (fr) * 1989-09-05 1991-03-13 Nissan Motor Co., Ltd. Culasse d'un moteur à combustion interne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0939215A3 (fr) * 1998-02-25 2000-06-07 Isuzu Motors Limited Culasse
US8439008B2 (en) 2005-06-22 2013-05-14 GM Global Technology Operations LLC Internal combustion engine comprising an integrated oil dipstick guiding element

Also Published As

Publication number Publication date
EP0515925B1 (fr) 1996-01-31
JPH05180067A (ja) 1993-07-20
DE59205210D1 (de) 1996-03-14
DE4117162A1 (de) 1992-11-26

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