EP0515925A1 - Culasse pour moteur à combustion - Google Patents
Culasse pour moteur à combustion Download PDFInfo
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B2075/1804—Number of cylinders
- F02B2075/1816—Number of cylinders four
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/18—DOHC [Double overhead camshaft]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/247—Arrangement 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)
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)
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)
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)
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)
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 |
-
1991
- 1991-05-25 DE DE4117162A patent/DE4117162A1/de not_active Withdrawn
-
1992
- 1992-05-15 DE DE59205210T patent/DE59205210D1/de not_active Expired - Lifetime
- 1992-05-15 EP EP92108224A patent/EP0515925B1/fr not_active Expired - Lifetime
- 1992-05-25 JP JP4157606A patent/JPH05180067A/ja not_active Withdrawn
Patent Citations (7)
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)
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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