EP0146254A1 - Zylinderkopf - Google Patents

Zylinderkopf Download PDF

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Publication number
EP0146254A1
EP0146254A1 EP19840307672 EP84307672A EP0146254A1 EP 0146254 A1 EP0146254 A1 EP 0146254A1 EP 19840307672 EP19840307672 EP 19840307672 EP 84307672 A EP84307672 A EP 84307672A EP 0146254 A1 EP0146254 A1 EP 0146254A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
cylinder
inlet
head
casting
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.)
Withdrawn
Application number
EP19840307672
Other languages
English (en)
French (fr)
Inventor
Graham Ernest Atkin
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.)
Rover Co Ltd
Original Assignee
Rover Co Ltd
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 Rover Co Ltd filed Critical Rover Co Ltd
Publication of EP0146254A1 publication Critical patent/EP0146254A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F02F1/242—Arrangement of spark plugs or injectors
    • 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
    • F01L1/053—Camshafts overhead type
    • F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
    • 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
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • 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
    • 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
    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • 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
    • F02F2001/241—Cylinder heads specially adapted to pent roof shape of the combustion chamber
    • 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
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

Definitions

  • This invention relates to cylinder heads for internal combustion engines.
  • the invention provides a cylinder head in which the inlet and exhaust valves for each cylinder are inclined relative to and on opposite sides of the plane of the cylinder axes, the head comprising a casting having a recess for each cylinder extending, from the face that is opposed to the combustion chamber face, between the inlet and exhaust valves to the region of the associated exhaust port or ports, and a closing member which is inserted into each recess and connected at its periphery to the surface of that recess to define a cooling passage, the closing member having an aperture for insertion of a sparking plug.
  • the cooling jacket defined by the closing member can provide a substantial amount of the head cooling for each cylinder, making extensive additional cooling channels and recesses unnecessary, while avoiding the need for sand cores.
  • the closing member is dished in shape and may be profiled to follow the contour of the adjacent surfaces of the recess, around the periphery that contacts the recess, and/or over its depth.
  • the closing member may be a pressing.
  • the arrangement is particularly suited to four valves per cylinder, and a suitable inclination between inlet and exhaust valves in 40° to 60°.
  • the sparking plug may be surrounded by a tube, in order to protect it from any oil in the head.
  • the inlet and exhaust ports may be defined by mould pieces, which are withdrawn from the casting when set: two such pieces may be provided for each port, to be withdrawn from opposite ends of the port, at least one of which may be withdrawn on a curved path.
  • the casting may be sand or die-cast, preferably pressure die-cast, and should not have undercuts, to facilitate manufacture.
  • Various drillings may be made in the finished castings, for example to communicate with the cooling passages defined by the casting and the closing member, and to accommodate the valve stems and valve guides.
  • the cylinder head comprises a casting 1, the upper face of which is closed by a valve gear cover 2 secured by bolts 3.
  • the head has two inlet valves 4 and two exhaust valves 5 per cylinder in inlet ports 6 and exhaust ports 7, respectively.
  • the valves are driven by respective overhead camshafts 8, 9 via bucket tappets 8a, 9a.
  • the casting 1 has for each cylinder a recess 10 extending from its upper face to the region of the inlet and exhaust ports 6, 7.
  • a closing member in the form of a metal cup 11 is inserted into the recess and is connected around its periphery to a ledge lla on the surface of the recess 10, thereby defining a cooling passage 12 adjacent the valves 4, 5.
  • Cooling liquid passes through cooling passage 12 by means of cast-in recesses 13, 14 and by means of various drillings.
  • cooling liquid enters recess 13 (which is closed on the right hand side as seen in figures 5 to 7 by a plate which is not shown) from the block via inlet drillings 15. It passes to the lower part of the cooling passage 12 via drillings 13a, 13b and 13c, and also to recess 14 by means of drillings 16.
  • Recess 14 is similarly closed on the right hand side by a plate which is not shown, and liquid passes to the upper part of cooling passage 12 via drillings 14a, 14b and 14c. Liquid flows right to left as seen in the drawings and leaves via wide drilling 17. If desired, additional outlet passages could be drilled from the lower part of the cooling passage beneath the drilling 17.
  • the cup 11 has an aperture for a sparking plug 18 which is protected from the oil in the valve gear region of the head by tube 19.
  • the plug 18 is threaded into a boss 18a in the casting and the cup 11 seats against the top of the boss around the sparking plug. Threading the plug 18 into the boss secures the protective tube in position, and also assists in holding the cup 11 in position.
  • the valve gear cover 2 seals against a shoulder 19b on the tube via an 0-ring 19a.
  • the casting 1 is designed without undercuts so that it can be cast easily.
  • a moulding box 20 receives a die 21 which together form the outer periphery of the casting and its deep recess 10.
  • the moulding has sliders 22, 23 which leave spaces for the valve springs (not shown) and mould pieces 24, 25 for the inlet ports and 26, 27 for the outlet ports. Mould pieces 24, 27 and sliders 22, 23 can be withdrawn in a straight line when the casting has set. Mould pieces 25, 26 are withdrawn on a curved path when the casting has set.
  • the casting is pressure die-cast, but could be gravity die-cast or cast in a sand mould.
  • the material is aluminium alloy, but other metals or alloys could be used if desired.
  • the cup 11 is secured in position by a press fit, but it could be secured in position by the wall above it being turned down onto the periphery of the cup (staking). Alternatively the cup 11 could be rivetted, or secured by adhesive such as epoxy adhesive.
  • the cup 11 is an aluminium alloy pressing but other materials could be used.
  • the cup 11 could be integral with the tube 19, for example, the composite member could be a casting or a pressing.
  • the sparking plug 18 need not play any part in securing the cup 11 in position.
  • the cup 11 could engage the upstanding wall of the boss 18a instead of its top surface.
  • the protective tube could also engage the upstanding wall of the boss 18a. This arrangement could also be achieved with an integral arrangement of cup 11 and tube 19.
  • cup 11 is not confined to engines with four valves per cylinder, and could be used with two valves or three valves per cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP19840307672 1983-12-02 1984-11-07 Zylinderkopf Withdrawn EP0146254A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838332318A GB8332318D0 (en) 1983-12-02 1983-12-02 Cylinder head
GB8332318 1983-12-02

Publications (1)

Publication Number Publication Date
EP0146254A1 true EP0146254A1 (de) 1985-06-26

Family

ID=10552778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840307672 Withdrawn EP0146254A1 (de) 1983-12-02 1984-11-07 Zylinderkopf

Country Status (4)

Country Link
EP (1) EP0146254A1 (de)
JP (1) JPS60192858A (de)
ES (1) ES291690Y (de)
GB (2) GB8332318D0 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344597A2 (de) * 1988-06-01 1989-12-06 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Zylinderkopf für obengesteuerte Brennkraftmaschinen
DE3818636A1 (de) * 1988-06-01 1989-12-07 Bayerische Motoren Werke Ag Hubkolben-brennkraftmaschine mit einem zwei obenliegende steuerwellen umfassenden zylinderkopf
EP0433125A1 (de) * 1989-12-15 1991-06-19 Automobiles Peugeot Verfahren zur Herstellung einer Zündkerzöffnung in einem Zylinderkopf einer Brennkraftmaschine
FR2662471A1 (fr) * 1990-05-23 1991-11-29 Peugeot Procede de realisation de puits de bougie dans une culasse d'un moteur a combustion interne et ensemble d'elements destine a former au moins un tel puits de bougie.
DE4116943C1 (en) * 1991-05-24 1992-06-17 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Liq. cooled IC engine four-valve cylinder head - whose bottom is thickened on outlet side down to outlet ducts
EP0635631A1 (de) * 1993-07-23 1995-01-25 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Zylinderkopfanordnung einer Brennkraftmaschine
WO2005084851A1 (de) * 2004-02-26 2005-09-15 Motorenfabrik Hatz Gmbh & Co. Kg Verfahren zur herstellung eines einteiligen zylinderkopfs für dieselmotoren durch druckgiessen und druckgussform zur verwendung in dem verfahren

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4033623C1 (de) * 1990-10-23 1992-03-12 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
CN103182480B (zh) * 2011-12-31 2015-07-08 上海爱仕达汽车零部件有限公司 一种发动机缸盖重力浇铸工艺

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE395316C (de) * 1923-03-22 1924-05-17 Max Deubel Befestigung von Armaturen an Wandungen, die grosse Temperaturunterschiede gegen ihre Umgebung aufweisen
GB579664A (en) * 1943-10-26 1946-08-12 Continental Aviat & Eng Corp Cylinder head for internal combustion engines
CH277073A (de) * 1948-12-31 1951-08-15 United Machine Tools Factories Verfahren zur Herstellung von Gegenständen mit mindestens teilweise gekrümmten Kanälen, insbesondere durch Druckguss oder Spritzguss.
US2990819A (en) * 1958-05-14 1961-07-04 Gen Motors Corp Cylinder head construction for internal combustion engines
US3144013A (en) * 1962-04-10 1964-08-11 Renault Internal combustion engines
US3468295A (en) * 1966-11-08 1969-09-23 Renault Cylinder heads of internal combustion engines
FR2226231A1 (de) * 1973-04-18 1974-11-15 Aeroplane Motor Alu Cast

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1256401A (en) * 1969-05-22 1971-12-08 Rubery Owen & Co Ltd Improvements in cylinder heads for internal combustion engines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE395316C (de) * 1923-03-22 1924-05-17 Max Deubel Befestigung von Armaturen an Wandungen, die grosse Temperaturunterschiede gegen ihre Umgebung aufweisen
GB579664A (en) * 1943-10-26 1946-08-12 Continental Aviat & Eng Corp Cylinder head for internal combustion engines
CH277073A (de) * 1948-12-31 1951-08-15 United Machine Tools Factories Verfahren zur Herstellung von Gegenständen mit mindestens teilweise gekrümmten Kanälen, insbesondere durch Druckguss oder Spritzguss.
US2990819A (en) * 1958-05-14 1961-07-04 Gen Motors Corp Cylinder head construction for internal combustion engines
US3144013A (en) * 1962-04-10 1964-08-11 Renault Internal combustion engines
US3468295A (en) * 1966-11-08 1969-09-23 Renault Cylinder heads of internal combustion engines
FR2226231A1 (de) * 1973-04-18 1974-11-15 Aeroplane Motor Alu Cast

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344597A2 (de) * 1988-06-01 1989-12-06 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Zylinderkopf für obengesteuerte Brennkraftmaschinen
DE3818636A1 (de) * 1988-06-01 1989-12-07 Bayerische Motoren Werke Ag Hubkolben-brennkraftmaschine mit einem zwei obenliegende steuerwellen umfassenden zylinderkopf
EP0344597A3 (en) * 1988-06-01 1990-04-18 Bayerische Motoren Werke Aktiengesellschaft Cylinder head for an internal-combustion engine
EP0433125A1 (de) * 1989-12-15 1991-06-19 Automobiles Peugeot Verfahren zur Herstellung einer Zündkerzöffnung in einem Zylinderkopf einer Brennkraftmaschine
FR2662471A1 (fr) * 1990-05-23 1991-11-29 Peugeot Procede de realisation de puits de bougie dans une culasse d'un moteur a combustion interne et ensemble d'elements destine a former au moins un tel puits de bougie.
DE4116943C1 (en) * 1991-05-24 1992-06-17 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Liq. cooled IC engine four-valve cylinder head - whose bottom is thickened on outlet side down to outlet ducts
EP0635631A1 (de) * 1993-07-23 1995-01-25 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Zylinderkopfanordnung einer Brennkraftmaschine
US5458099A (en) * 1993-07-23 1995-10-17 Dr. Ing. H.C.F. Porsche Ag Cylinder head arrangement of an internal-combustion engine
WO2005084851A1 (de) * 2004-02-26 2005-09-15 Motorenfabrik Hatz Gmbh & Co. Kg Verfahren zur herstellung eines einteiligen zylinderkopfs für dieselmotoren durch druckgiessen und druckgussform zur verwendung in dem verfahren

Also Published As

Publication number Publication date
ES291690Y (es) 1987-01-16
JPS60192858A (ja) 1985-10-01
GB2150634B (en) 1987-10-21
GB8332318D0 (en) 1984-01-11
GB2150634A (en) 1985-07-03
GB8428494D0 (en) 1984-12-19
ES291690U (es) 1986-05-16

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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

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19850823

17Q First examination report despatched

Effective date: 19860901

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19870728

EUG Se: european patent has lapsed

Ref document number: 84307672.0

Effective date: 19881005

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ATKIN, GRAHAM ERNEST