EP0283911A2 - Culasse pour moteur à combustion interne - Google Patents

Culasse pour moteur à combustion interne Download PDF

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Publication number
EP0283911A2
EP0283911A2 EP88104147A EP88104147A EP0283911A2 EP 0283911 A2 EP0283911 A2 EP 0283911A2 EP 88104147 A EP88104147 A EP 88104147A EP 88104147 A EP88104147 A EP 88104147A EP 0283911 A2 EP0283911 A2 EP 0283911A2
Authority
EP
European Patent Office
Prior art keywords
cylinder head
hood
camshaft
oil
lubricating oil
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
EP88104147A
Other languages
German (de)
English (en)
Other versions
EP0283911B1 (fr
EP0283911A3 (en
Inventor
Christoph Schausberger
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0283911A2 publication Critical patent/EP0283911A2/fr
Publication of EP0283911A3 publication Critical patent/EP0283911A3/de
Application granted granted Critical
Publication of EP0283911B1 publication Critical patent/EP0283911B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • 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
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/106—Oil reservoirs
    • 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
    • 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
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

Definitions

  • the invention relates to a device of the type specified in the preamble of the first claim.
  • a generic cylinder head is known. Recesses are provided in the cylinder head below the cams. These cutouts fill with lubricating oil during operation of the internal combustion engine, in particular since the cams are additionally lubricated by spray oil.
  • the object of the present invention is to develop a generic cylinder head in such a way that the resulting oil foaming is avoided as far as possible without impairing the lubrication of the valve train.
  • this object is achieved by the characterizing features of the first claim. Because of the hood proposed according to the invention, the cams of the camshaft can practically only throw lubricating oil around in a narrowly limited space and thus also only add small amounts of air to the lubricating oil.
  • the lubricating oil flowing out of the oil reservoir is largely unfoamed. This is because only lubricating oil can flow out of the oil reservoir if the reservoir is overfilled. It is not emptied or kept at a relatively low level by the constantly immersing cams in the manner of blades. This is precisely the reason why air components are mixed in with the lubricating oil flowing back into the oil sump.
  • the development according to claim 2 describes an advantageous embodiment of the hood. It is easy to manufacture and only needs to be deflected according to the camshaft length.
  • the development according to claim 3 has the advantage that the hood can tightly enclose the camshaft, so that on the one hand the installation space required by the hood is reduced and on the other hand only small amounts of air can be mixed into the oil.
  • the hood according to the invention is not the valve cover hood, but rather a hood which is used exclusively for throwing lubricant around through the camshaft and thus also for mixing air in when the cam is immersed in the lubricating oil reservoir to prevent.
  • the space remaining between the valve cover and the hood arranged according to the invention is not necessarily lubricant-free, but is connected, for example, to the oil sump in the crankcase via the oil return bores from the cylinder head into the crankcase or via the oil filler neck in the valve cover.
  • a cross section through part of a cylinder head at the level of a gas exchange valve is shown schematically.
  • 1 denotes the cylinder head
  • 2 the camshaft
  • 3 the gas exchange valve, of which only the valve stem is shown
  • 4 the cup tappet arranged between the valve stem and camshaft 2.
  • the camshaft is held by bearing bridges 6, which are connected to the cylinder head by screws 7.
  • the cylinder head has a recess 8 below each cam 5 of the camshaft 2. This recess is filled with lubricating oil during operation of the internal combustion engine. The excess lubricating oil runs from the cylinder head back into the crankcase via return bores (not shown).
  • a hood 9 Covered with respect to the rest of the space in the cylinder head, the camshaft 2 is covered by a hood 9.
  • This hood 9 is U-shaped in cross section and nestles close to the bearing bridges. It is held by lugs 10 arranged laterally on each bearing bridge 6, which engage in recesses 11 in the hood.
  • the hood 9 itself is made of elastic material and can therefore be easily pushed over the lugs 10 or removed again by spreading.
  • the hood edges 12 are supported on the cylinder head at the level of the bearing bridges.
EP88104147A 1987-03-27 1988-03-16 Culasse pour moteur à combustion interne Expired - Lifetime EP0283911B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3710078A DE3710078C1 (de) 1987-03-27 1987-03-27 Zylinderkopf fuer eine Brennkraftmaschine
DE3710078 1987-03-27

Publications (3)

Publication Number Publication Date
EP0283911A2 true EP0283911A2 (fr) 1988-09-28
EP0283911A3 EP0283911A3 (en) 1989-07-12
EP0283911B1 EP0283911B1 (fr) 1990-11-07

Family

ID=6324101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104147A Expired - Lifetime EP0283911B1 (fr) 1987-03-27 1988-03-16 Culasse pour moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0283911B1 (fr)
DE (1) DE3710078C1 (fr)
ES (1) ES2018587B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004050056A1 (de) * 2004-10-14 2006-04-27 Bayerische Motoren Werke Ag Maschinengehäuse für eine Brennkraftmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137561A1 (de) * 1991-11-15 1993-05-19 Audi Ag Zylinderkopf fuer eine brennkraftmaschine
DE19712971B4 (de) * 1996-04-06 2006-05-11 Volkswagen Ag Zylinderkopf für eine Brennkraftmaschine
DE102012211458B3 (de) * 2012-07-03 2013-11-21 Schaeffler Technologies AG & Co. KG Deckel mit Ölspeicherfunktionalität für ein Gehäuse eines elektrohydraulischen Ventiltriebes eines Verbrennungsmotors

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR510763A (fr) * 1920-02-26 1920-12-10 Rene Fonck Perfectionnements aux distributions par cames des moteurs
US1415067A (en) * 1920-02-07 1922-05-09 Packard Motor Car Co Hydrocarbon motor
US2881863A (en) * 1956-01-19 1959-04-14 Stanford A Fulton Apparatus for oiling over-head valves of engine
GB2049807A (en) * 1979-05-23 1980-12-31 Fiat Veicoli Ind Cylinder head for compressionignition internal combustion engine
US4534325A (en) * 1983-07-27 1985-08-13 Mazda Motor Corporation Cam shaft holding system for internal combustion engine
DE3602477A1 (de) * 1985-01-29 1986-07-31 Toyota Jidosha K.K., Toyota, Aichi Nockenwellenlagerung
FR2582732A1 (fr) * 1985-05-29 1986-12-05 Porsche Ag Fixation d'un couvre-culasse sur une culasse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7017466U (de) * 1970-05-09 1970-08-06 Teroson Gmbh Motor mit zylinderkopfdeckelhaube.
DE2263048A1 (de) * 1971-12-22 1973-06-28 Honda Motor Co Ltd Viertaktkolbenbrennkraftmaschine mit fremdzuendung
DE3215766C2 (de) * 1982-04-28 1984-06-07 Daimler-Benz Ag, 7000 Stuttgart Schmierölkreislauf für Hubkolben-Brennkraftmaschinen
US4593659A (en) * 1985-06-28 1986-06-10 Cummins Engine Company, Inc. Engine valve cover

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1415067A (en) * 1920-02-07 1922-05-09 Packard Motor Car Co Hydrocarbon motor
FR510763A (fr) * 1920-02-26 1920-12-10 Rene Fonck Perfectionnements aux distributions par cames des moteurs
US2881863A (en) * 1956-01-19 1959-04-14 Stanford A Fulton Apparatus for oiling over-head valves of engine
GB2049807A (en) * 1979-05-23 1980-12-31 Fiat Veicoli Ind Cylinder head for compressionignition internal combustion engine
US4534325A (en) * 1983-07-27 1985-08-13 Mazda Motor Corporation Cam shaft holding system for internal combustion engine
DE3602477A1 (de) * 1985-01-29 1986-07-31 Toyota Jidosha K.K., Toyota, Aichi Nockenwellenlagerung
FR2582732A1 (fr) * 1985-05-29 1986-12-05 Porsche Ag Fixation d'un couvre-culasse sur une culasse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004050056A1 (de) * 2004-10-14 2006-04-27 Bayerische Motoren Werke Ag Maschinengehäuse für eine Brennkraftmaschine

Also Published As

Publication number Publication date
DE3710078C1 (de) 1988-02-25
EP0283911B1 (fr) 1990-11-07
ES2018587B3 (es) 1991-04-16
EP0283911A3 (en) 1989-07-12

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