EP0344597A2 - Culasse pour moteur à combustion interne - Google Patents

Culasse pour moteur à combustion interne Download PDF

Info

Publication number
EP0344597A2
EP0344597A2 EP89109344A EP89109344A EP0344597A2 EP 0344597 A2 EP0344597 A2 EP 0344597A2 EP 89109344 A EP89109344 A EP 89109344A EP 89109344 A EP89109344 A EP 89109344A EP 0344597 A2 EP0344597 A2 EP 0344597A2
Authority
EP
European Patent Office
Prior art keywords
cylinder head
shaft
cover
shaft pipe
control
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
EP89109344A
Other languages
German (de)
English (en)
Other versions
EP0344597B1 (fr
EP0344597A3 (en
Inventor
Paul Rosche
Wolfgang Ruffing
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 EP0344597A2 publication Critical patent/EP0344597A2/fr
Publication of EP0344597A3 publication Critical patent/EP0344597A3/de
Application granted granted Critical
Publication of EP0344597B1 publication Critical patent/EP0344597B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • 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
    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • 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 is based on the preamble of claim 1 from DE-A-36 38 765.
  • internal combustion engines are equipped with a plurality of intake and exhaust valves per cylinder arranged in the cylinder head.
  • the hanging valves are actuated via overhead control shafts, the control shafts per cylinder being mounted between the inlet and outlet valves thereof.
  • the control shaft bearings are split, the separate bearing caps being fastened on both sides of the respective control shaft by means of screw bolts.
  • a spark plug is arranged in a shaft in the region of the cylinder axis in order to achieve favorable charge combustion and is accessible via an opening in the cover of the cylinder head.
  • the shaft is partially formed by a shaft pipe which penetrates the cover of the cylinder head via the opening.
  • object of this document is to make the passage of the shaft pipe through the cylinder head cover, which is formed with play, in an oil-tight manner.
  • an elastic sealing ring is proposed for this purpose, which is pressed against the cylinder head cover by means of a nut arranged on the shaft pipe.
  • the problem underlying the application relates to the fact that, as shown in Fig. 1 of the already mentioned DE-OS 36 38 765, a considerable amount of space is required for the arrangement of the fastening devices of the separate bearing caps between the respective control shaft and the spark plug shaft is. This leads disadvantageously to a wide-headed cylinder head with additional weight resulting from greater material expenditure and larger, filled cooling rooms. Furthermore, the acute valve angle between the inlet and outlet valves is still relatively large.
  • the invention has for its object to provide a configuration for a cylinder head of the type described above, through which a narrow cylinder head can be reached.
  • a component serving to arrange valve control elements in the cylinder head is connected to the cylinder head via the shaft pipe.
  • the shaft pipe is used to fasten a common bearing cover for the split bearings arranged in a transverse plane for control shafts provided on both sides of the shaft pipe.
  • the shaft pipe can be used to fasten a control housing separate from the cylinder head, the indirect one Attachment via the common bearing cover for the control shaft bearing is preferred.
  • the basic idea of the invention is not a common cover for two control shaft bearings with a central screw connection per se, as is known, for example, from DE-C 36 41 129, but rather the design of a shaft pipe that continues the shaft for central holding down or fastening of at least one common bearing cover.
  • the mutual spacing of the control shafts can be significantly reduced, whereby the width of the cylinder head is narrower.
  • the angle between the intake and exhaust valves can be made even more acute with the advantage of a flat, compact combustion chamber trough in the cylinder head.
  • a 4-valve engine with a very flat roof combustion chamber can be achieved with the invention.
  • the invention can thus also be used both in a mixture-compressing internal combustion engine and in an air-compressing internal combustion engine with direct injection.
  • a cylinder head 3 is assigned to a cylinder 2.
  • the cylinder head 3 is equipped with paired and suspended intake valves 4 and paired and suspended exhaust valves 5.
  • the inlet valves 4 are actuated by a control shaft 6 and the exhaust valves 5 are actuated by a control shaft 7.
  • the control shafts 6 and 7 are mounted in bearings 8 and 9, the bearings 8 and 9 being arranged in a common transverse plane between the two inlet valves 4 and the two outlet valves 5 in order to achieve a rigid valve train.
  • the control shaft bearings 8 and 9 are formed divided, the lower bearing halves 8 'and 9' are each an integral part of a control housing 19 integrally connected to the cylinder head 3.
  • the mixture-compressing internal combustion engine 1 has a spark plug 11 which is arranged in the region of the cylinder axis 10 and which is arranged in a shaft 12 formed in the cylinder head 3 in order to achieve favorable charge combustion.
  • a shaft pipe 14 is provided to continue the shaft 12 beyond the cylinder head cover 13.
  • the shaft pipe 14 is fixed in the cylinder head 3 against rotation.
  • a bearing cover 15 common to both control shaft bearings 8 and 9.
  • the shaft pipe 14 has on its outer circumference a thread 16 for a clamping nut 17.
  • the clamping nut 17 serves to hold down or fasten the common bearing cover 15, which is additionally fastened in its free end regions.
  • the control shafts 6 and 7 are arranged closely adjacent to the shaft pipe 14 or the central fastening point in the area of the clamping nut 17, whereby on the one hand a narrow cylinder head 3 and on the other hand a very acute valve angle between the inlet valves 4 and the outlet valves 5 is achieved.
  • the spark plug 11 is arranged in the middle, this results in a very flat roof combustion chamber 18.
  • the inlet valves 4 and the outlet valves 5 are actuated by tappets 20 from the control shafts 6 and 7, the tappets 20 in Guides 21 of the one-piece with the cylinder head 3 control housing 19 are arranged.
  • an injection nozzle (not shown) takes the place of the spark plug 11.
  • the cylinder head 22 shown in half in cross section in FIG. 2 is equipped with a separate control housing 23.
  • the control housing 23 is used to arrange guides for plungers which interact with valves, not shown, as are shown, for example, in FIG. 1.
  • the separate control housing 23 further comprises the lower half of a split bearing 24 for a control shaft, not shown.
  • a common bearing cover 26 is assigned to the control shaft bearings 24 arranged on both sides of a shaft pipe 25 in a transverse plane and formed in a single or in two control housings 23.
  • the bearing cover 26 is penetrated by a shaft pipe 25 designed as a collar bushing, which further penetrates a cover 27 of the cylinder head 22.
  • the shaft pipe 25 is provided at its end on the cover side with a stop collar 28 which acts on the cover 27 via an elastic intermediate layer 29. Furthermore, a pressure ring 30 arranged coaxially with the intermediate layer 29 is provided between the stop collar 28 and the common bearing cover 26 of the control shaft bearings 24. Furthermore, the shaft pipe 25 on the stop collar 28 is designed with tool engagement surfaces to bring about a releasable connection of the shaft pipe 25 via a thread 31 in the cylinder head 22. With the arrangement described above, multiple fastening via the shaft pipe 25 is achieved, with an oil-tight seal at the same time the shaft pipe 25 and the cylinder head cover 27 is reached.
  • a cylinder head 32 shown in half in cross section in FIG. 3 is equipped with a shaft pipe 33 designed as a collar bushing.
  • This shaft pipe 33 acts essentially directly on the common bearing cover 35 of control shaft bearings 36 arranged in a transverse plane via a clamping head 34.
  • the end of the clamping head 34 also interacts with an elastic seal 38 arranged between the latter and a cylinder head cover 37.
  • the shaft pipe 33 serves to fix a common bearing cover 35 and a control housing 39 arranged separately from the cylinder head 32.
  • a common feature of the cylinder heads 22 and 32 of FIGS. 2 and 3 is that the shaft is formed by two shaft pipes 40 and 25 or 40 and 33, the shaft pipe 40 arranged adjacent to a combustion chamber 41 being fixed in the cylinder head 22 and 32 is.
  • the shaft pipe 40 on the combustion chamber side has an internal thread 42.
  • This arrangement of shaft pipes made of high-strength iron materials is particularly useful for light metal cylinder heads.
  • FIGS. 2 and 3 can be replaced by the fastening arrangement shown in FIG. 1, furthermore the fastening arrangements shown in FIGS. 2 and 3 are also suitable for an arrangement in the cylinder head 3 of FIG. 1.
  • an injection nozzle occurs on the spark plug 11 shown in FIG. 1.

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)
EP89109344A 1988-06-01 1989-05-24 Culasse pour moteur à combustion interne Expired - Lifetime EP0344597B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3818634 1988-06-01
DE3818634 1988-06-01

Publications (3)

Publication Number Publication Date
EP0344597A2 true EP0344597A2 (fr) 1989-12-06
EP0344597A3 EP0344597A3 (en) 1990-04-18
EP0344597B1 EP0344597B1 (fr) 1991-11-21

Family

ID=6355608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109344A Expired - Lifetime EP0344597B1 (fr) 1988-06-01 1989-05-24 Culasse pour moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP0344597B1 (fr)
DE (1) DE58900470D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434638A1 (fr) * 1989-12-22 1991-06-26 FIAT AUTO S.p.A. Moteur à combustion interne à allumage commandé et double arbre à cames en tête pour véhicules motorisés
EP0394832B1 (fr) * 1989-04-28 1992-03-25 Volkswagen Aktiengesellschaft Moteur à combustion avec au moins une culasse et un bloc cylindre
DE4119594A1 (de) * 1991-06-14 1993-02-25 Audi Ag Fluessigkeitsgekuehlter leichtmetall-zylinderkopf
WO1997030284A1 (fr) * 1996-02-17 1997-08-21 Audi Ag Culasse d'un moteur a combustion a injection directe
AT1683U3 (de) * 1997-04-03 1998-05-25 Avl List Gmbh Brennkraftmaschine mit mehreren hubventilen pro zylinder
EP1046804A1 (fr) * 1999-04-22 2000-10-25 Nissan Motor Company, Limited Culasse pour un moteur à combustion interne
AT16206U1 (de) * 2017-12-19 2019-03-15 Ge Jenbacher Gmbh & Co Og Zylinderkopf für eine Brennkraftmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087473A (en) * 1960-11-25 1963-04-30 Curtiss Wright Corp Engine
GB1256401A (en) * 1969-05-22 1971-12-08 Rubery Owen & Co Ltd Improvements in cylinder heads for internal combustion engines
GB8332318D0 (en) * 1983-12-02 1984-01-11 Austin Rover Group Cylinder head
JPS61167145A (ja) * 1985-01-19 1986-07-28 Mazda Motor Corp Ｄｏｈｃ多気筒エンジンのシリンダヘツド構造

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394832B1 (fr) * 1989-04-28 1992-03-25 Volkswagen Aktiengesellschaft Moteur à combustion avec au moins une culasse et un bloc cylindre
EP0434638A1 (fr) * 1989-12-22 1991-06-26 FIAT AUTO S.p.A. Moteur à combustion interne à allumage commandé et double arbre à cames en tête pour véhicules motorisés
DE4119594A1 (de) * 1991-06-14 1993-02-25 Audi Ag Fluessigkeitsgekuehlter leichtmetall-zylinderkopf
DE4119594C2 (de) * 1991-06-14 1998-07-30 Audi Ag Flüssigkeitsgekühlter Leichtmetall-Zylinderkopf
WO1997030284A1 (fr) * 1996-02-17 1997-08-21 Audi Ag Culasse d'un moteur a combustion a injection directe
AT1683U3 (de) * 1997-04-03 1998-05-25 Avl List Gmbh Brennkraftmaschine mit mehreren hubventilen pro zylinder
EP1046804A1 (fr) * 1999-04-22 2000-10-25 Nissan Motor Company, Limited Culasse pour un moteur à combustion interne
US6209506B1 (en) 1999-04-22 2001-04-03 Nissan Motor Co., Ltd. Cylinder head for internal combustion engine
AT16206U1 (de) * 2017-12-19 2019-03-15 Ge Jenbacher Gmbh & Co Og Zylinderkopf für eine Brennkraftmaschine

Also Published As

Publication number Publication date
DE58900470D1 (de) 1992-01-02
EP0344597B1 (fr) 1991-11-21
EP0344597A3 (en) 1990-04-18

Similar Documents

Publication Publication Date Title
EP0017279A1 (fr) Piston en deux ou plusieurs parties pour moteurs à combustion interne
DE2831566A1 (de) Motor
DE2106923A1 (de) Brennkraftmaschinenkolben
DE3751459T2 (de) Anordnung für keramisches Ventil.
DE3226238A1 (de) Kraftstoffsystem
EP0915252A2 (fr) Système d'injection par alimentation commune des injecteurs
EP0344597B1 (fr) Culasse pour moteur à combustion interne
DE2755612C2 (de) Flüssigkeitsgekühlter Zylinderdeckel für einen Viertakt-Dieselmotor
DE3842175A1 (de) Zylinderkopf mit deckel fuer brennkraftmaschinen
EP0359932A2 (fr) Piston refroidi par huile pour moteurs à combustion interne
DE4225363A1 (de) Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE10060682B4 (de) Zylinderkopf für eine Brennkraftmaschine
DE69411413T2 (de) Brennkraftmaschine
DE4023886A1 (de) Rollenstoessel mit einem hydraulischen ausgleichselement
DE2939063A1 (de) Antrieb fuer einspritzpumpen von brennkraftmaschinen
DE19942983B4 (de) Hydraulisches Spielausgleichselement
DE2331706A1 (de) Mit kontinuierlicher verbrennung arbeitende hubkolben-brennkraftmaschine
DE19601022A1 (de) Zylinderkopf
DE942058C (de) Luftgekuehlte Brennkraftmaschine
EP0262167A1 (fr) Pompe d'injection de carburant pour moteurs a combustion interne.
DE3419184A1 (de) Zuendverteileranordnung an brennkraftmaschinen
EP0210976B1 (fr) Moteur à combustion interne monocylindrique avec balayage du carter du vilebrequin
DE10126493B4 (de) Kolben mit zu den Hauptachsen geneigtem Kühlkanal
DE3602576A1 (de) Tauchkolben, insbesondere fuer verbrennungsmotoren, mit fest an den kolbenbolzen montiertem pleuel
DE473677C (de) Vorrichtung fuer Brennkraftmaschinen mit veraenderlichem Verdichtungsraum, insbesondere fuer Versuche mit Luftfahrzeugmotoren

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

Kind code of ref document: A2

Designated state(s): DE FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19900508

17Q First examination report despatched

Effective date: 19910503

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
REF Corresponds to:

Ref document number: 58900470

Country of ref document: DE

Date of ref document: 19920102

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89109344.5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19980420

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980521

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980528

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990525

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990524

EUG Se: european patent has lapsed

Ref document number: 89109344.5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000131

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020625

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050524