EP0180847B1 - Steuergehäuse für Zylinderkopf von Brennkraftmaschinen, mit zueinander im wesentlichen parallelen Gaswechselventilen - Google Patents

Steuergehäuse für Zylinderkopf von Brennkraftmaschinen, mit zueinander im wesentlichen parallelen Gaswechselventilen Download PDF

Info

Publication number
EP0180847B1
EP0180847B1 EP85113420A EP85113420A EP0180847B1 EP 0180847 B1 EP0180847 B1 EP 0180847B1 EP 85113420 A EP85113420 A EP 85113420A EP 85113420 A EP85113420 A EP 85113420A EP 0180847 B1 EP0180847 B1 EP 0180847B1
Authority
EP
European Patent Office
Prior art keywords
bearing
valve
web
drive housing
cylinder head
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.)
Expired
Application number
EP85113420A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0180847A1 (de
Inventor
Jiri Seidl
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
Priority to AT85113420T priority Critical patent/ATE39164T1/de
Publication of EP0180847A1 publication Critical patent/EP0180847A1/de
Application granted granted Critical
Publication of EP0180847B1 publication Critical patent/EP0180847B1/de
Expired 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
    • 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

Definitions

  • the invention relates to a control housing for the cylinder head of internal combustion engines, which is formed separately from the cylinder head, and is based on the preamble of the independent claim from DE-A-1 476 024.
  • the control housing is formed in one piece with the cylinder head.
  • this cylinder head at least two identical, parallel gas exchange valves are also provided.
  • the relatively small mutual spacing of the parallel valves on the one hand and the endeavor of relatively large diameters for the cup tappets on the other hand leads to a relatively narrow web between the adjacent openings for guiding the cup tappets.
  • the lower part of the bearing which is integral with the control housing is used in the manufacture of the openings for guiding the bucket tappets on both opposite ends except for the wall thickness of the web. cut.
  • this camshaft bearing is equipped with bearing shells for the formation of a perfect hydrodynamic lubricating film.
  • bearing shells represent additional components, the effort of which increases with the number of cylinders and that of the camshafts on an internal combustion engine. Furthermore, since the contours of cylinders penetrating at right angles are machined during the manufacture of the cylindrical openings on the one hand and the bearing bore on the other, there is always a work sequence with an interrupted cut in the area of the intersections. Thus, at least in the case of the true-to-contour production of a plurality of aligned camshaft bearing bores, an increased outlay on production means is required.
  • a cylinder head in which the guide bores for the bucket tappets are formed in sprues of the cylinder head, the transverse wall provided between the valves of a pair of valves of a cylinder being designed to be detachable from the cylinder head for the arrangement of a camshaft bearing.
  • the transverse wall which has a camshaft bearing can be designed in the form of a U-shaped bracket which, with its open side, points towards the cylinder head and offers space for the sprues of the guide bores between its two legs.
  • Such transverse walls designed as U-shaped brackets cannot be designed stiffly enough transversely to the camshaft axis of rotation, so that this results in an overall insufficiently stiff valve train.
  • the invention has for its object to show a design for a control housing according to the preamble of the independent claim with a camshaft bearing arranged between closely adjacent openings in which contours of right-angled cylinders of the camshaft bearing bore as well as openings and thus machining of such intersections are avoided .
  • the lower bearing part of the camshaft bearing is cut through the closely adjacent openings, but these sections end at a predetermined distance from the bearing surface in the lower bearing part, so that a bearing wall extending to both sides of the web remains in the area of the first part of the lower bearing part.
  • the camshaft can be stored directly in the control housing without the interposition of bearing shells.
  • lubrication oil supply via a hollow camshaft with radial supply channels to the bearing ensures both its lubrication oil supply and the formation of a perfect hydrodynamic lubrication film.
  • the lubricating oil can be supplied to the bearing with a customary amount at a known pressure, so that the circulation of a larger amount of lubricating oil is avoided.
  • the bearing wall according to the invention offers the advantage of broad support of the arranged bearing shell, whereby damage to the bearing shell caused by edge pressure in particular is avoided.
  • a bearing wall in the extension between its end faces to the width of the camshaft bearing advantageously results in a stiffening of the control housing.
  • the one-piece connection of the bearing wall to the web between the openings is particularly beneficial for the stiffening of the control housing.
  • An additional stiffening is achieved according to claim 2 for the control housing in that the web is connected to each end face of the bearing wall by means of a continuously running transition.
  • the web is followed by a step-like transition with a flat shoulder on the bearing wall.
  • the step-shaped shoulder for a bucket tappet with hydraulic valve play compensation element serves as a stop fixed to the housing, such a stop for valve control with an automatic play compensation device being known from DE-A 33 36 240.
  • This allows the tappet to operate in the Internal combustion engine are kept away from the base circle in the base circle phase, which reduces the friction in the valve train.
  • a control housing built from two parts is conceivable, the flat shoulders lying in the parting plane of the part comprising the camshaft bearing.
  • the control housing according to the invention is suitable for formation in die casting. This is also because the omission of the intersections of the openings with the part of the bearing bore in the lower part of the bearing means that the drawing cores required for this do not interfere with one another. This applies not only to a control housing, which is designed as a single piece only for two parallel valves.
  • the invention also promotes the combination of several, in a multi-cylinder internal combustion engine required control housing according to claim 6 into a one-piece component in die-cast design.
  • the control housing can be formed with relatively thin walls.
  • the bearing wall according to claim 5 has the further advantage of making spray holes supplied with lubricating oil via a circumferential groove in the bearing collar of the camshaft in such a way that the slideways of the cams and bucket tappets are optimally lubricated.
  • a control housing 1 for separate arrangement on a cylinder head, not shown, of a valve-controlled internal combustion engine comprises, for a cylinder of the internal combustion engine, openings 2 and 3 arranged in groups for receiving valve tappets 4.
  • the openings 2, 3 are open at both ends 5, 6, specifically both towards the cylinder head and towards a camshaft 7.
  • the camshaft 7 is guided in the control housing 1 by means of a bearing 8.
  • the split bearing 8 has in its lower bearing part 8 'a slide bearing bore 9 which extends essentially over its width “x” for a bearing collar 10 of the camshaft 7.
  • the bearing 8 is arranged between the openings 2, 3 for the tappets 4, the tappets 4 interacting with valves (21, 22 in FIG.
  • the bearing 8 is in its lower bearing part 8 'with a web 11 between the openings 2 and 3 in the control housing 1 in connection. It is characteristic of this web 11 that it ends at a wall thickness “s” that is smaller than the width “x” of the bearing 8 due to openings 2, 3 that are close together on the bearing side at a predetermined distance “y” from the bearing surface 12 of the slide bearing bore 9.
  • a bearing wall 9 ' is thus achieved in the area of the web 11, as a result of which the axial extension of the plain bearing bore 9 in the lower bearing part 8' over the width "x” of the bearing 8 is retained. This allows the bearing 8 to be properly supplied with lubricating oil via bores 13 and 14 in the camshaft 7.
  • the web 11 is connected to an end face 16 of the bearing 8 by means of a continuously running transition 15.
  • the transition 15 can, for example, be formed in a control housing 1 designed as a die-cast part.
  • a further embodiment of the transition is shown in the opening 3, a step-shaped transition with a flat shoulder 18 adjoining the web 11.
  • This paragraph 18 can serve as a machine-fixed stop for a tappet 4 equipped with a hydraulic valve lash compensation element, as a result of which the tappet 4 is held with play relative to the base circle 19 of a cam 20 of the camshaft 7 during operation of the internal combustion engine in the base circle phase. This avoids friction losses in the base circle phase.
  • lubricating oil bores 23, 24 penetrating the bearing wall 9' can be arranged in such a way that a lubricating oil spray jet onto the tappet 4 in front of the respective cam 20 of the camshaft 7 is reached.
  • the lubricating oil bores 23, 24 penetrating approximately from the center of the bearing wall 12 from the bearing wall 9 ' are connected to a partial circumferential groove 25 in the bearing collar 10 of the camshaft 7 in an oil-carrying manner.
  • the partial circumferential groove 25 is in turn supplied with lubricating oil from the central bore 13 in the camshaft 7 via the radially directed bore 14.
  • the control housing 1 can be provided as a single piece for two gas exchange valves arranged in parallel.
  • the control housing provided for a valve row can be combined to form a one-piece component.
  • the individual control housings 1 are in fixed connection via their lower bearing parts 8 'with longitudinal walls 26 and 27.
  • the screw connection 29 provided for a bearing cover 28 of the camshaft bearing 8, which is anchored in the cylinder head, is used for the releasable fastening of the control housing 1, which is formed separately from the cylinder head.
  • the control housing 1 is preferably used in a multi-cylinder internal combustion engine with V-shaped valves arranged in a row in pairs in a cylinder head with connecting surfaces formed at right angles to the valves for the detachably fastened control housing assigned to each valve row.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP85113420A 1984-10-29 1985-10-23 Steuergehäuse für Zylinderkopf von Brennkraftmaschinen, mit zueinander im wesentlichen parallelen Gaswechselventilen Expired EP0180847B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113420T ATE39164T1 (de) 1984-10-29 1985-10-23 Steuergehaeuse fuer zylinderkopf von brennkraftmaschinen, mit zueinander im wesentlichen parallelen gaswechselventilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3439553 1984-10-29
DE3439553 1984-10-29

Publications (2)

Publication Number Publication Date
EP0180847A1 EP0180847A1 (de) 1986-05-14
EP0180847B1 true EP0180847B1 (de) 1988-12-07

Family

ID=6249017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113420A Expired EP0180847B1 (de) 1984-10-29 1985-10-23 Steuergehäuse für Zylinderkopf von Brennkraftmaschinen, mit zueinander im wesentlichen parallelen Gaswechselventilen

Country Status (6)

Country Link
US (1) US4711203A (ar)
EP (1) EP0180847B1 (ar)
JP (1) JPS62500675A (ar)
AT (1) ATE39164T1 (ar)
DE (1) DE3566708D1 (ar)
WO (1) WO1986002700A1 (ar)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5186129A (en) * 1992-03-30 1993-02-16 Ford Motor Company Intermittent oiling system for an internal combustion engine camshaft and valve train
JP3311502B2 (ja) * 1994-07-13 2002-08-05 本田技研工業株式会社 内燃機関のカム摺動面潤滑構造
US5797362A (en) * 1997-03-24 1998-08-25 Taller; Myron S. Combustion engine with adjustable cam and lubrication means
JP2000120422A (ja) * 1998-10-12 2000-04-25 Yamaha Motor Co Ltd エンジンのカム軸潤滑構造
JP3695247B2 (ja) * 1999-09-28 2005-09-14 スズキ株式会社 ４サイクルエンジンの潤滑構造
US6460504B1 (en) * 2001-03-26 2002-10-08 Brunswick Corporation Compact liquid lubrication circuit within an internal combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1476024A1 (de) * 1964-04-10 1970-07-09 British Aluminium Co Ltd Zylinder- und Zylinderkopfeinheit fuer Verbrennungskraftmaschinen

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209496A (en) * 1939-02-15 1940-07-30 George Yates Automatic compression control for engines
US2674904A (en) * 1950-04-22 1954-04-13 Gen Motors Corp Camshaft
US3080704A (en) * 1956-08-11 1963-03-12 Daimler Benz Ag Internal combustion engine with exhaust gas turbine
DE1221846B (de) * 1963-07-13 1966-07-28 Volkswagenwerk Ag Ventilspieleinstellvorrichtung fuer Brennkraftmaschinen
US3306271A (en) * 1966-01-19 1967-02-28 Gen Motors Corp Internal combustion engine with single overhead camshaft and hemispherical combustion chambers
US3482555A (en) * 1968-06-24 1969-12-09 Int Harvester Co Internal combustion engine valve spring arrangement
US3672338A (en) * 1968-12-27 1972-06-27 Isuzu Motors Ltd Internal combustion engine with overhead valve mechanism
NL7018294A (ar) * 1970-12-15 1972-06-19
AT329323B (de) * 1972-11-06 1976-05-10 Denzel Kraftfahrzeug Wolfgang Zylinderkopf fur brennkraftmaschinen
DE2353736C2 (de) * 1973-10-26 1982-09-09 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Vorrichtung zum Schmieren der Nocken von Nockenwellen bei Brennkraftmaschinen
AT393297B (de) * 1979-03-23 1991-09-25 Denzel Kraftfahrzeug Wolfgang Zylinderkopf fuer brennkraftmaschinen
DE3123527A1 (de) * 1980-11-27 1982-06-24 Volkswagenwerk Ag, 3180 Wolfsburg "hubkolben-brennkraftmaschine mit oelraeumen zur kuehlung"
US4448155A (en) * 1982-06-03 1984-05-15 Eaton Corporation Guide for roller cam follower
FR2540553A1 (fr) * 1983-02-03 1984-08-10 Renault Dispositif de commande a came, notamment pour soupapes de moteurs a combustion interne
JPS59158305A (ja) * 1983-02-26 1984-09-07 Mazda Motor Corp エンジンのバルブタイミング制御装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1476024A1 (de) * 1964-04-10 1970-07-09 British Aluminium Co Ltd Zylinder- und Zylinderkopfeinheit fuer Verbrennungskraftmaschinen

Also Published As

Publication number Publication date
ATE39164T1 (de) 1988-12-15
WO1986002700A1 (en) 1986-05-09
DE3566708D1 (en) 1989-01-12
EP0180847A1 (de) 1986-05-14
JPS62500675A (ja) 1987-03-19
US4711203A (en) 1987-12-08
JPH0447123B2 (ar) 1992-08-03

Similar Documents

Publication Publication Date Title
DE3436426C2 (ar)
DE3751935T2 (de) Ventilantriebsvorrichtung in einer Brennkraftmaschine
DE4326159C5 (de) Wassergekühlte mehrzylindrige Brennkraftmaschine mit V-förmig angeordneten Zylinderreihen
DE3634877C2 (ar)
DE69101915T2 (de) Verbundene rotierende und hin- und hergehende bewegung.
DE3515850A1 (de) Ventilbetaetigungseinrichtung fuer eine obengesteuerte brennkraftmaschine
DE69027871T2 (de) Zylinderkopf und Ventiltriebanordnung für Mehrventil-Brennkraftmaschine
DE102009009149B4 (de) Ölsystem zum wahlweisen Abschalten von Ventilen für angegebene Zylinder
EP0806552B1 (de) Zylinderkopfanordnung einer Brennkraftmaschine
DE69612087T2 (de) Kipphebelvorrichtung für brennkraftmaschine
AT393297B (de) Zylinderkopf fuer brennkraftmaschinen
EP0180847B1 (de) Steuergehäuse für Zylinderkopf von Brennkraftmaschinen, mit zueinander im wesentlichen parallelen Gaswechselventilen
DE3805590A1 (de) Ventilbetaetigung fuer brennkraftmaschinen
DE69414557T2 (de) Zylinderkopfanordnung für eine Mehrventil-Brennkraftmaschine mit obenliegender Nockenwelle
DE19618401C1 (de) Zylinderkopfanordnung einer Brennkraftmaschine
DE19723342C1 (de) Zylinderkopf und Gießkern zur Herstellung von Ölkanälen
AT402321B (de) Zylinderkopf für brennkraftmaschinen
EP0774575B1 (de) Gegossener Zylinderkopf einer mehrzylindrigen Brennkraftmaschine
EP0845582A1 (de) Ventilsteuerung für eine mit Hubventilen zum Ladungswechsel ausgerüstete Brennkraftmaschine
DE102004034912B4 (de) Zylinderkopfstruktur eines Motors
DE2943560C2 (de) Vorrichtung für einen Verbrennungsmotor
DE3009062C2 (de) Zylinderkopf für eine Brennkraftmaschine
DE4039075A1 (de) Ventiltrieb fuer zumindest zwei gleichzeitig betaetigbare hubventile
DE69905809T2 (de) Schmierungssystem für einen Kolbenverdichter einer aufgeladenen Brennkraftmaschine
DE69315321T2 (de) Brennkraftmaschine

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: A1

Designated state(s): AT DE FR GB IT SE

17P Request for examination filed

Effective date: 19860614

17Q First examination report despatched

Effective date: 19870325

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB IT SE

REF Corresponds to:

Ref document number: 39164

Country of ref document: AT

Date of ref document: 19881215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3566708

Country of ref document: DE

Date of ref document: 19890112

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 85113420.5

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20041021

Year of fee payment: 20

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

Ref country code: AT

Payment date: 20041025

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20041027

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20041028

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20041124

Year of fee payment: 20

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 EXPIRATION OF PROTECTION

Effective date: 20051022

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

EUG Se: european patent has lapsed