WO1999066176A1 - Culasse pour moteurs a combustion interne et son procede de production - Google Patents

Culasse pour moteurs a combustion interne et son procede de production Download PDF

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Publication number
WO1999066176A1
WO1999066176A1 PCT/EP1999/002576 EP9902576W WO9966176A1 WO 1999066176 A1 WO1999066176 A1 WO 1999066176A1 EP 9902576 W EP9902576 W EP 9902576W WO 9966176 A1 WO9966176 A1 WO 9966176A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
cylinder head
camshaft
screws
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.)
Ceased
Application number
PCT/EP1999/002576
Other languages
German (de)
English (en)
Inventor
Erwin Ditschun
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Priority to EP99919247A priority Critical patent/EP1086300B1/fr
Priority to DE59900479T priority patent/DE59900479D1/de
Priority to JP2000554967A priority patent/JP2002518623A/ja
Publication of WO1999066176A1 publication Critical patent/WO1999066176A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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 cylinder head for internal combustion engines with one or more bearing lanes for camshafts and bearing axles for rocker arms according to the preamble of the main claim and a method for its production.
  • the camshaft runs in split bearings of the cylinder head with screwed-on bearing bridges. Above, but next to the camshaft bearings, receptacles for bearing axles of rocker arms are arranged on the bearing bridges, which are driven by the adjacent camshaft.
  • a screw is positioned, which connects the respective bearing bracket to the cylinder head.
  • a depression is necessary which penetrates the respective receptacle of the bearing axis.
  • the fastening screw passing through the bearing axis of the rocker arms is screwed into the bearing bracket, see FIG. 3 of the document mentioned at the beginning.
  • the disadvantage is that high tensile forces are transmitted via the fastening screw from the bearing axis of the rocker arm to the bearing bracket and the cylinder head.
  • the invention has for its object to achieve a favorable derivation of the tensile forces from the cylinder head, which occur on the bearing axis of the rocker arm and are transmitted by their fastening screws in a generic cylinder head.
  • the solution to these tasks is achieved with the features of claim 1.
  • the tensile forces from the rocker arm drive are counter-supported directly and without loading the cylinder head on the cylinder block.
  • FIG. 2 shows the left-hand cutout, according to FIG. 1, in the assembled state for machining the bearings for the camshafts and the receptacle for the bearing axis of the rocker arms.
  • FIG. 1 shows sections of a cross section of the cylinder head 1 according to the invention, which extends through a plane with the screwing of a bearing bracket 2 for a two-part camshaft bearing 3.
  • the bearing bracket 2 is also designed as a carrier of a bearing axis 4 for rocker arms - not shown - which are preferably also used to drive pump-nozzle units.
  • the bearing axis 4 runs directly next to and above the camshaft bearings 3 and is held braced against receptacles 31 in the bearing bracket 2 by means of screws 9 guided through them.
  • this head 6 of the tensioning screw 5 there is an inner profile 7 and behind this an inner thread 8 adapted to the core cross section of the inner profile 7.
  • the screw 9 projecting through the bearing axis 4 and bearing bracket 2 is screwed into the internal thread 8 of the head 6 of the clamping screws 5.
  • the cylinder head 1 has a clamping surface 13 below the top surface ZK next to the camshaft bearing 3 in a depression 11, which has a larger outer diameter than the head 6 of the clamping screw 5.
  • the tensioning screw 5 presses against the cylinder head 1 in the tensioned state via a pressure ring 14 adapted to the larger outside diameter of the tensioning surface 13.
  • an internal thread 16 is arranged in the cylinder head 1, the inside diameter of which is at least larger than the outer diameter of the external thread 17 or the possibly larger shaft diameter of the clamping screw 5.
  • a similar arrangement with a clamping screw 5 is also present on the right camshaft bearing 3 in FIG. 1.
  • the clamping screws 5 transmit the forces for bracing the cylinder head 1 and bearing bracket 2 or the bearing axis 4 directly to the cylinder block. Deformations of the cylinder head 1 or the bearing bracket 2 due to high forces occurring on the bearing axis 4 are avoided. Due to this effect, the solution according to the invention is particularly advantageous for designs of the cylinder head 1 or the bearing bracket 2 made of light metal.
  • An auxiliary clamping surface 20 on the bearing bridge 2 lying directly next to and above the camshaft bearings 3 extends around the clamping screw axis SA. It is preferably in the clamping plane Sp of further screws 21 and 23 for fastening the bearing bracket 2 to the cylinder head 1.
  • the cylinder head 1 there is an oil channel 24 loaded with pressure oil. From it runs an oil supply channel 25 to the camshaft bearing 3, which also opens into a depression 11 in the passage area of the clamping screw 5. Pressure oil arrives from there to the bearing axis 4, which has a central distribution hole - not shown - for supplying the lubrication points on the rocker arms.
  • Bearing brackets 2 can be an integral part of a bearing frame attached to the cylinder head 1, which comprises the entire contour of the cylinder head 1.
  • the mounting screws 30 act against the auxiliary clamping surfaces 20 on the bearing bracket 2 and are screwed into the internal thread 16 arranged below the clamping surfaces 13 in the cylinder head 1.

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)

Abstract

L'invention concerne une culasse pour moteurs à combustion interne comprenant un ou plusieurs passages pour des arbres à cames et des axes de paliers pour culbuteurs qui actionnent de préférence une unité pompe-buse. Cette culasse se présente de la façon suivante: au moins un arbre à cames est monté dans la culasse, dans des paliers divisés présentant des ponts de paliers vissés; au niveau de ces derniers, des logements pour des axes de paliers de culbuteurs entraînés par l'arbre à cames adjacent sont placés à côté et au-dessus des paliers de l'arbre à cames; les axes de paliers sont maintenus serrés contre le pont de paliers au moyen de vis faisant saillie à travers les axes de paliers. L'invention vise à permettre d'obtenir une déviation avantageuse des forces de traction de la culasse, qui apparaissent au niveau des axes de paliers des culbuteurs et sont transmises par leurs vis de fixation. A cet effet, une vis de serrage (5) prenant appui sur la culasse (1), faisant saillie vers le bloc moteur et venant en contact avec ce dernier, est placée avec une tête cylindrique (6) de longueur supérieure, à côté du palier d'arbre à cames (3); cette tête cylindrique (6) présente un profil intérieur (7) derrière lequel se trouve un filet intérieur (8) adapté à la section de noyau du profil intérieur (7); les vis (9) faisant saillie à travers les axes de paliers (4) sont vissées dans le filet intérieur (8) de la tête (6) des vis de serrage (5).
PCT/EP1999/002576 1998-06-12 1999-04-16 Culasse pour moteurs a combustion interne et son procede de production Ceased WO1999066176A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99919247A EP1086300B1 (fr) 1998-06-12 1999-04-16 Culasse pour moteurs a combustion interne et son procede de production
DE59900479T DE59900479D1 (de) 1998-06-12 1999-04-16 Zylinderkopf für verbrennungsmotoren und verfahren zu seiner herstellung
JP2000554967A JP2002518623A (ja) 1998-06-12 1999-04-16 内燃機関用シリンダヘッドとその製作方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19826286A DE19826286A1 (de) 1998-06-12 1998-06-12 Zylinderkopf für Verbrennungsmotoren und Verfahren zu seiner Herstellung
DE19826286.8 1998-06-12

Publications (1)

Publication Number Publication Date
WO1999066176A1 true WO1999066176A1 (fr) 1999-12-23

Family

ID=7870734

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/002576 Ceased WO1999066176A1 (fr) 1998-06-12 1999-04-16 Culasse pour moteurs a combustion interne et son procede de production

Country Status (5)

Country Link
EP (1) EP1086300B1 (fr)
JP (1) JP2002518623A (fr)
CN (1) CN1088146C (fr)
DE (2) DE19826286A1 (fr)
WO (1) WO1999066176A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1326436B1 (fr) * 2001-12-28 2013-02-13 Sony Corporation Affichage d'information

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19752381A1 (de) * 1997-11-26 1999-05-27 Volkswagen Ag Zylinderkopf für eine Brennkraftmaschine mit Pumpedüse-Einheit
DE102005020588A1 (de) * 2005-05-03 2006-11-09 Bayerische Motoren Werke Ag Verbindungsanordnung
JP4365373B2 (ja) * 2006-01-19 2009-11-18 トヨタ自動車株式会社 内燃機関のカムシャフト支持構造
DE102008007091B4 (de) * 2008-01-31 2010-06-24 Polytec Automotive Gmbh & Co. Kg Nockenwellenmodul
WO2011076959A1 (fr) * 2009-12-23 2011-06-30 Amadeo Marti Carbonell, S.A. Dispositif pour le montage de la culasse d'un moteur
CN103352766B (zh) * 2013-08-06 2015-09-30 中国嘉陵工业股份有限公司（集团） 摩托车发动机气缸紧固结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB143898A (en) * 1915-09-06 1921-03-31 Daimler Motoren Improvements in and connected with engine valve gear casings
US4430968A (en) * 1981-03-31 1984-02-14 Yamaha Hatsudoki Kabushiki Kaisha Cylinder head fastening structure for internal combustion engines
US4538561A (en) * 1983-06-20 1985-09-03 Yanmar Diesel Engine Co., Ltd. Valve arm chamber apparatus for diesel engine
EP0228533A2 (fr) * 1985-11-26 1987-07-15 Audi Ag Moteur à combustion interne avec au moins un arbre à came en tête
EP0255707A2 (fr) * 1986-08-05 1988-02-10 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Agencement d'un appareil auxiliaire par l'assemblage à vis d'un élément de machine hautement chargé, notamment d'un moteur à combustion interne
DE4232783A1 (de) 1992-07-10 1994-01-13 Volkswagen Ag Zylinderkopf für eine Brennkraftmaschine mit einer Pumpedüse-Einheit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3641129C1 (de) * 1986-12-02 1987-07-30 Daimler Benz Ag Vorrichtung zur Lagerung von zwei Nockenwellen im Zylinderkopf einer mehrzylindrigen Reihenbrennkraftmaschine
DE4215051C2 (de) * 1992-05-07 1997-05-28 Audi Ag Lageranordnung
DE19634541A1 (de) * 1995-09-09 1997-03-13 Volkswagen Ag Verfahren zum Herstellen einer Lageranordnung in einem Zylinderkopf einer Brennkraftmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB143898A (en) * 1915-09-06 1921-03-31 Daimler Motoren Improvements in and connected with engine valve gear casings
US4430968A (en) * 1981-03-31 1984-02-14 Yamaha Hatsudoki Kabushiki Kaisha Cylinder head fastening structure for internal combustion engines
US4538561A (en) * 1983-06-20 1985-09-03 Yanmar Diesel Engine Co., Ltd. Valve arm chamber apparatus for diesel engine
EP0228533A2 (fr) * 1985-11-26 1987-07-15 Audi Ag Moteur à combustion interne avec au moins un arbre à came en tête
EP0255707A2 (fr) * 1986-08-05 1988-02-10 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Agencement d'un appareil auxiliaire par l'assemblage à vis d'un élément de machine hautement chargé, notamment d'un moteur à combustion interne
DE4232783A1 (de) 1992-07-10 1994-01-13 Volkswagen Ag Zylinderkopf für eine Brennkraftmaschine mit einer Pumpedüse-Einheit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1326436B1 (fr) * 2001-12-28 2013-02-13 Sony Corporation Affichage d'information

Also Published As

Publication number Publication date
EP1086300A1 (fr) 2001-03-28
JP2002518623A (ja) 2002-06-25
EP1086300B1 (fr) 2001-11-28
CN1088146C (zh) 2002-07-24
DE19826286A1 (de) 1999-12-16
DE59900479D1 (de) 2002-01-10
CN1304476A (zh) 2001-07-18

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