WO1999066176A1 - Cylinder head for internal combustion engines and method for producing same - Google Patents

Cylinder head for internal combustion engines and method for producing same Download PDF

Info

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
Application number
PCT/EP1999/002576
Other languages
German (de)
French (fr)
Inventor
Erwin Ditschun
Original Assignee
Volkswagen Aktiengesellschaft
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 Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Priority to DE59900479T priority Critical patent/DE59900479D1/en
Priority to JP2000554967A priority patent/JP2002518623A/en
Priority to EP99919247A priority patent/EP1086300B1/en
Publication of WO1999066176A1 publication Critical patent/WO1999066176A1/en

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

The invention relates to a cylinder head for internal combustion engines, comprising one or more passages for mounting camshafts and bearing axles for rocker arms which preferably also actuate a pump-nozzle unit. The cylinder head has the following structure: at least one camshaft is mounted in the cylinder head in divided bearings having screwed on bearing bridges; next to and above the camshaft bearings seats are arranged at the level of the bearing bridges for bearing axles of rocker arms driven by the adjacent camshafts; the bearing axles are held tightly against the bearing bridge by means of screws projecting through them. The aim of the invention is to provide a way of deflecting the tensile forces from the cylinder head which occur at the level of the bearing axle of the rocker arms and are transmitted by their fixing screws. This is achieved by the following characteristics: next to the camshaft bearing (3) a tightening screw (5) with a longer cylindrical head (6) is arranged which is supported by the cylinder head (1) and extends as far as the cylinder block and engages same; the longer cylindrical head (6) has an internal profile (7) and, behind it, an inner thread (8) which is adjusted to the core cross-section of the internal profile (7); the screws (9) projecting through the bearing axles (4) are screwed into the inner thread (8) of the head (6) of the tightening screws (5).

Description

Zylinderkopf für Verbrennungsmotoren und Verfahren zu seiner Herstellung Cylinder head for internal combustion engines and process for its manufacture
Die Erfindung betrifft einen Zylinderkopf für Verbrennungsmotoren mit einer oder mehreren Lagergassen für Nockenwellen und Lagerachsen für Kipphebel gemäß dem Oberbegriff des Hauptanspruches sowie ein Verfahren zu seiner Herstellung.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.
Vorbekannt ist die gattungsgemäße Ausführung eines Zylinderkopfes durch die Schrift DE 42 32 783 A1 , bei der einer Lagergasse für die Nockenwelle jeweils für jeden Zylinder eine Lagerachse für einen Kipphebel zum Antreiben einer Pumpe-Düse-Einheit zugeordnet ist.The generic design of a cylinder head is known from the document DE 42 32 783 A1, in which a bearing axis for a rocker arm for each rocker arm for driving a pump-nozzle unit is assigned to each bearing lane for the camshaft.
Die Nockenwelle läuft in geteilten Lagern des Zylinderkopfes mit aufgeschraubten Lagerbrücken. Oberhalb, jedoch neben den Nockenwellenlagern, sind an den Lagerbrücken Aufnahmen für Lagerachsen von Kipphebeln angeordnet, die durch die benachbarte Nokkenwelle angetrieben werden.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.
Zwischen den Mittelachsen von der Lagergasse der Nockenwelle und den Aufnahmen für die Lagerachsen der Kipphebel ist jeweils eine Schraube positioniert, welche die jeweilige Lagerbrücke mit dem Zylinderkopf verbindet. Um eine Lage ihres Kopfes unterhalb der Lagerachse zu realisieren ist eine Einsenkung notwendig, die die jeweilige Aufnahme der Lagerachse durchdringt. Unmittelbar neben dieser Schraube ist die die Lagerachse der Kipphebel durchreichende Befestigungsschraube in der Lagerbrücke verschraubt, - siehe Fig. 3 der eingangs genannten Schrift.Between the center axes of the camshaft bearing lane and the mountings for the rocker arm bearing axes, a screw is positioned, which connects the respective bearing bracket to the cylinder head. In order to realize a position of her head below the bearing axis, a depression is necessary which penetrates the respective receptacle of the bearing axis. Immediately next to this screw, 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.
Nachteilig ist, daß hohe Zugkräfte über die Befestigungsschraube von der Lagerachse der Kipphebel auf die Lagerbrücke und den Zylinderkopf übertragen werden. Der Erfindung liegt die Aufgabe zugrunde, bei einem gattungsgemäßen Zylinderkopf eine günstige Ableitung der Zugkräfte vom Zylinderkopf, die an der Lagerachse der Kipphebel auftreten und von deren Befestigungsschrauben übertragen werden, zu erzielen. Die Lösung dieser Aufgaben gelingt mit den Merkmalen des Patentanspruches 1. Die Zugkräfte aus dem Kipphebeltrieb werden direkt und ohne Belastung des Zylinderkopfes am Zylinderblock gegengelagert. Durch das erfindungsgemäße Verfahren gemäß Nebenanspruch, wird bei der Herstellung von Zylinderkopf und Lagerbrücken durch ein betriebsgerechtes Verspannen eine genaue Bearbeitung der Lagergasse der Nockenwelle sowie der Aufnahmen für die Lagerachsen der Kipphebel erzielt. Anhand einer Zeichnung wird nachfolgend ein Ausführungsbeispiel der Erfindung beschrieben.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. By the method according to the invention, a precise machining of the bearing lane of the camshaft and the receptacles for the bearing axles of the rocker arms is achieved in the manufacture of the cylinder head and bearing bridges by an operationally appropriate bracing. An exemplary embodiment of the invention is described below with reference to a drawing.
Es zeigt:It shows:
Fig. 1 beidseitige Ausschnitte eines erfindungsgemäßen Zylinderkopfes im Querschnitt einer Ebene quer zu den Mittelachsen der Nockenwelle mit der Verschraubung einer Lagerbrücke,1 cutouts on both sides of a cylinder head according to the invention in cross section of a plane transverse to the central axes of the camshaft with the screwing of a bearing bracket,
Fig.2 den linksseitigen Ausschnitt, gemäß Fig.1 , im montierten Zustand zum Bearbeiten der Lager für die Nockenwellen und der Aufnahme für die Lagerachse der Kipphebel.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.
In Fig.1 sind beidseitig Ausschnitte von einem Querschnitt des erfindungsgemäßen Zylinderkopfes 1 gezeigt, der durch eine Ebene mit der Verschraubung einer Lagerbrücke 2 für eine zweigeteilte Nockenwellenlagerung 3 verläuft.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.
Die Lagerbrücke 2 ist zusätzlich als Träger einer Lagerachse 4 für Kipphebel - nicht dargestellt - ausgeführt, die vorzugsweise auch zum Antrieb von Pumpe-Düse-Einheiten dienen. Die Lagerachse 4 verläuft unmittelbar neben und überhalb der Nockenwellenlager 3 und ist mittels durch diese geführte Schrauben 9 gegen Aufnahmen 31 in der Lagerbrücke 2 verspannt gehalten.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.
Unmittelbar neben dem Nockenwellenlager 3 ist eine am Zylinderkopf 1 abgestützte, zur Deckfläche ZB eines Zylinderblocks - nicht dargestellt - reichende und dort eingeschraubte Spannschraube 5 mit einem längeren zylindrischen Kopf 6 angeordnet. In diesem Kopf 6 der Spannschraube 5 ist ein Innenprofil 7 und hinter diesem liegend ein dem Kernquerschnitt des Innenprofils 7 angepaßtes Innengewinde 8 ausgeführt. Die die Lagerachse 4 und Lagerbrücke 2 durchragende Schraube 9 ist im Innengewinde 8 des Kopfes 6 der Spannschrauben 5 eingeschraubt.Immediately next to the camshaft bearing 3, a tensioning screw 5 with a longer cylindrical head 6, which is supported on the cylinder head 1 and extends to the top surface ZB of a cylinder block (not shown) and is screwed in there, is arranged. In 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.
Der Zylinderkopf 1 weist unterhalb der Deckfläche ZK neben dem Nockenwellenlager 3 in einer Einsenkung 11 eine Spannfläche 13 auf, die einen größeren Außendurchmesser als der Kopf 6 der Spannschraube 5 hat. Die Spannschraube 5 drückt im verspannten Zustand über einen, dem größeren Außendurchmesser der Spannfläche 13 angepaßten Druckring 14 gegen den Zylinderkopf 1. Ausgehend von der Spannfläche 13 ist ein Innengewinde 16 im Zylinderkopf 1 angeordnet, dessen Innendurchmesser mindestens größer als der Außendurchmesser des Außengewindes 17 oder des ggf. größeren Schaftdurchmessers der Spannschraube 5 ist.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. Starting from 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.
Eine gleichartige Anordnung mit einer Spannschraube 5 ist auch am rechten Nockenwellenlager 3 in Fig.1 vorhanden. In diesem Bereich wird die Lagerbrücke 2 mit einer in die Spannschraube 5 eingreifenden Schraube 21 unter Zwischenschalten eines DruckringesA similar arrangement with a clamping screw 5 is also present on the right camshaft bearing 3 in FIG. 1. In this area, the bearing bridge 2 with a screw 21 engaging in the clamping screw 5 with the interposition of a pressure ring
22 gegen den Zylinderkopf 1 verspannt.22 braced against the cylinder head 1.
Die Spannschrauben 5 übertragen die Kräfte zum Verspannen von Zylinderkopf 1 und Lagerbrücke 2 bzw. auch der Lagerachse 4 direkt zum Zylinderblock. Verformungen des Zylinderkopfes 1 oder der Lagerbrücke 2 durch an der Lagerachse 4 auftretende hohe Kräfte werden vermieden. Durch diese Wirkung ist die erfindungsgemäße Lösung besonders für Gestaltungen des Zylinderkopfes 1 oder der Lagerbrücke 2 aus Leichtmetall günstig.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.
Eine unmittelbar neben und oberhalb der Nockenwellenlager 3 liegende Hilfsspannfläche 20 an der Lagerbrücke 2 erstreckt sich um die Spannschraubenachse SA. Sie liegt vorzugsweise in der Spannebene Sp von weiteren Schrauben 21 und 23 zum Befestigen der Lagerbrücke 2 am Zylinderkopf 1.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.
Im Zylinderkopf 1 ist ein mit Drucköl beaufschlagter Ölkanal 24 vorhanden. Von ihm verläuft ein Ölzuführungskanal 25 zum Nockenwellenlager 3, der auch in einer Einsenkung 11 im Durchgangsbereich der Spannschraube 5 mündet. Drucköl gelangt von dort zur Lagerachse 4, die eine zentrale Verteilungsbohrung - nicht dargestellt - zur Versorgung der Schmierstellen an den Kipphebeln aufweist.In 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.
Lagerbrücken 2 können intergraler Bestandteil eines am Zylinderkopf 1 befestigten Lagerrahmens sein, der die gesamte Kontur des Zylinderkopfes 1 umfaßt.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.
Erfindungsgemäß wird zur Herstellung der Nockenwellenlager 3 und der Aufnahme 31 für die Lagerachse 4 die Lagerbrücke 2 am Zylinderkopf 1 mittels der BefestigungsschraubenAccording to the invention for the production of the camshaft bearings 3 and the receptacle 31 for the bearing axis 4, the bearing bracket 2 on the cylinder head 1 by means of the fastening screws
23 und Montageschrauben 30 verbunden. Die Montageschrauben 30 wirken gegen die Hilfsspannflächen 20 an der Lagerbrücke 2 und sind im unterhalb der Spannflächen 13 angeordneten Innengewinde 16 im Zylinderkopf 1 verschraubt.23 and mounting screws 30 connected. 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.
Mit dieser Art der Vormontage von Zylinderkopf 1 und Lagerbrücke 2 wird eine funktionsgerechte Verspannung gewährleistet, so daß eine paßgerechte Herstellung der Nockenwellenlagerungen 3 und Aufnahmen 31 für die Lagerachse 4 der Kipphebel erfolgen kann. With this type of preassembly of cylinder head 1 and bearing bracket 2, a functionally correct bracing is ensured, so that a fit production of the camshaft bearings 3 and receptacles 31 for the bearing axis 4 of the rocker arms can take place.

Claims

PATE N TA N S P RÜ C H E PATE N TA NSP RÜ CHE
1. Zylinderkopf für Verbrennungsmotoren mit einer oder mehreren Lagergassen für Nockenwellen und Lagerachsen für Kipphebel, die vorzugsweise auch eine Pumpe- Düse-Einheit betätigen, der folgenden Aufbau aufweist:1. Cylinder head for internal combustion engines with one or more bearing aisles for camshafts and bearing axles for rocker arms, which preferably also operate a pump-nozzle unit, which has the following structure:
- mindestens eine Nockenwelle ist im Zylinderkopf in geteilten Lagern mit aufgeschraubten Lagerbrücken gelagert,- at least one camshaft is supported in the cylinder head in split bearings with screwed-on bearing bridges,
- neben und oberhalb der Lager der Nockenwelle sind an den Lagerbrücken Aufnahmen für die Lagerachsen der Kipphebel angeordnet,- In addition to and above the bearings of the camshaft, receptacles for the bearing axles of the rocker arms are arranged on the bearing bridges,
- die Lagerachsen sind mittels sie durchragender Schrauben gegen die Lagerbrük- ke verspannt gehalten, gekennzeichnet durch folgende Merkmale,- The bearing axles are held against the bearing bridge by means of screws that protrude through them, characterized by the following features,
- neben dem Nockenwellenlager (3) ist eine sich am Zylinderkopf (1 ) abstützende und zum Motorblock durchragende und dort eingereifende Spannschraube (5) mit einem längeren zylindrischen Kopf (6) angeordnet,- In addition to the camshaft bearing (3), a clamping screw (5) with a longer cylindrical head (6), which is supported on the cylinder head (1) and projects through to the engine block and engages there, is arranged,
- der längere zylindrische Kopf (6) weist ein Innenprofil (7) und dahinterliegend ein dem Kernquerschnitt des Innenprofils (7) angepaßtes Innengewinde (8) auf,- The longer cylindrical head (6) has an inner profile (7) and behind it an internal thread (8) adapted to the core cross section of the inner profile (7),
- die die Lagerachsen (4) durchragenden Schrauben (9) sind im Innengewinde (8) des Kopfes (6) der Spannschrauben (5) eingeschraubt.- The screws (9) projecting through the bearing axles (4) are screwed into the internal thread (8) of the head (6) of the clamping screws (5).
2. Zylinderkopf nach Anspruch 1 , dadurch gekennzeichnet, daß im Zylinderkopf (1 ) unterhalb einer Deckfläche (ZK) neben dem Nockenwellenlager (3) eine Spannfläche (13) angeordnet ist, die einen größeren Außendurchmesser als der Kopf (6) der Spannschraube (5) aufweist, wobei die Spannschraube (5) über einen, dem größeren Außendurchmesser der Spannfläche (13) angepaßten Druckring (14) gegen den Zylinderkopf (1) verspannt ist.2. Cylinder head according to claim 1, characterized in that a clamping surface (13) is arranged in the cylinder head (1) below a cover surface (ZK) next to the camshaft bearing (3), which has a larger outer diameter than the head (6) of the clamping screw (5 ), the tensioning screw (5) being braced against the cylinder head (1) via a pressure ring (14) adapted to the larger outside diameter of the tensioning surface (13).
3. Zylinderkopf nach Anspruch 2, dadurch gekennzeichnet, daß im Zylinderkopf (1 ) unterhalb der Spannfläche (13) ein Innengewinde (16) angeordnet ist, dessen Innendurchmesser größer als der Außendurchmesser des Außengewindes (17) oder des Schaftes der Spannschraube (5) ist. 3. Cylinder head according to claim 2, characterized in that an internal thread (16) is arranged in the cylinder head (1) below the clamping surface (13), the internal diameter of which is larger than the external diameter of the external thread (17) or the shaft of the clamping screw (5) .
4. Zylinderkopf nach Anspruch 1 , dadurch gekennzeichnet, daß sich um die Spannschraubenachse (SA) neben den Nockenwellenlagern (3) eine Hilfsspannfläche (20) in der Lagerbrücke (2) erstreckt, die vorzugsweise in der Spannebene (Sp) weiterer Befestigungsschrauben (21 ) liegt.4. Cylinder head according to claim 1, characterized in that an auxiliary clamping surface (20) in the bearing bridge (2) extends around the clamping screw axis (SA) in addition to the camshaft bearings (3), preferably in the clamping plane (Sp) of further fastening screws (21). lies.
5. Zyiinderkopf nach Anspruch 2, dadurch gekennzeichnet, daß ein Ölzuführungskanal (25) für Nockenwellenlager (3) im Zylinderkopf (1 ) in einem Spannschraubendurchgang (11 ) oberhalb der inneren Spannfläche (13) mündet und die Lagerachsen (4) für Kipphebel eine zentrale Verteilungsbohrung aufweisen.5. Cylinder head according to claim 2, characterized in that an oil supply channel (25) for camshaft bearings (3) in the cylinder head (1) in a clamping screw passage (11) opens above the inner clamping surface (13) and the bearing axes (4) for rocker arms a central Have distribution hole.
6. Zylinderkopf nach Anspruch 1 , dadurch gekennzeichnet, daß die Lagerbrücken (2) intergrater Bestandteil eines am Zyiinderkopf (1 ) befestigten Lagerrahmens sind.6. Cylinder head according to claim 1, characterized in that the bearing bridges (2) are integral part of a cylinder frame attached to the cylinder head (1).
7. Verfahren zum Herstellen von Zylinderköpfen nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, daß zur Herstellung der Lager (3) für Nockenwellen und der Aufnahmen (31 ) von Lagerachsen (4) die Lagerbrücke (2) am Zylinderkopf (1 ) mittels Befestigungsschrauben (23) und Montageschrauben (30) verspannt ist, wobei ausgehend von im Zyiinderkopf (1 ) unterhalb einer Deckfläche (ZK) angeordneten Innengewinden (16) diese Montageschrauben (30) gegen eine Hilfsspannflächen (20) der Lagerbrücke (1 ) verspannt sind. 7. A method for producing cylinder heads according to one or more of the preceding claims, characterized in that for the production of the bearing (3) for camshafts and the receptacles (31) of bearing axles (4), the bearing bracket (2) on the cylinder head (1) by means Fastening screws (23) and mounting screws (30) are clamped, starting from internal threads (16) arranged in the cylinder head (1) below a cover surface (ZK), these mounting screws (30) are clamped against an auxiliary clamping surface (20) of the bearing bracket (1).
PCT/EP1999/002576 1998-06-12 1999-04-16 Cylinder head for internal combustion engines and method for producing same WO1999066176A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59900479T DE59900479D1 (en) 1998-06-12 1999-04-16 CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINES AND METHOD FOR THE PRODUCTION THEREOF
JP2000554967A JP2002518623A (en) 1998-06-12 1999-04-16 Cylinder head for internal combustion engine and method of manufacturing the same
EP99919247A EP1086300B1 (en) 1998-06-12 1999-04-16 Cylinder head for internal combustion engines and method for producing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19826286.8 1998-06-12
DE19826286A DE19826286A1 (en) 1998-06-12 1998-06-12 Cylinder head for internal combustion engines and process for its manufacture

Publications (1)

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

Family

ID=7870734

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/002576 WO1999066176A1 (en) 1998-06-12 1999-04-16 Cylinder head for internal combustion engines and method for producing same

Country Status (5)

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

Cited By (1)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19752381A1 (en) * 1997-11-26 1999-05-27 Volkswagen Ag Motor cylinder head
DE102005020588A1 (en) * 2005-05-03 2006-11-09 Bayerische Motoren Werke Ag System for mounting cylinder heads on crankcases in IC engines comprises rods passing through crankcase with internally threaded upper ends, shorter, externally threaded rods passing through cylinder head and being screwed into these
JP4365373B2 (en) * 2006-01-19 2009-11-18 トヨタ自動車株式会社 Camshaft support structure for internal combustion engine
DE102008007091B4 (en) * 2008-01-31 2010-06-24 Polytec Automotive Gmbh & Co. Kg camshafts module
WO2011076959A1 (en) * 2009-12-23 2011-06-30 Amadeo Marti Carbonell, S.A. Device for assembling the cylinder head of an engine
CN103352766B (en) * 2013-08-06 2015-09-30 中国嘉陵工业股份有限公司（集团） Motorcycle engine cylinder fastening structure

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 (en) * 1985-11-26 1987-07-15 Audi Ag Internal-combustion engine with at least one overhead camshaft
EP0255707A2 (en) * 1986-08-05 1988-02-10 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Arrangement of an auxiliary apparatus by means of a bolt joint of a highly loaded machine part, especially at an internal-combustion engine
DE4232783A1 (en) 1992-07-10 1994-01-13 Volkswagen Ag Cylinder head for an internal combustion engine with a pump nozzle unit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3641129C1 (en) * 1986-12-02 1987-07-30 Daimler Benz Ag Device for mounting two camshafts in the cylinder head of a multi-cylinder in-line internal combustion engine
DE4215051C2 (en) * 1992-05-07 1997-05-28 Audi Ag Bearing arrangement
DE19634541A1 (en) * 1995-09-09 1997-03-13 Volkswagen Ag Bearing fitting process for cylinder head of IC engine

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 (en) * 1985-11-26 1987-07-15 Audi Ag Internal-combustion engine with at least one overhead camshaft
EP0255707A2 (en) * 1986-08-05 1988-02-10 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Arrangement of an auxiliary apparatus by means of a bolt joint of a highly loaded machine part, especially at an internal-combustion engine
DE4232783A1 (en) 1992-07-10 1994-01-13 Volkswagen Ag Cylinder head for an internal combustion engine with a pump nozzle unit

Cited By (1)

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

Also Published As

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

Similar Documents

Publication Publication Date Title
DE3943727C2 (en) Cylinder head of an internal combustion engine
EP1086300B1 (en) Cylinder head for internal combustion engines and method for producing same
DE4227566A1 (en) Camshaft bearing on the cylinder head for a multi-cylinder internal combustion engine
AT393297B (en) CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINES
EP1676989B1 (en) Internal combustion engine with a piston cooling device
EP1034358B1 (en) Cylinder head for an internal combustion engine with a pump-jet unit
DE102007037461A1 (en) Internal combustion engine e.g. skirt engine, has cylinder housing lower part comprising separate bearing cap of crankshaft bearing, which is connected with cylinder crankcase by angular screw connection
EP3842622B1 (en) Device for rotatably supporting a camshaft
EP0974000A1 (en) Multicylinder internal combustion engine with two inlet valves and two outlet valves
EP0499601B1 (en) Cylinder head for an internal combustion engine
EP0845582B1 (en) Valve control for an internal combustion engine provided with lift valves for the gas exchange
EP1108859B1 (en) Bearing arrangement for a cam shaft
DE60300535T2 (en) Internal combustion engine with a pump and method for replacing the pump
DE3933103A1 (en) Connecting rod especially made of lightweight metal - has a detachable bearing cover on the outside of which is an equalising mass
EP0568527A1 (en) Camshaft drive unit for a v-type internal-combustion engine.
EP0109596B1 (en) Reciprocating pistons internal combustion engine
EP1584810B1 (en) Crankcase for combustion engine
EP1085173A2 (en) Valve drive for an internal combustion engine
DE3643438C1 (en) Internal combustion engine with an auxiliary device driven by way of the camshaft and an additional camshaft bearing
DE19619775A1 (en) Cylinder head for multicylinder internal combustion engine
DE3404866C1 (en) Cast cylinder block for a reciprocating-piston engine and device for the casting of such a cylinder block
DE2025305A1 (en) Valve control
DE102017011484A1 (en) Cylinder head device for an internal combustion engine
DE102004044780A1 (en) Internal combustion engine for operating a V-shaped cylinder engine has a crankcase with V-shaped cylinder cases, cylinder heads and main bearings with bearing cap pieces
DE1148413B (en) Screw connection

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 99807032.7

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): CN JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1999919247

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1999919247

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1999919247

Country of ref document: EP