EP0744531B1 - Cylinder head for an internal combustion engine - Google Patents

Cylinder head for an internal combustion engine Download PDF

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Publication number
EP0744531B1
EP0744531B1 EP95107784A EP95107784A EP0744531B1 EP 0744531 B1 EP0744531 B1 EP 0744531B1 EP 95107784 A EP95107784 A EP 95107784A EP 95107784 A EP95107784 A EP 95107784A EP 0744531 B1 EP0744531 B1 EP 0744531B1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
cylinder
main oil
oil ducts
bores
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 - Lifetime
Application number
EP95107784A
Other languages
German (de)
French (fr)
Other versions
EP0744531A1 (en
Inventor
Winfried Krebs
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.)
Dr Ing HCF Porsche AG
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Dr Ing HCF Porsche AG
Renault SAS
Regie Nationale des Usines Renault
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 Dr Ing HCF Porsche AG, Renault SAS, Regie Nationale des Usines Renault filed Critical Dr Ing HCF Porsche AG
Priority to DE59504986T priority Critical patent/DE59504986D1/en
Priority to EP95107784A priority patent/EP0744531B1/en
Priority to JP11935296A priority patent/JP3889830B2/en
Priority to KR1019960017145A priority patent/KR100405587B1/en
Publication of EP0744531A1 publication Critical patent/EP0744531A1/en
Application granted granted Critical
Publication of EP0744531B1 publication Critical patent/EP0744531B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/107—Lubrication of valve gear or auxiliaries of rocker shaft bearings
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/102—Lubrication of valve gear or auxiliaries of camshaft bearings
    • 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
    • F01L2001/0476—Camshaft bearings
    • 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
    • F01L2001/0537—Double overhead camshafts [DOHC]
    • 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]

Definitions

  • the invention relates to a cylinder head for an internal combustion engine the genus of the main claim.
  • Such a cylinder head is known for example from DE 34 36 426 C2.
  • the supply of the bearings of the camshaft and the storage of the Rocker arm is via main oil passages that are parallel to the camshafts run.
  • Each of the two camshafts and the associated rocker arms are supplied by a main oil channel.
  • the two main oil channels run in the middle area of the cylinder head.
  • This cylinder head has a middle one cast block, which among other things receiving openings for the spark plugs having.
  • the main oil channels are in this longitudinal block through holes.
  • the oil flow in such a middle block of the cylinder head leads to very cramped installation conditions, which includes a shift in the cylinder head screw connection require outside, so that the cylinder head screw connection is easily accessible due to the camshaft overlap.
  • such a cylinder head is due to the complex design of the middle block relatively difficult.
  • the training leads one middle block to be subsequently drilled due to the need to be observed Minimum wall thicknesses may cause problems when molding the Blank
  • the inner area of the cylinder head should be largely free of Be internals.
  • the cylinder head be lighter again because of the relatively low Wall thicknesses compared to training as a drilled casting Mass can be saved.
  • the pipelines are guided in crossbars that are connected to one of the outer walls are connected, only the crossbars themselves in the longitudinal direction of the Cylinder head are pierced.
  • the length of the borehole to be drilled is reduced to a minimum.
  • the pipes By routing the pipes in crossbars, the pipes can with a small distance to the outer walls and at the same time as Serve storage for the lever elements of the valve actuation.
  • the bearings the lever elements (rocker arms) are through holes in the Pipeline supplied directly.
  • the cylinder head housing 1 is over two rows of Cylinder head screw connections 2 with a cylinder crankcase 3 in Open-deck construction and is connected by a cover 4 to it Top closed.
  • cylinder head housing 1 there are two parallel ones Camshafts mounted, an intake camshaft 5 and an exhaust camshaft 6.
  • Each of the two camshafts 5, 6 actuates eight via rocker arms 7 Inlet valves 8 and eight exhaust valves 9.
  • Each cylinder is the Internal combustion engine assigned two intake valves and two exhaust valves, which in Valve guides 10 and 11 are guided.
  • the two camshafts 5, 6 are on the one hand, in bearings 12 in the area of the left end wall 13.
  • Two further bearings 14 and 15 are formed in crosspieces 16, 17 which in Area of the second and fourth cylinders arranged and with the outer wall 18th or 19 are connected.
  • the crossbars 16 and 17 are the lower Halves of the bearing bores 20 are formed.
  • the upper part of the bearing bore is formed in bearing caps 21, which are screwed onto the crossbars 16 and 17 are.
  • the rocker arms are in this embodiment as Roller rocker arm formed and mounted on an axis 22 which is parallel to each camshaft 5 or 6 runs and is designed as a tube.
  • This Tube 22 extends over the entire inner length of the cylinder head housing 1 and is guided in bores 23 of the transverse webs 14 and 15.
  • the tube 22 continues to be guided in bores 24, which are introduced into crosspieces 25 are arranged in the area of cylinders 1 and 3 and also with the respective outer wall 18 and 19 are connected.
  • the axes or tubes 22 are guided in blind bores 26 and 27 and sealed.
  • the bores 23, 24, 26 and 27 are from the right end wall 28 brought in.
  • Corresponding bores 29 are in the right end wall 28, 30 formed, which in the region of its outward opening Threads 31, 32 are provided.
  • the axes or tubes 22 are secured and closed.
  • the tubes 22 are used to supply the oil to the engine during operation Bearings 12, 14 and 15 of the camshafts 5 and 6.
  • the tubes 22 in the Area of the transverse webs 16 and 17 and in the area of the bearing points 12 with radial Provide openings 33, from which channels 34 to the bearings 12, 14 and 15th going out.
  • the two annular spaces 36 and 37 are connected to one another via this transverse bore 39 connected.
  • the annular spaces 36 and 37 open oblique bores 41, 42, the each run in the crosspiece 35. These are from the top of the Cylinder head housing 1 introduced and cut the holes 43 to Guide of the tubes 22.
  • the tubes 22 are on their lower side with radial Provide openings 44 which are connected to the oblique bores 41 and 42, respectively stand.
  • the inner space 45 of the tubes is provided via these radial openings 44 the lower part of the oblique holes and thus the oil supply in Connection.
  • the upper part of the oblique bores 41, 42 is through the tube 22 sealed so that no lubricant can leak.
  • roller rocker arm 7 In the area of the roller rocker arm 7 is on the axis 22 (tube) these are provided with further radial openings, not shown, via which the Storage of the roller rocker arm 7 on the axis 22 supplied with lubricant becomes.

Description

Die Erfindung geht aus von einem Zylinderkopf für eine Brennkraftmaschine nach der Gattung des Hauptanspruches.The invention relates to a cylinder head for an internal combustion engine the genus of the main claim.

Ein derartiger Zylinderkopf ist beispielsweise aus der DE 34 36 426 C2 bekannt. Die Versorgung der Lagerstellen der Nockenwelle und der Lagerung der Schlepphebel erfolgt über Hauptölkanäle, die parallel zu den Nockenwellen verlaufen. Jede der beiden Nockenwellen sowie die zugeordneten Schlepphebel werden von einem Hauptölkanal versorgt. Die beiden Hauptölkanäle verlaufen im mittleren Bereich des Zylinderkopfes. Dieser Zylinderkopf hat einen mittleren, gegossenen Block, der unter anderem Aufnahmeöffnungen für die Zündkerzen aufweist. In diesem längsverlaufenden Block sind die Hauptölkanäle als durchgehende Bohrungen ausgeführt. Die Ölführung in einem derartigen mittleren Block des Zylinderkopfes führt zu sehr beengten Einbauverhältnissen, die unter anderem eine Verschiebung der Zylinderkopfverschraubung nach außen erfordern, so daß eine gute Zugänglichkeit der Zylinderkopfverschraubung aufgrund der Überdeckung durch die Nockenwellen nicht gegeben ist. Darüber hinaus ist ein derartiger Zylinderkopf aufgrund der aufwendigen Ausbildung des mittleren Blockes relativ schwer. Weiterhin führt die Ausbildung eines nachträglich zu durchbohrenden mittleren Blockes aufgrund der einzuhaltenden Mindestwandstärken unter Umständen zu Problemen beim Ausformen des Rohlings.Such a cylinder head is known for example from DE 34 36 426 C2. The supply of the bearings of the camshaft and the storage of the Rocker arm is via main oil passages that are parallel to the camshafts run. Each of the two camshafts and the associated rocker arms are supplied by a main oil channel. The two main oil channels run in the middle area of the cylinder head. This cylinder head has a middle one cast block, which among other things receiving openings for the spark plugs having. The main oil channels are in this longitudinal block through holes. The oil flow in such a middle block of the cylinder head leads to very cramped installation conditions, which includes a shift in the cylinder head screw connection require outside, so that the cylinder head screw connection is easily accessible due to the camshaft overlap. About that Furthermore, such a cylinder head is due to the complex design of the middle block relatively difficult. Furthermore, the training leads one middle block to be subsequently drilled due to the need to be observed Minimum wall thicknesses may cause problems when molding the Blanks.

Demgegenüber ist es Aufgabe der Erfindung, einen Zylinderkopf für eine Brennkraftmaschine nach der Gattung des Hauptanspruches so weiterzubilden, daß dieser einfach aufgebaut, einfach zu fertigen und einfach zu bearbeiten ist. Darüber hinaus soll der innere Bereich des Zylinderkopfes weitgehend frei von Einbauten sein. In contrast, it is an object of the invention to provide a cylinder head for a To further develop an internal combustion engine according to the type of the main claim, that it is simple, easy to manufacture and easy to edit. In addition, the inner area of the cylinder head should be largely free of Be internals.

Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Hauptanspruches gelöst. Die Verlegung der Hauptölkanäle zur Versorgung der Lagerstellen der Nockenwelle und der Hebelelemente nach außen in den Bereich der Außenwände macht den Innenraum des Zylinderkopfes zumindest frei von Einbauten für die Ölführung. Dadurch wird der Zylinderkopf insgesamt leichter und gußtechnisch einfacher zu beherrschen. Dadurch, daß die Verbindung der Hauptölkanäle zu den Ringkanälen der Zylinderkopfverschraubung durch schräg verlaufende Bohrungen erfolgt, die von oben zugänglich bzw. eingebracht sind, ergibt sich ein einfach zu handhabender Fertigungsschritt, bei dem darüber hinaus die Bohrungslänge relativ kurz gehalten wird.This object is achieved with the characterizing features of Main claim solved. The laying of the main oil channels to supply the Bearing points of the camshaft and the lever elements to the outside in the area The outer walls at least clear the interior of the cylinder head Internals for the oil flow. This makes the cylinder head lighter overall and easier to master in terms of casting technology. By connecting the Main oil channels to the ring channels of the cylinder head screw connection through obliquely running holes that are accessible or introduced from above, the result is an easy-to-use manufacturing step in which furthermore, the bore length is kept relatively short.

Durch Nutzung von Rohrleitungen für die Hauptölkanäle kann der Zylinderkopf noch einmal leichter ausgebildet werden, da durch die relativ geringen Wandstärken gegenüber einer Ausbildung als aufgebohrtes Gußteil erheblich Masse eingespart werden kann. Darüber hinaus kann auf das aufwendige Bohren über die gesamte Längserstreckung des Zylinderkopfes (Bohrloch länge) mit den damit verbundenen Schwierigkeiten verzichtet werden.By using pipes for the main oil passages, the cylinder head be lighter again because of the relatively low Wall thicknesses compared to training as a drilled casting Mass can be saved. In addition, the elaborate Drilling over the entire length of the cylinder head (drill hole length) with the difficulties involved.

Werden die Rohrleitungen in Querstegen geführt, die mit einer der Außenwände verbunden sind, brauchen nur die Querstege selbst in Längsrichtung des Zylinderkopfes durchbohrt werden. Die einzubringende Bohrloch länge reduziert sich damit auf ein Minimum.The pipelines are guided in crossbars that are connected to one of the outer walls are connected, only the crossbars themselves in the longitudinal direction of the Cylinder head are pierced. The length of the borehole to be drilled is reduced to a minimum.

Besonders vorteilhaft ist es, wenn die Querstege zur Aufnahme der Rohrleitungen der Hauptölkanäle gleichzeitig den unteren Lagerbereich der Nockenwellenlagerung aufnehmen.It when the crosspieces for receiving the Pipelines of the main oil channels simultaneously the lower storage area of the Take up camshaft bearings.

Durch die Führung der Rohrleitungen in Querstegen können die Rohrleitungen mit geringem Abstand zu den Außenwänden geführt werden und gleichzeitig als Lagerung für die Hebelelemente der Ventilbetätigung dienen. Die Lagerstellen der Hebelelemente (Schlepphebel) werden dabei durch Bohrungen der Rohrleitung direkt versorgt. By routing the pipes in crossbars, the pipes can with a small distance to the outer walls and at the same time as Serve storage for the lever elements of the valve actuation. The bearings the lever elements (rocker arms) are through holes in the Pipeline supplied directly.

Weitere Vorteile und vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung.Further advantages and advantageous developments of the invention result from the dependent claims and the description.

Ein Ausführungsbeispiel der Erfindung ist in der nachfolgenden Beschreibung und Zeichnung näher erläutert. Letztere zeigt in

Fig. 1
eine vereinfachte Draufsicht auf ein geöffnetes Zylinderkopfgehäuse,
Fig. 2
einen Querschnitt durch den Zylinderkopf entlang der Linie II-II nach Fig. 1,
Fig. 3
einen Querschnitt durch den Zylinderkopf längs der Linie III-III nach Fig. 1,
Fig. 4
einen Schnitt in der Ebene E gemäß Fig. 2 parallel zur Flanschfläche des Zylinderkopfgehäuses durch eine der Stirnseiten,
Fig. 5
einen Schnitt in der Ebene E gemäß Fig. 2 parallel zur Flanschfläche des Zylinderkopfgehäuses durch die andere Stirnseite,
Fig. 6
eine Detailansicht des geöffneten Zylinderkopfes.
An embodiment of the invention is explained in more detail in the following description and drawing. The latter shows in
Fig. 1
a simplified plan view of an open cylinder head housing,
Fig. 2
2 shows a cross section through the cylinder head along the line II-II according to FIG. 1,
Fig. 3
2 shows a cross section through the cylinder head along the line III-III according to FIG. 1,
Fig. 4
2 shows a section in the plane E according to FIG. 2 parallel to the flange surface of the cylinder head housing through one of the end faces,
Fig. 5
2 shows a section in plane E according to FIG. 2 parallel to the flange surface of the cylinder head housing through the other end face,
Fig. 6
a detailed view of the open cylinder head.

Das Zylinderkopfgehäuse 1 ist über zwei Reihen von Zylinderkopfverschraubungen 2 mit einem Zylinderkurbelgehäuse 3 in Open-Deck-Bauweise verbunden und wird durch einen Deckel 4 an seiner Oberseite verschlossen. Im Zylinderkopfgehäuse 1 sind zwei parallele Nockenwellen gelagert, eine Einlaßnockenwelle 5 und eine Auslaßnockenwelle 6. Jede der beiden Nockenwellen 5, 6 betätigt über Schlepphebel 7 acht Einlaßventile 8 bzw. acht Auslaßventile 9. Dabei sind jedem Zylinder der Brennkraftmaschine zwei Einlaßventile und zwei Auslaßventile zugeordnet, die in Ventilführungen 10 bzw. 11 geführt sind. Die beiden Nockenwellen 5, 6 sind einerseits in Lagerstellen 12 im Bereich der linken Stirnwand 13 gelagert. Zwei weitere Lagerstellen 14 und 15 sind in Querstegen 16, 17 ausgebildet, die im Bereich des zweiten und vierten Zylinders angeordnet und mit der Außenwand 18 bzw. 19 verbunden sind. In den Querstegen 16 und 17 sind dazu die unteren Hälften der Lagerbohrungen 20 ausgebildet. Der obere Teil der Lagerbohrung ist in Lagerdeckeln 21 ausgebildet, die auf die Querstege 16 bzw. 17 aufgeschraubt sind. Die Schlepphebel sind in diesem Ausführungsbeispiel als Rollenschlepphebel ausgebildet und auf einer Achse 22 gelagert, die parallel zur jeweiligen Nockenwelle 5 bzw. 6 verläuft und als Rohr ausgebildet ist. Dieses Rohr 22 erstreckt sind über die gesamte innere Länge des Zylinderkopfgehäuses 1 und ist in Bohrungen 23 der Querstege 14 bzw. 15 geführt. Darüber hinaus ist das Rohr 22 weiterhin in Bohrungen 24 geführt, die in Querstege 25 eingebracht sind, die im Bereich der Zylinder 1 und 3 angeordnet und ebenfalls mit der jeweiligen Außenwand 18 bzw. 19 verbunden sind. Im Bereich der Stirnwand 13 sind die Achsen bzw. Rohre 22 in Sackbohrungen 26 bzw. 27 geführt und abgedichtet. Die Bohrungen 23, 24, 26 und 27 sind von der rechten Stirnwand 28 aus eingebracht. In der rechten Stirnwand 28 sind entsprechende Bohrungen 29, 30 ausgebildet, die im Bereich ihrer nach außen weisenden Öffnung mit Gewinden 31, 32 versehen sind. Durch die Bohrungen 29 bzw. 30 werden die Achsen bzw. Rohre 22 in das Zylinderkopfgehäuse 1 eingeschoben. Anschließend werden die Rollenschlepphebel 7 aufgesetzt und die Achsen durch die Bohrungen 23 bzw. 24 geschoben, bis sie in die Sackbohrungen 26 bzw. 27 eingeschoben sind. Durch Einschrauben von nicht dargestellten Verschlußstopfen in die Gewinde 31 bzw. 32 der Bohrungen 29, 30 im Bereich der Stirnwand 38 werden die Achsen bzw. Rohre 22 gesichert und verschlossen. Die Rohre 22 dienen im Betrieb der Brennkraftmaschine zur Ölversorgung der Lagerstellen 12, 14 und 15 der Nockenwellen 5 und 6. Dazu sind die Rohre 22 im Bereich der Querstege 16 und 17 und im Bereich der Lagerstellen 12 mit radialen Öffnungen 33 versehen, von denen Kanäle 34 zu den Lagerstellen 12, 14 und 15 ausgehen.The cylinder head housing 1 is over two rows of Cylinder head screw connections 2 with a cylinder crankcase 3 in Open-deck construction and is connected by a cover 4 to it Top closed. In cylinder head housing 1 there are two parallel ones Camshafts mounted, an intake camshaft 5 and an exhaust camshaft 6. Each of the two camshafts 5, 6 actuates eight via rocker arms 7 Inlet valves 8 and eight exhaust valves 9. Each cylinder is the Internal combustion engine assigned two intake valves and two exhaust valves, which in Valve guides 10 and 11 are guided. The two camshafts 5, 6 are on the one hand, in bearings 12 in the area of the left end wall 13. Two further bearings 14 and 15 are formed in crosspieces 16, 17 which in Area of the second and fourth cylinders arranged and with the outer wall 18th or 19 are connected. In the crossbars 16 and 17 are the lower Halves of the bearing bores 20 are formed. The upper part of the bearing bore is formed in bearing caps 21, which are screwed onto the crossbars 16 and 17 are. The rocker arms are in this embodiment as Roller rocker arm formed and mounted on an axis 22 which is parallel to each camshaft 5 or 6 runs and is designed as a tube. This Tube 22 extends over the entire inner length of the cylinder head housing 1 and is guided in bores 23 of the transverse webs 14 and 15. Beyond that the tube 22 continues to be guided in bores 24, which are introduced into crosspieces 25 are arranged in the area of cylinders 1 and 3 and also with the respective outer wall 18 and 19 are connected. In the area of the end wall 13 the axes or tubes 22 are guided in blind bores 26 and 27 and sealed. The bores 23, 24, 26 and 27 are from the right end wall 28 brought in. Corresponding bores 29 are in the right end wall 28, 30 formed, which in the region of its outward opening Threads 31, 32 are provided. Through the holes 29 and 30, respectively Axes or tubes 22 inserted into the cylinder head housing 1. Then the roller rocker arms 7 are put on and the axes through the holes 23 and 24 pushed until they into the blind holes 26 and 27th are inserted. By screwing in not shown Sealing plugs in the threads 31 and 32 of the bores 29, 30 in the area the end wall 38, the axes or tubes 22 are secured and closed. The tubes 22 are used to supply the oil to the engine during operation Bearings 12, 14 and 15 of the camshafts 5 and 6. For this purpose, the tubes 22 in the Area of the transverse webs 16 and 17 and in the area of the bearing points 12 with radial Provide openings 33, from which channels 34 to the bearings 12, 14 and 15th going out.

Zwischen den Zylindern 2 und 3 sind weitere Querstege 35 ausgebildet, die ebenfalls von den Rohren 22 durchdrungen werden und die ebenfalls mit den Außenwänden 18 bzw. 19 verbunden sind. Durch diese Querstege 35 verlaufen endseitig Zylinderkopfverschraubungen 2, die in ihrem unteren Bereich einen Ringraum 36 bzw. 37 ausbilden. Der Ringraum 37 ist über einen im Kurbelzylindergehäuse 3 ausgebildeten Ringraum 38 auf an sich bekannte Weise mit der Schmiermittelversorgung der Brennkraftmaschine verbunden. Zwischen den beiden Ringräumen 36 und 37 verläuft im Zylinderkopfgehäuse 1 eine von außen eingebrachte Bohrung 39, die durch einen Stopfen 40 verschlossen ist. Between the cylinders 2 and 3, further crosspieces 35 are formed are also penetrated by the tubes 22 and also with the Outer walls 18 and 19 are connected. Run through these crossbars 35 at the end cylinder head screw connections 2, one in its lower area Form annular space 36 or 37. The annular space 37 is in the Crank cylinder housing 3 formed annular space 38 in a manner known per se connected to the lubricant supply to the internal combustion engine. Between one of the two annular spaces 36 and 37 runs in the cylinder head housing 1 externally introduced bore 39, which is closed by a plug 40.

Über diese Querbohrung 39 sind die beiden Ringräume 36 und 37 miteinander verbunden. In die Ringräume 36 bzw. 37 münden Schrägbohrungen 41, 42, die jeweils im Quersteg 35 verlaufen. Diese sind von der Oberseite des Zylinderkopfgehäuses 1 aus eingebracht und schneiden die Bohrungen 43 zur Führung der Rohre 22. Die Rohre 22 sind auf ihrer unteren Seite mit radialen Öffnungen 44 versehen, die mit den Schrägbohrungen 41 bzw. 42 in Verbindung stehen. Über diese radialen Öffnungen 44 steht der Innenraum 45 der Rohre mit dem unteren Teil der Schrägbohrungen und damit der Ölversorgung in Verbindung. Gleichzeitig wird der obere Teil der Schrägbohrungen 41, 42 durch das Rohr 22 abgedichtet, so daß kein Schmiermittel austreten kann. Es ist jedoch auch möglich, die Abdichtung der Schrägbohrungen 41, 42 durch Stopfen vorzunehmen, die oberhalb der Rohre 22 eingesetzt werden.The two annular spaces 36 and 37 are connected to one another via this transverse bore 39 connected. In the annular spaces 36 and 37 open oblique bores 41, 42, the each run in the crosspiece 35. These are from the top of the Cylinder head housing 1 introduced and cut the holes 43 to Guide of the tubes 22. The tubes 22 are on their lower side with radial Provide openings 44 which are connected to the oblique bores 41 and 42, respectively stand. The inner space 45 of the tubes is provided via these radial openings 44 the lower part of the oblique holes and thus the oil supply in Connection. At the same time, the upper part of the oblique bores 41, 42 is through the tube 22 sealed so that no lubricant can leak. However, it is also possible to seal the oblique bores 41, 42 by plugging make that are used above the tubes 22.

Im Bereich der Lagerung der Rollenschlepphebel 7 auf der Achse 22 (Rohr) ist diese mit weiteren, nicht dargestellten radialen Öffnungen versehen, über die die Lagerung der Rollenschlepphebel 7 auf der Achse 22 mit Schmiermittel versorgt wird.In the area of the roller rocker arm 7 is on the axis 22 (tube) these are provided with further radial openings, not shown, via which the Storage of the roller rocker arm 7 on the axis 22 supplied with lubricant becomes.

Claims (5)

  1. A cylinder head for an internal-combustion engine with a cylinder-head housing (1), with two overhead camshafts (5, 6) and associated gas-exchange valves (8, 9), with lever members (7) arranged between the cams of the camshaft and the gas-exchange valves and with main oil ducts (22) which extend parallel to the camshafts and from which ducts (34) for supplying the camshaft bearing points and the lever members branch off, wherein the main oil ducts are supplied with lubricant by way of annular chambers (36, 37) of the cylinder-head bolt fastening, characterized in that the main oil ducts extend in the region of the outer walls (18, 19) of the cylinder-head housing, and the said main oil ducts (22) are connected to the annular chambers by way of bores (41) formed from the top of the cylinder-head housing (1).
  2. A cylinder head according to Claim 1, characterized in that the main oil ducts (22) are constructed in the form of pipes, and the said pipes are guided in bores (23, 43) extending parallel to the camshafts (5, 6).
  3. A cylinder head according to Claim 2, characterized in that the bores (23, 43) for guiding the pipes (22) are formed in transverse webs (16, 17, 25, 35) connected to one of the outer walls (18, 19).
  4. A cylinder head according to Claim 3, characterized in that the lower part of a bearing bore (20) for mounting the camshaft is formed in each case in at least part of the transverse webs (16, 17).
  5. A cylinder head according to one of Claims 2 to 4, characterized in that the pipes (22) of the main oil ducts act at the same time as a bearing axle for the lever members (7) for controlling the gas exchange.
EP95107784A 1995-05-22 1995-05-22 Cylinder head for an internal combustion engine Expired - Lifetime EP0744531B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59504986T DE59504986D1 (en) 1995-05-22 1995-05-22 Cylinder head for an internal combustion engine
EP95107784A EP0744531B1 (en) 1995-05-22 1995-05-22 Cylinder head for an internal combustion engine
JP11935296A JP3889830B2 (en) 1995-05-22 1996-05-14 Cylinder head used in an internal combustion engine
KR1019960017145A KR100405587B1 (en) 1995-05-22 1996-05-21 Cylinder Head for Internal Combustion Engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95107784A EP0744531B1 (en) 1995-05-22 1995-05-22 Cylinder head for an internal combustion engine

Publications (2)

Publication Number Publication Date
EP0744531A1 EP0744531A1 (en) 1996-11-27
EP0744531B1 true EP0744531B1 (en) 1999-01-27

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Application Number Title Priority Date Filing Date
EP95107784A Expired - Lifetime EP0744531B1 (en) 1995-05-22 1995-05-22 Cylinder head for an internal combustion engine

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EP (1) EP0744531B1 (en)
JP (1) JP3889830B2 (en)
KR (1) KR100405587B1 (en)
DE (1) DE59504986D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7845316B2 (en) * 2007-07-06 2010-12-07 Brp-Powertrain Gmbh & Co Kg Internal combustion engine cooling system
JP4742129B2 (en) * 2008-10-06 2011-08-10 株式会社オティックス Cam cap and method of manufacturing cam cap
CN103026013B (en) * 2009-12-23 2015-10-07 阿马德奥·马蒂·卡沃内尔股份有限公司 For the device of the lubrication of the camshaft base in internal-combustion engine and pitman arm shaft base
JP5310643B2 (en) * 2010-04-28 2013-10-09 三菱自動車工業株式会社 cylinder head
DE102019000489A1 (en) * 2019-01-23 2020-07-23 Deutz Aktiengesellschaft Oil supply

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163141A (en) * 1981-03-31 1982-10-07 Yamaha Motor Co Ltd Cylinder head clamping structure in internal- combustion engine
JPS5958109A (en) * 1982-09-27 1984-04-03 Honda Motor Co Ltd Cam shaft holder of internal combustion engine
JPS6079141A (en) 1983-10-04 1985-05-04 Honda Motor Co Ltd Cylinder head for dohc 4-cycle internal-combustion engine
CA1330026C (en) * 1987-12-28 1994-06-07 Tomonori Niizato Lubricant supplying system for dohc type multi-cylinder internal combustion engine
JPH088287Y2 (en) * 1988-02-22 1996-03-06 日産自動車株式会社 Cylinder head for DOHC 4-valve internal combustion engine
CA1331547C (en) * 1988-08-01 1994-08-23 Yukihiro Matsumoto Valve operating system for internal combustion engine

Also Published As

Publication number Publication date
DE59504986D1 (en) 1999-03-11
EP0744531A1 (en) 1996-11-27
JP3889830B2 (en) 2007-03-07
KR100405587B1 (en) 2004-04-09
JPH09119343A (en) 1997-05-06
KR960041675A (en) 1996-12-19

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