EP0499601B1 - Cylinder head for an internal combustion engine - Google Patents

Cylinder head for an internal combustion engine Download PDF

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Publication number
EP0499601B1
EP0499601B1 EP19920890033 EP92890033A EP0499601B1 EP 0499601 B1 EP0499601 B1 EP 0499601B1 EP 19920890033 EP19920890033 EP 19920890033 EP 92890033 A EP92890033 A EP 92890033A EP 0499601 B1 EP0499601 B1 EP 0499601B1
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EP
European Patent Office
Prior art keywords
cast
cylinder head
bearings
bearing
camshafts
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
EP19920890033
Other languages
German (de)
French (fr)
Other versions
EP0499601A1 (en
Inventor
Karl Kirchweger
Bertram Obermayer
Wolfgang Kling
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.)
AVL List GmbH
Original Assignee
AVL List GmbH
AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH
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 AVL List GmbH, AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH filed Critical AVL List GmbH
Publication of EP0499601A1 publication Critical patent/EP0499601A1/en
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Publication of EP0499601B1 publication Critical patent/EP0499601B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F01L1/053—Camshafts overhead type
    • F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—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
    • 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
    • F01M9/104—Lubrication of valve gear or auxiliaries of tappets
    • 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 internal combustion engines with hanging valves and bearings for two overhead camshafts which are fastened with bearing brackets and with bracket bolts, two first oil passages running continuously parallel to and below the camshafts being provided for lubricating the camshaft bearings , which are connected to each other by a bore running normal to these, this bore in turn being connected to the oil pump by means of a feed bore running parallel to the bracket bolts.
  • Cylinder heads of this type are described in U.S. Patent 4,621,597.
  • the oil feeds to the camshaft bearings, starting from cast first oil channels, are always drilled, whereby the bores are usually disproportionately long compared to their diameter and are also at an angle to the main machining directions. This makes the production of these holes difficult and extremely complex.
  • the invention has for its object to avoid these disadvantages and in particular to create the shortest possible connection bores lying in the main machining directions. According to the invention, this is done in that cast second oil channels branch off from the cast first oil channels, which lead to the sliding surfaces of the valve lifters, and parallel bores are provided to the bracket bolts, which connect the cast second oil channels with the lubrication grooves of the bearings of the camshafts.
  • the cast second oil channels are designed so that the connection bores parallel to the bearing screws to the lubrication grooves can be made as short as possible.
  • the connecting bore of the two cast oil channels and the feed bore running parallel to the bracket bolts can be arranged at the rear end of the internal combustion engine, which is structurally simple to solve and also enables the necessary closure members for the bores to be attached.
  • grooves can advantageously be provided in the bearing brackets of the camshaft bearings for supplying the lubricating oil to the camshaft bearings from the outlet from the bores running parallel to the bracket bolts. This saves the drilling of additional holes.
  • the short bores according to the invention between the lubrication grooves and the second oil channels allow larger measurement tolerances of the lubrication grooves in the bearing brackets, so that in a further embodiment of the invention the grooves, in particular annular grooves, can be cast in the bearing brackets of the camshaft bearings. Mechanical machining of the lubrication grooves can thus be avoided.
  • the cylinder head according to the invention has four valves, two intake valves 2 and two exhaust valves 3, which are actuated by two overhead camshafts 4 and 5 via tappets 6 and 7, respectively.
  • the camshafts 4 and 5 are mounted on the cylinder head 1; these bearings are designated 8 and 9 respectively.
  • a bearing bracket 10 common to both camshafts 4 and 5 is fastened to the cylinder head 1 with three bracket bolts 11.
  • the cup tappets 6 and 7 and the camshaft bearings 8 and 9 are lubricated via cast oil channels 12 and 13 which run parallel to the camshafts 4 and 5 and which in turn are connected to one another by the transverse bore 14 provided at the rear end.
  • cast oil channels 16 and 17 are provided, which are cast together with the oil channels 12 and 13, respectively. These oil channels 16 and 17 serve to lubricate the tappets 6 and 7 and open for this purpose in their bearing surfaces 6 'and 7'.
  • a bore 18 is provided which runs parallel to the bracket bolts and which opens into the upper flat end surface 19 of the cylinder head 1 and from there via lubricating grooves 20, 21 and 22 in the bracket 10 to the bearings 8 and 9 Guide camshafts 4 and 5.
  • the supply of the lubricating oil to the bearing 9 of the camshaft 5 takes place from the bearing 8 of the camshaft 4 via the annular lubricating groove 21 provided in the bearing bracket 10, which can be incorporated but also cast in.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Description

Die Erfindung bezieht sich auf einen Zylinderkopf für Brennkraftmaschinen mit hängenden Ventilen und Lagern für zwei obenliegende Nockenwellen, die mit Lagerbügeln und mit Lagerbügelschrauben befestigt sind, wobei zur Schmierung der Lager der Nockenwellen zwei parallel zu den Nockenwellen und unterhalb derselben durchgehend verlaufende gegossene erste Ölkanäle vorgesehen sind, welche durch eine normal zu diesen verlaufende Bohrung miteinander verbunden sind, wobei diese Bohrung wiederum mittels einer parallel zu den Lagerbügelschrauben verlaufenden Zuführbohrung an die Ölpumpe angeschlossen ist.The invention relates to a cylinder head for internal combustion engines with hanging valves and bearings for two overhead camshafts which are fastened with bearing brackets and with bracket bolts, two first oil passages running continuously parallel to and below the camshafts being provided for lubricating the camshaft bearings , which are connected to each other by a bore running normal to these, this bore in turn being connected to the oil pump by means of a feed bore running parallel to the bracket bolts.

Zylinderköpfe dieser Art, sind in der US-PS 4 621 597 beschrieben. Dabei sind die Ölzuführungen zu den Nockenwellenlagern, ausgehend von gegossenen ersten Ölkanälen, immer gebohrt, wobei die Bohrungen zumeist im Vergleich zu deren Durchmesser unverhältnismäßig lang sind und außerdem zu den Hauptbearbeitungsrichtungen schräg liegen. Dadurch ist die Herstellung dieser Bohrungen erschwert und äußerst aufwendig.Cylinder heads of this type are described in U.S. Patent 4,621,597. The oil feeds to the camshaft bearings, starting from cast first oil channels, are always drilled, whereby the bores are usually disproportionately long compared to their diameter and are also at an angle to the main machining directions. This makes the production of these holes difficult and extremely complex.

Diese Nachteile treten auch bei der GB-PS 2 130 672 auf, welche ein System zur Schmierung der Nockenwellenlager zeigt, welches neben parallel zu den Lagerbügelschrauben gebohrten, im Vergleich zum Durchmesser unverhältnismäßig langen Ölzuführungen auch schräg zu den Hauptbearbeitungsrichtungen verlaufende Bohrungen vorsieht.These disadvantages also occur in GB-PS 2 130 672, which shows a system for lubricating the camshaft bearings, which, in addition to drilling parallel to the bracket bolts and unreasonably long oil feeds compared to the diameter, also provides bores that run obliquely to the main machining directions.

Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile zu vermeiden und insbesondere möglichst kurze, in den Hauptbearbeitungsrichtungen liegende Verbindungsbohrungen zu schaffen. Erfindungsgemäß geschieht dies dadurch, daß von den gegossenen ersten Ölkanälen ebenfalls gegossene zweite Ölkanäle abzweigen, die zu den Gleitflächen der Ventilstößel führen, und zu den lagerbügelschrauben parallel verlaufende Bohrungen vorgesehen sind, welche die gegossenen zweiten Ölkanäle mit den Schmiernuten der Lager der Nockenwellen verbinden. Die gegossenen zweiten Ölkanäle sind so gestaltet, daß die parallel zu den Lagerschrauben liegenden Verbindungsbohrungen zu den Schmiernuten möglichst kurz ausgeführt werden können.The invention has for its object to avoid these disadvantages and in particular to create the shortest possible connection bores lying in the main machining directions. According to the invention, this is done in that cast second oil channels branch off from the cast first oil channels, which lead to the sliding surfaces of the valve lifters, and parallel bores are provided to the bracket bolts, which connect the cast second oil channels with the lubrication grooves of the bearings of the camshafts. The cast second oil channels are designed so that the connection bores parallel to the bearing screws to the lubrication grooves can be made as short as possible.

In weiterer Ausgestaltung der Erfindung kann die Verbindungsbohrung der beiden gegossenen Ölkanäle sowie die parallel zu den Lagerbügelschrauben verlaufende Zuführbohrung am hinteren Ende der Brennkraftmaschine angeordnet sein, was konstruktiv einfach zu lösen ist und außerdem die Anbringung der notwendigen Verschlußorgane für die Bohrungen ermöglicht.In a further embodiment of the invention, the connecting bore of the two cast oil channels and the feed bore running parallel to the bracket bolts can be arranged at the rear end of the internal combustion engine, which is structurally simple to solve and also enables the necessary closure members for the bores to be attached.

In weiterer Ausgestaltung der Erfindung können vorteilhaft zur Zuführung des Schmieröles zu den Nockenwellenlagern vom Austritt aus den parallel zu den Lagerbügelschrauben verlaufenden Bohrungen Nuten in den Lagerbügeln der Nockenwellenlager vorgesehen sein. Dies erspart die Anbringung von weiteren Bohrungen.In a further embodiment of the invention, grooves can advantageously be provided in the bearing brackets of the camshaft bearings for supplying the lubricating oil to the camshaft bearings from the outlet from the bores running parallel to the bracket bolts. This saves the drilling of additional holes.

Die erfindungsgemäß kurzen Bohrungen zwischen Schmiernuten und den zweiten Ölkanälen erlauben größere Meßtoleranzen der Schmiernuten in den Lagerbügeln, sodaß in weiterer Ausgestaltung der Erfindung die Nuten, insbesondere Ringnuten, in den Lagerbügeln der Nockenwellenlager gegossen sein können. Damit kann eine mechanische Bearbeitung der Schmiernuten vermieden werden.The short bores according to the invention between the lubrication grooves and the second oil channels allow larger measurement tolerances of the lubrication grooves in the bearing brackets, so that in a further embodiment of the invention the grooves, in particular annular grooves, can be cast in the bearing brackets of the camshaft bearings. Mechanical machining of the lubrication grooves can thus be avoided.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispieles näher erläutert. Es zeigen:

Fig. 1
die hintere Ansicht eines Zylinderkopfes gemäß der Erfindung,
Fig. 2
einen Schnitt nach der Linie II-II in Fig. 1,
Fig. 3
einen Schnitt nach der Linie III-III in Fig. 2,
Fig. 4
einen Schnitt nach der Linie IV-IV in Fig. 2 und 5 und
Fig. 5
eine Ansicht des Zylinderkopfes nach der Linie V-V in Fig. 4.
The invention is explained in more detail below using an exemplary embodiment. Show it:
Fig. 1
the rear view of a cylinder head according to the invention,
Fig. 2
2 shows a section along the line II-II in FIG. 1,
Fig. 3
2 shows a section along the line III-III in FIG. 2,
Fig. 4
a section along the line IV-IV in Fig. 2 and 5 and
Fig. 5
a view of the cylinder head along the line VV in Fig. 4th

Der generell mit 1 bezeichnete erfindungsgemäße Zylinderkopf weist vier Ventile, zwei Einlaßventiele 2 und zwei Auslaßventile 3 auf, welche von zwei obenliegenden Nockenwellen 4 und 5 über Tassenstößel 6 bzw. 7 betätigt werden. Die Nockenwellen 4 und 5 sind am Zylinderkopf 1 gelagert; diese Lager sind mit 8 bzw. 9 bezeichnet. Ein für beide Nockenwellen 4 und 5 gemeinsamer Lagerbügel 10 ist mit drei Lagerbügelschrauben 11 am Zylinderkopf 1 befestigt.The cylinder head according to the invention, generally designated 1, has four valves, two intake valves 2 and two exhaust valves 3, which are actuated by two overhead camshafts 4 and 5 via tappets 6 and 7, respectively. The camshafts 4 and 5 are mounted on the cylinder head 1; these bearings are designated 8 and 9 respectively. A bearing bracket 10 common to both camshafts 4 and 5 is fastened to the cylinder head 1 with three bracket bolts 11.

Die Schmierung der Tassenstößel 6 und 7 und den Nockenwellenlager 8 und 9 erfolgt über zu den Nockenwellen 4 und 5 parallel verlaufende gegossene Ölkanäle 12 und 13, die ihrerseits durch die am hinteren Ende vorgesehene Querbohrung 14 miteinander in Verbindung stehen. In die Querbohrung 14 mündet die parallel zu den Lagerbügelschrauben 11 verlaufende Bohrung 15, die von einer nicht dargestellten Ölpumpe gespeist wird.The cup tappets 6 and 7 and the camshaft bearings 8 and 9 are lubricated via cast oil channels 12 and 13 which run parallel to the camshafts 4 and 5 and which in turn are connected to one another by the transverse bore 14 provided at the rear end. The bore 15, which runs parallel to the bracket bolts 11 and which is fed by an oil pump, not shown, opens into the transverse bore 14.

Es sind weitere ebenfalls gegossene Ölkanäle 16 und 17 vorgesehen, die mit den Ölkanälen 12 bzw. 13 zusammengegossen sind. Diese Ölkanäle 16 und 17 dienen zur Schmierung der Tassenstößel 6 bzw. 7 und münden zu diesem Zweck in deren Lagerflächen 6' bzw. 7'. Zur Schmierung der Nockenwellenlager 8 und 9 ist eine parallel zu den Lagerbügelschrauben verlaufende Bohrung 18 vorgesehen, die in der oberen ebenen Abschlußfläche 19 des Zylinderkopfes 1 mündet und von da weg über Schmiernuten 20, 21 und 22 im Lagerbügel 10 zu den Lagerstellen 8 und 9 der Nockenwellen 4 und 5 führen. Die Zufuhr des Schmieröles zum Lager 9 der Nockenwelle 5 erfolgt vom Lager 8 der Nockenwelle 4 aus über die im Lagerbügel 10 angebrachte ringförmige Schmiernut 21, welche eingearbeitet aber auch eingegossen sein kann.Further also cast oil channels 16 and 17 are provided, which are cast together with the oil channels 12 and 13, respectively. These oil channels 16 and 17 serve to lubricate the tappets 6 and 7 and open for this purpose in their bearing surfaces 6 'and 7'. To lubricate the camshaft bearings 8 and 9, a bore 18 is provided which runs parallel to the bracket bolts and which opens into the upper flat end surface 19 of the cylinder head 1 and from there via lubricating grooves 20, 21 and 22 in the bracket 10 to the bearings 8 and 9 Guide camshafts 4 and 5. The supply of the lubricating oil to the bearing 9 of the camshaft 5 takes place from the bearing 8 of the camshaft 4 via the annular lubricating groove 21 provided in the bearing bracket 10, which can be incorporated but also cast in.

Der Raum an der oberen ebenen Abschlußfläche 19 des Zylinderkopfes 1 mit den Nockenwellen 4 und 5 und deren Lagern 8 und 9 ist mit einem Deckel 23 dicht abgeschlossen, zu welchem Zweck er mit der Dichtung 24 versehen und mittels der Schrauben 25 am Zylinderkopf 1 anschraubbar ist.The space on the upper flat end face 19 of the cylinder head 1 with the camshafts 4 and 5 and their bearings 8 and 9 is sealed with a cover 23, for which purpose it is provided with the seal 24 and can be screwed onto the cylinder head 1 by means of the screws 25 .

Claims (4)

  1. Cylinder head for an internal combustion engine with overhead valves (2,3) and bearings (8,9) for two overhead camshafts (4,5), in which a first set of two cast-in oil passages (12,13) running through parallel to and below the camshafts (4,5) are provided for lubricating the bearings (8,9) of the camshafts (4,5), these oil passages being connected to one another by way of a bore (14) running perpendicular thereto, this bore (14) in turn being connected to the oil pump by means of a feed bore (15) running parallel to the bearing stirrup screws (11), characterised in that a second set of likewise cast-in oil passages (16, 17) branch off from the first set of cast-in oil passages (12, 13), and lead to the rubbing surfaces of the valve tappets (6, 7), and that bores (18) are provided running parallel to the bearing stirrup screws (11) are and connecting the second set of cast-in oil passages (16, 17) to the lubricating grooves (20, 21, 22) of the bearings (8, 9) of the camshafts (4, 5).
  2. Cylinder head according to Claim 1, characterised in that the connecting bore (14), which connects the two first cast-in oil passages (12, 13), as well as the feed bore (15), which runs parallel to the bearing stirrup screws (11), are arranged at the rear end of the engine.
  3. Cylinder head according to Claim 1 or 2, characterised in that grooves are provided in the bearing stirrups (10) of the camshaft bearings (8, 9) to supply lubricating oil to the camshaft bearings (8, 9) from the outlet from the bores (18) which run parallel to the bearing stirrup screws (11).
  4. Cylinder head according to Claim 3, characterised in that the grooves (21, 22), in particular annular grooves (21), are cast in the bearing stirrups (10) of the camshaft bearings (8, 9).
EP19920890033 1991-02-12 1992-02-10 Cylinder head for an internal combustion engine Expired - Lifetime EP0499601B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT30391A AT402321B (en) 1991-02-12 1991-02-12 CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINES
AT303/91 1991-02-12

Publications (2)

Publication Number Publication Date
EP0499601A1 EP0499601A1 (en) 1992-08-19
EP0499601B1 true EP0499601B1 (en) 1994-01-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920890033 Expired - Lifetime EP0499601B1 (en) 1991-02-12 1992-02-10 Cylinder head for an internal combustion engine

Country Status (3)

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EP (1) EP0499601B1 (en)
AT (1) AT402321B (en)
DE (1) DE59200045D1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4435299A1 (en) * 1994-10-01 1996-04-04 Bayerische Motoren Werke Ag Cylinder cylinder head with cast longitudinal oil channel
DE102007019235A1 (en) 2007-04-24 2008-10-30 Daimler Ag Cylinder head for internal combustion engine has device for supplying hydraulic medium to elements of valve drive that consists of at least one channel in cylinder head, at least one guide arrangement in channel
CN102373978A (en) * 2011-10-31 2012-03-14 重庆长安汽车股份有限公司 Camshaft seat and camshaft cover matching structure of engine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3222231B2 (en) * 1992-12-25 2001-10-22 ヤマハ発動機株式会社 Engine lubrication device
DE19542495C5 (en) * 1995-11-15 2005-08-04 Daimlerchrysler Ag Cast cylinder head of a multi-cylinder internal combustion engine
DE19723342C1 (en) 1997-06-04 1998-09-03 Vaw Mandl & Berger Gmbh Cylinder head with casting core for oilduct fabrication in multi-cylinder IC engine
JP2000120413A (en) 1998-10-12 2000-04-25 Isuzu Motors Ltd Valve driving mechanism of multi-valve type dohc(double overhead camshaft) engine
CN111648835B (en) * 2020-06-22 2021-05-11 东风商用车有限公司 Camshaft seat assembly and bearing seat assembly group

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3604667A1 (en) * 1986-02-14 1987-08-20 Audi Ag Cast cylinder head for a multi-cylinder in-line internal combustion engine
US4745888A (en) * 1987-07-13 1988-05-24 General Motors Corporation Tappet sleeve lubrication
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4435299A1 (en) * 1994-10-01 1996-04-04 Bayerische Motoren Werke Ag Cylinder cylinder head with cast longitudinal oil channel
DE102007019235A1 (en) 2007-04-24 2008-10-30 Daimler Ag Cylinder head for internal combustion engine has device for supplying hydraulic medium to elements of valve drive that consists of at least one channel in cylinder head, at least one guide arrangement in channel
CN102373978A (en) * 2011-10-31 2012-03-14 重庆长安汽车股份有限公司 Camshaft seat and camshaft cover matching structure of engine

Also Published As

Publication number Publication date
DE59200045D1 (en) 1994-03-03
AT402321B (en) 1997-04-25
ATA30391A (en) 1996-08-15
EP0499601A1 (en) 1992-08-19

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