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EP0016204A1 - Cylinder head obtained by pressure casting for water cooled internal combustion engines. - Google Patents

Cylinder head obtained by pressure casting for water cooled internal combustion engines.

Info

Publication number
EP0016204A1
EP0016204A1 EP79901038A EP79901038A EP0016204A1 EP 0016204 A1 EP0016204 A1 EP 0016204A1 EP 79901038 A EP79901038 A EP 79901038A EP 79901038 A EP79901038 A EP 79901038A EP 0016204 A1 EP0016204 A1 EP 0016204A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
water
longitudinal channel
passages
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.)
Granted
Application number
EP79901038A
Other languages
German (de)
French (fr)
Other versions
EP0016204B1 (en
Inventor
Jiri Seidl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to AT79901038T priority Critical patent/ATE2456T1/en
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0016204A1 publication Critical patent/EP0016204A1/en
Application granted granted Critical
Publication of EP0016204B1 publication Critical patent/EP0016204B1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/143—Controlling of coolant flow the coolant being liquid using restrictions
    • 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

Definitions

  • Cylinder head for water-cooled internal combustion engines that can be manufactured using the die casting process
  • the invention relates to a cylinder head which can be produced in the die casting process and which is of the type described in the preamble of claim 1.
  • the niche-like water spaces extend from different sides into the cylinder head. Part of the water spaces is closed by a flange of the intake manifold and / or exhaust system, which is also designed as a cover, while another part of the water spaces has to be closed in a complex manner by many individually pressed-in metal covers.
  • the cylinder head also has a large water content, which results in a high operating weight, a long warm-up period and locally low water speeds.
  • the holes for the cylinder head screws are arranged irregularly around the combustion chambers and additional pressed-in sheet metal covers or plugs are required to close transverse channels which run through some of these holes.
  • the invention has for its object a cylinder head which can be produced in the die casting process to create the type described, which has a targeted cooling of highly heat-stressed places with low water content and is easy and inexpensive to manufacture.
  • the invention solves this problem by the features of the characterizing part of claim 1. Due to the design according to the invention, a large part of the water spaces with a large water content to be closed to the outside is eliminated. In addition, in the case of drilled transverse ducts, only their inlet openings need to be closed by plugs, covers or flange attachments of the intake or exhaust manifold, which do not require much effort. A defined cross flow of the cooling water through the cylinder head is achieved through the transverse channels and the longitudinal channel serving to discharge the cooling water.
  • Embodiments and refinements of the invention result from the subclaims.
  • the feature of claim 2 results in good cooling of adjacent or adjacent parts of the combustion chambers and cylinders, especially in internal combustion engines with extremely small cylinder spacings or with molded cylinder liners. Due to the features of claim 3, the introduction of the transverse channels to holes for cylinder head screws is made possible and an offset valve arrangement with a short favors inlet and outlet channels and a corresponding spark plug arrangement.
  • the feature of claim 4 enables the shaping of the longitudinal channel during casting and by the feature of claim 5, the cooling of the combustion chamber zone located far from the spark plug is favored and the knock resistance of the combustion chamber is positively influenced.
  • the features of claims 6 and 7 support the formation of a defined cross flow through the cylinder head.
  • Fig. 1 shows a section along the line I-I of Fig. 2 of a die-cast cylinder head for water-cooled internal combustion engines and
  • a die-cast cylinder head 1 for water-cooled internal combustion engines has several niche-like water spaces 2, 3, 4 and 5.
  • the niche-like water spaces 2 to 5 can be formed towards the parting plane cylinder head-cylinder block and are arranged around combustion chambers 6.
  • the water spaces 2 and 3 are located on the outside of the cylinder head 1 and the water spaces 4 and 5 are arranged above passages from water space corners, which are determined by cylinder liners which may be cast together in the cylinder block.
  • the water spaces 2 to 5 are connected to one another by transverse channels 7 and 7 ′ arranged obliquely to the row of combustion chambers 6, the water spaces 4 being cut essentially on the rear side and the water spaces 5 essentially on the front side.
  • a high longitudinal channel 8 is arranged on one side of the cylinder head 1.
  • transverse channels 7 and 7 'or the water spaces 3 on this side connects the transverse channels 7 and 7 'or the water spaces 3 on this side to one another and serves to discharge the cooling water. He is Formable towards its front opening 9, so that only the oblique transverse channels 7 and 7 'have to be drilled.
  • Bores 12 for cylinder head screws are arranged perpendicular to the cylinder head-cylinder block parting plane and on a circle around each combustion chamber 6 or the central longitudinal axis of its cylinder.
  • Two adjacent wide spaces 6 each have two of the bores 12 in common.
  • two niche-like water spaces 4 and 5 lie on a connecting line of two bores 12, which is intended to run perpendicular to the row of combustion chambers 6. Due to their oblique arrangement, the transverse channels 7 and 7 'pass the bores 12.
  • FIG. 1 shows the cylinder head 1 together with the upper section of a cylinder block 13 and a cylinder head gasket 14 arranged between them.
  • 2 to 5 leading passages 16, 17, 18 and 19 are arranged in the cylinder head gasket 14 from the water jacket 15 of the cylinder block 13 into the niche-like water spaces.
  • the most distant passages 16 from the longitudinal channel 8 are the largest and each have at least the same cross section as a transverse channel 7 or 7 '.
  • the passages 19 closest to the longitudinal channel 8 are the smallest and their cross section is approximately 1/4 to 1/2 of the cross section of the passages 16.
  • Bores 20 for receiving spark plugs, not shown, are arranged on the side of the cylinder head 1 opposite the longitudinal channel 8.
  • the valve chamber 21, collecting and guide channels 23 are arranged below the camshaft bearings 22, and the lubricating oil emerging from the camshaft bearings quickly to drain channels 24. As a result, the lubricating oil gets back into the cylinder block 13 without excessive heating.
  • the arrangement of the niche-like water spaces 2 to 5 towards the cylinder head gasket side results in a good formability of the cylinder head 1.
  • the transverse channels 7 and 7 ' lead particularly close to hot cylinder head locations, such as outlet channels 25, valve seats 26 and 27 and the holes 20 for the spark plugs , so that a good cooling effect is achieved especially at these highly heat-stressed places.
  • This is favored by the cross-sectional selection of the passages 16 to 19 arranged in the cylinder head gasket 14 to the niche-like water spaces, which are severely throttled on the side of the longitudinal channel 8, so that there is a defined flow through the transverse channels 7 and 7 '. Due to their parallel arrangement, all transverse channels 7 and 7 'can be drilled together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

Dans une culasse de cylindre (1) refroidi a l'eau d'un moteur a combustion interne, qui peut etre obtenu par coulee sous pression, tous les volumes d'eau (2 a 5) en forme de niches s'etendent jusqu'a l'interface culasse-bloc de cylindre et entourent essentiellement les chambres d'explosion (6). Ces volumes d'eau (2 a 5) sont relies a la chemise d'eau du bloc de cylindre (13) a l'aide de passages (16 a 19) pratiques dans le joint de culasse (14) et sont interconnectes au moyen de conduits transversaux (7, 7') et d'un conduit longitudinal, lateral (8). Le sommet du conduit longitudinal (8) constitue le point le plus haut des volumes d'eau (2 a 5) et des conduits (7, 7' et 8) et le conduit longitudinal (8) est muni d'une sortie d'eau (9). Le refroidissement de la culasse (1) est controle efficacement grace a la disposition particuliere des volumes d'eau (2 a 5), des conduits transversaux (7, 7') et des passages (16 a 19) du joint de culasse (14) par rapport aux organes principaux de la culasse (1). 00In a water-cooled cylinder head (1) of an internal combustion engine, which can be obtained by pressure casting, all the volumes of water (2 to 5) in the form of niches extend to at the cylinder head-cylinder block interface and essentially surround the explosion chambers (6). These water volumes (2 to 5) are connected to the water jacket of the cylinder block (13) by means of passages (16 to 19) convenient in the cylinder head gasket (14) and are interconnected by means of transverse ducts (7, 7 ') and a longitudinal, lateral duct (8). The top of the longitudinal duct (8) constitutes the highest point of the water volumes (2 to 5) and of the ducts (7, 7 'and 8) and the longitudinal duct (8) is provided with an outlet of water (9). The cooling of the cylinder head (1) is effectively controlled thanks to the particular arrangement of the water volumes (2 to 5), of the transverse ducts (7, 7 ') and of the passages (16 to 19) of the cylinder head gasket (14 ) relative to the main components of the cylinder head (1). 00

Description

Im Druckgießverfahren herstellbarer Zylinderkopf für wassergekühlte BrennkraftmaschinenCylinder head for water-cooled internal combustion engines that can be manufactured using the die casting process
Die Erfindung bezieht sich auf einen im Druckgießverfahren herstellbaren Zylinderkopf der im Oberbegriff des Anspruches 1 beschriebenen Bauart.The invention relates to a cylinder head which can be produced in the die casting process and which is of the type described in the preamble of claim 1.
Bei einem bekannten Druckguß-Zylinderkopf dieser BauartIn a known die-cast cylinder head of this type
(DE-OS 21 13 840) erstrecken sich die nischenartigen Wasserräume von verschiedenen Seiten her in den Zylinderkopf. Ein Teil der Wasserräume ist durch einen zugleich als Deckel ausgebildeten Flansch der Saugrohr- und/oder Abgasanlagever> schlossen, während ein anderer Teil der Wasserräume aufwendig durch viele einzelne eingepreßte Blechdeckel verschlossen werden muß. Der Zylinderkopf hat außerdem einen großen Wasserinhalt, durch den sich ein hohes Betriebsgewicht, eine lange Warmlaufdauer und örtlich geringe Wassergeschwindig- keiten ergeben. Ferner sind die Bohrungen für die Zylinderkopfschrauben unregelmäßig um die Brennräume angeordnet und es sind zusätzliche eingepreßte Blechdeckel oder Stopfen zum Verschließen von Querkanälen erforderlich, die quer durch einige dieser Bohrungen verlaufen.(DE-OS 21 13 840) the niche-like water spaces extend from different sides into the cylinder head. Part of the water spaces is closed by a flange of the intake manifold and / or exhaust system, which is also designed as a cover, while another part of the water spaces has to be closed in a complex manner by many individually pressed-in metal covers. The cylinder head also has a large water content, which results in a high operating weight, a long warm-up period and locally low water speeds. Furthermore, the holes for the cylinder head screws are arranged irregularly around the combustion chambers and additional pressed-in sheet metal covers or plugs are required to close transverse channels which run through some of these holes.
Der Erfindung liegt die Aufgabe zugrunde, einen im Druckgießverfahren herstellbaren Zylinderkopf der im Oberbegriff des Anspruches 1 beschriebenen Bauart zu schaffen, der bei geringem Wasserinhalt eine gezielte Kühlung hoch wärmebelasteter Stellen aufweist und einfach und kostengünstig herstellbar ist.The invention has for its object a cylinder head which can be produced in the die casting process to create the type described, which has a targeted cooling of highly heat-stressed places with low water content and is easy and inexpensive to manufacture.
Diese Aufgabe löst die Erfindung durch die Merkmale des kennzeichnenden Teiles des Anspruches 1. Durch die erfindungsgemäße Ausbildung entfällt ein großer Teil der nach außen zu verschießenden Wasserräume mit großem Wasserinhalt. Außerdem brauchen bei gebohrten Querkanälen nur deren Ein- gangsöffnungen durch Stopfen, Deckel oder Flanschansätze des Ansaug- oder Abgassammlers verschlossen zu werden, die keinen großen Aufwand erfordern. Durch die Querkanäle und den zur Kühlwasserableitung dienenden Längskanal wird eine definierte Querströmung des Kühlwassers durch den Zylinderkopf erzielt.The invention solves this problem by the features of the characterizing part of claim 1. Due to the design according to the invention, a large part of the water spaces with a large water content to be closed to the outside is eliminated. In addition, in the case of drilled transverse ducts, only their inlet openings need to be closed by plugs, covers or flange attachments of the intake or exhaust manifold, which do not require much effort. A defined cross flow of the cooling water through the cylinder head is achieved through the transverse channels and the longitudinal channel serving to discharge the cooling water.
Es ist zwar bereits bekannt (DE-OS 2756006), einen Zylinderkopf nur mit zur Zylinderkopfdichtungsseite of f enen ring abschnitt-förmigen Wasserräumen und einem hochliegendenIt is already known (DE-OS 2756006), a cylinder head only with open to the cylinder head gasket side of a ring-shaped water spaces and a high
Längskanal zu versehen, jedoch sind bei diesem Zylinderkopf keine Querkanäle mit einer gezielten Kühlwirkung vorhanden und das Kühlwasser wird im wesentlichen nur längs durch den Zylinderkopf geleitet, so daß örtliche Temperaturspitzen auftreten.Longitudinal channel to be provided, but there are no transverse channels with a targeted cooling effect in this cylinder head and the cooling water is essentially only passed longitudinally through the cylinder head, so that local temperature peaks occur.
Ausführungsformen und Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. Das Merkmal des Anspruches 2 ergibt eine gute Kühlung von einander benachbarten bzw. aneinander angrenzenden Teilen der Brennräume und Zylinder, insbesondere bei Brennkraftmaschinen mit extrem kleinen Zylinderabständen oder mit zusammengegossenen Zylinderlaufbüchsen. Durch die Merkmale des Anspruches 3 wird das Vor beiführen der Querkanäle an Bohrungen für Zylinderkopfsshrauben ermöglicht und eine versetzte Ventilanordnung mit kur zen Ein- und Auslaßkanälen und einer entsprechenden Zündkerzenanordnung begünstigt. Das Merkmal des Anspruches 4 ermöglicht das Ausformen des Längskanales beim Gießen und durch das Merkmal des Anspruches 5 wird die Kühlung der weit von der Zündkerze entfernt liegenden Brennraumzone begünstigt und die Klopffestigkeit des Brennraumes positiv beeinflußt. Die Merkmale der Ansprüche 6 und 7 unterstützen die Bildung einer definierten Querströmung durch den Zylinderkopf.Embodiments and refinements of the invention result from the subclaims. The feature of claim 2 results in good cooling of adjacent or adjacent parts of the combustion chambers and cylinders, especially in internal combustion engines with extremely small cylinder spacings or with molded cylinder liners. Due to the features of claim 3, the introduction of the transverse channels to holes for cylinder head screws is made possible and an offset valve arrangement with a short favors inlet and outlet channels and a corresponding spark plug arrangement. The feature of claim 4 enables the shaping of the longitudinal channel during casting and by the feature of claim 5, the cooling of the combustion chamber zone located far from the spark plug is favored and the knock resistance of the combustion chamber is positively influenced. The features of claims 6 and 7 support the formation of a defined cross flow through the cylinder head.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:In the drawing, an embodiment of the invention is shown. Show it:
Fig. 1 einen Schnitt nach der Linie I-I der Fig. 2 eines Druckguß-Zylinderkopfes für wassergekühlte Brenn- kraftmaschinen undFig. 1 shows a section along the line I-I of Fig. 2 of a die-cast cylinder head for water-cooled internal combustion engines and
Fig. 2 einen Schnitt nach der Linie II-II der Fig. 1.2 shows a section along the line II-II of FIG. 1st
Ein Druckguß-Zylinderkopf 1 für wassergekühlte Brennkraftmaschinen weist mehrere nischenartige Wasserräume 2, 3, 4 und 5 auf. Die nischenartigen Wasserräume 2 bis 5 sind zur Trennebene Zylinderkopf-Zylinderblock hin ausformbar und rings um Brennräume 6 angeordnet. Die Wasserräume 2 und 3 liegen zu Außenseiten des Zylinderkopfes 1 hin und die Wasserräume 4 und 5 sind über Durchlässen aus Wasserraumecken angeordnet, die von ggf. zusammengegossenen Zylinderlauf- büchsen im Zylinderblock bestimmt sind. Die Wasserräume 2 bis 5 sind durch schräg zur Reihe der Brennräume 6 angeordnete Querkanäle 7 und 7' miteinander verbunden, wobei die Wasserräume 4 im wesentlichen auf der Rückseite und die Was- serräume 5 im wesentlichen auf der Vorderseite angeschnitten sind. Ein hochliegender Längskanal 8 ist auf einer Seite des Zylinderkopfes 1 angeordnet. Er verbindet die Querkanäle 7 und 7' bzw. die auf dieser Seite liegenden Wasserräume 3 miteinander und dient zum Abführen des Kühlwassers. Er ist zu seiner Stirnöffnung 9 hin ausformbar, so daß nur die schrägen Querkanäle 7 und 7' gebohrt werden müssen. Die Ein- gangsöffnungen 10 der Querkanäle 7 und 7' sind durch Stopfen 11 verschlossen.A die-cast cylinder head 1 for water-cooled internal combustion engines has several niche-like water spaces 2, 3, 4 and 5. The niche-like water spaces 2 to 5 can be formed towards the parting plane cylinder head-cylinder block and are arranged around combustion chambers 6. The water spaces 2 and 3 are located on the outside of the cylinder head 1 and the water spaces 4 and 5 are arranged above passages from water space corners, which are determined by cylinder liners which may be cast together in the cylinder block. The water spaces 2 to 5 are connected to one another by transverse channels 7 and 7 ′ arranged obliquely to the row of combustion chambers 6, the water spaces 4 being cut essentially on the rear side and the water spaces 5 essentially on the front side. A high longitudinal channel 8 is arranged on one side of the cylinder head 1. It connects the transverse channels 7 and 7 'or the water spaces 3 on this side to one another and serves to discharge the cooling water. He is Formable towards its front opening 9, so that only the oblique transverse channels 7 and 7 'have to be drilled. The inlet openings 10 of the transverse channels 7 and 7 'are closed by plugs 11.
Bohrungen 12 für nicht dargestellte Zylinderkopfschrauben sind senkrecht zur Trennebene Zylinderkopf-Zylinderblockund auf einem Kreis um jeden Brennraum 6 bzw. die Mittellängs achse von dessen Zylinder angeordnet. Zwei benachbarte Breinnräume 6 haben je zwei der Bohrungen 12 gemeinsam. Jeweils zwei nischenartige Wasserräume 4 und 5 liegen auf einer senkrecht zur Reihe der Brennräume 6 verlaufend gedachten Verbindungslinie zweier Bohrungen 12. Durch ihre schräge Anordnung gehen die Querkanäle 7 und 7' an den Bohrungen 12 vorbei.Bores 12 for cylinder head screws, not shown, are arranged perpendicular to the cylinder head-cylinder block parting plane and on a circle around each combustion chamber 6 or the central longitudinal axis of its cylinder. Two adjacent wide spaces 6 each have two of the bores 12 in common. In each case two niche-like water spaces 4 and 5 lie on a connecting line of two bores 12, which is intended to run perpendicular to the row of combustion chambers 6. Due to their oblique arrangement, the transverse channels 7 and 7 'pass the bores 12.
In Fig. 1 ist der Zylinderkopf 1 zusammen mit dem oberen Abschnitt eines Zylinderblockes 13 und einer dazwischen angeordneten Zylinderkopfdichtung 14 dargestellt. In der Zylinderkopfdichtung 14 sind vom Wassermantel 15 des Zylinderblockes 13 in die nischenartigen Wasserräume 2 bis 5 führende Durchlässe 16, 17, 18 und 19 angeordnet. Die am weitesten vom Längskanal 8 entfernten Durchlässe 16 sind am größten und haben jeweils mindestens den gleichen Querschnitt wie ein Querkanal 7 bzw. 7'. Die dem Längskanal 8 nächstliegenden Durchlässe 19 sind am kleinsten und ihr Querschnitt beträgt etwa 1/4 bis 1/2 des Querschnittes der Durchlässe 16.1 shows the cylinder head 1 together with the upper section of a cylinder block 13 and a cylinder head gasket 14 arranged between them. 2 to 5 leading passages 16, 17, 18 and 19 are arranged in the cylinder head gasket 14 from the water jacket 15 of the cylinder block 13 into the niche-like water spaces. The most distant passages 16 from the longitudinal channel 8 are the largest and each have at least the same cross section as a transverse channel 7 or 7 '. The passages 19 closest to the longitudinal channel 8 are the smallest and their cross section is approximately 1/4 to 1/2 of the cross section of the passages 16.
Bohrungen 20 zur Aufnahme nicht dargestellter Zündkerzen sind auf der dem Längskanal 8 gegenüberliegenden Seite des Zylinderkopfes 1 angeordnet. Im oberen Teil des Zylinderkopfes 1 , der Ventilkammer 21 , sind unterhalb von Nockenwellenlagern 22 Auffang- und Leitrinnen 23 angeordnet, die aus den Nockenwellenlagern austretendes Schmieröl schnell zu Ablaufkanälen 24 leiten. Dadurch gelangt das Schmieröl ohne übermäßige Erwärmung in den Zylinderblock 13 zurück.Bores 20 for receiving spark plugs, not shown, are arranged on the side of the cylinder head 1 opposite the longitudinal channel 8. In the upper part of the cylinder head 1, the valve chamber 21, collecting and guide channels 23 are arranged below the camshaft bearings 22, and the lubricating oil emerging from the camshaft bearings quickly to drain channels 24. As a result, the lubricating oil gets back into the cylinder block 13 without excessive heating.
Durch die Anordnung der nischenartigen Wasserräume 2 bis 5 zur Zylinderkopfdichtungsseite hin ergibt sich eine gute Ausformbarkeit des Zylinderkopfes 1. Die Querkanäle 7 und 7' führen besonders dicht an heißen Zylinderkopfstellen, wie Auslaßkanälen 25, Ventilsitzen 26 und 27 und den Bohrungen 20 für die Zündkerzen vorbei, so daß besonders an diesen hoch wärmebelasteten Stellen eine gute Kühlwirkung erzielt wird. Dies wird durch die Querschnittsauswahl der in der Zylinderkopfdichtung 14 angeordneten Durchlässe 16 bis 19 zu den nischenartigen Wasserräumen begünstigt, die auf der Seite des Längskanals 8 stark gedrosselt sind, so daß sich eine definierte Strömung durch die Querkanäle 7 und 7' ergibt. Aufgrund ihrer parallelen Anordnung können alle Querkanäle 7 und 7' gemeinsam gebohrt werden. Sie benötigen jeweils nur einen kleinen üblichen dichtungslosen Blechdeckel als Stopfen 11. Durch ihre schräge Anordnung beeinträchtigen die Querkanäle 7 und 7' die Bohrungen 12 für Zylinderkopf- schrauben nicht und begünstigen eine versetzte Ventilanordnung mit kurzen Ein- und Auslaßkanälen und einer entsprechen-den Zündkerzenanordnung. The arrangement of the niche-like water spaces 2 to 5 towards the cylinder head gasket side results in a good formability of the cylinder head 1. The transverse channels 7 and 7 'lead particularly close to hot cylinder head locations, such as outlet channels 25, valve seats 26 and 27 and the holes 20 for the spark plugs , so that a good cooling effect is achieved especially at these highly heat-stressed places. This is favored by the cross-sectional selection of the passages 16 to 19 arranged in the cylinder head gasket 14 to the niche-like water spaces, which are severely throttled on the side of the longitudinal channel 8, so that there is a defined flow through the transverse channels 7 and 7 '. Due to their parallel arrangement, all transverse channels 7 and 7 'can be drilled together. You only need a small, customary, sealless sheet metal cover as a plug 11. Because of their oblique arrangement, the transverse channels 7 and 7 'do not impair the holes 12 for cylinder head screws and favor an offset valve arrangement with short inlet and outlet channels and a corresponding spark plug arrangement.

Claims

Patentansprüche Claims
1. Im Druckgießverfahren herstellbarer Zylinderkopf fürwas sergekühlte Brennkraftmaschinen mit in Reihen angeordne ten Zylindern,1. Die-cast cylinder head for water-cooled internal combustion engines with cylinders arranged in rows,
- mit mehreren an den Kühlmantel des Zylinderblockes an schließbaren nischenartigen Wasserräumen,- with several niche-like water spaces that can be closed on the cooling jacket of the cylinder block,
- die durch Querkanäle und- through cross channels and
- durch einen seitlichen Längskanal miteinander verbun den sind, dadurch gekennzeichnet, daß - alle nischenartigen Wasserräume (2, 3, 4 und 5) zur Trennebene Zylinderkopf-Zylinderblock hin ausformbar und- Connected to each other by a lateral longitudinal channel, characterized in that - All niche-like water spaces (2, 3, 4 and 5) can be formed towards the parting plane cylinder head-cylinder block and
- im wesentlichen rings um die Brennräume (6) angeordnet sind, - daß die obere Begrenzung des Längskanales (8) die höch ste Stelle der Wasserräume (2 bis 5) und der Kanäle (7, 8) ist und- Are arranged essentially around the combustion chambers (6), - that the upper limit of the longitudinal channel (8) is the highest point of the water spaces (2 to 5) and the channels (7, 8) and
- der Längskanal (8) einen Wasseraustritt (Stirnöffnung 9) aufweist.- The longitudinal channel (8) has a water outlet (front opening 9).
2. Zylinderkopf nach Anspruch 1 mit Bohrungen für Zylinder kopfschrauben, dadurch gekennzeichnet,2. Cylinder head according to claim 1 with holes for cylinder head screws, characterized in
- daß jedem Brennraum (6) vier der Bohrungen (12) derart zugeordnet sind, daß sie etwa auf einem Kreis um seine Mitte liegen, - daß zwei benachbarte Brennraume (6) je zwei Bohrungen (12) gemeinsam haben und - daß jeweils zwei nischenartige Wasserräume (4, 5) im wesentlichen auf einer senkrecht zur Reihe der Brennräume (6) verlaufend gedachten Verbindungslinie zweier Bohrungen (12) liegen, wobei sie jeweils einer der Bohrungen (12) und mindestens einem Brennraum (6) benachbart sind.- That each combustion chamber (6) four of the bores (12) are assigned such that they are approximately in a circle around his In the middle are - that two adjacent combustion chambers (6) each have two bores (12) in common and - that two niche-like water spaces (4, 5) each essentially on a connecting line of two bores (12 ), each being adjacent to one of the bores (12) and at least one combustion chamber (6).
3. Zylinderkopf nach Anspruch 2, bei dem jeweils ein Querkanal zwischen zwei benachbarten Brennräumen und ein weiterer Querkanal parallel dazu zwischen Ein- und Auslaßventil hindurchführt, dadurch gekennzeichnet, - daß je ein Querkanal (7') am Ende der Reihe der Brennräume (6) angeordnet ist,3. Cylinder head according to claim 2, in which in each case a transverse channel between two adjacent combustion chambers and a further transverse channel runs parallel to it between the inlet and exhaust valve, characterized in that - a transverse channel (7 ') at the end of the row of combustion chambers (6) is arranged
- daß die Querkanäle (7 und 7') schräg zur Reihe der Brennräume (6) angeordnet sind und- That the transverse channels (7 and 7 ') are arranged obliquely to the row of combustion chambers (6) and
- daß die auf der gedachten Verbindungslinie liegenden Wasserräume (4 und 5) auf verschiedenen Seiten der- That the water spaces lying on the imaginary connecting line (4 and 5) on different sides of the
Querkanäle (7') angeordnet und entsprechend von verschiedenen Seiten durch die Querkanäle (7') angeschnitten sind.Cross channels (7 ') are arranged and cut accordingly from different sides through the cross channels (7').
4. Zylinderkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,4. Cylinder head according to one of the preceding claims, characterized in that
- daß der Längskanal (8) an einem Ende des Zylinderkopfes (1) mit einer Stirnöffnung (9) endet und- That the longitudinal channel (8) at one end of the cylinder head (1) with an end opening (9) ends and
- sich zu dieser hin stetig erweitert.- is constantly expanding towards this.
5. Zylinderkopf nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet,5. Cylinder head according to one of the preceding claims, characterized in that
- daß Bohrungen (15) für Zündkerzen auf der Seite des Zylinderkopfes (1) angeordnet sind, die dem dicht an den Brennräumen (6) entlangführenden Längskanal (8)ge- genüberliegt. - That bores (15) for spark plugs are arranged on the side of the cylinder head (1) which lies opposite the longitudinal channel (8) which runs close to the combustion chambers (6).
6. Brennkraftmaschine mit einem Zylinderkopf nach einem der vorhergehenden Ansprüche und einer zwischen Zylinderkopf und Zylinderblock angeordneten Zylinderkopfdichtung, die vom Wassermantel des Zylinderblockes zu den nischenarti gen Wasserräumen führende Durchlässe aufweist, dadurch gekennzeichnet,6. Internal combustion engine with a cylinder head according to one of the preceding claims and a cylinder head gasket arranged between the cylinder head and cylinder block, which has leading passages from the water jacket of the cylinder block to the nischenarti gene water spaces, characterized in that
- daß die Querschnitte der Durchlässe (16 bis 19) mitzu nehmender Entfernung vom Längskanal (8) größer werden.- That the cross sections of the passages (16 to 19) to be taken distance from the longitudinal channel (8) are larger.
7. Brennkraftmaschine nach Anspruch 6, dadurch gekennzeich net,7. Internal combustion engine according to claim 6, characterized in that
- daß die auf der dem Längskanal (8) gegenüberliegenden Seite des Zylinderkopfes (1) angeordneten Durchlässe (16) jeweils mindestens den gleichen Querschnitt wie ein Querkanal (7, 7') haben und- That on the side of the cylinder head (1) opposite the longitudinal channel (8) arranged passages (16) each have at least the same cross section as a transverse channel (7, 7 ') and
- daß die dem Längskanal (8) benachbarten Durchlässe (19) einen wesentlich kleineren Querschnitt haben, der e twa 1/4 bis 1/2 des erstgenannten Querschnittes beträgt. - That the longitudinal channel (8) adjacent passages (19) have a substantially smaller cross-section, which is about 1/4 to 1/2 of the first cross-section.
EP79901038A 1978-09-08 1980-04-08 Cylinder head obtained by pressure casting for water cooled internal combustion engines Expired EP0016204B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79901038T ATE2456T1 (en) 1978-09-08 1979-08-10 CYLINDER HEAD FOR WATER-COOLED COMBUSTION ENGINES MANUFACTURED BY DIE-CASTING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2839199 1978-09-08
DE2839199A DE2839199C2 (en) 1978-09-08 1978-09-08 Cylinder head for water-cooled internal combustion engines that can be manufactured using the die-casting process

Publications (2)

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EP0016204A1 true EP0016204A1 (en) 1980-10-01
EP0016204B1 EP0016204B1 (en) 1983-02-09

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ID=6048999

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EP79901038A Expired EP0016204B1 (en) 1978-09-08 1980-04-08 Cylinder head obtained by pressure casting for water cooled internal combustion engines

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US (1) US4377990A (en)
EP (1) EP0016204B1 (en)
JP (1) JPS55500775A (en)
DE (2) DE2839199C2 (en)
ES (1) ES251746Y (en)
IT (1) IT1162582B (en)
WO (1) WO1980000595A1 (en)

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Also Published As

Publication number Publication date
DE2839199C2 (en) 1983-01-05
JPS55500775A (en) 1980-10-16
ES251746Y (en) 1981-11-01
WO1980000595A1 (en) 1980-04-03
EP0016204B1 (en) 1983-02-09
ES251746U (en) 1981-03-01
US4377990A (en) 1983-03-29
IT7925455A0 (en) 1979-09-04
DE2839199A1 (en) 1980-03-13
DE2964719D1 (en) 1983-03-17
IT1162582B (en) 1987-04-01

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