EP2501919A1 - Cylinder head for an internal combustion engine - Google Patents

Cylinder head for an internal combustion engine

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Publication number
EP2501919A1
EP2501919A1 EP10788265A EP10788265A EP2501919A1 EP 2501919 A1 EP2501919 A1 EP 2501919A1 EP 10788265 A EP10788265 A EP 10788265A EP 10788265 A EP10788265 A EP 10788265A EP 2501919 A1 EP2501919 A1 EP 2501919A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
bore
cooling
cylinder
cooling chamber
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
EP10788265A
Other languages
German (de)
French (fr)
Other versions
EP2501919B1 (en
Inventor
Thomas Brandl
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
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Filing date
Publication date
Application filed by AVL List GmbH filed Critical AVL List GmbH
Publication of EP2501919A1 publication Critical patent/EP2501919A1/en
Application granted granted Critical
Publication of EP2501919B1 publication Critical patent/EP2501919B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 
    • F02F1/24—Cylinder heads
    • F02F1/243—Cylinder heads and inlet or exhaust manifolds integrally cast together
    • 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
    • F02F1/242—Arrangement of spark plugs or injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005—Wankel engines

Definitions

  • the invention relates to a cylinder head for an internal combustion engine with liquid cooling and with a liquid-cooled exhaust gas collector formed integrally with the cylinder head, wherein the cylinder head has at least a first and a second coolant space through which a coolant flows, and wherein the area of the exhaust gas collector at least partially from the second Refrigerator is surrounded.
  • EP 0 856 650 A1 shows a cooling system for an outboard motor, wherein the exhaust ducts emanating from the combustion chamber are curved in a U-shape in the cylinder head and the flange faces for connecting an exhaust gas collector in the cylinder head plane.
  • the exhaust manifold is formed integrally with the cylinder housing.
  • US 7,051,685 B2 discloses a cylinder head with an integrated exhaust manifold, wherein the exhaust manifold is surrounded by a first and a second cooling space, wherein the two cooling chambers are interconnected by mitgegossene flow connections.
  • the first and the second cooling chamber are arranged one above the other.
  • the AT 500 442 Bl describes a cylinder head for an internal combustion engine with liquid cooling with a first central cooling chamber and an integrated exhaust manifold surrounding the second cooling chamber, wherein the coolant flow through the second cooling chamber is separated from the coolant flow through the first cooling chamber adjustable.
  • the object of the invention is to ensure a sufficient cooling of the exhaust manifold and thermally highly stressed areas of the fire deck in a cylinder head of the type mentioned in manufacturing technology simple way.
  • this is achieved in that the first and the second cooling space are flow-connected to one another via at least one bore.
  • the hole is arranged in the fire deck, in particular parallel to the cylinder head sealing surface. It is particularly advantageous if the bore is arranged between at least one inlet and at least one outlet valve of a cylinder, preferably between an inlet opening and an outlet opening. Furthermore, it can be provided that the bore is arranged between at least one outlet valve and an injection device or ignition device of a cylinder, preferably between an outlet opening and an orifice of the injection device or ignition device.
  • the bore emanates from a preferably outlet-side opening in an outer wall of the second cooling chamber, wherein preferably the opening is closed by a plug.
  • the bore with an elevated plane defined by the cylinder axes an angle ⁇ 90 °, preferably ⁇ 70 ° spans.
  • the first cooling space can be arranged predominantly on the inlet side and the second cooling space at least predominantly on the outlet side of the cylinder head.
  • FIG. 1 shows a cylinder head according to the invention in a side view.
  • FIG. 2 shows the cylinder head in a plan view.
  • Fig. 3 shows the cylinder head in a section along the line III-III in Fig
  • Fig. 4 shows the cylinder head in a section along the line IV-IV in Fig.
  • Fig. 5 shows the cylinder head in a section along the line V-V in Fig. 1st
  • Fig. 6 shows the cylinder head in a section along the line VI-VI in Fig. 1
  • Fig. 7 shows the cylinder head in a section along the line VII-VII in Fig. 2;
  • FIG. 8 shows the cylinder head in a section along the line VIII-VIII in FIG.
  • the figures show a cylinder head 1 for an internal combustion engine with an inlet valve and an outlet valve per cylinder, wherein in the figures the inlet openings with reference numeral 2 and the outlet openings with reference numerals
  • the cylinder head 1 has a first cooling space forming the main cooling jacket
  • first cooling chamber 4 for cooling adjacent to the combustion chamber thermally critical areas, wherein the first cooling chamber 4 is connected via coolant openings 5 in the fire deck 7 with a cooling jacket of a cylinder block, not shown.
  • the integrally formed with the cylinder head 1 exhaust manifold 8 is at least partially surrounded by a second cooling chamber 9.
  • the second cooling space 9 is substantially separated from the first cooling space 4 and only fluidically connected to it via holes 10 arranged in the fire deck 7.
  • the second cooling chamber 9 is connectable via its own transfer openings 6 with the cooling jacket of the cylinder block.
  • the bores 10 are in each case arranged between an inlet valve and an outlet valve of a cylinder, in particular between an inlet opening 2 and an outlet opening 3.
  • the bore 10 can also be arranged between an outlet valve and an injection device or ignition device opening into a combustion chamber, in particular between the outlet opening 3 and the mouth 11 of the injection device or ignition device into the combustion chamber, as is particularly well shown in FIG. 11 can be seen.
  • the bore 10 is formed substantially parallel to a cylinder head sealing plane 17 and spans an angle ⁇ ⁇ 90 °, in particular ⁇ 70 °, with a plane ⁇ formed by the cylinder axes. This ensures a particularly favorable heat dissipation from thermally critical areas of the fire deck 7.
  • the first cooling space 4 is disposed substantially on the inlet side E and the second cooling space 9 is disposed substantially on the outlet side A of the cylinder head 1.
  • a particularly simple production can be achieved if the holes 10 from an outlet-side outer wall 12 of the second cooling chamber 9 go out.
  • the openings 13 in the outer wall 12 can be subsequently closed by plugs.
  • the bore may have a restrictor 14 of defined cross-section.
  • the amount of coolant passing between the second and first cooling chambers 9, 4 can be adjusted via the cross section of the throttle restriction 14.
  • the coolant flows from the cooling jacket of the cylinder block not shown via the transfer openings 5, 6 in the first and second cooling chamber 4, 9. A portion of the coolant flows according to the arrows S from the second cooling chamber 9 in the first cooling chamber 4, wherein thermally critical Areas are optimally cooled. After cooling of thermally critical areas in the fire deck 7 and in the region of the exhaust manifold 8, the coolant of the first cooling chamber 4 and the second cooling chamber 9 leaves the cylinder head 1 through openings 15 and 16 arranged on the front side.

Abstract

The invention relates to a cylinder head (1) for an internal combustion engine having liquid cooling and having a liquid-cooled exhaust manifold (8) integral to the cylinder head (1), wherein the cylinder head (1) comprises at least one first and one second cooling chamber (4, 9) permeated by a coolant, and wherein the area of the exhaust manifold (8) is at least partially encompassed by the second cooling chamber (9). In order to ensure optimal heat dissipation from thermally critical areas in a simple to manufacture manner, according to the invention, the first and the second cooling chamber (4, 9) are fluidically connected to each other by means of at least one bore (10).

Description

Zylinderkopf für eine Brennkraftmaschine  Cylinder head for an internal combustion engine
Die Erfindung betrifft einen Zylinderkopf für eine Brennkraftmaschine mit Flüssigkeitskühlung und mit einem integral mit dem Zylinderkopf ausgebildeten flüs- sigkeitsgekühlten Abgassammler, wobei der Zylinderkopf zumindest einen ersten und einen zweiten, von einem Kühlmittel durchströmten Kühlraum aufweist, und wobei der Bereich des Abgassammlers zumindest teilweise vom zweiten Kühlraum umgeben ist. The invention relates to a cylinder head for an internal combustion engine with liquid cooling and with a liquid-cooled exhaust gas collector formed integrally with the cylinder head, wherein the cylinder head has at least a first and a second coolant space through which a coolant flows, and wherein the area of the exhaust gas collector at least partially from the second Refrigerator is surrounded.
Aus der US 2005/0087154 AI ist es bekannt, den Abgassammler integral mit dem Zylinderkopf auszuführen. Der durch einen oberen und einen unteren Teilkühlraum gebildete Hauptkühlraum ist thermisch mit dem Abgassammler verbunden. From US 2005/0087154 AI it is known to carry out the exhaust manifold integrally with the cylinder head. The main cooling space formed by an upper and a lower partial cooling space is thermally connected to the exhaust gas collector.
Die EP 0 856 650 AI zeigt ein Kühlsystem für einen Außenbordmotor, wobei die vom Brennraum ausgehenden Auslasskanäle im Zylinderkopf U-förmig gekrümmt sind und die Flanschflächen zum Anschluss eines Abgassammlers in der Zylinderkopfebene liegt. Der Abgassammler ist dabei integral mit dem Zylindergehäuse ausgebildet. EP 0 856 650 A1 shows a cooling system for an outboard motor, wherein the exhaust ducts emanating from the combustion chamber are curved in a U-shape in the cylinder head and the flange faces for connecting an exhaust gas collector in the cylinder head plane. The exhaust manifold is formed integrally with the cylinder housing.
Die US 7,051,685 B2 offenbart einen Zylinderkopf mit integriertem Abgassammler, wobei der Abgassammler von einem ersten und einem zweiten Kühlraum umgeben ist, wobei die beiden Kühlräume durch mitgegossene Strömungsverbindungen miteinander verbunden sind . Der erste und der zweite Kühlraum sind dabei übereinander angeordnet. US 7,051,685 B2 discloses a cylinder head with an integrated exhaust manifold, wherein the exhaust manifold is surrounded by a first and a second cooling space, wherein the two cooling chambers are interconnected by mitgegossene flow connections. The first and the second cooling chamber are arranged one above the other.
Die AT 500 442 Bl beschreibt einen Zylinderkopf für eine Brennkraftmaschine mit Flüssigkeitskühlung mit einem ersten zentralen Kühlraum und einen integrierten Abgassammler umgebenden zweiten Kühlraum, wobei der Kühlmittelstrom durch den zweiten Kühlraum getrennt vom Kühlmittelstrom durch den ersten Kühlraum einstellbar ist. The AT 500 442 Bl describes a cylinder head for an internal combustion engine with liquid cooling with a first central cooling chamber and an integrated exhaust manifold surrounding the second cooling chamber, wherein the coolant flow through the second cooling chamber is separated from the coolant flow through the first cooling chamber adjustable.
Aufgabe der Erfindung ist es, bei einem Zylinderkopf der eingangs genannten Art auf fertigungstechnisch einfache Weise eine ausreichende Kühlung des Abgassammler und von thermisch hoch beanspruchten Bereichen des Feuerdeckes sicherzustellen. The object of the invention is to ensure a sufficient cooling of the exhaust manifold and thermally highly stressed areas of the fire deck in a cylinder head of the type mentioned in manufacturing technology simple way.
Erfindungsgemäß wird dies dadurch erreicht, dass der erste und der zweite Kühlraum über zumindest eine Bohrung miteinander strömungsverbunden sind. Dadurch, dass die Strömungsverbindung zwischen dem ersten und dem zweiten Kühlraum über Bohrungen erfolgt, lässt sich eine einfache und thermisch optimale Gestaltung des ersten und des zweiten Kühlraumes erreiche, wobei vorzugsweise pro Zylinder zumindest eine Bohrung vorgesehen ist. Da die Kerne des ersten und des zweiten Kühlraumes gußtechnisch getrennt sind, ergeben sich wesentliche Vorteile in der Gußfertigung. According to the invention, this is achieved in that the first and the second cooling space are flow-connected to one another via at least one bore. Characterized in that the flow connection between the first and the second cooling chamber via bores, a simple and thermally optimal design of the first and the second cooling chamber can be achieved, wherein preferably at least one bore per cylinder is provided. Since the cores of the first and the second cold room are separated by casting technology, there are significant advantages in the cast production.
Eine besonders gute Kühlung von thermisch hoch beanspruchten Bereichen lässt sich erreichen, wenn die Bohrung im Feuerdeck, insbesondere parallel zur Zylin- derkopfdichtfläche, angeordnet ist. Besonders vorteilhaft ist es dabei, wenn die Bohrung zwischen zumindest einem Einlass- und zumindest einem Auslassventil eines Zylinders, vorzugsweise zwischen einer Einlassöffnung und einer Auslassöffnung, angeordnet ist. Weiters kann vorgesehen sein, dass die Bohrung zwischen zumindest einem Auslassventil und einer Einspritzeinrichtung oder Zündeinrichtung eines Zylinders, vorzugsweise zwischen einer Auslassöffnung und einer Mündung der Einspritzeinrichtung oder Zündeinrichtung angeordnet ist. Particularly good cooling of areas subject to high thermal stress can be achieved if the hole is arranged in the fire deck, in particular parallel to the cylinder head sealing surface. It is particularly advantageous if the bore is arranged between at least one inlet and at least one outlet valve of a cylinder, preferably between an inlet opening and an outlet opening. Furthermore, it can be provided that the bore is arranged between at least one outlet valve and an injection device or ignition device of a cylinder, preferably between an outlet opening and an orifice of the injection device or ignition device.
In einer fertigungstechnisch besonders einfachen Ausführung der Erfindung ist vorgesehen, dass die Bohrung von einer vorzugsweise auslassseitigen Öffnung in einer Außenwand des zweiten Kühlraumes ausgeht, wobei vorzugsweise die Öffnung durch einen Stopfen verschließbar ist. Um thermisch hoch beanspruchte Bereiche zwischen der Mündung der Einspritzeinrichtung oder Zündeinrichtung und dem Auslassventilsitz optimal zu kühlen, ist vorzugsweise vorgesehen, dass die Bohrung mit einer durch die Zylinderachsen aufgespannten Hochebene einen Winkel <90°, vorzugsweise <70° aufspannt. In a manufacturing technology particularly simple embodiment of the invention it is provided that the bore emanates from a preferably outlet-side opening in an outer wall of the second cooling chamber, wherein preferably the opening is closed by a plug. In order to cool optimally thermally stressed areas between the mouth of the injection device or ignition device and the exhaust valve seat, it is preferably provided that the bore with an elevated plane defined by the cylinder axes an angle <90 °, preferably <70 ° spans.
Der erste Kühlraum kann dabei überwiegend auf der Einlassseite und der zweite Kühlraum zumindest überwiegend auf der Auslassseite des Zylinderkopfes angeordnet sein. The first cooling space can be arranged predominantly on the inlet side and the second cooling space at least predominantly on the outlet side of the cylinder head.
Die Erfindung wird im Folgenden anhand der Figuren näher erläutert. Es zeigen : The invention will be explained in more detail below with reference to FIGS. Show it :
Fig. 1 einen erfindungsgemäßen Zylinderkopf in einer Seitenansicht; 1 shows a cylinder head according to the invention in a side view.
Fig. 2 den Zylinderkopf in einer Draufsicht; 2 shows the cylinder head in a plan view.
Fig. 3 den Zylinderkopf in einem Schnitt gemäß der Linie III-III in Fig Fig. 3 shows the cylinder head in a section along the line III-III in Fig
Fig. 4 den Zylinderkopf in einem Schnitt gemäß der Linie IV-IV in Fig . Fig. 4 shows the cylinder head in a section along the line IV-IV in Fig.
Fig. 5 den Zylinderkopf in einem Schnitt gemäß der Linie V-V in Fig. 1 Fig. 5 shows the cylinder head in a section along the line V-V in Fig. 1st
Fig. 6 den Zylinderkopf in einem Schnitt gemäß der Linie VI-VI in Fig . 1; Fig. 7 den Zylinderkopf in einem Schnitt gemäß der Linie VII-VII in Fig . 2; und Fig. 6 shows the cylinder head in a section along the line VI-VI in Fig. 1; Fig. 7 shows the cylinder head in a section along the line VII-VII in Fig. 2; and
Fig. 8 den Zylinderkopf in einem Schnitt gemäß der Linie VIII-VIII in Fig . 8 shows the cylinder head in a section along the line VIII-VIII in FIG.
4.  4th
Die Figuren zeigen einen Zylinderkopf 1 für eine Brennkraftmaschine mit einem Einlassventil und einem Auslassventil pro Zylinder, wobei in den Figuren die Einlassöffnungen mit Bezugszeichen 2 und die Auslassöffnungen mit BezugszeichenThe figures show a cylinder head 1 for an internal combustion engine with an inlet valve and an outlet valve per cylinder, wherein in the figures the inlet openings with reference numeral 2 and the outlet openings with reference numerals
3 angedeutet sind . Mit 2a sind die Einlasskanäle, mit Bezugszeichen 3a die Auslasskanäle bezeichnet. Die Auslasskanäle 3a münden in einen integral mit dem Zylinderkopf 1 geformten Abgassammler 8. 3 are indicated. 2a, the inlet channels, designated by reference numeral 3a, the outlet channels. The exhaust ports 3a open into an exhaust manifold 8 formed integrally with the cylinder head 1.
Der Zylinderkopf 1 weist einen den Hauptkühlmantel bildenden ersten KühlraumThe cylinder head 1 has a first cooling space forming the main cooling jacket
4 zur Kühlung von an den Brennraum grenzenden thermisch kritischen Bereichen auf, wobei der erste Kühlraum 4 über Kühlmittelöffnungen 5 im Feuerdeck 7 mit einem Kühlmantel eines nicht weiter dargestellten Zylinderblockes verbindbar ist. 4 for cooling adjacent to the combustion chamber thermally critical areas, wherein the first cooling chamber 4 is connected via coolant openings 5 in the fire deck 7 with a cooling jacket of a cylinder block, not shown.
Der integral mit dem Zylinderkopf 1 ausgebildete Abgassammler 8 ist zumindest teilweise von einem zweiten Kühlraum 9 umgeben. Der zweite Kühlraum 9 ist vom ersten Kühlraum 4 im Wesentlichen getrennt und nur über im Feuerdeck 7 angeordnete Bohrungen 10 mit diesem strömungsverbunden. Der zweite Kühlraum 9 ist über eigene Übertrittsöffnungen 6 mit dem Kühlmantel des Zylinderblockes verbindbar. The integrally formed with the cylinder head 1 exhaust manifold 8 is at least partially surrounded by a second cooling chamber 9. The second cooling space 9 is substantially separated from the first cooling space 4 and only fluidically connected to it via holes 10 arranged in the fire deck 7. The second cooling chamber 9 is connectable via its own transfer openings 6 with the cooling jacket of the cylinder block.
Die Bohrungen 10 sind dabei jeweils zwischen einem Einlassventil und einem Auslassventil eines Zylinders, insbesondere zwischen einer Einlassöffnung 2 und einer Auslassöffnung 3, angeordnet. Die Bohrung 10 kann dabei auch zwischen einem Auslassventil und einer in einen Brennraum mündenden Einspritzeinrichtung oder Zündeinrichtung, insbesondere zwischen der Auslassöffnung 3 und der Mündung 11 der Einspritzeinrichtung oder Zündeinrichtung in den Brennraum, angeordnet sein, wie besonders gut aus Fig . 11 zu sehen ist. Die Bohrung 10 ist dabei im Wesentlichen parallel zu einer Zylinderkopfdichtebene 17 ausgebildet und spannt mit einer durch die Zylinderachsen gebildeten Hochebene ε einen Winkel α <90°, insbesondere <70°, auf. Dadurch lässt sich eine besonders günstige Wärmeabfuhr aus thermisch kritischen Bereichen des Feuerdecks 7 gewährleisten. The bores 10 are in each case arranged between an inlet valve and an outlet valve of a cylinder, in particular between an inlet opening 2 and an outlet opening 3. In this case, the bore 10 can also be arranged between an outlet valve and an injection device or ignition device opening into a combustion chamber, in particular between the outlet opening 3 and the mouth 11 of the injection device or ignition device into the combustion chamber, as is particularly well shown in FIG. 11 can be seen. The bore 10 is formed substantially parallel to a cylinder head sealing plane 17 and spans an angle α <90 °, in particular <70 °, with a plane ε formed by the cylinder axes. This ensures a particularly favorable heat dissipation from thermally critical areas of the fire deck 7.
Wie aus den Figuren ersichtlich ist, ist der erste Kühlraum 4 im Wesentlichen auf der Einlassseite E und der zweite Kühlraum 9 im Wesentlichen auf der Auslassseite A des Zylinderkopfes 1 angeordnet. Eine besonders einfache Fertigung lässt sich erreichen, wenn die Bohrungen 10 von einer auslassseitigen Außenwand 12 des zweiten Kühlraumes 9 ausgehen. Die Öffnungen 13 in der Außenwand 12 können nachträglich durch Stopfen verschlossen werden. As can be seen from the figures, the first cooling space 4 is disposed substantially on the inlet side E and the second cooling space 9 is disposed substantially on the outlet side A of the cylinder head 1. A particularly simple production can be achieved if the holes 10 from an outlet-side outer wall 12 of the second cooling chamber 9 go out. The openings 13 in the outer wall 12 can be subsequently closed by plugs.
Wie aus Fig . 4 ersichtlich ist, kann die Bohrung eine Drosselstelle 14 mit definiertem Querschnitt aufweisen. Über den Querschnitt der Drosselstelle 14 kann die Menge des zwischen zweitem und ersten Kühlraum 9, 4 übertretenden Kühlmittels eingestellt werden. As shown in FIG. 4, the bore may have a restrictor 14 of defined cross-section. The amount of coolant passing between the second and first cooling chambers 9, 4 can be adjusted via the cross section of the throttle restriction 14.
Das Kühlmittel strömt aus dem nicht weiter dargestellten Kühlmantel des Zylinderblockes über die Übertrittsöffnungen 5, 6 in den ersten bzw. zweiten Kühlraum 4, 9. Ein Teil des Kühlmittels strömt entsprechend den Pfeilen S vom zweiten Kühlraum 9 in den ersten Kühlraum 4, wobei thermisch kritische Bereiche optimal gekühlt werden. Nach der Kühlung von thermisch kritischen Bereichen im Feuerdeck 7 und im Bereich des Abgassammlers 8 verlässt das Kühlmittel des ersten Kühlraumes 4 und des zweiten Kühlraumes 9 den Zylinderkopf 1 durch stirnseitig angeordnete Öffnungen 15 bzw. 16. The coolant flows from the cooling jacket of the cylinder block not shown via the transfer openings 5, 6 in the first and second cooling chamber 4, 9. A portion of the coolant flows according to the arrows S from the second cooling chamber 9 in the first cooling chamber 4, wherein thermally critical Areas are optimally cooled. After cooling of thermally critical areas in the fire deck 7 and in the region of the exhaust manifold 8, the coolant of the first cooling chamber 4 and the second cooling chamber 9 leaves the cylinder head 1 through openings 15 and 16 arranged on the front side.

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Zylinderkopf (1) für eine Brennkraftmaschine mit Flüssigkeitskühlung und mit einem integral mit dem Zylinderkopf (1) ausgebildeten flüssigkeitsge- kühlten Abgassammler (8), wobei der Zylinderkopf (1) zumindest einen ersten und einen zweiten, von einem Kühlmittel durchströmten Kühlraum (4, 9) aufweist, und wobei der Bereich des Abgassammlers (8) zumindest teilweise vom zweiten Kühlraum umgeben ist, dadurch gekennzeichnet, dass der erste und der zweite Kühlraum (9) über zumindest eine Bohrung (10) miteinander strömungsverbunden sind . Cylinder head (1) for an internal combustion engine with liquid cooling and with a liquid-cooled exhaust gas collector (8) formed integrally with the cylinder head (1), wherein the cylinder head (1) comprises at least first and second cooling spaces (4) flowed through by a coolant , 9), and wherein the region of the exhaust manifold (8) is at least partially surrounded by the second cooling space, characterized in that the first and the second cooling space (9) via at least one bore (10) are fluidly connected to each other.
2. Zylinderkopf (1) nach Anspruch 1, dadurch gekennzeichnet, dass der erste und der zweite Kühlraum (9) über zumindest eine Bohrung (10) pro Zylinder miteinander strömungsverbunden sind . 2. Cylinder head (1) according to claim 1, characterized in that the first and the second cooling chamber (9) via at least one bore (10) per cylinder are fluidly connected.
3. Zylinderkopf (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Bohrung (10) zwischen zumindest einem Einlass- und zumindest einem Auslassventil, vorzugsweise zwischen einer Einlassöffnung (2) und einer Auslassöffnung (3), eines Zylinders angeordnet ist. 3. Cylinder head (1) according to claim 1 or 2, characterized in that the bore (10) is arranged between at least one inlet and at least one outlet valve, preferably between an inlet opening (2) and an outlet opening (3) of a cylinder.
4. Zylinderkopf (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Bohrung (10) zwischen zumindest einem Auslassventil und einer Einspritzeinrichtung oder Zündeinrichtung eines Zylinders, vorzugsweise zwischen der Auslassöffnung (3) und einer Mündung (11) der Einspritzeinrichtung oder Zündeinrichtung, angeordnet ist. 4. Cylinder head (1) according to one of claims 1 to 3, characterized in that the bore (10) between at least one outlet valve and an injection device or ignition device of a cylinder, preferably between the outlet port (3) and an orifice (11) of the injection device or ignition device is arranged.
5. Zylinderkopf (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Bohrung (10) im Wesentlichen parallel zu einer Zylinder- kopfdichtfläche (17), vorzugsweise im Feuerdeck (7), angeordnet ist. 5. Cylinder head (1) according to one of claims 1 to 4, characterized in that the bore (10) is arranged substantially parallel to a cylinder head-sealing surface (17), preferably in the fire deck (7).
6. Zylinderkopf (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Bohrung (10) von einer vorzugsweise auslassseitigen Öffnung (13) in einer Außenwand (12) des zweiten Kühlraumes (9) ausgeht, wobei vorzugsweise die Öffnung (13) durch einen Stopfen verschließbar ist. 6. Cylinder head (1) according to one of claims 1 to 5, characterized in that the bore (10) from a preferably outlet-side opening (13) in an outer wall (12) of the second cooling chamber (9) emanates, preferably the opening ( 13) can be closed by a plug.
7. Zylinderkopf (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der erste Kühlraum (4) zumindest überwiegend auf einer Einlassseite (E) und der zweite Kühlraum (9) zumindest überwiegend auf einer Auslassseite (A) angeordnet ist. 7. Cylinder head (1) according to one of claims 1 to 6, characterized in that the first cooling chamber (4) at least predominantly on an inlet side (E) and the second cooling chamber (9) at least predominantly on an outlet side (A) is arranged.
8. Zylinderkopf (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Bohrung (10) mit einer durch zumindest zwei Zylinder- achsen aufgespannten Hochebene (ε) einen Winkel (a) <90°, vorzugsweise <70° aufspannt. 8. Cylinder head (1) according to one of claims 1 to 7, characterized in that the bore (10) with a through at least two cylinder Axes spanned high plane (ε) an angle (a) <90 °, preferably <70 ° spans.
EP10788265.6A 2009-11-19 2010-11-18 Cylinder head for an internal combustion engine Active EP2501919B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0183809A AT507479B1 (en) 2009-11-19 2009-11-19 CYLINDER HEAD FOR AN INTERNAL COMBUSTION ENGINE
PCT/EP2010/067734 WO2011061248A1 (en) 2009-11-19 2010-11-18 Cylinder head for an internal combustion engine

Publications (2)

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EP2501919A1 true EP2501919A1 (en) 2012-09-26
EP2501919B1 EP2501919B1 (en) 2020-10-14

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US (1) US8887674B2 (en)
EP (1) EP2501919B1 (en)
CN (1) CN102686862B (en)
AT (1) AT507479B1 (en)
WO (1) WO2011061248A1 (en)

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Also Published As

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EP2501919B1 (en) 2020-10-14
AT507479A3 (en) 2010-08-15
AT507479B1 (en) 2011-07-15
CN102686862B (en) 2016-02-03
US8887674B2 (en) 2014-11-18
WO2011061248A1 (en) 2011-05-26
CN102686862A (en) 2012-09-19
AT507479A2 (en) 2010-05-15
US20120285403A1 (en) 2012-11-15

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