EP1554483B1 - Cylinder head for a water-cooled internal combustion piston engine having inner reinforcement - Google Patents

Cylinder head for a water-cooled internal combustion piston engine having inner reinforcement Download PDF

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Publication number
EP1554483B1
EP1554483B1 EP03750517A EP03750517A EP1554483B1 EP 1554483 B1 EP1554483 B1 EP 1554483B1 EP 03750517 A EP03750517 A EP 03750517A EP 03750517 A EP03750517 A EP 03750517A EP 1554483 B1 EP1554483 B1 EP 1554483B1
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EP
European Patent Office
Prior art keywords
cylinder head
cooling water
cylinder
intermediate webs
water
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EP03750517A
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German (de)
French (fr)
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EP1554483A1 (en
Inventor
Franz Maassen
Ralf Gruner
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FEV Europe GmbH
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FEV Motorentechnik GmbH and Co KG
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    • 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
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • a cylinder head for a reciprocating internal combustion engine in which the areas enclosed by a flame deck and a top deck cooling water areas of the cylinder head divided across an intermediate wall leading into a lower, bounded by the flame deck cooling water area and into an upper bounded by the upper deck cooling water area is, wherein the lower and the upper cooling water leading region should have no cross-connections for a cooling water exchange between the lower and the upper region so as to be able to perform separate cooling water flows over the cylinder head.
  • the manufacture of such a cylinder head presents casting problems. Due to the separate cooling water flow in the cylinder head can also occur due to temperature differences due to the lack of cross-exchange of cooling water between the hotter lower and less hot upper area adverse thermal stresses in the cylinder head.
  • the invention has for its object to provide a cylinder head, on the one hand has a high dimensional stability, on the other hand leads to a substantially uniform cooling by the passing cooling water.
  • cooling water cylinder head with the features of claim 1, with cooling water inlet and cooling water outlet for a water-cooled multi-cylinder reciprocating internal combustion engine, with one of a flame deck and a top deck enclosed cavity per cylinder of a whistle for the use of a fuel injector and at least one gas inlet channel and at least one gas outlet channel and pipes for the cylinder head bolts is interspersed, wherein the remaining free areas between fire deck and upper deck serve as cooling water ducts, and which is provided in a part of the cooling water leading areas with intermediate webs. It has been found that the arrangement of such intermediate webs is sufficient to cause the required stiffening of the cylinder head. Since the individual intermediate webs are arranged at a distance from each other, sufficiently large openings remain, which bring about a good exchange between the cooling water flowing past in the vicinity of the flame deck and the cooling water flowing past the upper deck.
  • the intermediate webs are formed flat and are aligned with their larger surface substantially parallel to the fire deck.
  • This embodiment has the advantage that the intermediate webs can be formed relatively thin-walled, but have a sufficient cross-section with sufficient extension to effect the desired strength and thus the desired stiffening. This also ensures that the flow resistance can be kept low.
  • Another advantage is that the intermediate webs, when they are connected in the region of the gas outlet and the gas inlet ducts, the cooling surface for the Gas outlet passages increase or cause a small amount of heat transfer from the gas outlet channels to the gas inlet channels.
  • the leading edge and / or the trailing edge of at least a portion of the intermediate webs by a corresponding shaping at the same time a guiding function to more thermally higher loaded areas, especially on the flame deck, more with cooling water to flow.
  • FIG. 1 A very schematically illustrated cross-section through a cylinder head 1 for a multi-cylinder piston internal combustion engine for the diesel process essentially comprises a flame deck 2 and an upper deck 3, which enclose a cavity which has an unspecified Cooling water inlet and with a not specified cooling water drain is in communication and flows through the cooling water.
  • the flame deck 2 closes an only indicated cylinder block ZB with the cylinders Z on the top.
  • the cavity is penetrated in each case in the cylinder areas of at least one gas inlet channel 4 and at least one gas outlet channel 5 and a pipe 6 for a fuel injector and pipes 7 for the cylinder head bolts.
  • the cylinder head for a working according to the Otto method piston internal combustion engine has a similar structure.
  • the remaining between the flame deck 2 and the upper deck 3 areas 8.1, 8.2, 8.3, 8.4 and 8.5 serve as cooling water ducts, which can be traversed longitudinally or transversely depending on the connection with the cooling water inlet and the cooling water drain.
  • each intermediate webs 9 are arranged in a part of the water-carrying areas, the surface of which for clarity in Fig. 2 as well as in Fig. 3 are highlighted by a cross-hatching.
  • the intermediate webs 9 extend approximately parallel to the flame deck 2 in the embodiment.
  • the intermediate webs 9 each extend between the gas inlet ducts 4 and the gas outlet ducts 5 and thus stiffen the region immediately above the cylinders Z indicated by a dot-dash line.
  • Fig. 3 is in a cut accordingly Fig. 2 another embodiment shown, are provided in the intermediate webs 9 respectively in the intermediate regions between two adjacent cylinders Z.
  • each of the leading edges 11 and / or the trailing edges 12 of the intermediate webs 9 can be designed so that they - related to the flow direction - for the cooling water perform a guiding function, so to targeted thermal high-pressure areas of the flame deck targeted guidance of the cooling water and / or a targeted replacement of cooling water between near the flame cover areas and near the top areas.
  • Fig. 4 is another example of the design of the cooling water leading areas shown in conjunction with intermediate webs.
  • stiffening ribs 10 are provided, which run in the plane of the intermediate webs 9 at least over a part of the walls bounding the cavity and define openings 13 between adjacent intermediate webs 9. It is expedient in this case if the stiffening ribs 10 merge into the intermediate webs.
  • the stiffening ribs 10 delimiting the apertures 13 form the walls delimiting the cavity, for example the gas inlet channels and the gas outlet channels , a substantial stiffening.
  • Fig. 5 is gem.
  • Fig. 3 the principle of a longitudinal flow of the cooling water through the cooling water-carrying areas 8 indicated.
  • the arrow L E shows that the cooling water exits at the opposite end side again, so that the cylinder head is flowed through the length.
  • the intermediate webs are flowed through on their upper deck 3 side facing, in each case above the free space between two successive intermediate webs, a cooling water exchange between the fall deck side and the upper deck side takes place.
  • Fig. 6 is also gem.
  • Fig. 3 the principle of the cross-flow of the cooling water through the cooling water-carrying area 8 indicated.
  • the arrows Q E indicate that on the side of the gas outlet channels 5 from a longitudinal channel 14 as an inlet, which may be integrated in the cylinder head or the engine block, cooling water transversely to the longitudinal direction of the cylinder head 1 in the cooling water-carrying areas 8, each associated with a cylinder 7 , entry.
  • the arrows Q E indicate this only schematically. The exact position with respect to the respective cylinder Z depends on the respective structural conditions, in particular on the design of the gas outlet channels 5 and corresponding to the gas inlet channels 4.
  • a collecting channel 15 is accordingly provided as an outlet, in which from the individual, each assigned to a cylinder areas, the cooling water exits. This is indicated schematically by the arrows Q A. Again, the actual position depends on the design conditions.

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  • 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)
  • Details Of Reciprocating Pumps (AREA)

Abstract

A cylinder head for a water-cooled, multi-cylinder piston internal combustion engine comprises a lower wall and an upper wall enclosing a cavity. A well extends into the cavity for receiving a fuel injector and/or an ignition device. An intake port and/or an exhaust port extends through the cavity. A cooling-water carrying region comprises areas of the cavity surrounding the well, intake port, and exhaust port. Portions of the cooling-water carrying region are provided with an intermediate web for reinforcing the cylinder head.

Description

Bei der Weiterentwicklung und Leistungssteigerung von Kolbenbrennkraftmaschinen, die nach dem Otto- oder Dieselprinzip arbeiten, führt der Wunsch nach Gewichtseinsparung zum Einsatz von Aluminiumwerkstoffen und die Leistungssteigerung zu einer Erhöhung der Zylinderinnendrücke. Die Erhöhung der Zylinderinnendrücke führt zu einer spürbaren mechanischen Beanspruchung, insbesondere einer wechselnden Biegebeanspruchung des die Brennräume abschließenden Zylinderkopfes, mit der Gefahr, daß im Zylinderkopf Anrisse entstehen können.In the further development and performance enhancement of reciprocating internal combustion engines that operate on the Otto or Diesel principle, the desire for weight savings on the use of aluminum materials and the increase in performance leads to an increase in the internal cylinder pressures. The increase in the internal cylinder pressures leads to a noticeable mechanical stress, in particular a changing bending stress of the cylinder head final cylinder combustion, with the risk that cracks can occur in the cylinder head.

Aus DE-C-42 22 801 ist ein Zylinderkopf für eine Kolbenbrennkraftmaschine bekannt, bei der die von einem Flammdeck und einem Oberdeck umschlossenen Kühlwasser führenden Bereiche des Zylinderkopfes durchgehend über eine Zwischenwand in einen unteren, durch das Flammdeck begrenzten Kühlwasser führenden Bereich und in einen oberen durch das Oberdeck begrenzten Kühlwasser führenden Bereich unterteilt ist, wobei der untere und der obere Kühlwasser führende Bereich keine Querverbindungen für einen Kühlwasseraustausch zwischen dem unteren und dem oberen Bereich aufweisen sollen, um so getrennte Kühlwasserströme über den Zylinderkopf führen zu können. Hierdurch ergibt sich zwar eine Versteifung des Zylinderkopfes in bezug auf die vorstehend erwähnten Biegebeanspruchungen durch die erhöhten Zylinderinnendrücke. Die Herstellung eines derartigen Zylinderkopfes bietet jedoch gießtechnische Probleme. Durch die getrennte Kühlwasserführung im Zylinderkopf können außerdem aufgrund von Temperaturdifferenzen wegen des mangelnden Queraustausches von Kühlwasser zwischen dem heißeren unteren und dem weniger heißen oberen Bereich nachteilige Wärmespannungen im Zylinderkopf auftreten.Out DE-C-42 22 801 a cylinder head for a reciprocating internal combustion engine is known, in which the areas enclosed by a flame deck and a top deck cooling water areas of the cylinder head divided across an intermediate wall leading into a lower, bounded by the flame deck cooling water area and into an upper bounded by the upper deck cooling water area is, wherein the lower and the upper cooling water leading region should have no cross-connections for a cooling water exchange between the lower and the upper region so as to be able to perform separate cooling water flows over the cylinder head. Although this results in a stiffening of the cylinder head with respect to the above-mentioned bending stresses by the increased cylinder internal pressures. However, the manufacture of such a cylinder head presents casting problems. Due to the separate cooling water flow in the cylinder head can also occur due to temperature differences due to the lack of cross-exchange of cooling water between the hotter lower and less hot upper area adverse thermal stresses in the cylinder head.

Aus der US 4,889,080 geht ein Zylinderkopf hervor, bei dem zwischen einem Oberdeck und einem Flammdeck eine Zwischenwand horizontal und vertikal verläuft. Im vertikal verlaufenden Abschnitt der Zwischenwand weist diese Durchgangsbohrungen auf, über die eine Swirl-Anströmung eines Einspritzdomes ausgebildet wird.From the US 4,889,080 goes out a cylinder head, in which between an upper deck and a flame deck, an intermediate wall horizontally and vertically. In the vertically extending portion of the intermediate wall, these through-holes, via which a swirl flow of an injection dome is formed.

Der Erfindung liegt die Aufgabe zugrunde, einen Zylinderkopf zu schaffen, der zum einen eine hohe Formsteifigkeit aufweist, zum anderen zu einer im wesentlichen gleichmäßigen Kühlung durch das hindurchgeleitete Kühlwasser führt.The invention has for its object to provide a cylinder head, on the one hand has a high dimensional stability, on the other hand leads to a substantially uniform cooling by the passing cooling water.

Diese Aufgabe wird erfindungsgemäß gelöst mit einem von Kühlwasser längs oder quer durchströmten Zylinderkopf mit den Merkmalen des Anspruchs 1, mit Kühlwasserzulauf und Kühlwässerablauf für eine wassergekühlte Mehrzylinder-Kolbenbrennkraftmaschinen, mit einem von einem Flammdeck und einem Oberdeck umschlossenen Hohlraum, der je Zylinder von einer Pfeife für den Einsatz eines Kraftstoffinjektors und jeweils wenigstens einem Gaseinlaßkanal und wenigstens einem Gasauslaßkanal sowie Pfeifen für die Zylinderkopfschrauben durchsetzt ist, wobei die freibleibenden Bereiche zwischen Flammdeck und Oberdeck als Kühlwasserführungen dienen, und der in einem Teil der Kühlwasser führenden Bereiche mit Zwischenstegen versehen ist. Es hat sich gezeigt, daß die Anordnung derartiger Zwischenstege ausreicht, um die erforderliche Versteifung des Zylinderkopfes zu bewirken. Da die einzelnen Zwischenstege mit Abstand zueinander angeordnet sind, verbleiben ausreichend große Öffnungen, die einen guten Austausch zwischen dem in der Nähe des Flammdecks vorbeiströmenden Kühlwasser und dem am Oberdeck vorbeiströmenden Kühlwasser bewirken.This object is achieved with a longitudinally or transversely flowed through by cooling water cylinder head with the features of claim 1, with cooling water inlet and cooling water outlet for a water-cooled multi-cylinder reciprocating internal combustion engine, with one of a flame deck and a top deck enclosed cavity per cylinder of a whistle for the use of a fuel injector and at least one gas inlet channel and at least one gas outlet channel and pipes for the cylinder head bolts is interspersed, wherein the remaining free areas between fire deck and upper deck serve as cooling water ducts, and which is provided in a part of the cooling water leading areas with intermediate webs. It has been found that the arrangement of such intermediate webs is sufficient to cause the required stiffening of the cylinder head. Since the individual intermediate webs are arranged at a distance from each other, sufficiently large openings remain, which bring about a good exchange between the cooling water flowing past in the vicinity of the flame deck and the cooling water flowing past the upper deck.

In Ausgestaltung der Erfindung ist vorgesehen, daß die Zwischenstege flächig ausgebildet sind und mit ihrer größeren Fläche im wesentlichen parallel zum Flammdeck ausgerichtet sind. Diese Ausgestaltung hat den Vorteil, daß die Zwischenstege verhältnismäßig dünnwandig ausgebildet werden können, jedoch bei ausreichender Erstreckung einen genügenden Querschnitt aufweisen, um die gewünschte Festigkeit und damit die gewünschte Versteifung zu bewirken. Damit ist auch gewährleistet, daß der Strömungswiderstand gering gehalten werden kann. Ein weiterer Vorteil besteht darin, daß die Zwischenstege dann, wenn sie im Bereich der Gasauslaßkanäle und der Gaseinlaßkanäle angebunden sind, die Kühlfläche für die Gasauslaßkanäle vergrößern bzw. in geringem Maße eine Wärmeübertragung von den Gasauslaßkanälen auf die Gaseinlaßkanäle bewirken. In bezug auf die Strömungsrichtung des Kühlwassers im Zylinderkopf erfüllt je nach der Positionierung der Zwischenstege die Vorderkante und/oder die Hinterkante wenigstens eines Teils der Zwischenstege durch eine entsprechende Formgebung zugleich eine Leitfunktion, um damit thermisch höher belastete Bereiche, insbesondere am Flammdeck, stärker mit Kühlwasser anzuströmen.In an embodiment of the invention, it is provided that the intermediate webs are formed flat and are aligned with their larger surface substantially parallel to the fire deck. This embodiment has the advantage that the intermediate webs can be formed relatively thin-walled, but have a sufficient cross-section with sufficient extension to effect the desired strength and thus the desired stiffening. This also ensures that the flow resistance can be kept low. Another advantage is that the intermediate webs, when they are connected in the region of the gas outlet and the gas inlet ducts, the cooling surface for the Gas outlet passages increase or cause a small amount of heat transfer from the gas outlet channels to the gas inlet channels. With respect to the flow direction of the cooling water in the cylinder head, depending on the positioning of the intermediate webs, the leading edge and / or the trailing edge of at least a portion of the intermediate webs by a corresponding shaping at the same time a guiding function to more thermally higher loaded areas, especially on the flame deck, more with cooling water to flow.

Die Erfindung wird anhand schematischer Zeichnungen näher erläutert. Es zeigen:

Fig. 1
einen vertikalen Querschnitt durch einen Zylin- derkopf gem. der Linie I-I in Fig. 2,
Fig. 2
einen Horizontalschnitt durch ein Teilstück eines Zylinderkopfes gem. der Linie II-II in Fig. 1,
Fig. 3
einen Horizontalschnitt entsprechend Fig. 2 mit einer anderen Anordnung für Zwischenstege,
Fig. 4
einen Horizontalschnitt gem. Fig. 2 mit einem weiteren Gestaltungsbeispiel für die Zwischenste- ge,
Fig. 5
am Beispiel der Ausführungsform gem. Fig. 3 das Prinzip einer Längsdurchströmung,
Fig. 6
am Beispiel der Ausführungsform gem. Fig. 3 das Prinzip einer Querdurchströmung.
The invention will be explained in more detail with reference to schematic drawings. Show it:
Fig. 1
a vertical cross section through a cylinder head gem. the line II in Fig. 2 .
Fig. 2
a horizontal section through a portion of a cylinder head gem. the line II-II in Fig. 1 .
Fig. 3
a horizontal section accordingly Fig. 2 with another arrangement for intermediate webs,
Fig. 4
a horizontal section acc. Fig. 2 with another design example for the intermediate levels,
Fig. 5
the example of the embodiment according to. Fig. 3 the principle of a longitudinal flow,
Fig. 6
the example of the embodiment according to. Fig. 3 the principle of a cross-flow.

Der in Fig. 1 äußerst schematisch dargestellte Querschnitt durch einen Zylinderkopf 1 für eine mehrzylindrige Kolbenbrennkraftmaschine für das Dieselverfahren weist im wesentlichen ein Flammdeck 2 und ein Oberdeck 3 auf, die einen Hohlraum umschließen, der mit einem nicht näher bezeichneten Kühlwasserzulauf und mit einem nicht näher bezeichneten Kühlwasserablauf in Verbindung steht und der von Kühlwasser durchströmt wird. Das Flammdeck 2 schließt einen nur angedeuteten Zylinderblock ZB mit den Zylindern Z auf der Oberseite ab. Der Hohlraum ist jeweils in den Zylinderbereichen durchsetzt von wenigstens einem Gaseinlaßkanal 4 und wenigstens einem Gasauslaßkanal 5 sowie einer Pfeife 6 für einen Kraftstoffinjektor sowie Pfeifen 7 für die Zylinderkopfschrauben. Der Zylinderkopf für eine nach dem Otto-Verfahren arbeitende Kolbenbrennkraftmaschine ist ähnlich aufgebaut.The in Fig. 1 A very schematically illustrated cross-section through a cylinder head 1 for a multi-cylinder piston internal combustion engine for the diesel process essentially comprises a flame deck 2 and an upper deck 3, which enclose a cavity which has an unspecified Cooling water inlet and with a not specified cooling water drain is in communication and flows through the cooling water. The flame deck 2 closes an only indicated cylinder block ZB with the cylinders Z on the top. The cavity is penetrated in each case in the cylinder areas of at least one gas inlet channel 4 and at least one gas outlet channel 5 and a pipe 6 for a fuel injector and pipes 7 for the cylinder head bolts. The cylinder head for a working according to the Otto method piston internal combustion engine has a similar structure.

Die zwischen dem Flammdeck 2 und dem Oberdeck 3 freibleibenden Bereiche 8.1, 8.2, 8.3, 8.4 und 8.5 dienen als Kühlwasserführungen, die je nach Verbindung mit dem Kühlwasserzulauf und dem Kühlwasserablauf längs oder quer durchströmt werden können.The remaining between the flame deck 2 and the upper deck 3 areas 8.1, 8.2, 8.3, 8.4 and 8.5 serve as cooling water ducts, which can be traversed longitudinally or transversely depending on the connection with the cooling water inlet and the cooling water drain.

Wie die Aufsicht auf den Schnitt gem. Fig. 2 erkennen läßt, sind in einem Teil der wasserführenden Bereiche jeweils Zwischenstege 9 angeordnet, deren Oberfläche zur Verdeutlichung in Fig. 2 ebenso wie in Fig. 3 durch eine Kreuzschraffur hervorgehoben sind. Die Zwischenstege 9 verlaufen in etwa parallel zum Flammdeck 2. Bei dem Ausführungsbeispiel gem. Fig. 2 erstrecken sich die Zwischenstege 9 jeweils zwischen den Gaseinlaßkanälen 4 und den Gasauslaßkanälen 5 und versteifen so den Bereich unmittelbar über den durch eine Strichpunktlinie angedeuteten Zylindern Z.As the supervision on the cut gem. Fig. 2 can be seen, each intermediate webs 9 are arranged in a part of the water-carrying areas, the surface of which for clarity in Fig. 2 as well as in Fig. 3 are highlighted by a cross-hatching. The intermediate webs 9 extend approximately parallel to the flame deck 2 in the embodiment. Fig. 2 The intermediate webs 9 each extend between the gas inlet ducts 4 and the gas outlet ducts 5 and thus stiffen the region immediately above the cylinders Z indicated by a dot-dash line.

In Fig. 3 ist in einem Schnitt entsprechend Fig. 2 eine andere Ausführungsform dargestellt, bei der Zwischenstege 9 jeweils in den Zwischenbereichen zwischen zwei benachbarten Zylindern Z vorgesehen sind.In Fig. 3 is in a cut accordingly Fig. 2 another embodiment shown, are provided in the intermediate webs 9 respectively in the intermediate regions between two adjacent cylinders Z.

Je nach Lage der Zwischenstege können dann jeweils die Vorderkanten 11 und/oder die Hinterkanten 12 der Zwischenstege 9 so gestaltet werden, daß sie - bezogen auf die Strömungsrichtung - für das Kühlwasser eine Leitfunktion erfüllen, damit zu thermisch hoch belasteten Bereichen des Flammdecks eine gezielte Führung des Kühlwassers und/oder ein gezielter Austausch von Kühlwasser zwischen flammdecknahen Bereichen und oberdecknahen Bereichen bewirkt wird.Depending on the position of the intermediate webs then each of the leading edges 11 and / or the trailing edges 12 of the intermediate webs 9 can be designed so that they - related to the flow direction - for the cooling water perform a guiding function, so to targeted thermal high-pressure areas of the flame deck targeted guidance of the cooling water and / or a targeted replacement of cooling water between near the flame cover areas and near the top areas.

In Fig. 4 ist ein weiteres Gestaltungsbeispiel für die Ausbildung der Kühlwasser führenden Bereiche in Verbindung mit Zwischenstegen dargestellt. Bei diesem Gestaltungsbeispiel sind Versteifungsrippen 10 vorgesehen, die in der Ebene der Zwischenstege 9 zumindest über einen Teil der den Hohlraum begrenzenden Wandungen verlaufen und Durchbrechungen 13 zwischen benachbarten Zwischenstegen 9 begrenzen. Zweckmäßig ist es hierbei, wenn die Versteifungsrippen 10 in die Zwischenstege übergehen. Da der Zylinderkopf einer Mehrzylinderbrennkraftmaschine sehr komplexen mechanischen Beanspruchungen ausgesetzt ist, d. h. neben Zug/Druckbeanspruchungen auch Biege/Wechselbeanspruchungen in der Motorquerachse und in der Motorlängsachse, bilden die die Durchbrechungen 13 begrenzenden Versteifungsrippen 10 an den den Hohlraum begrenzenden Wandungen, beispielsweise der Gaseinlaßkanäle und der Gasauslaßkanäle, eine wesentliche Versteifung.In Fig. 4 is another example of the design of the cooling water leading areas shown in conjunction with intermediate webs. In this embodiment, stiffening ribs 10 are provided, which run in the plane of the intermediate webs 9 at least over a part of the walls bounding the cavity and define openings 13 between adjacent intermediate webs 9. It is expedient in this case if the stiffening ribs 10 merge into the intermediate webs. Since the cylinder head of a multi-cylinder internal combustion engine is subjected to very complex mechanical stresses, ie in addition to train / compressive stresses also bending / alternating stresses in the motor transverse axis and in the motor longitudinal axis, the stiffening ribs 10 delimiting the apertures 13 form the walls delimiting the cavity, for example the gas inlet channels and the gas outlet channels , a substantial stiffening.

In Fig. 5 ist für das Ausführungsbeispiel gem. Fig. 3 das Prinzip einer Längsdurchströmung des Kühlwassers durch die kühlwasserführenden Bereiche 8 angedeutet.In Fig. 5 is gem. Fig. 3 the principle of a longitudinal flow of the cooling water through the cooling water-carrying areas 8 indicated.

Der Pfeil LE zeigt, daß das Kühlwasser an der entgegengesetzten Stirnseite wieder austritt, so daß der Zylinderkopf der Länge nach durchströmt wird. Die Zwischenstege werden auf ihrer dem Oberdeck 3 zugekehrten Seite durchströmt, wobei jeweils über dem Freiraum zwischen zwei hintereinanderliegenden Zwischenstegen ein Kühlwasseraustausch zwischen der Falldeckseite und der Oberdeckseite stattfindet.The arrow L E shows that the cooling water exits at the opposite end side again, so that the cylinder head is flowed through the length. The intermediate webs are flowed through on their upper deck 3 side facing, in each case above the free space between two successive intermediate webs, a cooling water exchange between the fall deck side and the upper deck side takes place.

In Fig. 6 ist ebenfalls für das Ausführungsbeispiel gem. Fig. 3 das Prinzip der Querdurchströmung des Kühlwassers durch die kühlwasserführenden Bereich 8 angedeutet.In Fig. 6 is also gem. Fig. 3 the principle of the cross-flow of the cooling water through the cooling water-carrying area 8 indicated.

Die Pfeile QE lassen erkennen, daß auf der Seite der Gasauslaßkanäle 5 aus einem Längskanal 14 als Zulauf, der in den Zylinderkopf oder den Motorblock integriert sein kann, Kühlwasser quer zur Längsrichtung des Zylinderkopfes 1 in die kühlwasserführenden Bereiche 8, jeweils einem Zylinder 7 zugeordnet, eintritt. Die Pfeile QE deuten dies nur schematisch an. Die genaue Lage in bezug auf den jeweiligen Zylinder Z richtet sich nach den jeweiligen konstruktiven Gegebenheiten, insbesondere nach der Gestaltung der Gasauslaßkanäle 5 und entsprechend der Gaseinlaßkanäle 4.The arrows Q E indicate that on the side of the gas outlet channels 5 from a longitudinal channel 14 as an inlet, which may be integrated in the cylinder head or the engine block, cooling water transversely to the longitudinal direction of the cylinder head 1 in the cooling water-carrying areas 8, each associated with a cylinder 7 , entry. The arrows Q E indicate this only schematically. The exact position with respect to the respective cylinder Z depends on the respective structural conditions, in particular on the design of the gas outlet channels 5 and corresponding to the gas inlet channels 4.

Auf der Seite der Gaseinlaßkanäle 4 ist entsprechend ein Sammelkanal 15 als Ablauf vorgesehen, in den aus den einzelnen, jeweils einem Zylinder zugeordneten Bereichen das Kühlwasser austritt. Dies ist durch die Pfeile QA schematisch angedeutet. Auch hier richtet sich die tatsächliche Position nach den konstruktiven Gegebenheiten.On the side of the gas inlet channels 4, a collecting channel 15 is accordingly provided as an outlet, in which from the individual, each assigned to a cylinder areas, the cooling water exits. This is indicated schematically by the arrows Q A. Again, the actual position depends on the design conditions.

Auch bei der Querströmung kann über dem Freiraum zwischen jeweils benachbarten Stegen ein Kühlwasseraustausch stattfinden. Da zwischen den den einzelnen Zylindern zugeordneten Bereichen keine sogenannten Schottwände im Zylinderkopf vorhanden sind, kann sich die Querströmung frei einstellen, so daß in Teilbereichen in Längsrichtung weisende Strömungskomponenten vorhanden sein können.Even with the cross flow, a cooling water exchange can take place over the free space between adjacent webs. Since there are no so-called bulkhead walls in the cylinder head between the areas assigned to the individual cylinders, the transverse flow can be set freely, so that flow components pointing in partial areas can be present in the longitudinal direction.

Die vorstehend beschriebene Längsdurchströmung und die Querdurchströmung kann in gleicher Weise auch bei den Ausführungsformen gem. Fig. 2 und Fig. 4 konzipiert werden.The longitudinal flow described above and the transverse flow can in the same way in the embodiments according to. Fig. 2 and Fig. 4 be conceived.

Claims (3)

  1. A cylinder head, through which cooling water flows in a longitudinal or transverse manner, for a water-cooled multi-cylinder piston-type internal combustion engine, having a cavity, covering the cylinders and enclosed by a flame deck (2) and an upper deck (3), through which there pass pipes for the insertion of a fuel injector and/or a cylinder device and/or for the cylinder-head screws for each cylinder (Z) and through which there pass in each case at least one gas inlet channel (4) and at least one gas outlet channel (5), wherein the unoccupied regions (8) between the flame deck (2) and the upper deck (3) serve as cooling-water guides, and which is provided with intermediate webs (9) in some of the regions guiding cooling water, wherein the intermediate webs (9) are laminar and their larger surface is directed substantially parallel to the flame deck (2) and - related to a flow direction (10) of the cooling water - the front edges (11) and/or the rear edges (12) of at least some of the intermediate webs (9) are fashioned as a flow guiding element.
  2. A cylinder head according to any one of claims 1 to 3, characterised in that reinforcing ribs (10) are provided, which run in the plane of the intermediate webs (9) over at least part of the walls bounding the cavity.
  3. A cylinder head according to claim 4, characterised in that the reinforcing ribs (10) transition into the intermediate webs (9).
EP03750517A 2002-10-25 2003-09-11 Cylinder head for a water-cooled internal combustion piston engine having inner reinforcement Expired - Lifetime EP1554483B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20216452U DE20216452U1 (en) 2002-10-25 2002-10-25 Cylinder head for a water-cooled piston internal combustion engine with internal reinforcement
DE20216452U 2002-10-25
PCT/EP2003/010072 WO2004038206A1 (en) 2002-10-25 2003-09-11 Cylinder head for a water-cooled internal combustion piston engine having inner reinforcement

Publications (2)

Publication Number Publication Date
EP1554483A1 EP1554483A1 (en) 2005-07-20
EP1554483B1 true EP1554483B1 (en) 2011-04-06

Family

ID=7976319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750517A Expired - Lifetime EP1554483B1 (en) 2002-10-25 2003-09-11 Cylinder head for a water-cooled internal combustion piston engine having inner reinforcement

Country Status (7)

Country Link
US (1) US7100545B2 (en)
EP (1) EP1554483B1 (en)
CN (1) CN1697921A (en)
AT (1) ATE504730T1 (en)
AU (1) AU2003270170A1 (en)
DE (2) DE20216452U1 (en)
WO (1) WO2004038206A1 (en)

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JP6973093B2 (en) * 2018-01-10 2021-11-24 トヨタ自動車株式会社 Internal combustion engine
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DE102022116178A1 (en) 2022-06-29 2022-11-24 FEV Europe GmbH lightweight cylinder head
DE102023001162A1 (en) 2022-06-29 2024-01-04 FEV Europe GmbH Lightweight cylinder head

Also Published As

Publication number Publication date
WO2004038206A1 (en) 2004-05-06
CN1697921A (en) 2005-11-16
US7100545B2 (en) 2006-09-05
DE50313604D1 (en) 2011-05-19
EP1554483A1 (en) 2005-07-20
DE20216452U1 (en) 2002-12-19
ATE504730T1 (en) 2011-04-15
US20050229875A1 (en) 2005-10-20
AU2003270170A1 (en) 2004-05-13

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