EP0244735A2 - Cylinder head for a water-cooled internal-combustion engine - Google Patents

Cylinder head for a water-cooled internal-combustion engine Download PDF

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Publication number
EP0244735A2
EP0244735A2 EP87106132A EP87106132A EP0244735A2 EP 0244735 A2 EP0244735 A2 EP 0244735A2 EP 87106132 A EP87106132 A EP 87106132A EP 87106132 A EP87106132 A EP 87106132A EP 0244735 A2 EP0244735 A2 EP 0244735A2
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EP
European Patent Office
Prior art keywords
cylinder head
cooling jacket
coolant
outlet opening
end region
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
EP87106132A
Other languages
German (de)
French (fr)
Other versions
EP0244735B1 (en
EP0244735A3 (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.)
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Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0244735A2 publication Critical patent/EP0244735A2/en
Publication of EP0244735A3 publication Critical patent/EP0244735A3/en
Application granted granted Critical
Publication of EP0244735B1 publication Critical patent/EP0244735B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • 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
    • 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
    • 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
    • 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
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

Definitions

  • the invention relates to a cylinder head of a type according to the features of the preamble of the claim.
  • the object of the invention is to both exclude local overheating in a cylinder head of the generic type and to achieve a low construction cost.
  • This object is achieved by the invention with the characterizing features of patent claim 1.
  • the coolant flow in the cooling jacket of the cylinder head is changed very slightly in this way with and without coolant discharge to the heating device.
  • the volume of coolant flowing out through the pipeline then corresponds approximately to that which flows through the smaller overflow openings in the flow direction before the confluence with the pipeline.
  • the main flow of the coolant from the second to the first end region is thus not influenced with and without coolant discharge to the heating device.
  • the largely non-contact arrangement of the pipeline to the cylinder head walls precludes overheating of the coolant in the pipeline when the heating device is switched off even if the component temperature of the cylinder head is above the boiling temperature of the at high ambient temperature and / or high engine load Coolant.
  • the features of claim 2 enable a particularly cost-effective design with a pipe that is smoothly cut to length at both ends.
  • the features of claim 3 also exclude any additional component expenditure for the connection of a hose line to the heating device.
  • the main components of a liquid-cooled internal combustion engine 1 consist of a cylinder crankcase 2 and a cylinder head 3, each of which contains a cooling jacket 4 and 5, which are shown in FIG. 1 by the arrows corresponding to the coolant flow direction.
  • a plurality of combustion chamber wall sections 6 and in the cylinder crankcase 2 each associated working cylinder 7 are formed in a row.
  • a cooler supply line 11 and a short-circuit line 12 to a cooler 13 and / or immediately to a thermostat 14 in a cooler return line 15 and then to one or each coolant outlet opening 9 and 10 connected to a coolant pump 16 on the cylinder crankcase 2.
  • the output of the pump 16 is connected directly to the cooling jacket 4 of the cylinder crankcase 2, whereby the main cooling circuit is closed.
  • a pipe 18 extends from the second end region 17 thereof for the connection of a heating flow line 19 to a vehicle interior heating device 20 and via a heating return line 21 back to the coolant pump 16.
  • This pipe 18 has a circular cross section, is cut to length at both ends and ends in the cylinder head cooling jacket 5 in an exposed inlet end opening 22. This lies at an optionally specified distance from the second end region 17 to close to the first end region 8 of the cylinder head 3, depending on the coolant flow conditions given in the cooling jacket 5 of the cylinder head 3.
  • the pipeline 18 is fastened in a coolant outlet opening 23 of the cylinder head 3 for the heating flow line 19 and in inner bearing points 24 with small contact surfaces to the cylinder head walls 25 by shrinking, expanding and / or gluing.
  • the pipe 18 has a conventional hose connection piece 27 projecting beyond the outlet opening 23 and integrally formed with an end bead and / or annular grooves.
  • the inlet end opening 22 of the pipeline 18 exposed in the cylinder head cooling jacket 5, which is arranged at a coordinated distance from the second end region 17 of the cylinder head, ensures a function which is reliable in terms of malfunction and overheating liquid cooling, since on the one hand the flow through the cylinder head cooling jacket 5 remains largely unchanged when the heating device 20 is switched on or off, and on the other hand when the heating device is switched off the coolant in the pipeline 18 is not overheated by the component temperature of the cylinder head 3.

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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)

Abstract

The cooling jacket (5) on a cylinder head (3) for a water-cooled in-line internal combustion engine (1) contains a pipeline (18), which, without any covering, projects from a coolant outlet aperture (23) for the connection of a heating device (20) originating in the cooling jacket (5), and has a cylindrical, smoothly cut form and an inlet aperture (22) in the cooling jacket (5) at a distance from the outlet aperture (23) together with an external hose connection for a heating supply line (19).

Description

Die Erfindung bezieht sich auf einen Zylinderkopf einer Bauart gemäß den Merkmalen des Patentanspruchs-Oberbegriffes.The invention relates to a cylinder head of a type according to the features of the preamble of the claim.

Bei bekannten Zylinderköpfen dieser Bauart, beispielsweise nach DE-OS 26 31 121, ist es vielfach üblich, an Austrittsöffnungen an beiden entgegengesetzten Zylinderkopf-Endbereichen die betreffen­den Kühlmittel-Leitungen unmittelbar am Kühlmantel anzuschließen. Dadurch ergeben sich je nach Anteil des zur Heizvorrichtung entnommenen Kühlmittel-Volumenstromes unterschiedliche Strömungs- und Kühlfunktions-Verhältnisse im Kühlmantel, die zu örtlichen überhitzungen des Zylinderkopfes im strömungsberuhigten Zwischen­bereich führen können.In known cylinder heads of this type, for example according to DE-OS 26 31 121, it is common practice to connect the relevant coolant lines directly to the cooling jacket at outlet openings on both opposite cylinder head end regions. This results in different flow and cooling function ratios in the cooling jacket, depending on the proportion of the coolant volume flow removed to the heating device, which can lead to local overheating of the cylinder head in the flow-reduced intermediate region.

Durch die US-PS 28 53 063 ist es ferner bekannt, zwischen zwei alternativ an beiden Stirnenden des Zylinderkopfes wirksamen Kühlmittel-Eintrittsöffnungen im Kühlmantel ein Kühlmittel-Ver­teilerrohr anzuordnen, das die Kühlmittel-Einströmung in den Kühlmantel über die Länge des Zylinderkopfes verteilt einleitet. Austrittsöffnungen zu Kühlmittel-Leitungen außerhalb des Maschi­nen-Kühlmantels weist diese Ausbildung des Zylinderkopfes nicht auf. Darüberhinaus ist die Anordnung des Verteilerohres im Inne­ren des Zylinderkopfes aufgrund der Querschnittsform dieses Rohres nur mit hohem Kostenaufwand insbesondere durch Einlegen bereits in die Gußform zum Eingießen möglich. Auch der unregel­mäßige Querschnitt des Rohres erfordert einen hohen Fertigungs­aufwand für das Rohr selbst.From US-PS 28 53 063 it is also known to arrange a coolant distributor pipe between two alternatively effective coolant inlet openings in the cooling jacket at both ends of the cylinder head, which introduces the coolant inflow into the cooling jacket distributed over the length of the cylinder head. This design of the cylinder head does not have outlet openings to coolant lines outside the machine cooling jacket. In addition, because of the cross-sectional shape of this tube, the arrangement of the distributor tube in the interior of the cylinder head is only possible at great expense, in particular by inserting it into the casting mold for casting. The irregular cross-section of the pipe also requires a high manufacturing effort for the pipe itself.

Aufgabe der Erfindung ist es, bei einem Zylinderkopf der gattungs­gemäßen Bauart sowohl örtliche Überhitzungen auszuschließen als auch einen geringen Bauaufwand zu erreichen. Diese Aufgabe löst die Erfindung mit den kennzeichnenden Merkmalen des Patentan­spruches 1. Die Kühlmittelströmung im Kühlmantel des Zylinder­kopfes wird auf diese Weise mit und ohne Kühlmittel-Ableitung zur Heizvorrichtung äußerst geringfügig geändert. Dies gilt insbeson­dere bei üblichen Zylinderköpfen, bei denen der Übergang des Hauptanteiles der Kühlmittel-Strömung vom Zylinder- zum Zylinder­kopf-Kühlmantel im zweiten Endbereich der Zylinder-Reihe durch große Überström-Öffnungen und im übrigen Bereich durch kleinere Überström-Öffnungen erfolgt. Das durch die Rohrleitung abströmen­de Kühlmittel-Volumen entspricht dabei dann etwa demjenigen, das durch die kleineren Überström-Öffnungen in Strömungsrichtung vor der Einmündung in die Rohrleitung zuströmt. Die Hauptströ­mung des Kühlmittels vom zweiten zum ersten Endbereich wird somit mit und ohne Kühlmittel-Ableitung zur Heizvorrichtung nicht beeinflußt. Die weitestgehend berührungsfreie Anordnung der Rohrleitung zu den Zylinderkopf-Wandungen schließt eine Über­hitzung des in der Rohrleitung bei abgeschalteter Heizvorrichtung stehenden Kühlmittels auch dann aus, wenn bei hoher Umgebungs-­Temperatur und/oder hoher Motorlast die Bauteil-Temperatur des Zylinderkopfes über der Siede-Temperatur des Kühlmittels liegt.The object of the invention is to both exclude local overheating in a cylinder head of the generic type and to achieve a low construction cost. This object is achieved by the invention with the characterizing features of patent claim 1. The coolant flow in the cooling jacket of the cylinder head is changed very slightly in this way with and without coolant discharge to the heating device. This applies in particular to conventional cylinder heads, in which the transition of the main part of the coolant flow from the cylinder to the cylinder head cooling jacket takes place in the second end region of the cylinder row through large overflow openings and in the remaining region through smaller overflow openings. The volume of coolant flowing out through the pipeline then corresponds approximately to that which flows through the smaller overflow openings in the flow direction before the confluence with the pipeline. The main flow of the coolant from the second to the first end region is thus not influenced with and without coolant discharge to the heating device. The largely non-contact arrangement of the pipeline to the cylinder head walls precludes overheating of the coolant in the pipeline when the heating device is switched off even if the component temperature of the cylinder head is above the boiling temperature of the at high ambient temperature and / or high engine load Coolant.

Durch die Merkmale des Anspruches 2 wird eine besonders kosten­günstige Ausbildung mit einer an beiden Enden glatt abgelängten Rohrleitung ermöglicht. Die Merkmale des Anspruches 3 schließen darüberhinaus auch noch jeglichen zusätzlichen Bauteilaufwand für den Anschluß einer Schlauchleitung zur Heizvorrichtung aus.The features of claim 2 enable a particularly cost-effective design with a pipe that is smoothly cut to length at both ends. The features of claim 3 also exclude any additional component expenditure for the connection of a hose line to the heating device.

In der Zeichnung ist die Erfindung anhand eines Ausführungsbei­spieles dargestellt. Es zeigen:

  • Fig. 1 eine flüssigkeits-gekühlte Brennkraftsmaschine mit einem erfindungsgemäßen Zylinderkopf und den dazugehörigen Kühlkreis in schematischer Darstellung,
  • Fig. 2 den Zylinderkopf der Maschine nach Fig. 1 im Teil-Längsschnitt nach der Linie II-II Fig. 3 und
  • Fig. 3 einen Querschnitt nach der Linie III-III in Fig. 2.
In the drawing, the invention is illustrated using an exemplary embodiment. Show it:
  • 1 shows a liquid-cooled internal combustion engine with a cylinder head according to the invention and the associated cooling circuit in a schematic representation,
  • Fig. 2 shows the cylinder head of the machine of Fig. 1 in partial longitudinal section along the line II-II Fig. 3 and
  • 3 shows a cross section along the line III-III in FIG. 2.

Eine flüssigkeits-gekühlte Brennkraftmaschine 1 besteht in ihren Haupt-Bauteilen aus einem Zylinder-Kurbelgehäuse 2 und einem Zylinderkopf 3, die je einen Kühlmantel 4 und 5 enthalten, die in Fig. 1 durch der Kühlmittel-Strömungsrichtung entsprechende Pfeile dargestellt sind. Im Zylinderkopf 3 sind mehrere Brennraum-­Wandabschnitte 6 und im Zylinder-Kurbelgehäuse 2 jeweils zugeord­nete Arbeits-Zylinder 7 in einer Reihe ausgeformt. An einem ersten Endbereich 8 des Zylinderkopfes 3 sind an einer oder je einer Kühlmittel-Austrittsöffnung 9 und 10 je eine Kühler-Vorlaufleitung 11 und Kurzschlußleitung 12 zu einem Kühler 13 bzw. diesen umgehend zu einem Thermostat 14 in einer Kühler-Rücklaufleitung 15 und daran anschließend zu einer Kühlmittel-Pumpe 16 am Zylin­der-Kurbelgehäuse 2 angeschlossen. Der Ausgang der Pumpe 16 ist unmittelbar an den Kühlmantel 4 des Zylinder-Kurbelgehäuses 2 angeschlossen, wodurch der Haupt-Kühlkreis geschlossen ist.The main components of a liquid-cooled internal combustion engine 1 consist of a cylinder crankcase 2 and a cylinder head 3, each of which contains a cooling jacket 4 and 5, which are shown in FIG. 1 by the arrows corresponding to the coolant flow direction. In the cylinder head 3, a plurality of combustion chamber wall sections 6 and in the cylinder crankcase 2 each associated working cylinder 7 are formed in a row. At a first end region 8 of the cylinder head 3, a cooler supply line 11 and a short-circuit line 12 to a cooler 13 and / or immediately to a thermostat 14 in a cooler return line 15 and then to one or each coolant outlet opening 9 and 10 connected to a coolant pump 16 on the cylinder crankcase 2. The output of the pump 16 is connected directly to the cooling jacket 4 of the cylinder crankcase 2, whereby the main cooling circuit is closed.

In den Kühlmantel 5 des Zylinderkopfes 3 ragt von dessen zweitem Endbereich 17 ausgehend eine Rohrleitung 18 für den Anschluß einer Heizungs-Vorlaufleitung 19 zu einer Fahrzeug-Innenraum-Heiz­vorrichtung 20 und über eine Heizungs-Rücklaufleitung 21 zurück zur Kühlmittel-Pumpe 16. Diese Rohrleitung 18 weist einen Kreis­querschnitt auf, ist an beiden Enden glatt abgelängt und endet im Zylinderkopf-Kühlmantel 5 in einer freiliegenden Eintritts-Endöff­ nung 22. Diese liegt in wahlweise festgelegtem Abstand vom zwei­ten Endbereich 17 bis nahe zum ersten Endbereich 8 des Zylinder­kopfes 3, je nach den im Kühlmantel 5 des Zylinderkopfes 3 gegebe­nen Kühlmittel-Strömungsverhältnissen.In the cooling jacket 5 of the cylinder head 3, a pipe 18 extends from the second end region 17 thereof for the connection of a heating flow line 19 to a vehicle interior heating device 20 and via a heating return line 21 back to the coolant pump 16. This pipe 18 has a circular cross section, is cut to length at both ends and ends in the cylinder head cooling jacket 5 in an exposed inlet end opening 22. This lies at an optionally specified distance from the second end region 17 to close to the first end region 8 of the cylinder head 3, depending on the coolant flow conditions given in the cooling jacket 5 of the cylinder head 3.

Die Rohrleitung 18 ist in einer Kühlmittel-Austrittsöffnung 23 des Zylinderkopfes 3 für die Heizungs-Vorlaufleitung 19 und in inneren Lagerstellen 24 mit kleinen Berührungsflächen zu den Zylinder­kopf-Wandungen 25 durch Einschrumpfen, Aufweiten und/oder Kleben befestigt. Für den Anschluß eines Kühlmittel-Schlauches 26 als Heizungs-Vorlaufleitung 19 ist der Rohrleitung 18 ein über die Austrittsöffnung 23 hinausragender üblicher Schlauch-Anschluß­stutzen 27 mit Endwulst und/oder Ringrillen einstückig angeformt. Alternativ besteht auch die Möglichkeit, die Rohrleitung 18 glatt abgelängt mit der Außenbegrenzung der Austrittsöffnung 23 ab­schließen zu lassen und einen üblichen Flanschdeckel mit einem Zylinderkopf-Baulänge sparenden Winkel-Anschlußstutzen an der Austrittsöffnung 23 zu befestigen.The pipeline 18 is fastened in a coolant outlet opening 23 of the cylinder head 3 for the heating flow line 19 and in inner bearing points 24 with small contact surfaces to the cylinder head walls 25 by shrinking, expanding and / or gluing. For the connection of a coolant hose 26 as a heating flow line 19, the pipe 18 has a conventional hose connection piece 27 projecting beyond the outlet opening 23 and integrally formed with an end bead and / or annular grooves. Alternatively, it is also possible to have the pipeline 18 cut to length with the outer boundary of the outlet opening 23 and to fasten a conventional flange cover with an angle connecting piece that saves the length of the cylinder head to the outlet opening 23.

Beim Betrieb der Brennkraftmaschine 1 mit und ohne Einschalten der Fahrzeug-Innenraum-Heizvorrichtung 20 gewährleistet die in einem abgestimmten Abstand vom zweiten Endbereich 17 des Zylinder­kopfes angeordnete Eintritts-Endöffnung 22 der im Zylinderkopf-­Kühlmantel 5 freiliegenden Rohrleitung 18 eine störungs- und überhitzungs-sichere Funktion der Flüssigkeits-Kühlung, da einer­seits die Durchströmung des Zylinderkopf-Kühlmantels 5 bei ein- oder ausgeschalteter Heizvorrichtung 20 weitgehend unverändert bleibt und andererseits bei ausgeschalteter Heizvorrichtung das in der Rohrleitung 18 stehende Kühlmittel von der Bauteil-Temperatur des Zylinderkopfes 3 nicht überhitzt wird.When the internal combustion engine 1 is operated with and without the vehicle interior heating device 20 being switched on, the inlet end opening 22 of the pipeline 18 exposed in the cylinder head cooling jacket 5, which is arranged at a coordinated distance from the second end region 17 of the cylinder head, ensures a function which is reliable in terms of malfunction and overheating liquid cooling, since on the one hand the flow through the cylinder head cooling jacket 5 remains largely unchanged when the heating device 20 is switched on or off, and on the other hand when the heating device is switched off the coolant in the pipeline 18 is not overheated by the component temperature of the cylinder head 3.

PositionslistePosition list

  • 1 Brennkraftmaschine1 internal combustion engine
  • 2 Zylinder-Kurbelgehäuse2 cylinder crankcase
  • 3 Zylinderkopf3 cylinder head
  • 4 Kühlmantel im Zylinder-Kurbelgehäuse4 Cooling jacket in the cylinder crankcase
  • 5 Kühlmantel im Zylinderkopf5 Cooling jacket in the cylinder head
  • 6 Brennraum-Wandabschnitte6 combustion chamber wall sections
  • 7 Arbeits-Zylinder7 working cylinders
  • 8 erster Endbereich8 first end area
  • 9 Kühlmittel-Austrittsöffnung9 Coolant outlet opening
  • 10 Kühlmittel-Austrittsöffnung10 Coolant outlet opening
  • 11 Kühler-Vorlaufleitung11 Radiator flow line
  • 12 Kurzschlußleitung12 short-circuit line
  • 13 Kühler13 cooler
  • 14 Thermostat14 thermostat
  • 15 Kühler-Rücklaufleitung15 Radiator return line
  • 16 Kühlmittel-Pumpe16 coolant pump
  • 17 zweiter Endbereich17 second end area
  • 18 Rohrleitung18 pipeline
  • 19 Heizungs-Vorlaufleitung19 Heating flow line
  • 21 Heizungs-Rücklaufleitung21 heating return line
  • 22 Eintritts-Endöffnung22 Entry end opening
  • 23 Kühlmittel-Austrittsöffnung23 Coolant outlet opening
  • 24 Lagerstellen24 bearings
  • 25 Zylinderkopf-Wandungen25 cylinder head walls
  • 26 Kühlmittel-Schlauch26 coolant hose
  • 27 Schlauch-Anschlußstutzen27 hose connector

Claims (3)

1. Zylinderkopf für flüssigkeits-gekühlte Brennkraftmaschinen,
mit mehreren in einer Reihe angeordneten Brennraum-Wandab­schnitten (6) für zugeordnete Arbeitszylinder (7),
mit mindestens einer an einem ersten Endbereich (8) der Reihe am Zylinderkopf (3) angeordneten Kühlmittel-Austritts­öffnung (9 und 10) aus einem Zylinderkopf-Kühlmantel (5) für eine Kühler-Vorlaufleitung (11) und für eine Kurzschlußlei­tung (12) zu einer Kühlmantel-Eintrittsöffnung (Kühlmittel-­Pumpe 16) und
mit einer weiteren, am entgegengesetzten zweiten Endbereich (17) der Reihe am Zylinderkopf (3) angeordneten Kühlmittel-­Austrittstöffnung (23) des Zylinderkopf-Kühlmantels (5) für eine Heizungs-Vorlaufleitung (19) zu einer Heizvorrichtung (20), dadurch gekennzeichnet,
daß an die Austrittsöffnung (23) für die Heizungs-Vorlauf­leitung (19) im Inneren des Kühlmantels (5) eine durch die Austrittsöffnung (23) eingebaute Rohrleitung (18) anschließt, die im Kühlmantel (5) - abgesehen von Lagerstellen (24) - freiliegend im Abstand vom zweiten Endbereich (17) der Reihe endet.1. cylinder head for liquid-cooled internal combustion engines,
with several combustion chamber wall sections (6) arranged in a row for assigned working cylinders (7),
with at least one coolant outlet opening (9 and 10) arranged on a first end region (8) of the row on the cylinder head (3) and consisting of a cylinder head cooling jacket (5) for a cooler feed line (11) and for a short circuit line (12) a cooling jacket inlet opening (coolant pump 16) and
with a further coolant outlet opening (23) of the cylinder head cooling jacket (5) for a heating flow line (19) to a heating device (20), arranged on the cylinder head (3) at the opposite second end region (17), characterized in that
that to the outlet opening (23) for the heating flow line (19) inside the cooling jacket (5) is connected by a pipe (18) built in through the outlet opening (23), which - apart from bearing points (24) - in the cooling jacket (5) exposed ends at a distance from the second end region (17) of the row. 2. Zylinderkopf nach Anspruch 1, dadurch gekennzeichnet,
daß die Rohrleitung (18) im wesentlichen zylindrisch mit einer einzigen im Kühlmantel (5) liegenden Eintritts-Endöffnung (22) ausgebildet ist.2. Cylinder head according to claim 1, characterized in that
that the pipeline (18) is essentially cylindrical with a single inlet end opening (22) lying in the cooling jacket (5). 3. Zylinderkopf nach Anspruch 1, dadurch gekennzeichnet,
daß der Rohrleitung (18) ein außen-liegender Schlauch-An­schlußstutzen (27) einstückig angeformt ist.3. Cylinder head according to claim 1, characterized in that
that the pipe (18) is an integral hose connection piece (27) formed in one piece.
EP87106132A 1986-05-09 1987-04-28 Cylinder head for a water-cooled internal-combustion engine Expired - Lifetime EP0244735B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3615642 1986-05-09
DE3615642A DE3615642C1 (en) 1986-05-09 1986-05-09 Cylinder head for liquid-cooled internal combustion engines

Publications (3)

Publication Number Publication Date
EP0244735A2 true EP0244735A2 (en) 1987-11-11
EP0244735A3 EP0244735A3 (en) 1988-12-28
EP0244735B1 EP0244735B1 (en) 1990-11-14

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ID=6300460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106132A Expired - Lifetime EP0244735B1 (en) 1986-05-09 1987-04-28 Cylinder head for a water-cooled internal-combustion engine

Country Status (3)

Country Link
EP (1) EP0244735B1 (en)
DE (2) DE3615642C1 (en)
ES (1) ES2019076B3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2857412A1 (en) * 2003-07-07 2005-01-14 Renault Sa Cylinder head for heat engine of motor vehicle, has inner conduit with section oriented in vertical direction that is inclined towards cylinder axis to provide large volume for injectors upper part and to permit inclination of valve guide
FR2886341A1 (en) * 2005-05-27 2006-12-01 Renault Sas I.c. engine with branch coolant circuit integrated with cylinder head has circuit independent of thermostat housing
DE102010016099A1 (en) 2009-03-24 2010-09-30 Avl List Gmbh Cylinder head of an internal combustion engine

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DE10338778B4 (en) * 2003-08-23 2006-05-18 Adam Opel Ag Cylinder head for an internal combustion engine

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US1354335A (en) * 1920-01-14 1920-09-28 Alden E Osborn Inverted-head-engine water-jacket
DE667420C (en) * 1936-09-18 1938-11-11 Adam Opel Akt Ges Fluid cooling device for cylinder blocks of multi-cylinder internal combustion engines
DE2631121A1 (en) * 1976-07-10 1978-01-12 Daimler Benz Ag Liq. cooled IC engine coolant cycle - has additional pump for matching circulation to heat release
DE3337428A1 (en) * 1983-10-14 1985-04-25 Bayerische Motoren Werke AG, 8000 München Liquid-cooled cylinder head for internal combustion engines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2857412A1 (en) * 2003-07-07 2005-01-14 Renault Sa Cylinder head for heat engine of motor vehicle, has inner conduit with section oriented in vertical direction that is inclined towards cylinder axis to provide large volume for injectors upper part and to permit inclination of valve guide
FR2886341A1 (en) * 2005-05-27 2006-12-01 Renault Sas I.c. engine with branch coolant circuit integrated with cylinder head has circuit independent of thermostat housing
DE102010016099A1 (en) 2009-03-24 2010-09-30 Avl List Gmbh Cylinder head of an internal combustion engine
DE102010016099B4 (en) 2009-03-24 2024-02-08 Avl List Gmbh Cylinder head of an internal combustion engine

Also Published As

Publication number Publication date
EP0244735B1 (en) 1990-11-14
DE3615642C1 (en) 1987-07-30
ES2019076B3 (en) 1991-06-01
EP0244735A3 (en) 1988-12-28
DE3766150D1 (en) 1990-12-20

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