EP0457051B1 - Cylinder-crankcase - Google Patents

Cylinder-crankcase Download PDF

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Publication number
EP0457051B1
EP0457051B1 EP91106274A EP91106274A EP0457051B1 EP 0457051 B1 EP0457051 B1 EP 0457051B1 EP 91106274 A EP91106274 A EP 91106274A EP 91106274 A EP91106274 A EP 91106274A EP 0457051 B1 EP0457051 B1 EP 0457051B1
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EP
European Patent Office
Prior art keywords
channel
cover
transverse channel
case according
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91106274A
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German (de)
French (fr)
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EP0457051A1 (en
Inventor
Xaver Stemmer
Clemens Bandel
Manfred Buchborn
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.)
Audi AG
Eisenwerk Bruehl GmbH
Original Assignee
Audi AG
Eisenwerk Bruehl GmbH
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Publication date
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Publication of EP0457051A1 publication Critical patent/EP0457051A1/en
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Publication of EP0457051B1 publication Critical patent/EP0457051B1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases or frames
    • F02F7/0065Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/007Adaptations for cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases or frames
    • F02F7/0002Cylinder arrangements
    • F02F7/0012Crankcases of V-engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases or frames
    • F02F7/0065Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/0073Adaptations for fitting the engine, e.g. front-plates or bell-housings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/16Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18Multi-cylinder engines
    • F02B75/22Multi-cylinder engines with cylinders in V, fan, or star arrangement

Definitions

  • the invention relates to a cylinder crankcase of a liquid-cooled reciprocating piston internal combustion engine with cylinders arranged in a V-shape and surrounded by cooling channels, according to the preamble of patent claim 1.
  • Such a cylinder crankcase is shown in DE-C 36 33 261.
  • a channel-shaped open transverse channel is arranged on the power output side of the housing, which connects the cooling channels formed around the cylinders to one another and which can be closed by means of a cover.
  • the formation of such a transverse channel results in an efficient guidance of the cooling medium and also has advantages in terms of casting technology.
  • the cover only serves to seal the transverse channel.
  • the cooling medium can be drained, for example in the event of a repair, in such a way that at least when the cylinder heads or other parts exposed to the cooling medium are removed (such as a thermostat, water pump), no cooling medium runs out in an uncontrolled manner or can run into the open cylinders is not apparent from the aforementioned document.
  • the invention has for its object the generic To further develop the cylinder crankcase in such a way that, in terms of casting technology and in part, with little additional effort, it is possible to drain the cooling medium in a favorable and easily accessible manner, and harmful leakages between the coolant and the adjacent lubricant-containing environment are avoided.
  • the transverse channel connecting the cooling channels of the cylinder rows be L-shaped with a branching channel section, this channel section being guided downward (in the sense of the installation position of the internal combustion engine) and provided with a drain plug.
  • a shaft surrounding the drain plug can also be provided according to claim 2 in the components adjoining the cylinder crankcase at its lower region, for example a reinforcing part containing the crankshaft bearing bridges and / or an oil pan.
  • the drain plug can then be screwed in or out via this shaft without any disassembly of these components.
  • the cover closing the transverse channel can also carry the shaft sealing ring for sealing the crankshaft. Since such a cover is already present in many cylinder crankcases, this cover can be produced with little additional effort. This does not increase the number of parts of the internal combustion engine.
  • the drainage channel can be provided in the cover in a particularly simple manner, wherein if a flat seal is used, this is provided with openings in the region of the drainage channel.
  • FIG. 1 shows the cylinder crankcase 10 of a six-cylinder reciprocating piston internal combustion engine in a V-shaped cylinder arrangement with a cylinder row 12 on the left in the drawing plane, a right cylinder row 14 and a crankcase 16 connecting the two cylinder rows.
  • bearing seats 17 molded, which serve for the rotatable mounting of a crankshaft, not shown.
  • a channel-shaped open transverse channel 20 is formed in the front side 18 which represents the power output side or flywheel side of the internal combustion engine and which intersects a cooling channel 22 of the left row of cylinders 12 and a cooling channel 24 of the right row of cylinders 14.
  • a connection between the transverse channel 20 and the cooling channels of the left and right cylinder rows 12, 14 could, however, also be established by means of corresponding bores extending from the transverse channel 20.
  • the transverse channel 20 is L-shaped with an approximately vertically downward channel section 26, the section 26 being delimited by a lower wall 28.
  • the wall 28 forms a connection surface 30 for components adjoining the crankcase 16, namely a reinforcing part 32 (only partially shown in dashed lines) supporting the bearing bridges for supporting the crankshaft and an oil pan (not shown) adjoining the reinforcing part 32.
  • a downward-pointing threaded bore 34 is provided, into which a drain plug 36 is screwed tight.
  • a downwardly open shaft 38 is formed in the reinforcing part 32, through which the tool for screwing in or unscrewing the drain screw 36 can be inserted.
  • the shaft 38 is continued in the oil pan adjoining the reinforcing part 32.
  • a sealing surface 56 with threaded bores 40 is incorporated in the end face 18, which serves to fasten a cover 42 (see FIGS. 2 and 3) using screws, not shown.
  • the cover 42 (cf. FIG. 3) has a sealing surface 44 which runs around the transverse channel 20 and corresponds to the sealing surface 56 and in which holes 46 for the fastening screws (not shown) are machined in accordance with the hole pattern of the threaded holes. Furthermore, a central bore 48 is provided in the cover 42, into which a shaft sealing ring 51 (see also FIG. 2) is inserted for sealing the crankshaft. In the circumferential area between the central bore 48 and the transverse channel 20 with the channel section 26, a drainage channel 50 is worked into the sealing surface 44 in the form of an open channel, which runs along the radially inner bores 46 at 52 and at 54 to the atmosphere. The course of the drainage channel 50 is shown again in dashed lines in FIG. 1, its outlets at 52 and 54 having a free outlet into the end face 18 or to the atmosphere.
  • a flat seal 58 (FIG. 4) made of a suitable sealing material is provided between the end face 18 or the sealing surfaces 56 delimiting the transverse channel 20 and the cover 42 or its sealing surfaces 44, which is provided with openings 60 in the area of overlap with the drainage channel 50.
  • the openings 60 ensure that regardless of the sealing surface 44 or 56 at which a leakage occurs, the leakage medium is introduced into the drainage channel 50 and removed accordingly.
  • Fig. 1 shows the installation position of the cylinder crankcase as an internal combustion engine in the motor vehicle.
  • the advantage here is that the transverse channel 22 is geodetically below a dash-dotted plane 62, because this ensures when draining the cooling medium via the channel section 26 and after removing the drain plug 36 that no cooling medium from above into the cylinder heads when dismantling Cylinder runs in or emerges from the internal combustion engine in an uncontrolled manner via the cylinder head-cylinder sealing surfaces.
  • the L-shaped transverse channel 20 with channel section 26 is designed as an open channel which can be formed from the end face 18 of the cylinder crankcase 10 during casting. It is only necessary to design the shaping tool determining the contour of the end face 18 accordingly. A sand core, which must then be removed separately, is not required.

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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)

Description

Die Erfindung betrifft ein Zylinder-Kurbelgehäuse einer flüssigkeitsgekühlten Hubkolben-Brennkraftmaschine mit V-förmig angeordneten Zylindern, die von Kühlkanälen umgeben sind, gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a cylinder crankcase of a liquid-cooled reciprocating piston internal combustion engine with cylinders arranged in a V-shape and surrounded by cooling channels, according to the preamble of patent claim 1.

Ein derartiges Zylinder-Kurbelgehäuse zeigt die DE-C 36 33 261. Dabei ist an der kraftabgabeseitigen Stirnseite des Gehäuses ein rinnenförmig offener Querkanal angeordnet, der die um die Zylinder herum gebildeten Kühlkanäle miteinander verbindet und der mittels eines Deckels verschließbar ist. Die Ausbildung eines derartigen Querkanales bewirkt eine effiziente Führung des Kühlmediums und hat auch gießtechnische Vorteile.Such a cylinder crankcase is shown in DE-C 36 33 261. In this case, a channel-shaped open transverse channel is arranged on the power output side of the housing, which connects the cooling channels formed around the cylinders to one another and which can be closed by means of a cover. The formation of such a transverse channel results in an efficient guidance of the cooling medium and also has advantages in terms of casting technology.

Bei dem gezeigten Zylinder-Kurbelgehäuse dient der Deckel jedoch nur zur Abdichtung des Querkanales. Wie ein Ablassen des Kühlmediums beispielsweise im Falle einer Reparatur derart erfolgen kann, daß zumindest beim Abnehmen der Zylinderköpfe bzw. anderer mit Kühlmedium beaufschlagter Teile (wie z. B. Thermostat, Wasserpumpe) kein Kühlmedium unkontrolliert ausläuft oder in die dann offenen Zylinder hineinlaufen kann, ist der vorgenannten Schrift nicht entnehmbar.In the cylinder crankcase shown, however, the cover only serves to seal the transverse channel. How the cooling medium can be drained, for example in the event of a repair, in such a way that at least when the cylinder heads or other parts exposed to the cooling medium are removed (such as a thermostat, water pump), no cooling medium runs out in an uncontrolled manner or can run into the open cylinders is not apparent from the aforementioned document.

Der Erfindung liegt die Aufgabe zugrunde, das gattungsgemäße Zylinder-Kurbelgehäuse derart weiterzubilden, daß bei gießtechnisch und teilemäßig geringem Mehraufwand ein günstiges, gut zugängliches Ablassen des Kühlmediums ermöglicht und schädliche Leckagen zwischen Kühlmittel und benachbartem schmiermittelhaltigem Milieu vermieden sind.The invention has for its object the generic To further develop the cylinder crankcase in such a way that, in terms of casting technology and in part, with little additional effort, it is possible to drain the cooling medium in a favorable and easily accessible manner, and harmful leakages between the coolant and the adjacent lubricant-containing environment are avoided.

Diese Aufgabe wird bei dem gattungsgemäßen Zylinder-Kurbelgehäuse durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst. Vorteilhafte und zweckmäßige Weiterbildungen der Erfindung sind den weiteren Patentansprüchen entnehmbar.This object is achieved in the generic cylinder crankcase by the characterizing features of claim 1. Advantageous and expedient developments of the invention can be found in the further claims.

Erfindungsgemäß wird somit vorgeschlagen, den die Kühlkanäle der Zylinderreihen verbindenden Querkanal L-förmig mit einem abzweigenden Kanalabschnitt auszuführen, wobei dieser Kanalabschnitt nach unten (im Sinne der Einbaulage der Brennkraftmaschine) geführt und mit einer Ablaßschraube versehen ist. Dadurch wird es ermöglicht, an einer zumeist gut zugänglichen Stelle von unterhalb der Brennkraftmaschine die Ablaßschraube zu entfernen und beispielsweise bei einer Reparatur das Kühlmittel entsprechend abzulassen.According to the invention, it is thus proposed that the transverse channel connecting the cooling channels of the cylinder rows be L-shaped with a branching channel section, this channel section being guided downward (in the sense of the installation position of the internal combustion engine) and provided with a drain plug. This makes it possible to remove the drain plug at a generally easily accessible location from below the internal combustion engine and, for example, to drain the coolant accordingly during a repair.

In besonders zweckmäßiger Weise kann dabei zudem gemäß Anspruch 2 in den an das Zylinder-Kurbelgehäuse an deren unteren Bereich anschließenden Bauteilen wie beispielsweise einen die Kurbelwellen-Lagerbrücken enthaltendem Verstärkungsteil und/oder einer Ölwanne ein die Ablaßschraube umgebender Schacht vorgesehen sein. Über diesen Schacht kann dann ohne jegliche Demontage dieser Bauteile die Ablaßschraube ein- oder ausgeschraubt werden.In a particularly expedient manner, a shaft surrounding the drain plug can also be provided according to claim 2 in the components adjoining the cylinder crankcase at its lower region, for example a reinforcing part containing the crankshaft bearing bridges and / or an oil pan. The drain plug can then be screwed in or out via this shaft without any disassembly of these components.

Besonders vorteilhaft kann ferner der den Querkanal verschließende Deckel zugleich den Wellendichtring zur Abdichtung der Kurbelwelle tragen. Da ein derartiger Deckel bei vielen Zylinder-Kurbelgehäusen bereits vorhanden ist, ist dieser Deckel mit nur geringem Mehraufwand darstellbar. Der Teileaufwand der Brennkraftmaschine wird dadurch nicht erhöht.Particularly advantageously, the cover closing the transverse channel can also carry the shaft sealing ring for sealing the crankshaft. Since such a cover is already present in many cylinder crankcases, this cover can be produced with little additional effort. This does not increase the number of parts of the internal combustion engine.

Da über den Wellendichtring eine schmierölseitige Abdichtung des Zylinder-Kurbelgehäuses und über den Querkanal eine kühlmittelseitige Abdichtung vorliegt, wird zur Vermeidung von schädlichen Leckagen beispielsweise von Kühlmittel in das schmiermittelhaltige Milieu vorgeschlagen, gemäß Anspruch 4 einen Drainagekanal vorzusehen, der gegebenenfalls durchsickerndes Medium ins Freie ableitet.Since there is a seal on the lubricating oil side of the cylinder crankcase via the shaft sealing ring and a seal on the coolant side via the transverse channel, in order to avoid harmful leakages, for example of coolant into the lubricant-containing environment, it is proposed to provide a drainage channel according to claim 4, which conducts any seeping medium to the outside.

Herstellungstechnisch besonders einfach kann dabei der Drainagekanal nur im Deckel vorgesehen sein, wobei bei Verwendung einer Flachdichtung diese gemäß Anspruch 6 mit Durchbrechungen im Bereich des Drainagekanales versehen ist.In terms of production technology, the drainage channel can be provided in the cover in a particularly simple manner, wherein if a flat seal is used, this is provided with openings in the region of the drainage channel.

Ein Ausführungsbeispiel der Erfindung ist im folgenden mit weiteren Einzelheiten näher erläutert. Die schematische Zeichnung zeigt in

Fig. 1
eine Ansicht der Schwungrad-Stirnseite eines Zylinder-Kurbelgehäuses einer Sechszylinder-Hubkolben-Brennkraftmaschine mit V-förmiger Anordnung der Zylinder;
Fig. 2
einen Schnitt gemäß Linie II-II der Fig. 1 durch den Querkanal mit angeschraubtem Deckel;
Fig. 3
eine Ansicht auf die Dichtflächenseite des den Querkanal verschließenden Deckels mit eingeformten Drainagekanal; und
Fig. 4
eine Ansicht auf die zwischen dem Zylinder-Kurbelgehäuse und dem Deckel verwendete Flachdichtung.
An embodiment of the invention is explained in more detail below with further details. The schematic drawing shows in
Fig. 1
a view of the flywheel end face of a cylinder crankcase of a six-cylinder reciprocating internal combustion engine with a V-shaped arrangement of the cylinders;
Fig. 2
a section along line II-II of Figure 1 through the cross channel with screwed cover.
Fig. 3
a view of the sealing surface side of the cover closing the cross channel with molded drain channel; and
Fig. 4
a view of the flat gasket used between the cylinder crankcase and the cover.

Die Fig. 1 zeigt das Zylinder-Kurbelgehäuse 10 einer Sechszylinder-Hubkolben-Brennkraftmaschine in V-förmiger Zylinderanordnung mit einer in der Zeichnungsebene linken Zylinderreihe 12, einer rechten Zylinderreihe 14 und einem die beiden Zylinderreihen verbindendem Kurbelgehäuse 16. In dem Kurbelgehäuse 16 sind Lagerstühle 17 eingeformt, die zur drehbaren Lagerung einer nicht dargestellten Kurbelwelle dienen.1 shows the cylinder crankcase 10 of a six-cylinder reciprocating piston internal combustion engine in a V-shaped cylinder arrangement with a cylinder row 12 on the left in the drawing plane, a right cylinder row 14 and a crankcase 16 connecting the two cylinder rows. In the crankcase 16 there are bearing seats 17 molded, which serve for the rotatable mounting of a crankshaft, not shown.

In die die Kraftabgabeseite bzw. Schwungradseite der Brennkraftmaschine darstellende Stirnseite 18 ist ein rinnenförmig offener Querkanal 20 eingeformt, der einen Kühlkanal 22 der linken Zylinderreihe 12 und einen Kühlkanal 24 der rechten Zylinderreihe 14 schneidet. Eine Verbindung zwischen dem Querkanal 20 und den Kühlkanälen der linken und rechten Zylinderreihen 12,14 könnte jedoch auch mittels entsprechender, vom Querkanal 20 ausgehender Bohrungen hergestellt sein.A channel-shaped open transverse channel 20 is formed in the front side 18 which represents the power output side or flywheel side of the internal combustion engine and which intersects a cooling channel 22 of the left row of cylinders 12 and a cooling channel 24 of the right row of cylinders 14. A connection between the transverse channel 20 and the cooling channels of the left and right cylinder rows 12, 14 could, however, also be established by means of corresponding bores extending from the transverse channel 20.

Der Querkanal 20 ist L-förmig mit einem etwa vertikal nach unten verlaufenden Kanalabschnitt 26 ausgeführt, wobei der Abschnitt 26 durch eine untere Wand 28 begrenzt ist. Die Wand 28 bildet eine Anschlußfläche 30 für an das Kurbelgehäuse 16 anschließende Bauteile, nämlich ein die Lagerbrücken für die Lagerung der Kurbelwelle tragendes Verstärkungsteil 32 (nur teilweise gestrichelt dargestellt) und eine an das Verstärkungsteil 32 anschließende Ölwanne (nicht dargestellt).The transverse channel 20 is L-shaped with an approximately vertically downward channel section 26, the section 26 being delimited by a lower wall 28. The wall 28 forms a connection surface 30 for components adjoining the crankcase 16, namely a reinforcing part 32 (only partially shown in dashed lines) supporting the bearing bridges for supporting the crankshaft and an oil pan (not shown) adjoining the reinforcing part 32.

In der Wand 28 ist eine nach unten weisende Gewindebohrung 34 vorgesehen, in die eine Ablaßschraube 36 dicht eingeschraubt ist. Um die Zugänglichkeit der beispielsweise als Inbusschraube ausgebildeten Ablaßschraube 36 sicherzustellen, ist in dem Verstärkungsteil 32 ein nach unten offener Schacht 38 ausgebildet, durch den hindurch das Werkzeug zum Ein- oder Ausschrauben der Ablaßschraube 36 einführbar ist. Der Schacht 38 ist in der an das Verstärkungsteil 32 anschließenden Ölwanne fortgeführt.In the wall 28, a downward-pointing threaded bore 34 is provided, into which a drain plug 36 is screwed tight. In order to ensure the accessibility of the drain screw 36, which is designed, for example, as an Allen screw, a downwardly open shaft 38 is formed in the reinforcing part 32, through which the tool for screwing in or unscrewing the drain screw 36 can be inserted. The shaft 38 is continued in the oil pan adjoining the reinforcing part 32.

Um den L-förmigen Querkanal 20 mit Kanalabschnitt 26 herum ist in der Stirnseite 18 eine Dichtfläche 56 mit Gewindebohrungen 40 eingearbeitet, die zum Befestigen eines Deckels 42 (vgl. Figuren 2 und 3) unter Verwendung nicht dargestellter Schrauben dient.Around the L-shaped transverse channel 20 with channel section 26, a sealing surface 56 with threaded bores 40 is incorporated in the end face 18, which serves to fasten a cover 42 (see FIGS. 2 and 3) using screws, not shown.

Der Deckel 42 (vgl. Fig. 3) weist eine um den Querkanal 20 umlaufende, mit der Dichtfläche 56 korrespondierende Dichtfläche 44 auf, in der entsprechend dem Lochbild der Gewindelöcher 40 Bohrungen 46 für die nicht dargestellten Befestigungsschrauben eingearbeitet sind. Ferner ist in dem Deckel 42 eine zentrale Bohrung 48 vorgesehen, in die ein Wellendichtring 51 (vgl. auch Fig. 2) zur Abdichtung der Kurbelwelle eingesetzt ist. In dem Umfangsbereich zwischen der zentralen Bohrung 48 und dem Querkanal 20 mit dem Kanalabschnitt 26 ist in die Dichtfläche 44 ein Drainagekanal 50 in Form einer offenen Rinne eingearbeitet, der entlang den radial innen liegenden Bohrungen 46 verlaufend bei 52 und bei 54 zur Atmosphäre offen ist. Der Verlauf des Drainagekanales 50 ist in der Fig. 1 in gestrichelten Linien nochmals dargestellt, wobei dessen Ausmündungen bei 52 und 54 eine freie Ausmündung in die Stirnfläche 18 bzw. zur Atmosphäre haben.The cover 42 (cf. FIG. 3) has a sealing surface 44 which runs around the transverse channel 20 and corresponds to the sealing surface 56 and in which holes 46 for the fastening screws (not shown) are machined in accordance with the hole pattern of the threaded holes. Furthermore, a central bore 48 is provided in the cover 42, into which a shaft sealing ring 51 (see also FIG. 2) is inserted for sealing the crankshaft. In the circumferential area between the central bore 48 and the transverse channel 20 with the channel section 26, a drainage channel 50 is worked into the sealing surface 44 in the form of an open channel, which runs along the radially inner bores 46 at 52 and at 54 to the atmosphere. The course of the drainage channel 50 is shown again in dashed lines in FIG. 1, its outlets at 52 and 54 having a free outlet into the end face 18 or to the atmosphere.

Zwischen der Stirnseite 18 bzw. den den Querkanal 20 begrenzenden Dichtflächen 56 und dem Deckel 42 bzw. dessen Dichtflächen 44 ist eine Flachdichtung 58 (Fig. 4) aus einem geeignetem Dichtungsmaterial beigelegt, die im Überdeckungsbereich mit dem Drainagekanal 50 mit Durchbrechungen 60 versehen ist. Die Durchbrechungen 60 stellen sicher, daß unabhängig davon, an welcher Dichtfläche 44 oder 56 eine Leckage stattfindet, das Leckagemedium in den Drainagekanal 50 eingeleitet und entsprechend abgeführt wird.A flat seal 58 (FIG. 4) made of a suitable sealing material is provided between the end face 18 or the sealing surfaces 56 delimiting the transverse channel 20 and the cover 42 or its sealing surfaces 44, which is provided with openings 60 in the area of overlap with the drainage channel 50. The openings 60 ensure that regardless of the sealing surface 44 or 56 at which a leakage occurs, the leakage medium is introduced into the drainage channel 50 and removed accordingly.

Die Fig. 1 zeigt die Einbaulage des Zylinder-Kurbelgehäuses als Brennkraftmaschine im Kraftfahrzeug. Von Vorteil ist dabei, daß der Querkanal 22 geodätisch unterhalb einer strichpunktiert dargestellten Ebene 62 liegt, weil dadurch bei einem Ablassen des Kühlmediums über den Kanalabschnitt 26 und nach Entfernen der Ablaßschraube 36 sichergestellt ist, daß bei einem Abbauen der Zylinderköpfe kein Kühlmedium von oben in die Zylinder hineinläuft oder aber über die Zylinderkopf-Zylinder-Dichtungsflächen unkontrolliert von der Brennkraftmaschine austritt.Fig. 1 shows the installation position of the cylinder crankcase as an internal combustion engine in the motor vehicle. The advantage here is that the transverse channel 22 is geodetically below a dash-dotted plane 62, because this ensures when draining the cooling medium via the channel section 26 and after removing the drain plug 36 that no cooling medium from above into the cylinder heads when dismantling Cylinder runs in or emerges from the internal combustion engine in an uncontrolled manner via the cylinder head-cylinder sealing surfaces.

Wie insbesondere die Fig. 2 zeigt, ist der L-förmige Querkanal 20 mit Kanalabschnitt 26 als eine offene Rinne ausgebildet, die von der Stirnseite 18 des Zylinder-Kurbelgehäuses 10 her beim Gießen eingeformt werden kann. Es ist lediglich das die Kontur der Stirnseite 18 bestimmende Formwerkzeug entsprechend auszubilden. Ein Sandkern, der anschließend separat zu entfernen ist, ist nicht erforderlich.As shown in FIG. 2 in particular, the L-shaped transverse channel 20 with channel section 26 is designed as an open channel which can be formed from the end face 18 of the cylinder crankcase 10 during casting. It is only necessary to design the shaping tool determining the contour of the end face 18 accordingly. A sand core, which must then be removed separately, is not required.

Claims (6)

  1. Cylinder crankcase (10) of a liquid-cooled reciprocating internal-combustion engine having cylinders (12,14) which are arranged in a V-shaped manner and which are surrounded by cooling channels (22,24), the cooling channels (22,24) being connected to one another via at least one transverse channel (20) arranged on the end face and open in the form of a gutter, and the transverse channel (20) being closed by means of a cover (42), characterized in that the transverse channel (20) is made L-shaped with a channel portion (26) which leads. downwards and which is limited by a lower wall (28), and in that the channel portion (26) corresponds, at this lower wall (28), to a drainage orifice (34), into which a drain plug (36) is sealingly screwed.
  2. Case according to Claim 1, characterized in that the drainage orifice (34) starts from the lower sealing face (30) terminating the cylinder crankcase, and in that the structural part (reinforcing part 32 and/or oil sump) placed onto the sealing face (30) has a shaft (38) surrounding the drain plug (36).
  3. Case according to Claim 1, characterized in that the cover (42) closing off the transverse channel (20) receives at the same time the shaft sealing ring (51) for sealing off the crankshaft.
  4. Case according to one of Claims 1 to 3, characterized in that a drainage channel (50) open to the atmosphere is provided in the sealing faces (44) between the transverse channel (20) and the adjacent region loaded with lubricating oil.
  5. Case according to Claim 4, characterized in that the drainage channel (50) is provided only in the sealing face (44) of the cover (42).
  6. Case according to Claim 5, characterized in that a flat gasket (58) is inserted between the case (10) and cover (42), and in that the flat gasket (58) is provided with perforations (60) in the region of the drainage channel (50).
EP91106274A 1990-05-14 1991-04-19 Cylinder-crankcase Expired - Lifetime EP0457051B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015409 1990-05-14
DE4015409A DE4015409C1 (en) 1990-05-14 1990-05-14

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EP0457051A1 EP0457051A1 (en) 1991-11-21
EP0457051B1 true EP0457051B1 (en) 1993-12-29

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DE19508967C2 (en) * 1995-03-13 1997-04-03 Daimler Benz Ag Ventilation device for the crankcase of an internal combustion engine
DE19628400C1 (en) * 1996-07-15 1998-01-29 Daimler Benz Ag Crankcase for internal combustion engine with V=form cylinders
DE10121063A1 (en) * 2001-04-28 2002-10-31 Bayerische Motoren Werke Ag Water-cooled cylinder head for an internal combustion engine
JP3867841B2 (en) * 2001-10-26 2007-01-17 本田技研工業株式会社 V-type internal combustion engine for motorcycles
FR2903150B1 (en) * 2006-07-03 2008-09-26 Renault Sas ASSEMBLY COMPRISING WORKPIECES AND A FLAT METAL JOINT HAVING A FRANGIBLE CONNECTION PART AND MOTOR COMPRISING SUCH AN ASSEMBLY

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FR1172911A (en) * 1956-03-12 1959-02-17 Ferguson Res Ltd Harry Internal combustion engines
US2949103A (en) * 1959-09-11 1960-08-16 Gen Motors Corp Liquid circulating system for liquid cooled internal combustion engine
DE2553291C3 (en) * 1975-11-27 1979-12-13 Bayerische Motoren Werke Ag, 8000 Muenchen Cast cylinder crankcase for water-cooled V-engines
US4483278A (en) * 1983-05-10 1984-11-20 Kolacz Stephen J Full view engine cover
JPS60155710U (en) * 1984-03-27 1985-10-17 本田技研工業株式会社 Lubrication system in internal combustion engines
DE3633261C1 (en) * 1986-09-30 1987-05-21 Bayerische Motoren Werke Ag Cast machine housing for liquid-cooled internal combustion engines with a V-shaped cylinder arrangement
DE3634735A1 (en) * 1986-10-11 1988-04-21 Goetze Ag LOCKING CAP, ESPECIALLY FOR CRANKSHAFT AND GEARBOX HOUSING IN MOTOR VEHICLES

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ES2047966T3 (en) 1994-03-01
DE4015409C1 (en) 1991-06-13
EP0457051A1 (en) 1991-11-21

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