EP0613524B1 - Cylinder block for an internal combustion engine - Google Patents

Cylinder block for an internal combustion engine Download PDF

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Publication number
EP0613524B1
EP0613524B1 EP93914713A EP93914713A EP0613524B1 EP 0613524 B1 EP0613524 B1 EP 0613524B1 EP 93914713 A EP93914713 A EP 93914713A EP 93914713 A EP93914713 A EP 93914713A EP 0613524 B1 EP0613524 B1 EP 0613524B1
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EP
European Patent Office
Prior art keywords
cylinders
cylinder block
cylinder head
region
cylinder
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.)
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EP93914713A
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German (de)
French (fr)
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EP0613524A1 (en
Inventor
Nico Johan Van Bezeij
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Eisenwerk Bruehl GmbH
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Eisenwerk Bruehl GmbH
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    • 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
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/02Cylinders; Cylinder heads  having cooling means
    • F02F1/10Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/108Siamese-type cylinders, i.e. cylinders cast together
    • 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
    • F02F7/0007Crankcases of engines with cylinders in line
    • 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
    • F02B2075/1804Number of cylinders
    • F02B2075/1816Number of cylinders four

Definitions

  • the invention relates to a cast iron cylinder block for an internal combustion engine.
  • the invention is based on the object of designing a cylinder block of the type mentioned at the outset as a light block with high dimensional stability which can be produced from gray cast iron.
  • This configuration means that the forces effective between the cylinder head and the crankshaft bearing and to be absorbed by the cylinder block can be absorbed primarily via these reinforcing ribs, so that all other wall parts can be made noticeably thinner.
  • the material weight to be applied for the U-shaped reinforcing ribs is less than that by reducing the wall thicknesses of the crankcase upper part and of the housing jacket lying between the crankcase upper part and the water jacket. It is advantageous here that the inside of the U-profile extends at the upper end in an extension of the holes for the cylinder head screws.
  • the inside of the U-profile ends at the lower end in an extension of the holes for the fastening screws of the crankshaft bearing.
  • the U-profile ends in the area of the crankshaft bearing. Since the cylinder head bolts on the one hand and the area of the crankshaft bearing on the other hand primarily have to absorb the forces acting during operation, there is a defined, linear flow of force between the cylinder head and the crankshaft bearing, which enables a strength calculation to be carried out with sufficient accuracy so that the rest of the dimensioning is largely flat and as the jacket-serving parts of the cylinder block, the wall thickness is practically only to be taken into account with regard to perfect pourability.
  • the reinforcing ribs each run on the top of the bearing web for the crankshaft bearing up to the foot region of the cylinder block.
  • a jacket rib adjoining the reinforcing rib of the foot region.
  • the jacket rib also expediently has a profile which is U-shaped in cross section.
  • At least one of the cross-sectionally U-shaped reinforcing ribs is formed at least in the area of the adjacent cylinders by means of a cover as a closed channel, which at the upper end in the area of the connection plane for the cylinder head with an inlet opening and on lower end is provided with an outlet opening and forms an oil return channel.
  • the oil return duct continues in the area below the cylinders as a pre-cast duct on the housing jacket. It is particularly advantageous here if the jacket rib which is provided on the housing jacket for reinforcement purposes and which is U-shaped in cross section is used in the same way as the reinforcing rib in the cylinder area.
  • the cylinder block 1 shown in the top view in FIG. 1 is made of a gray cast iron quality used for cylinder housings, for example compact graphite cast iron (CGG).
  • CGG compact graphite cast iron
  • the cylinders 2 are integrally connected to the cylinder block 1 and are supported together with the water jacket 3 on the bearing webs 4 for the crankshaft bearings.
  • the bearing webs 4 run obliquely outwards into the foot area 5 of the cylinder block 1.
  • a housing jacket 6 is provided which extends over the entire length of the cylinder block and extends from the foot region 5 to the lower end of the water jacket (FIG. 4).
  • the bearing web 4 itself is designed as a U-shaped profile, the profile opening upwards.
  • the connecting web 10 between the two outer bearing webs 4 is designed as an upwardly open U-profile, as can also be seen from FIGS. 4 and 5.
  • the housing jacket 6 in the region of the division plane with a reinforcing rib 11, as is indicated by dashed lines in FIG. 5 for the right side of the housing jacket.
  • This can be a simple but also a rib with a U-shaped cross section.
  • FIG. 7 again shows a top view of a cylinder block for a four-cylinder in-line engine, which is produced from a gray cast iron quality used for cylinder housings, for example with compact graphite cast iron (CGG).
  • CGG compact graphite cast iron
  • the structure corresponds essentially to the structure of the cylinder block described with reference to FIG. 1, so that reference can be made to this.
  • the same reference numerals are used for the same components.
  • These reinforcing ribs 7 are, as already according to the embodiment according to. Fig. 1 and the associated further drawings described, U-shaped in cross section.
  • the reinforcing ribs 7 are designed such that they extend at the upper end in their extension into the bores 8 for the cylinder head screws.
  • a modification of the embodiment according to Fig. 1 is according to the embodiment.
  • Fig. 7 however, the reinforcing rib 7.1 in the central region of the cylinder block with a cover 13, so that this reinforcing rib 7.1 is designed as a closed channel.
  • the cover 13 is around the extension 14 for the associated bore 8 to the outside guided around so that an inlet opening 16 lying in the connection plane 15 for the cylinder head is formed.
  • This closed channel formed by the cover 13 extends in the illustrated embodiment, as can be seen in FIG. 8, initially over the vertical longitudinal region of the cylinders.
  • the channel then continues on the inside of the housing jacket 6, the reinforcement rib 11 on the inside of the housing jacket in this area being used for this purpose, which at least at this point has a U-shaped cross section having.
  • a corresponding opening, which forms an outlet opening 19 is then provided in the foot region 5 in a manner similar to that in the region of the connection level 15. In this way, a continuous channel is available through which the oil accumulating in the cylinder head area can be discharged.
  • this oil return channel it is not necessary that 6 reinforcing ribs are provided in the housing jacket. It is also possible to provide here a return channel correspondingly cast onto the housing jacket 6 only for the purpose of forming a return channel, whereby this oil return channel does not necessarily have to run on the inside of the housing jacket, as shown in FIG. 8, but also in connection with the Bypass of the pressure oil hole extending in the longitudinal direction through the entire cylinder block on the outside of the housing shell 6 can extend.
  • FIG. 9 shows the configuration of the reinforcing ribs 7 on the one hand and the configuration of the central reinforcing rib 7.1 to form an oil return channel on the other hand in section.

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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)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PCT No. PCT/EP93/01613 Sec. 371 Date May 16, 1994 Sec. 102(e) Date May 16, 1994 PCT Filed Jun. 24, 1993 PCT Pub. No. WO94/07017 PCT Pub. Date Mar. 31, 1994.A cast iron cylinder block for an internal combustion engine having a crankcase which defines a region for crankshaft bearings. The cylinder block includes: at least two contiguous cylinders having a dividing plane therebetween; a support web interposed between the cylinders and the crankcase for supporting the cylinders on an upper part of the crankcase, the support web including a bore for fastening screws of a seating for a crankshaft bearing; and a cooling jacket surrounding the at least two contiguous cylinders and including on each side of the two contiguous cylinders, in the dividing plane, at least one reinforcing rib having upper and lower ends and a U-shaped cross-section which defines an inner U-profile extending, at the upper end of the reinforcing rib, into an extension defining a bore for a cylinder head stud screw and extending, at the lower end of the reinforcing rib, into an extension of the bore in the support web.

Description

Die Erfindung betrifft einen Grauguß-Zylinderblock für eine Brennkraftmaschine.The invention relates to a cast iron cylinder block for an internal combustion engine.

Bei Kolbenmotoren, insbesondere Kolbenmotoren für Personenkraftfahrzeuge, ist man bestrebt, das Gewicht weitestgehend zu reduzieren. Man war daher dazu übergegangen, die Zylinderblöcke aus Leichtmetall herzustellen, was jedoch zur Folge hatte, daß zwei Materialien verwendet werden müssen, da die Laufbüchsen weiterhin aus entsprechenden Graugußqualitäten herzustellen waren.With piston engines, in particular piston engines for passenger vehicles, efforts are made to reduce the weight as much as possible. It had therefore started to manufacture the cylinder blocks from light metal, which had the consequence, however, that two materials had to be used, since the liners were still to be made from appropriate gray cast iron qualities.

Aus JP-Patents Abstracts vol. 9 No. 132 (M-385) (1855), June 7, 1985 ist ein Motorblock bekannt, der zur Erhöhung der Steifigkeit auf seiner Außenseite mit stegförmigen Rippen versehen ist, die sich bis in den Fußbereich erstrecken. Eine unmittelbare Kraftübertragung zwischen den Zylinderkopfschrauben und der Kurbelwellenlagerung erfolgt hierbei nicht.From JP Patents Abstracts vol. 9 No. 132 (M-385) (1855), June 7, 1985, an engine block is known which is provided on its outside with web-shaped ribs which extend to the foot region in order to increase the rigidity. There is no direct power transmission between the cylinder head bolts and the crankshaft bearing.

Der Erfindung liegt nun die Aufgabe zugrunde, einen Zylinderblock der eingangs bezeichneten Art als Leichtblock mit hoher Gestaltfestigkeit zu konzipieren, der aus Grauguß herstellbar ist.The invention is based on the object of designing a cylinder block of the type mentioned at the outset as a light block with high dimensional stability which can be produced from gray cast iron.

Diese Aufgabe wird erfindungsgemäß durch einen Zylinderblock mit den Merkmalen des Anspruchs 1 gelöst. Diese Ausgestaltung bewirkt, daß die zwischen dem Zylinderkopf und der Kurbelwellenlagerung wirksamen und vom Zylinderblock aufzunehmenden Kräfte in erster Linie über diese Verstärkungsrippen aufgenommen werden können, so daß alle übrigen Wandteile spürbar dünner gestaltet werden können. Das für die U-förmigen Verstärkungsrippen aufzubringende Materialgewicht ist geringer als das über eine Verringerung der Wandstärken des Kurbelgehäuseoberteils sowie des zwischen Kurbelgehäuseoberteil und Wassermantel liegenden Gehäusemantels. Vorteilhaft ist es hierbei, daß die Innenseite des U-Profils am oberen Ende in Verlängerung der Bohrungen für die Zylinderkopfschrauben verläuft. Bei Reihenmotoren endet die Innenseite des U-Profils am unteren Ende in Verlängerung der Bohrungen für die Befestigungsschrauben der Kurbelwellenlagerung. Bei V-Motoren endet das U-Profil jeweils im Bereich der Kurbelwellenlagerung. Da die Zylinderkopfschrauben einerseits und der Bereich der Kurbelwellenlagerung andererseits die im Betrieb wirkenden Kräfte in erster Linie aufzunehmen haben, ergibt sich ein definierter, geradliniger Kraftfluß zwischen Zylinderkopf und Kurbelwellenlagerung, der eine Festigkeitsberechnung mit hinreichender Genauigkeit ermöglicht, so daß bei der Bemessung der übrigen weitgehend flächigen und als Mantel dienenden Teile des Zylinderblocks die Wandstärke praktisch nur noch im Hinblick auf eine einwandfreie Gießbarkeit zu berücksichtigen ist.This object is achieved by a cylinder block with the features of claim 1. This configuration means that the forces effective between the cylinder head and the crankshaft bearing and to be absorbed by the cylinder block can be absorbed primarily via these reinforcing ribs, so that all other wall parts can be made noticeably thinner. The material weight to be applied for the U-shaped reinforcing ribs is less than that by reducing the wall thicknesses of the crankcase upper part and of the housing jacket lying between the crankcase upper part and the water jacket. It is advantageous here that the inside of the U-profile extends at the upper end in an extension of the holes for the cylinder head screws. In the case of in-line engines, the inside of the U-profile ends at the lower end in an extension of the holes for the fastening screws of the crankshaft bearing. For V engines, the U-profile ends in the area of the crankshaft bearing. Since the cylinder head bolts on the one hand and the area of the crankshaft bearing on the other hand primarily have to absorb the forces acting during operation, there is a defined, linear flow of force between the cylinder head and the crankshaft bearing, which enables a strength calculation to be carried out with sufficient accuracy so that the rest of the dimensioning is largely flat and as the jacket-serving parts of the cylinder block, the wall thickness is practically only to be taken into account with regard to perfect pourability.

In einer vorteilhaften Ausgestaltung der Erfindung ist ferner vorgesehen, daß die Verstärkungsrippen jeweils auf der Oberseite des Lagersteges für das Kurbelwellenlager bis in den Fußbereich des Zylinderblocks verlaufen. Die hierdurch bewirkte Erhöhung der Gestaltfestigkeit erlaubt ebenfalls eine entsprechende Gewichtsreduzierung.In an advantageous embodiment of the invention it is further provided that the reinforcing ribs each run on the top of the bearing web for the crankshaft bearing up to the foot region of the cylinder block. The resulting increase in structural strength also allows a corresponding weight reduction.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß in der Teilungsebene auf der Innenseite des Gehäusemantels jeweils eine an die Verstärkungsrippe des Fußbereichs anschließende Mantelrippe vorgesehen ist. Hierdurch wird bei der gegebenen Dünnwandigkeit des Gehäusemantels, insbesondere bei Reihenmotoren mit mindestens zwei Zylindern und V-Motoren, eine Aussteifung erreicht, durch die die Schwingwilligkeit dieser Mantelfläche reduziert und somit ein Dröhnen vermieden wird. Zweckmäßig weist auch die Mantelrippe ein im Querschnitt U-förmiges Profil auf.In a further embodiment of the invention it is provided that in the dividing plane on the inside of the housing shell there is a jacket rib adjoining the reinforcing rib of the foot region. In this way, with the given thin-walledness of the housing shell, in particular in the case of in-line engines with at least two cylinders and V-engines, a stiffening is achieved by means of which the lateral surface is less susceptible to oscillation and thus prevents a boom. The jacket rib also expediently has a profile which is U-shaped in cross section.

In weiterer vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß wenigstens eine der im Querschnitt U-förmigen Verstärkungsrippen zumindest im Bereich der benachbarten Zylinder mittels einer Abdeckung als geschlossener Kanal ausgebildet ist, der am oberen Ende im Bereich der Anschlußebene für den Zylinderkopf mit einer Einlaßöffnung und am unteren Ende mit einer Auslaßöffnung versehen ist und einen Ölrücklaufkanal bildet. Hierdurch ist es möglich, unter Ausnutzung der bereits vorhandenen Verstärkungsrippen, in den Zylinderblock wenigstens einen Ölrücklaufkanal zu integrieren, der aufgrund der vorhandenen Querschnitte ein großes Schluckvermögen aufweist und damit für einen schnellen Rücklauf des Schmieröls aus dem Nockenwellenbereich sorgt. Besonders vorteilhaft ist es hierbei, wenn der Ölrücklaufkanal im Bereich unterhalb der Zylinder sich als vorgegossener Kanal am Gehäusemantel fortsetzt. Hierbei ist es besonders vorteilhaft, wenn hierzu die am Gehäusemantel zu Zwecken der Versteifung vorgesehene, im Querschnitt U-förmige Mantelrippe verwendet wird, die in gleicher Weise wie die Verstärkungsrippe im Zylinderbereich benutzt wird.In a further advantageous embodiment of the invention it is provided that at least one of the cross-sectionally U-shaped reinforcing ribs is formed at least in the area of the adjacent cylinders by means of a cover as a closed channel, which at the upper end in the area of the connection plane for the cylinder head with an inlet opening and on lower end is provided with an outlet opening and forms an oil return channel. This makes it possible, using the existing reinforcing ribs, to integrate at least one oil return channel in the cylinder block, which has a large swallowing capacity due to the existing cross-sections and thus ensures a rapid return of the lubricating oil from the camshaft area. It is particularly advantageous here if the oil return duct continues in the area below the cylinders as a pre-cast duct on the housing jacket. It is particularly advantageous here if the jacket rib which is provided on the housing jacket for reinforcement purposes and which is U-shaped in cross section is used in the same way as the reinforcing rib in the cylinder area.

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

Fig. 1
eine Aufsicht auf einen Vierzylinderreihenmotor,
Fig. 2
eine Stirnansicht in Richtung des Pfeiles X in Fig. 1,
Fig. 3
einen Längsschnitt gem. der Linie III-III in Fig. 1,
Fig. 4
einen Querschnitt gem. der Linie IV-IV in Fig. 1,
Fig. 5
einen Querschnitt gem. der Linie V-V in Fig. 1,
Fig. 6
einen Horizontalschnitt gem. der Linie VI-VI in Fig. 3,
Fig. 7
eine Aufsicht auf einen Vierzylinder-Reihenmotor mit angegossenem Ölrücklaufkanal,
Fig. 8
einen Vertikalschnitt durch den Zylinderblock gem. Fig. 7 entlang der Linie VIII-VIII in Fig. 7,
Fig. 9
einen Horizontalschnitt gem. der Linie IX-IX in Fig. 3.
The invention is explained in more detail with reference to schematic drawings of an embodiment. Show it:
Fig. 1
a supervision of a four-cylinder in-line engine,
Fig. 2
3 shows an end view in the direction of arrow X in FIG. 1,
Fig. 3
a longitudinal section acc. the line III-III in Fig. 1,
Fig. 4
a cross section acc. the line IV-IV in Fig. 1,
Fig. 5
a cross section acc. the line VV in Fig. 1,
Fig. 6
a horizontal section acc. the line VI-VI in Fig. 3,
Fig. 7
a top view of a four-cylinder in-line engine with cast-on oil return channel,
Fig. 8
a vertical section through the cylinder block acc. 7 along the line VIII-VIII in Fig. 7,
Fig. 9
a horizontal section acc. the line IX-IX in FIG. 3.

Der in Fig. 1 in der Aufsicht dargestellte Zylinderblock 1 ist aus einer für Zylindergehäuse verwendeten Graugußqualität, beispielsweise Compact-Graphit-Guß (CGG) hergestellt. Die Zylinder 2 sind einstückig mit dem Zylinderblock 1 verbunden und stützen sich zusammen mit dem Wassermantel 3 auf den Lagerstegen 4 für die Kurbelwellenlager ab. Die Lagerstege 4 verlaufen schräg nach außen bis in den Fußbereich 5 des Zylinderblocks 1. Zur Abdeckung des Kurbelraumes ist ein sich über die ganze Länge des Zylinderblocks erstreckender Gehäusemantel 6 vorgesehen, der ausgehend vom Fußbereich 5 bis an das untere Ende des Wassermantels verläuft (Fig. 4).The cylinder block 1 shown in the top view in FIG. 1 is made of a gray cast iron quality used for cylinder housings, for example compact graphite cast iron (CGG). The cylinders 2 are integrally connected to the cylinder block 1 and are supported together with the water jacket 3 on the bearing webs 4 for the crankshaft bearings. The bearing webs 4 run obliquely outwards into the foot area 5 of the cylinder block 1. To cover the crank chamber, a housing jacket 6 is provided which extends over the entire length of the cylinder block and extends from the foot region 5 to the lower end of the water jacket (FIG. 4).

Um nun das Gewicht des Zylinderblocks reduzieren zu können, ist, wie aus Fig. 1 bis Fig. 5 ersichtlich, im Bereich der Teilungsebene zwischen zwei aneinandergrenzenden Zylindern 2 nur eine Verstärkungsrippe 7 statt einer Schottwand vorgesehen, die sich bis in den Bereich des Lagersteges 4 nach unten fortsetzt. Diese Verstärkungsrippe 7 ist, wie der in Fig. 1 als Ausbruch dargestellte Teilhorizontalschnitt gem. der Linie I-I in Fig. 5 erkennen läßt, im Querschnitt U-förmig ausgebildet. Die Anordnung ist hierbei so getroffen, daß die Innenseite des U-Profils am oberen Ende in Verlängerung der Bohrungen 8 für die Zylinderkopfschrauben und am unteren Ende in Verlängerung der Bohrungen 9 für die Befestigungsschrauben der Kurbelwellenlagerung verläuft. Damit bildet die Verstärkungsrippe mit ihrem U-förmigen Querschnitt einen geradlinig verlaufenden Zuggurt, durch den die zwischen dem Zylinderkopf und dem Kurbelwellenlager wirksam werdenden Kräfte unmittelbar aufgenommen werden. Dementsprechend kann die Wandstärke des Gehäusemantels 6 reduziert werden.In order to be able to reduce the weight of the cylinder block, as can be seen from FIGS. 1 to 5, only one reinforcing rib 7 is provided in the region of the parting plane between two adjacent cylinders 2 instead of a bulkhead wall, which extends into the area of the bearing web 4 continues down. This reinforcing rib 7, like the partial horizontal section shown in FIG. the line I-I in Fig. 5 reveals a U-shaped cross section. The arrangement is such that the inside of the U-profile extends at the upper end in an extension of the holes 8 for the cylinder head screws and at the lower end in an extension of the holes 9 for the fastening screws of the crankshaft bearing. The reinforcing rib with its U-shaped cross section thus forms a rectilinear tension belt through which the forces acting between the cylinder head and the crankshaft bearing are absorbed directly. Accordingly, the wall thickness of the housing shell 6 can be reduced.

Wie Fig. 4 und 5 ebenfalls erkennen lassen, ist zur weiteren Gewichtsreduzierung auch der Lagersteg 4 selbst als U-förmiges Profil ausgebildet, wobei sich das Profil nach oben hin öffnet. In gleicher Weise ist auch der Verbindungssteg 10 zwischen den beiden außenliegenden Lagerstegen 4 als nach oben offenes U-Profil ausgebildet, wie dies aus Fig. 4 und 5 ebenfalls ersichtlich ist.As can also be seen in FIGS. 4 and 5, for further weight reduction, the bearing web 4 itself is designed as a U-shaped profile, the profile opening upwards. In the same way, the connecting web 10 between the two outer bearing webs 4 is designed as an upwardly open U-profile, as can also be seen from FIGS. 4 and 5.

Um nun ein "Dröhnen" des sehr dünnwandigen Gehäusemantels weitgehend zu unterbinden, ist dieser, wie Fig. 1 erkennen läßt, jeweils im Bereich eines Zylinders nach außen ausgebaucht, so daß hier durch die gewölbte Form die Schwingwilligkeit reduziert wird. Um hier noch zu einer größeren Versteifung zu gelangen, ist es zweckmäßig, ebenfalls im Bereich der Teilungsebene den Gehäusemantel 6 mit einer Verstärkungsrippe 11 zu versehen, wie sie in Fig. 5 für die rechte Seite des Gehäusemantels gestrichelt angedeutet ist. Es kann sich hierbei um eine einfache aber auch um eine im Querschnitt U-förmige Rippe handeln.In order to largely prevent a "roar" of the very thin-walled casing, it is bulged outwards in the area of a cylinder, as can be seen in FIG. 1, so that here it is due to the curved shape the willingness to vibrate is reduced. In order to achieve greater stiffening here, it is expedient to also provide the housing jacket 6 in the region of the division plane with a reinforcing rib 11, as is indicated by dashed lines in FIG. 5 for the right side of the housing jacket. This can be a simple but also a rib with a U-shaped cross section.

Die Erfindung wurde für das Ausführungsbeispiel eines Reihenmotors erläutert. Sie läßt sich jedoch entsprechend mit ihren Vorteilen auch bei V-Motoren anwenden.The invention was explained for the embodiment of an in-line engine. However, it can also be used with its advantages for V engines.

In Fig. 7 ist wiederum in einer Aufsicht ein Zylinderblock für einen Vierzylinder-Reihenmotor dargestellt, der aus einer für Zylindergehäuse verwendeten Graugußqualität, beispielsweise mit Compact-Graphit-Guß (CGG) hergestellt ist. Der Aufbau entspricht im wesentlichen dem Aufbau des anhand von Fig. 1 beschriebenen Zylinderblocks, so daß hierauf verwiesen werden kann. Für gleiche Bauelemente sind hierbei gleiche Bezugszeichen verwendet. Im Bereich der Teilungsebene zwischen zwei aneinandergrenzenden Zylindern 2 ist auch bei dieser Ausführungsform wiederum nur eine Verstärkungsrippe 7 statt einer Schottwand vorgesehen, die sich bis in den Bereich des Lagersteges nach unten fortsetzt. Diese Verstärkungsrippen 7 sind, wie bereits anhand der Ausführungsform gem. Fig. 1 und den zugehörigen weiteren Zeichnungen beschrieben, im Querschnitt U-förmig ausgebildet. Auch hier sind die Verstärkungsrippen 7 so ausgebildet, daß sie am oberen Ende in ihrer Verlängerung in die Bohrungen 8 für die Zylinderkopfschrauben auslaufen.FIG. 7 again shows a top view of a cylinder block for a four-cylinder in-line engine, which is produced from a gray cast iron quality used for cylinder housings, for example with compact graphite cast iron (CGG). The structure corresponds essentially to the structure of the cylinder block described with reference to FIG. 1, so that reference can be made to this. The same reference numerals are used for the same components. In the area of the parting plane between two adjacent cylinders 2, only one reinforcing rib 7 is again provided in this embodiment, instead of a bulkhead, which continues down into the area of the bearing web. These reinforcing ribs 7 are, as already according to the embodiment according to. Fig. 1 and the associated further drawings described, U-shaped in cross section. Here, too, the reinforcing ribs 7 are designed such that they extend at the upper end in their extension into the bores 8 for the cylinder head screws.

In Abwandlung der Ausführungsform gem. Fig. 1 ist bei der Ausführungsform gem. Fig. 7 jedoch die Verstärkungsrippe 7.1 im Mittelbereich des Zylinderblocks mit einer Abdeckung 13 versehen, so daß diese Verstärkungsrippe 7.1 als geschlossener Kanal ausgebildet ist. Am oberen Ende ist die Abdeckung 13, wie Fig. 8 zeigt, um den Ansatz 14 für die zugehörige Bohrung 8 nach außen herumgeführt, so daß sich eine in der Anschlußebene 15 für den Zylinderkopf liegende Einlaßöffnung 16 bildet.In a modification of the embodiment according to Fig. 1 is according to the embodiment. Fig. 7, however, the reinforcing rib 7.1 in the central region of the cylinder block with a cover 13, so that this reinforcing rib 7.1 is designed as a closed channel. At the upper end, as shown in FIG. 8, the cover 13 is around the extension 14 for the associated bore 8 to the outside guided around so that an inlet opening 16 lying in the connection plane 15 for the cylinder head is formed.

Dieser durch die Abdeckung 13 gebildete geschlossene Kanal erstreckt sich bei dem dargestellten Ausführungsbeispiel, wie Fig. 8 erkennen läßt, zunächst über den vertikalen Längsbereich der Zylinder. Im Übergangsbereich zum Gehäusemantel 6 setzt sich der Kanal dann auf der Innenseite des Gehäusemantels 6 fort, wobei hierzu durch eine entsprechende Abdeckung 18 die auf der Innenseite des Gehäusemantels in diesem Bereich vorhandene Verstärkungsrippe 11 verwendet wird, die zumindest an dieser Stelle einen U-förmigen Querschnitt aufweist. Am unteren Ende, d. h. im Fußbereich 5 ist dann in ähnlicher Weise wie im Bereich der Anschlußebene 15, ein entsprechender Durchbruch vorgesehen, der eine Auslaßöffnung 19 bildet. Auf diese Weise steht ein durchgehender Kanal zur Verfügung, durch den das im Zylinderkopfbereich anfallende Öl abgeführt werden kann.This closed channel formed by the cover 13 extends in the illustrated embodiment, as can be seen in FIG. 8, initially over the vertical longitudinal region of the cylinders. In the transition area to the housing jacket 6, the channel then continues on the inside of the housing jacket 6, the reinforcement rib 11 on the inside of the housing jacket in this area being used for this purpose, which at least at this point has a U-shaped cross section having. At the bottom, i.e. H. A corresponding opening, which forms an outlet opening 19, is then provided in the foot region 5 in a manner similar to that in the region of the connection level 15. In this way, a continuous channel is available through which the oil accumulating in the cylinder head area can be discharged.

Zur Bildung dieses Ölrücklaufkanals ist es nicht erforderlich, daß im Gehäusemantel 6 Verstärkungsrippen vorgesehen sind. Es ist auch möglich, hier nur zum Zwecke der Bildung eines Rücklaufkanals einen entsprechend an den Gehäusemantel 6 angegossenen Rücklaufkanal vorzusehen, wobei dieser Ölrücklaufkanal nicht zwingend, wie in Fig. 8 dargestellt, auf der Innenseite des Gehäusemantels verlaufen muß, sondern auch im Zusammenhang mit der Umgehung der sich in Längsrichtung durch den gesamten Zylinderblock erstreckenden Druckölbohrung auf der Außenseite des Gehäusemantels 6 verlaufen kann.To form this oil return channel, it is not necessary that 6 reinforcing ribs are provided in the housing jacket. It is also possible to provide here a return channel correspondingly cast onto the housing jacket 6 only for the purpose of forming a return channel, whereby this oil return channel does not necessarily have to run on the inside of the housing jacket, as shown in FIG. 8, but also in connection with the Bypass of the pressure oil hole extending in the longitudinal direction through the entire cylinder block on the outside of the housing shell 6 can extend.

Da, wie die anhand von Fig. 1 bis 6 dargestellte Ausführungsform erkennen läßt, sich die U-förmigen Verstärkungsrippen 7 auch im Bereich des Lagersteges 4 bis zum Fußteil 5 erstrecken, besteht in Abwandlung des vorstehend beschriebenen Ausführungsbeispiels gem. Fig. 7 und 8 auch die Möglichkeit, auch diesen unteren Bereich mit einer entsprechenden Abdeckung zu versehen und so als Ölrücklaufkanal auszubilden.Since, as can be seen from the embodiment shown in FIGS. 1 to 6, the U-shaped reinforcing ribs 7 also extend in the region of the bearing web 4 to the foot part 5, there is a modification of the one described above Embodiment according. 7 and 8 also the possibility of providing this lower area with a corresponding cover and thus forming it as an oil return channel.

In Fig. 9 ist die Ausgestaltung der Verstärkungsrippen 7 einerseits und die Ausgestaltung der mittleren Verstärkungsrippe 7.1 zur Bildung eines Ölrücklaufkanals andererseits im Schnitt dargestellt.FIG. 9 shows the configuration of the reinforcing ribs 7 on the one hand and the configuration of the central reinforcing rib 7.1 to form an oil return channel on the other hand in section.

Claims (6)

  1. Cylinder block of grey cast iron for an intemal combustion engine having at least two cylinders (2) adjacent to one another which are enclosed by a water jacket (3) and which are supported on the upper part of the crankcase and where each time in the parting plane between the two cylinders (2) the outer side of the water jacket (3) has a re-inforcing rib (7) which continues each time to the region of the crankshaft bearing and which has a U-shaped cross-section, whereby the inner side of the U-profile at its upper end extends each time as an extension of the drilling (8) for the cylinder head bolts and at its lower end extends down to the drilling (9) for the fixing bolts of the crankshaft bearing at the bearing web (4).
  2. Cylinder head in accordance with Claim 1, characterised in that, the re-inforcing ribs extend each time on the upper side of the bearing web (4) down to the bottom region (5) of the cylinder block.
  3. Cylinder block in accordance with Claims 1 or 2, characterised in that, in the parting plane at the inner side of the casing (6) each time a continuation casing rib (11) is provided at the re-inforcing rib (7) of the bottom region (5).
  4. Cylinder head in accordance with one of the Claims 1 to 3, characterised in that, the casing rib (11) has a profile which is U-shaped in cross-section.
  5. Cylinder head in accordance with one of the Claims 1 to 4, characterised in that, at least one of the re-inforcing ribs (7) which are U-shaped in cross-section is designed as a closed channel by means of a cover (13) at least in the region of the neighbouring cylinders (2) whereby the closed channel is provided with an inlet opening (16) at the upper end in the region of the joining plane (15) for the cylinder head and is provided with an outlet opening (19) at the lower end, and which forms a retum channel.
  6. Cylinder head in accordance with Claim 5, characterised in that, the oil retum channel in the region of the lower half of the cylinder (2) continues as a precast channel in the casing (6).
EP93914713A 1992-09-18 1993-06-24 Cylinder block for an internal combustion engine Expired - Lifetime EP0613524B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4231284 1992-09-18
DE4231284A DE4231284A1 (en) 1992-09-18 1992-09-18 Cylinder block for an internal combustion engine
PCT/EP1993/001613 WO1994007017A1 (en) 1992-09-18 1993-06-24 Cylinder block for an internal combustion engine

Publications (2)

Publication Number Publication Date
EP0613524A1 EP0613524A1 (en) 1994-09-07
EP0613524B1 true EP0613524B1 (en) 1996-08-21

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EP93914713A Expired - Lifetime EP0613524B1 (en) 1992-09-18 1993-06-24 Cylinder block for an internal combustion engine

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US (1) US5501189A (en)
EP (1) EP0613524B1 (en)
AT (1) ATE141668T1 (en)
DE (2) DE4231284A1 (en)
ES (1) ES2091620T3 (en)
WO (1) WO1994007017A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9412637U1 (en) * 1994-08-05 1995-11-30 Bruehl Eisenwerk Cylinder block for an internal combustion engine with a water jacket made of aluminum
GB9425718D0 (en) * 1994-12-20 1995-02-22 Rover Group A block structure for an internal combustion engine
DE19540763C1 (en) * 1995-11-02 1996-12-19 Volkswagen Ag Casing for reciprocating piston engine
US5852992A (en) * 1997-11-24 1998-12-29 Ford Global Technologies, Inc. Internal combuston engine having separated cylinder head oil drains and crankcase ventilation passages
JP3999340B2 (en) * 1997-12-10 2007-10-31 ヤマハ発動機株式会社 Cylinder block structure
DE19818593C2 (en) * 1998-04-25 2000-03-30 Daimler Chrysler Ag Crankcase of an internal combustion engine
GB2338514A (en) * 1998-06-20 1999-12-22 Cummins Engine Co Ltd I.c. engine cylinder block with optimizes stiffness
JP2000136752A (en) * 1998-10-31 2000-05-16 Honda Motor Co Ltd Crankcase for multicylinder engine
US6899064B2 (en) * 2002-09-16 2005-05-31 Perkins Engines Company Limited Cylinder block for an internal combustion engine having a tapered coolant jacket
DE20314367U1 (en) * 2002-09-16 2004-03-11 Perkins Engines Co. Ltd. Engine block for IC engine has extensions each end of the cylinder block to accommodate larger cylinder bores plus water jacket extensions
JP4258339B2 (en) * 2003-10-10 2009-04-30 日産自動車株式会社 Internal combustion engine cylinder block
DE102004061684B4 (en) * 2004-12-22 2011-09-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Crankshaft bearing for an internal combustion engine
US8256092B1 (en) 2008-01-30 2012-09-04 Makino Inc. Method for helical boring
CN102705094A (en) * 2012-07-11 2012-10-03 无锡华源凯马发动机有限公司 Improved aluminum alloy single-cylinder inclined air-cooled diesel engine body
US9086031B2 (en) 2013-03-12 2015-07-21 Ford Global Technologies, Llc Cracked cap bulkhead insert

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173407A (en) * 1961-08-17 1965-03-16 Kaiser Jeep Corp Aluminum engine
DE2621348C2 (en) * 1976-05-14 1984-05-30 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Cylinder with dry, thin-walled cylinder liner for internal combustion engines
GB2073321B (en) * 1979-03-21 1983-06-08 Cummins Engine Co Inc Engine cylinder block
US4369739A (en) * 1979-05-07 1983-01-25 Nissan Motor Company, Limited Structure of a cylinder assembly for an internal combustion engine
JPS57179355A (en) * 1981-04-28 1982-11-04 Nissan Motor Co Ltd Cylinder block
DE3300924A1 (en) * 1983-01-13 1984-07-19 Volkswagenwerk Ag, 3180 Wolfsburg Device for the cooling of cylinder lands
JPS6013957A (en) * 1983-07-01 1985-01-24 Nissan Motor Co Ltd Cylinder block for internal-combustion engine
JPS6049240U (en) * 1983-09-13 1985-04-06 日産自動車株式会社 Cylinder block of boiling-cooled internal combustion engine
DE3444838C2 (en) * 1984-12-08 1986-10-30 Bayerische Motoren Werke AG, 8000 München Housing for reciprocating internal combustion engine, in particular engine block
US4771745A (en) * 1986-03-22 1988-09-20 Mitsubishi Jidosha Kogyo Kabushiki Kaishi Structure of internal combustion engine
FR2664654B1 (en) * 1990-07-11 1992-11-06 Peugeot ENGINE CYLINDER CRANKCASE WITH CRANKCASE GAS AND OIL RECYCLING CIRCUIT.
DE4027242A1 (en) * 1990-08-29 1992-03-05 Winter Fritz Eisengiesserei CYLINDER BLOCK FOR MOTOR VEHICLE ENGINES
US5148742A (en) * 1991-01-10 1992-09-22 Belgium Tool And Die Company Can coater with improved deactivator responsive to absence of a workpiece
US5188071A (en) * 1992-01-27 1993-02-23 Hyundai Motor Company Cylinder block structure

Also Published As

Publication number Publication date
DE59303503D1 (en) 1996-09-26
ATE141668T1 (en) 1996-09-15
WO1994007017A1 (en) 1994-03-31
EP0613524A1 (en) 1994-09-07
US5501189A (en) 1996-03-26
ES2091620T3 (en) 1996-11-01
DE4231284A1 (en) 1994-03-24

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