EP0695866B1 - Cylinder block for an internal combustion engine with a water jacket made of aluminium - Google Patents
Cylinder block for an internal combustion engine with a water jacket made of aluminium Download PDFInfo
- Publication number
- EP0695866B1 EP0695866B1 EP95110978A EP95110978A EP0695866B1 EP 0695866 B1 EP0695866 B1 EP 0695866B1 EP 95110978 A EP95110978 A EP 95110978A EP 95110978 A EP95110978 A EP 95110978A EP 0695866 B1 EP0695866 B1 EP 0695866B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water jacket
- cylinder block
- forming
- wall
- cast iron
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000004411 aluminium Substances 0.000 title claims abstract 5
- 238000002485 combustion reaction Methods 0.000 title description 2
- 239000000463 material Substances 0.000 claims description 12
- 229910001018 Cast iron Inorganic materials 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 5
- 229910001060 Gray iron Inorganic materials 0.000 abstract description 21
- 238000005266 casting Methods 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 description 9
- 239000002826 coolant Substances 0.000 description 4
- 239000013585 weight reducing agent Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910052902 vermiculite Inorganic materials 0.000 description 2
- 235000019354 vermiculite Nutrition 0.000 description 2
- 239000010455 vermiculite Substances 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004540 pour-on Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/108—Siamese-type cylinders, i.e. cylinders cast together
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0002—Cylinder arrangements
- F02F7/0007—Crankcases of engines with cylinders in line
-
- 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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F2001/104—Cylinders; Cylinder heads having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Definitions
- the invention relates to a cylinder block for a Piston engine.
- This Arrangement has the disadvantage that it is under pressure Coolant in the contact areas between aluminum and gray cast iron can penetrate, which limit the water jacket. A perfect seal is not possible.
- the other The disadvantage of this arrangement is that the engine occurring loads from the cast iron Transfer the storage area to the aluminum motor base must be so that there is a change in the flow of force. As a result, the part forming the motor foot very massive with regard to the application of force must be made so that by the use of aluminum existing benefits are only exploited to a small extent can be.
- the invention is based on the object of a cylinder block cast iron of the type described above to further reduce its weight without this the structural strength is reduced.
- a cylinder block with the features specified in claim 1 While at a cylinder block, which is made entirely of gray cast iron, for example made of vermiculite, a wall thickness less than 4 mm casting reasons is not possible, therefore no further weight loss by reducing the Wall thicknesses is possible, the invention offers Cylinder block the advantage that by the engine operation still loaded parts made of gray cast iron in the form of a Base blocks including the motor foot are manufactured and that afterwards the application of appropriate core parts of this basic block at least in the area of the liner with a water jacket trained casing made of cast aluminum in a second casting step is provided. This has the Advantage that the power flow between the cylinder head and Motor foot still fully over the gray cast iron runs.
- the liner and the associated crankshaft bearing mount as well as the motor base are integral made of gray cast iron.
- the weight loss versus The known motor designs are achieved that the parts forming the casing, primarily the Water jacket that can only withstand the pressure of the cooling medium then also with wall thicknesses between 2 mm and 3 mm but can be made of aluminum, which results in a significant weight reduction.
- the jacket can also extend over the area of the cylinder block, which in the Area of the crankshaft bearing mount the housing wall forms for the crankcase, so that here too the desired Weight reduction is achieved.
- Another advantage of the cylinder block according to the invention is that for the liners very much for the friction behavior much cheaper gray cast iron material is available.
- the basic block at least in the transition area between Liner and crankshaft bearing mount on the outside with at least one extending in the crank axis direction web-shaped elevation and / or groove-shaped depression is provided.
- This configuration offers the advantage that not only a positive anchoring between the aluminum casing and the gray cast iron base block is created, but beyond it arises a labyrinth-like seal, so that a passage a liquid medium through this area limited space, be it cooling water or oil becomes.
- the transition area between the liner and crankshaft bearing mounting, the lower one Area of the base block with one that forms the crankcase Housing wall made of cast aluminum is provided.
- this housing wall integrally is connected to the water jacket.
- this housing wall in the casting process is made, it is possible on the outside and / or Corresponding ribs to be provided on the inside without significant increase in weight to stiffen the Lead housing wall, so that vibration and / or Roaring symptoms are prevented. It is useful if the housing wall extends into the motor base and embraces it. This creates a positive connection between the motor base belonging to the base block made of gray cast iron and the casing made of aluminum on the other hand reached so that any existing from the cooling process residual stresses resulting from the casting process lead to a lifting of the casing in this area.
- Fig. 1 is a vertical cross section through a Cylinder block shown for a multi-cylinder in-line engine. The cut is made transversely to the crankshaft axis.
- the Cylinder block consists essentially of a cast iron, for example vermiculite (GGV) cast basic block 1, the one in the material closure, d. H. also made of gray cast iron, the liners 2 and between two adjacent Liner 2 bar-shaped crankshaft bearing mounts 3, which has web-shaped supports 4 each run into the motor base 5.
- This basic block 1 is with a casing 6 made of cast aluminum provided on the base block 1 in a second casting process according to the arrangement of appropriate cores is.
- the casing 6 is the liner 2 in it immediately surrounding area as a water jacket 7 educated.
- the part of the casing forming the water jacket 7 6 double-walled so that the inner wall 8th the part delimiting the water-carrying cavity 9 the jacket directly to the outer surface of the liner 2 abuts, while the outer wall 10 the cavity delimited to the outside.
- the casing settles 6 as the housing wall 11, the lower, the Crankcase defining area closes to the outside.
- the basic block 1 In the transition area 12 between the water jacket 7 and the housing wall 11 is the basic block 1 with a longitudinal arrangement 13 of rib-shaped webs and / or groove-shaped depressions provided when Pour on the casing 6 in this area a positive Connection between basic block 1 and casing 6 form.
- the housing wall 11 is around the area of the motor base led around the motor foot to the sole area, so that here too the casing 6 is positively connected is.
- Fig. 2 shows a vertical parallel to Fig. 1 Cross section through the cylinder block, which, like the horizontal section acc.
- Fig. 3 shows led through the area is in which two liners adjoin each other.
- elements already described are the same 2, so that on the Description of Fig. 1 can be referenced.
- the cylinder head 16, indicated only schematically, is over Turnbuckles 17, which are shown here only by their central axis are indicated, clamped directly to the basic block 1.
- the casing 6 has, as the section shows, in this Area an interruption on either already when casting is taken into account, as shown, or else afterwards when drilling the threaded holes 18 is generated for receiving the clamping screws 17.
- the area of the transverse openings 14 and 15 is in the Fig. 2 marked by the line III-III horizontal section shown in Fig. 3. 3 is however only the liner 2 and the water jacket 7 in the drawing fully illustrated while the rest Parts of the basic block 3 are only indicated.
- Fig. 4 shows a vertical longitudinal section accordingly the line IV-IV in Fig. 3 and also only by the area of the liners 2 with the associated water jacket 7.
- the course of the through the transverse openings 14th and 15 transverse webs formed in the upper area of the liner 2 can also be seen here.
Abstract
Description
Die Erfindung betrifft einen Zylinderblock für einen Kolbenmotor.The invention relates to a cylinder block for a Piston engine.
Bei Kolbenmotoren, insbesondere Kolbenmotoren für Personenkraftfahrzeuge, ist man bestrebt, das Gewicht weitestgehend zu reduzieren. Man war daher dazu übergegangen, die Zylinderblöcke aus Leichmetall herzustellen, was jedoch zur Folge hatte, daß zwei Materialien verwendet werden müssen, da die Laufbüchsen weiterhin aus entsprechenden Graugußqualitäten herzustellen waren.For piston engines, especially piston engines for passenger vehicles, one strives to keep the weight as large as possible to reduce. The cylinder blocks had therefore been adopted to manufacture from light metal, which however results had to use two materials since the liners continue to be made of appropriate gray cast iron were to be produced.
Aus DE-A-42 31 284 ist ein Zylinderblock aus Grauguß bekannt, der konstruktiv so gestaltet ist, daß einerseits eine Gewichtsreduzierung gegeben ist, andererseits eine hohe Gestaltfestigkeit gewährleistet wird, was insbesondere dadurch erreicht wird, daß jeweils auf den beiden Außenseiten des Wassermantels zwischen je zwei Zylindern eine im Querschnitt U-förmige Verstärkungsrippe vorhanden ist, die sich bis in den Bereich der Kurbelwellenlageraufnahme erstreckt, so 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.From DE-A-42 31 284 is a cylinder block made of gray cast iron known, which is designed so that on the one hand there is a weight reduction, on the other hand one high dimensional stability is guaranteed, which in particular is achieved in that on the two outer sides of the water jacket between two cylinders one cross-section U-shaped reinforcing rib available is, which extends into the area of the crankshaft bearing mount extends so that between the cylinder head and the crankshaft bearing effective and from the cylinder block forces to be absorbed primarily through this Reinforcing ribs can be included, so that all other wall parts are made noticeably thinner can.
Aus EP-A-0 184 425 ist es bekannt, einen Zylinderblock für einen Kolbenmotor vollständig aus Aluminium herzustellen, wobei der Wassermantel doppelwandig ausgebildet ist und wobei anschließend in den vom Wassermantel umschlossenen Bereich jeweils einzelne Zylinderlaufbüchsen aus Grauguß eingesetzt sind.From EP-A-0 184 425 it is known to produce a cylinder block for one Piston engine made entirely of aluminum, whereby the water jacket is double-walled and then in the area enclosed by the water jacket individual cylinder liners made of gray cast iron are used are.
Aus EP-A-O 554 575 ist eine Abwandlung bekannt, bei der der Zylinderblock teilweise aus Aluminium und teilweise aus Grauguß hergestellt ist und zwar in der Weise, daß für einen Reihenmotor die Zylinderlaufbüchsen blockartig zusammengefaßt sind und mit den ebenfalls aus Grauguß hergestellten Lagerstegen einstückig verbunden sind. Um diesen Teilblock wird in einem zweiten Verfahrensschritt eine Ummantelung aus Aluminium gegossen, die einerseits den Motorfuß bildet und die andererseits den Bereich der Zylinderlaufbüchsen als Wassermantel umschließt. Die Anordnung ist hierbei so getroffen, daß die Außenwand des Wassermantels aus Aluminium besteht, während die Innenwandung des Wassermantels durch die aus Grauguß hergestellten Bereiche der Zylinderlaufbüchse gebildet werden. Diese Anordnung weist den Nachteil auf, daß das unter Druck stehende Kühlmittel in die Berührungsbereiche zwischen Aluminium und Grauguß eindringen kann, die den Wassermantel begrenzen. Eine einwandfreie Abdichtung ist nicht möglich. Der weitere Nachteil dieser Anordnung besteht darin, daß die im Motorbetrieb auftretenden Belastungen von dem aus Grauguß bestehenden Lagerbereich auf den aus Aluminium bestehenden Motorfuß übertragen werden müssen, so daß hier ein Wechsel im Kraftfluß erfolgt. Dies hat zur Folge, daß der den Motorfuß bildende Teil mit Rücksicht auf die Krafteinleitung sehr massiv ausgebildet werden muß, so daß die durch die Verwendung von Aluminium an sich bestehenden Vorteile nur in geringen Maße ausgeschöpft werden können.From EP-A-0 554 575 a modification is known in which the Cylinder block partly made of aluminum and partly made of cast iron is manufactured in such a way that for a series engine the cylinder liners are combined in blocks are and with the bearing bars also made of gray cast iron are connected in one piece. This sub-block is in one second step is a casing made of aluminum cast, which on the one hand forms the motor foot and on the other hand encloses the area of the cylinder liners as a water jacket. The arrangement is such that the outer wall of the water jacket is made of aluminum, while the Inner wall of the water jacket through those made of gray cast iron Areas of the cylinder liner are formed. This Arrangement has the disadvantage that it is under pressure Coolant in the contact areas between aluminum and gray cast iron can penetrate, which limit the water jacket. A perfect seal is not possible. The other The disadvantage of this arrangement is that the engine occurring loads from the cast iron Transfer the storage area to the aluminum motor base must be so that there is a change in the flow of force. As a result, the part forming the motor foot very massive with regard to the application of force must be made so that by the use of aluminum existing benefits are only exploited to a small extent can be.
Der Erfindung liegt nun die Aufgabe zugrunde, einen Zylinderblock aus Grauguß der vorstehend bezeichneten Art in seinem Gewicht weiter zu reduzieren, ohne daß hierbei die Gestaltfestigkeit vermindert wird. The invention is based on the object of a cylinder block cast iron of the type described above to further reduce its weight without this the structural strength is reduced.
Diese Aufgabe wird erfindungsgemäß gelöst durch einen Zylinderblock mit den im Anspruch 1 angegebenen merkmalen Während bei einem Zylinderblock, der vollständig aus Grauguß hergestellt ist, beispielsweise aus Vermiculit, eine geringere Wandstärke als 4 mm aus gießtechnischen Gründen nicht möglich ist, somit also keine weitere Gewichtsminderung durch Verminderung der Wandstärken möglich ist, bietet der erfindungsgemäße Zylinderblock den Vorteil, daß die durch den Motorbetrieb belasteten Teile weiterhin aus Grauguß in Form eines Grundblocks einschließlich des Motorfusses hergestellt werden und daß anschließend nach dem Aufbringen entsprechender Kernteile dieser Grundblock zumindest im Bereich der Laufbüchse mit einer als Wassermantel ausgebildeten Ummantelung aus Aluminiumguß in einem zweiten Gießschritt versehen wird. Dies hat den Vorteil, daß der Kraftfluß zwischen Zylinderkopf und Motorfuß weiterhin in vollem Umfang über das Graugußteil verläuft. Die Laufbüchse und die zugehörigen Kurbelwellenlageraufnahme sowie der Motorfuß sind einstückig-stoffschlüssig aus Grauguß hergestellt. Die Gewichtsreduzierung gegenüber den vorbekannten Motorbauformen wird dadurch erreicht, daß die die Ummantelung bildenden Teile, in erster Linie der Wassermantel, der nur dem Druck des Kühlmediums zu widerstehen hat, dann ebenfalls mit Wandstärken zwischen 2 mm und 3 mm aber aus Aluminium hergestellt werden können, wodurch sich eine erhebliche Gewichtsreduzierung ergibt. Neben dem Wassermantel kann die Ummantelung sich auch über den Bereich des Zylinderblocks erstrecken, der im Bereich der Kurbelwellenlageraufnahme die Gehäusewandung für das Kurbelgehäuse bildet, so daß auch hier die gewünschte Gewichtsreduzierung erreicht wird. Ein weiterer Vorteil des erfindungsgemäßen Zylinderblocks besteht darin, daß für die Laufbüchsen der für das Reibungsverhalten sehr viel günstigere Grauguß-Werkstoff zur Verfügung steht.This object is achieved by a cylinder block with the features specified in claim 1 While at a cylinder block, which is made entirely of gray cast iron, for example made of vermiculite, a wall thickness less than 4 mm casting reasons is not possible, therefore no further weight loss by reducing the Wall thicknesses is possible, the invention offers Cylinder block the advantage that by the engine operation still loaded parts made of gray cast iron in the form of a Base blocks including the motor foot are manufactured and that afterwards the application of appropriate core parts of this basic block at least in the area of the liner with a water jacket trained casing made of cast aluminum in a second casting step is provided. This has the Advantage that the power flow between the cylinder head and Motor foot still fully over the gray cast iron runs. The liner and the associated crankshaft bearing mount as well as the motor base are integral made of gray cast iron. The weight loss versus The known motor designs are achieved that the parts forming the casing, primarily the Water jacket that can only withstand the pressure of the cooling medium then also with wall thicknesses between 2 mm and 3 mm but can be made of aluminum, which results in a significant weight reduction. In addition to the water jacket, the jacket can also extend over the area of the cylinder block, which in the Area of the crankshaft bearing mount the housing wall forms for the crankcase, so that here too the desired Weight reduction is achieved. Another advantage of the cylinder block according to the invention is that for the liners very much for the friction behavior much cheaper gray cast iron material is available.
Dadurch, daß die Ummantelung durch einen Gießvorgang mit dem aus Grauguß bestehenden Grundblock verbunden wird, ergibt sich bei entsprechender Temperaturführung beim Gießvorgang eine einwandfreie dichte Verbindung zwischen der Aluminium-Ummantelung einerseits und dem Grauguß-Grundblock andererseits.The fact that the casing by a casting process connected to the base block made of gray cast iron with appropriate temperature control a perfect tight connection during the casting process between the aluminum casing on the one hand and the Gray cast iron base block on the other hand.
Dadurch, daß der den Wassermantel bildende Teil der Ummantelung in seinen wasserführenden Teilen doppelwandig ausgebildet ist, wobei der die Innenwandung bildende Teil unmittelbar an der Laufbüchse anliegt und der die Außenwand bildende Teil mit Abstand hierzu verläuft, ergibt sich der Vorteil, daß das unter Druck stehende Kühlmedium nicht in Grenzbereiche zwischen der Aluminium-Ummantelung und dem Grauguß-Grundblock eindringen kann, so daß hier Abdichtungsprobleme von vorne herein vermieden sind. Das unter Druck stehende Kühlmedium wird ausschließlich bis in den Bereich der Zu- und Abläufe von in sich geschlossenen Wandungen aus Alumiumguß begrenzt.The fact that the part of the water jacket Double-walled casing in its water-carrying parts is formed, the one forming the inner wall Part lies directly on the liner and the Part forming the outer wall runs at a distance from this, there is the advantage that this is under pressure standing cooling medium not in the border areas between the Aluminum casing and the gray cast iron base block penetrate can, so that sealing problems from the outset are avoided. The pressurized cooling medium will exclusively up to the area of the inflows and outflows bounded by self-contained walls made of cast aluminum.
In vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß bei der Anordnung von wenigstens zwei Zylindern in dem Bereich, in dem die Zylinder aneinandergrenzen, im Graugußmaterial wenigstens eine Queröffnung angeordnet ist, die vom Aluminiummaterial des Wassermantels durchsetzt ist. Diese Ausgestaltung hat zum einen den Vorteil, daß auch zwischen den beiden Zylindern die am Grundblock anliegenden Wandungen des Wassermantels stoffschlüssig miteinander verbunden sind und damit eine innenliegende Verankerung dieses Teils der Ummantelung gebildet wird. Ein weiterer Vorteil dieser Ausgestaltung besteht darin, daß infolge der besseren Wärmeleitfähigkeit auch aus dem Bereich, in dem die beiden Zylinder bzw. Laufbüchsen unmittelbar aneinanderliegen, über das die Queröffnung durchsetztende Aluminiummaterials eine zusätzliche Wärmeabfuhr erfolgt und damit die Kühlwirkung in diesem ansonsten kaum kühlbaren Bereich verbessert wird. Zweckmäßig ist es hierbei, wenn die Queröffnung eine schlitzförmige Kontur aufweist.In an advantageous embodiment of the invention it is provided that in the arrangement of at least two cylinders in the area where the cylinders are adjacent, at least one transverse opening in the gray cast iron material is arranged by the aluminum material of the water jacket is enforced. On the one hand, this configuration has the advantage that the between the two cylinders walls of the water jacket adjacent to the base block are cohesively connected and thus a internal anchoring of this part of the casing is formed. Another advantage of this design is that due to the better thermal conductivity also from the area in which the two cylinders or Liner sleeves lie directly against each other, through which the An additional material penetrating the transverse opening Heat dissipation takes place and thus the cooling effect in this otherwise hardly coolable area is improved. It is useful if the transverse opening is a has slit-shaped contour.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß der Grundblock zumindest im Ubergangsbereich zwischen Laufbüchse und Kurbelwellenlageraufnahme auf seiner Außenseite mit wenigstens einer in Kurbelachsrichtung verlaufenden stegförmigen Erhöhung und/oder nutförmigen Vertiefung versehen ist. Diese Ausgestaltung bietet den Vorteil, daß nicht nur eine formschlüssige Verankerung zwischen der Aluminium-Ummantelung und dem Grauguß-Grundblock geschaffen wird, sondern darüber hinaus entsteht hierdurch eine labyrinthartige Abdichtung, so daß ein Durchtritt eines flüssigen Mediums des jeweils durch diesen Bereich abgegrenzten Raums, sei es Kühlwasser, sei es Öl, vermieden wird.In a further embodiment of the invention, that the basic block at least in the transition area between Liner and crankshaft bearing mount on the outside with at least one extending in the crank axis direction web-shaped elevation and / or groove-shaped depression is provided. This configuration offers the advantage that not only a positive anchoring between the aluminum casing and the gray cast iron base block is created, but beyond it arises a labyrinth-like seal, so that a passage a liquid medium through this area limited space, be it cooling water or oil becomes.
In zweckmäßiger weiterer Ausgestaltung der Erfindung ist vorgesehen, daß vom Übergangsbereich zwischen Laufbüchse und Kurbelwellenlageraufnahme ausgehend, der untere Bereich des Grundblocks mit einer das Kurbelgehäuse bildenden Gehäusewandung aus Aluminiumguß versehen ist. Hierbei ist es zweckmäßig, wenn diese Gehäusewandung stoffschlüssig mit dem Wassermantel verbunden ist. Dadurch, daß eine die Kurbelwellen nach außen abschirmende Gehäusewandung anstelle von Grauguß aus Aluminiumguß hergestellt ist, ergibt sich eine weitere Möglichkeit für eine Gewichtsreduzierung, zumal die Gehäusewandung selbst keine tragenden Funktionen besitzt. Da aus gießtechnischen Gründen bei der Herstellung aus Grauguß keine geringere Wandstärke herstellbar ist, ergibt sich durch den erfindungsgemäßen "Materialaustausch" eine weitere deutliche Gewichtsverminderung. Dadurch, daß diese Gehäusewandung im Gießverfahren hergestellt wird, ist es möglich, auf der Außen- und/oder Innenseite entsprechende.Rippen vorzusehen, die ohne nennenswerte Gewichtserhöhung zu einer Versteifung der Gehäusewandung führen, so daß hier Vibrations- und/oder Dröhnerscheinungen unterbunden sind. Zweckmäßig ist es, wenn die Gehäusewandung sich bis in den Motorfuß erstreckt und diesen umgreift. Hierdurch wird ein Formschluß zwischen dem zum Grundblock aus Grauguß gehörenden Motorfuß einerseits und der aus Aluminium bestehenden Ummantelung andererseits erreicht, so daß etwa vorhandene, aus dem Abkühlungsprozeß des Gießvorganges herrührende Restspannungen nicht zu einem Abheben der Ummantelung in diesem Bereich führen.In an expedient further embodiment of the invention it is intended that the transition area between the liner and crankshaft bearing mounting, the lower one Area of the base block with one that forms the crankcase Housing wall made of cast aluminum is provided. Here it is expedient if this housing wall integrally is connected to the water jacket. The fact that a the crankshaft shielding the housing wall from the outside made of cast aluminum instead of gray cast iron there is another way to reduce weight, especially since the housing itself is not load-bearing Has functions. As for casting reasons no less wall thickness when manufactured from gray cast iron can be produced, results from the invention "Material exchange" another significant weight reduction. The fact that this housing wall in the casting process is made, it is possible on the outside and / or Corresponding ribs to be provided on the inside without significant increase in weight to stiffen the Lead housing wall, so that vibration and / or Roaring symptoms are prevented. It is useful if the housing wall extends into the motor base and embraces it. This creates a positive connection between the motor base belonging to the base block made of gray cast iron and the casing made of aluminum on the other hand reached so that any existing from the cooling process residual stresses resulting from the casting process lead to a lifting of the casing in this area.
Die Erfindung wird anhand schematischer Zeichnungen eines Ausführungsbeispieles näher erläutert. Es zeigen:
- Fig. 1
- einen vertikalen Querschnitt durch einen Zylinderblock im Bereich der Laufbüchse,
- Fig. 2
- einen vertikalen Querschnitt durch einen Zylinderblock um Bereich zweier aneinandergrenzender Laufbüchsen,
- Fig. 3
- einen Horizontalschnitt gem. der Linie III-III in Fig. 1,
- Fig. 4
- einen Vertikalschnitt gem. der Linie IV-IV in Fig. Fig. 3.
- Fig. 1
- a vertical cross section through a cylinder block in the area of the liner,
- Fig. 2
- a vertical cross section through a cylinder block around the area of two adjacent liners,
- Fig. 3
- a horizontal section acc. the line III-III in Fig. 1,
- Fig. 4
- a vertical section acc. the line IV-IV in FIG. 3.
In Fig. 1 ist ein vertikaler Querschnitt durch einen
Zylinderblock für einen Mehrzylinder-Reihenmotor dargestellt.
Der Schnitt ist quer zur Kurbelwellenachse geführt. Der
Zylinderblock besteht im wesentlichen aus einem aus Grauguß,
beispielsweise Vermiculit (GGV) gegossenen Grundblock 1,
der im Stoffschluß, d. h. also ebenfalls aus Grauguß,
die Laufbüchsen 2 sowie die jeweils zwischen zwei benachbarten
Laufbüchsen 2 stegförmig ausgebildeten Kurbelwellenlageraufnahmen
3 aufweist, die über stegförmige Abstützungen
4 jeweils in den Motorfuß 5 auslaufen. Dieser Grundblock
1 ist mit einer Ummantelung 6 aus Aluminiumguß
versehen, die auf den Grundblock 1 in einem zweiten Gießverfahren
nach Anordnung entsprechender Kerne aufgegossen
ist. Die Ummantelung 6 ist in ihrem die Laufbüchse 2
unmittelbar umschließenden Bereich als Wassermantel 7
ausgebildet. Bei dem dargestellten Ausführungsbeispiel
ist der den Wassermantel 7 bildende Teil der Ummantelung
6 doppelwandig ausgebildet, so daß die Innenwandung 8
des den wasserführenden Hohlraum 9 begrenzenden Teils
der Ummantelung unmittelbar an die Außenfläche der Laufbüchse
2 anliegt, während die Außenwandung 10 den Hohlraum
nach außen abgrenzt.In Fig. 1 is a vertical cross section through a
Cylinder block shown for a multi-cylinder in-line engine.
The cut is made transversely to the crankshaft axis. Of the
Cylinder block consists essentially of a cast iron,
for example vermiculite (GGV) cast basic block 1,
the one in the material closure, d. H. also made of gray cast iron,
the
Am unteren Ende des Wassermantels 7 setzt sich die Ummantelung
6 als Gehäusewandung 11 fort, die den unteren, das
Kurbelgehäuse definierenden Bereich nach außen abschließt.At the lower end of the
Im Übergangsbereich 12 zwischen dem Wassermantel 7 und
der Gehäusewandung 11 ist der Grundblock 1 mit einer
längslaufenden Anordnung 13 von rippenförmigen Stegen
und/oder nutenförmigen Vertiefungen versehen, die beim
Aufgießen der Ummantelung 6 in diesem Bereich eine formschlüssige
Verbindung zwischen Grundblock 1 und Ummantelung 6
bilden. Um Bereich des Motorfußes ist die Gehäusewandung 11
um den Motorfuß herum bis in den Sohlenbereich geführt,
so daß auch hier die Ummantelung 6 formschlüssig verbunden
ist.In the
Fig. 2 zeigt einen parallel zu Fig. 1 geführten vertikalen Querschnitt durch den Zylinderblock, der, wie der Horizontalschnitt gem. Fig. 3 zeigt, durch den Bereich geführt ist, in dem zwei Laufbüchsen aneinandergrenzen. Die in Fig. 1 bereits beschriebenen Elemente sind mit den gleichen Bezugszeichen in Fig. 2 gekennzeichnet, so daß auf die Beschreibung zu Fig. 1 verwiesen werden kann.Fig. 2 shows a vertical parallel to Fig. 1 Cross section through the cylinder block, which, like the horizontal section acc. Fig. 3 shows led through the area is in which two liners adjoin each other. In the Fig. 1 elements already described are the same 2, so that on the Description of Fig. 1 can be referenced.
Wie der Vertikalschnitt gem. Fig. 2 zeigt, ist der schmale
Verbindungsbereich des Grundblocks zwischen zwei unmittelbar
aneinandergrenzenden Laufbüchsen bei dem dargestellten
Ausführungsbeispiel durch zwei schmale, schlitzförmige
Queröffnungen 14 und 15 durchbrochen, die dem oberen
Bereich der den Zylinder bildenden Laufbüchse zugeordnet
sind. Beim Umgießen des Grundblockes 3 mit der Aluminium-Ummantelung
6 fließt hier der Aluminiumwerkstoff durch
die schlitzförmigen Queröffnungen 14, 15 hindurch, so
daß die einander zugekehrten Innenwandungen 8 in diesem
Bereich stoffschlüssig miteinander verbunden und damit
auch am Grundblock 1 festgelegt sind. Der weitere Vorteil
dieser Anordnung besteht darin, daß über die so gebildeten
Querstege aus Aluminium aus diesem Bereich, der dem Verbrennungsraum
des von der Laufbüchse 2 gebildeten Zylinders
benachbart ist, aufgrund der besseren Wärmeleitfähigkeit
des Aluminiumwerkstoffs eine bessere Wärmeabfuhr
in den Wassermantel 7 bewirkt wird.How the vertical section acc. Fig. 2 shows is the narrow one
Connection area of the basic block between two immediately
adjacent liners in the illustrated
Embodiment by two narrow, slit-shaped
Der nur schematisch angedeutete Zylinderkopf 16 ist über
Spannschrauben 17, die hier nur durch ihre Mittelachse
angedeutet sind, unmittelbar mit dem Grundblock 1 verspannt.
Die Ummantelung 6 weist, wie der Schnitt zeigt, in diesem
Bereich eine Unterbrechung auf, die entweder bereits
beim Guß berücksichtigt ist, wie dargestellt, oder aber
die nachträglich beim Bohren der Gewindebohrungen 18
zur Aufnahme der Spannschrauben 17 erzeugt wird.The
Der Bereich der Queröffnungen 14 und 15 ist in dem in
Fig. 2 durch die Linie III-III gekennzeichneten Horizontalschnitt
in Fig. 3 dargestellt. In Fig. 3 ist jedoch
lediglich die Laufbüchse 2 sowie der Wassermantel 7 zeichnerisch
vollständig dargestellt, während die restlichen
Teile des Grundblocks 3 nur angedeutet sind.The area of the
Fig. 4 zeigt einen Vertikal-Längsschnitt entsprechend
der Linie IV-IV in Fig. 3 und zwar ebenfalls nur durch
den Bereich der Laufbüchsen 2 mit dem zugehörigen Wassermantel
7. Der Verlauf der durch die Queröffnungen 14
und 15 gebildeten Querstege im oberen Bereich der Laufbüchse
2 ist hier ebenfalls ersichtlich.Fig. 4 shows a vertical longitudinal section accordingly
the line IV-IV in Fig. 3 and also only by
the area of the
Claims (7)
- A cylinder block for a reciprocating engine with at least one cylinder, which has a base block (1) formed from the bushing (2), the crankshaft bearing mounting (3) and the engine mount, which is produced in one piece of the same material from cast iron, and with a casing (6) of aluminium constructed as a water jacket (7) in the region of the bushing (2), which casing (6) is connected thereby with the base block manufactured from cast iron, and the part of which, forming the water jacket (7), is constructed with double walls in its water-carrying parts, the part of the water jacket (7) forming the inner wall (8) lying directly against the bushing (2) and the part forming the outer wall (10) of the water jacket (7) running at a distance therefrom.
- The cylinder block according to Claim 1, characterised in that with the arrangement of at least two cylinders in the region in which the bushings (2) forming the cylinders adjoin each other, at least one transverse opening (14, 15) is arranged, which is penetrated by the aluminium material of the water jacket (7).
- The cylinder block according to Claim 1 or 2, characterised in that the transverse openings (14, 15) have a slit-shaped contour.
- The cylinder block according to one of Claims 1 to 3, characteriscd in that the base block (1) at least in the transition region (12) between the bushing (2) and the crankshaft bearing mounting (3) is provided on its exterior with at least one crosspiece-shaped prominence and/or groove-shaped depression (13) running in the crankshaft direction.
- The cylinder block according to onc of Claims 1 to 4, characterised in that starting from the transition region (12) between bushing (2) and crankshaft bearing mounting (3), the lower region of the base block (1) is provided with a housing wall (11) of cast aluminium forming the crankcase.
- The cylinder block according to one of Claims 1 to 5, characterised in that the housing wall (11) is connected with the water jacket (7) being of the same material.
- The cylinder block according to one of Claims 1 to 6, characterised in that the housing wall (11) extends up to the engine mount (5) and embraces it.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9412637U DE9412637U1 (en) | 1994-08-05 | 1994-08-05 | Cylinder block for an internal combustion engine with a water jacket made of aluminum |
| DE9412637U | 1994-08-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0695866A1 EP0695866A1 (en) | 1996-02-07 |
| EP0695866B1 true EP0695866B1 (en) | 1998-04-01 |
Family
ID=6912039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95110978A Expired - Lifetime EP0695866B1 (en) | 1994-08-05 | 1995-07-13 | Cylinder block for an internal combustion engine with a water jacket made of aluminium |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5562073A (en) |
| EP (1) | EP0695866B1 (en) |
| AT (1) | ATE164659T1 (en) |
| DE (2) | DE9412637U1 (en) |
| ES (1) | ES2117332T3 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9425716D0 (en) * | 1994-12-20 | 1995-02-22 | Rover Group | An internal combustion engine |
| JPH10122034A (en) * | 1996-10-16 | 1998-05-12 | Toyota Motor Corp | Cylinder block for internal combustion engine and manufacture thereof |
| DE19810464C1 (en) | 1998-03-11 | 1999-06-02 | Daimler Chrysler Ag | Crankcase for internal combustion engine |
| DE19848649C5 (en) | 1998-10-22 | 2008-11-27 | Peter Greiner | Carbon piston for an internal combustion engine |
| DE19912692C2 (en) * | 1999-03-20 | 2000-12-28 | Honsel Ag | Cylinder block for a piston engine |
| JP2001164985A (en) | 1999-09-28 | 2001-06-19 | Kubota Corp | Cylinder block of multi-cylinder engine and casting method for same |
| US6318330B1 (en) * | 2000-10-11 | 2001-11-20 | Dana Corporation | Dual phase graphite cylinder liner and method of making the same |
| US6988480B2 (en) * | 2002-09-16 | 2006-01-24 | Caterpillar Inc. | Cylinder block for an internal combustion engine having a locally thickened end wall |
| DE10339573B4 (en) * | 2003-08-28 | 2006-07-27 | Audi Ag | cylinder housing |
| JP4306461B2 (en) * | 2004-01-14 | 2009-08-05 | トヨタ自動車株式会社 | Cylinder block fastening structure and engine body provided with the same |
| JP4241627B2 (en) * | 2005-01-14 | 2009-03-18 | 富士重工業株式会社 | Cylinder liner and cylinder block |
| US7509936B2 (en) * | 2006-07-14 | 2009-03-31 | Engineered Propulsion Systems, Inc. | Engine with hybrid crankcase |
| DE102007041010A1 (en) * | 2007-08-29 | 2009-03-05 | Mahle International Gmbh | Cylinder crankcase for an internal combustion engine |
| IN2014MN00741A (en) | 2011-10-05 | 2015-07-03 | Engineered Propulsion Systems Inc | |
| FR3011883B1 (en) * | 2013-10-15 | 2018-08-31 | Renault S.A.S. | "MOTOR BLOCK OF MOTOR VEHICLE" |
| US9950449B2 (en) * | 2015-03-02 | 2018-04-24 | Ford Global Technologies, Llc | Process and tool for forming a vehicle component |
| BR112020001304A2 (en) | 2017-07-21 | 2020-07-28 | Engineered Propulsion Systems, Inc. | improved aeronautical diesel engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4419801A (en) * | 1980-01-19 | 1983-12-13 | Toyo Kogyo Co., Ltd. | Method for manufacturing a cast iron cylinder block |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5710438U (en) * | 1980-06-21 | 1982-01-20 | ||
| CA1256265A (en) * | 1984-11-09 | 1989-06-27 | Akio Kawase | Process for manufacturing siamese-type cylinder block |
| CA1324298C (en) * | 1984-12-03 | 1993-11-16 | Takeo Arai | Closed-deck cylinder block for water-cooled internal combustion engine |
| US4938183A (en) * | 1987-12-24 | 1990-07-03 | Ford Motor Company | Method of making and apparatus for monoblock engine construction |
| JPH071023B2 (en) * | 1988-10-14 | 1995-01-11 | いすゞ自動車株式会社 | Cylinder liner for internal combustion engine |
| EP0554575B1 (en) * | 1992-01-06 | 1997-03-19 | Honda Giken Kogyo Kabushiki Kaisha | Cylinder block |
| DE4231284A1 (en) | 1992-09-18 | 1994-03-24 | Bruehl Eisenwerk | Cylinder block for an internal combustion engine |
| DE4306269A1 (en) * | 1993-03-01 | 1994-02-24 | Daimler Benz Ag | Divided housing for piston-engine - has wall enclosing coolant chamber and level with cylinder top end-faces and joined by internal flange to flange on cylinder-block |
| KR100223084B1 (en) * | 1993-09-14 | 1999-10-15 | 정몽규 | The structure of cylinder block with ladder frame |
-
1994
- 1994-08-05 DE DE9412637U patent/DE9412637U1/en not_active Expired - Lifetime
-
1995
- 1995-07-13 DE DE59501756T patent/DE59501756D1/en not_active Expired - Fee Related
- 1995-07-13 AT AT95110978T patent/ATE164659T1/en not_active IP Right Cessation
- 1995-07-13 EP EP95110978A patent/EP0695866B1/en not_active Expired - Lifetime
- 1995-07-13 ES ES95110978T patent/ES2117332T3/en not_active Expired - Lifetime
- 1995-07-31 US US08/509,341 patent/US5562073A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4419801A (en) * | 1980-01-19 | 1983-12-13 | Toyo Kogyo Co., Ltd. | Method for manufacturing a cast iron cylinder block |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59501756D1 (en) | 1998-05-07 |
| DE9412637U1 (en) | 1995-11-30 |
| US5562073A (en) | 1996-10-08 |
| EP0695866A1 (en) | 1996-02-07 |
| ATE164659T1 (en) | 1998-04-15 |
| ES2117332T3 (en) | 1998-08-01 |
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