DE19832718A1 - Cast aluminum engine block for internal combustion motor - Google Patents
Cast aluminum engine block for internal combustion motorInfo
- Publication number
- DE19832718A1 DE19832718A1 DE1998132718 DE19832718A DE19832718A1 DE 19832718 A1 DE19832718 A1 DE 19832718A1 DE 1998132718 DE1998132718 DE 1998132718 DE 19832718 A DE19832718 A DE 19832718A DE 19832718 A1 DE19832718 A1 DE 19832718A1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder
- engine block
- casting
- graphite plate
- channel
- 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.)
- Withdrawn
Links
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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0002—Cylinder arrangements
- F02F7/0007—Crankcases of engines with cylinders in line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
- B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- 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
-
- 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
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Erzeugen eines kleinen Hohlraumes in einem Guß stück, insbesondere in einem Motorblock, insbesondere aus Aluminium.The invention relates to a method for creating a small cavity in one casting piece, especially in an engine block, especially made of aluminum.
Um die Baulänge eines Motorblocks möglichst gering zu halten, ist man bestrebt, die Zylin derbohrungen einer Zylinderreihe eng aneinanderzusetzen.In order to keep the overall length of an engine block as short as possible, the Zylin is endeavored the bores of a row of cylinders close together.
Dabei ergibt sich neben anderen Schwierigkeiten eine mangelnde Wärmeableitung der dünn gewordenen Zwischenwände der Zylinderbohrungen. Besonders im obereren Bereich, wo das Explosionsgas die längste Verweildauer hat, kann sich das Material, insbesondere Aluminium, bis zum Verlust seiner Standfestigkeit erhitzen, wenn keine Abhilfe geschaffen wird.In addition to other difficulties, there is a lack of heat dissipation thin walls of the cylinder bores. Especially in the upper area, where the explosive gas has the longest dwell time, the material, in particular Aluminum, heat to the point of losing its stability if no remedy is found becomes.
Es ist überlegt worden, hier in den Zwischenwänden schmale wasserführende Kanäle zu schaffen, die sich jeweils zwischen den beiderseits der Zylinderbohrungsreihe ausgebildeten Wasserführungen erstrecken; ein Gedanke ist, einen Schlitz einzuschneiden und oben wie der zu verschließen, ein anderer, durch die Blockwand hindurch Querbohrungen auszu führen und die Blockwand wieder zu verschließen.It has been considered to close narrow water channels in the partitions create, each formed between the two sides of the row of cylinder bores Water channels extend; one thought is to cut a slit and top like which to close, another, through the block wall through holes lead and close the block wall again.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, mit dem kleine Hohl räume in einem Gußstück, insbesondere in den Zylinderzwischenwänden eines Motorblocks, beim Gießen erzeugt werden können.The invention has for its object to provide a method with the small cavity spaces in a casting, especially in the cylinder walls of an engine block, can be generated during casting.
Gemäß der Erfindung ist vorgesehen, daß ein brennbares, aber bei Gießtemperatur be ständiges Kernteil in die Gießform eingebaut wird und nach dem Ausformen des Gußstückes ausgebrannt wird. According to the invention it is provided that a combustible, but at casting temperature be permanent core part is installed in the mold and after molding the casting is burned out.
In der Regel wird nur Kohlenstoff, vorzugsweise Graphit, als Material für das Kernteil geeignet sein. Vor allem bei besonders niedrig schmelzenden Nichteisenmetallegierungen sind aber auch andere Materialien denkbar.As a rule, only carbon, preferably graphite, is suitable as the material for the core part his. But especially in the case of particularly low-melting non-ferrous metal alloys other materials are also conceivable.
Zum Ausbrennen des Kernteils wird zweckmäßigerweise Sauerstoff zugeführt.To burn out the core part, oxygen is expediently supplied.
In vorteilhafter Ausgestaltung der Erfindung ist zum Gießen eines Motorblocks, insbesondere aus Aluminium, eine Gießform vorgesehen, in der jeweils eine Graphitplatte als Brücke im Formhohlraum der Zylinderbohrungszwischenwand zwischen beiderseits der Zylinderboh rungsreihe einen Wassermantel ausbildenden Kernteilen angeordnet und mit ihren Enden in die Kernteile eingeformt ist.In an advantageous embodiment of the invention, in particular for casting an engine block made of aluminum, a mold is provided, in each of which a graphite plate as a bridge in the Mold cavity of the cylinder bore intermediate wall between the cylinder bore on both sides a water jacket core parts arranged and with their ends in the core parts are molded.
Graphitkörper können mit ziemlich hoher Festigkeit hergestellt werden.Graphite bodies can be made with fairly high strength.
Die Graphitplatte kann z. B. eine Dicke von 0,5 bis 2 mm oder weniger und/oder eine Höhe von 5 bis 20 mm oder weniger haben.The graphite plate can e.g. B. a thickness of 0.5 to 2 mm or less and / or a height from 5 to 20 mm or less.
Die Zeichnungen geben ein Ausführungsbeispiel der Erfindung wieder.The drawings show an embodiment of the invention.
Fig. 1 zeigt einen Längsmittelschnitt durch einen Teil eines Zylinderblocks, Fig. 1 shows a longitudinal central section through a portion of a cylinder block,
Fig. 2 zeigt einen Schnitt nach Linie II-II in Fig. 1. Fig. 2 shows a section along line II-II in Fig. 1st
In Fig. 1 erscheinen die erste Zylinderbohrung des Zylinderblockes mit einer Auskleidung 2, die erste Zylinderbohrungszwischenwand 3 und die Auskleidung 4 der nächsten Zylinder bohrung 5.In Fig. 1 appear the first cylinder bore of the cylinder block with a lining 2 , the first cylinder bore intermediate wall 3 and the lining 4 of the next cylinder bore 5th
In Fig. 2 erscheinen die Zylinderbohrungen 1 und 5 je zur Hälfte mit der Zylinderbohrungs zwischenwand 3 in der Mitte. In den eingekreisten Abschnitten A und B ist noch der Zustand der Gießform dargestellt.In Fig. 2 the cylinder bores 1 and 5 each appear half with the cylinder bore intermediate wall 3 in the middle. The circled sections A and B also show the condition of the mold.
Zu erkennen sind die Außenwand 6 des Motorblocks, die Zylinderkopffläche 7, der Wasser mantel 8 und zwei Stehbolzen 9 zur Befestigung von Zylinderköpfen.You can see the outer wall 6 of the engine block, the cylinder head surface 7 , the water jacket 8 and two studs 9 for fastening cylinder heads.
In den eingerahmten Abschnitten A und B ist der den Wassermantel 8 ausbildende Formkern 10 dargestellt. In diesen eingeformt ist mit zwei dickeren Endabschnitten 11 eine längliche Graphitplatte 12. Sie hat zwischen den dickeren Endabschnitten 11 eine Dicke von etwa 1,2 mm und eine Höhe von etwa 12 mm. Mit diesen Abmessungen erstreckt sie sich mittig durch die Dicke der Zylinderbohrungszwischenwand 3, und zwar in einer Höhe unmittelbar unter den Stehbolzen 9. The molded core 10 forming the water jacket 8 is shown in the framed sections A and B. An elongated graphite plate 12 is molded into this with two thicker end sections 11 . It has a thickness of approximately 1.2 mm and a height of approximately 12 mm between the thicker end sections 11 . With these dimensions, it extends centrally through the thickness of the cylinder bore intermediate wall 3 , specifically at a height directly below the stud bolts 9 .
Fig 1 und Fig. 2 außerhalb der eingekreisten Abschnitte A und B zeigen die Graphitplatte 12 in dem nach dem Gießen entformten Motorblock vor ihrem Entfernen.Fig 1 and Fig. 2 outside the encircled portions A and B show the graphite plate 12 in the demolded after casting engine block prior to its removal.
Die Graphitplatte 12 wird anschließend entfernt durch Ausbrennen. Sie wird unter Aufblasen von Sauerstoff gezündet und brennt durchgehend aus, wenn fortdauernd Sauerstoff in den durch ihr Ausbrennen freigelegten Kanal eingeblasen wird. Dies kann zur Beschleunigung von beiden Seiten her geschehen.The graphite plate 12 is then removed by burning out. It is ignited while oxygen is inflated and burns out continuously if oxygen is continuously blown into the channel exposed by its burning out. This can be done from both sides to accelerate.
Die Wasserführung in dem Motorblock ist mit einem gewissen Druckgefälle zwischen der einen Seite der Zylinderreihe und der anderen vorgesehen. Dadurch wird der durch die Graphitplatte 12 erzeugte Kanal durchströmt und damit ein Abtransport von Wärme be werkstelligt.The water flow in the engine block is provided with a certain pressure drop between one side of the cylinder bank and the other. As a result, the channel generated by the graphite plate 12 is flowed through and thus heat is removed.
Für andere wasserführende, ölführende oder gasführende dünne Kanäle in einem Zylinder block oder Zylinderkopf läßt sich das Verfahren gleichfalls mit Vorteil anwenden, insbeson dere auch für eine schmale Wasserführung zwischen den Ventilbohrungen eines Zylinder kopfes.For other water-carrying, oil-carrying or gas-carrying thin channels in one cylinder block or cylinder head, the method can also be used with advantage, in particular also for narrow water flow between the valve bores of a cylinder head.
Claims (10)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998132718 DE19832718A1 (en) | 1998-07-21 | 1998-07-21 | Cast aluminum engine block for internal combustion motor |
AT99113976T ATE292534T1 (en) | 1998-07-21 | 1999-07-17 | CASTING MOLD AND CASTING PROCESS FOR PRODUCING AN ENGINE BLOCK |
DK99113976T DK0974414T3 (en) | 1998-07-21 | 1999-07-17 | Mold and molding method for manufacturing an engine block |
EP99113976A EP0974414B1 (en) | 1998-07-21 | 1999-07-17 | Casting mould and a casting process for the production of an engine block |
DE29924794U DE29924794U1 (en) | 1998-07-21 | 1999-07-17 | Cast aluminum engine block for internal combustion motor |
DE59911865T DE59911865D1 (en) | 1998-07-21 | 1999-07-17 | Casting mold and casting method for producing an engine block |
ES99113976T ES2241215T3 (en) | 1998-07-21 | 1999-07-17 | FOUNDRY MOLD AND FOUNDRY PROCEDURE FOR THE MANUFACTURE OF A MOTOR BLOCK. |
US09/358,143 US6205959B1 (en) | 1998-07-21 | 1999-07-20 | Motor block as well as casting mold and casting method for the manufacture thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998132718 DE19832718A1 (en) | 1998-07-21 | 1998-07-21 | Cast aluminum engine block for internal combustion motor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19832718A1 true DE19832718A1 (en) | 2000-01-27 |
Family
ID=7874773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1998132718 Withdrawn DE19832718A1 (en) | 1998-07-21 | 1998-07-21 | Cast aluminum engine block for internal combustion motor |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19832718A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10033271A1 (en) * | 1999-07-13 | 2001-01-25 | Ford Global Tech Inc | Water jacket core |
WO2006061046A1 (en) * | 2004-12-29 | 2006-06-15 | Hydro Aluminium Deutschland Gmbh | Casting mould for casting a motor block for an internal combustion engine, motor block for an internal combustion engine and use of a hollow profile |
FR2885061A1 (en) * | 2005-04-29 | 2006-11-03 | Peugeot Citroen Automobiles Sa | SINK ETAN FOR CASTER CYLINDER CAST IRON |
WO2011006651A2 (en) | 2009-07-15 | 2011-01-20 | Lahnwerk Gmbh | Mold insert for a casting core and/or a casting mold and casting core and/or casting mold comprising a mold insert |
EP2636468A2 (en) | 2012-03-06 | 2013-09-11 | KS Aluminium-Technologie GmbH | Device for manufacturing a cylinder crankcase |
DE102013017594A1 (en) | 2013-09-27 | 2015-04-02 | Forschungszentrum Jülich GmbH | Production method for electrochemical cells of a solid-state battery |
-
1998
- 1998-07-21 DE DE1998132718 patent/DE19832718A1/en not_active Withdrawn
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10033271A1 (en) * | 1999-07-13 | 2001-01-25 | Ford Global Tech Inc | Water jacket core |
DE10033271B4 (en) * | 1999-07-13 | 2004-11-11 | Ford Global Technologies, LLC (n.d.Ges.d. Staates Delaware), Dearborn | Water jacket core |
WO2006061046A1 (en) * | 2004-12-29 | 2006-06-15 | Hydro Aluminium Deutschland Gmbh | Casting mould for casting a motor block for an internal combustion engine, motor block for an internal combustion engine and use of a hollow profile |
FR2885061A1 (en) * | 2005-04-29 | 2006-11-03 | Peugeot Citroen Automobiles Sa | SINK ETAN FOR CASTER CYLINDER CAST IRON |
WO2011006651A2 (en) | 2009-07-15 | 2011-01-20 | Lahnwerk Gmbh | Mold insert for a casting core and/or a casting mold and casting core and/or casting mold comprising a mold insert |
DE102009033402A1 (en) | 2009-07-15 | 2011-01-27 | Lahnwerk Gmbh | Mold insert for a casting core and / or a casting mold and casting core and / or casting mold with a mold insert |
EP2636468A2 (en) | 2012-03-06 | 2013-09-11 | KS Aluminium-Technologie GmbH | Device for manufacturing a cylinder crankcase |
DE102012101893A1 (en) | 2012-03-06 | 2013-09-12 | Ks Aluminium-Technologie Gmbh | Device for producing a cylinder crankcase |
DE102012101893B4 (en) * | 2012-03-06 | 2016-03-31 | Ks Huayu Alutech Gmbh | Device for producing a cylinder crankcase |
DE102012101893C5 (en) | 2012-03-06 | 2022-06-23 | Ks Huayu Alutech Gmbh | Device for manufacturing a cylinder crankcase |
DE102013017594A1 (en) | 2013-09-27 | 2015-04-02 | Forschungszentrum Jülich GmbH | Production method for electrochemical cells of a solid-state battery |
WO2015043564A1 (en) | 2013-09-27 | 2015-04-02 | Forschungszentrum Jülich GmbH | Method for producing electrochemical cells of a solid-state battery |
US10763549B2 (en) | 2013-09-27 | 2020-09-01 | Forschungzentrum Juelich Gmbh | Method for producing electrochemical cells of a solid-state battery |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |