EP0869270A2 - Cylinder block with welded bridge-elements - Google Patents
Cylinder block with welded bridge-elements Download PDFInfo
- Publication number
- EP0869270A2 EP0869270A2 EP98104647A EP98104647A EP0869270A2 EP 0869270 A2 EP0869270 A2 EP 0869270A2 EP 98104647 A EP98104647 A EP 98104647A EP 98104647 A EP98104647 A EP 98104647A EP 0869270 A2 EP0869270 A2 EP 0869270A2
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- EP
- European Patent Office
- Prior art keywords
- cylinder
- coolant jacket
- wall
- cylinder tube
- cast
- 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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Links
- 239000002826 coolant Substances 0.000 claims abstract description 71
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004512 die casting Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000006082 mold release agent Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004381 surface treatment Methods 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
-
- 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
-
- 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
- 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
- F02F2001/106—Cylinders; Cylinder heads having cooling means for liquid cooling using a closed deck, i.e. the water jacket is not open at the block top face
Definitions
- the invention relates to a casting in the form of a cylinder crankcase or a cylinder tube part with one or more Cylinder bores and a coolant jacket space that the cylinder bores essentially concentric and surrounded by one Cylinder tube wall and a coolant jacket wall are formed and at least on a top surface (cylinder head seat surface) is partially completed, as well as a manufacturing process of such a casting.
- Cylinder crankcases of the type mentioned are in today's internal combustion engines common practice.
- the cylinder crankcase forms a top surface on which the cylinder head is placed and includes crankcase cheeks that support the crankcase bearings record, tape.
- the cylinder crankcase is down with a Oil pan completed.
- Cylinder tube parts of the type mentioned are rather larger Internal combustion engines common.
- the cylinder tube parts are here - if necessary together with attached cylinder heads - on Crankcase clamped using tie rods.
- the cylinder tube parts and the cylinder heads can be used as individual elements or be connected to each other to form several.
- the cylinder bores of the castings mentioned can, if suitable Material or with a suitable surface treatment immediately the cylinder liners of the coolant-cooled cylinder tubes form or in turn so-called dry cylinder liners, the surface contact with the cylinder bores mentioned have record, which form the cylinder liners.
- cylinder liners can be cast in the casting (from Pour the melt) or subsequently into the finished casting be used.
- the coolant jacket rooms mentioned serve to dissipate heat from the area of the cylinder bores by means of the flowing through Coolant.
- a common cooling circuit After a first widespread design form the cylinder head and cylinder crankcase a common cooling circuit.
- the coolant from the coolant jacket spaces via coolant transfer openings in the area of the Cover surface in the attached cylinder head, the corresponding Has coolant ports on its bottom, about.
- a seal is inserted between the two parts, the corresponding openings for the coolant transfer channels Has.
- cooling circuits of the cylinder head and cylinder crankcase executed completely separately.
- a seal inserted between the two parts without coolant transfer openings seal off the coolant jacket spaces on the top surface and separate the two cooling circuits hold.
- Castings in the form of cylinder crankcases are in a so-called "Open-deck” construction and in a so-called “closed-deck” construction known. Leave the explanations below analogous to castings in the form of cylindrical tube parts transferred type mentioned. Stand with the "open deck” construction the cylinder tube walls in relation to the coolant jacket walls completely free in the area of the top surface (e.g. DE 36 39 691 A1). The walls delimiting the coolant jacket viewed from the top surface are preferably undercut-free educated. This gives the possibility Castings of this type in die casting technology in permanent molds (molds) to manufacture. One axially in the direction of the cylinder bores Removable molded part or core part forms the coolant jacket space.
- the object of the present invention to provide a casting of the type mentioned, the die casting process can be produced in permanent forms without the typical ones Show disadvantages of the "open deck” construction.
- a first solution to this is that the coolant jacket space of cast wall surfaces of the cylinder tube wall and the coolant jacket wall is formed by the top surface (Cylinder head seat surface) viewed without undercut are, and that bridge elements in the coolant jacket space in Area of the coolant transfer openings that are used the cylinder tube wall and the coolant jacket wall in some areas connect with each other and coolant transfer openings set free.
- a second solution is that the coolant jacket space of cast wall surfaces of the cylinder tube wall and the Coolant jacket wall is formed by the top surface (Cylinder head seat surface) are undercut-free, and that bridge elements are introduced into the coolant jacket space which are the cylinder tube wall and the coolant jacket wall all around and connect the coolant jacket space Completely complete on the top surface.
- the prerequisites for realization become a common cooling circuit of the cylinder head and cylinder crankcase created.
- the second solution separate cooling circuits for the cylinder head and cylinder crankcase represent.
- the cylinder head gasket is only used for sealing the fuel gases, but not in relation to the coolant in Claimed. Except for inflow and outflow bores completely closed coolant jacket rooms receive one Form that even by casting with lost cores just under would be very difficult to present.
- the castings according to the invention are preferably made of Aluminum or magnesium alloys are produced that especially for internal combustion engines from passenger cars Weight reasons are increasingly preferred.
- the bridge elements consist of welded or glued molded parts.
- the molded parts In addition to welding or gluing in this Moldings used in this way are also shrunk or be wedged.
- the use of such molded parts is particularly indispensable if the thickness of the coolant jacket is one certain size exceeds.
- the molded parts can be placed on shoulders in the wall surfaces rest either cast or mechanically are made.
- the Bridge elements consist essentially of weld metal. This is preferred on coolant jackets of relatively low radial Thickness applicable.
- a support element can be used beforehand be inserted or pinched, which immediately flows away of the weld metal when manufacturing the bridge elements prevented.
- the cylinder bore 12 is a cylinder bore in the end position.
- the cylinder tube walls 14, 15 have a common tube wall section 17.
- Die Cylinder tube walls 14, 15 form with the coolant jacket wall 16 each essentially concentric to the cylinder tube walls 14, 15 extending coolant jacket space 18. As can be seen in FIG. 1, this can be seen from a cover surface 19 viewed from axially undercut-free walls 20 of FIG Cylinder tube walls 14, 15 and 22 of the coolant jacket wall 16 limited.
- Bridge elements 23 - 28 In the area of the top surface 19 there are bridge elements 23 - 28 provided that the cylinder tube walls 14, 15 with the Connect the coolant jacket wall 16.
- the one shown in section Bridge element 23 consists of a molded part 31 which Paragraphs 30, 32 is placed in the walls 20, 22 and by means of Welds 33, 35 is connected to these.
- the average Bridge element 25 shown consists exclusively of Weld metal.
- the bridge elements 23, 25 and 24, 26 are exemplary opposite each other on a cross-sectional line arranged perpendicular to the connecting line of the cylinder tube centers.
- the bridge elements 27, 28 are each between the common Cylinder tube wall 17 and the coolant jacket wall 16 arranged.
- the coolant jacket space 18 runs essentially concentric to the cylinder tube walls 14, 15, wherein his radial thickness, however, to adapt to the inflow and outflow conditions of the cooling water varies over the circumference is.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft ein Gußteil in Form eines Zylinderkurbelgehäuses oder eines Zylinderrohrteils mit einer oder mehreren Zylinderbohrungen und einem Kühlmittelmantelraum, der die Zylinderbohrungen im wesentlichen konzentrisch umgibt und von einer Zylinderrohrwandung und einer Kühlmittelmantelwandung gebildet wird und an einer Deckfläche (Zylinderkopfsitzfläche) zumindest teilweise abgeschlossen ist, sowie ein Verfahren zur Herstellung eines solchen Gußteils.The invention relates to a casting in the form of a cylinder crankcase or a cylinder tube part with one or more Cylinder bores and a coolant jacket space that the cylinder bores essentially concentric and surrounded by one Cylinder tube wall and a coolant jacket wall are formed and at least on a top surface (cylinder head seat surface) is partially completed, as well as a manufacturing process of such a casting.
Zylinderkurbelgehäuse der genannten Art sind bei heutigen Verbrennungsmotoren allgemein üblich. Das Zylinderkurbelgehäuse bildet eine Deckfläche, auf die der Zylinderkopf aufgesetzt wird, und umfaßt Kurbelgehäusewangen, die die Kurbelgehäuselager aufnehmen. Das Zylinderkurbelgehäuse wird nach unten mit einer Ölwanne abgeschlossen.Cylinder crankcases of the type mentioned are in today's internal combustion engines common practice. The cylinder crankcase forms a top surface on which the cylinder head is placed and includes crankcase cheeks that support the crankcase bearings record, tape. The cylinder crankcase is down with a Oil pan completed.
Zylinderrohrteile der genannten Art sind eher bei größeren Verbrennungsmotoren üblich. Die Zylinderrohrteile werden hierbei - gegebenenfalls zusammen mit aufgesetzten Zylinderköpfen - am Kurbelgehäuse mittels Zugankern verspannt. Die Zylinderrohrteile und die Zylinderköpfe können hierbei als Einzelelemente oder jeweils untereinander zu mehreren verbunden ausgebildet sein.Cylinder tube parts of the type mentioned are rather larger Internal combustion engines common. The cylinder tube parts are here - if necessary together with attached cylinder heads - on Crankcase clamped using tie rods. The cylinder tube parts and the cylinder heads can be used as individual elements or be connected to each other to form several.
Die Zylinderbohrungen der genannten Gußteile können bei geeignetem Werkstoff bzw. bei geeigneter Oberflächenbehandlung unmittelbar die Zylinderlaufbahnen der mit Kühlmittel gekühlten Zylinderrohre bilden oder ihrerseits sogenannte trockene Zylinderbuchsen, die Oberflächenkontakt mit den genannten Zylinderbohrungen haben, aufnehmen, die die Zylinderlaufbahnen bilden.The cylinder bores of the castings mentioned can, if suitable Material or with a suitable surface treatment immediately the cylinder liners of the coolant-cooled cylinder tubes form or in turn so-called dry cylinder liners, the surface contact with the cylinder bores mentioned have record, which form the cylinder liners.
Diese Zylinderbuchsen können im Gußteil eingegossen sein (von Schmelze umgossen) oder in das fertige Gußteil nachträglich eingsetzt sein.These cylinder liners can be cast in the casting (from Pour the melt) or subsequently into the finished casting be used.
Die genannten Kühlmittelmantelräume, denen Kühlmittel in nicht näher darzustellender Weise zugeführt wird, dienen der Wärmeabfuhr aus dem Bereich der Zylinderbohrungen mittels des durchströmenden Kühlmittels. Nach einer ersten verbreiteten Ausgestaltungsform bilden Zylinderkopf und Zylinderkurbelgehäuse einen gemeinsamen Kühlkreislauf. Hierbei strömt innerhalb des gemeinsamen Kühlkreislaufs das Kühlmittel aus den Kühlmittelmantelräumen über Kühlmittelübertrittsöffnungen im Bereich der Deckfläche in den aufgesetzten Zylinderkopf, der entsprechende Kühlmittelübertrittsöffnungen auf seiner Unterseite hat, über. Zwischen den beiden Teilen ist hierbei eine Dichtung eingesetzt, die entsprechende Durchbrüche für die Kühlmittelübertrittskanäle hat. Nach einer zweiten, zunehmend in Gebrauch kommenden Ausführungsform werden Kühlkreisläufe von Zylinderkopf und Zylinderkurbelgehäuse völlig getrennt ausgeführt. Hierbei kann eine zwischen beiden Teilen eingesetzte Dichtung ohne Kühlmittelübertrittsöffnungen die Kühlmittelmantelräume an der Deckfläche abschließen und die beiden Kühlkreisläufe damit voneinander getrennt halten.The coolant jacket rooms mentioned, which coolant in not Is supplied in more detail, serve to dissipate heat from the area of the cylinder bores by means of the flowing through Coolant. After a first widespread design form the cylinder head and cylinder crankcase a common cooling circuit. Here flows inside the common cooling circuit the coolant from the coolant jacket spaces via coolant transfer openings in the area of the Cover surface in the attached cylinder head, the corresponding Has coolant ports on its bottom, about. A seal is inserted between the two parts, the corresponding openings for the coolant transfer channels Has. According to a second, increasingly coming into use embodiment become cooling circuits of the cylinder head and cylinder crankcase executed completely separately. Here, a seal inserted between the two parts without coolant transfer openings seal off the coolant jacket spaces on the top surface and separate the two cooling circuits hold.
Gußteile in Form von Zylinderkurbelgehäusen sind in sogenannter "open-deck"-Konstruktion und in sogenannter "closed-deck"-Konstruktion bekannt. Die hierzu nachfolgenden Erklärungen lassen sich sinngemäß auf Gußteile in Form von Zylinderrohrteilen der genannten Art übertragen. Bei der "open-deck"-Konstruktion stehen die Zylinderrohrwandungen im Verhältnis zu den Kühlmittelmantelwandungen im Bereich der Deckfläche vollkommen frei (z.B. DE 36 39 691 A1). Die den Kühlmittelmantel begrenzenden Wandungen sind hierbei von der Deckfläche betrachtet bevorzugt hinterschnittfrei ausgebildet. Hieraus ergibt sich die Möglichkeit, Gußteile dieser Art in Druckgußtechnik in Dauergußformen (Kokillen) herzustellen. Ein in Richtung der Zylinderbohrungen axial entfernbares Formteil bzw. Kernteil bildet den Kühlmittelmantelraum. Bei der "closed-deck"-Konstruktion sind zwischen der Zylinderrohrwandung und der Kühlmittelmantelwandung im Bereich der Deckfläche Überbrückungen vorgesehen, die die Kühlwasserübertrittsöffnungen reduzieren (z.B. MTZ 1993, S. 421, Bild 2, S. 579, Bild 5). Durch diese Konstruktion ergibt sich ein Bauteil größerer Festigkeit. Ein Verformen der Zylinderrohrwandungen im Querschnitt (Ovalisieren) wird ebenso verhindert wie ein wesentlicher Unterschied der thermischen Dehnungen zwischen Zylinderrohrwandung einerseits und Kühlmittelmantelwandung andererseits, der zu Verzügen und Beschädigungen der Dichtungen führen könnte. Zylinderkurbelgehäuse bzw. Zylinderrohrteile mit diesen Merkmalen können nur unter Verwendung verlorener Kerne und geeigneter Gießverfahren hergestellt werden.Castings in the form of cylinder crankcases are in a so-called "Open-deck" construction and in a so-called "closed-deck" construction known. Leave the explanations below analogous to castings in the form of cylindrical tube parts transferred type mentioned. Stand with the "open deck" construction the cylinder tube walls in relation to the coolant jacket walls completely free in the area of the top surface (e.g. DE 36 39 691 A1). The walls delimiting the coolant jacket viewed from the top surface are preferably undercut-free educated. This gives the possibility Castings of this type in die casting technology in permanent molds (molds) to manufacture. One axially in the direction of the cylinder bores Removable molded part or core part forms the coolant jacket space. In the "closed-deck" construction there are between the cylinder tube wall and the coolant jacket wall in the area of Covering area bridges provided that the cooling water transfer openings reduce (e.g. MTZ 1993, p. 421, picture 2, p. 579, picture 5). This construction results in a component greater strength. A deformation of the cylinder tube walls in the Cross-section (ovalizing) is prevented as well as an essential one Difference in thermal expansion between the cylinder tube wall on the one hand and coolant jacket wall on the other hand, which could lead to warpage and damage to the seals. Cylinder crankcase or cylinder tube parts with these features can only use lost cores and more suitable Casting process can be produced.
Hiervon ausgehend ist es die Aufgabe der vorliegenden Erfindung, ein Gußteil der genannten Art bereitzustellen, das im Druckgußverfahren in Dauerformen herstellbar ist, ohne die typischen Nachteile der "open-deck"-Konstruktion aufzuweisen.Proceeding from this, it is the object of the present invention to provide a casting of the type mentioned, the die casting process can be produced in permanent forms without the typical ones Show disadvantages of the "open deck" construction.
Eine erste Lösung hierfür besteht darin, daß der Kühlmittelmantelraum von gegossenen Wandungsflächen der Zylinderrohrwandung und der Kühlmittelmantelwandung gebildet wird, die von der Deckfläche (Zylinderkopfsitzfläche) betrachtet hinterschnittfrei sind, und daß Brückenelemente in den Kühlmittelmantelraum im Bereich der Kühlmittelübertrittsöffnungen eingesetzt sind, die die Zylinderrohrwandung und die Kühlmittelmantelwandung bereichsweise miteinander verbinden und Kühlmittelübertrittsöffnungen freilassen. A first solution to this is that the coolant jacket space of cast wall surfaces of the cylinder tube wall and the coolant jacket wall is formed by the top surface (Cylinder head seat surface) viewed without undercut are, and that bridge elements in the coolant jacket space in Area of the coolant transfer openings that are used the cylinder tube wall and the coolant jacket wall in some areas connect with each other and coolant transfer openings set free.
Eine zweite Lösung besteht darin, daß der Kühlmittelmantelraum von gegossenen Wandungsflächen der Zylinderrohrwandung und der Kühlmittelmantelwandung gebildet wird, die von der Deckfläche (Zylinderkopfsitzfläche) betrachtet hinterschnittfrei sind, und daß Brückenelemente in den Kühlmittelmantelraum eingebracht sind, die die Zylinderrohrwandung und die Kühlmittelmantelwandung umlaufend miteinander verbinden und den Kühlmittelmantelraum an der Deckfläche vollständig abschließen.A second solution is that the coolant jacket space of cast wall surfaces of the cylinder tube wall and the Coolant jacket wall is formed by the top surface (Cylinder head seat surface) are undercut-free, and that bridge elements are introduced into the coolant jacket space which are the cylinder tube wall and the coolant jacket wall all around and connect the coolant jacket space Completely complete on the top surface.
Mit der erfindungsgemäßen Form des Gußteils können die Vorteile der Druckgußtechnik wie insbesondere Dünnwandigkeit und Endkonturnähe sowie hohe Gießgeschwindigkeit wie bei einer "open-deck"-Konstruktion voll ausgeschöpft werden. Weitere sich ergebende Vorteile sind die Möglichkeit, Ölkanäle und Kernlöcher vorzugießen. Auf der anderen Seite werden auch die Vorteile der "closed-deck"-Konstruktion ausgeschöpft, indem durch die anschließend hergestellten Überbrückungen zwischen Zylinderrohrwandung und Kühlmittelmantelwandung die mechanische Festigkeit erhöht und die thermischen Dehnungen klein gehalten.With the shape of the casting according to the invention, the advantages die-casting technology such as thin walls and close to final contours as well as high casting speed as with an "open-deck" construction to be fully exploited. More resulting Advantages are the possibility of oil channels and core holes to pour. On the other hand, the benefits of "Closed-deck" construction exhausted by the subsequent Bridges produced between cylinder tube wall and coolant jacket the mechanical strength increased and the thermal expansions kept small.
Mit der ersten Lösung werden die Voraussetzungen für die Verwirklichung eines gemeinsamen Kühlkreislaufs von Zylinderkopf und Zylinderkurbelgehäuse geschaffen. Mit der zweiten Lösung lassen sich getrennte Kühlkreisläufe für Zylinderkopf und Zylinderkurbelgehäuse darstellen. In besonders vorteilhafter Weise wird hierbei die Zylinderkopfdichtung nur zur Abdichtung gegenüber den Brenngasen, nicht jedoch gegenüber dem Kühlmittel in Anspruch genommen. Die bis auf Zuström- und Abströmbohrungen vollkommen geschlossenen Kühlmittelmantelräume erhalten eine Form, die selbst durch Gießen mit verlorenen Kernen nur unter großen Schwierigkeiten darstellbar wäre.With the first solution, the prerequisites for realization become a common cooling circuit of the cylinder head and cylinder crankcase created. With the second solution separate cooling circuits for the cylinder head and cylinder crankcase represent. In a particularly advantageous way the cylinder head gasket is only used for sealing the fuel gases, but not in relation to the coolant in Claimed. Except for inflow and outflow bores completely closed coolant jacket rooms receive one Form that even by casting with lost cores just under would be very difficult to present.
Vorzugsweise sollen die erfindungsgemäßen Gußteile aus Aluminium- bzw. Magnesium-Legierungen hergstellt werden, die insbesondere für Verbrennungsmotoren von Personenkraftwagen aus Gewichtsgründen zunehmend bevorzugt werden. The castings according to the invention are preferably made of Aluminum or magnesium alloys are produced that especially for internal combustion engines from passenger cars Weight reasons are increasingly preferred.
Nach einer ersten Ausgestaltung ist vorgesehen, daß die Brückenelemente aus eingeschweißten oder eingeklebten Formteilen bestehen. Neben dem Verschweißen oder Verkleben können in dieser Weise eingesetzte Formteile auch eingeschrumpft werden oder verkeilt werden. Die Verwendung solcher Formteile ist insbesondere unumgänglich, wenn die Dicke des Kühlmittelmantels eine bestimmte Größe überschreitet. In weiterführender Ausgestaltung dieser Variante können die Formteile auf Absätzen in den Wandungsflächen aufliegen, die entweder eingegossen oder mechanisch gefertigt sind. Hierbei ist es möglich, in Radialrichtung bezogen auf die Zylinderrohrachsen hinterschnittene Ausnehmungen in den Wandungsteilen vorzusehen, in die die Formteile eingreifen.According to a first embodiment it is provided that the bridge elements consist of welded or glued molded parts. In addition to welding or gluing in this Moldings used in this way are also shrunk or be wedged. The use of such molded parts is particularly indispensable if the thickness of the coolant jacket is one certain size exceeds. In further development In this variant, the molded parts can be placed on shoulders in the wall surfaces rest either cast or mechanically are made. Here it is possible to refer to the radial direction recesses cut into the cylinder tube axes in to provide the wall parts in which the molded parts engage.
Nach einer anderen Ausgestaltungsform ist es möglich, daß die Brückenelemente im wesentlichen aus Schweißgut bestehen. Dies ist bevorzugt auf Kühlmittelmäntel von relativ geringer radialer Dicke anwendbar. Auch hier kann jedoch zuvor ein Stützelement eingelegt oder eingeklemmt werden, das ein sofortiges Wegfließen des Schweißgutes beim Herstellen der Brückenelemente verhindert.According to another embodiment, it is possible that the Bridge elements consist essentially of weld metal. This is preferred on coolant jackets of relatively low radial Thickness applicable. Here too, however, a support element can be used beforehand be inserted or pinched, which immediately flows away of the weld metal when manufacturing the bridge elements prevented.
Da die im Druckgußverfahren in Dauergußform hergestellten Gußteile in der Regel mit Formtrennmitteln behaftet sind, wird vorgeschlagen, dieses vor dem Herstellen der Brückenelemente durch Einschweißen oder Einkleben zumindest bereichsweise zu entfernen. Abwandlungen des vorstehend Gesagten ergeben sich für den Fachmann aus dem Gesamtinhalt der Beschreibung.Since the castings produced in the die casting process in continuous casting mold are usually afflicted with mold release agents suggested doing this before making the bridge elements by welding or gluing in at least some areas remove. Modifications of the above result for the specialist from the overall content of the description.
Ein Verfahren zur Herstellung von Gußteilen der genannten Art wird ebenfalls angegeben. Auf den Inhalt der darauf gerichteten Patentansprüche wird hiermit Bezug genommen.A process for the production of castings of the type mentioned is also specified. On the content of those aimed at Claims are hereby incorporated by reference.
Ein bevorzugtes Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen beschrieben. Hierin zeigen
- Fig. 1
- einen Vertikalschnitt durch das Zylinderrohr eines erfindungsgemäßen Gußteils im Bereich des Kühlwassermantelraum gemäß der Schnittlinie nach Fig. 2;
- Fig. 2
- eine Draufsicht auf die Deckfläche des Gußteils nach Fig. 1
- Fig. 1
- a vertical section through the cylinder tube of a casting according to the invention in the region of the cooling water jacket space according to the section line of FIG. 2;
- Fig. 2
- a plan view of the top surface of the casting of FIG. 1st
Die Figuren werden nachstehend gemeinsam beschrieben.The figures are described together below.
Ein Zylinderkurbelgehäuse 11 mit mehreren Zylinderbohrungen 12,
13, von denen zwei dargestellt sind, besteht im Bereich der
Zylinderbohrungen im wesentlichen aus einer Zylinderrohrwandung
14, 15 und einer Kühlmittelmantelwandung 16, die in der Regel
die äußere Kurbelgehäusewandung 16 ist. Die Zylinderbohrung 12
ist eine Zylinderbohrung in Endlage. Die Zylinderrohrwandungen
14, 15 haben einen gemeinsamen Rohrwandungsabschnitt 17. Die
Zylinderrohrwandungen 14, 15 bilden mit der Kühlmittelmantelwandung
16 einen jeweils im wesentlichen konzentrisch zu den Zylinderrohrwandungen
14, 15 verlaufenden Kühlmittelmantelraum 18.
Dieser ist wie in Figur 1 erkennbar durch von einer Deckfläche
19 aus betrachtet axial hinterschnittfreie Wandungen 20 der
Zylinderrohrwandungen 14, 15 und 22 der Kühlmittelmantelwandung
16 begrenzt. Im Bereich der Deckfläche 19 sind Brückenelemente
23 - 28 vorgesehen, die die Zylinderrohrwandungen 14, 15 mit der
Kühlmittelmantelwandung 16 verbinden. Das im Schnitt dargestellte
Brückenelement 23 besteht aus einem Formteil 31, das auf
Absätze 30, 32 in den Wandungen 20, 22 aufgelegt ist und mittels
Schweißnähten 33, 35 mit diesen verbunden ist. Das im Schnitt
dargestellte Brückenelement 25 besteht ausschließlich aus
Schweißgut. Die Brückenelemente 23, 25 und 24, 26 sind beispielhaft
jeweils gegenüberliegend auf einer Querschnittslinie
senkrecht zur Verbindungslinie der Zylinderrohrmitten angeordnet.
Die Brückenelemente 27, 28 sind jeweils zwischen der gemeinsamen
Zylinderrohrwandung 17 und der Kühlmittelmantelwandung
16 angeordnet. Der Kühlmittelmantelraum 18 verläuft im wesentlichen
konzentrisch zu den Zylinderrohrwandungen 14, 15, wobei
seine
radiale Dicke jedoch zur Anpassung an die Zuström- und Abströmverhältnisse
des Kühlwassers über dem Umfang unterschiedlich
ist. A
- 1111
- KurbelgehäuseCrankcase
- 1212th
- ZylinderrohrCylinder barrel
- 1313
- ZylinderrohrCylinder barrel
- 1414
- ZylinderrohrwandungCylinder tube wall
- 1515
- ZylinderrohrwandungCylinder tube wall
- 1616
- KurbelgehäusewandungCrankcase wall
- 1717th
- gemeinsamer Rohrwandungsabschnittcommon pipe wall section
- 1818th
- KühlmittelmantelraumCoolant jacket space
- 1919th
- DeckflächeTop surface
- 2020th
- Wandung (14)Wall (14)
- 2121
- 2222
- Wandung (16)Wall (16)
- 2323
- BrückenelementBridge element
- 2424th
- BrückenelementBridge element
- 2525th
- BrückenelementBridge element
- 2626
- BrückenelementBridge element
- 2727
- BrückenelementBridge element
- 2828
- BrückenelementBridge element
- 2929
- 3030th
- Absatzparagraph
- 3131
- FormteilMolding
- 3232
- Absatzparagraph
- 3333
- SchweißnahtWeld
- 3535
- SchweißnahtWeld
Claims (14)
dadurch gekennzeichnet,
daß der Kühlmittelmantelraum (18) von gegossenen Wandungsflächen (20, 22) der Zylinderrohrwandung (14, 15) und der Kühlmittelmantelwandung (16) gebildet wird, die von der Deckfläche (19) (Zylinderkopfsitzfläche) betrachtet hinterschnittfrei sind, und
daß Brückenelemente (23 - 28) in den Kühlmittelmantelraum (18) eingebracht sind, die die Zylinderrohrwandung (14, 15) und die Kühlmittelmantelwandung (16) bereichsweise miteinander verbinden und Kühlmittelübertrittsöffnungen (26-42) freilassen.Cast part in the form of a cylinder crankcase (11) or a cylinder tube part with one or more cylinder bores (12, 13) and a coolant jacket space (18) which surrounds the cylinder bores (12, 13) essentially concentrically and from a cylinder tube wall (14, 15) and a coolant jacket wall (16) is formed and is at least partially closed off on a cover surface (19) (cylinder head seat surface),
characterized,
that the coolant jacket space (18) is formed by cast wall surfaces (20, 22) of the cylinder tube wall (14, 15) and the coolant jacket wall (16), which are undercut-free when viewed from the top surface (19) (cylinder head seat surface), and
that bridge elements (23-28) are introduced into the coolant jacket space (18), which connect the cylinder tube wall (14, 15) and the coolant jacket wall (16) to one another in some areas and leave coolant transfer openings (26-42) free.
dadurch gekennzeichnet,
daß der Kühlmittelmantelraum (18) von gegossenen Wandungsflächen (20, 22) der Zylinderrohrwandung (14, 15) und der Kühlmittelmantelwandung (16) gebildet wird, die von der Deckfläche (19) (Zylinderkopfsitzfläche) betrachtet hinterschnittfrei sind, und
daß Brückenelemente (23 - 28) in den Kühlmittelmantelraum (18) eingebracht sind, die die Zylinderrohrwandung (14, 15) und die Kühlmittelmantelwandung (16) umlaufend miteinander verbinden und den Kühlmittelmantelraum (18) an der Deckfläche (19) vollständig abschließen.Cast part in the form of a cylinder crankcase (11) or a cylinder tube part with one or more cylinder bores (12, 13) and a coolant jacket space (18) which surrounds the cylinder bores (12, 13) essentially concentrically and from a cylinder tube wall (14, 15) and a coolant jacket wall (16) is formed and is at least partially closed off on a cover surface (19) (cylinder head seat surface),
characterized,
that the coolant jacket space (18) is formed by cast wall surfaces (20, 22) of the cylinder tube wall (14, 15) and the coolant jacket wall (16), which are undercut-free when viewed from the top surface (19) (cylinder head seat surface), and
that bridge elements (23 - 28) are introduced into the coolant jacket space (18), which connect the cylinder tube wall (14, 15) and the coolant jacket wall (16) to each other and completely close the coolant jacket space (18) on the top surface (19).
dadurch gekennzeichnet,
daß die Brückenelemente (23, 24) aus eingeschweißten Formteilen (31) bestehen.Cast part according to claim 1 or 2,
characterized,
that the bridge elements (23, 24) consist of welded molded parts (31).
dadurch gekennzeichnet,
daß die Brückenelemente aus eingeklebten Formteilen bestehen.Cast part according to claim 1 or 2,
characterized,
that the bridge elements consist of glued molded parts.
dadurch gekennzeichnet,
daß die Brückenelemente aus verkeilten Formteilen bestehen. Cast part according to claim 1 or 2,
characterized,
that the bridge elements consist of wedged molded parts.
dadurch gekennzeichnet,
daß die Brückenelemente aus eingeschrumpften Formteilen bestehen.Cast part according to claim 1 or 2,
characterized,
that the bridge elements consist of shrunk molded parts.
dadurch gekennzeichnet,
daß die Formteile (31) auf Absätzen (30, 32) in den Wandungsflächen (20, 22) aufliegen.Cast part according to one of claims 3 to 6,
characterized,
that the molded parts (31) rest on shoulders (30, 32) in the wall surfaces (20, 22).
dadurch gekennzeichnet,
daß die Formteile in in Radialrichtung hinterschnittene Ausnehmungen in den Wandungen (14, 15, 16) eingreifen.Cast part according to one of claims 3 to 7,
characterized,
that the molded parts engage in recesses undercut in the radial direction in the walls (14, 15, 16).
dadurch gekennzeichnet,
daß die Brückenelemente (25, 26) im wesentlichen aus Schweißgut bestehen.Cast part according to claim 1 or 2,
characterized,
that the bridge elements (25, 26) consist essentially of weld metal.
dadurch gekennzeichnet,
daß Brückenelemente (27, 28) an dem gemeinsamen Rohrwandungsabschnitt (17) beidseitig ansetzen.Cast part according to one of claims 1 or 3 to 8 with cast-together cylinder tubes, in which two adjacent cylinder bores (12, 13) are delimited by a common cylinder tube wall section (17),
characterized,
that bridge elements (27, 28) attach to the common pipe wall section (17) on both sides.
dadurch gekennzeichnet,
daß der Kühlmittelmantelraum (18) mit Wandungsflächen (20, 22) der Zylinderrohrwandung (14, 15) und der Kühlmittelmantelwandung (16) gegossen wird, die von der Deckfläche (19) (Zylinderkopfsitzfläche) betrachtet hinterschnittfrei sind, und anschließend Brückenelemente eingefügt werden, die die Zylinderrohrwandung (14, 15) und die Kühlmittelmantelwandung (16) bereichsweise miteinander verbinden und Kühlmittelübertrittsöffnungen (36-42) freilassen.Method for producing a cast part in the form of a cylinder crankcase (11) or a cylinder tube part with one or more cylinder bores (12, 13) and a coolant jacket space (18) which essentially concentrically surrounds the cylinder bores (12, 13) and a cylinder tube wall (14 , 15) and a coolant jacket wall (16) and is at least partially closed off on a cover surface (19) (cylinder head seat surface),
characterized,
that the coolant jacket space (18) is cast with wall surfaces (20, 22) of the cylinder tube wall (14, 15) and the coolant jacket wall (16), which are undercut-free from the top surface (19) (cylinder head seat surface), and then bridge elements are inserted, which Connect the cylinder tube wall (14, 15) and the coolant jacket wall (16) to one another in some areas and leave the coolant transfer openings (36-42) free.
dadurch gekennzeichnet,
daß der Kühlmittelmantelraum (18) mit Wandungsflächen (20, 22) der Zylinderrohrwandung (14, 15) und der Kühlmittelmantelwandung (16) gegossen wird, die von der Deckfläche (19) (Zylinderkopfsitzfläche) betrachtet hinterschnittfrei sind, und anschließend Brückenelemente eingefügt werden, die die Zylinderrohrwandung (14, 15) und die Kühlmittelmantelwandung (16) umlaufend miteinander verbinden und den Kühlmittelmantelraum (18) an der Deckfläche (19) vollständig abschließen.Method for producing a cast part in the form of a cylinder crankcase (11) or a cylinder tube part with one or more cylinder bores (12, 13) and a coolant jacket space (18) which essentially concentrically surrounds the cylinder bores (12, 13) and a cylinder tube wall (14 , 15) and a coolant jacket wall (16) and is at least partially closed off on a cover surface (19) (cylinder head seat surface),
characterized,
that the coolant jacket space (18) is cast with wall surfaces (20, 22) of the cylinder tube wall (14, 15) and the coolant jacket wall (16), which are undercut-free from the top surface (19) (cylinder head seat surface), and then bridge elements are inserted, which Connect the cylinder tube wall (14, 15) and the coolant jacket wall (16) to each other all around and completely close off the coolant jacket chamber (18) on the top surface (19).
dadurch gekennzeichnet,
daß das Gußteil im Druckgußverfahren erzeugt wird.The method of claim 11 or 12,
characterized,
that the casting is produced by die casting.
dadurch gekennzeichnet,
daß vor dem Einfügen der Brückenteile am Gußteil haftendes Formtrennmittel zumindest im Bereich der Brückenteile entfernt werden.The method of claim 11 or 12,
characterized,
that mold release agent adhering to the casting is removed at least in the region of the bridge parts before inserting the bridge parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19714062 | 1997-04-05 | ||
| DE19714062A DE19714062C2 (en) | 1997-04-05 | 1997-04-05 | Cylinder crankcase with welded bridges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0869270A2 true EP0869270A2 (en) | 1998-10-07 |
| EP0869270A3 EP0869270A3 (en) | 1999-05-26 |
Family
ID=7825520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98104647A Withdrawn EP0869270A3 (en) | 1997-04-05 | 1998-03-14 | Cylinder block with welded bridge-elements |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0869270A3 (en) |
| JP (1) | JPH1130152A (en) |
| KR (1) | KR19980081095A (en) |
| BR (1) | BR9801149A (en) |
| CZ (1) | CZ100298A3 (en) |
| DE (1) | DE19714062C2 (en) |
| PL (1) | PL325719A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3163060A1 (en) * | 2015-11-02 | 2017-05-03 | Kabushiki Kaisha Toyota Jidoshokki | Cylinder block and engine body |
| DE102016102468A1 (en) * | 2016-02-12 | 2017-08-17 | Schaufler Tooling GmbH & Co. KG | Motor housing of a reciprocating internal combustion engine and method for producing different engine housings for reciprocating internal combustion engines |
| FR3059049A1 (en) * | 2016-11-22 | 2018-05-25 | Renault S.A.S. | "SEMI-CLOSED TABLATURE CYLINDER BLOCK OBTAINED BY PRESSURE INJECTION MOLDING" |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004051859B4 (en) * | 2004-10-26 | 2017-02-23 | Volkswagen Ag | Housing and method for producing cooling structures for a housing |
| DE102005043193A1 (en) * | 2005-09-09 | 2007-03-15 | Ks Aluminium-Technologie Ag | Cylinder crankcase for motor vehicles |
| JP2009121346A (en) * | 2007-11-15 | 2009-06-04 | Ahresty Corp | Method of manufacturing semi-closed deck type cylinder block, and semi-closed deck type cylinder block |
| US11305374B2 (en) | 2016-09-22 | 2022-04-19 | Nemak, S.A.B. De C.V. | Method for the production of a cast engine block for a combustion engine and engine block |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3639691A1 (en) | 1986-11-20 | 1988-06-01 | Kloeckner Humboldt Deutz Ag | DIESEL INTERNAL COMBUSTION ENGINE |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593143A (en) * | 1982-06-29 | 1984-01-09 | Isuzu Motors Ltd | Cylinder body made of aluminium |
| JPS61132752A (en) * | 1984-11-30 | 1986-06-20 | Toyota Central Res & Dev Lab Inc | High-rigidity cylinder block and its manufacture |
| JPH01148470A (en) * | 1987-12-01 | 1989-06-09 | Mazda Motor Corp | Manufacture of aluminum alloy cylinder block |
| JPH0815647B2 (en) * | 1990-06-28 | 1996-02-21 | 宇部興産株式会社 | Engine block casting equipment |
| JPH06218560A (en) * | 1993-01-21 | 1994-08-09 | Toyota Motor Corp | Manufacture of cylinder block |
| JPH07269410A (en) * | 1994-02-10 | 1995-10-17 | Toyota Motor Corp | Engine cylinder block and manufacture thereof |
-
1997
- 1997-04-05 DE DE19714062A patent/DE19714062C2/en not_active Expired - Fee Related
-
1998
- 1998-03-14 EP EP98104647A patent/EP0869270A3/en not_active Withdrawn
- 1998-04-02 CZ CZ981002A patent/CZ100298A3/en unknown
- 1998-04-04 KR KR1019980011977A patent/KR19980081095A/en not_active Application Discontinuation
- 1998-04-06 JP JP10110204A patent/JPH1130152A/en active Pending
- 1998-04-06 BR BR9801149-9A patent/BR9801149A/en not_active Application Discontinuation
- 1998-04-06 PL PL98325719A patent/PL325719A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3639691A1 (en) | 1986-11-20 | 1988-06-01 | Kloeckner Humboldt Deutz Ag | DIESEL INTERNAL COMBUSTION ENGINE |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3163060A1 (en) * | 2015-11-02 | 2017-05-03 | Kabushiki Kaisha Toyota Jidoshokki | Cylinder block and engine body |
| DE102016102468A1 (en) * | 2016-02-12 | 2017-08-17 | Schaufler Tooling GmbH & Co. KG | Motor housing of a reciprocating internal combustion engine and method for producing different engine housings for reciprocating internal combustion engines |
| FR3059049A1 (en) * | 2016-11-22 | 2018-05-25 | Renault S.A.S. | "SEMI-CLOSED TABLATURE CYLINDER BLOCK OBTAINED BY PRESSURE INJECTION MOLDING" |
Also Published As
| Publication number | Publication date |
|---|---|
| PL325719A1 (en) | 1998-10-12 |
| KR19980081095A (en) | 1998-11-25 |
| DE19714062C2 (en) | 1999-01-21 |
| JPH1130152A (en) | 1999-02-02 |
| BR9801149A (en) | 1999-09-28 |
| EP0869270A3 (en) | 1999-05-26 |
| DE19714062A1 (en) | 1998-10-08 |
| CZ100298A3 (en) | 1998-11-11 |
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