DE3941701C1 - Cast cylinder head is formed of two parts - it has top part made of aluminium alloy and bottom part of reinforced fibre, for low wt. and high strength - Google Patents
Cast cylinder head is formed of two parts - it has top part made of aluminium alloy and bottom part of reinforced fibre, for low wt. and high strengthInfo
- Publication number
- DE3941701C1 DE3941701C1 DE19893941701 DE3941701A DE3941701C1 DE 3941701 C1 DE3941701 C1 DE 3941701C1 DE 19893941701 DE19893941701 DE 19893941701 DE 3941701 A DE3941701 A DE 3941701A DE 3941701 C1 DE3941701 C1 DE 3941701C1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder head
- parts
- bottom part
- high strength
- low
- 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
Classifications
-
- 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
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- 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
- F02F1/24—Cylinder heads
Abstract
Description
Die Erfindung betrifft ein Zylinderkopfgehäuse nach dem Ober begriff des Patentanspruchs.The invention relates to a cylinder head housing according to the upper concept of claim.
Aus der DE-OS 34 44 406 sind gegossene, den Brennraum einer Brennkraftmaschine begrenzende aus einem Leichtmetall-Werkstoff bestehende Bauteile, wie z. B. der Zylinderkopf, bekannt, welche zur Vermeidung von Beanspruchung durch Verschleiß und/oder thermische Belastung in ihren Oberflächenbereichen eingegossene keramische Fasern oder Whisker aufweisen. Beanspruchungsseitig werden die offenen Poren der Faser- bzw. Whiskerstruktur mit einer Schicht einer eine geringe Porosität aufweisenden gehär teten keramischen Masse ausgefüllt, auf der der Beanspruchung abgewandten Seite mit einer Schicht des Leichtmetall-Werkstoffs und im Übergangsbereich mit einer aus der keramischen Masse und dem Leichtmetall-Werkstoff gebildeten Schicht.From DE-OS 34 44 406 are cast, the combustion chamber one Internal combustion engine limiting from a light metal material existing components, such as B. the cylinder head, known to avoid wear and / or stress poured thermal load in their surface areas have ceramic fibers or whiskers. Stress side the open pores of the fiber or whisker structure a layer of a low porosity filled ceramic mass on which the stress side facing away with a layer of the light metal material and in the transition area with one from the ceramic mass and the layer of light metal material.
Von Nachteil dabei ist, daß die zwischen dem keramischen Werk stoff und dem Leichtmetall-Werkstoff bestehenden unterschied lichen Wärmeausdehnungskoeffizienten vollständig von den Fasern bzw. Whiskern aufgenommen werden müssen. Außerdem ist es nötig, die Tränkung der Fasern bzw. Whisker von ihrer beanspruchssei tigen und beanspruchsabseitigen Oberfläche her in getrennten Arbeitsschritten durchzuführen.The disadvantage here is that between the ceramic plant difference between the fabric and the light metal material thermal expansion coefficient completely from the fibers or whiskers must be included. It is also necessary the impregnation of the fibers or whiskers from their stress level term and stress-dependent surface forth in separate To carry out work steps.
Aus der DE-Z "Nutzfahrzeug", September 1986, Seite 52, ist es zwar bekannt, in einen Zylinderkopf einen keramischen Einsatz an Stellen besonders hoher Beanspruchung, wie zum Beispiel an den Ventilsitzen, einzusetzen, jedoch weist dieser Einsatz wie derum einen anderen Ausdehnungskoeffizienten als der übrige Zylinderkopf auf, so daß es zu Spannungen im Zylinderkopf kommt.From DE-Z "Commercial Vehicle", September 1986, page 52, it is Although known, a ceramic insert in a cylinder head in places of particularly high stress, such as on the valve seats, but this insert shows how therefore a different expansion coefficient than the rest Cylinder head on so that there is tension in the cylinder head is coming.
In der CH-Z "Technische Rundschau" 1/89, Seiten 28 bis 32, sind Leichtmetallegierungen als durch keramische Fasern verstärkte Matrixwerkstoffe beschrieben. Diese Leichtmetallmatrix-Faser- Verbundwerkstoffe können nach der CH-Z direkt oder nach Ferti gung eines Halbzeugs zu Bauteilen verarbeitet werden. Dabei muß jedoch das ganze Bauteil, unabhängig von speziellen höher bela steten Bereichen, aus diesem Werkstoff hergestellt werden, was insbesondere bei größeren Bauteilen einen erhöhten Aufwand dar stellt.In the CH-Z "Technische Rundschau" 1/89, pages 28 to 32, are Light metal alloys as reinforced by ceramic fibers Matrix materials described. This light metal matrix fiber Composite materials can be produced according to the CH-Z directly or according to Ferti processing of a semi-finished product into components. It must however, the whole component, regardless of special higher load constant areas, what are made of this material This is an increased effort, especially for larger components poses.
Der Erfindung liegt die Aufgabe zugrunde, ein Leichtmetall-Zylinder kopfgehäuse für eine Brennkraftmaschine zu schaffen, das bei geringem Gewicht eine hohe Festigkeit aufweist und dennoch ein fach herzustellen ist.The invention has for its object a light metal cylinder to create a head housing for an internal combustion engine, which at low weight has a high strength and yet a is to manufacture.
Diese Aufgabe wird bei einer gattungsgemäßen Einrichtung durch die im kennzeichnenden Teil des Patentanspruchs angegebenen Merkmale gelöst.This task is performed in a generic device by the in the characterizing Part of the claim specified features solved.
Weitere Merkmale und Ausgestaltungen gehen aus der Beschreibung hervor.Further Features and configurations emerge from the description.
Ein aus einem Leichtmetallwerkstoff, zum Beispiel Aluminium, hergestelltes Zylinderkopfgehäuse besteht aus einem Oberteil und dem gesondert hergestellten, thermisch stark beanspruchten Bodenteil. Zur Erhöhung der Festigkeit des Zylinderkopfgehäuses ist der Leichtmetallwerkstoff durch anorganisches Material ver stärkt.One made of a light metal material, for example aluminum, The manufactured cylinder head housing consists of an upper part and the separately manufactured, thermally stressed Bottom part. To increase the strength of the cylinder head housing is the light metal material ver through inorganic material strengthens.
Die Verstärkung des thermisch stärker beanspruchten Bodenteils durch das Faser- bzw. Whiskermaterial erfolgt dadurch, daß bei der Herstellung des Werkstoffes diesem faserförmiges oder par tikelförmiges Material beigemischt wird. Zur Festigkeitserhö hung wird die Orientierung der Fasern im Werkstoff so gewählt, daß die Faserrichtung mit der Hauptbelastungsrichtung überein stimmt, so z. B. in besonders beanspruchten Bereichen wie den Ventilstegen und den Stegen zwischen Brennkammer oder Düsenboh rung und Ventilen bei einem Dieselmotor. Der faserverstärkte Werkstoff kann als Halbzeug bezogen werden und durch Einschmel zen und anschließendes Gießen zu einem Zylinderkopfgehäuse wei terverarbeitet werden.The reinforcement of the thermally more stressed bottom part by the fiber or whisker material in that at the manufacture of the material this fibrous or par particulate material is added. To increase strength The orientation of the fibers in the material is selected so that that the fiber direction coincides with the main load direction true, e.g. B. in particularly stressed areas such as Valve webs and the webs between the combustion chamber or jet boring tion and valves in a diesel engine. The fiber reinforced Material can be obtained as a semi-finished product and by melting zen and subsequent casting to a cylinder head housing white be processed.
Die beiden Teile des Zylinderkopfgehäuses werden anschließend zum gesamten Zylinderkopfgehäuse durch bekannte Verfahren zu sammengefügt und z. B. durch Schweißen, Löten oder Kleben ver bunden. Die Verbindung der beiden Teile ist dabei problemlos, da sowohl das Oberteil, als auch das Bodenteil aus dem gleichen Aluminium-Werkstoff mit den gleichen Eigenschaften, das heißt mit gleichem Ausdehnungskoeffizienten, besteht.The two parts of the cylinder head housing are then to the entire cylinder head housing by known methods put together and z. B. by welding, soldering or gluing ver bound. The connection of the two parts is easy, because both the top and the bottom are made of the same thing Aluminum material with the same properties, that is with the same coefficient of expansion.
Das Zylinderkopfgehäuse weist somit bei einem geringen Gewicht eine hohe Festigkeit, insbesondere in seinen besonders bean spruchten Bereichen des Bodenteils, auf und kann dennoch durch die Verwendung eines Halbzeugs als Ausgangsmaterial einfach hergestellt werden.The cylinder head housing thus has a low weight high strength, especially in its particularly bean areas of the bottom part, and can still through the use of a semi-finished product as a starting material is simple getting produced.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893941701 DE3941701C1 (en) | 1989-12-18 | 1989-12-18 | Cast cylinder head is formed of two parts - it has top part made of aluminium alloy and bottom part of reinforced fibre, for low wt. and high strength |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893941701 DE3941701C1 (en) | 1989-12-18 | 1989-12-18 | Cast cylinder head is formed of two parts - it has top part made of aluminium alloy and bottom part of reinforced fibre, for low wt. and high strength |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3941701C1 true DE3941701C1 (en) | 1991-06-13 |
Family
ID=6395671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19893941701 Expired - Lifetime DE3941701C1 (en) | 1989-12-18 | 1989-12-18 | Cast cylinder head is formed of two parts - it has top part made of aluminium alloy and bottom part of reinforced fibre, for low wt. and high strength |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3941701C1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19608576C1 (en) * | 1996-03-06 | 1997-06-19 | Daimler Benz Ag | Liquid cooled motor cylinder head |
EP1803520A1 (en) * | 2005-12-09 | 2007-07-04 | Hydro Aluminium Mandl&Berger GMBH | Cylinder head made out of at least two precast sections and method for its manufacture |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3444406A1 (en) * | 1984-12-05 | 1986-06-05 | Kolbenschmidt AG, 7107 Neckarsulm | CASTED COMPONENTS FOR INTERNAL COMBUSTION ENGINES WITH PEGED-IN REINFORCEMENT BODIES, AND METHOD FOR PRODUCING THE CONNECTION BETWEEN THE COMPONENTS AND THE REINFORCEMENT BODIES |
-
1989
- 1989-12-18 DE DE19893941701 patent/DE3941701C1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3444406A1 (en) * | 1984-12-05 | 1986-06-05 | Kolbenschmidt AG, 7107 Neckarsulm | CASTED COMPONENTS FOR INTERNAL COMBUSTION ENGINES WITH PEGED-IN REINFORCEMENT BODIES, AND METHOD FOR PRODUCING THE CONNECTION BETWEEN THE COMPONENTS AND THE REINFORCEMENT BODIES |
Non-Patent Citations (2)
Title |
---|
CH-Z.: "Technische Rundschau",1/89, Seiten 28-32 * |
DE-Z.: "Nutzfahrzeug", September 1986, S. 52 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19608576C1 (en) * | 1996-03-06 | 1997-06-19 | Daimler Benz Ag | Liquid cooled motor cylinder head |
EP1803520A1 (en) * | 2005-12-09 | 2007-07-04 | Hydro Aluminium Mandl&Berger GMBH | Cylinder head made out of at least two precast sections and method for its manufacture |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLER-BENZ AKTIENGESELLSCHAFT, 70567 STUTTGART, |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE |
|
8339 | Ceased/non-payment of the annual fee |