DE19528409A1 - Method for mfg. cylindrical crank with housing for internal combustion engines - involves cylindrical sleeve case which is opened by use of magnetic fields, sleeve contains magnet coil which produces strong magnetic impulse - Google Patents

Method for mfg. cylindrical crank with housing for internal combustion engines - involves cylindrical sleeve case which is opened by use of magnetic fields, sleeve contains magnet coil which produces strong magnetic impulse

Info

Publication number
DE19528409A1
DE19528409A1 DE1995128409 DE19528409A DE19528409A1 DE 19528409 A1 DE19528409 A1 DE 19528409A1 DE 1995128409 DE1995128409 DE 1995128409 DE 19528409 A DE19528409 A DE 19528409A DE 19528409 A1 DE19528409 A1 DE 19528409A1
Authority
DE
Germany
Prior art keywords
cylinder
cylindrical
internal combustion
sleeve
magnet coil
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Withdrawn
Application number
DE1995128409
Other languages
German (de)
Inventor
Goetz Mielsch
Robert Schalausky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE1995128409 priority Critical patent/DE19528409A1/en
Publication of DE19528409A1 publication Critical patent/DE19528409A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B11/00Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
    • F16B11/006Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases or frames
    • F02F7/0085Materials for constructing engines or their parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00Metals
    • F05C2201/02Light metals
    • F05C2201/021Aluminium

Abstract

The method involves a glued cylinder sleeve case through the expansion of which a magnetic field is produced. The adhesive connection is compressed by opening up the cylinder casing using a magnetic field. The cylinder sleeve has a maximum wall thickness of 0.5 millimetres. The cylindrical sleeve contains a magnet coil and produces a strong magnetic impulse per millisecond.

Description

Die Erfindung betrifft ein Herstellverfahren für ein Zylinderkurbelgehäuse einer Brennkraftmaschine mit eingeklebten Zylinderbüchsen. Ein derartiges Zylinderkurbelgehäuse ist aus der DE-OS 21 40 378 bekannt.The invention relates to a manufacturing method for a cylinder crankcase an internal combustion engine with glued-in cylinder liners. Such a thing Cylinder crankcase is known from DE-OS 21 40 378.

Die Verwendung von separaten Zylinderbüchsen ist insbesondere bei Zylin­ derkurbelgehäusen aus Aluminium-Legierungen oder allgemein Leichtme­ tall-Legierungen besonders vorteilhaft, da durch geeignete Auswahl des Materials für die Zylinderbüchsen eine optimale Laufflächengestaltung für die in den Zylindern geführten Kolben erzielbar ist, ohne daß aufwendige Beschichtungen der Aluminium-Legierung oder Leichtmetall-Legierung er­ forderlich sind. Jedoch stellt das übliche Eingießen von Zylinderbüchsen in Kurbelgehäuse aus Leichtmetall-Legierungen einen relativ hohen Ferti­ gungsaufwand dar. Demgegenüber einfacher wäre es, die Zylinderbüchsen in das Kurbelgehäuse einzukleben.The use of separate cylinder liners is particularly important with Zylin crankcase made of aluminum alloys or in general Leichtme tall alloys particularly advantageous because by appropriate selection of Materials for the cylinder liners an optimal tread design for the pistons guided in the cylinders can be achieved without expensive Coatings of aluminum alloy or light metal alloy are required. However, the usual pouring of cylinder liners into Crankcase made of light metal alloys a relatively high ferti The cylinder liners would be simpler glued into the crankcase.

Hierfür ein besonders vorteilhaftes Fer­ tigungsverfahren aufzuzeigen, ist Aufgabe der vorliegenden Erfindung. For this a particularly advantageous Fer To demonstrate the production process is the object of the present invention.  

Zur Lösung dieser Aufgabe ist vorgesehen, daß das Verpressen der Klebe­ verbindung durch Aufweiten der Zylinderbüchsen mittels eines Magnetfeldes erfolgt. Vorteilhafte Weiterbildungen sind Inhalt der Unteransprüche.To solve this problem it is provided that the pressing of the adhesive connection by expanding the cylinder liners using a magnetic field he follows. Advantageous further developments are the content of the subclaims.

Die Klebetechnologie, insbesondere in Verbindung mit Aluminium-Werkstof­ fen, ist heute so weit fortgeschritten, daß auch im Rahmen einer Großserien­ fertigung Zylinderbüchsen mit Kurbelgehäusen standfest und zuverlässig verklebt werden können, jedoch muß dafür Sorge getragen werden, daß beim Verkleben in der Klebezone ein ausreichend hoher Anpreßdruck auf­ gebracht wird. Hierzu schlägt die Erfindung vor, die Zylinderbüchse kurzzei­ tig mittels eines Magnetfeldes aufzuweiten. Äußerst zufriedenstellende Er­ gebnisse wurden mit Zylinderbüchsen erzielt, deren Wandstärke im Bereich zwischen 0,2 mm und 0,5 mm lag und die kurzzeitig im magnetischen Fluß aufgeweitet wurden. Hierzu kann auf einfache Weise eine Magnetspule in die in das Zylinderkurbelgehäuse eingesetzte Zylinderbüchse eingehängt werden. Durch Aufbringen eines starken Magnetimpulses über einer Zeit­ spanne im Millisekundenbereich erfolgt ein nahezu ebenso kurzzeitiges Aufweiten der Zylinderbüchse, wodurch diese mit ausreichend hoher An­ preßkraft gegen die Zylinderwand des Zylinderkurbelgehäuses gepreßt wird. Diese hohe Anpreßkraft reicht aus, die sichere und dauerfeste Klebeverbin­ dung zwischen Zylinderbüchse und Zylinderkurbelgehäuse herzustellen, wozu selbstverständlich die einander zugewandten Kontaktflächen vor dem Einsetzen der Zylinderbüchse in das Zylinderkurbelgehäuse mit einem ge­ eigneten Klebstoff beschichtet wurden.The adhesive technology, especially in connection with aluminum material fen is so advanced today that even in the context of large series manufacture cylinder liners with crankcases stable and reliable can be glued, but care must be taken that when gluing in the adhesive zone, a sufficiently high contact pressure brought. To this end, the invention proposes the cylinder liner briefly expand using a magnetic field. Extremely satisfactory Results were achieved with cylinder liners, the wall thickness of which is in the range was between 0.2 mm and 0.5 mm and briefly in the magnetic flux have been expanded. For this purpose, a magnetic coil can easily be placed in the cylinder liner inserted in the cylinder crankcase will. By applying a strong magnetic pulse over time range in the millisecond range is almost as short Widening of the cylinder liner, causing it to be sufficiently high pressing force is pressed against the cylinder wall of the cylinder crankcase. This high contact pressure is sufficient, the safe and durable adhesive bond between the cylinder liner and the cylinder crankcase, why the contact surfaces facing each other of course Insert the cylinder liner into the cylinder crankcase with a ge suitable adhesive were coated.

Auch unter Berücksichtigung der vorgeschlagenen geringen Wandstärke für die Zylinderbüchse empfiehlt es sich, diese im wesentlichen vollflächig mit dem Aluminium-Zylinderkurbelgehäuse zu verkleben. Abweichend vom oben zitierten bekannten Stand der Technik liegt somit keine nasse Zylinder­ büchse vor. Dies ist jedoch aufgrund der guten Wärmeleitfähigkeit des für das Zylinderkurbelhäuse vorgesehenen Aluminiums unproblematisch. Aus dem gleichen Grunde halten sich auch die Anforderungen für den verwende­ ten Klebstoff in vertretbarem Rahmen, da die Wandtemperatur üblicherweise stets unter 200°C bleibt. Im übrigen stellt aufgrund der großen Klebefläche bei im wesentlichen vollflächiger Verklebung die Klebefestigkeit auch nur ein zweitrangiges Problem dar. Besonders vorteilhaft macht sich hingegen die dünne Wandstärke der Zylinderbüchsen im Hinblick auf das Gewicht der Brennkraftmaschine bemerkbar. Ferner zeichnet sich ein erfindungsgemäß hergestelltes Brennkraftmaschinen-Kurbelgehäuse durch äußerst kompakte Bauweise aus. Stets können mit den in den Patentansprüchen aufgelisteten Merkmalen auf einfache Weise sicher und zuverlässig Zylinderbüchsen in Zylinderkurbelgehäuse eingeklebt werden.Also taking into account the proposed small wall thickness for it is advisable to use the cylinder liner essentially over the entire surface to glue the aluminum cylinder crankcase. Different from the above The known prior art cited is therefore not a wet cylinder rifle before. However, this is due to the good thermal conductivity of the the cylinder crankcase provided aluminum unproblematic. Out  for the same reason, the requirements for the user ten adhesive in an acceptable range, since the wall temperature is usually always stays below 200 ° C. Otherwise, due to the large adhesive surface with essentially full-surface bonding, the adhesive strength is only one is a secondary problem. The thin wall thickness of the cylinder liners in terms of the weight of the Internal combustion engine noticeable. Furthermore, according to the invention Engine crankcase produced by extremely compact Construction. You can always use those listed in the claims Features in a simple way safe and reliable cylinder liners in Cylinder crankcase are glued.

Claims (3)

1. Herstellverfahren für ein Zylinderkurbelgehäuse einer Brennkraftma­ schine mit eingeklebten Zylinderbüchsen, dadurch gekennzeichnet, daß das Verpressen der Klebeverbindung durch Aufweiten der Zylinderbüchse mittels eines Magnetfeldes er­ folgt.1. Manufacturing method for a cylinder crankcase of an internal combustion engine with glued-in cylinder liners, characterized in that the pressing of the adhesive connection by expanding the cylinder liner by means of a magnetic field follows it. 2. Herstellverfahren nach Anspruch 1, dadurch gekennzeichnet, daß in die Zylinderbüchse mit einer maximalen Wandstärke von 0,5 mm eine Magnetspule eingehängt und über ein im Millisekundenbereich liegendes Zeitintervall ein star­ ker Magnetimpuls erzeugt wird.2. Manufacturing method according to claim 1, characterized in that in the cylinder liner with a maximum 0.5 mm wall thickness, a magnetic coil is hung in and a star over a time interval in the millisecond range ker magnetic pulse is generated. 3. Herstellverfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Zylinderbüchse im wesentlichen vollflächig mit dem Aluminium-Zylinderkurbelgehäuse verklebt wird.3. Manufacturing method according to claim 1 or 2, characterized in that the cylinder liner essentially is fully glued to the aluminum cylinder crankcase.
DE1995128409 1995-08-02 1995-08-02 Method for mfg. cylindrical crank with housing for internal combustion engines - involves cylindrical sleeve case which is opened by use of magnetic fields, sleeve contains magnet coil which produces strong magnetic impulse Withdrawn DE19528409A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995128409 DE19528409A1 (en) 1995-08-02 1995-08-02 Method for mfg. cylindrical crank with housing for internal combustion engines - involves cylindrical sleeve case which is opened by use of magnetic fields, sleeve contains magnet coil which produces strong magnetic impulse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995128409 DE19528409A1 (en) 1995-08-02 1995-08-02 Method for mfg. cylindrical crank with housing for internal combustion engines - involves cylindrical sleeve case which is opened by use of magnetic fields, sleeve contains magnet coil which produces strong magnetic impulse

Publications (1)

Publication Number Publication Date
DE19528409A1 true DE19528409A1 (en) 1997-02-06

Family

ID=7768525

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995128409 Withdrawn DE19528409A1 (en) 1995-08-02 1995-08-02 Method for mfg. cylindrical crank with housing for internal combustion engines - involves cylindrical sleeve case which is opened by use of magnetic fields, sleeve contains magnet coil which produces strong magnetic impulse

Country Status (1)

Country Link
DE (1) DE19528409A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035956A1 (en) * 1970-07-20 1972-01-27 Hohenzollern Huettenverwalt Method for fastening sliding metal liners in the cylinder bores of piston engines
EP0230866A1 (en) * 1985-12-05 1987-08-05 FIAT AUTO S.p.A. Glueing process of cylinder liners to crankcase of an internal combustion engine
DE4244502C1 (en) * 1992-12-30 1994-03-17 Bruehl Aluminiumtechnik Cylinder crankcase and method for its manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035956A1 (en) * 1970-07-20 1972-01-27 Hohenzollern Huettenverwalt Method for fastening sliding metal liners in the cylinder bores of piston engines
EP0230866A1 (en) * 1985-12-05 1987-08-05 FIAT AUTO S.p.A. Glueing process of cylinder liners to crankcase of an internal combustion engine
DE4244502C1 (en) * 1992-12-30 1994-03-17 Bruehl Aluminiumtechnik Cylinder crankcase and method for its manufacture

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