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DE357793C - Two-part piston for internal combustion engines - Google Patents

Two-part piston for internal combustion engines

Info

Publication number
DE357793C
DE357793C DEE26503D DEE0026503D DE357793C DE 357793 C DE357793 C DE 357793C DE E26503 D DEE26503 D DE E26503D DE E0026503 D DEE0026503 D DE E0026503D DE 357793 C DE357793 C DE 357793C
Authority
DE
Germany
Prior art keywords
piston
internal combustion
combustion engines
part piston
attachment
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
Application number
DEE26503D
Other languages
German (de)
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.)
Ehrhardt & Sehmer Akt Ges
Original Assignee
Ehrhardt & Sehmer Akt Ges
Publication date
Priority to DEE26503D priority Critical patent/DE357793C/en
Application granted granted Critical
Publication of DE357793C publication Critical patent/DE357793C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F02F3/00Pistons 
    • F02F3/0015Multi-part pistons
    • F02F3/003Multi-part pistons the parts being connected by casting, brazing, welding or clamping

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

Zweiteiliger Kolben für Verbrennungskraftmaschinen. Es ist bekannt, die Kolben von Verbrenriungskraftmaschinen - zwecks Gewichtsverininderung und besserer Wärmeableitung aus Leichtmetall, z. B. aus Aluminium, zu machen und sie an der den größten Temperaturen ausgesetzten Stelle mit einem Bodenaufsatz von weniger empfindlichem Material, z. B. aus Schmiedeeisen oder Stahlguß, zu versehen. Die Ausführung geschah dabei so, daß der aufgesetzte Boden deckelartig an seinem Rande mit dem hohlen, oben offenen Führungskörper des Kolbens verbunden wurde. Erfahrungsgemäß wurden diese Kolbenböden, zumal bei größeren Maschinen, häufig unzulässig heiß, weil der Wärmeübergang zur Kolbenlauffläche nicht genügte, auch traten Störungen durch Schadhaftwerden der Dichtungsstellen ein.Two-part piston for internal combustion engines. It is known, the pistons of internal combustion engines - for the purpose of weight reduction and better Heat dissipation from light metal, e.g. B. made of aluminum and attach them to the place exposed to the greatest temperatures with a bottom attachment of less sensitive Material, e.g. B. made of wrought iron or cast steel to be provided. The execution happened in such a way that the attached bottom is like a lid at its edge with the hollow, open-top guide body of the piston was connected. Experience has shown that these piston crowns, especially in larger machines, are often impermissibly hot because of the Heat transfer to the piston running surface was not sufficient, and there were also malfunctions due to damage the sealing points.

Der Erfindungsgegenstand vermeidet diese Nachteile. Ein Undichtwerden wird verhütet, indem der Kolbenkörper aus Leichtmetall cz mit einem eigenen Boden d aus einem Stück gegossen wird, und ein guter Wärmeübergang des in der gezeichneten Darstellung in Stahlguß gedachten Bodenaufsatzes b wird dadurch geschaffen, daß sich der Aufsatz auch in der Mitte mit einem breiten Fuß auf den Kolbenboden d aufstützt. Die Wärmeaufnahme des Kolbens findet in erster Linie an der Stelle der Brennstoffeinspritzung, d. i. in der Mitte des Kolbens, statt. Hier sind die Temperaturen, Wirbelungen und Gasgeschwindigkeiten am höchsten und infolgedessen die Wärmeaufnahme des Kolbens am größten. Durch den mittleren breiten Fuß wird somit der Aufsatz b von einer radialen Wärmeabfuhr stark entlastet.The subject matter of the invention avoids these disadvantages. A leak is prevented by making the piston body made of light metal cz with its own bottom d is cast in one piece, and a good heat transfer of the one drawn in Representation in cast steel imaginary floor attachment b is created in that the attachment is also supported in the middle with a broad foot on the piston crown d. The heat absorption of the piston takes place primarily at the point of fuel injection, d. i. in the middle of the piston. Here are the temperatures, eddies and The highest gas velocities and, as a result, the heat absorption of the piston the biggest. Through the middle wide foot, the attachment b is thus radial Heavily relieved of heat dissipation.

Die Verbindung des Aufsatzes b mit dem Kolben a kann in beliebiger Weise durch Schraubenbolzen erfolgen.The connection of the attachment b with the piston a can be in any Way done by screw bolts.

Claims (1)

PATENTANSPRUCH: Zweiteiliger Kolben für Verbrennungskraftmaschinen, dessen unterer Kolbenkörper aus Leichtmetall besteht, auf den sich der aus Stahlguß oder anderem geeigneten Material bestehende Bodenaufsatz aufstützt, dadurch gekennzeichnet, daß der Kolbenkörper (a) oben einen geschlossenen mit ihm aus einem Stück bestehenden Boden (d) besitzt, auf den sich der Bodenaufsatz (b) auch in der Mitte mit einem breiten Fuß (c) aufstützt. PATENT CLAIM: Two-part piston for internal combustion engines, the lower piston body of which is made of light metal, on which the base made of cast steel or other suitable material rests, characterized in that the piston body (a) has a closed base (d) on top. on which the floor attachment (b) rests in the middle with a wide foot (c).
DEE26503D Two-part piston for internal combustion engines Expired DE357793C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE26503D DE357793C (en) Two-part piston for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE26503D DE357793C (en) Two-part piston for internal combustion engines

Publications (1)

Publication Number Publication Date
DE357793C true DE357793C (en) 1922-09-01

Family

ID=7072192

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE26503D Expired DE357793C (en) Two-part piston for internal combustion engines

Country Status (1)

Country Link
DE (1) DE357793C (en)

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