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DE362811C - Pistons for single-acting internal combustion engines with a cylindrical piston ring body consisting of a metal that conducts heat well and a protective cap in the piston crown that is not very sensitive to high temperatures and whose outer part can expand freely - Google Patents

Pistons for single-acting internal combustion engines with a cylindrical piston ring body consisting of a metal that conducts heat well and a protective cap in the piston crown that is not very sensitive to high temperatures and whose outer part can expand freely

Info

Publication number
DE362811C
DE362811C DEE26974D DEE0026974D DE362811C DE 362811 C DE362811 C DE 362811C DE E26974 D DEE26974 D DE E26974D DE E0026974 D DEE0026974 D DE E0026974D DE 362811 C DE362811 C DE 362811C
Authority
DE
Germany
Prior art keywords
protective cap
metal
pistons
internal combustion
sensitive
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
DEE26974D
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 A G
Original Assignee
Ehrhardt & Sehmer A G
Publication date
Priority to DEE26974D priority Critical patent/DE362811C/en
Application granted granted Critical
Publication of DE362811C publication Critical patent/DE362811C/en
Expired legal-status Critical Current

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
    • F02F3/00—Pistons 
    • F02F3/10—Pistons  having surface coverings
    • F02F3/12—Pistons  having surface coverings on piston heads
    • F02F3/14—Pistons  having surface coverings on piston heads within combustion chambers

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

Kolben für einfach wirkende Verbrennungskraftmaschinen mit einem aus einem die Wärme gut leitenden Metall bestehenden zylindrischen Kolbenringkörper und einer gegen hohe Temperaturen wenig empfindlichen Schutzkappe im Kolbenboden, deren äußerer Teil sich frei ausdehnen kann.. Es ist bekannt, Kolben für einfach wirkende Venbrennungskraftmaschinen mit Schutzkappen zu versehen, welche leicht auswechselbar und aus einem für die hohen Temperaturen ;besonders geeigneten Material hergestellt `sind und idie sich nach außen frei ausdehnen können. Es ist auch schon vorgeschlagen worden, den zylindrischen, die Kolbenringe tragenden Teil des Kolbens aus einem die Wärme gut leitenden Material, z. B. Aluminium, herzustellen.Pistons for single-acting internal combustion engines with one out a cylindrical piston ring body consisting of a metal that conducts heat well and a protective cap in the piston crown, which is not very sensitive to high temperatures, the outer part of which can expand freely .. It is known for pistons to be simple Acting internal combustion engines to be provided with protective caps, which easily exchangeable and made of a material that is particularly suitable for the high temperatures are manufactured and i that can expand freely outwards. It's also beautiful has been proposed, the cylindrical, the piston rings bearing part of the piston made of a material that conducts heat well, e.g. B. aluminum to produce.

Ein Nachteil ,der bisher .bekannten Konstruktionen .bestand idarin, Jaß die Wärmeableitung von der Schutzkappe zum Kolbenkörper unsicher und unvollkommen war. Infolgedessen wurde die Schutzkappe zu heiß und zeigte eine kurze Lebensdauer.One disadvantage of the previously known constructions was that The heat dissipation from the protective cap to the piston body is unsafe and imperfect was. As a result, the protective cap became too hot and had a short service life.

Dem Vorteil der freien Ausdehnung der bekannten Schutzkappen steht der Nachteil gegenüber, daß die Berührungsfläche von Kappe und Kolbenkörper unerwünscht klein ausfällt und deshalb den guten Wärmefluß hindert. Um trotz der kleinen Berührungsfläche einen günstigen Wärmefluß zu erzielen, soll gemäß der vorliegenden Erfindung zwischen Schutzkappe und Kolbenkörper ein Hohlraum gelassen werden, :der mit einem leicht schmelzbaren Metall gefüllt ist, welches in bekannter Weise bei den Hubwechseln albwechselnd in innige Berührung mit Schutzkappe und Kolbenkörper kommt und dabei die Wärme überträgt.The advantage of the free expansion of the known protective caps is available the disadvantage on the other hand that the contact surface of cap and piston body is undesirable turns out to be small and therefore hinders the good flow of heat. To despite the small touch area To achieve a favorable heat flow, according to the present invention between Protective cap and plunger body are left with a cavity: the one with a slightly fusible metal is filled, which in a known manner in the change of stroke alternately comes into intimate contact with the protective cap and piston body and thereby which transfers heat.

In ,der Abbildung ist ein solcher .Kolben im Schnitt dargestellt. a ist der Kolben, b sind die Kolbenringe, c eine .durch Mutter d mit dem Kolbenkörper a verbundene Schutzkappe, deren Außenränder sich frei ausdehnen können. 7awisohen dem inneren Teil dieser Schutzkappe und dem Kolbenkörper befindet sich ein mit leicht schmelzbarem Metall ausgefüllter Raum e. Um die Berührungsflächen mit ;dem Metall zu vergrö ern, können Schutzkappe und Kolben noch mit Rippen versehen sein. Der Raum e kann völlig oder auch nur teilweise mit Metall gefüllt sein.Such a piston is shown in section in, the figure. a is the piston, b are the piston rings, c is a protective cap connected to the piston body a by a nut d, the outer edges of which can expand freely. A space e filled with easily fusible metal is located outside the inner part of this protective cap and the piston body. In order to enlarge the contact surfaces with the metal, the protective cap and piston can also be provided with ribs. The space e can be completely or only partially filled with metal.

Claims (1)

PATENTANSPRUCH: Kolben für einfach wirkende Verfbrennungskraftmaschinen mit einem aus einem .die Wärme gut leitenden Metall bestehenden zylindrischen Kolbenringkörper und einer gegen hohe Temperaturen wenig empfindlichen Schutzkappe im Kolbenboden, deren äußerer Teil sich frei ausdehnen kann, dadurch: gekennzeichnet, daß zwischen .dem mittleren Teil der Schutzkappe (c) und` dem Kolbenkörper (a) ein mit einem laicht schmelzenden Metall gefüllter Hohlraum (e) liegt.PATENT CLAIM: Pistons for single-acting internal combustion engines with a cylindrical piston ring body consisting of a metal that conducts heat well and a protective cap in the piston crown, which is not very sensitive to high temperatures, the outer part of which can expand freely, characterized in that between .the middle part of the protective cap (c) and the piston body (a) with a spawns melting metal filled cavity (e) lies.
DEE26974D Pistons for single-acting internal combustion engines with a cylindrical piston ring body consisting of a metal that conducts heat well and a protective cap in the piston crown that is not very sensitive to high temperatures and whose outer part can expand freely Expired DE362811C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE26974D DE362811C (en) Pistons for single-acting internal combustion engines with a cylindrical piston ring body consisting of a metal that conducts heat well and a protective cap in the piston crown that is not very sensitive to high temperatures and whose outer part can expand freely

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE26974D DE362811C (en) Pistons for single-acting internal combustion engines with a cylindrical piston ring body consisting of a metal that conducts heat well and a protective cap in the piston crown that is not very sensitive to high temperatures and whose outer part can expand freely

Publications (1)

Publication Number Publication Date
DE362811C true DE362811C (en) 1922-11-02

Family

ID=7072469

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE26974D Expired DE362811C (en) Pistons for single-acting internal combustion engines with a cylindrical piston ring body consisting of a metal that conducts heat well and a protective cap in the piston crown that is not very sensitive to high temperatures and whose outer part can expand freely

Country Status (1)

Country Link
DE (1) DE362811C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670726A (en) * 1950-05-09 1954-03-02 Barnes & Reinecke Inc Internal-combustion engine, piston for use therein, and method of operating same
US2731313A (en) * 1950-05-04 1956-01-17 Samuel J Walker Internal combustion engine piston

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731313A (en) * 1950-05-04 1956-01-17 Samuel J Walker Internal combustion engine piston
US2670726A (en) * 1950-05-09 1954-03-02 Barnes & Reinecke Inc Internal-combustion engine, piston for use therein, and method of operating same

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