DE648652C - Piston protection device for internal combustion engines - Google Patents

Piston protection device for internal combustion engines

Info

Publication number
DE648652C
DE648652C DEA77385D DEA0077385D DE648652C DE 648652 C DE648652 C DE 648652C DE A77385 D DEA77385 D DE A77385D DE A0077385 D DEA0077385 D DE A0077385D DE 648652 C DE648652 C DE 648652C
Authority
DE
Germany
Prior art keywords
piston
protection device
internal combustion
combustion engines
piston protection
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
DEA77385D
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.)
Aluminiumwerke Nuernberg GmbH
Original Assignee
Aluminiumwerke Nuernberg GmbH
Publication date
Priority to DEA77385D priority Critical patent/DE648652C/en
Application granted granted Critical
Publication of DE648652C publication Critical patent/DE648652C/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 
    • F02F3/28Other pistons with specially-shaped head

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

Kolbenschutzvorrichtung -#l@ Brennkraftmaschinen ä Bei den bisher für Brennkraftmaschinen bekanntgewordenen Kolbenbauarten war namentlich der erste Kolbenring, als der Feuerzone am naheliegendsten, am meisten gefährdet. Nur zu leicht konnten zu diesem Ring die Explosionsgase durchschlagen, ihn übermäßig erhitzen und zum Festbrennen bringen. Die Gase drückten überdies den Kolbenring in einer für seinen Bestand unzulässigen Weise gegen die Zylinderwand, da diese Gase zwischen Nutenboden und Kolbenring eindrangen. Diesen mehrfachen Übelständen suchte man bisher durch Schutzringe aus Hartmetallen entgegenzutreten. Diese Ringe konnten ihre Aufgabe auf Grund ihrer hohen Warmbeständigkeit leichter erfüllen. Sie hatten aber. auch Legierungszusätze, wie z. B. Nickel, deren Verwendung aus @Ar lschaf tlichen Gründen nicht angebracht ist.Piston protection device - # l @ internal combustion engines ä Among the piston designs known so far for internal combustion engines, the first piston ring, as the closest to the fire zone, was most at risk. The explosion gases could penetrate this ring only too easily, heat it excessively and cause it to burn. The gases also pressed the piston ring against the cylinder wall in a manner that was not permitted for its existence, since these gases penetrated between the bottom of the groove and the piston ring. So far, attempts have been made to counter these multiple inconveniences with protective rings made of hard metals. These rings could do their job more easily due to their high heat resistance. But they had. also alloy additives, such as B. Nickel, the use of which is not appropriate for economic reasons.

Vorliegende Erfindung bezweckt, durch zahnartige Erhöhungen und Vertiefungen zwischen dem Kolbenboden und dem ersten Kolbenring das Durchschlagen der Gase zu diesem zu verhindern. In der Zeichnung ist ein Kolben gemäß vorliegender Erfindung in Ansicht dargestellt. Der erste Kolbenring ist mit i, die zahnartigen Erhöhungen und Vertiefungen sind mit 2 und eine schmale Nut zwischen den beiden Zahnreihen ist mit 3 bezeichnet. Die Explosionsgase konnten bislang unmittelbar, auf den ersten Kolbenring i einwirken, weil sich ihnen kein ernstliches Hindernis in den Weg stellte. Bringt man nun in diesem Raum zwischen dem Kolbenboden und dem ersten Kolbenring i die Explosionsgase zum Wirbeln, so ist ihre durchschlagende Kraft geringer. Das wird erreicht durch wellen- oder zahnförmige Erhöhungen und Vertiefungen 2 am Kolbenmantel oberhalb des ersten Kolbenringes i. Zweckmäßig ist es, zwei Reihen solcher Verzahnungen untereinander vorzusehen, diese beiden Reihen voneinander durch eine schmale Nut 3 von o, 5 bis 2 mm Breite zu trennen und sie gegeneinander um eine halbe Zahnteilung zu versetzen.The purpose of the present invention is to provide tooth-like elevations and depressions between the piston crown and the first piston ring, the penetration of the gases closes to prevent this. In the drawing is a piston according to the present invention shown in view. The first piston ring is with i, the tooth-like elevations and indentations are marked with 2 and a narrow groove between the two rows of teeth is denoted by 3. The explosion gases could so far immediately, at first Act on piston ring i because there was no serious obstacle in their way. If you now bring in this space between the piston crown and the first piston ring i the explosion gases for whirling, so their penetrating power is less. That is achieved by wave-shaped or tooth-shaped elevations and depressions 2 on the piston skirt above the first piston ring i. It is useful to have two rows of such teeth to provide among each other, these two rows from each other through a narrow groove 3 to be separated by 0.5 to 2 mm width and against each other by half a tooth pitch to move.

Claims (1)

PATENTANSPRUCH: Kolbenschutzvorrichtung gegen das Durchschlagen von Verbrennungsgasen, dadurch gekennzeichnet, daß unmittelbar über und unter einer an sich bekannten Nut (3) zwischen Kolbenboden und dem ersten Kolbenring -(i) zahnartige Erhöhungen und Vertiefungen (2) vorgesehen sind; die über und unter der Nut (3) gegen. einander um eine halbe Zahnteilung versetzt sind.PATENT CLAIM: Piston protection device against the penetration of Combustion gases, characterized in that immediately above and below one known groove (3) between the piston crown and the first piston ring - (i) tooth-like Elevations and depressions (2) are provided; the above and below the groove (3) against. are offset from one another by half a tooth pitch.
DEA77385D Piston protection device for internal combustion engines Expired DE648652C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA77385D DE648652C (en) Piston protection device for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA77385D DE648652C (en) Piston protection device for internal combustion engines

Publications (1)

Publication Number Publication Date
DE648652C true DE648652C (en) 1937-08-06

Family

ID=6947084

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA77385D Expired DE648652C (en) Piston protection device for internal combustion engines

Country Status (1)

Country Link
DE (1) DE648652C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2165066A1 (en) * 2007-06-15 2010-03-24 Federal-Mogul Corporation Piston and internal combustion engine therewith and method of constructing the piston

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2165066A1 (en) * 2007-06-15 2010-03-24 Federal-Mogul Corporation Piston and internal combustion engine therewith and method of constructing the piston
EP2165066A4 (en) * 2007-06-15 2010-10-27 Federal Mogul Corp Piston and internal combustion engine therewith and method of constructing the piston
US8020530B2 (en) 2007-06-15 2011-09-20 Federal-Mogul Corporation Piston and internal combustion engine therewith and method of constructing the piston

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