DE648652C - Piston protection device for internal combustion engines - Google Patents
Piston protection device for internal combustion enginesInfo
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title description 3
- 230000035515 penetration Effects 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 6
- 238000004880 explosion Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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
- F02F3/28—Other 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)
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)
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 |
-
0
- DE DEA77385D patent/DE648652C/en not_active Expired
Cited By (3)
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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