DE266053C - - Google Patents
Info
- Publication number
- DE266053C DE266053C DENDAT266053D DE266053DA DE266053C DE 266053 C DE266053 C DE 266053C DE NDAT266053 D DENDAT266053 D DE NDAT266053D DE 266053D A DE266053D A DE 266053DA DE 266053 C DE266053 C DE 266053C
- Authority
- DE
- Germany
- Prior art keywords
- piston
- piston body
- base plate
- combustion
- rest
- 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.)
- Active
Links
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000002585 base Substances 0.000 description 2
- 239000012458 free base Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000126 substance Substances 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
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die Wärmetheorie lehrt, daß die Verbrennung eines Stoffes um so schneller und vollkommener erfolgt, je höher der Druck und die Temperatur sind, mit denen sie eingeleitet wird. Bei Verbrennungsmaschinen ist eine möglichst vollkommene Verbrennung erwünscht. Der Druck, der im Augenblick der Verbrennung vorhanden ist, ist jedoch beschränkt durch die Abmessungen der Verbrennungsmaschinen und die Reibungsverluste, die Temperatur durch die Haltbarkeit der Wände des Verbrennungsraumes, des Kolbens, Zylinders und Zylinderkopfes, von denen die letzten beiden durch Wasser gekühlt werden.The theory of heat teaches that the combustion of a substance is all the faster and more perfect occurs the higher the pressure and temperature at which it is initiated. With internal combustion engines is one As complete a combustion as possible is desired. The pressure at the moment of the burn is present, but is limited by the dimensions of the internal combustion engines and the friction losses, the temperature due to the durability of the walls of the combustion chamber, the piston, the cylinder and cylinder head, the latter two of which are water-cooled.
Die Kühlung des Kolbens geschieht meistens nur durch Luft, wobei sich der Kolbenboden in der Mitte am stärksten erhitzt, während er am Rande durch die Berührung mit den wassergekühlten Zylinderwänden kühler bleibt.The piston is usually only cooled by air, whereby the piston crown is located most heated in the middle, while at the edge by contact with the water-cooled cylinder walls stays cooler.
ao Die Folge hiervon sind starke Spannungen, die manchmal die Elastizitätsgrenze überschreiten. Risse sind die Folge.ao The consequence of this is strong tensions that sometimes exceed the elastic limit. Cracks are the result.
Diesen Ubelstand vermeidet die Erfindung dadurch, daß der Kolbenboden nur in der Mitte mit dem eigentlichen Kolbenkörper verbunden ist, während er im übrigen frei ist und sich unabhängig vom Kolbenkörper ausdehnen kann. Damit hierbei kein unzulässiger Druck gegen die Zylinderwände entsteht, wird der Bodenteil im Durchmesser zweckmäßigThis Ubelstand avoids the invention in that the piston head only in the Middle is connected to the actual piston body, while it is free for the rest and can expand independently of the piston body. So this is not an inadmissible one Pressure against the cylinder walls arises, the bottom part is appropriate in diameter
kleiner gehalten als der übrige Kolbenkörper.kept smaller than the rest of the piston body.
Die Zeichnung stellt die Erfindung für drei verschiedene Kolbenformen als Beispiel dar. Der Spalt α trennt, wie ersichtlich, die Bodenplatte b vom eigentlichen Kolbenkörper c, so daß Bodenplatte b und Kolbenkörper c nur in der Mitte des Kolbens miteinander in Verbindung stehen. Es ergeben sich hierdurch folgende Vorteile:The drawing shows the invention for three different piston shapes as an example. As can be seen, the gap α separates the base plate b from the actual piston body c, so that the base plate b and piston body c are only connected to one another in the center of the piston. This results in the following advantages:
Die fast freie Bodenplatte wird gleichmäßig heiß, da sie nur in der Mitte, wo bisher der Kolbenboden gerade am heißesten wurde, Wärme an den Kolbenkörper abgibt. Diese Wärmeabgabe ist aber gering, da der Übergangsquerschnitt klein ist. Es folgt hieraus eine bedeutend bessere Haltbarkeit des Kolbens, geringere Wärmeübertragung auf den Kolbenkörper und daher vor allem kühlere Kolbenringe, da sie durch die Platte b vor den heißen Gasen geschützt werden. Schließlieh ergibt sich höhere Temperatur im Verbrennungsraum, da der Kolben weniger Wärme abführt, so daß die Verbrennung und Zündung auch der schwersten Brennstoffe bei kleinen Leistungen sicher erreicht wird.The almost free base plate becomes evenly hot, since it only gives off heat to the piston body in the middle, where the piston crown has just been the hottest up to now. However, this heat dissipation is low because the transition cross-section is small. This results in a significantly better durability of the piston, less heat transfer to the piston body and therefore, above all, cooler piston rings, since they are protected from the hot gases by the plate b. Finally, there is a higher temperature in the combustion chamber, since the piston dissipates less heat, so that the combustion and ignition of even the heaviest fuels is reliably achieved with low power.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE266053C true DE266053C (en) |
Family
ID=523229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT266053D Active DE266053C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE266053C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE927843C (en) * | 1950-09-07 | 1955-05-20 | Hans Dipl-Ing Cramer | Pistons for high pressure piston machines |
DE932463C (en) * | 1951-09-13 | 1955-09-01 | Viktor Dr-Ing Rembold | Pistons and cylinder covers for internal combustion engines |
DE1002989B (en) * | 1953-10-24 | 1957-02-21 | Arnold Tross Dipl Ing Dr Ing | For internal combustion engines, a poppet valve, in particular an exhaust valve, and a method for producing the same |
DE1294741B (en) * | 1965-03-06 | 1969-05-08 | Ernst Dr Ing | Pistons for reciprocating internal combustion engines |
-
0
- DE DENDAT266053D patent/DE266053C/de active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE927843C (en) * | 1950-09-07 | 1955-05-20 | Hans Dipl-Ing Cramer | Pistons for high pressure piston machines |
DE932463C (en) * | 1951-09-13 | 1955-09-01 | Viktor Dr-Ing Rembold | Pistons and cylinder covers for internal combustion engines |
DE1002989B (en) * | 1953-10-24 | 1957-02-21 | Arnold Tross Dipl Ing Dr Ing | For internal combustion engines, a poppet valve, in particular an exhaust valve, and a method for producing the same |
DE1294741B (en) * | 1965-03-06 | 1969-05-08 | Ernst Dr Ing | Pistons for reciprocating internal combustion engines |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60207239T2 (en) | DIRECTLY ACTUATED INJECTION VALVE | |
DE102005003209A1 (en) | Spark ignited internal combustion engine has spark plug having ignition chamber positioned within combustion chamber external of cylinder head attached to block | |
DE266053C (en) | ||
US5816202A (en) | High efficiency explosion engine with a double acting piston | |
SU489355A3 (en) | Internal combustion engine | |
DE1576404A1 (en) | Internal combustion engine cylinders | |
CH206806A (en) | Uncooled piston for internal combustion engines. | |
DE4227699C2 (en) | Device for variable adjustment of the compression ratio for piston internal combustion engines | |
US2136416A (en) | Piston | |
US2320526A (en) | Combustion engine | |
DE3150919C2 (en) | ||
DE347932C (en) | Medium pressure internal combustion engine | |
US1772742A (en) | Internal-combustion engine | |
DE536592C (en) | Air-compressing injection engine for four- or two-stroke | |
GB1364508A (en) | Combustion system for internal combustion engine | |
DE380538C (en) | Explosion engine with a combustion chamber above the cylinder | |
GB495218A (en) | Improvements in or relating to means for varying the compression ratio of compression-ignition oil engines | |
SU406761A1 (en) | SCREW PRESS MOLOT | |
ES482188A1 (en) | Oil-cooled Piston | |
DE384890C (en) | Combined Combustion and Compound Steam Engine | |
DE951964C (en) | Internal combustion engine with hanging inlet and outlet valves | |
US1656770A (en) | Valve mechanism for internal-combustion engines | |
DE3146245C2 (en) | ||
AT92711B (en) | United gas and steam engine. | |
DE2908071A1 (en) | IC engine with precombustion chamber - has insert in cylindrical recess of cylinder head with insulating gaps at either end of insert |