DE449069C - Device for piston cooling by air for two and four stroke engines - Google Patents

Device for piston cooling by air for two and four stroke engines

Info

Publication number
DE449069C
DE449069C DES72788D DES0072788D DE449069C DE 449069 C DE449069 C DE 449069C DE S72788 D DES72788 D DE S72788D DE S0072788 D DES0072788 D DE S0072788D DE 449069 C DE449069 C DE 449069C
Authority
DE
Germany
Prior art keywords
piston
air
stroke engines
piston cooling
cover plate
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
DES72788D
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.)
KARL RENTZSCH
Sportflug fur Mittelf GmbH
Original Assignee
KARL RENTZSCH
Sportflug fur Mittelf GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KARL RENTZSCH, Sportflug fur Mittelf GmbH filed Critical KARL RENTZSCH
Priority to DES72788D priority Critical patent/DE449069C/en
Application granted granted Critical
Publication of DE449069C publication Critical patent/DE449069C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P1/04—Arrangements for cooling pistons

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

Vorrichtung für Kolbenkühlung durch Luft für Zwei- und Viertaktmotoren. Die vorliegende Erfindung betrifft eine Kolbenkühlung durch Luft für Zwei- und Viertaktmotoren mit den Kolbenhohlraum abdeckender Platte, in welcher gegen den Kolbenboden gerichtete Düsen angebracht sind. Von bekannten Einrichtungen unterscheidet sich der Erfindungsgegenstand dadurch, daß für Kolben mit im Innern auf einem Bolzen schwingend gelagerter Pleuelstange in der Abdeckplatte für die Pleuelstange eine düsenartige Mitteldurchtrittsöffnung vorgesehen ist, welche in der Längsrichtung senkrecht zur Kolbenachse ausgebildet ist, um den für die schwingende Pleuelstange nötigen Spielraum zu schaffen. Durch diese Anordnung wird erzielt, daß das im Kolbeninnern befindliche Ende der Pleuelstange und ihr Lager -im Kolbenbolzen durch einen kräftigen Kühlstrom umspült werden, so °daß eine gute Wärmeabführung stattfindet.Device for piston cooling by air for two- and four-stroke engines. The present invention relates to air piston cooling for two and four stroke engines with the piston cavity covering plate, in which directed against the piston crown Nozzles are attached. The subject of the invention differs from known devices in that for pistons with a connecting rod swingably mounted on the inside on a pin a nozzle-like central passage opening in the cover plate for the connecting rod is provided, which is formed in the longitudinal direction perpendicular to the piston axis is to create the necessary clearance for the oscillating connecting rod. By this arrangement is achieved that the end of the connecting rod located in the interior of the piston and their bearings - in the piston pin - are washed around by a powerful stream of cooling, so ° that there is good heat dissipation.

Die Anbringung der Abdeckplatte im unteren Teil des Kolbens geschieht derart, daß das uniere Ende der Kolbenwandung mit Gewinde ,ausgestattet ist und ein mit Gewinde versehener Ring die Abdeckplatte gegen eine an der Innenseite der Wandung angebrachte Schulter drückt und so in ihrer Stellung sichert. Die Zeichnung läßt den Gegenstand der Erfindung in beispielsweiser Ausführungsform erkennen. Abb. i zeigt eine Ausführungsform bei Normalzweitaktmotoren im senkrechten Längsschnitt, Abb. z und 3 den Kolben mit der neuen Abdeckplatte in zwei zueinander senkrechten Schnitten.The cover plate is attached in the lower part of the piston in such a way that the uniere end of the piston wall is threaded and equipped a threaded ring the cover plate against one on the inside of the Wall attached shoulder presses and thus secures in their position. the Drawing reveals the subject matter of the invention in an exemplary embodiment. Fig. I shows an embodiment of normal two-stroke engines in a vertical longitudinal section, Fig. Z and 3 the piston with the new cover plate in two mutually perpendicular Cuts.

Der Kolben a nimmt die Abdeckplatte b auf, wobei die letztere derart ausgebildet ist, daß sie in der Mittelachse eine Durchtrittsöffnung c für die Pleuelstange d aufweist, welche entsprechend den Bewegungen der Pleuelstange länglich. gehalten ist und gegen den Kolbenboden düsenartig verläuft. Beiderseits. dieser Mitteldurchtrittsöffnung c sind weitere Seitendüsen e, f vorgesehen, welche dass Gemisch während des Kompressionshubes gegen den Kolbenboden schleudern und demselben eine ständige Wirbelung erteilen, so daß durch die Anordnung dieser Düsenplatte eine gute Bespülung des Kolbenbodens und damit eine wärmeabführende Wirkung erzielt wird.The piston a receives the cover plate b , the latter being designed in such a way that it has a passage opening c in the central axis for the connecting rod d, which is elongated in accordance with the movements of the connecting rod. is held and runs like a nozzle against the piston crown. On both sides. This central passage opening c further side nozzles e, f are provided, which throw the mixture against the piston head during the compression stroke and give it a constant vortex, so that the arrangement of this nozzle plate a good purging of the piston head and thus a heat dissipating effect is achieved.

Die Befestigung der Abdeckplatte im Kolben geschieht dadurch, daß in der Kolbenwandung am unteren Ende ein Gewinde vorgesehen ist, welches einen mit Gewinde ausgestatteten Ring h aufnimmt, der die Plätte gegen eine Schulter g drückt und so in ihrer Lage sichert.The attachment of the cover plate in the piston is done in that a thread is provided in the piston wall at the lower end, which one with Thread equipped ring h receives, which presses the plate against a shoulder g and so secures in their position.

Claims (1)

PATENTANSPRÜCHE: i. Vorrichtung für Kolbenkühlung durch Luft für Zwei- und Viertaktmotoren mit den Kolbenhohlraum abdeckender Platte, in welcher gegen den Kolbenboden gelichtete Düsen angebracht sind, dadurch gekennzeichnet, daß die Abdeckplatte (b) mit einer düsenartigen Mitteldurchtrittsöffnung (c) für die Pleuelstange (d) versehen äst. z, Vorrichtung für Kolbenkühlung nach Anspruch i, idadurch gekennzeichnet, daß am unteren Ende der Kolbenwandung an der Innenseite derselben -ein Gewinde vorgesehen und eine Schulter (g) angeordnet ist, ;gegen welche die Abdeckplatte (b) mittels seines mit Gewinde ausgestatteten Ringes (h) gedrückt und gesichert wird. PATENT CLAIMS: i. Device for piston cooling by air for two- and four-stroke engines with a plate covering the piston cavity, in which nozzles cleared against the piston crown are attached, characterized in that the cover plate (b) is provided with a nozzle-like central passage opening (c) for the connecting rod (d) . z, device for piston cooling according to claim i, characterized in that at the lower end of the piston wall on the inside of the same -a thread is provided and a shoulder (g) is arranged, against which the cover plate (b) by means of its threaded ring ( h) is pressed and secured.
DES72788D 1925-12-25 1925-12-25 Device for piston cooling by air for two and four stroke engines Expired DE449069C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES72788D DE449069C (en) 1925-12-25 1925-12-25 Device for piston cooling by air for two and four stroke engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES72788D DE449069C (en) 1925-12-25 1925-12-25 Device for piston cooling by air for two and four stroke engines

Publications (1)

Publication Number Publication Date
DE449069C true DE449069C (en) 1927-08-31

Family

ID=7503476

Family Applications (1)

Application Number Title Priority Date Filing Date
DES72788D Expired DE449069C (en) 1925-12-25 1925-12-25 Device for piston cooling by air for two and four stroke engines

Country Status (1)

Country Link
DE (1) DE449069C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523699A (en) * 1946-08-21 1950-09-26 Harry Ralph Ricardo Piston
DE966673C (en) * 1952-07-17 1957-08-29 Stihl Maschf Andreas Piston cooling in two-stroke diesel engines
DE1035968B (en) * 1953-06-26 1958-08-07 Kloeckner Humboldt Deutz Ag OE catching device for internal combustion engines
US4142484A (en) * 1975-09-05 1979-03-06 Daimler-Benz Aktiengesellschaft Piston for internal combustion engine
DE3643039A1 (en) * 1986-12-17 1988-06-30 Mahle Gmbh COOLABLE SUBMERSIBLE PISTON FOR COMBUSTION ENGINES
DE4039752A1 (en) * 1990-12-13 1992-06-17 Mahle Gmbh Multi-part oil-cooled piston for IC engine - has ring-shaped hollow chamber in head part for cooling oil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523699A (en) * 1946-08-21 1950-09-26 Harry Ralph Ricardo Piston
DE966673C (en) * 1952-07-17 1957-08-29 Stihl Maschf Andreas Piston cooling in two-stroke diesel engines
DE1035968B (en) * 1953-06-26 1958-08-07 Kloeckner Humboldt Deutz Ag OE catching device for internal combustion engines
US4142484A (en) * 1975-09-05 1979-03-06 Daimler-Benz Aktiengesellschaft Piston for internal combustion engine
DE3643039A1 (en) * 1986-12-17 1988-06-30 Mahle Gmbh COOLABLE SUBMERSIBLE PISTON FOR COMBUSTION ENGINES
DE4039752A1 (en) * 1990-12-13 1992-06-17 Mahle Gmbh Multi-part oil-cooled piston for IC engine - has ring-shaped hollow chamber in head part for cooling oil

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