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DE357464C - Pistons for high-speed thermal engines - Google Patents

Pistons for high-speed thermal engines

Info

Publication number
DE357464C
DE357464C DEM62963D DEM0062963D DE357464C DE 357464 C DE357464 C DE 357464C DE M62963 D DEM62963 D DE M62963D DE M0062963 D DEM0062963 D DE M0062963D DE 357464 C DE357464 C DE 357464C
Authority
DE
Germany
Prior art keywords
piston
pistons
speed thermal
thermal engines
cooling
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
DEM62963D
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEM62963D priority Critical patent/DE357464C/en
Application granted granted Critical
Publication of DE357464C publication Critical patent/DE357464C/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 
    • F02F3/16—Pistons  having cooling means
    • F02F3/20—Pistons  having cooling means the means being a fluid flowing through or along piston
    • F02F3/22—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (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 schnellaufende Wärmekraftmaschinen. Die Erfindung betrifft einen Kolben für schnellaufende Wärmekraftmaschinen. Es ist bekannt, bei größeren Abmessungen und Kolbengeschwindigkeiten die Kühlung durch zwangläufig zirkulierendes Öl zu bewirken. Diese Anordnung hat den Nachteil, daß das Öl bei Stillstand des Motors nicht mehr zirkuliert und infolgedessen Abscheidungen auf den Kolbenboden verursacht; die die Wärmeübertragung erschweren und besondere Einrichtungen erforderlich machen, die auch nach dem Abstellen des Motors ein Weiterzirkulieren des Öles ermöglichen sollen. Gemäß der vorliegenden Erfindung wird wieder auf die Kühlung mit Luft zurückgekehrt, wie sie bei kleineren Motoren üblich ist. Da aber die Kühlwirkung der Luft bedeutend geringer ist als die des Öles, genügt die Oberßäche des Kolbens nicht als Kühlfläche. Eine genügend große Kühlfläche kann nur durch Anbringung von Rippen erreicht werden. Nun ist aber die Wärmeleitfähigkeit von Eisen oder ähnlichen Materialien, aus denen der Kolbenboden bisher hergestellt wurde, so gering, daß von einer bestimmten Länge der Rippen ab eine weitere Vergrößerung derselben keine Vergrößerung der Wärmeleitung zur Folge hat. Demgemäß besteht die Erfindung darin, daß in den Kolben ein mit Kühlrippen versehener Boden aus Aluminium eingesetzt ist.Pistons for high-speed heat engines. The invention relates to a piston for high-speed heat engines. It is known for larger ones Dimensions and piston speeds the cooling by inevitably circulating Effect oil. This arrangement has the disadvantage that the oil when the Engine no longer circulates and as a result deposits on the piston crown caused; which complicate the heat transfer and require special facilities make that allow the oil to continue to circulate even after the engine has been switched off should. According to the present invention, a return is made to cooling with air, as is common with smaller engines. But since the cooling effect of the air is significant is less than that of the oil, the surface of the piston is not sufficient as a cooling surface. A sufficiently large cooling surface can only be achieved by attaching ribs. Now, however, is the thermal conductivity of iron or similar materials that make up the piston crown was previously made so small that of a certain length of the ribs from a further enlargement of the same no enlargement of the heat conduction has the consequence. Accordingly, the invention is that in the piston with a cooling fins provided floor made of aluminum is used.

Die Erfindung ist auf der Zeichnung in zwei Abbildungen in zwei zueinander senkrechten Projektionen dargestellt.The invention is on the drawing in two figures in two to each other vertical projections shown.

In den Kolben a ist ein mit Kühlrippen d versehener Kolbenboden b aus Aluminium mittels Gewinde hineingeschraubt, so daß sich die Kühlrippen gegen den Boden c des Kolbens a legen.A piston head b made of aluminum and provided with cooling fins d is screwed into the piston a by means of a thread so that the cooling fins lie against the head c of the piston a.

Nachdem der Deckel b eingeschraubt ist, wird die Gewindestelle durch Walzen oder ein ähnliches Verfahren fest verstemmt. Man kann auch den Kolbenboden b mittels Schrauben. befestigen, wobei berücksichtigt werden muß, daß auch ein guter Wärmeübergang des Kolbens b direkt nach der Kolbenlaufbahn stattfindet.After the cover b is screwed in, the thread point is through Rolling or similar process firmly caulked. You can also use the piston crown b by means of screws. fasten, taking into account that also a good one Heat transfer of the piston b takes place directly after the piston raceway.

Claims (1)

PATENTANSPRUCH: Kolben für schnellaufende Wärmekraftmäschinen, dadurch gekennzeichnet, daß in den Kolben ein mit Kühlrippen versehener Boden aus Aluminium eingesetzt ist.PATENT CLAIM: Piston for high-speed thermal power machines, thereby characterized in that in the piston a bottom made of aluminum provided with cooling fins is used.
DEM62963D Pistons for high-speed thermal engines Expired DE357464C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM62963D DE357464C (en) Pistons for high-speed thermal engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM62963D DE357464C (en) Pistons for high-speed thermal engines

Publications (1)

Publication Number Publication Date
DE357464C true DE357464C (en) 1922-08-25

Family

ID=7310636

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM62963D Expired DE357464C (en) Pistons for high-speed thermal engines

Country Status (1)

Country Link
DE (1) DE357464C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767555C (en) * 1936-03-25 1952-11-24 Josef Wolfenstetter Dipl Ing Plungers for heavy internal combustion engines
DE1207152B (en) * 1959-10-02 1965-12-16 Schmidt Gmbh Karl Fluid-cooled piston of forged or pressed design for internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767555C (en) * 1936-03-25 1952-11-24 Josef Wolfenstetter Dipl Ing Plungers for heavy internal combustion engines
DE1207152B (en) * 1959-10-02 1965-12-16 Schmidt Gmbh Karl Fluid-cooled piston of forged or pressed design for internal combustion engines

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