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DE921603C - Internal combustion engine pistons made of light metal - Google Patents

Internal combustion engine pistons made of light metal

Info

Publication number
DE921603C
DE921603C DEM12778A DEM0012778A DE921603C DE 921603 C DE921603 C DE 921603C DE M12778 A DEM12778 A DE M12778A DE M0012778 A DEM0012778 A DE M0012778A DE 921603 C DE921603 C DE 921603C
Authority
DE
Germany
Prior art keywords
jacket
combustion engine
internal combustion
spring
light metal
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
DEM12778A
Other languages
German (de)
Inventor
Erhard Schmidt
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.)
Mahle GmbH
Original Assignee
Mahle 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 Mahle GmbH filed Critical Mahle GmbH
Priority to DEM12778A priority Critical patent/DE921603C/en
Application granted granted Critical
Publication of DE921603C publication Critical patent/DE921603C/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 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • F02F3/025—Pistons  having means for accommodating or controlling heat expansion having circumferentially slotted piston skirts, e.g. T-slots
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/04—Resilient guiding parts, e.g. skirts, particularly for trunk pistons

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

Das Patent 863 273 betrifft einen Leichtmetallbrennkraftmaschinenkolben mit längs geschlitztem Mantel und mit in den Mantelschlitz eingreifenden hülsenartigen Federelementen aus Stahl od. dgl., deren Längsachse parallel zum Mantelschlitz verläuft, wobei geschlitzte Federhülsen inden Kolbenmantel derart eingebettet sind, daß ihre zylindrische oder konische Außenfläche sich formschlüssig in den Mantel einfügt. Dabei werden die Federhülsen in den, Kolbenmantel vorzugsweise eingegossen. Es lassen sich verschiedenartige Wirkungen erzielen, indem man z. B. konische Federhülsen verwendet, die an ihrem verjüngten Ende härter federn als an ihrem weiteren Ende. Ebenso kann man derartige Hülsen auch in mehrere Abschnitte unterteilen und diese in ungleich großen Abständen voneinander eingießen, wobei sich ebenfalls eine Anpassung,der Federkraft an die Betriebsverhältnisse erzielen läßt.Patent 863 273 relates to a light metal internal combustion engine piston with a longitudinally slotted jacket and with sleeve-like spring elements made of steel or the like engaging in the jacket slot, the longitudinal axis of which runs parallel to the jacket slot, with slotted spring sleeves being embedded in the piston jacket in such a way that their cylindrical or conical outer surface is positively locked inserts into the coat. The spring sleeves are preferably cast into the piston skirt. Various effects can be achieved by z. B. used conical spring sleeves which spring harder at their tapered end than at their further end. Such sleeves can also be subdivided into several sections and poured in at unequal distances from one another, whereby an adaptation of the spring force to the operating conditions can also be achieved.

Gemäß der Erfin#dung erhält man eine besonders billige und zweckmäßige Bauart derartiger Kolben, indem mandiegeschlitztenHülsen durch Schraubenfedern bildet, die nach dem Eingießen der Federn in den Kolben durch einen eingefrästen Längsschlitz in einzelne Win#dungen zerlegt sind.According to the invention, a particularly cheap and useful one is obtained Design of such pistons, in that the slotted sleeves are formed by helical springs, after the springs have been poured into the piston through a milled longitudinal slot are broken down into individual windings.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes in Fig. i in Ansicht und in Fig. 2 im Querschnitt dargestellt. Es handelt sich um einen sogenannten T-Schlitzkolben, bei dem der Mantel i vom Kopfteil 2 durch zwei Querschlitze 3 teilweise abgetrennt ist und bei dem außerdem die eine Tragfläche des Mantels einen Längsschlitz 4 aufweist. Im Bereich dieses Schlitzes 4 ist der Mantel i wulstartig verstärkt, und in den Wulst ist eine Schraubenfeder 5 fest eingegossen. Der Längsschlitz 4 ist in die Mantelwand und zugleich aucl-i in die Schraubenfeder nachträglich eingefräst.In the drawing, an embodiment of the subject matter of the invention is shown in FIG. 1 in a view and in FIG. 2 in cross section. It is a so-called T-slotted piston, in which the jacket i is partially separated from the head part 2 by two transverse slots 3 and in which one supporting surface of the jacket also has a longitudinal slot 4. In the area of this slot 4, the jacket i is reinforced in the manner of a bead, and a helical spring 5 is firmly cast into the bead. The longitudinal slot 4 is subsequently milled into the jacket wall and at the same time also into the helical spring.

Claims (1)

PATENTANSPRUCII. Brennkraftmaschinenkolben aus Leichtmetall mit längs geschlitztem Mantel und mit in den, Mantelteil eingreifenden hülsenartigen Federelementen aus Stahl od. dgl., deren Längsachse parallel zum Mantelschlitz verläuft, wobei geschlitzte Fed#erhülsen in den Kolbenmantel derart eingebettet sind, daß ihre zylindrische oder konische Außenfläche sich formschlüssig in den Mantel einfügt, nach Patent 863 273, dadurch gekennzeichnet, daß die geschlitzte Federhülse durch eine Schraubenfeder gebildet ist, die nach dem Eingießen in den Kolben durch einen ein' gefrästen Längsschlitz in einzelne Windungen zerlegt ist.PATENT CLAIM II. Internal combustion engine pistons made of light metal with a longitudinally slotted jacket and with sleeve-like spring elements made of steel or the like engaging in the jacket part, the longitudinal axis of which runs parallel to the jacket slot, with slotted spring sleeves being embedded in the piston jacket in such a way that their cylindrical or conical outer surface is positively locked inserts into the jacket, according to patent 863 273, characterized in that the slotted spring sleeve is formed by a helical spring which, after being poured into the piston, is divided into individual turns by a milled longitudinal slot.
DEM12778A 1952-02-01 1952-02-01 Internal combustion engine pistons made of light metal Expired DE921603C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM12778A DE921603C (en) 1952-02-01 1952-02-01 Internal combustion engine pistons made of light metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM12778A DE921603C (en) 1952-02-01 1952-02-01 Internal combustion engine pistons made of light metal

Publications (1)

Publication Number Publication Date
DE921603C true DE921603C (en) 1954-12-23

Family

ID=7296088

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM12778A Expired DE921603C (en) 1952-02-01 1952-02-01 Internal combustion engine pistons made of light metal

Country Status (1)

Country Link
DE (1) DE921603C (en)

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