DE333371C

DE333371C - Sealing ring for pistons on internal combustion engines with lubricating oil chambers

Info

Publication number: DE333371C
Application number: DE1920333371D
Authority: DE
Original assignee: MC QUAY NORRIS Manufacturing Co
Current assignee: MC QUAY NORRIS Manufacturing Co
Priority date: 1915-03-18
Filing date: 1920-07-10
Publication date: 1921-02-23

Description

Vorliegende Erfindung"- bezieht sich auf einen Packungsring für Kolben von Gasmaschinen, bei welchen es wichtig ist, zu verhindern, daß das Schmieröl, welches als dünne Schicht über die inneren Wände des Zylinders verteilt ist (infolge Verspritzens von dem Kurbelgehäuse·) ib die Verbrennungsoder Explosionskammer der Maschine eintritt. Jede Anwesenheit von öl in der Ex- · plosionskammer verursacht ungleichförmige Explosionen. Außerdem erzeugt der Rückstand verbrannten Öles in dieser Kammer eine Wärmeisolationsschicht oder einen Niederschlag auf den Kammerwänden, welcher eine wirksame Kühlung derselben verhindert und infolgedessen den Betrieb der Maschine stört und ihre Leistung herabsetzt. Die Erfindung bezweckt, den Kolben -mit einem Packungsring (oder mehreren Ringen) auszurüsten, welcher das Schmiermittel daran verhindert, in dfe Explosionskammer einzutreten, wodurch gleichförmige Explosionen und ein hoher Leistungsgrad erreicht wird, ölabstreifende Kolbenringe sind bekannt, diese bekannten Kolbenringe wirken jedoch nur mit ihren Außenkanten.Present Invention "- relates to a packing ring for pistons of gas engines, where it is important to prevent that the lubricating oil, which as a thin layer over the inner walls of the cylinder is distributed (as a result of splashing from the crankcase) ib the combustion or explosion chamber of the engine enters. Any presence of oil in the explosion chamber causes non-uniform Explosions. In addition, the residue of burnt oil in this chamber creates a layer of thermal insulation or a precipitate on the chamber walls, which prevents effective cooling of the same and as a result disrupts the operation of the machine and degrades its performance. the The aim of the invention is to equip the piston with a packing ring (or several rings), which prevents the lubricant from entering the explosion chamber, whereby uniform explosions and a high degree of efficiency are achieved, Oil-wiping piston rings are known, but these known piston rings work only with their outer edges.

Der Erfindung gemäß werden die ölkammern des Dichtungsringes so gestaltet, daß sie gegen den Verbrennungsraum abgeschlossen, nach der Kttrbelseite aber offen sind. Gemäß einer Ausführungsform der Erfindung endet "die an der Seite des Verbrennungsraumes liegende — die abstreichende — Kante in der Umfangsfläche des Dichtungsringes, während die an der Kurbelseite liegende Kante zurücktritt. Die Begrenzungsiwände der· Kammer konvergieren hierbei zweckmäßig nach, der Seite des Verbrennungsraumes. 'According to the invention, the oil chambers of the sealing ring designed in such a way that it is closed off from the combustion chamber, but are open on the belt side. According to one embodiment of the Invention ends "on the side of the combustion chamber lying - the scraping - edge in the circumferential surface of the Sealing ring, while the edge on the crank side recedes. The boundary walls The chamber converge expediently towards the side of the combustion chamber. '

Zur Erläuterung der Erfindung dienen die Zeichnungen, in welchen zeigenTo explain the invention, the drawings serve, in which show

Fig. ι einen mittleren Längsschnitt durch einen Gasmaschinenzylinder, wobei der Kolben in Ansicht dargestellt und mit zwei Dichtungsringen gemäß der Erfindung ausgerüstet ist,Fig. Ι a central longitudinal section through a gas engine cylinder, the piston shown in view and equipped with two sealing rings according to the invention is,

Fig. 2 einen Grundriß des Dichtungsringes;Fig. 2 is a plan view of the sealing ring;

Fig. 3 zeigt den Dichtungsring von der Seite gesehen;Fig. 3 shows the sealing ring seen from the side;

Fig. 4 ist ein vergrößerter Querschnitt;Fig. 4 is an enlarged cross section;

Fig. 5 ist der Grundriß einer anderen Ausführungsform des Ringes, nach welcher der Ring· konzentrisch anstatt exzentrisch wie in Fig. 2 gestaltet ist.Fig. 5 is a plan view of another embodiment of the ring according to which the Ring is designed concentrically instead of eccentrically as in FIG.

In Fig. ι bis 4 bezeichnet C den Maschinenzylinder und P seinen Kolben, der nach der Darstellung der Zeichnung mit drei Packungsringen versehen ist. Jeder Packungsring besteht aus einem durch Schlitzung federnden Ring I, welcher in üblicher Weise in die ringförmige Nut h eingelegt ist. Der Ring besteht aus ausdehnungsfähigem Material und legt sich gegen die Zylinderwand an, wenn der Kolben in den Zylinder eingesetzt ist.In Fig. 1 to 4, C denotes the machine cylinder and P its piston, which is provided with three packing rings according to the representation of the drawing. Each packing ring consists of a resilient ring I which is slotted and which is inserted into the annular groove h in the usual way. The ring is made of expandable material and rests against the cylinder wall when the piston is inserted into the cylinder.

Claims

Along the outer cylindrical surface of the ring and adjacent to that ring edge which faces the crankcase (not shown in the drawing), d. H. adjacent to the outer lower edge of the ring is a channel-like container a, the walls of which terminate in a sharp cutting edge e, of which the edge e forms the upper and the edge e 'forms the lower ίο (assuming that the piston on the working stroke moves downwards, Fig. 4). The edge e brushes the inner cylinder wall on the downward working stroke of the piston and thus wipes the oil layer off the cylinder wall. The scraped-off oil passes the edge e 'through the annular space d between the cylinder wall and the edge e' into the collecting space α. The walls of the collecting space α are inclined to the ring axis (only the lower edge needs to be inclined), so that during the upward movement of the piston, the oil collected in the container during the working stroke is released and distributed over the cylinder wall. The inclination of the lower wall of the chambers serves to cause an even distribution of the oil which is scraped off on the upstroke and to guide it over the edge e 'against the cylinder wall and to distribute it on it. So that the edge e 'can guide the accumulated oil against the cylinder walls, the edge must coincide with the circumference of the piston head (Fig. 4) so that no substantial amount of oil remains on the lower wall of the groove h in which the packing ring is mounted. Preferably the grazing edge is <? ' (Fig. 4) arranged essentially in the plane of the adjacent side of the ring, although a slight deviation from this position would not affect the purpose of the invention. The bottom of the chamber α is located in an upper plane rearward of the cutting edge e (Fig. 4). In order for the outer cylindrical surface of the ring to contact the inner wall of the cylinder uniformly, the ring is somewhat eccentric so that it is more resilient than the concentric ring shown in FIG. P ATEN τ- claims:

1. Sealing ring for pistons on \ ^r erbrennungskraftmaschinen with oil chambers, characterized in that the oil chambers closed off from the combustion chamber to the crank side, but are open.

2. Sealing ring according to claim 1, characterized in that "the lying on the side of the combustion chamber - the scraping - edge (s) ends in the circumferential surface of the sealing ring, while 'the ari" T3ef crank side lying -edge {e') resigns.

3. Sealing ring according to claim and 2, "" characterized in that the boundary walls of the chambers (a) converge towards the side of the combustion chamber.

1 sheet of drawings.