DE522616C

DE522616C - Slotted sealing rings located in one and the same piston ring groove, in particular on internal combustion engines for dust-like fuels

Info

Publication number: DE522616C
Application number: DEP59217D
Authority: DE
Original assignee: RUDOLF PAWLIKOWSKI DIPL ING
Current assignee: RUDOLF PAWLIKOWSKI DIPL ING
Priority date: 1928-12-09
Filing date: 1928-12-09
Publication date: 1931-04-11

Description

Die Erfindung bezieht sich auf in ein und derselben Kolbenringnut liegende geschlitzte Dichtungsringe, insbesondere an Brennkraftmaschinen für staubförmige Brennstoffe, und besteht darin, daß an jedem Dichtungsring mindestens zwei Nasen vorgesehen sind, die auf beiden Seiten und in der Nähe des Schlitzes des benachbarten Ringes liegen und mit seitlichem Spiel in Nuten desselben eingreifen und bei Abnutzung die Ausdehnung dieses Ringes nach außen begrenzen.The invention relates to slotted piston ring grooves located in one and the same piston ring groove Sealing rings, in particular on internal combustion engines for pulverulent fuels, and is that at least two lugs are provided on each sealing ring, the on both sides and near the slot of the adjacent ring and engage with lateral play in grooves of the same and when worn, the expansion limit this ring to the outside.

Es ist vorgeschlagen worden, die Dichtungsringe mit einer Nase auf der Rückenfläche anzuordnen, welche in den Nachbarring oder den Kolben eingreift und das Verdrehen der Dichtungsringe verhindert. Die Dichtungsringe gemäß der Erfindung werden zwar auch durch ihre Einrichtung am Verdrehen verhindert, dienen aber in der Hauptsache für einen anderen Zweck.It has been suggested that the sealing rings have a nose on the back surface to arrange which engages in the neighboring ring or the piston and the twisting the sealing rings prevent. The sealing rings according to the invention are admittedly also due to their device on rotation prevented, but mainly serve a different purpose.

Die gewöhnlichen bekannten Ringe nutzen sich beim Betriebe auf ihrer Lauffläche ab, so daß ihre Breite immer schmaler wird. Der Ring dehnt sich dabei unter seiner Federkraft nach außen und legt sich immer dicht an die Zylindereinsatzbüchse an. Sein kleinerer Querschnitt füllt dann nach längerem Betrieb die Kolbennut nicht mehr aus. Die Kompressionsgase entweichen dann leicht, da sie keinen größeren Widerstand mehr finden, und der Ring hat seine Dichtfähigkeit verloren, ist also zwecklos.The usual well-known rings wear out on their running surface during operation, see above that their width becomes narrower and narrower. The ring expands under its spring force to the outside and always lies close to the cylinder insert liner. Its smaller Cross-section then no longer fills the piston groove after prolonged operation. The compression gases then easily escape, as they no longer find any greater resistance, and the ring has lost its sealing ability, so it is pointless.

der Einrichtung gemäß der Erfindung kann ein solches Undichtwerden der Ringe nicht mehr eintreten, da der Ring verhindert ist, sich so weit auszudehnen, daß er die Kolbennut nicht mehr füllt. Versuche haben nämlich ergeben, daß sich die Kolbenringe nur so lange unter ihrer Eigenfederung ausdehnen brauchen, bis sie sich genau in den Zylinder eingelaufen haben, d. h. bis sie genau die runde oder auch unrunde Form der Zylinderbüchse besitzen. Wenn sie sich so eingelaufen haben, liegen sie völlig dicht an der Zylinderlaufbüchse an und dichten sicher ab. Ein 45-weiteres Ausdehnen ist nicht mehr erforderlich, ja sogar insofern schädlich, als dadurch ein unnötiger Verschleiß und weitere Abnutzung der Kolbenringe und der Zylinderbuchse stattfindet. Besonders groß wird die Abnutzung bei Brennpulvermotoren, bei welchen die Verbrennungsgase harte mineralische Bestandteile enthalten, die die Schlcitwirkung erhöhen. Die neue Erfindung ist also besonders bei Brennpulvermaschinen mit Vorteil anzuwenden.of the device according to the invention such leakage of the rings can occur no longer enter, since the ring is prevented from expanding so far that it does the Piston groove no longer fills. Tests have shown that the piston rings only need to expand under their own springiness until they fit exactly into the cylinder have come in, d. H. until they have exactly the round or non-round shape of the cylinder liner own. If they have run in like this, they are completely close to the cylinder liner and seal securely. 45 further stretching is no longer necessary, yes, even harmful in that it leads to unnecessary wear and tear and further wear and tear the piston rings and the cylinder liner takes place. It will be particularly large Wear in fuel powder engines, in which the combustion gases are hard mineral Contain ingredients that affect the Schlcitffekt raise. The new invention is therefore particularly advantageous in fuel powder machines apply.

Sie ist an den Abb. 1 bis 5 dargestellt, und zwar zeigt Abb. 1 eine schaubildliche Ansicht einer Ausführung der Doppelringe,It is shown in Figs. 1 to 5, namely Fig. 1 shows a perspective view a version of the double rings,

Abb. 2 dieselben Ringe im Schnitt,Fig. 2 the same rings in section,

Abb. 3 eine weitere Ausführung der Doppelringe im Schnitt,Fig. 3 a further version of the double rings in section,

Abb. 4 eine andere Ausführung der Doppelringe im Schnitt undFig. 4 shows another embodiment of the double rings in section and

Claims

Fig. 5 shows a modified design of the ring pair. The limited expansion of the piston rings is, as shown in Figs. Ι and 2, achieved in that two piston rings 1 and 2 are used in one Xut and that each ring receives at least two Xases 3, soft in corresponding Xuteii 4 of the counter ring engage with side play 6. While in Fig. 1 and 3 the ring joint 7 is designed with an overlap, according to Fig. 3 the two ring ends 8 and 9 of the rings r and 2 at the joint against a nose 10 of the other ring, which extends to the opposite wall of the piston groove enough. According to Fig. 4, this Xase 10 is only half as high as the rings 1 and 2 are wide, and the ring ends 8 and 9 are offset and form a butt joint 14. 1 described below. The position shown shows the new rings 1 and 2 slightly lifted from one another before entering. During the first period of operation, the outer running surfaces 11 and 12 grind and rub one another in the cylinder and assume exactly the same shape. The rings expand under their own spring pressure, and the edges 13 come closer and closer to the xases 3 until they hit. The overlap at joint 14 is retained. A further expansion of the rings outwards is now prevented, since the two ring ends 8 and 9 can no longer move further apart due to the xases 3. The natural spring pressure of the ring 1 is then absorbed by the xases 3 of the ring 2 and the natural spring pressure of the ring 2 by the xases 3 of the ring 1. Since the external spring pressure is thus canceled, the rings can no longer grind on the cylinder and have an unlimited operating time. They fulfill their sealing purpose. because they have been able to run in exactly in the time given by the game 6 and lie close to the cylinder wall. In all of the embodiments described above, the xases 3 are in the vicinity of the slot in the adjacent ring. According to Fig. 5, the xases 3 are arranged in the vicinity of the slot 14 of their own ring. The effect is exactly the same. The device has the disadvantage, however, that the rings 1 and 2 easily break when they are spread apart and inserted into their Xut. 1JΛT Ii.N TANSl "U Ü CU II:

1. Slotted sealing rings located in one and the same piston ring groove, in particular on internal combustion engines for pulverulent fuels, characterized in that on each sealing ring Γi, 2) at least two lugs (3) are provided are on both sides near the slot (14) of the adjacent Ring and engage with side play (6) in Xuten (4) of the same and limit the outward expansion of this ring when worn.

2. Sealing rings according to claim 1, characterized in that at least two Xasen (3) are provided on each sealing ring (i, 2) , which are on both sides in the vicinity of the slot (14) and with lateral play (6) in grooves (4) des

'Intervene adjacent ring and when worn, the expansion of this ring limit to the outside.

1 sheet of drawings