DE246271C

DE246271C -

Info

Publication number: DE246271C
Application number: DENDAT246271D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- M 246271 KLASSE 46 ö. GRUPPE- M 246271 CLASS 46 Ö. GROUP

Patentiert im Deutschen Reiche vom 15. Juni 1910 ab.Patented in the German Empire on June 15, 1910.

Es sind bereits Ein- und Ausströmventilanordnungen für Explosions- und Verbrennungskraftmaschinen bekannt geworden, bei denen die Ventile konzentrisch angeordnet und mit einem gemeinschaftlichen oder nicht gemeinschaftlichen Sitz versehen sind, wobei das Steuern dieser Ventile durch einen doppelt wirkenden Hebel erfolgt, der diesen Antrieb von einer Stange erhält, die von einer auf derThere are already inlet and outlet valve arrangements for explosion and internal combustion engines become known in which the valves are arranged concentrically and with a common or not common seat are provided, with the control of these valves by a double Acting lever takes place, which receives this drive from a rod, which is from one on the

ίο Nockenwelle des Motors festsitzenden Nockenscheibe bewegt wird.ίο Camshaft of the engine stuck cam disc is moved.

Diese Ventilanordnungen haben den Nachteil, daß während der Eröffnung des Einlaßventils für die Einströmperiode das Geschlossenhalten des Auspuffventils lediglich durch die Spannkraft der diesem zugehörigen Feder erfolgt, was in manchen Fällen, namentlich wenn die Spannkraft der Feder nachläßt, keine genügende Dichtheit gewährleistet.These valve arrangements have the disadvantage that during the opening of the inlet valve keeping the exhaust valve closed for the inflow period only by the clamping force the spring associated with this takes place, which in some cases, especially when the The elastic force of the spring decreases, sufficient tightness is not guaranteed.

Gegenstand der Erfindung ist eine für Explosions- und Verbrennungskraftmaschinen bestimmte Ein- und Ausströmventilanordnung, bei der besagter Übelstand dadurch beseitigt wird, daß die Drehpunkte der auf die Spindel des Einlaßventils einwirkenden Hebel auf dem Ausströmventil selbst angeordnet sind, so daß bei Einwirkung des doppelt wirkenden Hebels auf die die Spindel des Ausströmventils niederdrückenden Hebel durch jenen auch noch das Ausströmventil gegen seinen Sitz gedrückt wird.The invention relates to one intended for explosion and internal combustion engines Inflow and outflow valve arrangement, in which said deficiency is thereby eliminated is that the pivot points of the lever acting on the spindle of the inlet valve on the The discharge valve itself is arranged so that upon action of the double-acting lever on the lever that depresses the spindle of the discharge valve through that also that The discharge valve is pressed against its seat.

Die Zeichnung veranschaulicht beispielsweiseFor example, the drawing illustrates

die Form und die Anordnung der Ventile, des Hebels, der Antriebsstange und der Nockenscheiben, deren Drehbewegung in der üblichen Weise von der Motorwelle aus erfolgt. "the shape and arrangement of the valves, the lever, the actuator stem and the cam disks, the rotation of which takes place in the usual way from the motor shaft. "

Diese Welle und die anderen Teile des Motors (Gestell, Treibstange, Kolben, Zahnräder zum Antrieb der Nockenwelle und Zubehörteile) 'ί sind in der üblichen Weise ausgebildet und auf der Zeichnung nicht dargestellt.This shaft and the other parts of the motor (frame, drive rod, piston, gear wheels for driving the camshaft and accessories) ί 'are formed in the usual manner and not shown in the drawing.

In Fig. ι bezeichnet 0 den mit einem Wasserkühlmantel ι versehenen Zylinder. Die Öffnung des Zylinderbodens ist durch einen Deckel 2 verschlossen, der mittels auf der Zeichnung. nicht dargestellter Flansche und Schrauben festgehalten wird.In Fig. Ι 0 denotes the with a water cooling jacket ι provided cylinder. The opening of the cylinder base is through a cover 2 locked by means of the drawing. not shown flanges and screws is being held.

Dieser Deckel ist achsial mit einer zylindrischen Bohrung versehen, die mit zwei übereinander angeordneten ringförmigen Aussparungen in Verbindung steht. Von diesen Aussparungen dient die untere, 3, für den Auspuff, die obere, 4, für die Ansaugung. Die beiden Aussparungen stehen mittels eines Auspuffkanal s 5 und eines Saugkanals 6 mit der Außenseite in Verbindung.This cover is axially provided with a cylindrical bore with two on top of each other arranged annular recesses is in communication. From these recesses the lower one, 3, is used for the exhaust, the upper, 4, for the intake. The two recesses are in communication with the outside by means of an exhaust duct 5 and a suction duct 6.

Die zentrale Bohrung des Deckels enthält ein Ventil 7, welches mit geringer Reibung in ihr gleitet, und dessen nach außen ausladende Ränder sich gegen die ausgeschliffene Innenfläche des Deckels legen.The central bore of the lid contains a valve 7 which has low friction in it slides, and its outwardly protruding edges against the ground inner surface of the lid.

Das Ventil 7 ist hohl ausgebildet und weist eine Scheidewand 8 auf, die im Bereich des oberen Teiles des ringförmigen Saugraumes 4 sich befindet. Unterhalb dieser Scheidewand sind in der Ventilwandung Öffnungen 9 vorgesehen, welche die Verbindung mit der Saugöffnung herstellen.The valve 7 is hollow and has a partition 8, which is in the area of the upper part of the annular suction chamber 4 is located. Below that partition Openings 9 are provided in the valve wall, which the connection with the suction opening produce.

Claims

The upper end of the valve 7 is closed by a cap 10. Between this cap and a spring 11 is connected to the cylinder cover. Due to the tension of this spring, the outwardly widened edges of the Valve 7 pressed against the ground surface of the cylinder cover 2 serving as a valve seat, so that the connection between the cylinder and the exhaust duct is shut off. That Valve 7 is called the exhaust valve in the following.

The spindle goes through this exhaust valve

of the suction valve 12. For this purpose, the Partition wall 8 is provided with a hub 13 which serves as a guide for said spindle.

The suction valve 12 closes the central opening of the exhaust valve 7 on the side of the cylinder, by doing this against the lays ground surface of the lid, as shown in Fig. 1 at 14. The conclusion but can also be caused by the fact that the sealing surface of the suction valve against the likewise ground edge of the discharge valve, as at 15 in FIG. 1 is shown. In both cases, the cylinder is blocked from the Suction side.

The suction valve is pressed against its seat by a spring 16. This spring supports on the one hand against the septum 8 of the exhaust valve and on the other hand against a Crosspiece 17 attached to the spindle of the suction valve.

■■■ These valves are driven by the two-armed lever 18, which is mounted on the support 19 so that it can pivot about the axis 20.

The end of the lever 18 located on the side of the valves is forked and located above the cap 10 of the outflow. valve 7.

Above the ends 21 of this fork (Fig. 2) two small balancers 22, 22 are arranged, whose plane of oscillation is perpendicular to that of the lever 18. The oscillating axes 23 of this small balancers 22, 22 are firmly connected to the cap 10 of the exhaust valve and kick with its other end with the tip - the spindle of the suction valve 12 in contact.

The end of the lever 18 opposite the valve is connected to the rod 25 in an articulated manner (Fig. 1), which rests on the cam disk 26 by means of a roller 27. By a against a fixed point 29 of the motor frame is supported spring 28, the roller 27 kept in constant contact with the profiling of the cam disk.

This requires the spring 28 combined with the arm of the lever 18 to have a moment which is greater than that which is on the other side of the same lever through the spring 16 of the suction valve and the small balancers 22, 22 is caused.

The following description of the mode of operation of the new device assumes that that the piston of the engine assumes the position which corresponds to the beginning of the intake stroke. At this moment moves the rod 25 as a result of the profiling of the cam disk under the action of Spring 28 downwards so that the lever 18 swings and through the ends 21 of its forked end the small balancers 22, 22 are swung so that the suction valve 12 opens. the Fresh gases enter the cylinder through openings 6,4,9, leaving the exhaust valve the exhaust opening as a result of the pressure exerted by the spring 11 and the small balancers 22, 22 exercise, keeps closed.

Towards the end of the suction stroke, the cam disc moves the lever 18 into the horizontal position Position transferred which corresponds to the closed position of both valves. This is followed by the compression stroke, followed by the combustion and expansion without any which change occurs in the closed position of the valves.

At the end of the expansion period, the cam, which lifts the rod 25, the lever 18 swung so that its fork-shaped end against the cover of the exhaust valve pushes and forces the latter to open the exhaust duct through which the burned Gases can now escape.

As it moves, the exhaust valve takes the suction valve with it, which controls the shut-off the connection with the suction channel maintains.

At the end of the exhaust, the rod 25 is moved downward by the spring 28, so that the Lever 18 swings and closes the exhaust port before that of the suction port opens will.

The opening and closing movements of the suction valve and the discharge valve take place accordingly in the usual manner with four-stroke explosive engines.

Patunt Claim:

Control of concentrically arranged inlet and outlet valves for explosion and Internal combustion engines, characterized in that the pivot points of the the spindle (12) of the inlet valve acting double-armed lever (22) on the The discharge valve itself are arranged.

1 sheet of drawings.