DE156010C

DE156010C -

Info

Publication number: DE156010C
Application number: DENDAT156010D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Den Gegenstand der Erfindung bildet eine Steuerung für den Einlaß und Auspuff bei Explosionskraftmaschinen, . welche aus einem gesteuerten Abschlußventil und einem mit diesem Ventil bewegten, die Luft- und Brennstoffkanäle freilegenden Kolbenschieber besteht. Bei dieser Steuerung wird der Kolbenschieber durch den Regler der KraftmaschineThe subject of the invention forms a control for the intake and exhaust Explosion engines,. which consists of a controlled shut-off valve and one with This valve is moved, the air and fuel ducts exposing the piston valve. In this control, the piston valve is controlled by the governor of the engine

ίο achsial verschoben, um während des .Betriebes das Mengenverhältnis von Luft und Brennstoffluftgemisch. zu regeln.ίο shifted axially to during operation the proportion of air and fuel-air mixture. to regulate.

Die Zeichnung veranschaulicht ein Ausführungsbeispiel der Ventilsteuerung, und zwar stellen dieThe drawing illustrates an embodiment of the valve control, and although the

Fig. ι bis 4 senkrechte Längsschnitte durch Ventil und Kolbenschieber nebst dem in Betracht kommenden Teil des Zylinders einer Explosionskraftmaschine dar, währendFig. 1 to 4 vertical longitudinal sections through valve and piston slide together with the one in consideration coming part of the cylinder of an explosion engine, while

Fig. 5 eine Einzelheit, geschnitten nach der Linie A-B der Fig. 2, veranschaulicht.Fig. 5 shows a detail cut along the line AB of Fig. 2, illustrates.

An den Zylinder 6 schließt sich ein Ventilgehäuse 7 an, welches nach der Zylinderseite hin durch ein Ventil 8 abgeschlossen ist.A valve housing 7 adjoins the cylinder 6, which after the cylinder side is completed by a valve 8.

Die Ventilstange 9 wird in bekannter Weise durch einen Daumen 10 nach Maßgabe der aufeinander folgenden Arbeitsperioden stufenweise geöffnet. Die Steuerwelle 11 wird durch ein Rädergetriebe im Verhältnis I : 2 von der Hauptwelle der Kraftmaschine aus angetrieben.The valve rod 9 is in a known manner by a thumb 10 according to the gradually opened in consecutive working periods. The control shaft 11 is by a gear train in the ratio I: 2 from the main shaft of the engine driven.

In das Ventilgehäuse 7 mündet die Luftleitung 12 und die Leitung 13 für das von dem Karburator kommende Brennstoffluftgemisch. Der Raum 14 steht mit der Außenluft in Verbindung und dient hauptsächlich zur Ableitung der Auspuffgase. Die Verbindung der Leitungen 12 und 13 mit dem Innenraum des Ventilgehäuses 7 wird in bekannter Weise durch einen Kolbenschieber 15 geregelt, der für die beiden Leitungen an seinem Umfang gemeinschaftliche Durchlaßkanäle 16 hat. Für den Auspuff sind im Kolbenschieber Kanäle 17 angebracht.In the valve housing 7 opens the air line 12 and the line 13 for the from the fuel-air mixture coming from the carburator. The room 14 is with the outside air in connection and is mainly used to discharge the exhaust gases. The connection the lines 12 and 13 with the interior of the valve housing 7 is known in Way regulated by a piston valve 15, which for the two lines its circumference has common passage channels 16. For the exhaust are im Piston valve channels 17 attached.

Der Schieber 15 ist mit der Ventilstange 9 des Haupt- und Kegelventiles 8 derart verbunden, daß er an der Bewegung der Ventilstange 9 teilnimmt, jedoch auch unabhängig von derselben in der Höhenrichtung verstellt werden kann. Es sitzt nämlich auf der Ventilstange 9 eine an ihrem Umfang mit Schraubengewinde versehene Muffe 18. Eine am Schieber 15 festsitzende, die Ventilstange 9 lose umfassende Muffe 19 ist an ihrem Umfang mit entgegengesetztem Schraubengewinde versehen. Auf beide Muffen 18 und 19 ist eine Mutter 20 aufgeschraubt, die in ihrem unteren Teil dem Gewinde der Muffe 18 und in ihrem oberen Teil dem Gewinde der Muffe 19 angepaßte Schraubengänge hat. Die Mutter 20 sitzt achsial verschiebbar in einem Schraubenrad 21, welches in dem Ventilgehäuse durch einen Lagerring 22 gehalten wird (vergl. insbesondere Fig..5). Damit die Mutter 20 mit dem Schraubenrade 21 gedreht wird, ist sie am Umfang vieleckig gestaltet (vergl. Fig. 5). Ebensogut kann das Schraubenrad mittels eines in einer Längsnut laufenden Führungsstiftes auf die Mutter einwirken. Das Schraubenrad21 steht mit einem Schraubenrad 23 in Eingriff, welches auf der durchThe slide 15 is connected to the valve rod 9 of the main and cone valve 8 in such a way that that he participates in the movement of the valve rod 9, but also independently can be adjusted by the same in the height direction. Because it sits on the Valve rod 9 has a screw-threaded sleeve 18 on its circumference on the slide 15 fixed, the valve rod 9 loosely encompassing sleeve 19 is on its circumference provided with opposite screw thread. Is on both sleeves 18 and 19 a nut 20 screwed, the thread of the sleeve 18 and in its lower part in its upper part has the thread of the sleeve 19 adapted screw threads. the Nut 20 sits axially displaceably in a helical gear 21 which is in the valve housing is held by a bearing ring 22 (cf. in particular Fig..5). So that Nut 20 is rotated with the screw wheel 21, it is designed polygonal on the circumference (see Fig. 5). The helical gear can just as well by means of a wheel running in a longitudinal groove Act on the guide pin on the nut. The helical gear21 stands with a helical gear 23 in engagement, which on the through

Claims

control shaft 24 rotated in one sense or the other by the governor of the engine sits.

In order to prevent the valve rod 9 from twisting, it is provided with a slot 25 provided through which a pin of the housing engages. Similarly, means Pin and guide slot 26 a "twisting of the slide 15 on the valve rod 9

prevented. ■ _:

The effect of this valve control is as follows:

The main or cone valve 8 will correspond to the shape of the eccentric 10 (FIG. 1) more or less open at certain times for a certain duration.

The piston valve 15 regulates this Ratio of the air drawn in and the fuel-air mixture, namely first only air is sucked in and then only as much fuel-air mixture as to maintain the required power output for the next explosion necessary is. The fuel is always drawn in at the same rate Force, so that the composition of the fuel-air mixture sucked in by the carburator remains unchanged.

As the speed of the machine increases, the controller rotates shaft 24 and through this the helical gear 21 in the sense that the nut 20 is on the sleeve

18 screwed down and at the same time the socket

19 pulls into itself on the slide 15. the The controller then assumes the position shown in FIG. Will on it at Exhaust stroke of the working piston, the cylinder space 6 and the interior of the valve housing 7 connected by lifting the valve 8, so the gases can through the channels 17 in the Puff out the piston valve and the space 14 freely. In order to prevent the exhausting Gases also have to make their way through lines 12 and 13 into the related. Connection pipes acting automatically, only towards the machine opening check valves be arranged.

For the following suction period this will be

Valve 8 opened more by cam 10, with slide 15 moving the valve. 8 resp. the valve rod 9 follows. It is now first sucked back fresh air from the line 12 and partially also through the channels 17 previously expelled gas. A fuel-air mixture then flows through line 13 into the cylinder.
If the slide 15 is screwed back to the extreme position by the action of the regulator, the slide 15 only rises so high when the valve rod 9 is sucked that the channels 16 do not expose the fuel air line 13 at all. No fuel-air mixture is sucked in and therefore no ignition can take place in the machine, i.e. the machine cuts out (cf.

However, if the opposite is the case, the adjusting device connected to the controller pushed the slide 15 on the valve pin 9 very far upwards has what position the Fig. 2 and. 4-4 show the valve 8 and the slide 15 according to the shape of the control eccentric IO during the reverse gear of the working piston the exhaust period a position such that the exhaust through the channels 17 without Throttling can take place .. However, it is useful, as is the case with explosion engines is already known, the working cylinder by one in the foremost position of the piston temporarily exposed duct connected directly to the exhaust after the explosion eliminate the strongest tension in the cylinder. . .

Even during the exhaust period, the channels 16 in the slide 15 are connected to the air line 12 such that their connection with the interior of the valve housing almost is canceled. Towards the end of the piston stroke, thumb 10 now turns valve 8 and slide 15 controlled so that little during the suction period only for a short time fresh air through the channels 16 and also sucked back exhaust gases through the Passage channels 17 into the valve housing. Very soon valve 8 and slide 15 will be like this lifted high that the channels 16 in the slide 15 partially with the connecting channels the fuel air line 13 cover and exclusively fuel-air mixture flows into the cylinder (Fig. 4), whereby a in the cylinder very rich explosion gas mixture is produced.

Pate ν τ-A ν s PR υ cn ': ■

United valve and piston slide control for the intake and exhaust. in explosive power machines, characterized in that the piston slide (15), which is controlled together with the closing valve (8), is axially shifted by the controller to during the To regulate the quantity ratio of air and fuel-air mixture during operation.

1 sheet of drawings.