DE382115C - Injection carburetor for explosion engines with several mixture formation stages - Google Patents

Description

GERMAN EMPIRE

ISSUED AW SEPTEMBER 28, 1923

REICH PATENT OFFICE

PATENT LETTERING

- M 382 115 CLASS 46 c GROUP

(S5421g Ij46c *)

Patented in the German Empire on September 14, 1920.

The invention relates to an injection carburetor for explosion engines with several mixture formation stages in which to increase the voltage drop across the Fuel outflow mouth several coaxially arranged Venturi tubes use find the fuel-air mixture of the first stage in the smallest Venturi tube feeding channel opens. The arrangement is essentially made so that the smallest venturi a chamber is arranged, which over the supply channel for the mixture of the first stage is kept permanently filled with fuel up to a small distance from the injection openings and in this way forms a kind of storage container. The small venturi is tight over its narrowest cross-section a sharply pronounced expansion in which the Spray openings or a spray slot are attached.

The drawing shows two embodiments of the carburetor, namely in
Fig. Ι and 2 a vertical and in

Fig. 3 and 4 show a horizontal carburetor.

Fig. Ι shows a vertical section

AA, BB, CC of Fig. 2, which shows a horizontal section in the plane DD of the constant liquid level of the vertical gasifier.

Fig. 3 shows a section in a middle, horizontal plane of the horizontal Carburetor while

Fig. 4 shows a vertical section along the line EE in Fig. 3.

A container 1 of conventional design with a uniform liquid level provides the Fuel in the feed channel 2 for the two injection openings 10 and 11. The injection opening 11 forms the compensation opening located below the liquid level, while the Spray opening 10 as the main opening is in the plane of the liquid level or something located above the same. Both openings open into the interior of the vertical shaft 5.

Coaxially to the shaft 5, a pipe 6 is arranged in the interior thereof, which is provided with various small holes. In the interior of the tube 6 is immersed an elongated tube 7 which is attached to the screw plug 8. A ventilation opening 23 connects the inside of the pipe 6 with the outside air.

The Venturi tubes 16 and 17 are from the feed pipe 14 for the mixture first stage worn, which on the one hand in the annular space between the tube 6 and the Wall of the shaft 5 and on the other hand opens into an annular space 15 which is in the wall 6j

Claims (3)

of the small Yenturi tube 16 is provided. Behind its narrowest cross-section, the small Venturi tube has a sharply defined one Extension to into which the injection openings iy of the second stage or in the execution according to Fig. 3 and 4 a spray slot 19 ', which is above the horizontal plane of the Venturi tube is arranged to open. The small venturi 16 or outflow venturi opens with its outlet in the Constriction of a somewhat larger \ * enturi tube 17, which is called an "atomizing venturi tube" can be designated and on the venturi 16 by lugs 18 (Fig. 1 and 3) is attached. This Venturi tube 17 opens into the constriction point of a Yenturi tube for the air inlet or ordinary Alischrohres 12, which is attached to a suitable Place of the carburetor body 13 is attached. In the horizontal version according to Fig. 3 and 4 is a special one, covered with metal gauze, at the carburetor inlet Shell 20 arranged. The mode of operation of the two versions shown is as follows: At When the machine is idle, the fuel liquid fills the shaft 5, the feed pipe 14 and partly the chamber 15 of the small \ * enturi tube 16. When running slowly, becomes the fuel liquid through the one provided with a fine passage at the lower end Pipe 7 sucked in. This fuel liquid mixes with the air supplied through the regulating screw 21 and flows through it channels 9 to the throttle valve. With accelerated movement occurs under the powerful Suction effect of the double venturi tubes id and 17 the air through the opening 23, flows through the interior of the tube 6 and the small ones present in the wall of this tube Holes to be in the annular space between the pipe 6 and the wall of the shaft 5 to the pipe 14 and after the Venturi tubes 16 and 17 to flow. During this passage, the air takes the fuel from the Shaft 5, as well as the one under the effect of the negative pressure through the openings 10 and 11 distributed fuel liquid with. In the case of a gasifier with two openings like the patent 189565 or a similar one Execution carries the pipe 6 under the channel 14 a collar 22, which the purpose has a reduced passage in the annulus between the tube 6 and the walls of the shaft 5 to create. Since the passage cross-section at the collar 22 is small in In relation to the cross section of the opening 23, the opening 10 is solely due to the negative pressure of the \ enturirohres, and the opening 11 delivers fuel only under the Difference in height between the liquid levels in the float tank and in the shaft 5. With normal machine load there is no fuel in the shaft 5, since the fuel supplied through the equalization opening 11 Fuel is sucked out of the annular space between the pipe 6 and the walls of the shaft 5 during the transition from idle to full load has been. The invention can also be -l: egg all Yer- _{7 <>} apply carburettors, in which two subject below the fuel level or below it hefindliche fuel nozzle to the vacuum, and also one egg carburetors that have only a single fuel nozzle. The arrangement described allows a simple and quick compilation and Acceptance. Ρλ τ ε χ τ - A ν s ρ r γ che: i. Injection carburetors for explosive engines with several mixture formation stages, in which several coaxially arranged Yenturi tubes are used to increase the voltage drop at the fuel outlet opening and a g ₀ channel which feeds the fuel-air mixture in the first stage opens into the smallest venturi tube, characterized in that around the smallest Venturi tube (16) a chamber (15) is arranged, which ü ': he the supply channel (14) for the mixture of the first stage is kept permanently filled with fuel up to a small distance from the spray openings and in this way forms a kind of storage container. 2. Carburetor according to claim 1, characterized in that just above the narrowest cross-section of the small Venturi tube this one in its clear width sharply pronounced enlargement has uni there even the injection openings or the spray slot (19 j are attached. 3. Carburetor according to claim 1 and 2, characterized in that the upper diverging part of the small Yenturi tube (16) is divided so that by the separated part (17) a third Venturi tube is created, through which the effectiveness the overall arrangement is increased. For this purpose ι sheet of drawings.