DE294290C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- Ju 294290 CLASS 46e. GROUP

THEOPHIL SCHENKEL in LAUSANNE, Switzerland. Carburettor with spray nozzle for internal combustion engines.

Patented in the German Empire on April 10, 1914.

The invention relates to a carburetor with a spray nozzle for internal combustion engines, like him for example, can be used for motor vehicles or other explosion engines.

With him, as with other known carburetors, an approximate constant composition of the gas-air mixture a simultaneously displaceable on a guide and rotatable throttle device used. But it differs from the known carburetors in that it is light and precise adaptation of the carburetor to engines of different types and power Inclination of the guide can be changed at will without the replacement any of its parts is required.

The throttle organ can move both of its movements by means of one connected to it Received pin, which is on an adjustable incline, on the outside of the mixing vessel and on a guide arm articulated thereon, which can be locked by nuts, is displaced can be.

The drawing represents an embodiment of the subject matter of the invention.
Fig. Ι is an elevation of the carburetor.
FIG. 2 is a vertical section according to FIG. 1.

Fig. 3 shows in elevation the cock plug separately in the same position, which the same 3 <> in Fig. ι assumes.

Figure 4 is a vertical section through the spray nozzle.

FIGS. 5 and 6 are sections along lines AB and CD in FIG.

Figure 7 is a side view of a somewhat modified embodiment of the carburetor.

α is the cylindrical housing of the carburetor with a pipe socket α ¹ for the entry of preheated air, a socket a ² for the exit of the gas-air mixture and with another cut-out opening « ³ for the entry of cold air, δ denotes a screwed into the bottom of the housing α Spray nozzle and contains a central feed ^{channel δ 1} for the fuel, which is connected to the annular channel δ ^{2 through openings δ 3} . A channel a ^B leading from the float vessel α ^{4 of} the fuel opens into this channel. In the cylindrical housing α , a hollow cock plug c is fitted as a throttle element with the cutouts c ¹ , c ² at its lower edge to control the inlet openings a ¹ and a ^z for the preheated and cold air. At the upper end, a passage c ^{3 is} provided on the chick to control the

Exit of the gas-air mixture through the nozzle a ^z . In addition, a pin d ^{protruding through the cutout a 3} sits on the outside of the plug c, whereby the plug can be rotated to regulate the inlet and outlet openings of the air and the gas-air mixture in order to be able to adapt the engine to different loads. This pin d slides during the rotation of the

ίο chick c on the inclined upper edge of an arm e and thereby causes axial displacements of the chick. Inside the plug a conical bead c ⁴ runs around the spray nozzle δ and closes the passage between the bead and the protruding head δ ^{4 of} the spray nozzle as long as the plug is in its lowest position, and opens this passage more and more, when the chick moves upwards.

Arm e is rotatably mounted on the one hand around pin e ^{1 on the} outside of the cylindrical mixing vessel and on the other hand is hinged to a bolt f ^{inserted through a tab a e} cast on the mixing vessel, which is fixed in position by nuts f ¹ , p and washer rings f ^3. On the chick, a needle g is finally screwed into a cylindrical sprue of its cover, which is fixed by the lock nut g ¹ .

The lower end of the slightly conical needle penetrates through a plate-shaped head δ ⁵ , which is screwed ^{into the spray nozzle and closes the cavity δ 6 of} the enlarged head δ ^{4 of} the spray nozzle, through to the inside of the spray nozzle and more or less closes the through hole δ ^{7 of} this head and thus also the passage of the fuel from channel b ₁ through channel δ ⁷ and its connecting openings δ ⁸ to the cavity δ ⁶ more or less. From the cavity δ ⁶ the fuel then passes through narrow slits δ ⁹ , which are formed by incisions made on the superimposed edges of the heads δ ⁴ and δ ⁵ , into the air stream sucked in by the piston of the machine, which sweeps past the head of the spray nozzle. The amount of fuel flowing through depends on the respective position of the plug in the axial direction and will therefore be larger if the passage cross-section between bead c * and head δ ^{4 has also} increased.

A small flattening g ² on the needle g will allow a little fuel to flow ^{through channel δ 7} even in the lowest position of the plug.

By turning the plug by means of pin d , the passage cross-sections for the cold and warm air inlet and for the outlet of the gas-air mixture are changed at the same time, as well as the passage cross-sections around the spray nozzle head and the feed channel. In this way, however, the power of the engine can also be changed as required without reducing the uniformity of the gas-air mixture under the various loads. The small flat area g ² on the needle g is sufficient to allow the fuel necessary for idling to pass. The cavity δ ^{6 of} the spray nozzle then fills with fuel so that, when the chick has been quickly brought into its position for full load, the fuel accumulated in the cavity provides the engine with the additional fuel required for full load for a short time.

By changing the inclination of the arm e by means of the bolt f , the passage cross-sections for the air around the spray nozzle as well as for the fuel supply are changed arbitrarily and in a mutually corresponding manner for each position located between its extreme positions, idling and full load , and you can therefore adjust the carburettor for engines of different power by simply adjusting its nuts f ¹ and f ^2. A pointer / ~ ⁴ attached to bolt f shows on a graduation buried on the outside of the housing for which power the carburettor has been set.

In addition, the setting chosen first, if it is not absolutely correct, can easily be improved by slightly changing the inclination of the arm e.

Both settings, the coarser and the finer, take place without the replacement any part of the carburetor is necessary.

According to FIG. 7, the surface of the arm β, loo along which the pin d slides, consists of two flat surfaces which, however, do not have the same inclination and thus form an obtuse angle with one another. The washer rings f ³ are not present in this embodiment, and the pointer is located above the tab α ⁶ .

The guide on which the pin d slides can have a different shape than that shown.

Claims (2)

Patent Claims: i. Carburetor with spray nozzle for internal combustion engines, in which to achieve an approximately constant ratio of the gas-air mixture is a simultaneously displaceable on a guide and rotatable throttle member is used, characterized in that for easy and precise adjustment of the carburetor Motors of various types and performance adjust the inclination of the guide at will can be changed. 2. Carburetor according to claim i, characterized in that the throttle member receives its two movements by means of an associated pin (d) which can be locked on an adjustable inclined, rotatable on the outside of the housing and on one thereon by nuts (f ¹ , f ² ) BoI-zen (f) articulated guide arm (e) can be moved. For this purpose 2 sheets of drawings. Berlin, printed in the keichsdruckerei.