BE501691A

BE501691A -

Info

Publication number: BE501691A
Authority: BE
Priority date: 1950-03-13
Also published as: FR1014426A

Description

       

  PERFECTIONNEMENTS AUX CARBURATEURS. 

  
La présente invention a pour objet un perfectionnement aux carburateurs, perfectionnement applicable plus particulièrement, mais non exclusivement, aux carburateurs pour l'alimentation des moteurs à explosion de petite cylindrée tels que les moteurs de motocyclettes, de vélomoteurs, de motorettes et les moteurs auxiliaires pour cycles. Ce perfectionnement, qui rend instantané le dé-. part du moteur quelles que soient les conditions de température, d'humidité et de composition du carburant, est essentiellement caractérisé par l'application

  
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 <EMI ID=2.1> 

  
en marche normale par un piston sur lequel l'usager peut agir par un dispositif de commande approprié quelconque 

  
Pour mieux faire comprendre l'objet de l'invention, on va en décri-

  
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tatif de sa portée, un mode de réalisation pris comme exemple et représenté en coupe sur la figure unique du dessin schématique annexé.

  
Le carburateur comprend, à la manière habituelle, la cuve à niveau constant 1 dans laquelle se déplace le flotteur (non figuré), le gicleur 2
(qui, dans le carburateur perfectionné conformément à l'invention, devient le gicleur principal) et le volet de gaz 3 qui., dans ses déplacements, démasque

  
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re avec le gicleur 2 livre passage à l'air servant à produire l'émulsion.

  
Conformément à l'invention, un deuxième gicleur 6 est monté à côté du gicleur principal 2 et communique par le conduit 7 avec le canal 8 qui débouche à sa partie inférieure dans le conduit 9 d'alimentation du gicleur principal et qui est ouvert à l'air à sa partie supérieure,, 

  
Sur le parcours du conduit 7 est placé un piston 10 qui peut se déplacer dans un logement du corps du carburateur et dont la partie inférieure a un diamètre réduit de manière qu'un passage se trouve ménagé entre le canal



  CARBURETTOR DEVELOPMENTS.

  
The object of the present invention is an improvement in carburettors, an improvement applicable more particularly, but not exclusively, to carburettors for supplying small-displacement internal combustion engines such as the engines of motorcycles, mopeds, motorettes and auxiliary engines for cycles. This improvement, which makes the de-. part of the engine regardless of temperature, humidity and fuel composition, is essentially characterized by the application

  
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in normal operation by a piston on which the user can act by any suitable control device

  
To better understand the subject of the invention, we will describe

  
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tative of its scope, an embodiment taken as an example and shown in section in the single figure of the accompanying schematic drawing.

  
The carburetor comprises, in the usual way, the constant level tank 1 in which the float (not shown) moves, the nozzle 2
(which, in the improved carburetor according to the invention, becomes the main jet) and the gas flap 3 which, in its movements, unmasks

  
 <EMI ID = 4.1>

  
re with the nozzle 2 delivers passage to the air used to produce the emulsion.

  
According to the invention, a second nozzle 6 is mounted next to the main nozzle 2 and communicates through the duct 7 with the channel 8 which opens out at its lower part into the duct 9 for supplying the main nozzle and which is open to the left. 'air at its upper part,

  
On the path of the duct 7 is placed a piston 10 which can move in a housing of the body of the carburetor and the lower part of which has a reduced diameter so that a passage is made between the channel

Claims

8 and nozzle 6 when the piston is in the operating position of

the latter, position shown in solid lines in the drawing. A spring

11 housed in the piston 10 tends to keep it in the position of non-use shown in phantom in the drawing. Finally, a control of any suitable type which, in the example shown, consists of a cable 12 ending in a lever, allows the user to act on the piston to bring it to the position "in solid lines on. the drawing) of use of the auxiliary nozzle.

The operation of this device is as follows

When the engine is started, the user acts on the control 12 to bring the piston 10 into the position shown in solid lines and for which communication is established between the tank and the auxiliary nozzle 6 which is thus supplied. as soon as the engine sucks. Thanks to the fact that the channel 8 opens into the atmosphere at its upper end, the slight depression which would occur in said channel in the event of excessive play of the piston

is compensated and there can be no leaks.

The air necessary for the combustion of the gasoline delivered by the auxiliary nozzle arrives through the gas passage 4 if the shutter 3 is open or partially open or through the hole 13 provided above the shutter if the latter.

is closed. In normal carburettor operation, hole 13 is automatically hidden by lifting the flap.

The improved carburetor provides the following essential advantages: <EMI ID = 5.1>

Zion whatever the conditions of temperature, humidity and composition of the fuel;

20 - by making unnecessary the usual maneuver consisting in "calling the gasoline", it eliminates the wastage of gasoline by flooding of the tank which is the consequence and it always remains clean;

3. - if the main jet is obstructed, it allows the engine to operate without removing anything.

It is understood that the invention is not limited to the details of embodiment described and shown by way of example and that it is possible to modify them in various ways or to replace certain elements with equivalent elements without its economy being affected. found, for this, altered.

RESUMA.

The object of the invention is;

sion essentially characterized by the application, to a carburettor of current construction, of a small auxiliary nozzle supplied by a channel which connects it to the carburetor bowl, said channel being closed in normal operation

by a piston on which the user can act by any suitable control device;

carrying the improvement specified under