Fuel is admitted through pipe 1 to chamber 2 containing float 3, which operates needle valve 4. From the float chamber, fuel is delivered through fuel jet 5 into well 6 and atomizer 7. The cover of the well has hole 8. When the engine is not operating, the fuel in the well and atomizer is at the same level as in the float chamber. When the engine begins to operate, pure fuel begins to flow out through jet 9, arranged in the narrowest part of venturi 10. The pressure of the incoming air is lowered at the throat of the venturi. The fuel is mixed with air flowing through pipe 11 and forms the fuel-air mixture. When all the fuel in the well is used up, air begins to enter through jet 8 so that an emulsion enters the atomizer instead of pure fuel. Throttle valve 12 regulates the rate of flow of the fuel-air mixture.
$4236$CHP,Rg$