Abstract: A method and apparatus for the preparation and control of an air-fuel mixture in which compressed air is divided into two streams, one of which is at a pressure taking into account engine load and existing atmospheric conditions and serves for supplying and sucking fuel and its preliminary atomization, the second stream serving for successive atomizations of fuel and correction of discharge while preventing secondary coagulation. The mixture is fed to the engine intake manifold, where it is further mixed with air sucked by the engine.

Abstract: A method and apparatus for the preparation and control of an air-fuel mixture to the air intake of an engine in which the fuel is continuously delivered to a multi-stage atomizer by a gas at a pressure higher than the ambient pressure, the pressure of the gas being controlled in accordance with the engine speed and load. The fuel is continuously atomized and homogenized, preferably several times, in the atomizer. The atomizer is installed in the engine air intake ahead of the throttle and the fuel is atomized by the gas delivered through a passage, and the mixture thus prepared is introduced into the air intake above the throttle where it is mixed with the air induced by the engine to charge the engine cylinders.

Abstract: An idling device for a carburettor having an emulsion channel with a feed nozzle, most advantageously, a de Laval nozzle, constituting the smallest section size of the emulsion channel and a concentric port surrounding the nozzle which feeds additional air from over the throttle of the carburettor by a connection channel. The emulsion channel possesses a measurement section controlled by a needle which feeds additional air from the connection channel and at times an inlet of air from the connection channel for blocking fuel outflow. The air inlet is opened by a valve when the negative pressure under the throttle is higher than the negative pressure during idling of the engine.