Carburetor providing a uniformly atomized fuel-air mixture

In a carburetor for intermixing atomized fuel and air, of the type having an air passageway passing air flow and atomized fuel to an engine, a throttle located in the air passageway for controlling the air flow therethrough, and pressurized fuel supplied from an external source, the improvement comprising:

• a. injection means located substantially medially in the air passageway and configured for developing an annular spray pattern outwardly across the air passageway,
• b. a bypass chamber located adjacent to the air passageway, open thereto, and configured for capturing any unimpeded fuel injected by the injection means and for returning it to the fuel source, and
• c. a cylindrical metering vane mounted intermediate the injection means and the wall of the air passageway and configured for allowing passage of the fuel from the injection means to the bypass chamber when there is no air flow in the air passageway, and for intercepting a portion of the fuel when the fuel spray pattern is deflected due to flow in the air passageway and directing the deflected portion into the air passageway for intermixing with the air, the end portion of the metering vane facing away from the engine being scalloped,
• d. the metering vane being configured for intercepting an amount of fuel proportional to the air flow in the air passageway for maintaining a predetermined air-fuel ratio to the engine.