A spud end fuel metering tube in an air-fuel mixing passage in a propane carburetor for enhancing performance of the system. The fuel supplying spud end is located in a venturi throat within the mixing chamber of the carburetor. The spud end includes linearly aligned fuel supply apertures that...http://www.google.fr/patents/US5827335?utm_source=gb-gplus-shareBrevet US5827335 - Enhanced performance carburetor system
