Patent ID: 7007930

Claim:
A carburetor for a combustion engine comprising: a body; a fuel-and-air mixing passage through the body, the fuel-and-air mixing passage having an upstream region, a downstream region and a venturi region disposed between the upstream and downstream regions; a choke valve operatively in the upstream region of the mixing passage; a fuel chamber at least in-part carried by the body; and a dual fuel feed system having: a primary fuel feed passage at least in-part carried by the body and communicating between the venturi region and the fuel chamber for flowing fuel into the venturi region for mixing with air flowing past the choke valve and through the venturi region when the engine is operating at above idle speed conditions, and a separate supplemental fuel channel at least in-part carried by the body and communicating between the upstream region and the fuel chamber supplying fuel into the upstream region for mixing with air flowing through the fuel-and-air mixing passage when the engine is operating only at high power conditions.