Fuel system for a multi-fuel internal combustion engine

A multi-fuel generator and fuel delivery system comprising:

• a multi-fuel internal combustion engine configured to operate on a liquid fuel supplied from a liquid fuel source through a liquid fuel line and a gaseous fuel supplied from a pressurized fuel source through a gaseous fuel line;
• an alternator driven by the multi-fuel internal combustion engine;
• and
• a fuel regulator system comprising:
• a primary pressure regulator coupled to a service valve of the pressurized fuel source to regulate fuel supplied from the pressurized fuel source to a reduced pressure, and
• a secondary pressure regulator coupled to the primary pressure regulator to regulate fuel supplied from the primary pressure regulator to a desired pressure for delivery through the gaseous fuel line to operate the engine.

A carburetor for use in a multi-fuel internal combustion engine, the carburetor comprising:

• a throat in which fuel and air are mixed in throat to provide an air-fuel mixture for the multi-fuel internal combustion engine;
• a valve located in the throat to provide a choke and throttle for the multi-fuel internal combustion engine;
• a float bowl to hold liquid fuel;
• a main fuel circuit positioned downstream from the float bowl and extending from the float bowl to the throat;
• an idle fuel circuit that provides a flow path to the throat downstream of the throttle to run the engine at idle;
• and
• a carburetor cutoff solenoid configured to selectively control fuel flow through the main fuel circuit and the idle fuel circuit.