Venturi insert for a carburetor, and carburetor, system and apparatus incorporating the same

A carburetor for an internal combustion engine comprising:

• a carburetor body comprising a plurality of throttle bores extending through the carburetor body, and for each of the throttle bores a fuel delivery passage terminating at a sidewall of the throttle bore;
• an insert comprising a plurality of venturi tubes and a linking member connecting the venturi tubes together, each of the venturi tubes comprising a venturi passage and a fuel port for introducing fuel into the venturi passage;
• and
• the insert secured to the carburetor body so that the venturi tubes extend into the throttle bores and the fuel ports are in fluid communication with the fuel delivery passages, and the linking is member is in contact with the carburetor body.

A system for mixing air and a gaseous fuel for an internal combustion engine comprising:

• a carburetor comprising:
• a carburetor body comprising a plurality of throttle bores extending through the carburetor body, and for each of the throttle bores a fuel delivery passage terminating at a sidewall of the throttle bore;
• an insert comprising a plurality of venturi tubes and a linking member connecting the venturi tubes together, each of the venturi tubes comprising a venturi passage and a fuel port for introducing fuel into the venturi passage;
• and
• the insert secured to the carburetor body so that the venturi tubes extend into the throttle bores and the fuel ports are in fluid, communication with the fuel delivery passages, and the linking member is in contact with the carburetor body;
• and
• a source of gaseous fuel fluidly coupled to the fuel delivery passages of the carburetor.

An insert for a carburetor body comprising:

• a first venturi tube comprising an outer surface and an inner surface forming a first venturi passage, the first venturi tube comprising a first fuel port extending from the outer surface of the first venturi tube to the inner surface of the first venturi tube;
• a second venturi tube comprising an outer surface and an inner surface forming a second venturi passage, the second venturi tube comprising a second fuel port extending from the outer surface of the second venturi tube to the inner surface of the second venturi tube;
• and
• a linking member having a first end connected to the first venturi tube and a second end connected to the second venturi tube, the linking member being flexible and resilient.