Gaseous fuel mixing device

A gaseous fuel mixing device configured for use with an internal combustion engine, the mixing device comprising:

• a body including
• a first air/fuel passageway;
• a second air/fuel passageway;
• a first gaseous fuel passageway in fluid communication with the first air/fuel passageway;
• a second gaseous fuel passageway in fluid communication with the second air/fuel passageway;
• a first throttle valve pivotably coupled to the body and positioned in the first air/fuel passageway;
• a second throttle valve pivotably coupled to the body and positioned in the second air/fuel passageway;
• and
• an intake unit coupled to the body and in fluid communication with a source of gaseous fuel, wherein each of the first and second gaseous fuel passageways is configured to draw an amount of gaseous fuel, based upon individual demand of fuel through the respective first and second air/fuel passageways, from the intake unit.

A gaseous fuel mixing device configured for use with an internal combustion engine, the mixing device comprising:

• a modified carburetor body, originally configured for use with a liquid fuel, including
• an air/fuel passageway;
• a gaseous fuel passageway having an inlet in communication with an exterior of the body and an outlet in communication with the air/fuel passageway;
• a closed liquid fuel passageway;
• a throttle valve pivotably coupled to the carburetor body and positioned in the air/fuel passageway;
• and
• an intake unit coupled to the carburetor body, the intake unit configured to deliver gaseous fuel to the gaseous fuel passageway in the carburetor body.

A method of converting a carburetor from operating using a liquid fuel to operating using a gaseous fuel, the method comprising:

• providing a carburetor body including an air/fuel passageway;
• creating a gaseous fuel passageway through a portion of the body to fluidly communicate the gaseous fuel passageway with the air/fuel passageway;
• and
• closing a liquid fuel passageway in the body.