Fuel and air mixing apparatus

Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer

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Details

123 1A, 48180C, 261 16, F02M 2102

Patent

active

044973047

ABSTRACT:
The invention comprises a system for introducing gaseous or vaporized fuels into a carburetor from a storage tank including a regulator connected between the tank and the carburetor for providing a supply of hydrocarbon fuel in a gaseous state at a regulated vapor pressure to a mixing chamber having air and fuel intake ports to blend said hydrocarbon fuel with intake air for injection into the carburetor. In a typical installation, the pressure change of the vacuum manifold alters the pressure within the mixing chamber to draw in fuel and air in proportion to a near constant equivalence ratio, due to the respective areas of the intake ports, over the entire operating range of the engine.

REFERENCES:
patent: 3650254 (1972-03-01), McJones

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