A method and apparatus is provided for the vaporization of liquid
hydrocarbon fuel in a closed system prior to its entry into an internal
combustion engine's combustion chambers in amounts proportional to the
acceleration level of the engine. The apparatus is a fuel vaporizer
interposed between an engine's fuel injection system and combustion
chambers and forms a canister housing. Liquid fuel enters via an inlet in
the housing, is vaporized by heating it to boiling and is drawn out of the
canister via an outlet under a partial vacuum to the combustion chambers
of the engine. The system is closed except for a vacuum connection with
the engine's combustion chambers. Heating means are provided to heat the
fuel to boiling without heating it to its flash point, thus avoiding its
pre-ignition.
