Abstract: A fuel system and electronic control therefor which is especially designed for use with an internal combustion engine or the like in which said fuel system is operable to provide fuel fumes or vapor to the engine from a source of liquid ignitable vaporizable fuel, such as gasoline, of sufficient quantity whereby to significantly increase the efficiency of the engine and thus substantially increase the per gallon mileage rate for the engine when used in an automotive vehicle or the like, and one using liquid fuel as the original fuel source. The system incorporates an electronic control operable to monitor a plurality of engine parameters and which control is responsive to a change in engine demand for said fuel and resultant change in one or more of said engine parameters to maintain the optimum ratio of vaporized fuel and air in the mixture delivered to the engine for combustion.

Abstract: A fuel system and electronic control therefor which is especially designed for use with an internal combustion engine or the like in which said fuel system is operable to provide fuel fumes or vapor to the engine from a source of liquid ignitable vaporizable fuel, such as gasoline, of sufficient quantity whereby to significantly increase the efficiency of the engine and thus substantially increase the per gallon mileage rate for the engine when used in an automotive vehicle or the like, and one using liquid fuel as the original fuel source. The system incorporates an electronic control operable to monitor the combustion of the vaporizable fuel and which control is responsive to a change in engine demand for said fuel to maintain the optimum ratio of vaporized fuel and air in the mixture delivered to the engine for combustion.