Abstract: A combustion engine fuel system apparatus saturates and diffuses a gas, such a air, into a liquid fuel. The apparatus includes a fuel saturation chamber connected to the engine fuel tank for receiving a liquid fuel therefrom and also connected to a gas compressor for directing compressed gas into the fuel saturation chamber for saturating a liquid fuel being fed therein with the gas. The fuel saturation chamber is connected to a gas diffusion chamber for diffusing gas into the liquid fuel and which is also connected to the gas compressor. A dense porous material, such as a porous stone, is positioned in the gas diffusion chamber for diffusing the gas and liquid fuel together. The saturation and diffused liquid fuel is then fed into a combustion engine. A liquid fuel heater is used to heat the fuel being fed into the fuel saturation chamber.

Abstract: An apparatus and a method of saturating liquid fuel with air, oxygen, or another gas for injecting into an internal combustion engine. The internal combustion engine is provided with a gas compressor or pump for compressing air or oxygen, which is directed into a fuel saturator having a dense, porous material or stone therein and having a liquid hydrocarbon fuel being fed therethrough. Compressed gas is fed onto one side of the stone and is forced therethrough for saturation into the liquid fuel, which is then fed into a fuel injection system of an internal combustion engine. Gas that separates from the liquid fuel is trapped and vapor is removed therefrom. The fuel saturator uses a gas saturation stone, which may be hollow in one end for feeding a compressed gas thereinto, while the other side is surrounded with the liquid hydrocarbon fuel. The liquid hydrocarbon fuel may be fed around a spiralling passageway adjacent the stone for a more complete saturation of the fuel.