Abstract: System and method for a superheated-water injection system (SWIS). The system is designed to superheat water to temperatures exceeding 212.degree. F. (100.degree. C.) under conditions of pressure to prevent it from boiling for the purpose of injecting a timed and metered volume of such superheated water directly into the firing chamber of an internal combustion engine (whether spark-ignited, diesel, turbine or jet) to produce usable steam incremental to the work-force developed by such engine through combustion.

Abstract: Method for developing gas pressure to drive an engine consisting of establishing equal cooperating gas portions in separate containers a close circuit; developing pressure change in one of the portions by changing temperature; establishing communication between containers, allowing pressure equalization in containers by gas flow from container given greater pressure to the other; cutting communication between containers after pressure equalization; redeveloping gas pressure change in one container, obtaining relative pressure increase in the container to which gas flowed by changing the temperature in one container; and driving an engine by establishing gas flow communication between the containers through the engine.