NOVELTY - A system has an electrolytic reactor (11) with a sealed cathode chamber partially filled with salt water. An anode is partially immersed in the solution and electrically isolated from the chamber. A reservoir (12) is in electrolyte communication with the reactor. A level controller maintains reactor solution level. A cooling system is to cool the reactor. A conduit (15) directs hydrogen and oxygen product from the reactor to the combustion chamber. A power from the electrical system of the engine energizes the reactor.    USE - For an internal combustion engine used in e.g. power gantry crane, mining drill, diesel generator, and other large horse power industrial machine. It can also be used for stationary apparatus or on a vehicle.    ADVANTAGE - The generator reduces harmful emissions from the exhaust of internal combustion engines. Experimental tests on engine shows a significant reduction in pollutants such as carbon monoxide, unburned hydrocarbon, and nitrous oxide. The engine internals are cleaned by removing or reducing carbon build-up. It minimizes the risk of explosion by limiting hydrogen and oxygen production according to engine demand and by preventing these gases from accumulating under pressure. The service life is extended by shifting reactor duty cycles. The design is simple. Thus, hydrogen generator is practical, safe, and requires little maintenance. The hydrogen and the oxygen improve the speed of combustion and/or combustion efficiency in the engine. The emissions of carbon monoxide, unburned hydrocarbons, nitrogen oxides, and sulfur oxides are reduced. The mileage of the vehicle is increased while minimizing the risk of accidental explosion because the gaseous reaction products are not allowed to accumulate under pressure.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for    (1) method of generating variable output of hydrogen and oxygen;    (2) electrolyte solution    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic showing a single reactor and associated components.    Electrolytic reactor (11)    reservoir (12)    Pump (13)    Heat exchanger (14)    Conduit (15)