NOVELTY - A combustion system comprises a fuel mixture of oxygen and hydrogen, where combustion temperature is at least partially controlled with the addition of water to combustion.    USE - Used for producing steam, which turns a steam turbine(s) turning a generator to create electrical energy, where at least a portion of electrical energy is used in the electrolysis of water to hydrogen and oxygen. It is useful for creating mechanical rotating energy, which turns a generator to create electrical energy. It is useful to power at least a portion of a cryogenic air separation system, an air membrane separation system, and an air pressure swing adsorption separation system. It is used as internal combustion, heating combustion, and turbine combustion. It powers compressor(s) for cooling and/or liquefaction. (all claimed)    ADVANTAGE - The system is environmentally friendly, effective, efficient, and economically feasible. It does not produce oxides of carbon and minimizes the production of oxides of nitrogen.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a combustion apparatus for performing combustion of oxygen and hydrogen, comprising:    (a) a fuel apparatus comprising a source of oxygen and hydrogen flow to the engine, comprising oxygen and hydrogen flow control valves, and oxygen and hydrogen flow sensing devices sensing oxygen and hydrogen flow sending an oxygen and a hydrogen flow signal proportional to oxygen and hydrogen flows to a controller, respectively; a source of air flow to the engine, comprising an air flow control device and an air flow sensing device sensing air flow sending an air flow signal proportional to air flow to a controller; and a temperature measurement device measuring combustion temperature and/or combustion engine temperature near the engine combustion chamber sending a temperature signal in proportion to the combustion temperature or the combustion engine temperature to a controller;    (b) a coolant apparatus comprising a source of coolant flow to the engine, comprising a coolant source and a coolant flow control valve; and a source of combustion water flow to the combustion chamber of engine, comprising a water source, a combustion water flow control valve, and a water flow sensing device sensing water flow sending a combustion water flow signal proportional to water flow to a controller; and    (c) a control apparatus comprising a controller(s) receiving the proportional flow signal for oxygen, hydrogen, air, and combustion water; receiving the proportional temperature signal; receiving an external combustion signal set point; having a set point for the ratio of hydrogen to oxygen; having a set point for the ratio of hydrogen to combustion water; having a warm combustion temperature set point; having a coolant combustion temperature set point; and having a hot combustion temperature set point, the control apparatus comparing the combustion signal set point to the hydrogen flow signal, sending a signal to the hydrogen flow control valve in proportion to the difference in the hydrogen flow signal to the combustion signal set point, proportioning the hydrogen flow control valve, the control apparatus comparing the hydrogen flow signal and oxygen flow signal to the hydrogen to oxygen ratio set point, sending a signal to the oxygen flow control valve, proportioning the oxygen flow control valve, in case where oxygen flow control valve signal is not near 100% sending a signal to the air flow control device closing air flow control valve, in case where oxygen flow control valve signal is near 100% comparing oxygen flow signal and air flow signal to hydrogen to oxygen ratio set point obtaining an air flow difference, sending a proportional signal to the air flow control device that is in proportion to the difference, proportioning air flow control valve, the control apparatus comparing the temperature signal to the warm temperature set point, the coolant temperature set point and hot temperature set point, in case where temperature signal is less than the warm temperature set point, less than the coolant temperature set point and less than the hot temperature set point, sending a signal to the combustion water flow control valve to close the combustion water flow control valve, and sending a signal to the coolant flow control valve to close the coolant flow control valve, in case where temperature signal is equal to or greater than the warm temperature set point, less than the coolant temperature set point and less than the hot temperature set point, obtain a difference between the temperature signal and low temperature set point, sending a signal in proportion to the difference between the temperature signal and low temperature set point, which obtains a hydrogen to water ratio that is greater than the hydrogen to water ratio set point, to the combustion water flow valve, proportioning the combustion water flow control valve, and sending a signal to the coolant flow control valve, closing the coolant flow control valve, in case where the temperature signal is greater than the warm temperature set point equal to or greater than the coolant temperature set point and less than the hot temperature set point, obtain a difference between the temperature signal and high temperature set point, sending a signal to the combustion water flow control valve that obtains a hydrogen to water ratio that is equal to the hydrogen to water ratio set point, proportioning the combustion water control valve, and sending a signal in proportion to the difference between the temperature signal and coolant temperature set point to the coolant flow control valve, proportioning the coolant flow control valve, and in case where temperature signal is greater than the warm temperature set point, greater than the coolant temperature set point and equal to or greater than the hot temperature set point, sending a signal to the combustion water flow control valve, opening the combustion water flow control valve 100%, and sending a signal in proportion to the difference between the temperature signal and coolant temperature set point to the coolant flow control valve, proportioning the coolant flow control valve, and sending a signal to the hydrogen flow control valve, closing the hydrogen flow control valve, and sending a signal to oxygen flow control valve, and sending a signal to air flow control valve, closing the air flow control valve.    DESCRIPTION OF DRAWING(S) - The figure illustrates in block diagram from a general description of proposed methods, processes, systems, and apparatus to manage water, oxygen, hydrogen, and air in the discovered water combustion technology combustion engine.