A method for supplying hydrogen-operated internal combustion engines with oxygen, wherein an inert gas is cycled. An economical local supply of pure oxygen for a closed-cycle hydrogen engine with argon cycling is realized by separating the oxygen from the atmosphere without relying on the useful work of the engine. OSM ceramics and exhaust gas heat and low oxygen partial pressure of the exhaust gas are used to generate oxygen. Two reactors filled with OSM ceramics are used, these reactors being alternately purged with exhaust gas and regenerated with air. Losses of inert gases and the entry of atmospheric nitrogen are avoided by intermediate purging with steam. The steam is generated by the heat of the exhaust gas or exhaust air. A mixture of water vapor, inert gas and oxygen is formed during purging. Subsequently, the oxygen content in the gas phase is markedly increased since water vapor is condensed out.

The present teachings provide for an air system for an internal combustion engine (“ICE”). The air system can include a compressor, separation device, first conduit, second conduit and a system for controlling a ratio of gasses that enter the combustion chamber during an intake stroke. The separation device can include a housing and membrane. The housing can be fluidly coupled to the compressor and configured to receive a first volume of intake air therefrom. The membrane can be disposed within the housing and configured to separate the first volume of intake air into a volume of nitrogen-rich air and a volume of oxygen-rich air. The first conduit can fluidly couple the compressor to the combustion chamber. The second conduit can fluidly couple the compressor to the separation device. The gasses can include the volume of nitrogen-rich air, the volume of oxygen-rich air, and a second volume of intake air.

The present disclosure discloses an intake oxygen concentration control system suitable for an engine with lean NO.sub.x trapping technology. The system adopts an exhaust turbocharging device to provide a pressure difference for an oxygen-enriched membrane to generate oxygen-rich and oxygen-deficient gases, and controls the intake oxygen concentration of different cylinders by adjusting the opening of flow control valves to match lean and rich combustion cycles of a lean NO.sub.x trapping system. In a lean combustion cycle, all four cylinders are filled with an oxygen-rich gas, which can make the combustion more complete and improve the thermal efficiency and fuel economy. In a rich combustion cycle, one of the four cylinders is filled with an oxygen-deficient gas, and the other three cylinders are filled with air or an oxygen-rich gas with a low concentration, so that less fuel is required to create a reducing atmosphere to realize the release and reduction of NO.sub.x in a lean NO.sub.x trapping device, thereby reducing the fuel consumption and ensuring the output power of the other three cylinders.

The present disclosure discloses an intake oxygen concentration control system suitable for an engine with lean NO.sub.x trapping technology. The system adopts an exhaust turbocharging device to provide a pressure difference for an oxygen-enriched membrane to generate oxygen-rich and oxygen-deficient gases, and controls the intake oxygen concentration of different cylinders by adjusting the opening of flow control valves to match lean and rich combustion cycles of a lean NO.sub.x trapping system. In a lean combustion cycle, all four cylinders are filled with an oxygen-rich gas, which can make the combustion more complete and improve the thermal efficiency and fuel economy. In a rich combustion cycle, one of the four cylinders is filled with an oxygen-deficient gas, and the other three cylinders are filled with air or an oxygen-rich gas with a low concentration, so that less fuel is required to create a reducing atmosphere to realize the release and reduction of NO.sub.x in a lean NO.sub.x trapping device, thereby reducing the fuel consumption and ensuring the output power of the other three cylinders.

The invention relates to a combustion engine and to a process for producing energy by means of expansion work in combustion engines. The invention is based on the problem of providing a possibility for supplying oxygen to the combustion space of a self-compacting combustion engine in an energy-efficient manner. According to the invention, with an arrangement for carrying out an intensified combustion for automatically increasing pressure of the combustion gases and using them in a combustion engine for performing mechanical work, the above-stated problem is solved in that an oxygen storage material is present in the combustion space so that a self-compressing combustion process is made possible by storing the oxygen in the oxygen storage material in the combustion space.

The invention relates to a combustion engine and to a process for producing energy by means of expansion work in combustion engines. The invention is based on the problem of providing a possibility for supplying oxygen to the combustion space of a self-compacting combustion engine in an energy-efficient manner. According to the invention, with an arrangement for carrying out an intensified combustion for automatically increasing pressure of the combustion gases and using them in a combustion engine for performing mechanical work, the above-stated problem is solved in that an oxygen storage material is present in the combustion space so that a self-compressing combustion process is made possible by storing the oxygen in the oxygen storage material in the combustion space.

A method for operating an internal combustion engine using a gas mixture that is supplied to the fossil fuel in the engine combustion chamber in addition to the combustion air and is produced by the electrolysis of water includes measuring a quantity of air drawn into the intake tract of the engine in accordance with a particular engine operating mode. The method further includes directly supplying, to the combustion air per unit of volume of combustion air, a same, limited quantity of Brown's gas that acts as an additive, that is produced by means of an electrolyzer operated using a pulsating current, and that contains energy-enriched, gaseous water molecules. The percentage of the gas molecules present in the fuel during the combustion process is limited.

A method for operating an internal combustion engine using a gas mixture that is supplied to the fossil fuel in the engine combustion chamber in addition to the combustion air and is produced by the electrolysis of water includes measuring a quantity of air drawn into the intake tract of the engine in accordance with a particular engine operating mode. The method further includes directly supplying, to the combustion air per unit of volume of combustion air, a same, limited quantity of Brown's gas that acts as an additive, that is produced by means of an electrolyzer operated using a pulsating current, and that contains energy-enriched, gaseous water molecules. The percentage of the gas molecules present in the fuel during the combustion process is limited.

A fuel-saving device includes an oxygen generator adapted for producing oxygen, an air intake component adapted for inhaling air, and a conveyor comprising an output terminal adapted for outputting gas, an oxygen terminal connected with the oxygen generator, an air terminal connected with the air intake component, and a connector connecting the output terminal, the oxygen terminal and the air terminal, so as to allow oxygen from the oxygen generator and air from the air intake component to be mixed and output through the output terminal.

A fuel-saving device includes an oxygen generator adapted for producing oxygen, an air intake component adapted for inhaling air, and a conveyor comprising an output terminal adapted for outputting gas, an oxygen terminal connected with the oxygen generator, an air terminal connected with the air intake component, and a connector connecting the output terminal, the oxygen terminal and the air terminal, so as to allow oxygen from the oxygen generator and air from the air intake component to be mixed and output through the output terminal.