A gas supply device is equipped with an oxygen enrichment membrane module, a pump portion, and an electronic control unit. The electronic control unit performs oxygen enrichment control for merging the air supplied to a first space from a second space through the oxygen enrichment membrane and containing a higher concentration of oxygen than an atmosphere with the atmosphere that has flowed into the first space and supplying the merged air and atmosphere to a combustion chamber of the cylinders by driving the pump portion, and nitrogen enrichment control for discharging air containing a higher concentration of oxygen than the atmosphere to the second space from the first space through the oxygen enrichment membrane, producing air containing a higher concentration of nitrogen than the atmosphere in the first space, and supplying the air containing the higher concentration of nitrogen to the combustion chamber by driving the pump portion.

A gas supply device is equipped with an oxygen enrichment membrane module, a pump portion, and an electronic control unit. The electronic control unit performs oxygen enrichment control for merging the air supplied to a first space from a second space through the oxygen enrichment membrane and containing a higher concentration of oxygen than an atmosphere with the atmosphere that has flowed into the first space and supplying the merged air and atmosphere to a combustion chamber of the cylinders by driving the pump portion, and nitrogen enrichment control for discharging air containing a higher concentration of oxygen than the atmosphere to the second space from the first space through the oxygen enrichment membrane, producing air containing a higher concentration of nitrogen than the atmosphere in the first space, and supplying the air containing the higher concentration of nitrogen to the combustion chamber by driving the pump portion.

An engine additive fluid port includes a series of material layers arranged as a first oblong hollow member configured to seamlessly surround at least a portion of an intake port of an integrated cylinder head. The member penetrates into a cavity of the intake port via a plurality of nozzles featuring apertures capable of spraying a first fluid into the cavity.

An engine additive fluid port includes a series of material layers arranged as a first oblong hollow member configured to seamlessly surround at least a portion of an intake port of an integrated cylinder head. The member penetrates into a cavity of the intake port via a plurality of nozzles featuring apertures capable of spraying a first fluid into the cavity.

An engine additive fluid port includes a series of material layers arranged as a first oblong hollow member configured to seamlessly surround at least a portion of an intake port of an integrated cylinder head. The member penetrates into a cavity of the intake port via a plurality of nozzles featuring apertures capable of spraying a first fluid into the cavity.

An engine additive fluid port includes a series of material layers arranged as a first oblong hollow member configured to seamlessly surround at least a portion of an intake port of an integrated cylinder head. The member penetrates into a cavity of the intake port via a plurality of nozzles featuring apertures capable of spraying a first fluid into the cavity.

Proposed is a pretreatment desulfurization system including a desulfurization agent storage tank for storing a liquid-phase pretreatment desulfurization agent and a metering pump for supplying the liquid-phase pretreatment desulfurization agent from the desulfurization agent storage tank to a fuel supply line through which marine fuel oil is supplied to a marine engine in a predetermined ratio. Since a fluid mixture composed of the marine fuel oil and the pretreatment desulfurization agent is supplied to the marine engine, sulfur oxides are adsorbed and removed during combustion of the fluid mixture.

A gas supply device is equipped with an oxygen enrichment membrane module, a pump portion, and an electronic control unit. The electronic control unit performs oxygen enrichment control for merging the air supplied to a first space from a second space through the oxygen enrichment membrane and containing a higher concentration of oxygen than an atmosphere with the atmosphere that has flowed into the first space and supplying the merged air and atmosphere to a combustion chamber of the cylinders by driving the pump portion, and nitrogen enrichment control for discharging air containing a higher concentration of oxygen than the atmosphere to the second space from the first space through the oxygen enrichment membrane, producing air containing a higher concentration of nitrogen than the atmosphere in the first space, and supplying the air containing the higher concentration of nitrogen to the combustion chamber by driving the pump portion.

A gas supply device is equipped with an oxygen enrichment membrane module, a pump portion, and an electronic control unit. The electronic control unit performs oxygen enrichment control for merging the air supplied to a first space from a second space through the oxygen enrichment membrane and containing a higher concentration of oxygen than an atmosphere with the atmosphere that has flowed into the first space and supplying the merged air and atmosphere to a combustion chamber of the cylinders by driving the pump portion, and nitrogen enrichment control for discharging air containing a higher concentration of oxygen than the atmosphere to the second space from the first space through the oxygen enrichment membrane, producing air containing a higher concentration of nitrogen than the atmosphere in the first space, and supplying the air containing the higher concentration of nitrogen to the combustion chamber by driving the pump portion.

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.