A fuel oxygen reduction unit for an engine is provided. The fuel oxygen reduction unit includes a contactor including a fuel inlet that receives an inlet fuel flow and a stripping gas inlet that receives an inlet stripping gas flow, the contactor configured to form a fuel/gas mixture; a separator that receives the fuel/gas mixture, the fuel oxygen reduction unit defining a circulation gas flowpath from the separator to the contactor; and a stripping gas source selectively in fluid communication with the circulation gas flowpath for selectively introducing a stripping gas from the stripping gas source to the circulation gas flowpath, wherein the stripping gas source is an accessory gearbox.

The two-stroke internal combustion engine has an engine crankcase including a sealing mechanism that, at all times and under all circumstances, confine the oil in the lower crankcase. The two-stroke engine uses a gaseous fuel based on dihydrogen and dioxygen, and releases only water vapor charged with unused gaseous fuel. A device for recycling the exhaust gases serves to recover the unused gaseous fuel and to reinject it at the intake opening, or the exhaust opening.

The two-stroke internal combustion engine has an engine crankcase including a sealing mechanism that, at all times and under all circumstances, confine the oil in the lower crankcase. The two-stroke engine uses a gaseous fuel based on dihydrogen and dioxygen, and releases only water vapor charged with unused gaseous fuel. A device for recycling the exhaust gases serves to recover the unused gaseous fuel and to reinject it at the intake opening, or the exhaust opening.

An apparatus and method to desulfurize a biogas containing sulfur. Since biogas is produced by an anaerobic digester from human, animal, kitchen and agriculture's wastes, it is a short term recycled product from the photosynthesis of CO.sub.2, and has a net zero carbon emission. The sulfur compounds in the biogas can be removed by the following steps: (1) converting ail sulfur compounds into H.sub.2S by the hydrogen produced from the biogas over Pt group metal catalysts; (2) adsorbing the H.sub.2S at high temperature by the regenerable Pt group metal catalyst and adsorbents. The desulfurized biogas is further converted by an ATR/CPO reformer or a steam generating reformer to produce various reformates.

An apparatus and method to desulfurize a biogas containing sulfur. Since biogas is produced by an anaerobic digester from human, animal, kitchen and agriculture's wastes, it is a short term recycled product from the photosynthesis of CO.sub.2, and has a net zero carbon emission. The sulfur compounds in the biogas can be removed by the following steps: (1) converting ail sulfur compounds into H.sub.2S by the hydrogen produced from the biogas over Pt group metal catalysts; (2) adsorbing the H.sub.2S at high temperature by the regenerable Pt group metal catalyst and adsorbents. The desulfurized biogas is further converted by an ATR/CPO reformer or a steam generating reformer to produce various reformates.

An internal combustion engine system includes an internal combustion engine, a turbocharger, and a flow ratio adjustment device including a branch configured to divide the compressed into first compressed air and second compressed air and a valve device configured to adjust a flow rate of the first compressed air and a flow rate of the second compressed air. The system additional includes a reformer configured to discharge first generated as a result of a reaction between the first compressed air and the fuel gas, a junction configured to generate second gas including the first gas and the second compressed air, an air-fuel mixture generator configured to generate an air-fuel mixture including the second gas and the fuel gas, and a controller configured to determining a ratio of the flow rate of the first compressed air based on the temperature of the air-fuel mixture.

The invention provides a fuel treatment system for cracking hydrocarbons in fuel for combustion engines. The system comprises a primary ducting component having an exhaust gas inlet zone, and a secondary ducting component which includes a fuel enrichment component and a processing chamber. The processing chamber may have an outlet zone connectable to the combustion engine. The inlet zone of the primary ducting component and the outlet zone of the processing chamber may be configured in a heat exchange relationship with each other and in a counter-current gas flow direction with respect to each other. During operation of the system, heat from hottest volumes of the exhaust gas flowing in a furthest upstream portion of the ducting arrangement may be transferred to fuel-enriched exhaust gas flowing in a furthest downstream portion of the processing chamber. The system may include turbulence-inducing formations, including vortex-inducing formations configured in accordance with mathematical sequences such as the Fibonacci sequence.

The invention provides a fuel treatment system for cracking hydrocarbons in fuel for combustion engines. The system comprises a primary ducting component having an exhaust gas inlet zone, and a secondary ducting component which includes a fuel enrichment component and a processing chamber. The processing chamber may have an outlet zone connectable to the combustion engine. The inlet zone of the primary ducting component and the outlet zone of the processing chamber may be configured in a heat exchange relationship with each other and in a counter-current gas flow direction with respect to each other. During operation of the system, heat from hottest volumes of the exhaust gas flowing in a furthest upstream portion of the ducting arrangement may be transferred to fuel-enriched exhaust gas flowing in a furthest downstream portion of the processing chamber. The system may include turbulence-inducing formations, including vortex-inducing formations configured in accordance with mathematical sequences such as the Fibonacci sequence.

The present invention relates to a combination of components suitable to break down liquid fuels into short chain molecules and gaseous states of matter by heating and pressurizing the combustible/flammable liquids to the point where they phase change into a supercritical fluid, then releasing some fluid as needed into a vapor accumulation tank that has a lower pressure. This subsequent drop in pressure phase changes the fluid from a supercritical state into a consistent and safe gaseous state. From there, the fuel can be delivered to the engine via direct injectors, gaseous fuel carburetors, or a regulating valve such as a needle valve. Because gaseous fuels readily homogenize with intake air and oxidizers, the present invention allows any engine to cleanly, reliably, and consistent use any fuel without adjustment. This allows any engine to run off any combustible liquid, in effect creating the ultimate multifuel system.

The present invention relates to a combination of components suitable to break down liquid fuels into short chain molecules and gaseous states of matter by heating and pressurizing the combustible/flammable liquids to the point where they phase change into a supercritical fluid, then releasing some fluid as needed into a vapor accumulation tank that has a lower pressure. This subsequent drop in pressure phase changes the fluid from a supercritical state into a consistent and safe gaseous state. From there, the fuel can be delivered to the engine via direct injectors, gaseous fuel carburetors, or a regulating valve such as a needle valve. Because gaseous fuels readily homogenize with intake air and oxidizers, the present invention allows any engine to cleanly, reliably, and consistent use any fuel without adjustment. This allows any engine to run off any combustible liquid, in effect creating the ultimate multifuel system.