An example system can include a combustion chamber of a jet engine, a radio-frequency power source, a direct-current power source, a resonator, and a fuel conduit. The resonator can be electromagnetically coupled to the radio-frequency power source and have a resonant wavelength. Further, the resonator can include (i) a first conductor, (ii), a second conductor, and (iii) a dielectric between the first conductor and the second conductor. The resonator can be configured to provide at least one of a plasma corona or electromagnetic waves. The fuel conduit can be configured to couple to a fuel source and have a fuel outlet for expelling fuel into a combustion zone of the combustion chamber. A portion of the fuel conduit is disposed within the first conductor.

An example system can include a combustion chamber of a jet engine, a radio-frequency power source, a direct-current power source, a resonator, and a fuel conduit. The resonator can be electromagnetically coupled to the radio-frequency power source and have a resonant wavelength. Further, the resonator can include (i) a first conductor, (ii), a second conductor, and (iii) a dielectric between the first conductor and the second conductor. The resonator can be configured to provide at least one of a plasma corona or electromagnetic waves. The fuel conduit can be configured to couple to a fuel source and have a fuel outlet for expelling fuel into a combustion zone of the combustion chamber. A portion of the fuel conduit is disposed within the first conductor.

An example system and corresponding method includes a jet engine combustor and a plurality of resonators. The combustor includes (i) a combustion zone, (ii) one or more fuel inlets for introducing fuel into the combustion zone for combustion, and (iii) one or more fins protruding into the combustion zone and configured to guide combustion of the fuel along a flame path. The resonators can each have a respective resonant wavelength and can each provide a respective plasma corona in the combustion zone when excited with a respective signal having a wavelength proximate to an odd-integer multiple of one-quarter () of the respective resonant wavelength. A radio-frequency power source can excite the resonators with the respective signals so as to provide the respective plasma coronas in the combustion zone and cause combustion of the fuel along the flame path.

Example implementations relate to jet engines that include resonator-based diagnostics. An example implementation includes a jet engine. The jet engine includes a combustion chamber configured to house a combustion event of a fuel mixture. The jet engine also includes a resonator having a characteristic impedance and a resonant wavelength. The resonator includes a first conductor and a second conductor separated from one another by an interstitial space that is exposed to an environment of the combustion chamber. Further, the jet engine includes a controller communicatively coupled to the resonator and configured to perform operations. The operations include determining a characteristic of the resonator selected from the group consisting of the characteristic impedance and the resonant wavelength. The operations also include, based on the determined characteristic, determining a parameter of the combustion chamber.

Example implementations relate to jet engines that include resonator-based diagnostics. An example implementation includes a jet engine. The jet engine includes a combustion chamber configured to house a combustion event of a fuel mixture. The jet engine also includes a resonator having a characteristic impedance and a resonant wavelength. The resonator includes a first conductor and a second conductor separated from one another by an interstitial space that is exposed to an environment of the combustion chamber. Further, the jet engine includes a controller communicatively coupled to the resonator and configured to perform operations. The operations include determining a characteristic of the resonator selected from the group consisting of the characteristic impedance and the resonant wavelength. The operations also include, based on the determined characteristic, determining a parameter of the combustion chamber.

A device increasing engine efficiency and reducing exhaust and noise, comprising: the liquid catalyst pressured spraying exhaust gas reducing system, the exhaust gas bypass pipe, and the high temperature plasma exhaust gas reducing device, and the three are linked to achieve the effect of: without replacing the catalytic converter, the catalyst carrier can easily remove accumulated dirt and the block on the through holes, reduce the resistance of the exhaust gas, increase the horsepower of the engine, etc., thereby improving the efficiency of the engine and reducing the exhaust gas, so as to achieve degrading pollutants, makes vehicles comply with environmental regulations, and saves maintenance costs.

A device increasing engine efficiency and reducing exhaust and noise, comprising: the liquid catalyst pressured spraying exhaust gas reducing system, the exhaust gas bypass pipe, and the high temperature plasma exhaust gas reducing device, and the three are linked to achieve the effect of: without replacing the catalytic converter, the catalyst carrier can easily remove accumulated dirt and the block on the through holes, reduce the resistance of the exhaust gas, increase the horsepower of the engine, etc., thereby improving the efficiency of the engine and reducing the exhaust gas, so as to achieve degrading pollutants, makes vehicles comply with environmental regulations, and saves maintenance costs.

A system for providing ultraviolet treatment of volatile organic compounds (VOCs) is disclosed. The system can include a first gas conduit to carry a stream of gas having VOCs and a second gas conduit to carry a second stream of gas containing a partial pressure of water vapor. A gas treatment unit can be coupled to the first gas conduit and the second gas conduit. The gas treatment unit can form hydroxyl radicals from the water vapor in the stream of gas carried by the second gas conduit and inject the radicals in the first gas conduit to decrease the presence of the VOCs. The gas treatment unit can include a photocatalyst component and at least one ultraviolet radiation source to irradiate the photocatalyst component with ultraviolet radiation. To this extent, the irradiated photocatalyst component disassociates the gas containing the water vapor to form the hydroxyl radicals.

A system for providing ultraviolet treatment of volatile organic compounds (VOCs) is disclosed. The system can include a first gas conduit to carry a stream of gas having VOCs and a second gas conduit to carry a second stream of gas containing a partial pressure of water vapor. A gas treatment unit can be coupled to the first gas conduit and the second gas conduit. The gas treatment unit can form hydroxyl radicals from the water vapor in the stream of gas carried by the second gas conduit and inject the radicals in the first gas conduit to decrease the presence of the VOCs. The gas treatment unit can include a photocatalyst component and at least one ultraviolet radiation source to irradiate the photocatalyst component with ultraviolet radiation. To this extent, the irradiated photocatalyst component disassociates the gas containing the water vapor to form the hydroxyl radicals.

Provided is a fuel reformer for a vehicle. The vehicle includes an internal combustion engine, a fuel tank in which fuel of the internal combustion engine is stored, and a fuel supply device configured to supply the fuel in the fuel tank to the internal combustion engine. The fuel reformer includes an irradiator configured to emit light from an irradiation portion. The irradiation portion is disposed at a position where the fuel stored in the fuel tank is irradiated with the light without the light passing through a gas phase region in the fuel tank.