Abstract: Provided is an ignition plug (15) that has an antenna (54) for emitting high-frequency EM waves to combustion chamber (20) of an internal combustion engine (10), wherein the propagation velocity of the flame is augmented using the high-frequency EM waves emitted from the antenna (54). The ignition plug (15) has an ignition plug body (30) and an antenna (54). The antenna (54) is located on the front-tip side surface of the cylindrical second conductive member (33) within the ignition plug body (30), which accommodates a rod-shaped first conductive member (31) and cylindrical insulation (32) surrounding the first conductive member (31).

Abstract: The analysis apparatus 10 includes a plasma generation device 11 and an optical analysis device 13. The plasma generation device 11 generates initial plasma by energizing a substance in space to be turned into a plasma state, and maintains the plasma state by irradiating the initial plasma with electromagnetic wave for a predetermined period of time. Then, the optical analysis device 13 analyzes the target substance 15 based on a time integral value of intensity of emission from the target substance 15 in an electromagnetic wave plasma region, which is maintained by the electromagnetic wave.

Abstract: An analysis apparatus includes a plasma generation unit and an optical analysis unit. The plasma generation unit generates initial plasma by momentarily energizing a target substance to be turned into a plasma state, and maintains the target substance in the plasma state by irradiating the initial plasma with an electromagnetic wave for a predetermined period of time. The optical analysis unit identifies the target substance based on information with respect to emission intensity during a period from when the emission intensity reaches a peak due to the initial plasma until when the emission intensity increases and reaches approximately a constant value due to electromagnetic wave plasma maintained by the electromagnetic wave, or information with respect to emission intensity after the electromagnetic wave irradiation is terminated.

Abstract: The plasma generation device 30 is provided with a high frequency generation device 37 that generates a high frequency wave, and a high frequency radiator 15 that radiates the high frequency wave outputted from the high frequency generation device 37 to a target space 10, and generates plasma by supplying energy of the high frequency wave to the target space 10. In the plasma generation device 30, the high frequency generation device 37 is provided with an oscillator 41 that oscillates a high frequency wave, and an amplifier 42 that amplifies and outputs the high frequency wave oscillated by the oscillator 41 to the high frequency radiator 15. In the high frequency generating device 37 the amplifier 42 alone is integrated with the high frequency radiator 15, from among the oscillator 41 and the amplifier 42.

Abstract: An ignition/chemical reaction promotion/flame holding device and a high-performance speed-type internal combustion engine using this device are provided, whereby ignition and the spreading and holding of flames can be dramatically improved in a gas turbine, a ram machine, a rocket engine, or another speed-type internal combustion engine. An ignition/chemical reaction promotion/flame holding device of a speed-type internal combustion engine comprises a spark plug for preparing charged particles in a predetermined location in a combustor of the speed-type internal combustion engine, and a microwave oscillator and antenna for inducing plasma with a working fluid in the combustor as a starter material by irradiating the charged particles and their surrounding vicinity with microwave pulses; wherein a region in which sufficient conditions for performing combustion are met is formed in the combustor by supplying an active chemical species produced from the working fluid by the effect of the plasma.

Abstract: A mixer for mixing pulse voltage energy and electromagnetic wave energy in the same transmission line is provided with a first input terminal to which an electromagnetic wave is inputted, a second input terminal to which pulse voltage is inputted, a mixing output terminal from which the pulse voltage and the electromagnetic wave are outputted, a bar-shaped first conductive member of which one end is electrically connected to the second input terminal and the other end is electrically connected to an inner conductor of the mixing output terminal, a cylindrical second conductive member which surrounds the first conductive member with a gap therebetween and is disposed coaxially with the first conductive member and electrically connected to an inner conductor of the first input terminal, and a cylindrical third conductive member which houses the first conductive member and the second conductive member with a gap between the second conductive member and the third conductive member and is disposed coaxially with t

Abstract: To reduce the amount of exhausted unburned fuel and further improve fuel efficiency of an internal combustion engine 10 provided with an ignition device 12 that ignites fuel air mixture more forcefully than a spark discharge in a combustion chamber 20. The internal combustion engine 10 includes an internal combustion engine main body 11 formed with the combustion chamber 20 and the ignition device 12 that ignites the fuel air mixture more forcefully than the spark discharge in the combustion chamber 20. In addition, the internal combustion engine 10 includes an electromagnetic wave emission device 13 that emits an electromagnetic wave supplied from an electromagnetic wave oscillator 32 from an antenna 41. The electromagnetic wave emission device 13 emits the electromagnetic wave from the antenna 41, thereby creating an electric field for accelerating a propagation speed of a flame.

Abstract: Provided is an after-treatment apparatus for exhaust gas right after a combustion chamber, which apparatus comprises a discharge device with an electrode exposed to an exhaust port installed in a cylinder head, an antenna installed on the back face of a valve head, an electromagnetic wave transmission line installed in a valve stem with one end connected to the antenna and the other end, covered with an insulator or dielectric and extending to and connected to a power-receiving portion, which is positioned at a location fitting into the guide hole or at a location farther from the valve head in the valve stem, and an electromagnetic wave generator for feeding electromagnetic waves to the power-receiving portion. The after-treatment apparatus is configured such that discharge is generated with the electrode of the discharge device and electromagnetic waves fed from the electromagnetic wave generator through the electromagnetic wave transmission line are radiated from the antenna.

Abstract: The present invention aims at effectively emitting an electromagnetic wave to a combustion chamber from an emission antenna in an internal combustion engine that promotes combustion of an air fuel mixture utilizing the electromagnetic wave. The present invention is directed to an internal combustion engine including: an internal combustion engine main body formed with a combustion chamber; and an electromagnetic wave emission device that emits an electromagnetic wave to the combustion chamber from an emission antenna. The internal combustion engine promotes combustion of the air fuel mixture by way of the electromagnetic wave emitted to the combustion chamber. The emission antenna is provided in an insulating member and extends along the partitioning surface. The insulating member is provided on a partitioning surface that partitions the combustion chamber.

Abstract: To make it easy to adjust a location of an emission antenna in a plasma generation device that generates plasma by a discharge and enlarges the plasma by an electromagnetic wave. A plasma generation device 30 includes an electromagnetic wave generation device 31, an emission antenna 16, a high voltage generation device 14, and a discharge electrode 15. The emission antenna 16 forms a discharge gap together with the discharge electrode 15 which a high voltage outputted from the high voltage generation device 14 is applied to. The plasma generation device 30 enlarges discharge plasma using the electromagnetic wave emitted from the emission antenna 16 caused by the electromagnetic wave outputted from the electromagnetic wave generation device 31, where the discharge plasma is generated at the discharge gap by an output of a high voltage from the high voltage generation device 14.

Abstract: A plasma generation device 20 includes a passage formation member 41 arranged upstream of a purification catalyst 31 in an exhaust passage 30 and formed with an internal passage 40 that the exhaust gas passes through, and a plasma generation part 29 that generates plasma in the internal passage 40. The internal passage 40 is located in the vicinity of or abutting contact with a purification catalyst 31 at an outlet part of the internal passage so that the exhaust gas flowing through the internal passage 40 causes the plasma generated by the plasma generation part 29 to blow out from an outlet 43 of the internal passage 40 and to reach the purification catalyst.

Abstract: In a plasma device 30 that emits an electromagnetic wave to a combustion chamber 10 of an engine 20 so as to generate electromagnetic wave plasma thereby igniting mixture gas, fuel efficiency for lean burn mixture combustion of an engine 20 is improved. During a flame propagation after the mixture gas is ignited in the combustion chamber, the electromagnetic wave is emitted to the combustion chamber 10 so that electrons in a propagating flame resonate with the electromagnetic wave. The resonance between the electrons in the propagating flame and the electromagnetic wave increases flame propagation speed.

Abstract: An internal combustion engine 100 includes a cylinder 102 that defines a combustion chamber 196 causing a premixed gas to be combusted, a piston 120 that defines the combustion chamber 196 together with the cylinder 102, and reciprocates in the cylinder 102, and an active species generator 150 that generates active species. The internal combustion engine 100 promotes combustion of the mixed gas by the active species generated by the active species generator 150. The piston 120 includes an active species generation chamber 194 that is formed therein and open to a top surface of the piston 120, and in which the active species generator 150 generates the active species.

Abstract: An aim of the present invention is, in a plug for high frequency emission disposed at an end of a casing having an emission antenna, to suppress a high frequency noise emitted from the emission antenna. The present invention is directed to a plug for high frequency emission including a transmission line for transmitting an electromagnetic wave, an emission antenna for emitting the electromagnetic wave supplied via the transmission line, and a casing constituted by a cylindrical shaped conductor, provided with the emission antenna at one end of the casing, and accommodating therein the transmission line extending from the emission antenna toward the other end of the casing. Inside of the casing, a central conductor electrically connected to the emission antenna and an outer conductor spaced apart from and surrounding the central conductor are embedded in an insulator so as to collectively constitute the transmission line, and the outer conductor is disposed in and held in non-contact with the casing.

Abstract: An spark ignition type internal combustion engine allows the spark discharge by the ignition plug to react with the electric field created in the combustion chamber and generates the plasma, thereby igniting the fuel air mixture to reduce the emission of the unburned fuel and to improve fuel efficiency of the internal combustion engine in a spark ignition type internal combustion engine that allows an electric field created in a combustion chamber to react with a spark discharge by an ignition plug and generates plasma, thereby igniting fuel air mixture. The engine includes an electromagnetic wave emission device that emits an electromagnetic wave in the combustion chamber when the fuel air mixture is combusted, and a protruding member protruding from a partitioning surface that partitions the combustion chamber. At least a part of the protruding member is made of a conductor.

Abstract: It is configured such that plasma generated at a time of ignition should diffuse over an entire combustion chamber in a spark ignition type internal combustion engine in order to improve fuel efficiency. An ignition device for a spark ignition type internal combustion engine is provided including an ignition plug and a transmission antenna provided in the vicinity of the ignition plug and adapted to transmit an electromagnetic wave to a combustion chamber. The ignition device allows a spark discharge generated between a central electrode and a ground electrode of the ignition plug to react with an electric field created via the transmission antenna in the combustion chamber so as to generate plasma and ignite fuel air mixture. A receiving antenna is arranged on a combustion chamber-facing surface of at least one of an intake valve and an exhaust valve, and is adapted to receive the electromagnetic wave transmitted from the transmission antenna.

Abstract: A plasma equipment comprising a microwave oscillator for generating a predetermined microwave band, a microwave resonant cavity for allowing the predetermined microwave band to resonate, and microwave radiation means for radiating the microwave into the microwave resonant cavity, wherein the microwave radiation means is a microwave radiation antenna having the shape and the size so as to form a strong electric field of the microwave in a plasma generation field formed by the microwave.

Abstract: An internal combustion engine has an internal combustion engine body formed with a combustion chamber and an ignition device that ignites an air-fuel mixture in the combustion chamber. Repetitive combustion cycles, including ignition of the air-fuel mixture by the ignition device and combustion of the air-fuel mixture, are executed. The internal combustion engine further has an electromagnetic (EM) wave-emitting device that emits EM radiation to the combustion chamber; a plurality of receiving antennas located on a zoning material that defines the combustion chamber, where the antennas resonate to the EM radiation emitted to the combustion chamber from the EM wave-emitting device; and a switching means that switches the receiving antenna resonating to the EM radiation emitted to the combustion chamber from the EM wave-emitting device among the plurality of receiving antennas.

Abstract: An internal combustion engine includes an internal combustion engine body formed with a combustion chamber, and an ignition device to ignite an air-fuel mixture in the combustion chamber. Repetitive combustion cycles, including the ignition of the air-fuel mixture by the ignition device and combustion of the air-fuel mixture, are executed. The internal combustion engine further has an electromagnetic (EM) wave-emitting device that emits EM radiation to the combustion chamber; a plurality of receiving antennas located on an outer circumference side of the zoning material that defines the combustion chamber; antenna which resonate with to the EM radiation that is emitted into the combustion chamber from the EM-wave-emitting device; and a control means which controls the EM-wave-emitting device such that the radiating antenna emits EM radiation into the combustion chamber while a flame caused by the ignition of the air-fuel mixture propagates.

Abstract: The present invention aims at effectively improving a propagation speed of a flame utilizing an electromagnetic wave in an internal combustion engine that promotes combustion of an air fuel mixture utilizing the electromagnetic wave. The present invention is directed to an internal combustion engine including: an internal combustion engine main body formed with a combustion chamber; and an ignition device that ignites the air fuel mixture in the combustion chamber, wherein combustion cycles, in which the ignition device ignites and combusts the air fuel mixture, are repeated.