Abstract:
To provide an electromagnetic wave discharge emission device, a discharger in small size for causing a discharge only by an electromagnetic wave, that can significantly be reduced in length in a longitudinal direction, and configured to emit the electromagnetic wave into a target space based on an output of the supplied electromagnetic wave. The electromagnetic wave discharge emission device comprises an electromagnetic wave oscillator MW configured to oscillate an electromagnetic wave, a controller 2 configured to control the electromagnetic wave oscillator MW, a first substrate 10 provided with a plurality of discharge emission patterns 11 each having a power receiving end 11a on the main surface side, and a second substrate 20 provided with a feed pattern 22 having a power receiving port 21 configured to receive a power of the electromagnetic wave from the electromagnetic wave oscillator MW and a plurality of power feed ends 22a each connected through a via to one of the power receiving ends 11a, a distance on the feed pattern 22 from the power receiving port 21 to each power receiving end 11a of the corresponding discharge emission pattern 11 being equal to one another. Each of the discharge emission patterns 11 is formed in a spiral shape that has at a center thereof the corresponding power receiving end (s) 11a connected to the feed pattern 22 and has a length which corresponds to 1/4 wavelength of the electromagnetic wavelength supplied to the feed pattern 22.
Abstract:
To shorten a time period of a catalyst heating without increasing the cost largely. A catalyst heating system 1 for heating a catalyst provided at an exhaust passage 5 of a vehicle, the system comprises a purifying catalyst 6 provided in the exhaust passage 5, a water storage part 2 provided at an upstream of the purifying catalyst 6 in the exhaust passage 5 and along a bottom side of the exhaust passage 5, an upper part of the water storage part 2 being opened to the exhaust passage 5, an electromagnetic wave emitter 3 arranged above the water storage part 2 and configured to emit an electromagnetic wave to moisture stored inside the water storage part 2, thereby heating up the moisture and generating water vapor therefrom, and a controller 4 configured to control the electromagnetic wave emitter 3, and the controller 4 controls the electromagnetic wave emitter 3 to emit the electromagnetic wave for a predetermined time period when an engine of the vehicle starts to run.
Abstract:
The present invention provides a plasma generating device that improves plasma generating efficiency for the power used and can further accommodate changes in plasma generating state because of changes in conditions of surroundings and the like. The present invention is a plasma generating device provided with an electromagnetic wave radiating device (13), which has an electromagnetic wave generating device (31) that oscillates electromagnetic waves and a radiating antenna (16) that radiates electromagnetic waves oscillated by the electromagnetic wave generating device (31), and a control device (35) that controls the electromagnetic wave radiating device (13). The plasma generating device is characterized by the electromagnetic wave radiating device (13) being provided with a power detector (15) that detects traveling wave power output by the electromagnetic wave generating device (31) and reflected wave power reflected from the radiating antenna (16) and the control device (35) automatically controlling the oscillation pattern for the electromagnetic waves on the basis of the proportion of the value for the reflected wave power to the value for the traveling wave power detected by the power detector (15).
Abstract:
[Problem] The purpose of the present invention is to provide a method with which it is possible to precisely and conveniently measure the cylinder volume when a piston is in the top dead center position, without the measurement being influenced by the gap around the piston ring, in the combustion chamber of a reciprocating engine. [Solution] The present invention is a volume measuring device for a cylinder in a reciprocating engine, the volume measuring device being characterised by comprising: a coating forming means which, using pyrolytic resin, forms a coating on either part or all of the inner surface of the cylinder; a pressure measuring means which introduces a fixed quantity of gas into the cylinder in which the coating has been formed, or derives a fixed quantity of gas from the inside of the cylinder, and measures the pressure within the cylinder before and after the introduction/emission; and a volume calculating means which uses the pressure value obtained by the pressure measuring means to calculate the volume of the cylinder.
Abstract:
To simplify a configuration of a plasma generation device that generates plasma by means of an electromagnetic wave using thermal electrons as a trigger. The plasma generation device 30 includes: a thermal electron emission member 14 that emits thermal electrons when heated; a heating device 13 that heats the thermal electron emission member 14 by means of an electromagnetic wave; and an electric field concentration member 61 that concentrates in the vicinity of the thermal electron emission member 14 an electric field of the electromagnetic wave generated by the heating device 13. The plasma generation device 30, while causing the heating device 13 to heat the thermal electron emission member 14, causes the electric field concentration member 61 to concentrate the electric field of the electromagnetic wave in the vicinity of the thermal electron emission member 14, thereby generating plasma in the vicinity of the thermal electron emission member 14.
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:
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 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 37the amplifier 42 alone is integrated with the high frequency radiator 15, from among the oscillator 41 and the amplifier 42.
Abstract:
The present invention provides a plasma generator provided with a mixing circuit, said plasma generator being reduced in size and capable of being easily installed in a restricted space inside an engine. The present invention is a heat engine or a plasma generator provided with an ignition coil for supplying a discharge voltage, an electromagnetic wave oscillator that generates electromagnetic waves, a mixer that mixes energy for discharge with electromagnetic wave energy, and a spark plug that causes a discharge and introduces the electromagnetic wave energy to a reaction region. The discharge and electromagnetic wave energy are used together in the reaction region, wherein a combustion reaction or plasma reaction is carried out, triggering a combustion reaction or plasma reaction. The plasma generator is characterized in that part of a member that constitutes the spark plug is used as part of a member that forms the mixer.