Abstract: In order that it may be possible to form a strong-electric-field region at a level at which a electromagnetic waves are easily absorbed by an object to be heated 20 with low power in an electromagnetic-wave heating device 10 for heating the object to be heated 20 utilizing an electromagnetic waves, the electromagnetic-wave heating device 10 comprises: an oscillator 21 for outputting an electromagnetic waves; and a radiation antenna 22 being a conductor that radiates the electromagnetic waves outputted from the oscillator 21 and having a resonance structure in which resonance occurs in the conductor by the electromagnetic waves in a frequency band transmitted from the oscillator 21, and is configured that a strong-electric-field region for heating the object to be heated is formed along the radiation antenna 22 by the electromagnetic waves supplied from the oscillator 21 to the radiation antenna 22.

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.

Abstract: To reduce a length in a longitudinal direction of a mixer, and to provide a mixer that is attachable even in a small space for mounting.

Abstract: The object is to provide an injector with a built-in ignition device that can achieve downsize of device as a whole without changing significantly the structure of a fuel injection device. The injector with the built-in ignition device comprises an ignition device 3 and a fuel injection device 2. In the ignition device 3, an electromagnetic wave oscillated from an electromagnetic wave oscillator MW is boosted by a booster that is constituted by a resonance structure, a potential difference between a ground electrode 51 and a discharge electrode 31 is increased, and a discharge is caused. In the fuel injection device 2, a valve body part of a nozzle needle 24 is moved toward or away from a valve seat (orifis) 23a, and thereby, the fuel injection control is performed.

Abstract: To heat an object locally by automatically recognizing a shape of the object and emitting an electromagnetic wave based on the shape without enlarging a device size. An electromagnetic wave heating system comprises a heat chamber having a wall surface, in which an object is placed to be heated, a flat antenna arranged on the wall surface of the heat chamber and configured to emit the electromagnetic wave so as to heat the object inside the heat chamber, and a controller configured to control a movement of the flat antenna. The flat antenna comprises a plurality of antennas arranged in an array manner, and the controller detects a shape or a temperature distribution of the object based on a reflected power that is generated when the electromagnetic wave is emitted from the plurality of antennas, and determines a size of microwave supplied into each of the plurality of antennas based on a detection result thereof.

Abstract: To realize a reduction in size of an electromagnetic wave heating system that utilizes water vapor. The electromagnetic wave heating system comprises a heat chamber having a first wall surface and a second wall surface different from the first wall surface, in which an object is placed to be heated, a flat antenna arranged on the first wall surface of the heat chamber and configured to emit an electromagnetic wave so as to heat an object inside the heating chamber, a discharger arranged on the second wall surface and configured to generate a discharge plasma by occurring a high voltage through a resonation structure of the electromagnetic wave, and an oscillator formed by a semiconductor element and configured to output the electromagnetic wave, and it is configured that the electromagnetic wave outputted from the oscillator is supplied into the flat antenna and the discharger.

Abstract: An erosion of an electrode is prevented in a spark plug that performs an ignition by use of a spark discharge and an electromagnetic wave. The spark plug that a pulse voltage for a spark discharge and an electromagnetic wave supplied into the spark discharge as an energy are applied to a center electrode, the spark plug comprises the center electrode, an insulator including an axis hole into which the center electrode is engaged, a ground electrode configured to form a space between the ground electrode and the center electrode in which the spark discharge is generated, and a cylindrical conductor that is arranged at an outer circumference of the insulator, and an annular member is formed at an inner circumference of the cylindrical conductor and at a position where a distance from a distal end surface of the cylindrical conductor is within a range between ? wavelength and ¼ wavelength of the electromagnetic wave.

Abstract: An ignition system improves an air-fuel-ratio, i.e., good mileage and lean burn without changing a gasoline engine structure significantly. The ignition system comprises an electromagnetic wave generator including a first output part and a second output part configured to output an electromagnetic wave, a discharge device comprising a booster and a discharger provided at an output side of the booster, the booster having a resonance structure configured to boost an electromagnetic wave inputted from the first output part so as to cause a discharge from the discharger, and an electromagnetic wave emitter configured to emit an electromagnetic wave inputted from the second output part. The electromagnetic wave generator decreases an output power from the first output part, while the electromagnetic wave generator increases the output power from the second output part when an amount of a reflected wave from the discharge device exceeds a predetermined value.

Abstract: To provide an ignition plug having low power loss even though iron is a main component of a center electrode thereof, to which a high frequency power such as a microwave is electrically supplied. A low impedance layer 6 composed of a material having magnetic permeability lower than iron is provided between an outer peripheral surface of a center electrode 2 and an inner peripheral surface of an axial hole 30 of an insulator 3. The low impedance layer 6 is in contact with at least the outer peripheral surface (surface) of the center electrode 2, thereby reducing power loss of an electromagnetic wave flowing on the surface of the center electrode 2. More particularly, the low impedance layer 6 is made of silver, copper, gold, aluminum, tungsten, molybdenum, titanium, zirconium, niobium, tantalum, bismuth, palladium, lead, tin, an alloy composed mainly of these metals, or a composite material of these metals.

Abstract: An electromagnetic wave oscillation device includes: a buck-boost circuit having buck-boosters and switching elements; an electromagnetic wave oscillator; an amplifier to amplify an electromagnetic wave and supply an amplified electromagnetic wave to a resistive part; a detector to detect a reflected wave from the resistive part; and a controller to send to one of the switching elements an operation signal in predetermined order, synchronizing with an oscillation timing of the electromagnetic wave oscillator, to output a current from the corresponding buck-boosters to the amplifier in a non-smooth manner. When a detected value of the reflected wave exceeds a predetermined value upon said current output by operating the one of the switching elements, the controller stops sending the operation signal to one or more of the other switching elements that are supposed to output the current after said current output by operating the one of the switching elements.

Abstract: A cam follower is constituted by an outer ring which has an outer track surface in its inner circumference; a stud which has an inner track surface opposed to the outer track surface, a flange portion abutting on one side of the inner track surface, a side plate fitting portion and a mounting shaft portion abutting on another side of the inner track surface in this order, and a fiber flow formed continuously from the flange portion to the inner track surface along their outer circumferences; rolling elements which are arranged between the outer track surface and inner track surface; and an inner side plate which is pressed into the side plate fitting portion to work with the flange portion for limiting axial movement of the outer ring and the rolling elements.

Abstract: In an internal combustion engine that causes a predetermined gas flow in a combustion chamber, discharge plasma generated by a discharge device is caused to effectively absorb energy of an electromagnetic wave emitted from an electromagnetic wave emission device. At a time when a discharge operation and an emission operation are simultaneously performed so as to ignite a fuel air mixture, an emitting position of the electromagnetic wave on an antenna during the emission operation is located downstream of the discharge gap in a direction of the gas flow at the discharge gap so as to face toward the discharge plasma that has been drifted due to the gas flow.

Abstract: The object is to provide an injector with a built-in ignition device that can achieve downsize of device as a whole without changing significantly the structure of a fuel injection device. The injector with the built-in ignition device comprises an ignition device 3 and a fuel injection device 2. In the ignition device 3, an electromagnetic wave oscillated from an electromagnetic wave oscillator MW is boosted by a booster that is constituted by a resonance structure, a potential difference between a ground electrode 51 and a discharge electrode 31 is increased, and a discharge is caused. In the fuel injection device 2, a valve body part of a nozzle needle 24 is moved toward or away from a valve seat (orifis) 23a, and thereby, the fuel injection control is performed.

Abstract: An ignition device is provided, which can boost an electromagnetic wave supplied by a resonance structure, and cause a discharge by enhancing a potential difference between a discharge electrode and a ground electrode, and even though such a structure of the ignition device, a downsize and a thickness reduction, specifically, the thickness reduction can be achieved. On a main surface of a rectangular insulting substrate (2), an input electrode (3), a coupling electrode (4), a discharge electrode (6), and a ground electrode (7), are provided. The input electrode (3) is connected to an outside terminal on one shorter side. The coupling electrode (4) is capacity-coupled with the input electrode (3). The discharge electrode (6) is connected to the coupling electrode (4) on the other shorter side through a coupling line (5).

Abstract: [PROBLEMS] An ignition plug is provided, in which a tip end part of a central electrode is not eroded and an electric power loss of the electromagnetic wave can be reduced, even in a case where a configuration is performed such that a high voltage for discharge and an electromagnetic wave are supplied from a terminal part side of an ignition plug. An electrode part 2 comprises a central electrode 2A including an electrode chip part for generating the spark discharge with the ground electrode 5, and a cylindrical insulating tube member 2B for covering the central electrode 2A. On the outer peripheral surface of the insulating tube member 2B, a conductive member 21 is provided so as to electrically connect the central electrode 2A with a terminal part 20 for receiving an electric power from the outside.

Abstract: A cam follower is constituted by an outer ring which has an outer track surface in its inner circumference; a stud which has an inner track surface opposed to the outer track surface, a flange portion abutting on one side of the inner track surface, a side plate fitting portion and a mounting shaft portion abutting on another side of the inner track surface in this order, and a fiber flow formed continuously from the flange portion to the inner track surface along their outer circumferences; rolling elements which are arranged between the outer track surface and inner track surface; and an inner side plate which is pressed into the side plate fitting portion to work with the flange portion for limiting axial movement of the outer ring and the rolling elements.

Abstract: To provide an ignition plug having low power loss even though iron is a main component of a center electrode thereof, to which a high frequency power such as a microwave is electrically supplied. A low impedance layer 6 composed of a material having magnetic permeability lower than iron is provided between an outer peripheral surface of a center electrode 2 and an inner peripheral surface of an axial hole 30 of an insulator 3. The low impedance layer 6 is in contact with at least the outer peripheral surface (surface) of the center electrode 2, thereby reducing power loss of an electromagnetic wave flowing on the surface of the center electrode 2. More particularly, the low impedance layer 6 is made of silver, copper, gold, aluminum, tungsten, molybdenum, titanium, zirconium, niobium, tantalum, bismuth, palladium, lead, tin, an alloy composed mainly of these metals, or a composite material of these metals.

Abstract: Disclosed is a microwave oven provided with: a heating chamber (2) for housing the object to be cooked therein; a magnetron (7) that oscillates by having a voltage applied thereto, and generates a microwave to be supplied to the heating chamber (2); a radio wave sensor (11) for detecting the microwave generated by the magnetron (7); a timer (15) for measuring an oscillation starting time that is a period of time from when the voltage is applied to the magnetron (7) to when the microwave is detected by the radio wave sensor (11) due to the oscillation; and a notification unit (6) for sending a notice about the timing at which the magnetron (7) should be exchanged. When the oscillation starting time becomes longer than a prescribed period of time, a notice about that fact is sent by the notification unit (6).

Abstract: At least the surfaces of rolling elements of a rolling bearing are each randomly formed with an innumerable number of microconcave-like pits. The surface roughness parameter Ryni of the surfaces provided with the pits is in a range of 0.4 to 1.0 ?m, and the Sk value is ?1.6 or below.

Abstract: A cam follower is constituted by an outer ring which has an outer track surface in its inner circumference; a stud which has an inner track surface opposed to the outer track surface, a flange portion abutting on one side of the inner track surface, a side plate fitting portion and a mounting shaft portion abutting on another side of the inner track surface in this order, and a fiber flow formed continuously from the flange portion to the inner track surface along their outer circumferences; rolling elements which are arranged between the outer track surface and inner track surface; and an inner side plate which is pressed into the side plate fitting portion to work with the flange portion for limiting axial movement of the outer ring and the rolling elements.