WO2013011968A1 - プラズマ生成装置、及び内燃機関 - Google Patents
プラズマ生成装置、及び内燃機関 Download PDFInfo
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- WO2013011968A1 WO2013011968A1 PCT/JP2012/068011 JP2012068011W WO2013011968A1 WO 2013011968 A1 WO2013011968 A1 WO 2013011968A1 JP 2012068011 W JP2012068011 W JP 2012068011W WO 2013011968 A1 WO2013011968 A1 WO 2013011968A1
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- electromagnetic wave
- plasma
- combustion engine
- internal combustion
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
- F02P23/045—Other physical ignition means, e.g. using laser rays using electromagnetic microwaves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
- F02M27/04—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by electric means, ionisation, polarisation or magnetism
- F02M27/042—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by electric means, ionisation, polarisation or magnetism by plasma
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P3/00—Other installations
- F02P3/01—Electric spark ignition installations without subsequent energy storage, i.e. energy supplied by an electrical oscillator
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/02—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma
- H05H1/04—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma using magnetic fields substantially generated by the discharge in the plasma
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
- H05H1/461—Microwave discharges
- H05H1/463—Microwave discharges using antennas or applicators
Definitions
- the present invention relates to a plasma generator for generating electromagnetic plasma and an internal combustion engine that promotes combustion of an air-fuel mixture using electromagnetic waves.
- Japanese Patent Application Laid-Open No. 2010-001827 discloses an ignition device for an internal combustion engine as this type of plasma generation device.
- An ignition device for an internal combustion engine described in Japanese Patent Application Laid-Open No. 2010-001827 radiates a microwave generated from a microwave oscillating device into a cylinder to generate a low temperature plasma. By generating this low temperature plasma, a large amount of OH radicals can be generated continuously from the moisture in the gas mixture.
- the microwave oscillation device is in a solid state.
- the present invention has been made in view of such a point, and the object thereof is to generate an electromagnetic wave plasma by radiating an electromagnetic wave amplified using a solid-state amplification element to a target space,
- the purpose is to reduce the size of the electromagnetic wave generator.
- 1st invention is equipped with the electromagnetic wave generator which outputs the electromagnetic waves amplified using the amplification element made into the solid state, and the radiation antenna for radiating the electromagnetic waves output from the electromagnetic wave generator to the object space,
- a plasma generating apparatus that outputs electromagnetic waves to the radiation antenna without reducing the peak of the above.
- the output waveform of the electromagnetic wave generator has a characteristic that a peak appears at the rising edge, and the electromagnetic wave is output to the radiation antenna without reducing the rising peak of the output waveform (power waveform).
- the output peak appears first.
- electromagnetic wave plasma when electromagnetic wave plasma is generated, a large electromagnetic wave energy is required for breakdown for generating electromagnetic wave plasma. Once the electromagnetic wave plasma is generated, the electromagnetic wave plasma can be maintained with lower electromagnetic wave energy as compared with the breakdown.
- the electromagnetic wave is output to the radiation antenna without reducing the rising peak of the output waveform of the amplification element.
- a peak increasing means for increasing the output of the electromagnetic wave generator during the peak period.
- the output of the electromagnetic wave generator is increased during the peak period of the electromagnetic wave radiation period.
- a third invention includes the plasma generation device according to the first or second invention and an internal combustion engine body in which a combustion chamber is formed, and the plasma generation device generates electromagnetic wave plasma using the combustion chamber as the target space.
- An internal combustion engine An internal combustion engine.
- the plasma generation device generates electromagnetic wave plasma with the combustion chamber as a target space.
- the plasma density changes due to fluctuations in the output of electromagnetic waves, which degrades the quality of the product.
- plasma is used in an internal combustion engine, there is almost no adverse effect due to changes in plasma density.
- an electromagnetic wave having a peak at the rising edge is used.
- an internal combustion engine body in which a combustion chamber is formed, an electromagnetic wave generator that outputs an electromagnetic wave amplified using a solid-state amplification element, and the electromagnetic wave output from the electromagnetic wave generator
- An internal combustion engine that promotes combustion of the air-fuel mixture by radiating electromagnetic waves from the radiating antennas to the combustion chamber, wherein the electromagnetic wave generator has a rising waveform of its output waveform. And output an electromagnetic wave to the radiation antenna without reducing the rising peak of the output waveform.
- the electromagnetic wave is output to the radiation antenna without reducing the rising peak of the output waveform of the amplification element. Therefore, the average output of the electromagnetic wave generator can be reduced because only the output during the peak period of the electromagnetic wave emission period needs to be equal to or higher than the energy required for breakdown. Accordingly, the heat generation amount of the amplifying element can be reduced, so that the electromagnetic wave generator can be reduced in size.
- the output of the electromagnetic wave generator is increased during the peak period of the electromagnetic wave radiation period. Therefore, breakdown can be surely generated and electromagnetic wave plasma can be stably generated.
- the internal combustion engine since the internal combustion engine has almost no adverse effect due to the change in plasma density, an electromagnetic wave having a peak at the rising edge is used. Therefore, it is possible to reduce the size of the electromagnetic wave generator with little influence on the internal combustion engine.
- plasma may be generated under a high pressure such as during a compression stroke.
- a high-power electromagnetic wave is required for breakdown as compared with the case of using plasma in the manufacturing process.
- the electromagnetic wave generator can be reduced in size.
- FIG. 1 is a longitudinal sectional view of an internal combustion engine according to Embodiment 1.
- FIG. 2 is a front view of the ceiling surface of the combustion chamber of the internal combustion engine according to Embodiment 1.
- FIG. 1 is a block diagram of a plasma generation apparatus according to Embodiment 1.
- FIG. 3 is a diagram illustrating a waveform shape of a microwave pulse according to the first embodiment. It is a block diagram of the electromagnetic wave generator which concerns on the modification 1 of Embodiment 1.
- FIG. 5 is a longitudinal sectional view of a main part of an internal combustion engine according to Embodiment 2.
- Embodiment 1 is essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.
- the first embodiment is an internal combustion engine 10 according to the present invention.
- the internal combustion engine 10 is a reciprocating type internal combustion engine in which a piston 23 reciprocates.
- the internal combustion engine 10 includes an internal combustion engine body 11 and a plasma generation device 30.
- the combustion cycle in which the air-fuel mixture in the combustion chamber 20 is ignited by the plasma generated by the plasma generator 30 and the air-fuel mixture is combusted is repeatedly performed.
- the internal combustion engine main body 11 includes a cylinder block 21, a cylinder head 22, and a piston 23 as shown in FIG.
- a plurality of cylinders 24 having a circular cross section are formed in the cylinder block 21.
- a piston 23 is provided in each cylinder 24 so as to reciprocate.
- the piston 23 is connected to the crankshaft via a connecting rod (not shown).
- the crankshaft is rotatably supported by the cylinder block 21.
- the cylinder head 22 is placed on the cylinder block 21 with the gasket 18 in between.
- the cylinder head 22 forms a combustion chamber 20 having a circular cross section together with the cylinder 24 and the piston 23.
- the diameter of the combustion chamber 20 is, for example, about half of the wavelength of the microwave radiated from the radiation antenna 16 described later.
- each discharge electrode 15 constituting a part of the discharge device 12 is provided for each cylinder 24.
- Each discharge electrode 15 is provided at the tip of a cylindrical insulator 17 embedded in the cylinder head 22. As shown in FIG. 2, each discharge electrode 15 is located at the center of the ceiling surface 51 of the combustion chamber 20 (the surface exposed to the combustion chamber 20 in the cylinder head 22).
- An intake port 25 and an exhaust port 26 are formed in the cylinder head 22 for each cylinder 24.
- the intake port 25 is provided with an intake valve 27 that opens and closes an intake side opening 25a of the intake port 25, and an injector 29 that injects fuel.
- the exhaust port 26 is provided with an exhaust valve 28 for opening and closing the exhaust side opening 26 a of the exhaust port 26.
- the intake port 25 is designed so that a strong tumble flow is formed in the combustion chamber 20.
- the plasma generation apparatus 30 includes a discharge device 12 and an electromagnetic wave emission device 13.
- the discharge device 12 is provided for each combustion chamber 20.
- Each discharge device 12 includes an ignition coil 14 (high voltage generation device) that generates a high voltage pulse, and a discharge electrode 15 to which the high voltage pulse output from the ignition coil 14 is applied.
- the ignition coil 14 is connected to a DC power source (not shown). When the ignition coil 14 receives an ignition signal from the electronic control unit 35, the ignition coil 14 boosts the voltage applied from the DC power source and outputs the boosted high voltage pulse to the discharge electrode 15.
- the discharge electrode 15 is provided on the end surface of the insulator 17 extending from the ceiling surface 51 of the combustion chamber 20 to the outer surface of the cylinder head 22 in the cylinder head 22.
- An electric wire (not shown) that electrically connects the ignition coil 14 and the discharge electrode 15 passes through the insulator 17. Both the electric wire and the discharge electrode 15 are insulated from the cylinder head 22 by an insulator 17.
- a discharge gap is formed between the discharge electrode 15 and a radiation antenna 16 described later. When a high voltage pulse is supplied to the discharge electrode 15, a spark discharge occurs in the discharge gap.
- the electromagnetic wave radiation device 13 includes an electromagnetic wave generator 31, an electromagnetic wave switch 32, and a radiation antenna 16.
- the electromagnetic wave generation device 31 and the electromagnetic wave switch 32 are provided one by one, and the radiation antenna 16 is provided for each combustion chamber 20.
- the electromagnetic wave generator 31 outputs a microwave pulse when receiving an electromagnetic wave drive signal from the electronic control unit 35.
- the electromagnetic wave generator 31 includes an electromagnetic wave oscillator 41 that generates a microwave pulse, and an amplifier 42 that amplifies the microwave pulse generated by the electromagnetic wave oscillator 41.
- the electromagnetic wave oscillator 41 is a dielectric oscillator.
- the electromagnetic wave oscillator 41 may be another oscillator such as a crystal oscillator.
- the amplifier 42 amplifies the microwave pulse input from the electromagnetic wave oscillator 41 in an amplifier circuit provided with a solid-state amplification element (for example, a bipolar transistor).
- the amplifier circuit performs class C amplification.
- An amplifier circuit that performs class B amplification may be used.
- the output gradually decreases due to a temperature rise after the start of amplification. That is, the output peak appears on the rising edge.
- gain adjustment control is performed using an AGC circuit (Automatic Gain Control) to suppress output fluctuation.
- the electromagnetic wave generator 31 outputs the microwave pulse having the waveform as shown in FIG. 4 to the radiation antenna 16 without reducing the rising peak of the output waveform. To do.
- the electromagnetic wave generator 31 is not provided with means (for example, an AGC circuit) for reducing the rising peak in the output waveform of the amplifier 42 in the transmission line from the amplifier 42 to the radiation antenna 16.
- the electromagnetic wave switch 32 includes one input terminal and a plurality of output terminals provided for each radiation antenna 16.
- the input terminal is connected to the electromagnetic wave generator 31.
- Each output terminal is connected to a corresponding radiation antenna 16.
- the electromagnetic wave switch 32 is controlled by the electronic control device 35 and sequentially switches the supply destination of the microwaves output from the electromagnetic wave generation device 31 among the plurality of radiation antennas 16.
- the radiation antenna 16 is formed in an annular shape and is provided so as to surround the discharge electrode 15 on the ceiling surface 51 of the combustion chamber 20.
- the discharge electrode 15 and the radiation antenna 16 are disposed concentrically.
- the radiation antenna 16 is provided on a ring-shaped insulating layer 19 formed on the ceiling surface 51 of the combustion chamber 20.
- the radiation antenna 16 is electrically connected to the output terminal of the electromagnetic wave switch 32 via a coaxial line 33 embedded in the cylinder head 22.
- the radiating antenna 16 may be formed in a C shape.
- the distance between the discharge electrode 15 and the radiation antenna 16 is set such that dielectric breakdown occurs with respect to the high voltage pulse output from the ignition coil 14.
- the distance between the discharge electrode 15 and the radiation antenna 16 is, for example, 2 to 3 mm.
- the radiating antenna 16 serves as a ground electrode for the spark plug.
- the plasma generator 30 generates a discharge plasma in the discharge gap by outputting a high voltage pulse from the ignition coil 14 and radiates a microwave pulse from the radiation antenna 16 by outputting a microwave pulse from the electromagnetic wave generator 31. Then, the discharge plasma is expanded to generate a relatively large microwave plasma.
- the plasma generation operation of the plasma generation apparatus 30 will be described.
- the internal combustion engine 10 performs an ignition operation in which the air-fuel mixture is ignited by the microwave plasma generated by the plasma generator 30 at the ignition timing where the piston 23 is positioned before the compression top dead center.
- the electronic control device 35 outputs an ignition signal and an electromagnetic wave drive signal at the same time. Then, a high voltage pulse is output from the ignition coil 14 that has received the ignition signal, and a high voltage pulse is applied to the discharge electrode 15. As a result, spark discharge occurs in the discharge gap between the discharge electrode 15 and the radiation antenna 16.
- the electromagnetic wave generator 31 that has received the electromagnetic wave drive signal outputs a microwave pulse.
- the electromagnetic wave emission device 13 starts outputting the microwave pulse at the output timing of the high voltage pulse of the ignition coil 14.
- a microwave pulse is output from the radiation antenna 16.
- the discharge plasma generated by the spark discharge absorbs and expands the microwave energy, and the mixture is ignited by the expanded microwave plasma.
- the flame spreads outward from the ignition position where the air-fuel mixture is ignited toward the wall surface of the cylinder 24.
- the electronic control device 35 outputs an electromagnetic wave drive signal immediately after the air-fuel mixture is ignited. Then, the electromagnetic wave generator 31 outputs a microwave pulse. A microwave pulse is output from the radiation antenna 16.
- the microwave pulse is radiated before the flame front passes the position of the radiating antenna 16.
- a strong electric field region is formed by microwaves.
- the moving speed of the flame surface increases by receiving microwave energy when the flame surface passes through the strong electric field region.
- microwave energy is large, microwave plasma is generated in the strong electric field region before the flame surface passes.
- active species for example, OH radicals
- the moving speed of the flame surface passing through the strong electric field region is increased by the active species.
- the microwave pulse is transmitted to the radiation antenna 16 without reducing the rising peak of the output waveform of the amplification element. Output. Therefore, since only the output during the peak period of the oscillation period of the microwave pulse needs to be equal to or higher than the energy required for the expansion (breakdown) of the discharge plasma, the average output of the electromagnetic wave generator 31 can be reduced. Therefore, the heat generation amount of the amplification element can be reduced, and the electromagnetic wave generator 31 can be downsized.
- the electromagnetic wave generator 31 can be reduced in size with little influence on the internal combustion engine body 11.
- microwave plasma is generated under high pressure during the compression stroke, so that a microwave with high power is required for breakdown compared to the case of using plasma in the manufacturing process.
- the electromagnetic wave generator 31 can be downsized in the internal combustion engine 10 that requires the large electromagnetic wave generator 31.
- the electromagnetic wave generator 31 includes a gain controller 43.
- the gain control unit 43 constitutes a peak increasing means for increasing the output of the amplifier 42 during a peak period (a period from the rising edge to the falling edge) of the microwave pulse oscillation period.
- the gain controller 43 increases the gain factor of the amplifier circuit only during the peak period of the microwave pulse oscillation period.
- the gain control unit 43 changes the gain factor of the amplification circuit by applying a gain control voltage to the gate of the amplification element (for example, a dual gate FET).
- the gain control unit 43 increases the gain factor of the amplifier circuit by applying a gain control voltage so that the gate voltage value of the FET becomes the source voltage value (for example, ground potential) only during the peak period.
- the electronic control unit 35 outputs an amplification start signal to the gain control unit 43 simultaneously with the electromagnetic wave drive signal that defines the oscillation period of the microwave pulse. Then, the gain control unit 43 receives the amplification start signal from the electronic control unit 35 and starts increasing the gain factor of the amplifier circuit. In the amplifier 42, amplification of the microwave pulse input from the electromagnetic wave oscillator 41 is started. For example, when the gain control unit 43 detects the voltage value on the output side of the amplifier 42 and detects the falling edge of the peak of the microwave pulse, the gain control unit 43 finishes increasing the gain factor of the amplifier circuit. The amplifier 42 ends the amplification of the microwave pulse at the end timing of the peak period.
- the output of the electromagnetic wave generator 31 during the peak period of the oscillation period of the microwave pulse increases. Therefore, breakdown can surely occur and microwave plasma can be generated stably.
- the gain control unit 43 may reduce the gain factor after the peak period by deeply biasing the gain control voltage in the negative voltage direction after the peak period in the oscillation period of the microwave pulse.
- the gain factor in this case is set to a level at which microwave plasma can be maintained.
- the discharge device 12 in addition to the ignition coil 14, includes a spark plug 40 in which a center electrode 40a (corresponding to the discharge electrode of the first embodiment) and a ground electrode 40b are provided at the tip. .
- the spark plug 40 is provided on the ceiling surface 51 of the combustion chamber 20.
- a high voltage pulse is supplied from the ignition coil 14 to the center electrode 40 a of the spark plug 40.
- a negative voltage is applied as the high voltage pulse.
- the electromagnetic wave radiation device 13 includes an electromagnetic wave generator 31, an electromagnetic wave switch 32, and a radiation antenna 16.
- the radiation antenna 16 is provided on the ceiling surface 51 of the combustion chamber 20.
- the radiation antenna 16 is formed in an annular shape in a front view of the ceiling surface 51 of the combustion chamber 20 and surrounds the tip of the spark plug 40.
- the radiating antenna 16 may be formed in a C shape in a front view of the ceiling surface 51 of the combustion chamber 20.
- the radiation antenna 16 is laminated on an annular insulating layer 19 formed around the mounting hole of the spark plug 40 in the ceiling surface 51 of the combustion chamber 20.
- the insulating layer 19 is formed, for example, by spraying an insulator by thermal spraying.
- the radiating antenna 16 is electrically insulated from the cylinder head 22 by the insulating layer 19.
- a receiving antenna 52 is provided on the top surface of the piston 23.
- the receiving antenna 52 is formed in a ring shape, and is provided at a position near the outer periphery of the top surface of the piston 23.
- the receiving antenna 52 is electrically insulated from the piston 23 by an insulating layer (not shown), and is provided in an electrically floating state.
- the microwave is radiated from the radiation antenna 16 during the propagation of the flame after the mixture is ignited. Then, a strong electric field region is formed in the vicinity of the receiving antenna 52 by the microwave.
- the moving speed of the flame surface increases by receiving microwave energy when the flame surface passes through the strong electric field region.
- microwave energy is large, microwave plasma is generated in the strong electric field region before the flame surface passes. Since active species (for example, OH radicals) are generated in the generation region of the microwave plasma, the moving speed of the flame surface passing through the strong electric field region is increased by the active species.
- the embodiment may be configured as follows.
- the casing (package) of the electromagnetic wave generating device 31 is made of ceramic and the microwave transmission line insulator is made of ceramic
- the casing and the transmission line insulator may be integrated.
- the connector can be omitted on the output side of the electromagnetic wave generator 31.
- the reflected wave of the microwave is monitored, and the oscillation frequency (wavelength) of the microwave output from the electromagnetic wave generator 31 is reduced so that the reflected wave of the microwave becomes small. ) May be changed.
- the radiating antenna 16 and the receiving antenna 52 may be covered with an insulator or a dielectric.
- the plasma generating device 30 generates the electromagnetic wave plasma by expanding the discharge plasma by the electromagnetic wave.
- the electromagnetic wave plasma may be generated only by the electromagnetic wave.
- the plasma generator 30 may generate microwave plasma in the combustion chamber 20 during the intake stroke.
- the plasma generation device 30 may be applied to a material analysis device.
- the substance analyzer is an apparatus for identifying a substance by the SIBS method (Spark-Induced Breakdown Spectroscopy).
- the substance analyzer generates discharge plasma by spark discharge in the vicinity of the surface of a substance to be analyzed (for example, metal), and expands the discharge plasma by microwaves. As a result, microwave plasma is generated, and the substance to be analyzed is turned into plasma.
- the material analyzing apparatus spectrally analyzes light emission of the analysis target material that has been turned into plasma.
- the substance analyzer detects a frequency at which a peak appears in the emission spectrum, and identifies the substance based on the frequency.
- the substance analysis apparatus may be an apparatus for identifying a substance by the LIBS method (Laser-Induced Breakdown Spectroscopy). In that case, instead of spark discharge, the plasma generated by condensing the laser is expanded by microwaves.
- the present invention is useful for a plasma generator that generates electromagnetic plasma and an internal combustion engine that promotes combustion of an air-fuel mixture using electromagnetic waves.
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Abstract
Description
《実施形態1》
-内燃機関本体-
-プラズマ生成装置-
-プラズマ生成動作-
-実施形態1の効果-
-実施形態1の変形例1-
-実施形態1の変形例2-
-実施形態2-
-その他の実施形態-
11 内燃機関本体
12 点火装置
13 電磁波放射装置
15 放電電極
16 放射アンテナ
20 燃焼室
30 プラズマ生成装置
31 電磁波発生装置
41 電磁波発振器
42 増幅器
43 出力制御部(ピーク増大手段)
Claims (4)
- ソリッドステート化された増幅素子を用いて増幅した電磁波を出力する電磁波発生装置と、
前記電磁波発生装置から出力された電磁波を対象空間へ放射するための放射アンテナとを備え、
前記放射アンテナから前記対象空間へ電磁波を放射して電磁波プラズマを生成するプラズマ生成装置であって、
前記電磁波発生装置は、その出力波形の立ち上りにピークが現れる特性を有し、その出力波形の立ち上がりのピークを低減させることなく電磁波を前記放射アンテナへ出力する
ことを特徴とするプラズマ生成装置。 - 請求項1において、
前記ピークの期間における前記電磁波発生装置の出力を増大させるピーク増大手段を備えている
ことを特徴とするプラズマ生成装置。 - 請求項1又は請求項2に記載のプラズマ生成装置と、
燃焼室が形成された内燃機関本体とを備え、
前記プラズマ生成装置は、前記燃焼室を前記対象空間として電磁波プラズマを生成する
ことを特徴とする内燃機関。 - 燃焼室が形成された内燃機関本体と、
ソリッドステート化された増幅素子を用いて増幅した電磁波を出力する電磁波発生装置と、
前記電磁波発生装置から出力された電磁波を前記燃焼室へ放射するための放射アンテナとを備え、
前記放射アンテナから前記燃焼室へ電磁波を放射することにより混合気の燃焼を促進させる内燃機関であって、
前記電磁波発生装置は、その出力波形の立ち上りにピークが現れる特性を有し、その出力波形の立ち上がりのピークを低減させることなく電磁波を前記放射アンテナへ出力する
ことを特徴とする内燃機関。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12814802.0A EP2733347A4 (en) | 2011-07-16 | 2012-07-13 | PLASMA GENERATING DEVICE AND INTERNAL COMBUSTION ENGINE |
JP2013524714A JP6082879B2 (ja) | 2011-07-16 | 2012-07-13 | プラズマ生成装置、及び内燃機関 |
US14/233,067 US9909552B2 (en) | 2011-07-16 | 2012-07-13 | Plasma generating device, and internal combustion engine |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-157285 | 2011-07-16 | ||
JP2011157285 | 2011-07-16 | ||
JP2011184066 | 2011-08-25 | ||
JP2011-184066 | 2011-08-25 |
Publications (1)
Publication Number | Publication Date |
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WO2013011968A1 true WO2013011968A1 (ja) | 2013-01-24 |
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PCT/JP2012/068011 WO2013011968A1 (ja) | 2011-07-16 | 2012-07-13 | プラズマ生成装置、及び内燃機関 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9909552B2 (ja) |
EP (1) | EP2733347A4 (ja) |
JP (1) | JP6082879B2 (ja) |
WO (1) | WO2013011968A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015119162A3 (ja) * | 2014-02-04 | 2015-10-08 | イマジニアリング株式会社 | 点火装置 |
WO2018203511A1 (ja) * | 2017-05-02 | 2018-11-08 | 国立研究開発法人産業技術総合研究所 | エンジンの着火および燃焼促進技術 |
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JP6082881B2 (ja) * | 2013-08-21 | 2017-02-22 | イマジニアリング株式会社 | 内燃機関の点火装置及び内燃機関 |
US20170328337A1 (en) * | 2014-11-24 | 2017-11-16 | Imagineering, Inc. | Ignition unit, ignition system, and internal combustion engine |
EP3064765A1 (de) * | 2015-03-03 | 2016-09-07 | MWI Micro Wave Ignition AG | Verbrennungsmotor |
JP6614401B1 (ja) * | 2018-07-24 | 2019-12-04 | 株式会社村田製作所 | 無線通信デバイス |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03264772A (ja) * | 1989-11-21 | 1991-11-26 | Cummins Engine Co Inc | プラズマ電流の流通用の高導電性チャンネルを生成する方法及び装置 |
JP2006525111A (ja) * | 2003-04-30 | 2006-11-09 | ザ ビーオーシー グループ ピーエルシー | プラズマを形成するための装置および方法 |
JP2010001827A (ja) | 2008-06-20 | 2010-01-07 | Mitsubishi Electric Corp | 内燃機関用点火装置 |
JP2011134636A (ja) * | 2009-12-25 | 2011-07-07 | Denso Corp | 高周波プラズマ点火装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57113968A (en) * | 1981-01-07 | 1982-07-15 | Hitachi Ltd | Microwave plasma ignition type engine |
EP0395415B1 (en) * | 1989-04-27 | 1995-03-15 | Fujitsu Limited | Apparatus for and method of processing a semiconductor device using microwave-generated plasma |
EP1444434B1 (de) * | 2001-11-16 | 2006-11-29 | Bayerische Motoren Werke Aktiengesellschaft | Zündsystem und verfahren für eine brennkraftmaschine mit mikrowellen-quellen |
US20040245085A1 (en) * | 2002-03-13 | 2004-12-09 | Gopalakrishnan Srinivasan | Process and synthesizer for molecular engineering and synthesis of materials |
US6883509B2 (en) * | 2002-11-01 | 2005-04-26 | Visteon Global Technologies, Inc. | Ignition coil with integrated coil driver and ionization detection circuitry |
TW200845833A (en) * | 2007-05-01 | 2008-11-16 | Delta Electronics Inc | Plasma generating device |
JP5119855B2 (ja) * | 2007-10-23 | 2013-01-16 | 日産自動車株式会社 | エンジンの点火装置 |
CN104174049B (zh) * | 2007-11-06 | 2017-03-01 | 克里奥医药有限公司 | 可调施放器组件以及等离子体灭菌设备 |
JPWO2009110366A1 (ja) * | 2008-03-07 | 2011-07-14 | 東京エレクトロン株式会社 | プラズマ処理装置 |
JP2013231355A (ja) * | 2010-03-26 | 2013-11-14 | Hiromitsu Ando | 着火制御装置 |
-
2012
- 2012-07-13 US US14/233,067 patent/US9909552B2/en not_active Expired - Fee Related
- 2012-07-13 JP JP2013524714A patent/JP6082879B2/ja active Active
- 2012-07-13 EP EP12814802.0A patent/EP2733347A4/en not_active Withdrawn
- 2012-07-13 WO PCT/JP2012/068011 patent/WO2013011968A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03264772A (ja) * | 1989-11-21 | 1991-11-26 | Cummins Engine Co Inc | プラズマ電流の流通用の高導電性チャンネルを生成する方法及び装置 |
JP2006525111A (ja) * | 2003-04-30 | 2006-11-09 | ザ ビーオーシー グループ ピーエルシー | プラズマを形成するための装置および方法 |
JP2010001827A (ja) | 2008-06-20 | 2010-01-07 | Mitsubishi Electric Corp | 内燃機関用点火装置 |
JP2011134636A (ja) * | 2009-12-25 | 2011-07-07 | Denso Corp | 高周波プラズマ点火装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2733347A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015119162A3 (ja) * | 2014-02-04 | 2015-10-08 | イマジニアリング株式会社 | 点火装置 |
JPWO2015119162A1 (ja) * | 2014-02-04 | 2017-03-30 | イマジニアリング株式会社 | 点火装置 |
WO2018203511A1 (ja) * | 2017-05-02 | 2018-11-08 | 国立研究開発法人産業技術総合研究所 | エンジンの着火および燃焼促進技術 |
Also Published As
Publication number | Publication date |
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US20140202411A1 (en) | 2014-07-24 |
JP6082879B2 (ja) | 2017-02-22 |
EP2733347A4 (en) | 2015-02-25 |
US9909552B2 (en) | 2018-03-06 |
JPWO2013011968A1 (ja) | 2015-02-23 |
EP2733347A1 (en) | 2014-05-21 |
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