KR101687792B1 - High-frequency ignition system for gasoline engines applying magnetron - Google Patents

High-frequency ignition system for gasoline engines applying magnetron Download PDF

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Publication number
KR101687792B1
KR101687792B1 KR1020150106248A KR20150106248A KR101687792B1 KR 101687792 B1 KR101687792 B1 KR 101687792B1 KR 1020150106248 A KR1020150106248 A KR 1020150106248A KR 20150106248 A KR20150106248 A KR 20150106248A KR 101687792 B1 KR101687792 B1 KR 101687792B1
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KR
South Korea
Prior art keywords
magnetron
transformer
ignition system
power
microwave
Prior art date
Application number
KR1020150106248A
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Korean (ko)
Inventor
최두석
최문석
김권세
김홍주
Original Assignee
공주대학교 산학협력단
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Priority to KR1020150106248A priority Critical patent/KR101687792B1/en
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Publication of KR101687792B1 publication Critical patent/KR101687792B1/en

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/38—Arrangements for igniting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P1/06—Arrangements for cooling other engine or machine parts
    • F01P1/10—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/50—Sparking plugs having means for ionisation of gap
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/28—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a plasma reactor

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency ignition system for a gasoline engine in which a microwave is generated using a power source of a battery and a microwave is ignited in the form of a plasma spark through a plug to apply a magnetron applicable to a system operated by combustion of fuel .
The high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied includes a battery 100, a converter 200 for converting a DC power applied from the battery 100 to an AC power source, A magnetron 500 for generating a microwave from a power source applied from the transformer 400 and a magnetron 500 for applying the microwave signal to the transformer 400. [ And a plug 600 for generating a plasma spark. When the present invention is applied to an internal combustion engine, since the injected fuel in the cylinder provided in the internal combustion engine is combusted by using the plasma spark, And the generation of soot such as nitrogen oxides can be reduced.

Description

TECHNICAL FIELD [0001] The present invention relates to a high-frequency ignition system for a gasoline engine using a magnetron,

The present invention relates to an ignition system, and more particularly, to an ignition system for generating a microwave using a power source of a battery and igniting the microwave in the form of a plasma spark through a plug and using a magnetron used in various combustion systems Frequency ignition system.

Generally, a microwave is a term that refers to all radio waves having a wavelength ranging from 1 mm to 1 m. Because of its short wavelength, it has almost the same properties as light, has strong sterilizing power, absorbs well in plants and water, and generates heat. It is a microwave oven to which this characteristic is applied. A microwave is a cooking appliance that uses microwaves to heat food, and uses a magnetron to change the direction of the electric field at high speed, heating the food with electromagnetic waves whose electric field changes direction about 2,450 million times a second.
Microwaves have been applied to microwave ovens mainly in daily life, but recently, a technique of generating microwave sparks has been proposed as a countermeasure of a technique of heating food with microwave electromagnetic waves. When a microwave is generated and supplied to a spark plug, a spark is generated, and techniques for using it as an ignition device are being developed.
On the other hand, an internal combustion engine is a typical facility in which the role of the ignition device is very important. BACKGROUND ART Currently, an ignition device for burning fuel in an engine cylinder inside an internal combustion engine uses a method using electric ignition. Generally, current electric ignition system is a principle that induces a voltage of a vehicle battery from an ignition coil to a high voltage and transfers it to a spark plug to generate an electric spark.
Thus, when the fuel is burned using the conventional ignition plug, there is a problem that the combustion is inefficient and incomplete. Incomplete combustion of fuel generates soot such as nitrogen oxides and is a main cause of environmental pollution. It is a problem that leads to reduction of fuel consumption due to waste of fuel and deterioration of output of internal combustion engine.
Conventional related arts have disclosed a 'switching power supply device for a high-frequency heating device' of Korean Patent Publication No. 2000-0075716 and a 'ignition device for an engine' of Korean Patent Publication No. 2005-0004424.
However, in the conventional technology, knocking phenomenon frequently occurs due to the point ignition method, and problems such as reduction of the output and fuel consumption due to reduction of the flammability limit in the lean region of the fuel occur, and development of a new technique It is true.

Korean Unexamined Patent Publication No. 2000-0075716 Switching power supply device for high frequency heating device (December 24, 2000) Korea Patent Publication No. 2005-0004424 Engine ignition device (2005.01.12)

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above problems, and it is an object of the present invention to increase the flame propagation speed by microwave energy propagation and to improve the point ignition by volume ignition, A high-frequency ignition system for a gasoline engine to which a magnetron can be applied.

A high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied is provided with a battery 100 and a battery 100, A power supply 300 connected to the converter 200 and the converter 200 and a transformer 400 connected to the power supply 300 for boosting the power supplied from the power supply 300, A magnetron 500 coupled to the transformer 400 to generate a microwave from a power source applied from the transformer 400 and a magnetron 500 coupled to the magnetron 500 to generate a plasma spark And a plug (600).
The high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied includes a kit box 800 that forms a space therein. The kit box 800 includes a power supply 300 and a transformer 400 and a magnetron 500 as shown in FIG.
The high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied is characterized in that an electromagnetic wave shielding cover 820 surrounding the outer circumferential surface of the kit box 800 is provided.
The high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied is characterized in that an electromagnetic wave shielding member 520 surrounding the outer surface of the magnetron 500 is provided.
The high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied includes a capacitor 700 that receives power from the power supply device 300 and replenishes the insufficient power of the transformer 400 do.
The high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied includes a cooling fan 510 for preventing the magnetron 500 from overheating.
The magnetron 500 and the plug 600 of the high-frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied are connected by a coaxial cable.
Further, the high-frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied is characterized in that it is used as an ignition means for burning in-cylinder fuel of an internal combustion engine.
The high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied is characterized by being used as an ignition means for burning contaminants in the exhaust gas discharged from an exhaust apparatus of an automobile.

The high frequency spark ignition system for a gasoline engine employing the magnetron according to the present invention including the above features can generate plasma spark with a simple structure and can be applied to various fields and can be used in various fields. Since the high frequency of 2.54 Hz is used, It is effective to lower the misfire.
In addition, the high frequency ignition system for a gasoline engine employing the magnetron according to the present invention burns fuel injected in an engine cylinder by using a plasma spark, so that the fuel is completely burned to increase stability and generate soot such as nitrogen oxides .
In the high frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied, the existing point ignition is improved by volume ignition, so that the knocking phenomenon is reduced and the fuel consumption is improved due to the increase of the ignition limit even in the lean region of the fuel.

1 is a schematic view of a high-frequency ignition system for a gasoline engine to which a magnetron according to the present invention is applied,
2 is a configuration diagram of a high-frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied.

Hereinafter, the present invention will be described more specifically with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to:

FIG. 1 is a schematic view of a high-frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied, and FIG. 2 is a configuration diagram of a high-frequency ignition system for a gasoline engine to which the magnetron according to the present invention is applied.

1 is a schematic view of a high-frequency ignition system 1000 for a gasoline engine to which a magnetron according to the present invention is applied, as a representative drawing of the present invention. Referring to FIG. 1, a high-frequency ignition system 1000 for a gasoline engine to which a magnetron according to the present invention is applied includes a battery 100, a converter 200 for converting DC power applied from the battery 100 to AC power, A transformer 400 for boosting the power supplied from the power supply 300 and a magnetron 500 for generating a microwave from a power source applied from the transformer 400. [ And a plug 600 receiving the microwave signal to generate a plasma spark.
The configuration of each of the high-frequency ignition system 1000 for a gasoline engine to which the magnetron according to the present invention is applied will be described in more detail. The battery 100 uses a generally used battery 100, ) Is used.
In order to generate a microwave using the DC power source, the power output from the battery 100 should be converted into an AC power source. At this time, the converter 200 is used to convert the DC power of 12V output from the battery 100 into AC power. The converter 200 converts a DC power source of 12 V applied from the battery 100 into an AC power source. At this time, the DC power source of 12 V is converted into an AC power source of 220 V having a frequency of 60 Hz.
The 220 V AC power converted and output from the converter 200 is applied to the power supply 300 connected to the converter 200.
The power supply unit 300 distributes the supplied power to the transformer 400 and the capacitor 700.
The transformer 400 promotes the power supplied from the power supply 300 to a power required to generate microwaves in the magnetron 500. At this time, Promote the power to 600V or more.
The capacitor 700 is an electric component for temporarily storing a large amount of electric charge in a conductor. The capacitor 700 is a capacitor for obtaining capacitance. The capacitor 700 is supplied with power from the power supply 300 to store a current. Supplement power.
A power source of 600 V or more is applied to the magnetron 500 through the transformer 400. The magnetron 500 is a vacuum tube for oscillating a microwave, and is a special vacuum tube for controlling the flow of electrons by applying a magnetic field. The magnetron 500 is a device used to output a high-power pulse having a cylindrical anode and a cathode at its central axis . The magnetron is mainly used in a microwave oven requiring a microwave with high power.
When a low frequency power is applied to the magnetron 500, a high frequency output can be obtained and a power having a frequency of 60 Hz applied from the transformer 400 is amplified by a microwave of 2.54 GHz and output.
Microwaves generated in the magnetron 500 are applied to the plug 600 connected to the magnetron 500. When the plug 600 is connected to the ground while the microwave signal is applied to the plug 600, a microwave generates a plasma spark.
Currently, an ignition system that is commercially used is a system that induces a voltage of a battery from an ignition coil to a high voltage and applies it to a spark plug to generate an electric spark, which is generated by a high-frequency ignition system 1000 for a gasoline engine using the magnetron according to the present invention The plasma spark increases the flame propagation speed as compared with the spark ignition system, and the point ignition is improved by the volume ignition.
The high-frequency ignition system 1000 for a gasoline engine to which the magnetron according to the present invention is applied is applicable to all fields requiring an ignition system. In particular, ignition means for burning in-cylinder fuel of an internal combustion engine and exhaust means The exhaust gas can be used as an ignition means for burning contaminants in the exhaust gas.
Generally, an ignition system of an internal combustion engine is a principle in which a voltage generated in a power source is led from an ignition coil to a high voltage and is transmitted to an ignition plug to generate an electric flame. Such an electric spark is difficult to ignite inside the cylinder due to such factors as high compression ratio, air flow enhancement, and lean air-fuel ratio. In addition, incomplete combustion occurs due to the characteristics of an engine that is combusted by spark ignition, soot such as nitrogen oxides is generated, fuel consumption is reduced, and output problems may occur.
When the high-frequency ignition system 1000 for a gasoline engine, to which the magnetron according to the present invention is applied, is applied to the engine cylinder of the internal combustion engine, the existing point ignition system is improved to a volume ignition system, The knocking phenomenon can be reduced. In addition, there is an effect of improving the fuel efficiency by increasing the flammability limit in the lean region, and by using the high frequency of 2.54 GHz, the responsiveness is improved and the misfire can be lowered.

Next, FIG. 2 is a diagram showing a configuration of a high-frequency ignition system 1000 for a gasoline engine to which the magnetron according to the present invention is applied. Referring to FIG. 2, a part of a component for generating a microwave may be built in the kit box 800. The kit box 800 includes the power supply 300, the transformer 400, the capacitor 700, and the magnetron 500.
At this time, when power is applied to the kit box 800 from the external battery 100 and the converter 200, microwaves are finally generated in the magnetron 500 inside the kit box 800, And can be connected to a plug 600 provided outside the kit box 800 to generate a plasma spark.
It is preferable that a cooling fan 510 for cooling the magnetron 500 is installed in the kit box 800 in order to prevent the magnetron 500 from being overheated and damaged during a long time operation.
The high-frequency ignition system 1000 for a gasoline engine to which the magnetron generating a plasma spark is applied can be used as an ignition system of an internal combustion engine. The high-frequency ignition system 1000 for a gasoline engine to which the magnetron is applied can be applied to an internal combustion engine, particularly an engine cylinder of an automobile, and a high-frequency ignition system 1000 for a gasoline engine in which a magnetron is applied to an engine room of an automobile use.
At this time, if the configuration of each of the high-frequency ignition system 1000 for a gasoline engine to which the magnetron is applied is separately provided in the engine room, there may arise a problem that the engine room becomes congested and complicated due to the wirings connected to the respective components. The power supply 300, the transformer 400, the capacitor 700, and the magnetron 500 may be arranged in the engine room 800 in a well-organized manner. The battery 100, the converter 200, and the plug 600 are not included in the kit box 800 because they are already installed in the vehicle.
On the other hand, an electromagnetic wave shielding cover 810 is provided on the outer circumferential surface of the kit box 800. BACKGROUND ART [0002] In recent automobiles, most devices such as a brake lock device (ABS), a vehicle body control device (VDC), and an apparatus for controlling electronic devices such as an engine and a transmission of an automobile are electronized and operated by electronic signals. In such a situation, the present invention for generating a microwave at a high frequency may cause a malfunction due to electrical interference to the above-mentioned electronic devices. On the contrary, if the electronic device of the vehicle interferes with the high-frequency ignition system 1000 for a gasoline engine to which the magnetron according to the present invention is applied, it may cause problems in ignition of the engine, which is a key element of the automobile, and can not exhibit its performance.
By providing the electromagnetic shielding cover 810 in the kit box 800, it is possible to reduce the interference between the high-frequency ignition system 1000 for a gasoline engine and the various electronic devices of the automobile to which the magnetron according to the present invention is applied, Thereby reducing the problems that may occur.
In addition, the magnetron 500, which is a core device for generating microwaves, is provided with an electromagnetic wave shielding member 520 surrounding the magnetron 500. The electromagnetic wave shielding member 520 shields the electromagnetic wave to minimize the electromagnetic interference problem. have.
At this time, the electromagnetic wave shielding cover 820 and the electromagnetic wave shielding member 520 are formed by coating a conductor formed in a meandering shape on the surface of a rigid synthetic resin film. When the electromagnetic wave shielding cover 820 and the electromagnetic wave shielding member 520 are surrounded by the magnetron 500 and the kit box 800, the surface coated with the conductor of the film is positioned inward, And it is preferable that a gap is not formed. In addition, the electromagnetic wave shielding cover 820 and the electromagnetic wave shielding member 520 may include a plurality of layers to increase the shielding performance.
At this time, the film may be formed of any one of acrylic, PET, and polycarbonate, and the conductive material may be formed of any one of gold, silver, copper, and aluminum.
Meanwhile, when the microwave generated in the magnetron 500 is connected to the plug 600, since the cable is exposed to the outside of the kit box 800, a coaxial cable is used so that the electromagnetic wave generated in the cable does not cause a problem And is connected to the plug (600).

The present embodiments are provided by way of example only and do not limit the scope of the present invention. The present invention is not limited to the above embodiments and various modifications may be made without departing from the scope of the present invention as claimed in the claims.

1000 High-frequency ignition system for gasoline engine employing the magnetron according to the present invention
100 battery
200 converter
300 power supply
400 transformer
500 Magnetron 510 cooling fan
520 Electromagnetic wave shielding member
600 plug
700 Capacitors
800 Kit Box 810 electromagnetic shielding cover

Claims (9)

A battery 100 supplying DC power of 12V;
A converter 200 for converting a DC power source of 12 V applied from the battery 100 into an AC power source of 220 V having a frequency of 60 Hz;
A power supply 300 connected to the converter 200;
A transformer (400) connected to the power supply unit (300) and boosting the power applied from the power supply unit (300);
A capacitor 700 connected between the power supply unit 300 and the transformer 400 and temporarily storing the current supplied from the power supply unit 300 to supplement the insufficient power of the transformer 400;
A magnetron 500 connected to the transformer 400 and generating a microwave from a power source applied from the transformer 400; And
And the other end of the transformer 400 is connected to the ground of the transformer 400 so that the microwave signal generated by the magnetron 500 is applied to the plug 600, And a plug (600) generating a plasma spark when connected to ground,
The power supply 300, the transformer 400, the capacitor 700 and the magnetron 500 are accommodated in a kit box 800 having a predetermined space therein,
An electromagnetic wave shielding cover 520 is provided on the outer surface of the magnetron 500 and an electromagnetic wave shielding cover 820 coated on the surface of the rigid synthetic resin film on the outer surface of the kit box 800, Shielding electromagnetic waves,
The magnetron 500 housed in the kit box 800 and the plug 600 located outside the kit box 800 are connected by a coaxial cable,
Wherein a cooling fan (510) for preventing the magnetron (500) from being overheated is disposed in the kit box (800). The high frequency ignition system for a gasoline engine (1000) delete delete delete delete delete delete delete delete
KR1020150106248A 2015-07-28 2015-07-28 High-frequency ignition system for gasoline engines applying magnetron KR101687792B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020515754A (en) * 2017-03-27 2020-05-28 ブイ． モンロス，サージ Programmable plasma spark plug
KR102228050B1 (en) 2020-03-30 2021-03-12 정종석 Dual spark plug system for outboard engine
KR20220077593A (en) * 2020-12-02 2022-06-09 김재우 Ignition apparatus and method of polar energetic materials based on microwave energy source

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000075716A (en) 1997-02-25 2000-12-26 모리시타 요이찌 High frequency heating equipment
JP2001123928A (en) * 1999-10-28 2001-05-08 Sumitomo Wiring Syst Ltd Ignition device for internal combustion engine
KR20050004424A (en) 2003-07-02 2005-01-12 현대자동차주식회사 ignition system for an engine
KR20080054395A (en) * 2005-09-09 2008-06-17 비티유 인터내셔날, 인코포레이티드 Microwave combustion system for internal combustion engines
JP2011094532A (en) * 2009-10-29 2011-05-12 Mitsubishi Electric Corp Plasma ignition device for internal combustion engine
JP2013096289A (en) * 2011-10-31 2013-05-20 Daihatsu Motor Co Ltd Spark ignition type internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000075716A (en) 1997-02-25 2000-12-26 모리시타 요이찌 High frequency heating equipment
JP2001123928A (en) * 1999-10-28 2001-05-08 Sumitomo Wiring Syst Ltd Ignition device for internal combustion engine
KR20050004424A (en) 2003-07-02 2005-01-12 현대자동차주식회사 ignition system for an engine
KR20080054395A (en) * 2005-09-09 2008-06-17 비티유 인터내셔날, 인코포레이티드 Microwave combustion system for internal combustion engines
JP2011094532A (en) * 2009-10-29 2011-05-12 Mitsubishi Electric Corp Plasma ignition device for internal combustion engine
JP2013096289A (en) * 2011-10-31 2013-05-20 Daihatsu Motor Co Ltd Spark ignition type internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020515754A (en) * 2017-03-27 2020-05-28 ブイ． モンロス，サージ Programmable plasma spark plug
KR102228050B1 (en) 2020-03-30 2021-03-12 정종석 Dual spark plug system for outboard engine
KR20220077593A (en) * 2020-12-02 2022-06-09 김재우 Ignition apparatus and method of polar energetic materials based on microwave energy source
KR102512056B1 (en) * 2020-12-02 2023-03-24 이성문 Ignition apparatus and method of polar energetic materials based on microwave energy source

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