CN106762331B - A kind of microwave-assisted plug ignition method and its integrating device - Google Patents
A kind of microwave-assisted plug ignition method and its integrating device Download PDFInfo
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- CN106762331B CN106762331B CN201611163589.2A CN201611163589A CN106762331B CN 106762331 B CN106762331 B CN 106762331B CN 201611163589 A CN201611163589 A CN 201611163589A CN 106762331 B CN106762331 B CN 106762331B
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- microwave
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- plasmoid
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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
-
- 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
- H01T13/40—Sparking plugs structurally combined with other devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Spark Plugs (AREA)
Abstract
The invention discloses a kind of microwave-assisted plug ignition methods, and this method comprises the following steps: issuing pulse signal to ignition system, trigger the ignition system and generate pulse high-voltage；Pulse signal is issued to microwave system, triggers the microwave pulse that the microwave system generates specific frequency and certain power；The pulse high-voltage is loaded on the spark plug, and the thin combustion gas of arc over generates plasmoid；The microwave pulse radiation microwave energy expands the plasmoid, realizes the igniting of internal combustion engine lean burn.The invention also discloses a kind of microwave-assisted plug ignition integrating devices.Method of the invention combines the advantages of breakdown of spark plug high-voltage discharge and microwave couple energy to plasmoid, and the inventive system comprises ignition systems and microwave system, under combustion chambers of internal combustion engines hyperbaric environment, realize the stable ignition of lean burn.
Description
Technical field
The present invention relates to field of internal combustion engine, more particularly, to a kind of microwave-assisted plug ignition method and its integrate
Device.
Background technique
For the petroleum resource consumption situation for coping with increasingly harsh environmental regulation and sternness, internal-combustion engine engineering teacher needs not
The disconnected internal-combustion engine technology for being dedicated to developing high-efficiency cleaning.Lean Burning Technique improves combustion using high air-fuel ratio and high compression ratio
Oily economy simultaneously improves exhaust emissions level, be most potential raising internal combustion engine thermal efficiency in internal combustion engine combustion system it
One.But internal combustion engine realize lean burn even ultra lean burn when, there are ignition difficulties, the problems such as flame propagation is unstable.It is logical
Traditional raising ignition energy method is crossed, effect is unobvious, and can shorten spark plug life.
Current automobile-used ignition internal combustion engine generallys use spark plug to light a fire, and plug ignition technology is led in internal combustion engine
The application in domain is very mature.After internal combustion engine start, apply an instantaneous pulse high-voltage (generally on spark plug
15000V), high field is formed between high-field electrode and grounding electrode, arc through fuel gas mixture generates high temperature and pressure
Plasma spark, to realize igniting.But when air mixture equivalent is smaller, i.e., when fuel oil is diluter, conventional spark plug
Mixed gas can only be punctured and form initial plasmoid, and enough energy can not be supplied to meet the needs of ignition process,
This results in the igniting of internal combustion engine lean burn to be encountered by difficulty.
Magnetron is as a kind of device for generating microwave, and the application of (micro-wave oven) is also quite general in daily life
Time.Microwave as a kind of frequency electromagnetic waves, can into plasma lighter weight electronics coupled energy, thus plasma
And the influence in terms of ambient enviroment generation thermodynamics and kinetics.In addition, microwave, which meets metal material in spatial, to be sent out
Raw reflection, and meeting nonmetallic materials such as glass etc. will penetrate, and lose little.
Patent document CN103470427A discloses a kind of microwave plasma ignition combustion system of internal combustion engine.System benefit
With the microwave pulse of microwave igniter feed-in specific frequency into combustion chambers of internal combustion engines, occur that microwave in the combustion chamber humorous
Vibration, to puncture fuel gas mixture and realize that space multiple spot catches fire, improves internal combustion to generate a uniformly distributed strong electrical field in space
Machine lean burn combustibility.Quasi- lighted a fire using microwave cavity of the system substitutes conventional ignition plug completely, has certain answer
Use prospect.
But a kind of microwave plasma ignition combustion system of internal combustion engine is still deposited disclosed in patent document CN103470427A
Following insufficient:
(1) to make microwave that resonance occur in combustion chambers of internal combustion engines, it just must be to traditional classical combustion chambers of internal combustion engines configuration
It is transformed to reach fit size, not only improvement cost is big for this, but also will affect the spraying and burning of internal combustion engine；
(2) under internal combustion engine high combustion chamber pressures environment, microwave resonance is only relied on, is still difficult to stablize the thin combustion gas of breakdown, make
It must light a fire unstable.
Summary of the invention
A kind of microwave-assisted plug ignition method is provided for above insufficient or Improvement requirement, the present invention of the prior art
And its integrating device, it is intended that coupling energy to plasmoid in conjunction with the breakdown of spark plug high-voltage discharge and microwave
The advantages of, realize the stable ignition of thin combustion gas.
To achieve the goals above, according to one aspect of the present invention, a kind of microwave-assisted plug ignition method is provided,
This method comprises the following steps:
(1) pulse signal is issued to ignition system, triggers the ignition system and generates pulse high-voltage；
(2) pulse signal is issued to microwave system, triggers the microwave system and generates the micro- of specific frequency and certain power
Wave impulse；
(3) pulse high-voltage is loaded on the spark plug, and the thin combustion gas of arc over generates plasma
Group；
(4) the microwave pulse radiation microwave energy expands the plasmoid, realizes the stable ignition of lean burn.
Further, the step (2) postpones or specific time in advance compared with step (1).
Further, the pulse frequency of microwave pulse described in the pulse frequency of the microwave pulse is 10KHZ~20KHZ,
For improving the utilization rate of the microwave pulse.
Other side according to the invention provides a kind of microwave-assisted plug ignition integrating device, which is characterized in that
The device includes ignition system, microwave system and mixer, and the ignition system and microwave system are realized by mixer
It is integrated；
Wherein, the ignition system includes spray point end and grounding electrode, and pulse high-voltage acts on the spray point
End forms strong electrical field between spray point end and grounding electrode and punctures lean mixture combustion gas formation initial plasma group；
The microwave system includes magnetron and driven by magnetron coil, and the driven by magnetron coil is for generating driving
Pulse high-voltage signal needed for magnetron, the pulse high-voltage signal driving magnetron generate the microwave arteries and veins of specific frequency
Punching.
Further, the mixer includes capacitor, for preventing the pulse high-voltage from conducting to the microwave system.
Further, the mixer further includes inductance, for preventing the microwave pulse from entering the ignition system.
Further, the microwave system further includes three pin tuners, for carrying out impedance matching, makes the microwave arteries and veins
Rush power loss minimum.
Further, the microwave system further includes transition waceguide, for the microwave pulse to be conducted to three pin
Follow closely tuner.
Further, the ignition system further includes specific dielectric, as microwave pulse described in channel conductance, institute
Specific dielectric is stated with optimal pattern length, microwave field can be made between spray point end and grounding electrode most strong and leakproofness
It can be best.
Further, the ignition system further includes central electrode, for conducting the pulse high-voltage signal to institute
State spray point end.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) the advantages of breakdown of spark plug high-voltage discharge and microwave are to plasmon coupling energy, structure of the present invention are combined
The above technology thought can realize the stable ignition to thin combustion gas under combustion chambers of internal combustion engines hyperbaric environment；
(2) the lean burn limit for widening existing spark-ignition type internal combustion engine, without carrying out combustion chambers of internal combustion engines knot
The transformation of structure the advantages of so as to inherit original combustion in IC engine cell structure, and reduces cost of implementation.
(3) device specifically includes ignition system and microwave system, and the ignition system is hit using transient high voltage
Wear the indoor lean mixture combustion gas of burning and generate hot plasma group, the microwave system radiation microwave energy expand it is described it is equal from
Daughter group.The device can realize the stable ignition of thin combustion gas under combustion chambers of internal combustion engines hyperbaric environment.
Detailed description of the invention
Fig. 1 is a kind of microwave-assisted plug ignition integrating device schematic diagram of the embodiment of the present invention；
Fig. 2 is the knot on the spark plug head that a kind of microwave-assisted plug ignition integrating device of the embodiment of the present invention is related to
Structure schematic diagram.
In all attached drawings, identical appended drawing reference indicates same structure element, in which: 1- vehicle power supply, 2- Engine ECU
Control system, 3- ignition coil, 4- mixer, 5- coaxial connector, 6- spark plug 7- waveguide coaxial converter, tri- pin tune of 8-
Humorous device, 9- transition waceguide, 10- magnetron, 11- driven by magnetron coil, 12- conductor casing, 13- dielectric, electrocardio in 14-
Pole, 15- spray point end, 16- grounding electrode.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
Fig. 1 is a kind of microwave-assisted plug ignition integrating device schematic diagram of the embodiment of the present invention.As shown in Figure 1, should
Device includes vehicle power supply 1, Engine ECU control system 2, ignition coil 3, mixer 4, coaxial connector 5, spark plug 6, wave
Guiding coaxial converter 7, three pin tuners 8, transition waceguide 9, magnetron 10, driven by magnetron coil 11；
Fig. 2 is the knot on the spark plug head that a kind of microwave-assisted plug ignition integrating device of the embodiment of the present invention is related to
Structure schematic diagram.As shown in Fig. 2, the device further includes conductor casing 12, dielectric 13, central electrode 14, spray point end 15, connects
Ground electrode 16.
When work, vehicle power supply 1 provides electric energy to ignition coil 3 and driven by magnetron coil 11 respectively；Engine ECU 2
Pulse signal B is issued to ignition coil 3, triggering ignition coil 3 generates pulse high-voltage direct current signal, pulse high-voltage direct current warp
Central electrode 14 acts on spray point end 15, forms strong electrical field between spray point end 15 and grounding electrode 16 and punctures thin mixed
It closes combustion gas and forms initial plasma group, being retarded or advanced through certain time, microwave is from central electrode 14 and metal shell 12
Between dielectric 13 pass through and to the plasmoid radiation energy generated；
On the other hand, the pulse signal A of specific frequency, specific frequency are issued from Engine ECU 2 to driven by magnetron coil 11
The pulse signal A of rate has being retarded or advanced for certain time compared with pulse signal B, and the pulse signal A of specific frequency triggers magnetron
Pulse high-voltage signal needed for driving coil 11 generates driving magnetron 10, the pulse high-voltage signal driving magnetron 10 produce
The microwave pulse of raw 10KHz, microwave frequency 2.45GHz, and conducted by transition waceguide 7, impedance is carried out by three pin tuners 8
Matching makes microwave power loss reduction, then is converted to microwave by waveguide propagation by waveguide coaxial converter 9 and is passed by coaxial cable
It broadcasts, then, the pulse high-voltage direct current signal that microwave pulse signal and ignition coil 3 generate is formed after the processing of mixer 4 to be collected
It at signal, is conducted by same root cable, eventually by coaxial connector 5 and spark plug 6, enters combustion chambers of internal combustion engines and act on
Air mixture.Microwave system feed-in microwave energy near discharge electrode into combustion chamber, makes the plasmoid and microwave
The effect of intercoupling.Since the frequency of feed-in microwave is very high, the frequency of the alternating electric field generated is also very high, and plasma
Mass of ion in body group is more much bigger than electronics, so that ion is difficult to be accelerated by microwave electric field, therefore main in plasmoid
It is that electronics is accelerated by microwave electric field and obtains higher-energy.Then, a series of collisions of high energy electron triggering, dissociation, excitation etc. are anti-
Igniting should be then realized to expand plasmoid and increase active group concentration.
Present invention incorporates conventional ignition plugs to generate plasmoid compared with breakdown lean mixture combustion gas under elevated ambient pressures
The advantages of, it extends by radiating microwave energy in rolling into a ball to spark-discharge plasma and being rolled into a ball come auxiliary plasma and reinforces lighting a fire
Journey, the lean flammability limit for then expanding ignition internal combustion engine can be mentioned substantially under the premise of not changing internal combustion engine conventional structure form
Rise the lean burn performance of internal combustion engine.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of microwave-assisted plug ignition integrating device, which is characterized in that the device includes ignition system, microwave system
And mixer (4), the ignition system and microwave system are realized by mixer (4) and are integrated；
Wherein, the ignition system includes metal shell (12), dielectric (13), central electrode (14), spray point end
(15) it is located between central electrode (14) and metal shell (12) with grounding electrode (16), dielectric (13), pulse high-voltage
The spray point end (15) is acted on, form strong electrical field between spray point end (15) and grounding electrode (16) and is punctured thin mixed
It closes combustion gas and forms initial plasma group；The central electrode (14) is put for conducting the pulse high-voltage signal to described
Acusector end (15)；Dielectric (13) of the microwave between central electrode (14) and metal shell (12) passes through and to having generated
Plasmoid radiation energy；The microwave system includes magnetron (10) and driven by magnetron coil (11), the magnetic control
Pipe driving coil (11) is driven for pulse high-voltage signal needed for generating driving magnetron (10), the pulse high-voltage signal
Dynamic magnetron (10) generate the microwave pulse of specific frequency；
The frequency range of microwave pulse is 10KHZ~20KHZ.
2. a kind of microwave-assisted plug ignition integrating device according to claim 1, which is characterized in that the mixer
It (4) include capacitor, for preventing the pulse high-voltage from conducting to the microwave system.
3. a kind of microwave-assisted plug ignition integrating device according to claim 1 or 2, which is characterized in that described mixed
Clutch (4) further includes inductance, for preventing the microwave pulse from entering the ignition system.
4. a kind of microwave-assisted plug ignition integrating device according to claim 1 or 2, which is characterized in that described micro-
Wave system system further includes waveguide coaxial converter (7), three pin tuners (8), transition waceguide (9) and coaxial connector (5), transition
Waveguide (9) is used to for the microwave pulse being conducted to the three pins tuner (8), and three pin tuners (8) are for being hindered
Anti- matching, makes the microwave pulse power loss reduction, and waveguide coaxial converter (7) is used to be converted to microwave by waveguide propagation
It is propagated by coaxial cable, coaxial connector (5) is high for the pulse after mixing for coupling mixer (4) and spark plug (6)
Voltage and microwave are conducted simultaneously to the spark plug.
5. a kind of ignition method based on microwave-assisted plug ignition integrating device described in claim 1, which is characterized in that
This method comprises the following steps:
(1) pulse signal is issued to ignition system, triggers the ignition system and generates pulse high-voltage；
(2) pulse signal is issued to microwave system, triggers the microwave arteries and veins that the microwave system generates specific frequency and certain power
Punching；
(3) pulse high-voltage is loaded on the spark plug, and the thin combustion gas of arc over generates plasmoid；
(4) the microwave pulse radiation microwave energy expands the plasmoid, realizes the stable ignition of lean burn.
6. a kind of ignition method of microwave-assisted plug ignition integrating device according to claim 5, which is characterized in that
The step (2) specific time compared with step (1) delay or in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163589.2A CN106762331B (en) | 2016-12-16 | 2016-12-16 | A kind of microwave-assisted plug ignition method and its integrating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163589.2A CN106762331B (en) | 2016-12-16 | 2016-12-16 | A kind of microwave-assisted plug ignition method and its integrating device |
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| Publication Number | Publication Date |
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| CN106762331A CN106762331A (en) | 2017-05-31 |
| CN106762331B true CN106762331B (en) | 2019-03-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102018125080A1 (en) * | 2018-10-10 | 2020-04-16 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Ignition system with an ignition spark enlarged by an HF plasma of a spark plug with a prechamber and an associated method |
| CN113483344A (en) * | 2021-07-09 | 2021-10-08 | 陕西青朗万城环保科技有限公司 | Microwave-enhanced heat-storage combustion waste gas treatment method and device |
| CN113543444B (en) * | 2021-07-09 | 2024-04-19 | 陕西青朗万城环保科技有限公司 | Microwave-induced metal discharge combustion-supporting method and control system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10356916B3 (en) * | 2003-12-01 | 2005-06-23 | Volker Gallatz | Fuel ignition process for engine combustion chamber involves creating microwave radiation in combustion chamber from source outside it |
| JP2009508045A (en) * | 2005-09-09 | 2009-02-26 | ビーティーユー インターナショナル インコーポレイテッド | Microwave combustion system for internal combustion engines |
| US8226901B2 (en) * | 2007-07-12 | 2012-07-24 | Imagineering, Inc. | Ignition or plasma generation apparatus |
| JP5866684B2 (en) * | 2010-06-02 | 2016-02-17 | イマジニアリング株式会社 | Control device for internal combustion engine |
| CN202231304U (en) * | 2011-09-10 | 2012-05-23 | 李德国 | Durable spark plug capable of being repeatedly disassembled, assembled and cleaned for use |
| CN102410126B (en) * | 2011-09-28 | 2013-11-20 | 四川得弘电子科技有限公司 | Ignition method and system for internal combustion engine |
| JP5835570B2 (en) * | 2011-10-31 | 2015-12-24 | ダイハツ工業株式会社 | Spark ignition internal combustion engine |
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