CN109253030A - A kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure - Google Patents
A kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure Download PDFInfo
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- CN109253030A CN109253030A CN201811258799.9A CN201811258799A CN109253030A CN 109253030 A CN109253030 A CN 109253030A CN 201811258799 A CN201811258799 A CN 201811258799A CN 109253030 A CN109253030 A CN 109253030A
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- air inlet
- anode
- grounding electrode
- inclined hole
- positive
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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
-
- 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
- H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
-
- 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
- H05H1/48—Generating plasma using an arc
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Plasma Technology (AREA)
Abstract
The invention discloses a kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure, including short anode, long anode, anodized insulation positioning sleeve, grounding electrode, air inlet a, air inlet b, air inlet inclined hole；The upper one end of grounding electrode is provided with air inlet a diagonally downward, air inlet b diagonally downward is located at the top other end of grounding electrode, and the air inlet a, air inlet b are connected with ionization space a；In the lower end of the long anode, several air inlet inclined holes circumferentially, diagonally downward are provided with, the high activity gas for will be formed in a small amount of ionization space b introduces air duct.The application is passed through a small amount of air in the lower anode with hollow structure, can be reached for electrode cooling, and generate disturbance to the flow field of nozzle to improve the effect of burning.
Description
Technical field
It is specifically a kind of that there is air inlet inclined hole and eccentric Double-positive-pole structure the present invention relates to a kind of plasma igniter
Plasma igniter.
Background technique
Natural gas is used as engine fuel as a kind of clean energy resource extensively.In power train in vehicle application field, it is with CNG
The passenger car and load-carrying vehicle of fuel are increasing；In ship power field, CNG and LNG powered ship has become " made in China
Focus on research direction in 2025 " planning.Compared with gasoline, the natural gas as gaseous fuel needs bigger ignition energy,
This causes to be difficult with single spark ignitor natural gas the natural gas used for automobile engine of small cylinder diameter in actual use, because
This has to make engine work in such a way that gasoline ignites.Which results in system complex, costs to increase, under reliability
A series of problems, such as drop.Therefore, it is necessary to take novel ignition technology, using relatively simple structure, the height of natural gas is realized
Effect igniting and burning enable natural gas engine to stablize under single-fuel mode, reliable work.
Traditional engine spark plug configuration as shown in Figure 1, in structure generally by a central electrode and with its distance
Closer one or several lateral electrode compositions.When work, ignition coil is the power supply of center electrode, and voltage is up to ten thousand volts of 1.5-2.?
Under High Pressure Difference between contre electrode and lateral electrode, gas is breakdown, shape in the small space between central electrode and lateral electrode
At high temperature discharge channel, igniting and burning start.
The shortcomings that prior art are as follows: (1) existing spark plug easily leads to ignition energy utilization rate often with very high temperature rise
It is low and influence electrode life；(2) ignition range is only located at the small space between central electrode and lateral electrode, is applied to large-diameter
Engine or when being not easy fuel (such as natural gas) lighted, igniting less reliable is easily led to since ignition energy is too small.
Summary of the invention
For solve existing thermal equilibrium plasma igniter technical solution applied on the engine of large space burning room and
Ignition energy is small when applying on natural gas engine, igniting poor reliability, the problems such as ignition energy utilization rate is low, and the application provides
A kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure.
To achieve the above object, the technical solution of the application are as follows: a kind of with air inlet inclined hole and eccentric Double-positive-pole structure
Plasma igniter, including short anode, long anode, anodized insulation positioning sleeve, grounding electrode, air inlet a, air inlet b, air inlet
Inclined hole；The anodized insulation positioning sleeve includes that mounting hole a is equipped in exposure mechanism a and exposure mechanism b, the exposure mechanism a, is stretched
Mounting hole b is equipped in mechanism b out；The anodized insulation positioning sleeve is located in grounding electrode, and one end of the short anode puts in peace
It fills in a of hole, another end of short anode is exposed outside；The upper half of the long anode is put in mounting hole b, the lower half of long anode
Portion is located in grounding electrode；Form an ionization space a between the anodized insulation positioning sleeve and grounding electrode, in long anode under
An insulating space is formed between portion and grounding electrode, the section of the insulating space is in a rectangular trapezoid, the lower end of long anode with connect
An ionization space b is formed between ground electrode, the ionization space a, insulating space are connected with ionization space b；In grounding electrode
Upper one end be provided with air inlet a diagonally downward, air inlet b diagonally downward is located at the top other end of grounding electrode,
The air inlet a, air inlet b are connected with ionization space a；In the lower end of the long anode, it is provided with circumferentially, diagonally downward
Several air inlet inclined holes, high activity gas for will be formed in a small amount of ionization space b introduces air duct.
Further, the long anode has hollow structure, which is air duct.
Further, the application further includes anode positioning bolt a and anode positioning bolt b, the anode positioning bolt a use
Relative position between the short anode of fixation and anodized insulation positioning sleeve, the anode positioning bolt b for fix long anode with
Relative position between anodized insulation positioning sleeve.
Further, the application further includes anodized insulation positioning sleeve pressing plate, fixed for dead earth electrode and anodized insulation
Relative position between the set of position.
Further, the grounding electrode lower part is equipped with one for installing the locating flange of the plasma igniter.
Further, the top of the long anode is exposed outside.
Due to using the technology described above, can obtain following technical effect: this programme uses dielectric impedance to the present invention
Electric discharge-arc discharge combined discharge mode, can the lean flammability limit of nonequilibrium plasma is wide, reactivity is big, and
The advantages such as the operating air pressure height of thermal equilibrium plasma combine, and reach and realize high energy, steady within the scope of wide fuel air ratio
Pinpoint the purpose of fire.Moreover, because the fuel and air for igniting are passed through by air inlet, it is indoor mixed main burning is not needed
It closes gas to flow backwards, therefore can be according to ignition conditions using the side of air of the control through air inlet a and the fuel flow rate through air inlet b
Method control is located at the equivalent proportion of gaseous mixture in ionization space a and ionization space b, and reaching improves ionization and igniting according to actual condition
The purpose of effect.Meanwhile a small amount of air is passed through in the anode with hollow structure, it can be reached for electrode cooling, and to spray
Flow field at mouthful generates disturbance to improve the effect of burning.
Detailed description of the invention
Fig. 1 is engine spark plug configuration schematic diagram traditional in background technique；
Fig. 2 is the cross-sectional view of the application；
Ignition control strategy figure when Fig. 3 is applied to internal combustion engine；
Ignition control strategy figure when Fig. 4 is applied to other engines and burner；
Fig. 5 is the top view of the application.
Number explanation in figure: 1, air inlet a；2, anodized insulation positioning sleeve；3, anode positioning bolt a；4, short anode；5, long
Anode；6, anodized insulation positioning sleeve pressing plate；7, anode positioning bolt b；8, air inlet b；9, grounding electrode；10, locating flange；
11, ionization space b；12, air inlet inclined hole；13, insulating space；14, ionization space a.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments: doing as example to the application
Further description explanation.
As shown in Figs. 1-5, the present embodiment provides a kind of plasma point with air inlet inclined hole and eccentric Double-positive-pole structure
Firearm, including short anode, long anode, anodized insulation positioning sleeve, grounding electrode, anodized insulation positioning sleeve pressing plate, two anodes are fixed
Position bolt；The short anode and long anode are respectively arranged in anodized insulation positioning sleeve, and are fixed respectively by anode positioning bolt
On anodized insulation positioning sleeve, wherein short anode is all wrapped up by anodized insulation positioning sleeve, long anode is hollow structure, there is one
It is wrapped up by anodized insulation positioning sleeve part；In the lower end of the long anode, the several air inlets being provided with circumferentially, diagonally downward are oblique
Hole, the high activity gas for will be formed in a small amount of ionization space b introduce air duct；The anodized insulation positioning sleeve pressing plate is used
Come the relative position of fixed anode insulating positioning sleeve and grounding electrode；There are two air inlets for setting on the grounding electrode, respectively
For being passed through air and fuel, described two air inlets and grounding electrode are in arrangement that is tangential and tilting down respectively, are used
To generate downward eddy flow in ionization space a；The grounding electrode lower end has one to be used to install determining for the plasma igniter
Position flange, the locating flange as needed may also set up in other positions.
When work, a certain amount of air and fuel are passed through by air inlet a and air inlet b respectively.Short anode and long anode by
Power supply is individually powered.Power supply is first that short anode and long anode power (such as: 10,000 volts or less) simultaneously with lower voltage,
At the lower voltage, short anode-anodized insulation positioning sleeve-grounding electrode, long anode-anodized insulation positioning sleeve-grounding electrode it
Between dielectric barrier discharge occurs, dielectric barrier discharge betides in ionization space a.Gas positioned at ionization space a is adding outside
It is ionized under electric field action, generates free electron and the nonequilibrium plasma with positive charge cation composition, chemistry is anti-
Answer active raising.Since voltage is lower at this time, arc discharge does not occur in ionization space b.
Air inlet a and air inlet b are continually fed into air and fuel.Since air inlet a and air inlet b and grounding electrode are tangential
It arranges and tilts down, therefore the air and fuel that are passed through form downward eddy flow in ionization space a；With higher reaction
Active nonequilibrium plasma flows through contraction accelerating sections and enters ionization space b, and air inlet a and air inlet b is closed at this time.Have
Compared with high reaction activity nonequilibrium plasma enter ionization space b after, short anodal opening, long anode be persistently powered and power supply electricity
Pressure raising (such as: ten thousand volts of 1.5-2), arc discharge is occurring between grounding electrode and long anode under action of high voltage.In long sun
While extra-high voltage is powered, the air duct in long anode is passed through air, this partial air is not involved in ionization reaction, role
It is to cool down for electrode, and disturbance is generated to improve burning to the flow field of nozzle.Since the air in air duct is in electroneutral,
The high activity particle that can inhibit combustion reaction to a certain extent, therefore be formed in a small amount of ionization space b by air inlet inclined hole into
Enter in air duct, to properly increase the activity of the air in air duct, carries out with promoting combustion reaction；Due to mixing at this time
The reactivity of gas has improved, therefore igniting and combustion reaction occur rapidly.Flame by the form of large volume flame torch from
Spout is gone out, and into engine chamber, is ignited and is located at the indoor flammable air and fuel mixture that burns.
Specifically, the control method of above-mentioned igniter includes control method on piston-mode motor, starts at other
The control method of machine and burner；
(1) control method on piston-mode motor (reciprocating or rotary piston) specifically: crank position sensing
Device judges crank position, if current crank angle does not arrive setting value, continues to judge；If having arrived setting value, by ECU to power supply
Output low pressure discharge instruction.
After power supply is connected to electric discharge instruction, a certain lower voltage U1 is exported to short anode, is denoted as time t1.At this point, short anode,
Long anode top and grounding electrode discharge, and form dielectric barrier discharge in ionization space a, the gas in ionization space a
It is ionized to nonequilibrium plasma.It is moved downward with that is, being ionized gas, enters ionization by insulating space through the Δ t time
Space b.
In t1+ time Δt, low pressure discharge instruction is terminated, short anode, long anodal opening.At this point, ECU exports height to power supply
Electric instruction is pressed, power supply exports a certain high voltage U2 (U2 > U1) to long anode.At this point, long anode and grounding electrode discharge,
Arc discharge is formed in ionization space b, has the nonequilibrium plasma of very high reaction activity by point in ionization space b
Combustion, combustion reaction start.Flame goes out spout in the form of flame torch, enters main chamber.While long anode discharge,
ECU exports control instruction, is passed through air to the air duct of long anode, cooling for long anode, this partial air goes out spout,
Disturbance is generated to flame jet flow field, promotes combustion efficiency.
ECU reads cylinder pressure sensor signal.If cylinder presses p to be greater than a certain setting value p1, then it is assumed that light a fire successfully, ECU continues
CRANK SENSOR is read, subsequent cycle igniting is carried out；If cylinder presses p to be less than p1, then it is assumed that loss of ignition, at this time ECU
To power source output command, with U2+ Δ U to long anode discharge, and continue to read cylinder pressure signal, until lighting a fire successfully；If working as
Discharge voltage still judges loss of ignition when increasing to setting value U3 (U3 > U2) always, to guarantee that ignitor terminates safely electric discharge,
This circulation is no longer lighted a fire.
(2) in the control method of other engines and burner specifically: ECU issues low pressure discharge instruction to power supply.Electricity
After source is connected to electric discharge instruction, a certain lower voltage U1 is exported to short anode, is denoted as time t1 at this time.At this point, short anode, long anode
Top and grounding electrode discharge, and form dielectric barrier discharge in ionization space a, the gas in ionization space a is ionized
At nonequilibrium plasma.It is moved downward with that is, being ionized gas, enters ionization space b by insulating space through the Δ t time.
In t1+ time Δt, low pressure discharge instruction is terminated, short anodal opening.At this point, ECU refers to power supply output electrion
It enables, power supply exports a certain high voltage U2 (U2 > U1) to long anode.At this point, long anode and grounding electrode discharge, in ionization space
Arc discharge is formed in b, the nonequilibrium plasma in ionization space b with very high reaction activity is ignited, and burning is anti-
It should start.Flame goes out spout in the form of flame torch, enters main chamber.While long anode discharge, ECU output control
Instruction, is passed through air to the air duct of long anode, and cooling for long anode, this partial air goes out spout, to flame jet
Flow field generates disturbance, promotes combustion efficiency.
ECU reads temperature sensor signal, obtains burning room temperature T.If temperature T is greater than a certain setting value T1, then recognize
To light a fire successfully, electrion instruction immediately is terminated, and long anodal opening, ignition process terminates.If temperature T is less than T1, then it is assumed that
Loss of ignition, ECU is to power source output command at this time, with U2+ Δ U to long anode discharge, and continues to read temperature signal, until point
Until igneous function；If still judging loss of ignition when discharge voltage increases to always setting value U3 (U3 > U2), to guarantee ignition power
Extremely safety terminates electric discharge, and exports failure alarm signal.
The protection scope of the invention is not limited thereto, and anyone skilled in the art is in the present invention
It creates in the technical scope disclosed, the technical solution and its inventive concept created according to the present invention are subject to equivalent substitution or change,
It should all cover within the protection scope of the invention.
Claims (6)
1. a kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure, which is characterized in that including short anode,
Long anode, anodized insulation positioning sleeve, grounding electrode, air inlet a, air inlet b, air inlet inclined hole；The anodized insulation positioning sleeve packet
It includes and is equipped with mounting hole a in exposure mechanism a and exposure mechanism b, the exposure mechanism a, be equipped with mounting hole b in exposure mechanism b；It is described
Anodized insulation positioning sleeve is located in grounding electrode, and one end of the short anode is put in mounting hole a, and another end of short anode is naked
It exposes outside；The upper half of the long anode is put in mounting hole b, and the lower portion of long anode is in grounding electrode；The anode
An ionization space a is formed between insulating positioning sleeve and grounding electrode, between the middle and lower part and grounding electrode of long anode formed one every
From space, the section of the insulating space is in a rectangular trapezoid, forms an ionization space between the lower end and grounding electrode of long anode
B, the ionization space a, insulating space are connected with ionization space b；It is provided with diagonally downward in the upper one end of grounding electrode
Air inlet a, air inlet b diagonally downward is located at the top other end of grounding electrode, the air inlet a, air inlet b and ionization
Space a is connected；In the lower end of the long anode, several air inlet inclined holes circumferentially, diagonally downward are provided with, being used for will be a small amount of
The high activity gas formed in ionization space b introduces air duct.
2. a kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure according to claim 1, special
Sign is that the long anode has hollow structure, which is air duct.
3. a kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure according to claim 1, special
Sign is that the application further includes anode positioning bolt a and anode positioning bolt b, the anode positioning bolt a for fixing short sun
Relative position between pole and anodized insulation positioning sleeve, the anode positioning bolt b are fixed for fixing long anode and anodized insulation
Relative position between the set of position.
4. a kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure according to claim 1, special
Sign is that the application further includes anodized insulation positioning sleeve pressing plate, between dead earth electrode and anodized insulation positioning sleeve
Relative position.
5. a kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure according to claim 1, special
Sign is that the grounding electrode lower part is equipped with one for installing the locating flange of the plasma igniter.
6. a kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure according to claim 1, special
Sign is that the top of the long anode is exposed outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811258799.9A CN109253030A (en) | 2018-10-26 | 2018-10-26 | A kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811258799.9A CN109253030A (en) | 2018-10-26 | 2018-10-26 | A kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109253030A true CN109253030A (en) | 2019-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811258799.9A Withdrawn CN109253030A (en) | 2018-10-26 | 2018-10-26 | A kind of plasma igniter with air inlet inclined hole and eccentric Double-positive-pole structure |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59119693A (en) * | 1982-12-25 | 1984-07-10 | 石川島播磨重工業株式会社 | High temperature electrode |
| CN1556564A (en) * | 2003-12-31 | 2004-12-22 | 天津大学 | Ultra high energy spark plug |
| RU2261342C1 (en) * | 2004-04-15 | 2005-09-27 | Весенгириев Михаил Иванович | Internal combustion engine |
| US20090091232A1 (en) * | 2005-11-14 | 2009-04-09 | Renault S.A.S. | Sparkplug for an internal combustion engine |
| US20120176724A1 (en) * | 2010-12-15 | 2012-07-12 | John Antony Burrows | Corona igniter including ignition coil with improved isolation |
| CN102913365A (en) * | 2012-10-08 | 2013-02-06 | 中国人民解放军空军工程大学 | Annular discharge based transient state plasma igniter |
| CN105783028A (en) * | 2014-12-24 | 2016-07-20 | 上海齐耀热能工程有限公司 | Burner ignition device and high-energy igniter |
| CN106438158A (en) * | 2016-11-07 | 2017-02-22 | 中国人民解放军空军工程大学 | Main combustion chamber of aviation engine based on plasma jet ignition combustion |
-
2018
- 2018-10-26 CN CN201811258799.9A patent/CN109253030A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59119693A (en) * | 1982-12-25 | 1984-07-10 | 石川島播磨重工業株式会社 | High temperature electrode |
| CN1556564A (en) * | 2003-12-31 | 2004-12-22 | 天津大学 | Ultra high energy spark plug |
| RU2261342C1 (en) * | 2004-04-15 | 2005-09-27 | Весенгириев Михаил Иванович | Internal combustion engine |
| US20090091232A1 (en) * | 2005-11-14 | 2009-04-09 | Renault S.A.S. | Sparkplug for an internal combustion engine |
| US20120176724A1 (en) * | 2010-12-15 | 2012-07-12 | John Antony Burrows | Corona igniter including ignition coil with improved isolation |
| CN102913365A (en) * | 2012-10-08 | 2013-02-06 | 中国人民解放军空军工程大学 | Annular discharge based transient state plasma igniter |
| CN105783028A (en) * | 2014-12-24 | 2016-07-20 | 上海齐耀热能工程有限公司 | Burner ignition device and high-energy igniter |
| CN106438158A (en) * | 2016-11-07 | 2017-02-22 | 中国人民解放军空军工程大学 | Main combustion chamber of aviation engine based on plasma jet ignition combustion |
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Application publication date: 20190122 |