CN102545064A - Symmetric pair extremely-strong electric field discharge type spark plug - Google Patents
Symmetric pair extremely-strong electric field discharge type spark plug Download PDFInfo
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Abstract
The invention relates to a symmetric pair extremely-strong electric field discharge type spark plug, which mainly comprises a central electrode and a bonding electrode, wherein a first discharge action surface of the central electrode and a second discharge action surface of the bonding electrode are respectively provided with first discharge bulges and second discharge bulges which are equal in quantity; the first discharge bulges and the second discharge bulges are blade-shaped and correspond one by one; in addition, net sectional areas of two corresponding endpoints of an ignition electrode of the spark plug are respectively gradually reduced towards the tail ends along a normal direction of the first discharge action surface and the second discharge action surface; a first blade point side and a second blade point side which linearly extend are respectively formed at the tail ends of the first discharge bulges and the second discharge bulges; the first blade sides correspond to the second blade sides one by one, so that the central electrode and the bonding electrode have corresponding discharge blade point side structures; and therefore net sectional areas of the two discharge action ends are reduced, the charge density of discharge blade point ends is promoted, an ignition electric field intensity is rapidly established, and the purpose of improving combustion efficiency, saving fuel oil, and the like are further achieved.
Description
Technical field
The present invention is the relevant extremely strong electric field discharge type of a kind of symmetric pair spark plug; Especially refer to that corresponding two-end-point central electrode of a kind of plug ignition electrode and building electrode have corresponding discharge knife edge end structure; By the net sectional area that dwindles electrode discharge effect end; Promote the charge density of discharge knife edge end,, and then reach the technology that improves combustion efficiency and save effects such as fuel oil with quick foundation igniting electric field strength.
Background technology
Be applied among the vehicle or the ignition system of internal combustion engine by the spark plug configuration known system; Mainly to be the high-voltage electrode bonding that will be provided by ignition coil with the first discharge process face of central electrode carry out high-voltage discharge to the second discharge process face of electrode bonding for it, uses to produce the ignition arc effect and reach the purpose that engine fires running.By on learn that the igniting usefulness quality of spark plug and the accuracy of plug ignition will concern the engine benefit and the performance of exerting oneself performance.
In view of this, each relevant manufacturer innovates the discharging structure that improves spark plug in the fourth of the twelve Earthly Branches invariably enough with all strength.A kind of preceding case of patent that can produce multi-strike ignition is arranged; Like No. the 71490th, the novel patent in Taiwan " novel most ignition spark plugs " and No. 233853 " many sparks formula spark plug "; It lies in the lower insulator center and establishes a center positive electrode, and establishes two center positive electrode bars in upper insulator, by the induction of high-tension electricity; Make crack between each center positive electrode bar, the above spark ignition of secondary is done in outermost positive electrode bar and building electrode gap simultaneously.Though commonly using structure, this has the above spark ignition structure function of secondary, precisely because be to extend with central electrode, with the center positive electrode of charge transfer to the bit parallel position; Again building electrode is discharged; Because electric charge only receives the attraction of higher electric field, the ability of higher electric field attracts electric charge is fast more, so patent just moves to ignition point the electrode bonding of one side; And can't be to reaching the Expected Results of refire time discharge, so that the usefulness of refire time discharge be relatively poor.Moreover; " many sparks formula spark plug " though the structure of commonly using have the above spark ignition structure function of secondary; Because electric charge only receives the attraction of higher electric field, the ability of higher electric field attracts electric charge is fast more, so patent can only can't produce mulitple ignition by inserting electrode towards the central electrode discharge; Also can't be to reaching the Expected Results of refire time discharge, so the aforementioned structure of commonly using has necessity of improvement again.
Other has a kind of preceding case of spark plug patent that can reach regnition; Like No. the 372113rd, the novel patent in Taiwan " the two spark fire of infiltration (interaction) spark plug mutually "; It lies on the central electrode end face radial location and offers a circular groove, makes the central electrode end face form the igniting face of two different sizes.This is commonly used structure system and utilizes the point discharge effect; Heart electrode edge corner regions promoted discharge electric field in advance among system used less net sectional area; And then to the generation igniting discharge of relative large electrode zone, though its central electrode capable of using edge corner regions promotes discharge electric field in advance; Only, it only possesses one pole lifting discharge electric field slightly, though have in the igniting effect; But can't arc density be concentrated; Therefore, make miscella vapour reach the purpose of completing combustion, necessity of improvement is more still arranged so this commonly uses structure than increasing the burning benefit of engine.
Moreover; Other has a kind of preceding case of patent that can produce the arc discharge effect; " encircle all formula arcing spark plugs " and novel No. 351542, patent gazette M " spark plug " like the novel patent gazette the 225355th in Taiwan; The maximum difference of itself and above-mentioned spark plug is that building electrode system adopts the ring-type setting, and with side face outside the central electrode as the discharge process district, so that electrion is carried out in side face zone within the annular building electrode.Though this commonly uses the effect that structure can produce arc discharge, promote ignition effectiveness to increase ignition area, only; After the ignition point area increases; Electric field density certainly will reduce, and ignition point electric arc is not easy to concentrate and the time of arcing is postponed, and is easy to generate misfire and untimely effect; And then influence the ignition effectiveness of spark plug, so this commonly uses necessity that structure still has improvement.
In addition; The preceding case of patent that many burning-points spark plug is arranged is like case before the patents such as Chinese ZL200920058086.8, ZL200920058085.3, ZL200520068930.7, ZL03249134.4, ZL02239946.1, ZL02200024.0, ZL94218163.8 and ZL02121285.6.Yet case before these patents mainly is the structure that central electrode or building electrode is designed to multi-point spark, and it is not designed to like corresponding knife edge shape electrode structure of the present invention.Obviously, these preceding case patented technologies, though tool multi-point spark structure function, but still can't strengthen the igniting critical electric field effectively apace; And must could promote igniting usefulness by the mode that strengthens voltage, moreover; Charge density can not strengthen, and ignition arc can not be concentrated, precisely because not only power consumption; And when fast turn-around, have that prolong the duration of ignition and ignition arc too a little less than, and cause the disappearance of the clear and consumption oil of ignition effectiveness.And it is if electrode design is become the pin mark structure, and can't bear electrion, is easy to impaired and the increasing of guiding discharge gap, can't use, and significantly lowers its durability.
A kind of preceding case of the long-pending patent of electrode sections of dwindling is still arranged, like U.S. US 5,461,210, US 5; 461,276 and US 7,589,460 patents before case; Though case has the function that strengthens critical electric field before these patents because dwindling electrode sections, its electrode end contracts and is the pin mark shape to the center, like the described situation of leading portion, behind long-term electrion; Be easy to impaired and the guiding discharge gap is strengthened, cause ignition voltage to promote misfire and can't use, significantly lower its durability.
Summary of the invention
One of the present invention purpose is to provide a kind of enhancing igniting charge density and sets up effective electric field strength fast, improves the spark plug that combustion efficiency reduces exhaust pollution and saves fuel oil.Efficacy of technical means to achieve the above, includes a center electrode lines, and a grounding electrode, the center of the first discharge electrode active surface and the grounding effect of the second discharge electrode has the same number of faces of the convex portion and the first discharge second discharge convex portion, a first convex portion and the discharge portions of the second discharge was knife-edged projections, each corresponding to each other towards, and its effective cross-sectional area size of the first discharge, respectively, along the side effects of the action face of the second discharge method two lines corresponding to the direction toward the end of the electrode gradually reduced, and the first discharge portion and the projection of the second discharge end of the convex portion extending in a straight line are respectively formed of a first side and a second blade edge of the blade, the first blade edge and the second two sides opposite each blade, the center electrode and the grounding electrode of the discharge blade has a corresponding edge structure, functioning as an electrode terminal to reduce the effective cross-sectional area of the blade to enhance the discharge side of the charge density and the establishment of the electric field strength, and thus can achieve the above object.
Another object of the present invention is to provide a kind of and more can strengthens igniting electric field strength fast, improves the spark plug of combustion efficiency and saving fuel oil.Reach the technological means of aforementioned effect; System is with the discharge knife edge limit structure of central electrode and building electrode; Be designed to symmetrical structural configuration, that is, the first discharge protuberance and the second discharge protuberance; The two is symmetrical datum level and symmetrically from root to terminal shape system with one of its normal direction vertical plane, and then can reach above-mentioned purpose.
Another object of the present invention; Be to provide a kind of and not only strengthen effective igniting electric field strength fast, and can increase ignition arc really and concentrate on the effect end, to improve combustion efficiency and saving fuel oil; And knife edge symmetry limit is auxiliary, can guarantee the coverage of igniting.Reach the technological means of aforementioned effect; System becomes knife edge limit structure with electrode design, that is the first discharge protuberance and the second discharge protuberance are respectively a plurality of; And equidistantly be distributed in respectively on the first discharge process face and the second discharge process face on, and then can reach above-mentioned purpose.
Description of drawings
Fig. 1 is the stereogram of first kind of embodiment of the present invention;
Fig. 2 is the partial enlarged drawing of first kind of embodiment of the present invention;
Fig. 3 is the partial top view of first kind of embodiment of the present invention;
Fig. 4 is the stereogram of second kind of embodiment of the present invention;
Fig. 5 is the partial enlarged drawing of second kind of embodiment of the present invention;
Fig. 6 is the partial top view of second kind of embodiment of the present invention;
Fig. 7 is the firing circuit principle schematic of the present invention when using;
Fig. 8 a is a rotating speed 1000rpm (frequency: the signal waveform analysis chart of not improveing spark plug under test condition 16.667-HZ);
Fig. 8 b is a rotating speed 1000rpm (frequency: the signal waveform analysis chart of spark plug of the present invention under test condition 16.667-HZ);
Fig. 9 a is a rotating speed 2000rpm (frequency: the signal waveform analysis chart of not improveing spark plug under test condition 33.333-HZ);
Fig. 9 b is a rotating speed 2000rpm (frequency: the signal waveform analysis chart of spark plug of the present invention under test condition 33.333-HZ);
Figure 10 a is a rotating speed 3000rpm (frequency: the signal waveform analysis chart of not improveing spark plug under test condition 50-HZ);
Figure 10 b is a rotating speed 3000rpm (frequency: the signal waveform analysis chart of spark plug of the present invention under test condition 50-HZ);
Figure 11 a is a rotating speed 4000rpm (frequency: the signal waveform analysis chart of not improveing spark plug under test condition 66.667-HZ);
Figure 11 b is a rotating speed 4000rpm (frequency: the signal waveform analysis chart of spark plug of the present invention under test condition 66.667-HZ);
Figure 12 a is a rotating speed 5000rpm (frequency: the signal waveform analysis chart of not improveing spark plug under test condition 83.333-HZ); And
Figure 12 b is a rotating speed 5000rpm (frequency: the signal waveform analysis chart of spark plug of the present invention under test condition 83.333-HZ).
Embodiment
A. the present invention's technical characterictic
Please referring to shown in Fig. 1-3, the present invention's spark plug system is applied among the vehicle (for example locomotive or automobile) or the ignition system of internal combustion engine.The essential structure of spark plug of the present invention comprises spark plug body 10, central electrode 20 and building electrode 30.Body 10 is made by the material of tool insulation effect, to reach insulation and high temperature resistant requirement.Central electrode 20 electrically connects with ignition control circuit, and in order to accepting from the high-tension electricity that ignition coil produced, and building electrode 30 produces electrions relatively, to light a fire.Building electrode 30 is connected with the metal ring body 34 of a tool thread surface 340, screws togather interlocking by thread surface 340 and engine housing, makes building electrode 30 be able to be in the ground connection form.
One feature of the present invention, takes advantage of the center electrode 20 and the grounding electrode 30 is designed to discharge the corresponding blade-like tip structures, to reduce the role of the two electrodes side of the effective cross-sectional area, quickly enhance ignition field strength, thereby improving combustion efficiency, in order to achieve the purpose of saving fuel.
Another feature of the present invention, the Department of the center electrode 20 and the grounding electrode 30, the discharge tip of the blade-like structure, design, structural shape symmetrical to each other, to further enhance the charge density, concentrated arc ignition, improve combustion efficiency and to achieve a more save fuel purposes.
Another feature of the present invention, the Department through the electrode tip multiple blade-like structure, not only quickly enhance ignition field strength, and can actually increase the ignition charge density, in order to improve combustion efficiency and fuel savings, and multiple blade-shaped tip structure mutual assistance, to ensure the effectiveness and reduce the ignition point ignition electrode short circuit due to carbon deposition useless.
One feature of the present invention, the first protrusion 22 and the second discharge protrusions 32 respectively disposed in the discharge blade-like discharge structure, a first blade and the second blade edge 220 along a straight line extending edge 320, after prolonged use local depletion, the first blade edge 220 and the second blade edge 320 between the effective distance between the tip of the discharge ignition has not changed (in the general specifications, the effective discharge ignition spacing distance 4mm, 6mm and 8mm), a substantial increase in life .And can reduce carbon distribution.
B. first kind of specific embodiment of the present invention
Shown in Figure 1-3, the present invention is a first embodiment, the action face 21 respectively to the first discharge electrode 20 in the center of the top of the grounding electrode 30, the action face 31 of the second discharge electrode 20 is located in the center of the top of the top, wherein the center electrode 20 of the active surface 21 and the first discharge electrode 30 and the grounding surface 31 of the second discharge action are provided respectively on the same number of first convex portion 22 and the second discharge discharge projection portion 32, a first discharge protrusions 22 and the second convex portion 32 respectively disposed in the discharge blade-like tip structures, and one by one relative orientation, and the thickness of the discharge along the first active surface 21 and the second surface 31 of the discharge action and the normal direction gradually toward its end narrow, and the first convex portion 22 and the second discharge discharge end protrusions 32 are formed having a thickness of minimum shrinkage and a line extending parallel to the length of a particular blade on a first side edge 220 and a second blade 320, the first a blade edge 220 and the second blade parallel to the opposite side 320 each, and each blade edge of the first blade 220 and a second side 320 extending a length greater than its thickness, and each blade edge of the first blade 220 and a second side 320 of the maximum thickness less than 0.6mm (less than optimal 0.2mm), if the blade perpendicular to the first side 220 and a second longitudinal direction of the blade edge 320 extending observe a cross-section, a first discharge section 22 and the second discharge projection projecting portion 32 was a cross-sectional contours were V-shaped.In the present embodiment, the shape system of the first discharge protuberance 22 and the second discharge protuberance 32 is a symmetrical datum level and symmetrical with one of this normal vertical plane, and first knife edge limit 220 and second knife edge limit 320 is parallel with this vertical plane respectively and equidistance.Moreover; In the present embodiment; Corresponding first knife edge limit 220 and second knife edge limit 320 are parallel to a straight line parallel and extend; This straight line position makes first knife edge limit 220 and 320 difference positions, second knife edge limit on a contour plane on a vertical plane of the normal of the first discharge process face 21 and the second discharge process face 31.
Wherein, The first discharge protuberance 22 and the second discharge protuberance 32 respectively with central electrode 20 and building electrode 30 with the moulding of Machining Technology for Cutting process technology, make the first discharge protuberance 22 and the second discharge protuberance 32 be same material and one-body molded with central electrode 20 and building electrode 30 respectively.
C. second kind of specific embodiment of the present invention
Shown in Fig. 4-6; Second kind of specific embodiment of the present invention; System three first discharge process faces, 21 central angles such as grade are arranged is distributed in the side face of central electrode 20, and the second discharge process face 31 of building electrode 30 has three, and one by one to the first discharge process face 21 towards central electrode 20 side faces.The center of the first discharge electrode 20 and the grounding effect of the surface 21 of the second discharge electrode 30 are respectively on the action face 31 has a first discharge and a second convex portion 22 convex portion 32 discharge, the first convex portion 22 and the second discharge opposite each discharge toward the convex portion 32, and the thickness of the discharge, respectively, of a first active surface 21 and the second surface 31 of the discharge action and the normal direction gradually reduced towards the distal end, respectively, showed a blade-like tip structures, and the first a discharge projection 22 and the second discharge end of the convex portion 32 are formed having a thickness reduced to a minimum, and a line extending parallel to the length of a particular blade on a first side edge 220 and a second blade 320, 220 and the first blade edge The second blade parallel to the opposite side 320 each, and each blade edge of the first blade 220 and a second side 320 extending a length greater than its thickness, and each blade edge of the first blade 220 and each of the second side 320 of the maximum thickness less than 0.6mm (most preferably less than 0.2mm), if the blade perpendicular to the first side 220 and second side 320 extending the longitudinal direction of the blade a cross-section observation, the first convex portion 22 and discharging the second discharge portion 32 projecting cross-section, respectively, showed a V-shaped contour.In the present embodiment, the shape system of the first discharge protuberance 22 and the second discharge protuberance 32 is a symmetrical datum level and symmetrical with one of this normal vertical plane, and first knife edge limit 220 and second knife edge limit 320 is parallel with this vertical plane respectively and equidistance.Moreover; In the present embodiment; Corresponding first knife edge limit 220 and second knife edge limit 320 are parallel to a straight line L and extend in parallel; This straight line L position makes first knife edge limit 220 and 320 difference positions, second knife edge limit on a contour plane on a vertical plane P of the normal of the first discharge process face 21 and the second discharge process face 31.
Wherein, The first discharge protuberance 22 and the second discharge protuberance 32 respectively with central electrode 20 and building electrode 30 with the Machining Technology for Cutting moulding, make the first discharge protuberance 22 and the second discharge protuberance 32 be same material and one-body molded with central electrode 20 and building electrode 30 respectively.
D. the present invention's experiment
Material miscellaneous can conduct electricity, and is to decide according to ability the rank of the atom peripheral tracks conduction band valence electron of its material, and atomic nucleus is to the binding force height of peripheral tracks conduction band valence electron, and the conductivity of material is just relatively poor, and impedance behavior is also higher.Atomic nucleus is low to the binding force of peripheral tracks conduction band valence electron, and the conductivity of material is just preferable, and resistance is also less.Metal material is that its peripheral tracks conduction band valence electron is fettered by atomic nucleus hardly, becomes free electron because at normal temperatures for the good conductive body, so can become good conductor.Aerial electric discharge phenomena are to set up powerful electric field because of high voltage, when electric field strength reaches the critical electric field size of air conduction, make the atom peripheral tracks conduction band valence electron of air break away from the binding force of atomic nucleus and conduct electricity, and are commonly referred to as corona discharge.In addition, point discharge means metal tip because of assembling a large amount of electric charges, and the metal tip surface area is less, the big electric field of the higher foundation of charge density, when metal tip electric field strength increases, is easier to guide dissimilar charges and combines with it, forms electric discharge phenomena; Lightning rod both had been to use this kind metal tip principle to use the guiding flow of charge and has not flowed through nearby buildings through the lightning rod conductor and reach the purpose of protecting building.
By above inference, the igniting of general spark plug also is to use the principle of end points discharge.Ignition signal is seen off by the ignition timing angle, after electron-amplifier amplifies signal, drives high-voltage ignition coil, and output HIGH voltage is to spark plug.Flow of charge is through the central electrode conductor; Set up a central electrode conductor end points potential drop, flow to ignitor again and set up electric field, when ignitor two ends electric field reaches the conduction critical electric field size of the mixed oil and gas that compresses in the engine cylinder; The ignitor two ends are set up some thermoelectricity electrode potentials simultaneously and are fallen; This moment, electric charge began conduction via the mixed oil and gas that compresses in the engine cylinder, produced electric arc, and the mixed oil and gas of lighting compression in the engine cylinder makes it explosive combustion.So the end points total voltage of whole spark plug is reduced to central electrode conductor potential drop and is added the ignitor potential drop.The centrality of ignition arc and real-time are very big for the benefit influence of engine; The mixed oil and gas ignition arc spark that in cylinder, compresses is concentrated more; Its igniting benefit is high more; When the igniting electric field is set up to the conduction critical electric field of the mixed oil and gas that compresses in the engine cylinder more soon, the real-time of lighting a fire is good more.
Generally commonly use the ignitor end points of spark plug because the corresponding endpoint table area of its ignitor is excessive; Charge density is lower; It is difficult that foundation reaches the critical conduction electric field of the mixed oil and gas of compression in the engine cylinder, and need bigger high-voltage ignition coil voltage to set up usually and reach the critical conduction electric field that causes ignition arc, but higher Electromagnetic Interference (the Electromagnetic Interference that also increased of high-voltage ignition coil voltage; EMI) disturbing effect, moreover; The corresponding endpoint table area of ignitor of commonly using spark plug is excessive; Ignition arc is difficult for concentrating, and has also reduced the ignition arc benefit and high-voltage ignition coil voltage is higher, also needs the more time stored charge to set up electric field; Cause firing delay easily, the engine benefit reduces.
This patent field Gauss's law (Gaussian Theorem), the spark plug ignition point corresponding to the electrode ends, reducing the effective cross-sectional area, in order to enhance the charge density, accelerate the establishment of the engine cylinder compressed mixed gas conducting the threshold electric field, charge density , accelerate the establishment of the electric field strength, making the spark plug electrodes corresponding to the two end points is easier to reach the critical field of mixed oil and the conductivity, resulting in the ignition arc; borrow again from the blade-like structure endpoint ignition, guided concentrated arc, which can increase the speed of real-time ignition and accuracy, and to improve the engine cylinder of compressed mixed gas combustion efficiency and reduce engine exhaust pollution and fuel savings and other effects.
The basic circuit principle of plug ignition is shown in the 7th figure, and its ignition principle is when spark plug passes to electric current I, can produce flow of charge at central electrode, its electric current with reach (2) through electric charge and the relation of time such as formula (1):
I＝Δq/Δt (1)
Δq＝IΔt (2)
Wherein, Δ q is the total electrostatic charge of the each igniting of high-tension coil through sparking-plug electrode; Δ t is that high-tension coil is lighted a fire at every turn, and it's the time of sparking-plug electrode is past flow of charge.
Moreover; Utilize the following formula (3) of Gauss law (Gauss ' law), (4) and (5) to learn; Under the condition that total electrostatic charge is fixed; Electric field
the corresponding end points net sectional area with ignitor of size
is inverse ratio; That is net sectional area is more little; Charge density is high more; The conduction critical electric field of mixed oil and gas is set up fast more; The net sectional area of the corresponding end points of ignitor is more little, and arc spark is concentrated more more by force.
ε＝kε
o (5)
Wherein, ε
oDielectric coefficient (permittivity of free space) for vacuum; ε is the dielectric coefficient of mixed oil and gas; K is the dielectric constant (dielectric constant) of mixed oil and gas: k=ε/ε
oΦ is electric flux (electric flux);
It is the electric field between two corresponding ignitor end points;
Net sectional area for electrode.
Utilize the igniting critical potential V between following two corresponding ignitor end points again
TFormula (6).Work as electric field
In setting up fast, distance between two ignitors
Under the constant condition, the igniting critical potential V between its two corresponding ignitor end points
TAlso comparatively fast reach, and the above-mentioned formula of foundation (1) can be learnt, in spark plug current I and the two corresponding ignitor end-point distances of flowing through to (5)
Under the constant condition, when the net sectional area of ignitor end points
When dwindling, electric field strength increases, relatively electric field energy density u
EFormula (7) increases, and ignition arc strengthens.
Wherein, u
EBe the electric field energy density between two corresponding ignitor end points.
is the distance between two corresponding ignitor end points.V
TFor producing the critical potential of ignition arc between two corresponding ignitor end points of spark plug.r
iIt is first electrode position between two corresponding ignitor end points.r
fIt is second electrode position between two corresponding ignitor end points.
Igniting critical potential between spark plug two corresponding ignitor end points is set up by the critical electric field of ignitor end points; The critical electric field of ignitor end points provides electric charge by the voltage of high-voltage ignition coil; It is very fast that blade-like discharge tip structure is set up the igniting critical electric field, so the voltage that can make high-voltage ignition coil offer spark plug reduces, this moment, flow of charge was through the central electrode conductor; The potential drop of foundation also descends, please referring to shown in Fig. 8 a to 12b.Rotating speed 1000rpm (frequency: test condition 16.667-HZ), Fig. 8 a is 5.81kV for the igniting high voltage of not improveing spark plug, Fig. 8 b is 5.31kV for the igniting high voltage of spark plug of the present invention; Rotating speed 2000r pm (frequency: test condition 33.333-HZ), Fig. 9 a is 6.44kV for the igniting high voltage of not improveing spark plug, Fig. 9 b is 5.00kV for the igniting high voltage of spark plug of the present invention; Rotating speed 3000rpm (frequency: test condition 50-HZ), Figure 10 a is 6.56kV for the igniting high voltage of not improveing spark plug, Figure 10 b is 5.63kV for the igniting high voltage of spark plug of the present invention; Rotating speed 4000rpm (frequency: test condition 66.667-HZ), Figure 11 a is 6.00kV for the igniting high voltage of not improveing spark plug, Figure 11 b is 5.56kV for the igniting high voltage of spark plug of the present invention; Rotating speed 5000rpm (frequency: test condition 83.333-HZ), Figure 12 a is 6.19kV for the igniting high voltage of not improveing spark plug, Figure 12 b is 5.63kV for the igniting high voltage of spark plug of the present invention.Really can set up the igniting critical electric field effectively fast by can clearly comparing the present invention shown in Fig. 8 a to 12b; Reduce the stored charge time, the spark plug end-point voltage is descended, and the igniting high voltage of spark plug descends; Electromagnetic Interference EMI also can be less; When engine speed was accelerated, the igniting critical electric field of setting up the ignitor end points fast was more capable important, and the present invention also is applicable to when engine speed is accelerated; The igniting critical electric field of one stable ignitor end points is provided, promotes plug ignition efficient and reach carbon reduction and prolong the purpose that material uses.
Please referring to shown in Fig. 4-7; When electric current through angle of ignition coil 40, CD ignition system (Capacitor Discharge Ignition; CDI) 41 and during high-tension coil 42; Because on first discharge process face 21 of central electrode 20 and the second discharge process face 31 of building electrode 30, be provided with sectional area and dwindle gradually and the corresponding one by one first discharge protuberance 22 and the second discharge protuberance 32 towards end, the end of its first discharge protuberance 22 and the second discharge protuberance 32 is assembled electric charge; And do centrostigma thermoelectricity lotus density and discharge; Not only make the knife edge 32 of the first discharge protuberance 22 and the second discharge protuberance produce some thermoelectricity arcs firing the mixed oil and gas of combustion chamber, and can effectively avoid cold run and block carbon between electrode, and then can increase the instantaneous ignition usefulness of engine combustion chamber; Make the combustion chamber reach completing combustion, and then promote the usefulness of engine running.
Please referring to shown in table one and the table two, the present invention uses mixed signal oscilloscope (Agilent 54622D), exhaust-gas analyzer (Hand Held Gas Analyser KANEAUTO 4-4), high pressure probe (Tektronix P6015A), power supply generator (GWINSTEK GPS4303) and signal generator instrument and equipments such as (GFG 8020H) to detect.Obtain hydrocarbon HC and the exhaust emission data of carbon monoxide CO shown in table one through experiment; Whole and the calculating with these experimental datas; Can obtain HC and CO exhaust emission decline ratio situation shown in table one; Wherein: test for the first time, the present invention makes HC and the CO in the engine exhaust descend 42.25% and 19.25% respectively; Test for the second time, the present invention makes HC and the CO in the engine exhaust descend 16.57% and 10.06% respectively; Test for the third time, the present invention makes HC and the CO in the engine exhaust descend 24.49% and 15.30% respectively.Can learn that by table one the sparking-plug electrode structure that utilizes the present invention to design obviously makes fuel combustion more complete.And, the present invention's spark plug is installed on the light sun G5 locomotive uses the data shown in the acquisition table two through driving experiment; Install when generally commonly using spark plug; It is 25.94 that every liter of fuel oil can drive milimeter number, and when spark plug of the present invention was installed, it was 28.34 that every liter of fuel oil can drive milimeter number.Therefore,, use the present invention's spark plug, can promote combustion efficiency really effectively and economize functional oil by experiment confirm.
The suppression ratio of table one: HC and CO exhaust emission value is than situation
Table two: consumption oil analysis (using car money-light sun G5)
E. conclusion
Therefore; By above-mentioned theory and structural design; The present invention not only can set up igniting critical electric field between two corresponding ignitor end points of spark plug fast, concentrate ignition arc, effectively promotes combustion efficiency, pollutes function and reach fuel-efficient and reduce engine exhaust; And can reduce spark plug high-voltage ignition coil voltage, reduce EMI; And, can guarantee spark plug normal ignition gap because of the design of the equidistant interstitial structure of the blade type between two corresponding ignitor end points, take place with the situation of avoiding cold run, effectively extending plug useful life.
The above; Be merely the present invention's possible embodiments; Be not in order to limiting the present invention's claim, all acts are held within said according to following claim, characteristic with and spirit and for it the equivalence of other variation implement, all should be contained in the present invention's the claim.
Claims (10)
1. the extremely strong electric field discharge type of symmetric pair spark plug; It includes a spark plug body; And be located at a central electrode and the building electrode on this body; This central electrode and this building electrode have at least one first discharge process face and at least one second discharge process face respectively, and this first discharge process face is corresponding one by one with this second discharge process face and be separated with a bit fiery gap; It is characterized in that:
Active surface of the first discharge, and the second discharge, respectively, with the same number of the action face of the first projection portion and the second discharge discharge protrusions; the first discharge portion and the convex portions of the second discharge was blade-like projections tip structures and opposite each face, and the thickness of the discharge along the first active surface and the second one of the faces normal to the direction of discharge effect and gradually reduced toward its end, and the discharge of the first convex portion and the second The discharge end of each convex portion having a thickness reduced to a minimum, and a line extending parallel to the length of a particular edge of a first blade and the second blade edge of the first blade edge and the second edge opposite each blade.
2. the spark plug of request terms 1, wherein, this first discharge process face with this first discharge protuberance is positioned at the top of this central electrode, and this second discharge process face with this second discharge protuberance is positioned on this central electrode top.
3. the spark plug of request terms 2, wherein, this first discharge protuberance with this second discharge protuberance have respectively a plurality of, and relative orientation one by one.
4. the spark plug of request terms 1; Wherein, This first discharge process face have a plurality of and etc. central angle be distributed in the side face of this central electrode, it is a plurality of that this second discharge process face of this building electrode has, and this first discharge process face on this central electrode side face one by one; Be respectively equipped with this first discharge protuberance and this second discharge protuberance on each this first discharge process face and each this second discharge process face.
5. the extremely strong electric field discharge type of symmetric pair spark plug, it includes a spark plug body, and is located at a central electrode and a building electrode on this body; This central electrode and this building electrode have at least one first discharge process face and at least one second discharge process face respectively; This first discharge process face is positioned at the top of this central electrode, and this second discharge process face of this building electrode is positioned on this central electrode top; This first discharge process face is corresponding one by one with this second discharge process face and be separated with a bit fiery gap; It is characterized in that:
Active surface of the first discharge, and the second discharge, respectively, with the action face of a plurality of first protrusions and the second discharge discharge protrusions; the first discharge portion and the convex portions of the second discharge projection was shaped blade tip structures and facing opposite each, and the thickness of the discharge along the first active surface and the second one of the faces normal to the direction of discharge effect and gradually reduced toward its end, and the discharge of the first convex portion, and the second discharge The respective ends of the convex portion having a thickness reduced to a minimum, and a line extending parallel to the length of a particular edge of a first blade and the second blade edge of the first blade edge and the second edge opposite each blade.
6. the extremely strong electric field discharge type of symmetric pair spark plug, it includes a spark plug body, and is located at a central electrode and a building electrode on this body; This central electrode and this building electrode have a plurality of first discharge process faces and a plurality of second discharge process face respectively; Be distributed in the side face of this central electrode, these a plurality of second discharge process faces are separated with a bit fiery gap one by one towards this first discharge process face on this central electrode side face and respectively central angles such as these a plurality of first discharge process faces; It is characterized in that:
The role of each of the first discharge side effects associated with each surface of each of the second discharge has a first discharge and a second discharge protrusion protruding portion; projection of the first discharge portion and the convex portions of the second discharge knife Movement blade-like tip structures, and one by one relative orientation, and the thickness of the discharge along the first and the second active surface of the discharge action face normal direction and gradually reduced toward its end, and the discharge of the first convex portion, and the The second discharge end of each convex portion having a thickness reduced to a minimum, and a line extending parallel to the length of a particular edge of a first blade and the second blade edge of the first blade edge and the second edge opposite each blade.
7. the spark plug of request terms 1,5 or 6, wherein, corresponding this first knife edge limit and this second knife edge limit are parallel to a straight line parallel extends, and this straight line position is on a vertical plane of this normal of this first discharge process face and this second discharge process face.
8. the spark plug of request terms 1,5 or 6, wherein the maximum ga(u)ge on each first knife edge limit and each second knife edge limit is respectively less than 0.6mm.
9. the spark plug of request terms 1,5 or 6, wherein, the shape system of this first discharge protuberance and this second discharge protuberance is a symmetrical datum level and symmetrical with one of this normal vertical plane.
10. the spark plug of request terms 1,5 or 6, wherein, this first discharge protuberance and this second discharge protuberance respectively with this central electrode and this building electrode with the Machining Technology for Cutting moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106098895A CN102545064A (en) | 2010-12-28 | 2010-12-28 | Symmetric pair extremely-strong electric field discharge type spark plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106098895A CN102545064A (en) | 2010-12-28 | 2010-12-28 | Symmetric pair extremely-strong electric field discharge type spark plug |
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| Publication Number | Publication Date |
|---|---|
| CN102545064A true CN102545064A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106098895A Pending CN102545064A (en) | 2010-12-28 | 2010-12-28 | Symmetric pair extremely-strong electric field discharge type spark plug |
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| Country | Link |
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| CN (1) | CN102545064A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084405A (en) * | 2017-04-09 | 2017-08-22 | 王红 | Igniter used in a kind of medium-high frequency sintering firing equipment |
| CN110772718A (en) * | 2019-12-09 | 2020-02-11 | 哈尔滨海鸿基业科技发展有限公司 | Corona discharge therapeutic instrument |
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| JPH05315049A (en) * | 1992-04-30 | 1993-11-26 | Yoshimitsu Yuyama | Improvement of negative pole following improvement of point end of positive electrode in spark plug for internal combustion engine |
| CN2421754Y (en) * | 2000-03-10 | 2001-02-28 | 王俊俊 | Sparking plug water-proof nozzle |
| US6362562B1 (en) * | 1996-01-04 | 2002-03-26 | Paul Rossi | Top and side firing spark plug |
| CN1476133A (en) * | 2002-08-17 | 2004-02-18 | 任淑萍 | Multipole extended inverse arc sparking plug |
| US20100133976A1 (en) * | 2008-11-30 | 2010-06-03 | Max Siegel | Maxx fire spark plug |
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| CN85200952U (en) * | 1985-04-01 | 1986-04-09 | 南京电瓷总厂火花塞分厂 | Convex earth electrode spark plug |
| JPH05315049A (en) * | 1992-04-30 | 1993-11-26 | Yoshimitsu Yuyama | Improvement of negative pole following improvement of point end of positive electrode in spark plug for internal combustion engine |
| US6362562B1 (en) * | 1996-01-04 | 2002-03-26 | Paul Rossi | Top and side firing spark plug |
| CN2421754Y (en) * | 2000-03-10 | 2001-02-28 | 王俊俊 | Sparking plug water-proof nozzle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084405A (en) * | 2017-04-09 | 2017-08-22 | 王红 | Igniter used in a kind of medium-high frequency sintering firing equipment |
| CN107084405B (en) * | 2017-04-09 | 2020-09-01 | 王红 | Igniter for medium-high frequency sintering heating equipment |
| CN110772718A (en) * | 2019-12-09 | 2020-02-11 | 哈尔滨海鸿基业科技发展有限公司 | Corona discharge therapeutic instrument |
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Application publication date: 20120704 |