CN103746291A - Sparking plug - Google Patents
Sparking plug Download PDFInfo
- Publication number
- CN103746291A CN103746291A CN201410043519.8A CN201410043519A CN103746291A CN 103746291 A CN103746291 A CN 103746291A CN 201410043519 A CN201410043519 A CN 201410043519A CN 103746291 A CN103746291 A CN 103746291A
- Authority
- CN
- China
- Prior art keywords
- flow directing
- directing insert
- jetting hole
- fire jetting
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- H01T13/02—Details
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- 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
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/32—Sparking plugs characterised by features of the electrodes or insulation characterised by features of the earthed electrode
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- 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
- H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber
Abstract
The invention discloses a sparking plug which comprises an insulator, a central electrode, a shell, a diversion plug-in and a grounding electrode. The insulator has a shaft hole extending in the axis direction. The central electrode is inserted in the shaft hole which penetrates through the insulator, and is exposed out of the end part. The shell is a hollow cylinder coated on the surface of the insulator. The diversion plug-in is a cylinder body; a flaming hole penetrating through the front and back end surfaces of the diversion plug-in is formed in the center of the diversion plug-in; the diversion plug-in is fixed in the shell; the front end of the diversion plug-in is aligned to the central electrode, the back end is positioned at the opening end of the shell, and the outer wall is bonded with the inner wall of the shell. The grounding electrode is arranged on the inner wall of the shell, or is arranged on the periphery of the flaming hole at the front end of the diversion plug-in; an ignition end part having a spark discharge gap is formed between the grounding electrode and the end of the central electrode. Compared with the prior art, the sparking plug avoids the generation of precipitates and the caused corrosion condition, so that the service life is prolonged. The structure of the diversion plug-in can improve the ignition efficiency and reflowing efficiency of the sparking plug so as to improve the combustion efficiency of an internal combustion engine.
Description
Technical field
The igniting field that the present invention relates to a kind of internal combustion engine, especially relates to a kind of spark plug.
Background technology
Internal combustion engine is after liquid or gaseous fuel are mixed with air, and the high compression combustion chamber burning outburst of directly inputting cylinder internal produces power.It is a kind of heat engine that heat energy is converted into mechanical energy.Spark plug is to be installed on internal combustion engine, for the sparking of the mist in combustion chamber.Refer to Fig. 1, it is the structural representation of prior art spark plug 13.This spark plug 13 comprises a central electrode 132, insulator 134, housing 136 and grounding electrode 138.This insulator 134 is ceramics insulator, has the axis hole extending along axis direction, and this central electrode 132 inserts the axis hole that runs through this insulator 134.This housing 136 is arranged on the periphery of this insulator 134, and the surface of housing 136 has screw thread.This grounding electrode 138 is connected with the end of this housing 136, and bending extension is relative with central electrode 132, and between central electrode 132, forms the gap of sparkover.Between this central electrode 132 and grounding electrode 138, form igniting end, the effect of this igniting end by pulse electric power produces electric arc, and then produces electric spark and light the mist around electrode, reaches the object of automatic ignition.Because the operational environment of spark plug is exceedingly odious, this central electrode 132 and grounding electrode 138 need igniting many times in combustion chamber under high-temperature and high-pressure conditions, and on this electrode, there will be deposit and cause its corrosion, cause being worse off of spark plug.
In order to slow down the speed of worsening of spark plug, technical staff has carried out various improvement to spark plug.As the corrosion resistance by improving electrode material or increase number of electrodes and overcome the etching problem of electrode.But the corrosion resistance that improves electrode material need to propose new electrode material, in the situation that adopting existing electrode material, cannot change the etching problem of electrode; For multiple electrodes are set simultaneously, because the plurality of electrode exposes to the open air equally in combustion chamber, will suffer erosion simultaneously, can not fundamentally solve the anticorrosive problem of electrode.
Or central electrode and grounding electrode are arranged in the cavity of housing.Refer to Fig. 2, it is the structural representation of another spark plug in prior art.This spark plug comprises shell and is fixedly installed in the insulated ceramic core in shell; Central electrode 7 is housed in this insulated ceramic core; The upper end of this central electrode is stretched out insulated ceramic core and is formed an electric discharge end 17; This shell has a flame chamber 11, and this electric discharge end 17 is in flame chamber; In this flame chamber 11, be provided with the grounding electrode 13 that approaches electric discharge end.The discharge ignition apparatus of central electrode and grounding electrode formation is arranged in flame chamber 11, first light the air mixture in flame chamber 11, the mist of the flame ignition combustion chambers of internal combustion engines that recycling flame chamber 11 sprays, create a some fire environment efficiently, and reduced sedimental deposition velocity on electrode.But, for central electrode and grounding electrode are arranged in the cavity of housing, the distance that the spark that can make two electrodes produce enters combustion chamber increases, and then make the burning time of the mist of combustion chamber produce delay, because the compression stroke of internal combustion engine operation and the time of expansion stroke are the set time, shorten the burning time of mist, reduced to a certain extent the combustion efficiency of internal combustion engine, be unfavorable for energy-conserving and environment-protective.
Summary of the invention
The shortcoming that the object of the invention is to overcome prior art, with not enough, provides the spark plug that a kind of combustion efficiency is high.
The present invention is achieved by the following technical solutions: a kind of spark plug, comprises insulator, central electrode, housing, flow directing insert and grounding electrode.It has the axis hole extending along axis direction this insulator.This central electrode inserts and runs through the axis hole of this insulator and expose end.This housing is hollow columnar, is set in this insulator surface.This flow directing insert is column, and center has a fire jetting hole that runs through its front/rear end, and it is fixedly installed in this housing, and front end and central electrode are just right, and rear end is positioned at the openend of housing, the inwall laminating of its outer wall and housing.This grounding electrode arranges on the inwall of housing, or is arranged on the fire jetting hole periphery of the front end of flow directing insert, and between the end of central electrode, forms the igniting end in the gap with sparkover.
Further, this flow directing insert also comprises the pod apertures that runs through its front and back end, and this pod apertures is distributed in the surrounding of this fire jetting hole; Or the sidewall of this flow directing insert is provided with guiding gutter, the inwall formation pod apertures of this guiding gutter and housing in the axial direction.
Further, this flow directing insert also comprises air admission hole, and it is arranged on this guiding gutter and with this fire jetting hole and connects.
Further, on the sidewall of this flow directing insert, also comprise vertical with this fire jetting hole and run through the drainage trough of these many guiding gutters.
Further, the aperture that the fire jetting hole of this flow directing insert is positioned at front end is greater than the aperture of its rear end, and the aperture that this pod apertures is positioned at front end is less than the aperture of its rear end; Or the fire jetting hole of this flow directing insert aperture that is positioned at front end is less than the aperture of its rear end, the aperture that this pod apertures is positioned at front end is greater than the aperture of its rear end.
Further, the fire jetting hole opening that is positioned at the rear end of this flow directing insert protrudes from the openend of this housing, and is horn-like, and the aperture of this fire jetting hole open rearward end is greater than the aperture in this fire jetting hole stage casing, and is less than the aperture of this shell nozzle end.
Further, the fire jetting hole opening that is positioned at the front end of this flow directing insert protrudes from this flow directing insert front end face, forms the igniting end in the gap with sparkover between this central electrode and this fire jetting hole front opening.
Or, be positioned at the fire jetting hole opening indent of front end of this flow directing insert in this flow directing insert front end end face, form a lighting-up tuyere, between this central electrode and the inwall of this lighting-up tuyere, form the igniting end in the gap with sparkover.
Further, this fire jetting hole of pod apertures spiral surrounding of this flow directing insert.
Further, the front end of this flow directing insert is fixed by welding in this housing; Or this flow directing insert is positioned at housing, the openend of this housing forms cambered surface slot end by punching press, so that this flow directing insert is fixed.
With respect to prior art, spark plug of the present invention utilizes fuel more fully, has improved the utilance of fuel.The structure of this flow directing insert can improve ignition effectiveness and the backflow efficiency of spark plug, thereby has improved the combustion efficiency of internal combustion engine.
Below in conjunction with Figure of description, spark plug of the present invention is elaborated.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of spark plug of the prior art.
Fig. 2 is the structural representation of another kind of spark plug in prior art.
Fig. 3 is embodiment 1 structural representation of spark plug of the present invention.
Fig. 4 is the volume rendering structural representation of the flow directing insert shown in Fig. 3.
Fig. 5 is the structural representation of the embodiment 2 of spark plug of the present invention.
Fig. 6 is the structural representation of the flow directing insert of embodiments of the invention 2.
Fig. 7 is the structural representation of the flow directing insert of embodiments of the invention 3.
Fig. 8 is the volume rendering structural representation of the flow directing insert of embodiments of the invention 4.
Fig. 9 is the structural representation of the flow directing insert of embodiments of the invention 5.
Figure 10 is the structural representation of the flow directing insert of embodiments of the invention 6.
Embodiment
embodiment 1
Please refer to Fig. 3, it is embodiment 1 structural representation of spark plug of the present invention.This spark plug 20 comprises central electrode 21, insulator 24, housing 26 and flow directing insert 28.This insulator 24 is ceramics insulator, and it has the axis hole extending along axis direction.This central electrode 21 inserts and runs through the axis hole of this insulator 24 and expose end 211.This housing 26 is hollow structure, is set in the surface of this insulator 24.This flow directing insert 28 is fixedly installed in the housing 26 of this hollow, and its front end and central electrode 21 are just right, and its rear end is positioned at the openend of housing 26, the inwall laminating of its outer wall and housing 26.
Please refer to Fig. 4, it is the volume rendering structural representation of flow directing insert shown in Fig. 3.This flow directing insert 28 is column, is provided with the fire jetting hole 282 that runs through these flow directing insert 28 front/rear ends on its axis, is provided with the pod apertures 283 that runs through these flow directing insert 28 front/rear ends in the surrounding of fire jetting hole 282.This pod apertures 283 is communicated with fire jetting hole 282 by the inner chamber of the housing at flow directing insert 28 front ends.The end 211 of this central electrode 21 extends in the fire jetting hole 282 of this diversion division 28, and the inwall of this fire jetting hole 282 is as grounding electrode 22, forms the igniting end in the gap with sparkover with central electrode 21.The outer surface of this central electrode 21 and grounding electrode 22 all welds noble metal, as iraurite, to improve the performance of its igniting.This flow directing insert 28 can be fixed in this housing 26 by two kinds of modes, and one is: the front end of this flow directing insert 28 is fixed by welding on this housing 26; It two is: first this flow directing insert is inserted in this housing, the openend of this housing is carried out to punching press, form cambered surface slot end, with by fixing this flow directing insert 28.
As to further improvement of this embodiment, the fire jetting hole 282 on front end face and/or the rear end face of this flow directing insert and the connecting portion of pod apertures 283 arrange depression or fin (not shown), further to guide the flow direction of fuel and mist.
When the induction stroke of internal combustion engine, the mist that fuel and air form is full of the cylinder body of combustion chamber simultaneously, because the pressure in cylinder body is much larger than the pressure of plug ignition end, mist is advanced into rapidly spark plug and is full of around igniting end by pod apertures 283 and the fire jetting hole 282 of flow directing insert 28.
And when the pulse firing of spark plug, igniting end in the fire jetting hole of this spark plug has been full of mist around, the ignitor that discharges between this central electrode 21 and grounding electrode 22 mist around, now the gas in fire jetting hole is ignited and is expanded rapidly, pressure increases rapidly, and then promotion spark discharges to cylinder body direction.
When the spark of pulse firing bursts out, the pressure of firing tip reduces rapidly, and now, this pod apertures, as return flow line, is accelerated the backflow of mist in cylinder body.When igniting, cylinder fuel is gathered in rapidly firing tip in a large number, can when flame, make again the gas spark of lighting arrive rapidly cylinder body, has realized the acceleration backflow of gas in spark plug cavity and in the cylinder body of combustion chamber, thereby has improved the combustion efficiency of internal combustion engine.
With respect to prior art, the central electrode 21 of spark plug of the present invention is by the protection of flow directing insert, avoided the situation that occurs deposit and cause its corrosion, improved its useful life.Secondly, in traditional technique, need in housing, weld and multiple catch are set to form this pod apertures and fire jetting hole, complex process is difficult for realizing, and cost is also very high.And the housing of flow directing insert of the present invention and spark plug adopts the fixing processing method of fit again after processing respectively, easily realize, and can improve the production efficiency of spark plug.Further, the structure of this flow directing insert can improve ignition effectiveness and the backflow efficiency of spark plug, thereby has improved the combustion efficiency of internal combustion engine.
embodiment 2
The spark plug of the present embodiment 2 and embodiment's 1 is roughly the same, and its structure of distinguishing the flow directing insert that is only spark plug is different.Please refer to Fig. 5 and Fig. 6, wherein, Fig. 5 is the structural representation of the embodiment 2 of spark plug of the present invention.Fig. 6 is the structural representation of the flow directing insert 38 of the present embodiment 2.This flow directing insert 38 is column, is provided with fire jetting hole 382 and guiding gutter 383 on it.Wherein, this fire jetting hole 382 is circular, is positioned at the axis place of this diversion division 38, and runs through the front/rear end of this diversion division 38.This guiding gutter 383 is positioned on the sidewall of this diversion division 38.This guiding gutter 383 is to form by washing cutting technique, and can form cross section is the shapes such as triangle, polygon, arc.And because this flow directing insert is independent processing component, therefore, can to the internal diameter of this guiding gutter, expand processing easily.Due to the outer wall of this flow directing insert 38 and the laminating of the inwall of housing, this guiding gutter 383 forms pod apertures with the inwall of housing.This pod apertures is large as much as possible according to size, to increase the space that fires water conservancy diversion.Further, on this guiding gutter 383, be also provided with the air admission hole 384 connecting with this fire jetting hole 382.This air admission hole 384 can be vertical with this fire jetting hole 382, or have a certain degree with these fire jetting hole 382 shapes.The end 211 of this central electrode 21 extends in the fire jetting hole 282 of this diversion division 28, and the inwall of this fire jetting hole 282 is as grounding electrode 22, forms the igniting end in the gap with sparkover with central electrode 21.
When this plug ignition, the gas being ignited directly discharges to cylinder body direction by this fire jetting hole 382.Further, this air admission hole 384 can also accelerate the backflow of mist in cylinder body.The direction of gas backstreaming is perpendicular to the sidewall of this flow directing insert 38 substantially, so near region air admission hole 384 is exactly the intersection of crossflow and longitudinal air flow, is the place of gas flow momentum maximum.Therefore, as the optimal way of the present embodiment, the end of central electrode is arranged on near of air admission hole 384, in full out side of gas flow momentum maximum, make the position of firing tip can realize cylinder fuel when igniting and be gathered in a large number rapidly firing tip, can when flame, make again the gas spark of lighting arrive rapidly cylinder body, realize the acceleration backflow of gas in spark plug cavity and in the cylinder body of combustion chamber, thereby improve the combustion efficiency of internal combustion engine.Thereby the speed that further improves gas backstreaming improves the combustion efficiency of internal combustion engine.
embodiment 3
The spark plug of the present embodiment 3 and embodiment's 1 is roughly the same, and its structure of distinguishing the flow directing insert that is only spark plug is different.Refer to Fig. 7, it is the structural representation of the flow directing insert 48 of the present embodiment 3.This flow directing insert 48 is column, is provided with the fire jetting hole 482 that runs through these flow directing insert 48 front/rear ends on its axis, is provided with the pod apertures 483 that runs through these flow directing insert 48 front/rear ends in the surrounding of fire jetting hole 482.This pod apertures 483 is communicated with fire jetting hole 482 by the inner chamber of the housing at flow directing insert 48 front ends.In the present embodiment, the aperture that the fire jetting hole of this flow directing insert is positioned at rear end is greater than the aperture of its front end, and this fire jetting hole is positioned at the opening flare of rear end, and meanwhile, the aperture that this pod apertures is positioned at rear end is less than the aperture of its front end.The port of the front end of the fire jetting hole of this flow directing insert 48 is as grounding electrode, forms the igniting end in the gap with sparkover with central electrode.
As the variant embodiment of the present embodiment, the aperture that the fire jetting hole of this flow directing insert is positioned at front end is greater than the aperture of its rear end, and this fire jetting hole is positioned at the opening flare of front end, and meanwhile, the aperture that this pod apertures is positioned at front end is less than the aperture of its rear end.The end of central electrode extends in the front end of fire jetting hole of this flow directing insert, and the inwall of this fire jetting hole is as grounding electrode, forms the igniting end in the gap with sparkover with central electrode.
Because fire jetting hole is mainly as the passage of igniting of the spark in when igniting, pod apertures is the return flow line as mist, therefore, the ratio in the aperture, fire jetting hole front and back end in the present embodiment is contrary with the ratio in aperture, pod apertures front and back end, in plug ignition process, can further guide the direction of air-flow, accelerate the efficiency of gas backstreaming, thereby further improve the ignition effectiveness of spark plug.
embodiment 4
The spark plug of the present embodiment 4 and embodiment's 1 is roughly the same, and its structure of distinguishing the flow directing insert that is only spark plug is different.Refer to Fig. 8, it is the perspective structure schematic diagram of the flow directing insert 58 of the present embodiment 4.This flow directing insert 58 is column, is provided with the fire jetting hole 582 that runs through these flow directing insert 58 front/rear ends on its axis, is provided with the pod apertures 583 that runs through these flow directing insert 58 front/rear ends in the surrounding of fire jetting hole 582.This pod apertures 583 is communicated with fire jetting hole 582 by the inner chamber of the housing at flow directing insert 58 front ends.In the present embodiment, fire jetting hole 582 openings that are positioned at the rear end of this flow directing insert 58 protrude from the openend of this housing, and are horn-like, and the aperture of these fire jetting hole 582 open rearward end is greater than the aperture in these fire jetting hole 582 stage casings, and are less than the aperture of this shell nozzle end.Be positioned at the opening indent of fire jetting hole 582 of the front end of this flow directing insert 58 in the front end end face of this flow directing insert, form a lighting-up tuyere.Between central electrode and the inwall of this lighting-up tuyere, form the igniting end in the gap with sparkover.
In the present embodiment, the drainage speed of the spark when structure of fire jetting hole can further improve plug ignition, can further improve the ignition effectiveness of spark plug.
embodiment 5
The spark plug of the present embodiment 5 and embodiment's 1 is roughly the same, and its structure of distinguishing the flow directing insert that is only spark plug is different.Refer to Fig. 9, it is the structural representation of the flow directing insert 68 of the present embodiment 5.This flow directing insert 68 is column, on its axis, be provided with the fire jetting hole 682 that runs through these flow directing insert 68 front/rear ends, in the surrounding of fire jetting hole 682, be provided with the guiding gutter 683 that runs through these flow directing insert 68 front/rear ends, this guiding gutter 683 forms pod apertures with the inwall of housing.This pod apertures is communicated with fire jetting hole 682 by the inner chamber of the housing at flow directing insert 28 front ends.Further, guiding gutter 683 and this fire jetting hole 682 of this flow directing insert are non-parallel state, but this this fire jetting hole 682 of guiding gutter 683 spiral surroundings.The fire jetting hole opening that is positioned at the front end of this flow directing insert protrudes from this flow directing insert front end face, forms the igniting end in the gap with sparkover between this central electrode and this fire jetting hole front opening.
The structure setting of this guiding gutter 683 can form whirlpool and reflux, and can further improve the back-flow velocity of mist, further to improve the ignition effectiveness of spark plug.
embodiment 6
The spark plug of the present embodiment 6 and embodiment's 1 is roughly the same, and its structure of distinguishing the flow directing insert that is only spark plug is different.Refer to Figure 10, it is the structural representation of the flow directing insert 38 of the present embodiment 6.This flow directing insert 78 is column, is provided with fire jetting hole 782 and guiding gutter 783 on it.Wherein, this fire jetting hole 782 is circular, is positioned at the axis place of this diversion division 78, and runs through the front/rear end of this diversion division 78.This guiding gutter 783 is positioned on the sidewall of this diversion division 78, and runs through the front/rear end of this diversion division 78.Further, on the sidewall of this flow directing insert 78, also comprise the drainage trough 784 that runs through these many guiding gutters 783.This drainage trough 784 can be vertical with this fire jetting hole, or this drainage trough 784 has a certain degree around this guiding gutter 783 and with fire jetting hole shape.Add man-hour, by washing cutting technique, first form guiding gutter 783, and then centered by fire jetting hole, horizontal cross cutting forms drainage trough 784.Due to the outer wall of this flow directing insert 78 and the laminating of the inwall of housing, this guiding gutter 783 forms pod apertures with the inwall of housing, and this drainage trough 784 forms conduction hole with the inwall of housing.The central electrode of this spark plug stretches in fire jetting hole, and grounding electrode is positioned on the inwall of flow directing insert of fire jetting hole, and vertical with central electrode just right, forms the igniting end in the gap with sparkover.This igniting end can be positioned at the front end of this flow directing insert, or stage casing, or rear end.This drainage trough 784 is one or more.In the present embodiment, by drainage trough, guiding gutter is communicated with, forms a large diversion space, the explosive force when increasing plug ignition, thus further improve its ignition effectiveness.
In addition, spark plug of the present invention can also have various deformation embodiment, and the structure that is specially the setting of fire jetting hole, pod apertures, conduction hole, air admission hole and grounding electrode in the flow directing insert in the various embodiments described above can be arranged in pairs or groups and be combined with arbitrarily; At the end face of this flow directing insert, this fire jetting hole and pod apertures or guiding gutter form flabellum shape or spiral structure; And, at the leading section of this fire jetting hole and/or pod apertures or the inwall of rearward end, be provided with shape of threads fin or depression further to guide the flow direction of mist.
The present invention is not limited to above-mentioned execution mode, if the various changes to invention or distortion do not depart from the spirit and scope of the present invention, if within these changes and distortion belong to claim of the present invention and equivalent technologies scope, the present invention is also intended to comprise these changes and distortion.
Claims (10)
1. a spark plug, is characterized in that, comprises
---insulator, it has the axis hole extending along axis direction;
---central electrode, its insertion runs through the axis hole of this insulator and exposes end;
---housing, it is hollow columnar, this housing is set in this insulator surface;
---flow directing insert, it is column, and center has a fire jetting hole that runs through its front/rear end, and this flow directing insert is fixedly installed in this housing, and its front end and central electrode are just right, and its rear end is positioned at the openend of housing, the inwall laminating of its outer wall and housing;
---grounding electrode, it arranges on the inwall of housing, or is arranged on the fire jetting hole periphery of the front end of flow directing insert, and between the end of central electrode, forms the igniting end in the gap with sparkover.
2. spark plug according to claim 1, is characterized in that: this flow directing insert also comprises the pod apertures that runs through its front and back end, and this pod apertures is distributed in the surrounding of this fire jetting hole; Or the sidewall of this flow directing insert is provided with guiding gutter, the inwall formation pod apertures of this guiding gutter and housing in the axial direction.
3. spark plug according to claim 2, is characterized in that: this flow directing insert also comprises air admission hole, and it is arranged on this guiding gutter and with this fire jetting hole and connects.
4. spark plug according to claim 2, is characterized in that: on the sidewall of this flow directing insert, also comprise the drainage trough that runs through these many guiding gutters.
5. spark plug according to claim 2, is characterized in that: the aperture that the fire jetting hole of this flow directing insert is positioned at front end is greater than the aperture of its rear end, and the aperture that this pod apertures is positioned at front end is less than the aperture of its rear end; Or the fire jetting hole of this flow directing insert aperture that is positioned at front end is less than the aperture of its rear end, the aperture that this pod apertures is positioned at front end is greater than the aperture of its rear end.
6. spark plug according to claim 2, it is characterized in that: the fire jetting hole opening that is positioned at the rear end of this flow directing insert protrudes from the openend of this housing, and being horn-like, the aperture of this fire jetting hole open rearward end is greater than the aperture in this fire jetting hole stage casing, and is less than the aperture of this shell nozzle end.
7. spark plug according to claim 6, it is characterized in that: the fire jetting hole opening that is positioned at the front end of this flow directing insert protrudes from this flow directing insert front end face, between this central electrode and this fire jetting hole front opening, form the igniting end in the gap with sparkover.
8. spark plug according to claim 6, it is characterized in that: be positioned at the fire jetting hole opening indent of front end of this flow directing insert in this flow directing insert front end end face, form a lighting-up tuyere, between this central electrode and the inwall of this lighting-up tuyere, form the igniting end in the gap with sparkover.
9. according to the spark plug described in arbitrary claim in claim 2-8, it is characterized in that: this fire jetting hole of pod apertures spiral surrounding of this flow directing insert.
10. spark plug according to claim 9, is characterized in that: the front end of this flow directing insert is fixed by welding in this housing; Or this flow directing insert is positioned at housing, the openend of this housing forms cambered surface slot end by punching press, so that this flow directing insert is fixed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410043519.8A CN103746291B (en) | 2014-01-29 | 2014-01-29 | A kind of spark plug |
| PCT/CN2014/091871 WO2015113439A1 (en) | 2014-01-29 | 2014-11-21 | Sparking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410043519.8A CN103746291B (en) | 2014-01-29 | 2014-01-29 | A kind of spark plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103746291A true CN103746291A (en) | 2014-04-23 |
| CN103746291B CN103746291B (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410043519.8A Active CN103746291B (en) | 2014-01-29 | 2014-01-29 | A kind of spark plug |
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| Country | Link |
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| CN (1) | CN103746291B (en) |
| WO (1) | WO2015113439A1 (en) |
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| CN103956654A (en) * | 2014-05-09 | 2014-07-30 | 张蝶儿 | Sparking plug |
| CN104767123A (en) * | 2015-03-20 | 2015-07-08 | 张蝶儿 | Spark plug |
| WO2015113438A1 (en) * | 2014-01-29 | 2015-08-06 | 张蝶儿 | Spark plug and ignition system of internal combustion engine using spark plug |
| WO2015113439A1 (en) * | 2014-01-29 | 2015-08-06 | 张蝶儿 | Sparking plug |
| CN105633800A (en) * | 2014-10-31 | 2016-06-01 | 张蝶儿 | Spark plug |
| CN106549305A (en) * | 2015-09-21 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
| CN106549304A (en) * | 2015-09-21 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
| CN106549307A (en) * | 2015-09-21 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
| CN106549303A (en) * | 2015-09-21 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
| CN107317221A (en) * | 2017-07-06 | 2017-11-03 | 张蝶儿 | A kind of spark plug with Flow amplification external member |
| CN110350397A (en) * | 2018-04-08 | 2019-10-18 | 霾消天蓝（北京）环保科技有限公司 | A kind of high temperature-resisting spark plug |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6373321B2 (en) * | 2016-09-13 | 2018-08-15 | 日本特殊陶業株式会社 | Spark plug |
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| WO2015113438A1 (en) * | 2014-01-29 | 2015-08-06 | 张蝶儿 | Spark plug and ignition system of internal combustion engine using spark plug |
| WO2015113439A1 (en) * | 2014-01-29 | 2015-08-06 | 张蝶儿 | Sparking plug |
| CN103956654A (en) * | 2014-05-09 | 2014-07-30 | 张蝶儿 | Sparking plug |
| CN103956654B (en) * | 2014-05-09 | 2016-08-17 | 张蝶儿 | A kind of spark plug |
| CN105633800A (en) * | 2014-10-31 | 2016-06-01 | 张蝶儿 | Spark plug |
| CN105633800B (en) * | 2014-10-31 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
| CN104767123A (en) * | 2015-03-20 | 2015-07-08 | 张蝶儿 | Spark plug |
| CN106549307A (en) * | 2015-09-21 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
| CN106549304A (en) * | 2015-09-21 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
| CN106549305A (en) * | 2015-09-21 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
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| CN106549307B (en) * | 2015-09-21 | 2019-02-05 | 张蝶儿 | A kind of spark plug |
| CN106549305B (en) * | 2015-09-21 | 2019-02-05 | 张蝶儿 | A kind of spark plug |
| CN106549304B (en) * | 2015-09-21 | 2019-02-05 | 张蝶儿 | A kind of spark plug |
| CN107317221A (en) * | 2017-07-06 | 2017-11-03 | 张蝶儿 | A kind of spark plug with Flow amplification external member |
| CN107317221B (en) * | 2017-07-06 | 2022-12-27 | 张蝶儿 | Spark plug with flow amplification kit |
| CN110350397A (en) * | 2018-04-08 | 2019-10-18 | 霾消天蓝（北京）环保科技有限公司 | A kind of high temperature-resisting spark plug |
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| CN103746291B (en) | 2015-11-04 |
| WO2015113439A1 (en) | 2015-08-06 |
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