CN103746291B - A kind of spark plug - Google Patents
A kind of spark plug Download PDFInfo
- Publication number
- CN103746291B CN103746291B CN201410043519.8A CN201410043519A CN103746291B CN 103746291 B CN103746291 B CN 103746291B CN 201410043519 A CN201410043519 A CN 201410043519A CN 103746291 B CN103746291 B CN 103746291B
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- CN
- China
- Prior art keywords
- flow directing
- directing insert
- housing
- jetting hole
- fire jetting
- Prior art date
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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
- H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber
-
- 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
-
- 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
Abstract
A kind of spark plug, comprises insulator, central electrode, housing, flow directing insert and grounding electrode.This insulator its there is the axis hole extended in the axial direction.This central electrode inserts the axis hole exposed end that run through this insulator.This housing is hollow columnar, is set in this insulator surface.This flow directing insert is column, and center has the 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, and the inwall of its outer wall and housing is fitted.This grounding electrode is arranged on the inwall of housing, or is arranged on the fire jetting hole periphery of front end of flow directing insert, and forms the firing end portion in the gap with sparkover between the end of central electrode.Relative to prior art, this spark plug avoids and occurs deposit and the situation causing it to corrode, and improves its useful life.This flow directing insert structure can improve ignition effectiveness and the backflow efficiency of spark plug, thus improves the combustion efficiency of internal combustion engine.
Description
Technical field
The present invention relates to a kind of igniting field of internal combustion engine, especially relate to a kind of spark plug.
Background technology
Internal combustion engine is after liquid or gaseous fuel being mixed with air, and the high compression combustion chamber burning outburst directly inputting cylinder internal produces power.Be a kind of heat engine of mechanical energy by thermal energy.Spark plug is 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 extended in the axial direction, and this central electrode 132 inserts the axis hole running 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 forms the gap of sparkover between central electrode 132.Form firing end portion between this central electrode 132 and grounding electrode 138, this firing end portion produces electric arc by the effect of pulse power, and then produces the mist of spark ignition surrounding them, 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 this electrode there will be deposit and cause it to corrode, and 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 overcome the etching problem of electrode.But the corrosion resistance improving electrode material needs to propose new electrode material, cannot change the etching problem of electrode when adopting existing electrode material; For arranging multiple electrode simultaneously, because the plurality of electrode exposes to the open air in a combustion chamber equally, will suffer erosion simultaneously, fundamentally can not 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; This insulated ceramic core is built with central electrode 7; 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; The grounding electrode 13 close to electric discharge end is provided with in this flame chamber 11.The discharge ignition apparatus that central electrode and grounding electrode are formed 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 one and put fire environment efficiently, and reduce 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 two electrodes can be made to produce enters combustion chamber increases, and then the burning time of the mist of combustion chamber is delayed, because the compression stroke of internal combustion engine operation and the time of expansion stroke are the set time, then shorten the burning time of mist, reduce the combustion efficiency of internal combustion engine to a certain extent, be unfavorable for energy-conserving and environment-protective.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art and deficiency, the spark plug that a kind of combustion efficiency is high is provided.
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.This insulator its there is the axis hole extended in the axial direction.This central electrode inserts the axis hole exposed end that run through this insulator.This housing is hollow columnar, is set in this insulator surface.This flow directing insert is column, and center has the 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, and the inwall of its outer wall and housing is fitted.This grounding electrode is arranged on the inwall of housing, or is arranged on the fire jetting hole periphery of front end of flow directing insert, and forms the firing end portion in the gap with sparkover between the end of central electrode.
Further, this flow directing insert also comprises the pod apertures running 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 in the axial direction, the inwall of this guiding gutter and housing forms pod apertures.
Further, this flow directing insert also comprises air admission hole, and it to be arranged on this guiding gutter and through with this fire jetting hole.
Further, 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 being positioned at the rear end of this flow directing insert protrudes from the openend of this housing, and in 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.
Further, the fire jetting hole opening being positioned at the front end of this flow directing insert protrudes from this flow directing insert front end face, forms the firing end portion 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 the front end of this flow directing insert in this flow directing insert front end surface, form a lighting-up tuyere, between this central electrode and inwall of this lighting-up tuyere, form the firing end portion with the gap of 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, this flow directing insert to be fixed by punching press.
Relative to prior art, spark plug of the present invention utilizes fuel more fully, improves the utilance of fuel.The structure of this flow directing insert can improve ignition effectiveness and the backflow efficiency of spark plug, thus improves the combustion efficiency of internal combustion engine.
Below in conjunction with Figure of description, spark plug of the present invention is described in detail.
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 extended in the axial direction.This central electrode 21 inserts the axis hole exposed end 211 that run through this insulator 24.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, its front end and central electrode 21 just right, its rear end is positioned at the openend of housing 26, and the inwall of its outer wall and housing 26 is fitted.
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, its axis is provided with the fire jetting hole 282 running through this flow directing insert 28 front/rear end, is provided with the pod apertures 283 running through this flow directing insert 28 front/rear end 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 in flow directing insert 28 front end.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, as grounding electrode 22, forms the firing end portion 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 is 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 insert in this housing by this flow directing insert, carry out punching press to the openend of this housing, forms cambered surface slot end, this flow directing insert 28 to be fixed.
As to further improvement of this embodiment, the fire jetting hole 282 on the front end face and/or rear end face of this flow directing insert and the connecting portion of pod apertures 283 arrange depression or fin (not shown), to guide the flow direction of fuel and mist further.
When the induction stroke of internal combustion engine, the mist that fuel and air are formed 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 spark plug rapidly by the pod apertures 283 of flow directing insert 28 and fire jetting hole 282 and is full of around firing end portion.
And when the pulse firing of spark plug, mist is filled with around firing end portion in the fire jetting hole of this spark plug, the mist discharged between this central electrode 21 and grounding electrode 22 around ignitor, gas now in fire jetting hole is ignited and undergoes rapid expansion, 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, accelerates the backflow of mist in cylinder body.When lighting a fire, cylinder fuel is gathered in firing tip rapidly in a large number, can the gas spark lighted be made to arrive cylinder body rapidly when flame again, achieves the acceleration backflow of gas in spark plug cavity and in the cylinder body of combustion chamber, thus improves the combustion efficiency of internal combustion engine.
Relative to prior art, the central electrode 21 of spark plug of the present invention, by the protection of flow directing insert, avoids and occurs deposit and the situation causing it to corrode, improve its useful life.Secondly, in traditional technique, need welding in housing to arrange multiple catch to form this pod apertures and fire jetting hole, complex process not easily realizes, and cost is also very high.And the housing of flow directing insert of the present invention and spark plug adopt process respectively after fit is fixing again processing method, easily realize, and the production efficiency of spark plug can be improved.Further, the structure of this flow directing insert can improve ignition effectiveness and the backflow efficiency of spark plug, thus improves the combustion efficiency of internal combustion engine.
embodiment 2
The spark plug of the present embodiment 2 and the roughly the same of embodiment 1, its difference is only that the structure of the flow directing insert of 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.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 formed 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, expansion processing can be carried out to the internal diameter of this guiding gutter easily.Because the outer wall of this flow directing insert 38 and the inwall of housing are fitted, then 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 firing water conservancy diversion.Further, this guiding gutter 383 is also provided with the air admission hole 384 through 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 this fire jetting hole 382 shape.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, as grounding electrode 22, forms the firing end portion in the gap with sparkover with central electrode 21.
When this plug ignition, directly discharged to cylinder body direction by this fire jetting hole 382 by the gas ignited.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 the region near air admission hole 384 is exactly the intersection of crossflow and longitudinal air flow, is the maximum place of gas flow momentum.Therefore, as the optimal way of the present embodiment, the end of central electrode is arranged near air admission hole 384, in the maximum full out side of gas flow momentum, make the position of firing tip can realize the cylinder fuel when lighting a fire and be gathered in firing tip in a large number rapidly, can the gas spark lighted be made when flame to arrive cylinder body rapidly again, achieve the acceleration backflow of gas in spark plug cavity and in the cylinder body of combustion chamber, thus improve the combustion efficiency of internal combustion engine.Thus the speed improving gas backstreaming further improves the combustion efficiency of internal combustion engine.
embodiment 3
The spark plug of the present embodiment 3 and the roughly the same of embodiment 1, its difference is only that the structure of the flow directing insert of 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, its axis is provided with the fire jetting hole 482 running through this flow directing insert 48 front/rear end, is provided with the pod apertures 483 running through this flow directing insert 48 front/rear end 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 in flow directing insert 48 front end.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, as grounding electrode, forms the firing end portion 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 the fire jetting hole of this flow directing insert, and the inwall of this fire jetting hole, as grounding electrode, forms the firing end portion in the gap with sparkover with central electrode.
Because fire jetting hole is mainly as the passage of igniting of spark during 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, the direction of air-flow can be guided further, accelerate the efficiency of gas backstreaming, thus improve the ignition effectiveness of spark plug further.
embodiment 4
The spark plug of the present embodiment 4 and the roughly the same of embodiment 1, its difference is only that the structure of the flow directing insert of 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, its axis is provided with the fire jetting hole 582 running through this flow directing insert 58 front/rear end, is provided with the pod apertures 583 running through this flow directing insert 58 front/rear end 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 in flow directing insert 58 front end.In the present embodiment, fire jetting hole 582 opening being positioned at the rear end of this flow directing insert 58 protrudes from the openend of this housing, and in horn-like, the aperture of this fire jetting hole 582 open rearward end is greater than the aperture in this fire jetting hole 582 stage casing, and is less than the aperture of this shell nozzle end.Be positioned at the opening indent of the fire jetting hole 582 of the front end of this flow directing insert 58 in the front end surface of this flow directing insert, form a lighting-up tuyere.The firing end portion with the gap of sparkover is formed between central electrode and the inwall of this lighting-up tuyere.
In the present embodiment, the drainage speed of the spark when structure of fire jetting hole can improve plug ignition further, can further improve the ignition effectiveness of spark plug.
embodiment 5
The spark plug of the present embodiment 5 and the roughly the same of embodiment 1, its difference is only that the structure of the flow directing insert of 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, its axis is provided with the fire jetting hole 682 running through this flow directing insert 68 front/rear end, be provided with the guiding gutter 683 running through this flow directing insert 68 front/rear end in the surrounding of fire jetting hole 682, 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 in flow directing insert 28 front end.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 surrounding.The fire jetting hole opening being positioned at the front end of this flow directing insert protrudes from this flow directing insert front end face, forms the firing end portion in the gap with sparkover between this central electrode and this fire jetting hole front opening.
The vibrational power flow of this guiding gutter 683 can form whirlpool backflow, can further improve the back-flow velocity of mist, to improve the ignition effectiveness of spark plug further.
embodiment 6
The spark plug of the present embodiment 6 and the roughly the same of embodiment 1, its difference is only that the structure of the flow directing insert of 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.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, the sidewall of this flow directing insert 78 also comprises the drainage trough 784 running 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 with fire jetting hole shape around this guiding gutter 783.Adding man-hour, by washing cutting technique, first forming guiding gutter 783, and then centered by fire jetting hole, horizontal cross cutting forms drainage trough 784.Because the outer wall of this flow directing insert 78 and the inwall of housing are fitted, then 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 the flow directing insert of fire jetting hole, and vertical with central electrode just right, forms the firing end portion with the gap of sparkover.This firing end portion 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, to increase explosive force during plug ignition, thus improve its ignition effectiveness further.
In addition, spark plug of the present invention can also have various deformation embodiment, and the structure being 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 arbitrarily and is combined; 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, be provided with shape of threads fin or depression to guide the flow direction of mist further at this fire jetting hole and/or the leading section of pod apertures or the inwall of rearward end.
The present invention is not limited to above-mentioned execution mode, if do not depart from the spirit and scope of the present invention to the various change of inventing or distortion, if these are changed and distortion belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these changes and distortion.
Claims (9)
1. a spark plug, is characterized in that, comprises
Insulator, it has the axis hole extended in the axial direction;
Central electrode, it inserts the axis hole exposed end that run through this insulator;
Housing, it is hollow columnar, and this housing is set in this insulator surface;
Flow directing insert, it is column, and center has the 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, and the inwall of its outer wall and housing is fitted; This flow directing insert also comprises the pod apertures running 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 in the axial direction, the inwall of this guiding gutter and housing forms pod apertures; Described pod apertures is communicated with described fire jetting hole;
Grounding electrode, it is arranged on the inwall of housing, or is arranged on the fire jetting hole periphery of front end of flow directing insert, and forms the firing end portion in the gap with sparkover between the end of central electrode.
2. spark plug according to claim 1, is characterized in that: this flow directing insert also comprises air admission hole, and it to be arranged on this guiding gutter and through with this fire jetting hole.
3. spark plug according to claim 1, is characterized in that: also comprise vertical with this fire jetting hole on the sidewall of this flow directing insert and run through the drainage trough of these many guiding gutters.
4. spark plug according to claim 1, 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.
5. spark plug according to claim 1, it is characterized in that: the fire jetting hole opening being positioned at the rear end of this flow directing insert protrudes from the openend of this housing, and in 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.
6. spark plug according to claim 5, it is characterized in that: the fire jetting hole opening being positioned at the front end of this flow directing insert protrudes from this flow directing insert front end face, forms the firing end portion in the gap with sparkover between this central electrode and this fire jetting hole front opening.
7. spark plug according to claim 5, it is characterized in that: be positioned at the fire jetting hole opening indent of the front end of this flow directing insert in this flow directing insert front end surface, form a lighting-up tuyere, between this central electrode and inwall of this lighting-up tuyere, form the firing end portion with the gap of sparkover.
8. the spark plug according to claim arbitrary in claim 1-7, is characterized in that: this fire jetting hole of pod apertures spiral surrounding of this flow directing insert.
9. spark plug according to claim 8, 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, this flow directing insert to be fixed by punching press.
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 |
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| Publication Number | Publication Date |
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| CN103746291A CN103746291A (en) | 2014-04-23 |
| CN103746291B true CN103746291B (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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) |
Cited By (1)
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| CN107819272A (en) * | 2016-09-13 | 2018-03-20 | 日本特殊陶业株式会社 | Spark plug |
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| CN103746291B (en) * | 2014-01-29 | 2015-11-04 | 张蝶儿 | A kind of spark plug |
| CN103779788B (en) * | 2014-01-29 | 2015-11-25 | 张蝶儿 | A kind of spark plug and use the ignition system of internal combustion engine of this spark plug |
| CN103956654B (en) * | 2014-05-09 | 2016-08-17 | 张蝶儿 | A kind of spark plug |
| CN105633800B (en) * | 2014-10-31 | 2017-03-29 | 张蝶儿 | A kind of spark plug |
| CN104767123B (en) * | 2015-03-20 | 2017-01-18 | 张蝶儿 | Spark plug |
| CN106549303B (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 |
| 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 |
| CN107317221B (en) * | 2017-07-06 | 2022-12-27 | 张蝶儿 | Spark plug with flow amplification kit |
| CN110350397B (en) * | 2018-04-08 | 2021-05-14 | 霾消天蓝（北京）环保科技有限公司 | High-temperature-resistant spark plug |
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| CN103779788B (en) * | 2014-01-29 | 2015-11-25 | 张蝶儿 | A kind of spark plug and use the ignition system of internal combustion engine of this spark plug |
| CN103746291B (en) * | 2014-01-29 | 2015-11-04 | 张蝶儿 | A kind of spark plug |
| CN203826770U (en) * | 2014-01-29 | 2014-09-10 | 张蝶儿 | Spark plug and igniting system of internal combustion engine using spark plug |
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| US1538750A (en) * | 1922-08-25 | 1925-05-19 | Scognamillo Salvatore | Spark plug |
| US2208030A (en) * | 1939-11-06 | 1940-07-16 | Holmes Induction Deviees Inc | Spark plug |
| CN101006255A (en) * | 2004-06-24 | 2007-07-25 | 伍德沃德控制器公司 | Pre-chamber spark plug |
| CN103259195A (en) * | 2013-05-03 | 2013-08-21 | 张蝶儿 | Spark plug capable of sparking efficiently |
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| CN203826769U (en) * | 2014-01-29 | 2014-09-10 | 张蝶儿 | Spark plug |
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| CN107819272A (en) * | 2016-09-13 | 2018-03-20 | 日本特殊陶业株式会社 | Spark plug |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015113439A1 (en) | 2015-08-06 |
| CN103746291A (en) | 2014-04-23 |
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