CN203747242U - Sparking plug - Google Patents
Sparking plug Download PDFInfo
- Publication number
- CN203747242U CN203747242U CN201420103357.8U CN201420103357U CN203747242U CN 203747242 U CN203747242 U CN 203747242U CN 201420103357 U CN201420103357 U CN 201420103357U CN 203747242 U CN203747242 U CN 203747242U
- Authority
- CN
- China
- Prior art keywords
- ignition part
- central electrode
- electrode
- insulator
- grounding electrode
- 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.)
- Expired - Lifetime
Links
- 239000012212 insulator Substances 0.000 claims abstract description 26
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000011109 contamination Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Abstract
The utility model discloses a sparking plug which comprises a central electrode and a grounding electrode. The central electrode is coated with an insulator; the head and tail ends of the central electrode penetrate from the insulator; the insulator is fixedly sheathed with a connecting part; the grounding electrode is fixed to the connecting part; the front end of the central electrode forms a central electrode ignition part in a cone structure; a taper of the central electrode ignition part is 1:5; the front end of the central electrode is fixedly provided with a sheath in a cylindrical structure which circles around the central electrode ignition part; the grounding electrode is provided with a grounding electrode ignition part corresponding to the central electrode ignition part; the grounding electrode ignition part is a cone structure, and the grounding electrode ignition part and the central electrode ignition part are coaxially arranged; and an ignition gap is arranged between the grounding electrode ignition part and the central electrode ignition part. The sparking plug can improve the performance of the sparking plug, and can effectively prevent the dirt phenomenon of the ignition point of the central electrode and the side electrode.
Description
Technical field
The utility model relates to a kind of engine components, relates in particular to a kind of spark plug.
Background technology
Spark plug is a kind of ignition installation for gasoline engine cylinder, its operation principle is high voltage pulse discharge breakdown central electrode by high-voltage conducting wires is sent here and to the air between ground electrode, produce electric spark to light the mist in cylinder, the performance of spark plug directly has influence on the overall performance of engine.
Spark plug must make to produce good spark between central electrode and grounding electrode in official hour, make combustion particles activate by spark, produce chemical reaction, there is thermal effect, and finally form flame core, and flame core has middle mind-set periphery, but the central electrode of spark plug must keep certain ignition gap could produce electric spark, and flame core results between ignition gap, and flame core is larger, mist can be lighted at short notice, but ignition gap can not be too wide, otherwise can not make the air between central electrode and grounding electrode carry out discharge breakdown, because electrode is made of metal, can absorb heat at ignition point, produce " anti-inflammatory effect (effect that electrode heat absorption is eliminated flame) " and cause stopping working, have a strong impact on the performance of engine, and carbon distribution, long-pending wet goods polluter usually appear in the central electrode of existing spark plug and grounding electrode, and these materials have a strong impact on the ignition performance of spark plug.
Therefore, a kind of novel spark plug need to be proposed, when can making central electrode and grounding electrode keep suitable ignition gap, and the flame nuclear energy that can produce at ignition point expands to periphery enough smoothly, can effectively avoid, due to the electrode antiinflammation producing of absorbing heat, promoting the performance of spark plug; And there is contamination phenomenon in the ignition point that can effectively prevent central electrode and lateral electrode, further promotes the performance of spark plug.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of spark plug, when can making central electrode and grounding electrode keep suitable ignition gap, and the flame nuclear energy that can produce at ignition point expands to periphery enough smoothly, can effectively avoid, due to the electrode antiinflammation producing of absorbing heat, promoting the performance of spark plug; And there is contamination phenomenon in the ignition point that can effectively prevent central electrode and lateral electrode, further promotes the performance of spark plug.
Spark plug of the present utility model, comprise central electrode and grounding electrode, described central electrode is surrounded by insulator outward, the head and the tail two ends of described central electrode all pass from insulator, the fixed jacket of described insulator has connecting portion, described grounding electrode is fixedly connected with connecting portion, the front end end of described central electrode forms the central electrode ignition part of frustum structure, and the tapering of central electrode ignition part is 1:5, the front end end of described central electrode be fixedly installed by central electrode ignition part around the sheath of tubular structure, described grounding electrode is provided with grounding electrode ignition part corresponding to central electrode ignition part, described grounding electrode ignition part is coaxially arranging with central electrode ignition part of frustum structure and grounding electrode ignition part, between grounding electrode ignition part and central electrode ignition part, there is ignition gap.
Further, the axial height of described sheath is less than the height of described central electrode ignition part.
Further, the top end face of described grounding electrode ignition part is that top end face and the conical surface of spherical structure and ignition part seamlessly transits.
Further, the radius of curvature of the top sphere of described grounding electrode ignition part is greater than the diameter of described grounding electrode ignition part top end.
Further, the front end end of described insulator is provided with the protection portion for the protection of central electrode front end end.
Further, the front end end lateral wall that described protection portion is insulator radially outwardly convex forms the edge of a wing, and this edge of a wing is to the tail end bending of insulator and coordinates the cannelure of formation with insulator front end lateral wall.
The beneficial effects of the utility model: spark plug of the present utility model, when can making central electrode and grounding electrode keep suitable ignition gap, and the flame nuclear energy that can produce at ignition point expands to periphery enough smoothly, can effectively avoid, due to the electrode antiinflammation producing of absorbing heat, promoting the performance of spark plug; And there is contamination phenomenon in the ignition point that can effectively prevent central electrode and lateral electrode, further promotes the performance of spark plug.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model, as shown in the figure, comprise central electrode 1 and grounding electrode 6, the outer insulator 2 that is surrounded by of described central electrode 1, the head and the tail two ends of described central electrode 1 all pass from insulator 2, the fixed jacket of described insulator 2 has connecting portion 3, be convenient to spark plug to be fixed connection, and the axial length of insulator 2 is greater than the axial length of described connecting portion 3, described grounding electrode 6 is fixedly connected with connecting portion 3, the front end end of described central electrode 1 forms the central electrode ignition part 8 of frustum structure, and the tapering of central electrode ignition part 8 is 1:5, the tapering of this ratio, make the ignition point of central electrode ignition part more concentrated, ensure that spark plug can produce enough centralized high voltage and perforation ignition gap generation spark in moment, the front end end of described central electrode 1 be fixedly installed by central electrode ignition part 8 around the sheath 9 of tubular structure, described grounding electrode 6 is provided with grounding electrode ignition part 7 corresponding to central electrode ignition part 8, described grounding electrode ignition part 7 is coaxially arranging with central electrode ignition part 8 of frustum structure and grounding electrode ignition part 7, between grounding electrode ignition part 7 and central electrode ignition part 8, there is ignition gap, pass through said structure, on the one hand, by central electrode ignition part and the grounding electrode ignition part of pyramidal structure, ensure that central electrode and grounding electrode have suitable ignition gap on the one hand, guarantee point fire performance, and can flame nuclear energy be expanded enough smoothly at ignition point, effectively reduce the caloric receptivity of electrode, mist was lighted in the short time, thereby ensure the performance of engine, and effectively reduce the fuel consumption of engine, by the sheath of central electrode, can effectively prevent the carbon distribution of central electrode ignition part and extremely oil (being contamination), thereby ensure the cleanliness factor of central electrode, ensure the ignition performance of spark plug, and then ensure the performance of engine and reduce oil consumption, evidence, by the spark plug of said structure, can make the fuel consumption of engine reduce more than 2%, and the performance of engine is more stable.
In the present embodiment, the axial height of described sheath 9 is less than the height of described central electrode ignition part 8, and the height of sheath 9 is far smaller than the height of central electrode ignition part 8, by this structure, can effectively prevent that dirt (comprising the metal particle of the parts generations such as oil, carbon and piston etc.) is deposited on central electrode ignition part, greatly reduce the contamination amount of central electrode ignition part, thereby promoted the performance of spark plug.
In the present embodiment, the top end face of described grounding electrode ignition part 7 is that top end face and the conical surface of spherical structure and grounding electrode ignition part 7 seamlessly transits, by this structure, can ensure on the one hand between ground connection motor and central electrode, to there is suitable ignition gap, and the central point of the end face of grounding electrode ignition part increases gradually to the distance of the front end end face of edge bearing of trend and central electrode ignition part, because of and make to have between central electrode and grounding electrode enough gaps spark core increased, thereby the performance of spark plug effectively improves, and spherical structure can prevent that greasy dirt is deposited on the igniting end face of grounding electrode ignition part, guarantee point fire performance.
In the present embodiment, the radius of curvature of the top sphere of described grounding electrode ignition part 7 is greater than the diameter of described grounding electrode ignition part 7 top ends, by this structure, the end face of grounding electrode ignition part is slowly increased to the distance of margin and center electrode ignition end surface by central point, make ground connection motor ignition part and central electrode ignition part there is enough machining areas, can make again greasy dirt, carbon dirt can not be deposited on grounding electrode ignition part end face and (have in time deposition, also be minute quantity), thereby the performance of guarantee spark plug.
In the present embodiment, the front end end of described insulator 2 is provided with the protection portion for the protection of central electrode 1 front end end, described protection portion be insulator 2 front end end lateral wall radially outwardly convex form the edge of a wing 5, and this edge of a wing 5 bends and coordinates with insulator 2 front end lateral walls the cannelure 4 of formation to the tail end of insulator 2, because spark plug is all generally the direction setting of head end towards piston, it is the downward or oblique lower setting of head end, pass through said structure, can effectively avoid greasy dirt, carbon dirt carries over insulator and slides to central electrode ignition part and cause deposition, together with sheath, central electrode ignition part is effectively protected, greatly strengthen the ignition performance of spark plug.
Head end tail end in above-mentioned refers to that one end that central electrode is connected with ignition coil is tail end, and the other end is head end, namely firing tip.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (6)
1. a spark plug, comprise central electrode and grounding electrode, described central electrode is surrounded by insulator outward, the head and the tail two ends of described central electrode all pass from insulator, the fixed jacket of described insulator has connecting portion, described grounding electrode is fixedly connected with connecting portion, it is characterized in that: the front end end of described central electrode forms the central electrode ignition part of frustum structure, and the tapering of central electrode ignition part is 1:5, the front end end of described central electrode be fixedly installed by central electrode ignition part around the sheath of tubular structure, described grounding electrode is provided with grounding electrode ignition part corresponding to central electrode ignition part, described grounding electrode ignition part is coaxially arranging with central electrode ignition part of frustum structure and grounding electrode ignition part, between grounding electrode ignition part and central electrode ignition part, there is ignition gap.
2. spark plug according to claim 1, is characterized in that: the axial height of described sheath is less than the height of described central electrode ignition part.
3. spark plug according to claim 2, is characterized in that: the top end face of described grounding electrode ignition part is that top end face and the conical surface of spherical structure and ignition part seamlessly transits.
4. spark plug according to claim 3, is characterized in that: the radius of curvature of the top sphere of described grounding electrode ignition part is greater than the diameter of described grounding electrode ignition part top end.
5. spark plug according to claim 4, is characterized in that: the front end end of described insulator is provided with the protection portion for the protection of central electrode front end end.
6. spark plug according to claim 5, is characterized in that: the front end end lateral wall that described protection portion is insulator radially outwardly convex forms the edge of a wing, and this edge of a wing is to the tail end bending of insulator and coordinates the cannelure of formation with insulator front end lateral wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420103357.8U CN203747242U (en) | 2014-03-07 | 2014-03-07 | Sparking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420103357.8U CN203747242U (en) | 2014-03-07 | 2014-03-07 | Sparking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747242U true CN203747242U (en) | 2014-07-30 |
Family
ID=51347001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420103357.8U Expired - Lifetime CN203747242U (en) | 2014-03-07 | 2014-03-07 | Sparking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203747242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111370999A (en) * | 2020-02-26 | 2020-07-03 | 上海交通大学 | Spark plug with double umbrella-shaped electrodes |
-
2014
- 2014-03-07 CN CN201420103357.8U patent/CN203747242U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111370999A (en) * | 2020-02-26 | 2020-07-03 | 上海交通大学 | Spark plug with double umbrella-shaped electrodes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190411 Address after: 400700 Xinmao Road, Beibei District, Beibei District, Chongqing (free trade area) Patentee after: Chongqing Kaipu Jibao Power Machinery Co.,Ltd. Address before: 400707 No. 6 Fengqi Road, Caijiagang Town, Beibei District, Chongqing Patentee before: CHONGQING KAIBAO POWER MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |