CN201204382Y - Spark plug with a reference electrode and a extension electrode - Google Patents
Spark plug with a reference electrode and a extension electrode Download PDFInfo
- Publication number
- CN201204382Y CN201204382Y CNU2008200011612U CN200820001161U CN201204382Y CN 201204382 Y CN201204382 Y CN 201204382Y CN U2008200011612 U CNU2008200011612 U CN U2008200011612U CN 200820001161 U CN200820001161 U CN 200820001161U CN 201204382 Y CN201204382 Y CN 201204382Y
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- electrode
- spark
- spark plug
- plug
- extension
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Abstract
The utility model relates to a spark plug with a reference electrode and an extension electrode, comprising a plug body, wherein surface of the other end of the plug body has a thread, a center electrode is fixed in the spark plug, the center electrode passes through the spark plug in longitudinal direction, and the reference electrode extends from the thread part of the spark plug; the extension electrode is longer than the reference electrode, and the extension electrode extends to the surface of the thread part of the spark plug. The integrated design and combination of the utility model is simple and reasonable. The spark plug can enhance conduction performance of spark while generate a good deal of spark band, and further enhances whole use efficacy.
Description
Technical field
The utility model can improve the spark conduction of spark plug, and extending plug useful life, particularly spark plug has central electrode and a unnecessary grounding electrode.
Background technology
The unique purpose of spark plug is a fuel oil in the ignition engine, and with generation spark when air contact.Spark passes and is discharged into ground from high voltage by the slit of central electrode and grounding electrode.The spark of Shi Fanging produces slight foreign matter on grounding electrode each time.This foreign matter stops release more than non-foreign matter, and spark subsequently can be followed the track that stops grounding electrode, avoids producing foreign matter.Whole grounding electrode hinders the release of spark because become dirty, shell is damaged and then need and change.
Spark discharges under central electrode; Shorten along with the time, it is short that spark jumps to the distance meeting of central electrode, and grounding electrode can tail off and then make the effect of central point electrode to diminish.Thereby because improved the surface area extending plug life-span of ground electrodes.Fuel in the fuel tank can be with fuel oil and air ratio layering better, injects with fuel and finishes, and the variation of valve time has diversity, can make fuel and oil can reach a desirable ratio.
Summary of the invention
Main purpose of the present utility model provides a kind of spark plug that can produce a large amount of spark bands.
A kind of spark plug with a reference electrode and an extension electrode, comprise cock body, the other end surface of cock body is provided with threaded portion, is provided with a central electrode in the spark cock body, the electrocardio level vertically runs through the spark cock body in described, and reference electrode is extended by the surface of spark-plug thread part; The length of described extension electrode is greater than reference electrode, and described prolongation electrode extends to the surface of spark plug threaded portion.
Also comprise second reference electrode of stretching from spark cock body threaded portion end face.
Also comprise second a prolongation electrode that extends out from spark cock body threaded portion surface.
Also comprise one second reference electrode and one second prolongation electrode of extending out from spark cock body threaded portion surface.
Described central electrode extends to the end of described prolongation electrode.
The utility model provides a kind of spark plug with a reference electrode and an extension electrode, comprises a spark-plug body, is used to be provided with the longitudinal axis that reaches the housing other end from housing one end;
Described central electrode is arranged along the housing longitudinal axis, first spark conduction surfaces is arranged at free end, the free end of central electrode and the head end of housing are contiguous, and the first spark conduction surfaces is on the direction parallel with the central electrode longitudinal axis, to the other end extension of housing; Described reference electrode is provided with the second spark conduction surfaces of contiguous housing head end, and the second spark conduction surfaces radially and between the central electrode first spark conduction surfaces is provided with a segment distance, on the direction parallel with the grounding electrode longitudinal axis, to the other end extension of housing; Described extension electrode is arranged at the 3rd spark conduction surfaces of contiguous housing head end, and the 3rd spark conduction surfaces radially and between the central electrode first spark conduction surfaces is provided with a segment distance, on the direction parallel with the grounding electrode longitudinal axis, to the other end extension of housing.
Comprise that also some sharp edges constitute a surperficial longitudinally elongated area of spark conduction surfaces, each sharp edge is positioned on the plane with the spark-plug body vertical axis tilt.
The first spark conduction surfaces of described central electrode is made up of the cylindrical conductor of a definite radius, and cylindrical conductor is extended to the surface of second end by the spark-plug body top surface; Described each grounding electrode be centered around central electrode around, certain distance is arranged each other; Each grounding electrode is a spark conduction surfaces, and is radial with the surf zone of central electrode and separates.
Described grounding electrode is made up of zigzag projection, is distributed in around the cylindrical side wall of central electrode with a determining deviation in a circumferential direction.
The spark conduction surfaces of described central electrode is provided with some sharp edges.
Described sharp edge is made up of the helicitic texture that is formed on central electrode spark conduction surfaces.
Described sharp edge is made up of the annular knurl that is formed on central electrode spark conduction surfaces.
Described sharp edge is formed on the central electrode spark propagation surface.
Described sharp edge is made up of the annular knurl that is formed on grounding electrode spark conduction surfaces.
The first spark conduction surfaces of described central electrode is made up of the cylindrical conductor of a predetermined radius; Grounding electrode is kept at a certain distance away with each central electrode radial surface by many, and is made up of concentric sidewall, and sidewall is provided with certain oblique angle.
Compared with prior art, the utlity model has following advantage:
The utility model inside is provided with the zigzag design at interval, some sharp edges in the lateral electrode.This sharp edge provides some spark limits for central electrode, thereby improves the quantity on spark limit, enlarges the useful life of piston.The utility model comprises the inclined-plane, sawtooth, screw, concentric ring and then formation lateral electrode.The utility model is provided with a plurality of grounding electrodes and centers on central electrode, so spark can be along one or more vertical area conduction of central electrode.Central electrode also is provided with threaded portion, thereby makes the surface that produces sharp edge can promote the conduction of spark.Owing to the lateral electrode and the grounding electrode of different length are provided, and also are provided with a plurality of sharp edges along the height of central electrode, not only can produce a large amount of spark bands, can also improve the conductive performance of spark, also further improved whole use effect.
Description of drawings
Fig. 1 is two lateral electrode schematic diagrames of the utility model different length;
Fig. 2 is four the lateral electrode schematic diagrames of the positive angle of the utility model than weakness;
Fig. 3 is four the lateral electrode schematic diagrames of the positive angle of the utility model than strong point;
Fig. 4 is top of the present utility model or terminal prolongation schematic diagram;
Fig. 5 is four lateral electrode schematic diagrames of the utility model equal length;
Fig. 6 is two lateral electrode schematic diagrames of the utility model equal length;
Fig. 7 is a plurality of lateral electrode schematic diagrames of each different length of the utility model.
The main element symbol description is as follows:
10 spark plugs, 12 helicitic textures
14 insulators, 16 central electrodes
20 lateral electrodes, 22 essential parts
24 end portion, 30 sawtooth
32 roots 34 prolong electrode
38 structure divisions, 44 sawtooth
54 terminal 56 electrode sawtooth
64 insulators, 66 surfaces
Embodiment
To shown in Figure 7, be three different devices of the present utility model as Fig. 1.Spark plug is provided with four lateral electrodes, and two electrodes of first length and two electrode spark plugs of second length are provided with the lateral electrode of four equal length and the lateral electrode that spark plug is provided with three different lengths.
As shown in Figures 1 to 4.Spark plug 10 comprises 12, one insulators 14 of a helicitic texture and a central electrode 16.Fixedly spark-plug thread structure 12 is outsides of a lateral electrode 20.This lateral electrode is exactly a reference electrode 20.The length of lateral electrode 20 is to end portion 24 by essential part 22.
As shown in Figure 4, the end portion of lateral electrode 20 is provided with sawtooth 30, extends to root 32.These sawtooth 30 are devices of the present utility model, also are the parts of a crepe cord or helix.Sawtooth is parallel to each other or vertical, and parallel with the major avenues of approach of lateral electrode 20.It is similar to lateral electrode 20 to prolong electrode 34, is connected by helicitic texture 12.It is slightly longer than lateral electrode 20 to prolong electrode 34, and the structure division 38 that prolongs electrode 34 is greater than end portion 24.
Spark plug operation as shown in Figures 1 to 4, spark and electric arc are that spark is transmitted to the sawtooth of central electrode by sawtooth one or more on the lateral electrode 30 by spark conductive loop producing between electrode and central electrode on one side.Spark is by at one or more sawtooth, or conduction in the smallest passage of and a plurality of lateral electrodes.Electric arc is to be produced by short lateral electrode.Electric arc produces between long lateral electrode and central electrode.The circuit of electric arc expection is that this paths of least resistance can change the time of crossing between the minimum drag zone of central electrode and lateral electrode.When spark plug overheats because of wearing and tearing or crosses when cold, increase with voltage or when reducing, and in other cases, on the screw thread of lateral electrode or central electrode screw thread or surface can produce some residual substances.
The advantage of spark plug as shown in Fig. 1 to Fig. 4: the utility model is provided with two kinds of electrodes, and a kind of is that the lateral electrode 20 of weak point and two of another kind of length prolong electrode 34.Because near the gas the spark plug tip is prevented from when the less zone of spark plug mobile, thereby has formed an electric arc between spark-plug side electrode and central electrode.In another device, prolonging the length that electrode extends is in top area, this zone be from the end that prolongs electrode to prolonging electrode structure part 38, this apex zone is spiral type or line style.
Fig. 4 to spark plug tip shown in Figure 7 part in line style part and apex zone.The helicitic texture 12 of spark plug is round an insulator 64.Lateral electrode is set to the surface 66 of spark-plug thread structure 12 in the mode of welding.The metal of lateral electrode and spark plug partly links together, and the less part of the metal part of casting or processing spark plug and spark plug connects together.
Fig. 5 is another embodiment schematic diagram of the present utility model.Each lateral electrode 20 all adopts same configuration, compares the length that has increased a serrated surface in the configuration shown in Fig. 1 to Fig. 4.The serrated surface of lateral electrode 20 is from the bottom end of central electrode 16, to the 54 extension coverings of central electrode top end.This is configured in more lateral electrode sawtooth 56 on the lateral electrode.Fig. 6 is the minimum limit of the arc area of spark plug, and this device has two lateral electrodes.In two same lateral electrodes 20, the surface of lateral electrode is equipped with sawtooth, should also be provided with identical sawtooth in the surface in other figure.The sawtooth on lateral electrode surface prolongs to the end of central electrode 16 from the low level of central electrode.The derivation of gas is influenced by lateral electrode and the zone that is opened.
Be provided with three lateral electrodes among Fig. 7.First electrode is a lateral electrode 20, and the electrode of another moderate-length is fixed on surface 66, is arranged at 1/3rd position of surperficial 66 girths, away from lateral electrode 20.In device, it is the longest in three electrodes prolonging electrode 34.It is fixed on the upside on surface 66, is arranged at 1/3rd places of surperficial 66 girths, away from lateral electrode 20, so these three electrodes are around central electrode 16 equipartitions.
Three electrodes shown in Fig. 7, the length of each electrode is all inequality.These equipment produce one roomy has the gas target area, or the fuel oil of an inclination and AIR MIXTURES, and when spark ignitor, the length of spark conduction band is conducted along central electrode.
The spark plug that the utility model provides comprises a spark plug, and a longitudinal axis extends from first end to second opposing ends of shell of shell.The central point electrode is along the longitudinal axis setting of shell, and the end of central electrode is near first end of shell, and the distance of the parallel prolongation of the first spark conduction surfaces extends to second end of shell from the longitudinal axis of central electrode; The second spark conduction surfaces of reference electrode is near first end of shell, the first spark conduction surfaces of the second spark conduction surfaces and central electrode is radial interval, and the segment distance after the extension and the longitudinal axis of grounding electrode are parallel with second end of shell; Prolonging electrode is the 3rd spark conduction surfaces first end near shell, first spark conduction surfaces of the 3rd spark conduction surfaces and central electrode also is radial interval, and the electrode after the prolongation parallels with second end of the longitudinal axis of grounding electrode and shell; The the first, the second and the 3rd spark conduction surfaces is best spark conductive area, and for be arrangeding in parallel, spark is in the end conduction of central electrode.
At other devices with in improving, form by the surf zone longitudinal extension of some sharp edges in the spark conduction surfaces.Each sharp edge is the longitudinal axis of plane inclination to the spark plug cover, and some sharp edges produce some slight cracks along the surface of electrode, and these slight cracks can constantly promote the conduction of spark, make the spark conduction band change the effect of spark plug.The first spark conduction surfaces of central electrode comprises the column type conductor of a predetermined radius, from second terminal extend of top surface to spark-plug shell.Grounding electrode includes many grounding electrodes, and each grounding electrode is separated mutually around central electrode; Each grounding electrode is a spark conduction surfaces, and the concentric surface separately that comprises a surface and central electrode isolates radially.Grounding electrode comprises the zigzag object, and separates around the cylinder side surrounding of central electrode, and some sharp edges are formed by the spark conduction surfaces of central electrode.These sharp edges form linear structure or annular knurl on the spark conduction surfaces of central electrode.In grounding electrode, form linear structure or annular knurl on the spark conduction surfaces of grounding electrode.The first spark conduction surfaces of central electrode comprises the column type conductor of a predetermined radius, the concentricity surface of grounding electrode inwall and central electrode is radial interval, make the surface of the nearest central electrode in many edges of inclined-plane generation, thereby further improve the spark conductive performance.
Comprise the method that improves spark plug performance at the utility model, spark plug is provided with a threaded portion and a surface, reference electrode is prolonged by the surface of spark-plug thread part, makes the prolongation electrode longer than reference electrode, prolongs electrode and extends from the surface of spark plug spiral part.Another of method is presented as that second reference electrode and second prolongs the surface prolongation of electrode from the spark-plug thread part.
More than disclosed only be several specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection range of the present utility model.
Claims (5)
1, a kind of spark plug with a reference electrode and an extension electrode, comprise cock body, the other end surface of cock body is provided with threaded portion, be provided with a central electrode in the spark cock body, it is characterized in that, the electrocardio level vertically runs through the spark cock body in described, and lateral electrode is extended to spark plug threaded portion surface; The length of described extension electrode is greater than reference electrode, and described prolongation electrode extends to the surface of spark plug threaded portion.
2, a kind of spark plug with a reference electrode and an extension electrode as claimed in claim 1 is characterized in that, also comprises second reference electrode of stretching from spark cock body threaded portion end face.
3, a kind of spark plug with a reference electrode and an extension electrode as claimed in claim 1 is characterized in that, also comprises second a prolongation electrode that extends out from spark cock body threaded portion surface.
4, a kind of spark plug with a reference electrode and an extension electrode as claimed in claim 1 is characterized in that, also comprises one second reference electrode and one second prolongation electrode of extending out from spark cock body threaded portion surface.
5, a kind of spark plug with a reference electrode and an extension electrode as claimed in claim 1 is characterized in that described central electrode extends to the end of described prolongation electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200011612U CN201204382Y (en) | 2008-01-17 | 2008-01-17 | Spark plug with a reference electrode and a extension electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200011612U CN201204382Y (en) | 2008-01-17 | 2008-01-17 | Spark plug with a reference electrode and a extension electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204382Y true CN201204382Y (en) | 2009-03-04 |
Family
ID=40426697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200011612U Ceased CN201204382Y (en) | 2008-01-17 | 2008-01-17 | Spark plug with a reference electrode and a extension electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201204382Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103493317A (en) * | 2011-04-25 | 2014-01-01 | 日本特殊陶业株式会社 | Spark plug and production method therefor |
-
2008
- 2008-01-17 CN CNU2008200011612U patent/CN201204382Y/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103493317A (en) * | 2011-04-25 | 2014-01-01 | 日本特殊陶业株式会社 | Spark plug and production method therefor |
| US8981633B2 (en) | 2011-04-25 | 2015-03-17 | Ngk Spark Plug Co., Ltd. | Spark plug and production method therefor |
| CN103493317B (en) * | 2011-04-25 | 2015-06-17 | 日本特殊陶业株式会社 | Spark plug and production method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20100220 |
|
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20110413 Decision number of declaring invalidation: 16322 Granted publication date: 20090304 |