CN108023276B - Spark plug - Google Patents
Spark plug Download PDFInfo
- Publication number
- CN108023276B CN108023276B CN201710943490.2A CN201710943490A CN108023276B CN 108023276 B CN108023276 B CN 108023276B CN 201710943490 A CN201710943490 A CN 201710943490A CN 108023276 B CN108023276 B CN 108023276B
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- CN
- China
- Prior art keywords
- spark plug
- insulation assembly
- central
- insulator
- plug shell
- 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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- 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
-
- 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
- H01T13/34—Sparking plugs characterised by features of the electrodes or insulation characterised by the mounting of electrodes in insulation, e.g. by embedding
Abstract
The invention discloses a spark plug, comprising: the spark plug shell is fixedly connected with the insulation assembly, and the central electrode is coated in the insulation assembly; a hollow cavity is formed in the shell of the spark plug, the tip end of an insulator of the insulation assembly is arranged in the hollow cavity, the tip end of the insulator is provided with an ignition end part, and the central electrode is connected with the ignition end part; the middle part of the end face of the other side of the spark plug shell, which is opposite to the insulation assembly, is provided with a central hole with the function of a one-way valve; the outer edge of the end face of the other side of the spark plug shell, which is opposite to the insulation assembly, is provided with an exhaust hole communicated with the hollow cavity. The invention forms the hole-shaped electrode through the central hole, and simultaneously has the function of a one-way valve, and can allow air to pass and prevent flame from passing. The present invention enables the firing end to be as short as possible from the exhaust port by using a longer insulator tip to bring the firing end as close as possible to the central bore.
Description
Technical Field
The invention relates to the technical field of internal combustion engine, in particular to a spark plug.
Background
It is well known to use a spark plug to ignite an air and fuel mixture in the combustion chamber of a spark-ignition engine. The performance of the spark plug can directly affect the performance of the engine; if the spark plug incorrectly ignites the air and fuel mixture located in the combustion chamber, there will be at least partially unburned fuel, resulting in a loss of power, reduced fuel efficiency, and increased hydrocarbon emissions.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a spark plug.
In order to achieve the purpose, the invention adopts the technical scheme that:
a spark plug comprising a spark plug shell, an insulator assembly, and a center electrode, wherein: the spark plug shell is fixedly connected with the insulation assembly, and the center electrode is coated in the insulation assembly; a hollow cavity is formed in the spark plug shell, the tip end of an insulator of the insulation assembly is arranged in the hollow cavity, an ignition end part is arranged on the tip end of the insulator, and the central electrode is connected with the ignition end part; the middle part of the end surface of the other side of the spark plug shell, which is opposite to the insulation assembly, is provided with a central hole with a one-way valve function; and the outer edge of the end surface of the spark plug shell, which is opposite to the other side of the insulation assembly, is provided with an exhaust hole communicated with the hollow cavity.
In the spark plug, the outer edge of the end face is provided with the plurality of exhaust holes, and the plurality of exhaust holes are uniformly distributed along the outer edge of the end face.
In the above spark plug, the central hole is formed in the middle of the end surface, and the central holes correspond to the ignition end.
In the spark plug, an annular inclined step surface is formed on the outer edge of the end surface of the spark plug housing.
In the spark plug, the exhaust holes are formed in the inclined table surface.
In the spark plug, each of the central holes has a diameter of 0.8 to 1.0 mm.
The spark plug described above, wherein the distance from the ignition end portion to the end face is 0.8 to 1.5 mm.
In the spark plug, a threaded portion is formed on the spark plug shell, and a hexagonal nut portion is formed on one side, close to the insulation assembly, of the spark plug shell.
In the spark plug, the insulation assembly has a tail portion for receiving an ignition wire, and the ignition wire is connected to the center electrode.
Due to the adoption of the technology, compared with the prior art, the invention has the following positive effects:
(1) the invention forms the hole-shaped electrode through the central hole, and simultaneously has the function of a one-way valve, and can allow air to pass and prevent flame from passing.
(2) The present invention enables the firing end to be as short as possible from the exhaust port by using a longer insulator tip to bring the firing end as close as possible to the central bore.
Drawings
Fig. 1 is a partial cross-sectional view of a spark plug of the present invention.
Fig. 2 is a partial cross-sectional view of a first embodiment of the spark plug of the present invention.
Fig. 3 is a plan view of a first embodiment of the spark plug of the present invention.
Fig. 4 is a partial plan view of a second embodiment of the spark plug of the present invention.
Fig. 5 is a plan view of a second embodiment of the spark plug of the present invention.
Fig. 6 is a plan view of a spark plug according to a third embodiment of the present invention.
In the drawings: 1. a spark plug housing; 11. a hollow cavity; 12. a central bore; 13. an exhaust hole; 14. a threaded portion; 15. a hexagonal nut portion; 16. an inclined table top; 2. an insulation assembly; 21. an insulator tip; 22. an ignition end portion; 23. and a tail portion.
Detailed Description
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The first embodiment:
fig. 1 is a partial sectional view of a spark plug of the present invention, fig. 2 is a partial sectional view of a first embodiment of the spark plug of the present invention, and fig. 3 is a plan view of the first embodiment of the spark plug of the present invention. Referring to fig. 1 to 3, there is shown a spark plug of a preferred embodiment, comprising: a spark plug shell 1, an insulation assembly 2 and a center electrode (not shown in the figure), wherein the spark plug shell 1 is fixedly connected with the insulation assembly 2, and the center electrode is wrapped in the insulation assembly 2. A hollow cavity 11 is formed in the spark plug shell 1, an insulator tip 21 of the insulation assembly 2 is arranged in the hollow cavity 11, an ignition end portion 22 is arranged on the insulator tip 21, and the center electrode is connected with the ignition end portion 22.
In addition, as a preferred embodiment, the spark plug housing 1 has a central hole 12 with a check valve function formed in the middle of the end surface on the other side with respect to the insulator assembly 2. The diameter of the central bore 12 is as small as possible to satisfy the one-way valve action of gas passing but flame not. The diameter of the central hole 12 is preferably 0.8 to 1.0 mm.
In addition, as a preferred embodiment, the outer edge of the end surface of the spark plug shell 1 opposite to the other side of the insulation assembly 2 is provided with an exhaust hole 13 communicated with the hollow cavity 11. The diameter of the exhaust holes 13 is such that it is sufficient for both gas and flame to pass through.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope and the implementation manner of the present invention.
The present invention also has the following embodiments in addition to the above:
in a further embodiment of the present invention, the outer edge of the end surface of the spark plug shell 1 opposite to the insulation assembly 2 is provided with a plurality of exhaust holes 13, the plurality of exhaust holes 13 are uniformly distributed along the outer edge of the end surface, and the number and the diameter of the exhaust holes 13 can be set according to specific situations. Preferably, the diameter of the vent hole 13 is 2.5 mm.
In a further embodiment of the invention, the spark plug housing 1 is provided with a threaded portion 14, and the side of the spark plug housing 1 adjacent to the insulator assembly 2 is provided with a hexagonal nut portion 15. The hexagonal nut portion 15 is fitted with a wrench so that the spark plug housing 1 is screwed to the cylinder head by the screw portion 14.
In a further embodiment of the invention, the dielectric assembly 2 has a tail portion 23 for receiving an ignition wire (not shown) which is connected to the center electrode.
In a further embodiment of the present invention, each central hole 12 has a diameter of 0.8 to 1.0 mm.
In a further embodiment of the invention, the distance from the ignition end 22 to the inner wall of the end face is 0.8-1.5 mm. The distance from the ignition end 22 to the inner wall of the end face should be as short as possible, so that the distance from the upper end of the ignition end 22 to the exhaust hole 13 is as short as possible, thereby enabling the flame to have a stroke as short as possible to improve the efficiency of ignition.
In a further embodiment of the invention, the lower diameter of the firing end 22 is 2.5mm and the upper diameter of the firing end 22 is 1.5 mm.
Second embodiment:
fig. 4 is a partial plan view of a second embodiment of the spark plug of the present invention, fig. 5 is a plan view of the second embodiment of the spark plug of the present invention, and referring to fig. 4 and 5, a preferred embodiment of the spark plug is shown, including: a spark plug shell 1, an insulation assembly 2 and a center electrode (not shown in the figure), wherein the spark plug shell 1 is fixedly connected with the insulation assembly 2, and the center electrode is wrapped in the insulation assembly 2. A hollow cavity 11 is formed in the spark plug shell 1, an insulator tip 21 of the insulation assembly 2 is arranged in the hollow cavity 11, an ignition end portion 22 is arranged on the insulator tip 21, and the center electrode is connected with the ignition end portion 22.
In addition, as a preferred embodiment, the spark plug housing 1 has a central hole 12 with a check valve function formed in the middle of the end surface on the other side with respect to the insulator assembly 2. The diameter of the central bore 12 is as small as possible to satisfy the one-way valve action of gas passing but flame not. The diameter of the central hole 12 is preferably 0.8 to 1.0 mm.
In addition, as a preferred embodiment, the spark plug shell 1 is formed with an annular inclined table surface 16 along the outer edge of the end surface, a plurality of exhaust holes 13 are opened on the inclined table surface 16, and a plurality of exhaust holes 13 are uniformly distributed along the periphery of the inclined table surface 16. The diameter of the exhaust holes 13 is such that it is sufficient for both gas and flame to pass through.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope and the implementation manner of the present invention.
The present invention also has the following embodiments in addition to the above:
in a further embodiment of the present invention, the axis of each exhaust hole 13 is perpendicular to the inclined table surface 16, so that each exhaust hole 13 is formed in an inclined structure with respect to the spark plug, thereby making the distance from the ignition end 22 to the outside of the spark plug housing 1 through the exhaust hole 13 as short as possible, and improving the ignition efficiency of the spark plug.
The third embodiment:
FIG. 6 is a top view of a third embodiment of the spark plug of the present invention, shown in FIG. 6, showing a preferred embodiment of the spark plug wherein the spark plug shell 1, insulator assembly 2 and center electrode are arranged the same as in the first embodiment, except that: the middle part of the end face of the other side of the spark plug shell 1 relative to the insulation assembly 2 is provided with a plurality of central holes 12, the positions of the central holes 12 correspond to the positions of the ignition end parts, and the number of the central holes 12 can be set according to specific conditions.
In addition, as a preferred embodiment, the central holes 12 are arranged in an array of rings, circles, etc. at the middle of the end surface. The diameter of the central bore 12 is as small as possible to satisfy the one-way valve action of gas passing but flame not.
The fourth embodiment:
the spark plug housing 1, the insulating assembly 2, and the center electrode are arranged as in the second embodiment, except that: the middle part of the end face of the other side of the spark plug shell 1 relative to the insulation assembly 2 is provided with a plurality of central holes 12, the positions of the central holes 12 correspond to the positions of the ignition end parts, and the number of the central holes 12 can be set according to specific conditions.
In addition, as a preferred embodiment, the central holes 12 are arranged in an array of rings, circles, etc. at the middle of the end surface. The diameter of the central bore 12 is as small as possible to satisfy the one-way valve action of gas passing but flame not.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. A spark plug comprising a spark plug shell, an insulator assembly, and a center electrode, wherein:
the spark plug shell is fixedly connected with the insulation assembly, and the center electrode is coated in the insulation assembly;
a hollow cavity is formed in the spark plug shell, the tip end of an insulator of the insulation assembly is arranged in the hollow cavity, an ignition end part is arranged on the tip end of the insulator, and the central electrode is connected with the ignition end part;
the middle part of the end surface of the other side of the spark plug shell, which is opposite to the insulation assembly, is provided with a central hole with a one-way valve function;
the outer edge of the end face of the other side of the spark plug shell, which is opposite to the insulation assembly, is provided with an exhaust hole communicated with the hollow cavity;
the spark plug shell is provided with an annular inclined table surface along the outer edge of the end surface;
the exhaust holes are formed in the inclined table top;
the axis of each exhaust hole is vertical to the inclined table surface;
the middle part of the end face is provided with a plurality of central holes, and the positions of the central holes correspond to the positions of the ignition end parts.
2. The spark plug of claim 1 wherein said end surface has a plurality of said exhaust holes formed in an outer edge thereof, said plurality of said exhaust holes being evenly distributed along said outer edge of said end surface.
3. The spark plug of claim 1 wherein each of said central bores has a diameter of 0.8 to 1.0 mm.
4. The spark plug of claim 1 wherein said firing end is spaced from said end face by a distance of 0.8 to 1.5 mm.
5. The spark plug of claim 1 wherein said spark plug shell has a threaded portion and a hexagonal nut portion on a side of said spark plug shell adjacent said insulator assembly.
6. The spark plug of claim 1 wherein said insulator assembly has a tail portion for receiving a firing wire, said firing wire being connected to said center electrode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762542549P | 2017-08-08 | 2017-08-08 | |
| US62/542,549 | 2017-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108023276A CN108023276A (en) | 2018-05-11 |
| CN108023276B true CN108023276B (en) | 2020-04-28 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710943490.2A Active CN108023276B (en) | 2017-08-08 | 2017-10-11 | Spark plug |
| CN201721307831.9U Active CN207490303U (en) | 2017-08-08 | 2017-10-11 | A kind of spark plug |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721307831.9U Active CN207490303U (en) | 2017-08-08 | 2017-10-11 | A kind of spark plug |
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| Country | Link |
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| CN (2) | CN108023276B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023276B (en) * | 2017-08-08 | 2020-04-28 | 应用太空科技有限公司 | Spark plug |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683595A (en) * | 1993-09-06 | 2005-10-19 | 氢技术有限公司 | Electrolytic bath device for electrolytic water |
| CN103125056A (en) * | 2010-07-22 | 2013-05-29 | 奥利克桑德尔·伯曼科 | Spark plug |
| CN103422970A (en) * | 2013-07-17 | 2013-12-04 | 广州柴油机厂股份有限公司 | Ignition device of gas engine utilizing precombustion chamber |
| CN104426057A (en) * | 2013-08-21 | 2015-03-18 | 张蝶儿 | Spark plug, and ignition system of internal combustion engine using same |
| CN104421091A (en) * | 2013-08-21 | 2015-03-18 | 张蝶儿 | Ignition system of internal combustion engine and method for installing spark plug in combustion chamber |
| CN207490303U (en) * | 2017-08-08 | 2018-06-12 | 应用太空科技有限公司 | A kind of spark plug |
-
2017
- 2017-10-11 CN CN201710943490.2A patent/CN108023276B/en active Active
- 2017-10-11 CN CN201721307831.9U patent/CN207490303U/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683595A (en) * | 1993-09-06 | 2005-10-19 | 氢技术有限公司 | Electrolytic bath device for electrolytic water |
| CN103125056A (en) * | 2010-07-22 | 2013-05-29 | 奥利克桑德尔·伯曼科 | Spark plug |
| CN103422970A (en) * | 2013-07-17 | 2013-12-04 | 广州柴油机厂股份有限公司 | Ignition device of gas engine utilizing precombustion chamber |
| CN104426057A (en) * | 2013-08-21 | 2015-03-18 | 张蝶儿 | Spark plug, and ignition system of internal combustion engine using same |
| CN104421091A (en) * | 2013-08-21 | 2015-03-18 | 张蝶儿 | Ignition system of internal combustion engine and method for installing spark plug in combustion chamber |
| CN207490303U (en) * | 2017-08-08 | 2018-06-12 | 应用太空科技有限公司 | A kind of spark plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN207490303U (en) | 2018-06-12 |
| CN108023276A (en) | 2018-05-11 |
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