CN107508145B - Novel spark plug of engine - Google Patents
Novel spark plug of engine Download PDFInfo
- Publication number
- CN107508145B CN107508145B CN201710797962.8A CN201710797962A CN107508145B CN 107508145 B CN107508145 B CN 107508145B CN 201710797962 A CN201710797962 A CN 201710797962A CN 107508145 B CN107508145 B CN 107508145B
- Authority
- CN
- China
- Prior art keywords
- spark plug
- engine
- shell
- sealing
- cooling liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/06—Covers forming a part of the plug and protecting it against adverse environment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention discloses a novel spark plug of an engine, which comprises a shell, an insulator and a wiring nut, wherein a lining extending towards the insulator and the wiring nut is integrally formed on the outer side wall of the shell, and the lining is used for forming a sealing wall isolated from cooling liquid in a cylinder cover of the engine. The shell of the spark plug is directly provided with the liner to realize the isolation and sealing with the cooling liquid, the occupied space is small, and the sealing is reliable.
Description
Technical Field
The invention relates to the field of engine spark plugs, in particular to a novel engine spark plug.
Background
The engine spark plug is a key part of a spark ignition type engine for igniting combustible mixture, and the sealing of the spark plug and cooling liquid is important for ensuring the normal and reliable operation of the engine. At present, the spark plug is mounted on the cylinder head mainly in two ways, one is directly mounted on the cylinder head, the sealing with the cooling liquid is realized by a cylinder head metal wall which is directly cast, the other is realized by a spark plug sleeve which is mounted on the cylinder head to realize the isolation and sealing with the cooling liquid, and the spark plug is mounted on the spark plug sleeve, for example, the spark plugs disclosed in the Chinese patent with the publication number of CN202756159 and the publication number of CN205921198 are mounted on the spark plug sleeve through threads.
As described above, the conventional spark plug mounting method requires a large mounting space regardless of whether the spark plug sleeve is directly cast on the cylinder head or is mounted later, and affects the peripheral valve arrangement and the shape of the air passage, thereby restricting the improvement of the engine performance and also affecting the flow of the coolant to reduce the reliability of the engine.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a novel spark plug of an engine, which is characterized in that a lining is directly formed on a shell of the spark plug to realize the isolation and the sealing with cooling liquid, the occupied space is small, and the sealing is reliable.
In order to achieve the purpose, the invention provides a novel spark plug of an engine, which comprises a shell, an insulator and a wiring nut, wherein a lining extending towards the insulator and the wiring nut is integrally formed on the outer side wall of the shell, and the lining is used for forming a sealing wall isolated from cooling liquid in a cylinder head of the engine.
Preferably, the length of the bushing exceeds the binding nut.
Preferably, the bushing is integrally formed with the outer side wall of the lower end of the housing.
Preferably, the outer wall of the housing above the lower end has a gap with the bushing.
Compared with the prior art, the invention has the following beneficial effects: the liner is directly formed on the shell of the spark plug to realize the isolation and sealing with the cooling liquid, so that the adverse effect of the installation of the spark plug on the valve arrangement and the air passage shape can be solved, and the performance of the engine is improved. Meanwhile, the spark plug is provided with a bush to reserve a larger space for the flowing of the cooling liquid, so that the reasonable cooling of the nose bridge area of the cylinder cover can be better realized, and the cracking of the cylinder cover is prevented. In addition, the bushing integral with the spark plug also reduces the sealing points, reduces the risk of coolant leakage, and improves reliability.
Drawings
Fig. 1 is a schematic diagram of a novel spark plug of an engine according to the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, a novel spark plug for an engine according to an embodiment of the present invention includes a shell 13, an insulator 12 and a terminal nut 11, and is characterized in that a bushing 2 extending toward the insulator 12 and the terminal nut 11 is integrally formed on an outer side wall of the shell 13, and the bushing 2 is used to form a sealing wall for isolating a coolant in a cylinder head of the engine.
In the above-described configuration, by redesigning the casing of a general spark plug, the bush 2 extending in the direction of the insulator 12 and the terminal nut 11 is integrally formed on the outer side wall of the casing 13, and the casing 13 and the bush 2 may be formed by casting, machining, or the like, or may be formed by welding a bush to the casing of an existing spark plug, and further, as a spark plug, the spark plug further includes the threaded portion 14 and the side electrode 15 connected to the casing 13. By directly forming the lining 2 on the shell 13, the isolation and the sealing between the lining and the cooling liquid are realized, the advantages of small occupied space and reliable sealing are achieved, the adverse effect of the installation of the spark plug on the arrangement of the air valve and the shape of the air passage can be solved, and the performance of the engine is improved. Meanwhile, the spark plug is provided with a bush to reserve a larger space for the flowing of the cooling liquid, so that the reasonable cooling of the nose bridge area of the cylinder cover can be better realized, and the cracking of the cylinder cover is prevented. In addition, the bushing integral with the spark plug also reduces the sealing points, reduces the risk of coolant leakage, and improves reliability.
As a preferred embodiment, the length of the bushing 2 exceeds the binding nut 11.
As a preferred embodiment, the bushing 2 is integrally formed with the outer side wall of the lower end of the housing 13.
As a preferred embodiment, there is a gap 21 between the outer wall of the housing 13 above the lower end and the liner 2.
In conclusion, the novel engine spark plug of the embodiment has the advantages that the lining 2 extending towards the direction of the insulator 12 and the direction of the wiring nut 11 is integrally formed on the outer side wall of the shell 13, the lining directly formed on the shell can be isolated and sealed from cooling liquid, the occupied space is small, the sealing is reliable, the adverse effect of the installation of the spark plug on valve arrangement and air passage shape can be avoided, and the performance of an engine is improved. Meanwhile, the spark plug is provided with a bush to reserve a larger space for the flowing of the cooling liquid, so that the reasonable cooling of the nose bridge area of the cylinder cover can be better realized, and the cracking of the cylinder cover is prevented. In addition, the bushing integral with the spark plug also reduces the sealing points, reduces the risk of coolant leakage, and improves reliability.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (2)
1. The novel spark plug of the engine comprises a shell, an insulator and a wiring nut, and is characterized in that a bush extending towards the insulator and the wiring nut is integrally formed on the outer side wall of the shell, and the bush is used for forming a sealing wall isolated from cooling liquid in a cylinder head of the engine; the length of the bush exceeds the wiring nut, and the bush and the outer side wall of the lower end of the shell are integrally formed.
2. The engine new spark plug as set forth in claim 1, wherein a gap is provided between an outer wall of said shell above the lower end and said bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710797962.8A CN107508145B (en) | 2017-09-06 | 2017-09-06 | Novel spark plug of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710797962.8A CN107508145B (en) | 2017-09-06 | 2017-09-06 | Novel spark plug of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107508145A CN107508145A (en) | 2017-12-22 |
| CN107508145B true CN107508145B (en) | 2023-03-24 |
Family
ID=60695069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710797962.8A Active CN107508145B (en) | 2017-09-06 | 2017-09-06 | Novel spark plug of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107508145B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886587B (en) * | 2010-07-15 | 2012-07-11 | 东风汽车有限公司 | Spark plug sealing structure |
| CN202756159U (en) * | 2012-08-15 | 2013-02-27 | 潍柴动力西港新能源发动机有限公司 | Natural gas engine spark plug lining |
| CN204357576U (en) * | 2015-01-05 | 2015-05-27 | 重庆科克发动机技术有限公司 | A kind of sealing configuration of spark plug |
| CN105298675A (en) * | 2015-12-07 | 2016-02-03 | 潍柴动力股份有限公司 | Engine and cylinder cover thereof |
-
2017
- 2017-09-06 CN CN201710797962.8A patent/CN107508145B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107508145A (en) | 2017-12-22 |
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