CN2207642Y - Single-polar spark plug - Google Patents
Single-polar spark plug Download PDFInfo
- Publication number
- CN2207642Y CN2207642Y CN 94241082 CN94241082U CN2207642Y CN 2207642 Y CN2207642 Y CN 2207642Y CN 94241082 CN94241082 CN 94241082 CN 94241082 U CN94241082 U CN 94241082U CN 2207642 Y CN2207642 Y CN 2207642Y
- Authority
- CN
- China
- Prior art keywords
- spark plug
- central electrode
- utility
- model
- porcelain core
- 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 - Fee Related
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Abstract
The utility model provides a single-polar spark plug for a gasoline engine. The utility model is composed of an outer housing, a porcelain core and a central electrode; the center electrode is fixed in the porcelain core and the porcelain core is fixed in the outer housing; the central electrode is downward elongated 3 to 30 mm from the end of the outer housing; the ignition process of the single-polar spark plug can be completed by electric spark at the end of the central electrode and the top of a piston. Compared with the present spark plug, the utility model has the advantages of simple structure, low cost, no carbon deposit and long service life.
Description
The utility model relates to a kind of auto parts machinery, specifically a kind of one pole fire plug.At present, the ignition process of existing spark plug of gasoline engine is that the metal shell of spark plug contacts the formation earth terminal with cylinder block, and be central electrode in the insulated ceramic core in metal shell, between the earth electrode of spark plug metal shell and the central electrode certain clearance is arranged, electric spark is lighted combustion gas in the gap.Because fuel is not 100% ground after-flame in combustion process, especially the more whole after-flame of fuel in two-stroke is started, thereby between the electrode gap of spark plug, be easy to generate carbon deposit, the generation carbon deposit can make plug bridging when too much and engine is quit work, the way that solves is to remove carbon deposit or change spark plug, promptly increased the vehicle use cost for this reason, made troubles for the driver again.
The purpose of this utility model provides a kind of not carbon deposit, need not keep in repair, and long service life can improve the single gap plug of engine efficiency.
The purpose of this utility model realizes in the following manner, the electrode that joins with metal shell of existing gasoline motor spark plug is removed, the middle central electrode lengthening of porcelain core will be contained in, its length is as the criterion not brush up against engine piston, its operation principle is that the central electrode of single gap plug and the engine spark circuit of automobile join, the piston tip of engine is an earth electrode, when piston upwards moves compressed gas near top dead centre, the central electrode of single gap plug just forms discharge loop with top land, and combustion gas is lighted in discharge.And the discharge of common spark plug is to carry out between the bipolar electrode on the spark plug.
Figure of description is a structural representation of the present utility model.
Explain below with reference to Figure of description the utility model being done
Its structure of single gap plug of the present utility model is made up of shell (1) porcelain core (2) central electrode (3), central electrode (3) is fixed in the porcelain core (2), porcelain core (2) is fixed in the shell (1), and the lower end of central electrode (3) is extended 3～30mm downwards from the end of shell (1).
Embodiment, the installation of single gap plug of the present utility model is same as the prior art with use, and existing all kinds of engines are not made any changes, and adapts to all kinds petrol engine.During use,, suitably adjust the length of central electrode, the end of central electrode and top land reservation 0.5～0.8mm gap are got final product according to dissimilar engines.
Single gap plug of the present utility model is compared with existing technology to have simple in structurely, be easy to make, and carbon deposit not, the characteristics such as the life-span is long, and versatility is good can be used at all kinds of petrol engines, are the substitute products that have spark plug now, and good popularizing action value is arranged.
Claims (2)
1, single gap plug comprises shell, and porcelain core and central electrode is characterized in that central electrode is fixed in the porcelain core, and porcelain core then is fixed in the shell, and the lower end of central electrode is extended 3～30mm downwards from outer casing end.
2, spark plug according to claim 1 is characterized in that: the shell bottom is flat mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241082 CN2207642Y (en) | 1994-08-09 | 1994-08-09 | Single-polar spark plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241082 CN2207642Y (en) | 1994-08-09 | 1994-08-09 | Single-polar spark plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2207642Y true CN2207642Y (en) | 1995-09-13 |
Family
ID=33847939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94241082 Expired - Fee Related CN2207642Y (en) | 1994-08-09 | 1994-08-09 | Single-polar spark plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2207642Y (en) |
-
1994
- 1994-08-09 CN CN 94241082 patent/CN2207642Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |