CN1235398A - Durable spark plug - Google Patents
Durable spark plug Download PDFInfo
- Publication number
- CN1235398A CN1235398A CN 98110830 CN98110830A CN1235398A CN 1235398 A CN1235398 A CN 1235398A CN 98110830 CN98110830 CN 98110830 CN 98110830 A CN98110830 A CN 98110830A CN 1235398 A CN1235398 A CN 1235398A
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- spark plug
- grounding electrode
- housing
- durable
- electrode
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Abstract
A strong spark plug with long service life for IC engine is composed of screw bolt, nut, insulator, casing, lower grounding electrode and central elecrode electrically connected to screw bolt. A ring-shaped spark gap is formed between annular grounding electrode and the end of central electrode. Its advantages are high igniting intensity, long service life and saving oil by 5-12%.
Description
The present invention relates to the spark plug that a kind of internal combustion engine is used, particularly a kind of durable spark plug.
In the prior art, the spark plug used of internal combustion engine generally is made of screw rod, nut, insulator, housing, grounding electrode and central electrode.Its grounding electrode generally is single the clubfoot that is welded in the housing lower end, and its igniting dynamics is not strong.Have for hard point firepower degree, then grounding electrode is three clubfoots, though improvement has been arranged than single clubfoot, but the gap that the electric spark clearance that forms between the end face of clubfoot and central electrode is still a little and forms between the face, limit its igniting dynamics, cause in the cylinder vaporific gasoline fully not burn and oil consumption is higher and the exhaust pollution environment is more serious.As the clubfoot of grounding electrode and housing welding, occur the scaling loss distortion easily or fracture and influence useful life of spark plug.
The object of the present invention is to provide a kind of durable spark plug, improve the igniting dynamics and reduce engine oil consumption rate and exhaust pollution, improve the useful life of spark plug simultaneously.
For achieving the above object, the present invention adopts following technical proposals: the same grounding electrode of screw rod, nut, insulator, housing and lower end thereof and the central electrode that is electrically connected with screw rod of including with prior art of the present invention.It is characterized in that grounding electrode be annular solid and and form the annular electro spark gap between the end of central electrode.When igniting, produce a large amount of electric sparks in the annular electro spark gap, thereby improve the igniting dynamics greatly, engine start is fast, and oil consumption rate is low, and exhaust pollution is low.
The structure that forms the annular electro spark gap between grounding electrode and the central electrode can be designed to: the central electrode end is arranged in housing lower end grounding electrode inner chamber, forms the annular electro spark gap of axially open between the two.During igniting, along circumferential distribution radial emission electric spark.Also can be designed to: central electrode stretches out housing lower end grounding electrode, and end has round flange, forms the annular electro spark gap of radial opening between the end face of round flange inner face and housing lower end grounding electrode.During igniting, along the axially emission electric spark that circumferentially distributes.Described round flange can spin by welding or screw thread and be fixedly connected on the central electrode.The round flange material can be selected the corrosion-resistant and high-temperature resistant nickel alloy for use.
Between the insulator of spark plug annular electro spark gap of the present invention top and the housing one section toroidal cavity can be arranged, circumferential uniform 3～12 through holes of grounding electrode are connected toroidal cavity.Then in use, during gas compression, gas and fogging oil enter toroidal cavity from the through hole on annular electro spark gap and the grounding electrode in the cylinder; Igniting back detonation, then combustion gas sprays by the through hole on annular electro spark gap and the grounding electrode from toroidal cavity.Because the turnover of gas is washed away, prevent annular electro spark gap carbon deposit on every side, but the useful life of extending plug.
The grounding electrode of spark plug of the present invention can be designed to make one with housing.Also can be designed to grounding electrode and spin, so that regularly pull down cleaning carbon deposit or replacing by screw thread and housing.Ground electrode materials can be selected the corrosion-resistant and high-temperature resistant alloy for use.
Between the screw rod of spark plug of the present invention and the central electrode permanent magnet can be housed.Then form field of magnetic forece around the annular electro spark gap, electric spark distributes stronglyer when making spark plug work, and the snowslide shape detonation that is produced during vaporific gasoline combustion is stronger.Further make the more abundant burning of gasoline, reduce oil consumption rate.Permanent magnet can adopt the alnico alloy magnetic material, also can adopt the corrosion-resistant and high-temperature resistant rareearth magnetic material, as barium manganese rareearth magnetic material.
The present invention compared with prior art, have following distinguishing feature and outstanding advantage: the present invention expands to annular electro spark gap between two ring surfaces with the electric spark clearance between the some face of spark plug in the prior art, thereby greatly expands electric spark emission area between two electrodes.No matter engine can both be adjusted the trigger point of annular electro spark gap automatically according to the power of pulse current in starting, idling or accelerator, to comprehensive powerful ring-type igniting, gasoline is fully burnt from the part, but through actual measurement fuel-economizing 5～12%.There is toroidal cavity annular electro spark gap top, and the through hole of circumferential distribution is arranged, because the washing away of air-flow, is difficult for carbon deposit around making the annular electro spark gap, but extending plug useful life.The grounding electrode of the round flange of central electrode end and housing lower end all can be designed to screw connection structure, thereby can regularly pull down cleaning carbon deposit or replacing, extending plug useful life.Can be provided with permanent magnet between screw rod and the central electrode, make electric spark clearance form field of magnetic forece on every side, make igniting stronger, it is more abundant to burn, and further reduces oil consumption rate.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the structural representation of first embodiment of the invention.
Fig. 2 is the structural representation of second embodiment of the invention.
Fig. 3 is the structural representation of third embodiment of the invention.
Embodiment one: referring to Fig. 1, this durable spark plug comprises the grounding electrode 7 of screw rod 2, nut 1, insulator 3, housing 4 and lower end thereof and the central electrode 6 that is connected with screw rod 2.It is annular solid that grounding electrode 7 is made one with housing 4.Central electrode 6 stretches out housing 4 lower end grounding electrodes 7, and end has round flange 9, forms the annular electro spark gap of radial opening between the end face of round flange 9 inner faces and housing 4 lower end grounding electrodes 7.Between the insulator 3 of annular electro spark gap top and the housing 4 one section toroidal cavity is arranged, circumferential uniform 3～12 through holes 8 of grounding electrode 7 are connected toroidal cavity.Between screw rod 2 and the central electrode 6 permanent magnet 5 is housed.Grounding electrode 7 materials and central electrode 6 terminal round flange 9 materials all adopt the corrosion-resistant and high-temperature resistant alloy, as nickel, platinum alloy.Permanent magnet 5 materials adopt barium manganese rareearth magnetic material.
Embodiment two: referring to Fig. 2, the structure of this durable spark plug is identical with embodiment one substantially, and institute's difference is: central electrode 6 ends are arranged in housing 4 lower end grounding electrodes 7 inner chambers, form the annular electro spark gap of axially open between the two.
Embodiment three: referring to Fig. 3, this durable spark plug structure is identical with embodiment two basically, and institute's difference is: grounding electrode 7 spins by screw thread and housing 4.
Claims (10)
1. the durable spark plug in an internal combustion engine river, comprise the grounding electrode (7) of screw rod (2), nut (1), insulator (3), housing (4) and lower end thereof and the central electrode (6) that is electrically connected with Luo Xuan (2), it is characterized in that grounding electrode (7) is for forming the annular electro spark gap between the end of annular solid and central electrode (6).
2. durable spark plug according to claim 1 is characterized in that central electrode (6) end is arranged in housing (4) lower end grounding electrode (7) inner chamber, forms the annular electro spark gap of axially open between the two.
3. durable spark plug according to claim 1, it is characterized in that central electrode (6) stretches out housing (4) lower end grounding electrode (7), and end has round flange (9), forms the annular electro spark gap of radial opening between the end face of round flange (9) inner face and housing (4) lower end grounding electrode (7).
4. durable spark plug according to claim 3 is characterized in that round flange (9) spins and is fixedly connected on the central electrode (6) by welding or screw thread.
5. durable spark plug according to claim 4 is characterized in that round flange (9) material is the corrosion-resistant and high-temperature resistant nickel alloy.
6. according to claim 1 or 2 or 3 described durable spark plugs, one section toroidal cavity is arranged, circumferential uniform 3～12 through holes (8) connection toroidal cavity of grounding electrode (7) between the insulator (3) that it is characterized in that annular electro spark gap top and the housing (4).
7. durable spark plug according to claim 6 is characterized in that grounding electrode (7) and housing (4) make one.
8. durable spark plug according to claim 6 is characterized in that grounding electrode (7) spins by screw thread and housing (4).
9. according to claim 7 or 8 described durable spark plugs, it is characterized in that grounding electrode (7) material is the corrosion-resistant and high-temperature resistant alloy.
10. durable spark plug according to claim 1 is characterized in that between screw rod (2) and the central electrode (6) permanent magnet (5) being housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98110830 CN1235398A (en) | 1998-05-08 | 1998-05-08 | Durable spark plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98110830 CN1235398A (en) | 1998-05-08 | 1998-05-08 | Durable spark plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1235398A true CN1235398A (en) | 1999-11-17 |
Family
ID=5220847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98110830 Pending CN1235398A (en) | 1998-05-08 | 1998-05-08 | Durable spark plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1235398A (en) |
-
1998
- 1998-05-08 CN CN 98110830 patent/CN1235398A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |