GB1500747A - Multiple air gap spark plug - Google Patents
Multiple air gap spark plugInfo
- Publication number
- GB1500747A GB1500747A GB4334175A GB4334175A GB1500747A GB 1500747 A GB1500747 A GB 1500747A GB 4334175 A GB4334175 A GB 4334175A GB 4334175 A GB4334175 A GB 4334175A GB 1500747 A GB1500747 A GB 1500747A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plug
- electrode
- intermediate electrodes
- high impedance
- air
- 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
Links
Classifications
-
- 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
- H01T13/46—Sparking plugs having two or more spark gaps
- H01T13/462—Sparking plugs having two or more spark gaps in series connection
Landscapes
- Spark Plugs (AREA)
Abstract
1500747 Sparking-plug; ignition system FORD MOTOR CO Ltd 22 Oct 1975 [26 Dec 1974] 43341/75 Heading F1B A sparking-plug comprises third electrode means 34 positioned intermediate a central electrode 30 and an earth electrode 28 within an air-gap, and high impedance coupling means electrically conductively connected to the third electrode means and arranged to provide an electrical high impedance between the third electrode means and a source of electrical energy associated with the plug. As shown there are two intermediate electrodes 34, 36 but the number of intermediate electrodes may be as large as space constraints permit. The high impedance coupling is achieved by connecting the intermediate electrodes 34, 36 with semi-cylindrical capacitive plate members 38, 40. Alternatively each of the intermediate electrodes could be capacitively coupled to the central electrode 30. The air-gaps could be arranged to deviate from the centre line of the plug 10. The spark-plug is able to generate sparks having greatly increased length without requiring the application of levels of energization in excess of those commonly encountered with single air-gap plugs.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53666474A | 1974-12-26 | 1974-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1500747A true GB1500747A (en) | 1978-02-08 |
Family
ID=24139412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4334175A Expired GB1500747A (en) | 1974-12-26 | 1975-10-22 | Multiple air gap spark plug |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5612793Y2 (en) |
| FR (1) | FR2296291A1 (en) |
| GB (1) | GB1500747A (en) |
| IT (1) | IT1048322B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008218204A (en) * | 2007-03-05 | 2008-09-18 | Miyama Kk | Multi-point ignition plug |
| WO2013042555A1 (en) * | 2011-09-20 | 2013-03-28 | 日本碍子株式会社 | Spark plug, ignition device and method for igniting air-fuel mixture |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1399166A (en) * | 1919-03-07 | 1921-12-06 | Springer Franklin Wesley | Spark-plug for internal-combustion engines |
| US1381167A (en) * | 1919-09-13 | 1921-06-14 | Carbo Gas Company | Spark-plug |
| FR770318A (en) * | 1933-06-06 | 1934-09-12 | Spark plug improvements | |
| JPS4713001U (en) * | 1971-03-15 | 1972-10-16 |
-
1975
- 1975-10-17 IT IT5182975A patent/IT1048322B/en active
- 1975-10-22 GB GB4334175A patent/GB1500747A/en not_active Expired
- 1975-10-30 FR FR7533183A patent/FR2296291A1/en active Granted
- 1975-12-26 JP JP1975175538U patent/JPS5612793Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5183538U (en) | 1976-07-05 |
| FR2296291A1 (en) | 1976-07-23 |
| IT1048322B (en) | 1980-11-20 |
| JPS5612793Y2 (en) | 1981-03-24 |
| FR2296291B1 (en) | 1978-10-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |