JPS6427176A - Spark plug for internal combustion engine - Google Patents
Spark plug for internal combustion engineInfo
- Publication number
- JPS6427176A JPS6427176A JP63083369A JP8336988A JPS6427176A JP S6427176 A JPS6427176 A JP S6427176A JP 63083369 A JP63083369 A JP 63083369A JP 8336988 A JP8336988 A JP 8336988A JP S6427176 A JPS6427176 A JP S6427176A
- Authority
- JP
- Japan
- Prior art keywords
- tip
- insulator
- central electrode
- electrode
- annular hollow
- 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.)
- Granted
Links
Landscapes
- Spark Plugs (AREA)
Abstract
PURPOSE:To improve the burning effect of carbon deposited as well as ignition characteristic by specifying the relationship between the length of the thinned portion of the central electrode, the depth and the radial directional distance of the annular hollow of an insulator from the central electrode, and the gap between the central electrode and the side surface of the side electrode tip. CONSTITUTION:The distance l between the tip surface 3c of the thinned portion 3b of the central electrode 3 and the tip surface 2a of an insulator 2, the radial directional distance S between the tip surface 2a of the insulator 2 and the central electrode 3 in an annular hollow 10, the depth L of the annular hollow 10, the gap G formed between the side surface 4a of the tip of the side electrode 4 and the tip surface 3c of the thinned portion 3b of the central electrode 3, and the gap g between the tip surface 2a of the insulator 2 and the side surface 4a of the tip of the side electrode 4 are set to meet the relationship of 0<l<=1.0mm, 0.25mm<=S<=1.3mm, 0<L<=1.2mm, and g>G. With this constitution, carbon deposited on the inner hole wall surface 2d of the annular hollow 10 of the insulator 2 is made to burn and the ignition characteristic is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63083369A JP2727558B2 (en) | 1987-04-16 | 1988-04-05 | Spark plug for internal combustion engine |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9405387 | 1987-04-16 | ||
JP62-94053 | 1987-12-16 | ||
JP63083369A JP2727558B2 (en) | 1987-04-16 | 1988-04-05 | Spark plug for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6427176A true JPS6427176A (en) | 1989-01-30 |
JP2727558B2 JP2727558B2 (en) | 1998-03-11 |
Family
ID=26424406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63083369A Expired - Lifetime JP2727558B2 (en) | 1987-04-16 | 1988-04-05 | Spark plug for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2727558B2 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5056496A (en) * | 1989-03-14 | 1991-10-15 | Nippondenso Co., Ltd. | Ignition system of multispark type |
WO2001043246A1 (en) * | 1999-12-13 | 2001-06-14 | Ngk Spark Plug Co., Ltd. | Spark plug |
JP2004165168A (en) * | 1999-06-25 | 2004-06-10 | Ngk Spark Plug Co Ltd | Spark plug |
US7105990B2 (en) | 2002-04-10 | 2006-09-12 | Denso Corporation | Spark plug for internal combustion engine |
JP2007250258A (en) * | 2006-03-14 | 2007-09-27 | Denso Corp | Spark plug for internal combustion engine |
WO2009011173A1 (en) * | 2007-07-17 | 2009-01-22 | Ngk Spark Plug Co., Ltd. | Spark plug for internal combustion engine |
JP2009170215A (en) * | 2008-01-15 | 2009-07-30 | Denso Corp | Spark plug for internal combustion engines |
WO2009125724A1 (en) * | 2008-04-09 | 2009-10-15 | 日本特殊陶業株式会社 | Spark plug for internal combustion engine |
JP2010212245A (en) * | 1999-06-25 | 2010-09-24 | Ngk Spark Plug Co Ltd | Spark plug |
JP2017191644A (en) * | 2016-04-11 | 2017-10-19 | 日本特殊陶業株式会社 | Spark plug |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5386098B2 (en) * | 2008-03-21 | 2014-01-15 | 日本特殊陶業株式会社 | Spark plug |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53126443A (en) * | 1977-04-11 | 1978-11-04 | Nippon Soken Inc | Ignition plug |
JPS58135590A (en) * | 1982-02-05 | 1983-08-12 | 株式会社デンソー | Ignition plug for internal combustion engine |
-
1988
- 1988-04-05 JP JP63083369A patent/JP2727558B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53126443A (en) * | 1977-04-11 | 1978-11-04 | Nippon Soken Inc | Ignition plug |
JPS58135590A (en) * | 1982-02-05 | 1983-08-12 | 株式会社デンソー | Ignition plug for internal combustion engine |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5056496A (en) * | 1989-03-14 | 1991-10-15 | Nippondenso Co., Ltd. | Ignition system of multispark type |
JP2010212245A (en) * | 1999-06-25 | 2010-09-24 | Ngk Spark Plug Co Ltd | Spark plug |
JP2004165168A (en) * | 1999-06-25 | 2004-06-10 | Ngk Spark Plug Co Ltd | Spark plug |
WO2001043246A1 (en) * | 1999-12-13 | 2001-06-14 | Ngk Spark Plug Co., Ltd. | Spark plug |
US6819032B2 (en) | 1999-12-13 | 2004-11-16 | Ngk Spark Plug Co., Ltd. | Spark plug having resistance against smoldering, long lifetime, and excellent ignitability |
US7105990B2 (en) | 2002-04-10 | 2006-09-12 | Denso Corporation | Spark plug for internal combustion engine |
JP2007250258A (en) * | 2006-03-14 | 2007-09-27 | Denso Corp | Spark plug for internal combustion engine |
KR101442877B1 (en) * | 2007-07-17 | 2014-09-22 | 니혼도꾸슈도교 가부시키가이샤 | Spark plug for internal combustion engine |
JP2009026469A (en) * | 2007-07-17 | 2009-02-05 | Ngk Spark Plug Co Ltd | Spark plug for internal combustion engine |
WO2009011173A1 (en) * | 2007-07-17 | 2009-01-22 | Ngk Spark Plug Co., Ltd. | Spark plug for internal combustion engine |
US9016253B2 (en) | 2007-07-17 | 2015-04-28 | Ngk Spark Plug Co., Ltd. | Spark plug for internal combustion engine |
JP2009170215A (en) * | 2008-01-15 | 2009-07-30 | Denso Corp | Spark plug for internal combustion engines |
WO2009125724A1 (en) * | 2008-04-09 | 2009-10-15 | 日本特殊陶業株式会社 | Spark plug for internal combustion engine |
JP5476123B2 (en) * | 2008-04-09 | 2014-04-23 | 日本特殊陶業株式会社 | Spark plug for internal combustion engine |
US9000658B2 (en) | 2008-04-09 | 2015-04-07 | Ngk Spark Plug Co., Ltd. | Spark plug for internal combustion engine |
JP2017191644A (en) * | 2016-04-11 | 2017-10-19 | 日本特殊陶業株式会社 | Spark plug |
Also Published As
Publication number | Publication date |
---|---|
JP2727558B2 (en) | 1998-03-11 |
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Legal Events
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