JPS6427176A - Spark plug for internal combustion engine - Google Patents

Spark plug for internal combustion engine

Info

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
Application number
JP63083369A
Other languages
Japanese (ja)
Other versions
JP2727558B2 (en
Inventor
Kozo Takamura
Hiroyuki Murai
Yasuyuki Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP63083369A priority Critical patent/JP2727558B2/en
Publication of JPS6427176A publication Critical patent/JPS6427176A/en
Application granted granted Critical
Publication of JP2727558B2 publication Critical patent/JP2727558B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • 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.
JP63083369A 1987-04-16 1988-04-05 Spark plug for internal combustion engine Expired - Lifetime JP2727558B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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