JPS539940A - Spark plug for internal combustion engine - Google Patents

Spark plug for internal combustion engine

Info

Publication number
JPS539940A
JPS539940A JP8379076A JP8379076A JPS539940A JP S539940 A JPS539940 A JP S539940A JP 8379076 A JP8379076 A JP 8379076A JP 8379076 A JP8379076 A JP 8379076A JP S539940 A JPS539940 A JP S539940A
Authority
JP
Japan
Prior art keywords
combustion engine
internal combustion
spark plug
end surface
top end
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
JP8379076A
Other languages
Japanese (ja)
Other versions
JPS5840831B2 (en
Inventor
Makoto Yato
Kanji Higuchi
Yutaka Ninomiya
Toshimi Kakimoto
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 JP8379076A priority Critical patent/JPS5840831B2/en
Publication of JPS539940A publication Critical patent/JPS539940A/en
Publication of JPS5840831B2 publication Critical patent/JPS5840831B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Spark Plugs (AREA)

Abstract

PURPOSE: The first spark gap is formed by projecting the small radius part of the central electrode from the top end surface of the foot part, and the second spark gap is formed between the top end surface of the foot part and the earth electrode, and the ignition performance for mixed gas is improved.
COPYRIGHT: (C)1978,JPO&Japio
JP8379076A 1976-07-13 1976-07-13 Spark plug for internal combustion engine Expired JPS5840831B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8379076A JPS5840831B2 (en) 1976-07-13 1976-07-13 Spark plug for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8379076A JPS5840831B2 (en) 1976-07-13 1976-07-13 Spark plug for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS539940A true JPS539940A (en) 1978-01-28
JPS5840831B2 JPS5840831B2 (en) 1983-09-08

Family

ID=13812430

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8379076A Expired JPS5840831B2 (en) 1976-07-13 1976-07-13 Spark plug for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5840831B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3272615B2 (en) 1995-11-16 2002-04-08 日本特殊陶業株式会社 Spark plug for internal combustion engine

Also Published As

Publication number Publication date
JPS5840831B2 (en) 1983-09-08

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