JPS54150525A - Ignition plug - Google Patents

Ignition plug

Info

Publication number
JPS54150525A
JPS54150525A JP5756378A JP5756378A JPS54150525A JP S54150525 A JPS54150525 A JP S54150525A JP 5756378 A JP5756378 A JP 5756378A JP 5756378 A JP5756378 A JP 5756378A JP S54150525 A JPS54150525 A JP S54150525A
Authority
JP
Japan
Prior art keywords
electrode
earth electrode
mixture
ignition
metal fittings
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.)
Pending
Application number
JP5756378A
Other languages
Japanese (ja)
Inventor
Koji Harada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5756378A priority Critical patent/JPS54150525A/en
Publication of JPS54150525A publication Critical patent/JPS54150525A/en
Pending legal-status Critical Current

Links

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  • Spark Plugs (AREA)

Abstract

PURPOSE: To improve ignition capacity, by reducing the projection area of an earth electrode to the fluid direction of mixture, and by devising a shape of a section and the joining direction to the metal fittings of the earth electrode so that mixture be easy to flow into a spark gap.
CONSTITUTION: One central electrode 2 and an electrode axis 4 are fixed to the inside of an insulator 1 by means of an airtight seal 3 in an ignition plug, and the ignition plug is clamped into metal fittings 5 under an airtight condition through a packing 6 and a caulking link 7. A spark gap 9 is constituted in such a manner that one earth electrode 8 is welded to an ignition end 5a of the metal fittings 5 and the one end faces to the central electrode 2a. In this case, a section of the earth electrode 8 is circularly formed while a plane portion 8a compressed is mounted to an earth electrode surface facing to the discharge end 2a of the central electrode 2. Mixture is easily let flow in by disposing a longitudinal axis of the earth electrode 8 so that the axis be identical to the fluid direction of mixture, thus improving ignition capacity.
COPYRIGHT: (C)1979,JPO&Japio
JP5756378A 1978-05-17 1978-05-17 Ignition plug Pending JPS54150525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5756378A JPS54150525A (en) 1978-05-17 1978-05-17 Ignition plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5756378A JPS54150525A (en) 1978-05-17 1978-05-17 Ignition plug

Publications (1)

Publication Number Publication Date
JPS54150525A true JPS54150525A (en) 1979-11-26

Family

ID=13059295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5756378A Pending JPS54150525A (en) 1978-05-17 1978-05-17 Ignition plug

Country Status (1)

Country Link
JP (1) JPS54150525A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007134318A (en) * 2005-10-11 2007-05-31 Ngk Spark Plug Co Ltd Spark plug and manufacturing method of spark plug
JP2007234511A (en) * 2006-03-03 2007-09-13 Ngk Spark Plug Co Ltd Spark plug
JP2007280938A (en) * 2006-03-14 2007-10-25 Ngk Spark Plug Co Ltd Spark plug for internal combustion engine
JP2009094047A (en) * 2007-09-18 2009-04-30 Ngk Spark Plug Co Ltd Spark plug for internal combustion engine
WO2009153927A1 (en) * 2008-06-18 2009-12-23 日本特殊陶業株式会社 Spark plug
US7714489B2 (en) 2005-10-11 2010-05-11 Ngk Spark Plug Co., Ltd. Spark plug including ground electrode with arcuately curved face
DE102019109681B4 (en) 2018-05-11 2024-05-23 Denso Corporation Spark plug of an internal combustion engine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4693126B2 (en) * 2005-10-11 2011-06-01 日本特殊陶業株式会社 Spark plug and method of manufacturing spark plug
US7714489B2 (en) 2005-10-11 2010-05-11 Ngk Spark Plug Co., Ltd. Spark plug including ground electrode with arcuately curved face
JP2007134318A (en) * 2005-10-11 2007-05-31 Ngk Spark Plug Co Ltd Spark plug and manufacturing method of spark plug
JP2007234511A (en) * 2006-03-03 2007-09-13 Ngk Spark Plug Co Ltd Spark plug
JP4699918B2 (en) * 2006-03-03 2011-06-15 日本特殊陶業株式会社 Spark plug
JP2007280938A (en) * 2006-03-14 2007-10-25 Ngk Spark Plug Co Ltd Spark plug for internal combustion engine
JP2009094047A (en) * 2007-09-18 2009-04-30 Ngk Spark Plug Co Ltd Spark plug for internal combustion engine
EP2299551A1 (en) * 2008-06-18 2011-03-23 NGK Spark Plug Co., Ltd. Spark plug
WO2009153927A1 (en) * 2008-06-18 2009-12-23 日本特殊陶業株式会社 Spark plug
JPWO2009153927A1 (en) * 2008-06-18 2011-11-24 日本特殊陶業株式会社 Spark plug
US8288931B2 (en) 2008-06-18 2012-10-16 Ngk Spark Plug Co., Ltd. Spark plug having a center electrode and a ground electrode provided with no noble metal member
EP2299551A4 (en) * 2008-06-18 2013-04-17 Ngk Spark Plug Co Spark plug
DE102019109681B4 (en) 2018-05-11 2024-05-23 Denso Corporation Spark plug of an internal combustion engine

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