IN2012DN01487A - - Google Patents

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Publication number
IN2012DN01487A
IN2012DN01487A IN1487DEN2012A IN2012DN01487A IN 2012DN01487 A IN2012DN01487 A IN 2012DN01487A IN 1487DEN2012 A IN1487DEN2012 A IN 1487DEN2012A IN 2012DN01487 A IN2012DN01487 A IN 2012DN01487A
Authority
IN
India
Prior art keywords
section
slender
bulged
axis
diametrical direction
Prior art date
Application number
Inventor
Suzuki Akira
Nakamura Mai
Musasa Mamoru
Original Assignee
Ngk Spark Plug Co
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 Ngk Spark Plug Co filed Critical Ngk Spark Plug Co
Publication of IN2012DN01487A publication Critical patent/IN2012DN01487A/en

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
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/36—Sparking plugs characterised by features of the electrodes or insulation characterised by the joint between insulation and body, e.g. using cement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
    • 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
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs

Abstract

A generation of a stress corrosion cracking is prevented in a middle section. The spark plug 1 includes an insulator 2 that extends along an axis CL1 direction and a metal shell 3. The metal shell 3 includes a middle section 41 that is positioned between a collar section 16 and a tool engaging section 19. The middle section 41 has a bulged section 42 that bulges towards both the inside and the outside in the diametrical direction, a first slender section 43 that is the most slender at a portion that is positioned further to the rear end side in the axis CL1 direction than the bulged section 42 and a second slender section 44 that is the most slender at a portion that is positioned further to the leading end side in the axis CL1 direction than the bulged section 42 and the bulged section 42 has the most bulged section 42M that bulges toward the most inside of diametrical direction. In a cross-section that includes the axis CL1, when the distance between both slender sections 43 and 44 along the axis CL1 is F (mm) and the bulged amount to the inside in diametrical direction of the most bulged section 42M with respect to an imaginary line that connects a portion that is positioned furthest to the inside in diametrical direction of both slender sections 43 and 44 is G (mm), 0.00 < G/F ≤ 0.18 is satisfied.
IN1487DEN2012 2009-08-26 2010-06-23 IN2012DN01487A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009194995 2009-08-26
PCT/JP2010/060624 WO2011024548A1 (en) 2009-08-26 2010-06-23 Spark plug for internal combustion engine and method for manufacturing same

Publications (1)

Publication Number Publication Date
IN2012DN01487A true IN2012DN01487A (en) 2015-06-05

Family

ID=43627659

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1487DEN2012 IN2012DN01487A (en) 2009-08-26 2010-06-23

Country Status (7)

Country Link
US (1) US8519606B2 (en)
EP (1) EP2472682B1 (en)
JP (1) JP5092022B2 (en)
KR (1) KR101392040B1 (en)
CN (1) CN102598441B (en)
IN (1) IN2012DN01487A (en)
WO (1) WO2011024548A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5816643B2 (en) * 2013-02-26 2015-11-18 日本特殊陶業株式会社 Spark plug

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2230478Y (en) * 1994-12-28 1996-07-03 吴飞 Spark plug
JP4434473B2 (en) * 2000-11-28 2010-03-17 日本特殊陶業株式会社 Spark plug
DE60223225T2 (en) * 2001-12-28 2008-07-31 NGK Spark Plug Co., Ltd., Nagoya Spark plug and method of manufacturing the spark plug
JP2003257583A (en) 2001-12-28 2003-09-12 Ngk Spark Plug Co Ltd Spark plug
JP4548818B2 (en) 2003-06-18 2010-09-22 日本特殊陶業株式会社 Spark plug and manufacturing method thereof
US7164225B2 (en) * 2003-09-11 2007-01-16 Ngk Spark Plug Co., Ltd. Small size spark plug having side spark prevention
JP2006236906A (en) 2005-02-28 2006-09-07 Ngk Spark Plug Co Ltd Manufacturing method of spark plug
CN100511887C (en) * 2005-08-19 2009-07-08 日本特殊陶业株式会社 Spark plug
JP4741316B2 (en) * 2005-08-22 2011-08-03 日本特殊陶業株式会社 Spark plug
EP1837964B1 (en) * 2006-03-20 2014-02-12 NGK Spark Plug Co., Ltd. Spark plug for use in an internal-combustion engine
US7994694B2 (en) * 2007-03-30 2011-08-09 Ngk Spark Plug Co., Ltd. Spark plug for internal combustion engine
JP4510846B2 (en) 2007-05-07 2010-07-28 株式会社フューチャービジョン Thin film transistor and liquid crystal display panel using the thin film transistor

Also Published As

Publication number Publication date
KR101392040B1 (en) 2014-05-07
JPWO2011024548A1 (en) 2013-01-24
US8519606B2 (en) 2013-08-27
CN102598441B (en) 2013-06-26
CN102598441A (en) 2012-07-18
US20120146484A1 (en) 2012-06-14
WO2011024548A1 (en) 2011-03-03
EP2472682A4 (en) 2014-04-16
EP2472682A1 (en) 2012-07-04
KR20120058528A (en) 2012-06-07
EP2472682B1 (en) 2018-11-07
JP5092022B2 (en) 2012-12-05

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