Title:
SPARK PLUG
Document Type and Number:
WIPO Patent Application WO/2015/174008
Kind Code:
A1
Abstract:
In the present invention, a spark plug is orthogonal to the longitudinal direction of an electrode parent material. The surface of the parent material is exposed in a cross-section of a ground electrode through which the axis of an electrode tip passes. The following relationships are fulfilled: 1.2 E≤F≤1.9 E, 0.05 mm≤Da≤0.30 mm, 0.05 mm≤Db≤0.30 mm, and 0.20 mm2≤J≤0.70 mm2.
Inventors:
SHIMADATE MAGOKI (JP)
Application Number:
PCT/JP2015/001961
Publication Date:
November 19, 2015
Filing Date:
April 07, 2015
Export Citation:
Assignee:
NGK SPARK PLUG CO (JP)
International Classes:
H01T13/32
Foreign References:
| JP2002237365A | 2002-08-23 | |||
| JP2009054572A | 2009-03-12 |
Other References:
See also references of EP 3046193A4
Attorney, Agent or Firm:
TOKKYO GYOMUHOJIN MEISEI INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Akinari international patent firm (JP)
Patent business corporation Akinari international patent firm (JP)
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