Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SPARK PLUG
Document Type and Number:
WIPO Patent Application WO/2018/105292
Kind Code:
A1
Abstract:
In order to provide a spark plug capable of suppressing radio-wave noise, an insulating body has a shaft hole extending in the axial direction, from the tip side to the rear end side thereof. At least part of a center electrode is inserted into the tip side of the shaft hole and at least part of a terminal fitting is inserted into the rear end side of the shaft hole. A connection section: connects the terminal fitting and the center electrode, inside the shaft hole; includes a plurality of magnetic particles comprising both ferrite particles and a conductive substance coating the particles; and has a conductive layer section that the conductive substance for any two magnetic particles among the plurality of magnetic particles comes in contact with. The conductive layer section has a straight line distance from end to end of at least 100 µm and a thickness of at least 2 µm.

Inventors:
KUROSAWA KAZUHIRO (JP)
TAKAOKA KATSUYA (JP)
TANAKA KUNIHARU (JP)
KURONO HIROKAZU (JP)
UEGAKI HIRONORI (JP)
YOKOYAMA KOTA (JP)
Application Number:
PCT/JP2017/040226
Publication Date:
June 14, 2018
Filing Date:
November 08, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NGK SPARK PLUG CO (JP)
International Classes:
H01T13/39; H01T13/20
Domestic Patent References:
WO2015099081A12015-07-02
WO2015099082A12015-07-02
Foreign References:
JP5996044B12016-09-21
Attorney, Agent or Firm:
AOKI Noboru et al. (JP)
Download PDF: