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Patent Searching and Data


Title:
IGNITION PLUG FOR INTERNAL COMBUSTION ENGINES, AND INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/138854
Kind Code:
A1
Abstract:
An ignition plug (1) for an internal combustion engines has: a cylindrical housing (2); a cylindrical insulator (3) retained inside the housing (2); a center electrode (4) retained inside the insulator (3) and exposed to the front end side (Z1) from the front end of the insulator (3); and a ground electrode (5) which allows an electric discharge to occur between the ground electrode (5) and the center electrode (4). When one side and the other side in a specific direction (X) which is perpendicular to a plug axis direction (Z) are defined respectively as a front side (F) and a rear side (R), the front end surface (20) of the housing (2) has a front end sloped surface (21) which is sloped toward the front end side (Z1) as the front end sloped surface (21) extends from the front end (20F) toward the rear end (20R) of the front end surface (20). The rear end (21R) of the front end sloped surface (21) is positioned further toward the front end side (Z1) than the front end (20F) of the front end surface (20), and is positioned further toward the rear side (R) than the front end (3F) of the insulator (3).

Inventors:
SUGIURA Akimitsu (1-1 Showa-cho, Kariya-cit, Aichi 61, 〒4488661, JP)
Application Number:
JP2018/047424
Publication Date:
July 18, 2019
Filing Date:
December 25, 2018
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
H01T13/32; H01T13/08; H01T13/52
Foreign References:
JP2011003478A2011-01-06
JP2009004257A2009-01-08
JP2016058196A2016-04-21
JP2017054624A2017-03-16
Attorney, Agent or Firm:
AICHI, TAKAHASHI, IWAKURA & ASSOCIATES (Meieki Nagata Building, 26-19 Meieki 3-chome, Nakamura-ku, Nagoya-sh, Aichi 02, 〒4500002, JP)
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