Title:
内燃機関用のスパークプラグ及びその製造方法
Document Type and Number:
Japanese Patent JP7188119
Kind Code:
B2
Abstract:
An outer periphery of the tubular housing includes a parallel surface, a pressure contact surface and a connection surface. The parallel surface is formed parallel to an axial direction of the spark plug. The pressure contact surface is located closer to a tip of the spark plug and more radially inward than the parallel surface. The pressure contact surface has a tapered shape in that a diameter decreases toward the tip. The pressure contact surface is pressed against a cylinder head when installed in the internal combustion engine. The connection surface is located closer to a base of the spark plug than an extension line in a longitudinal cross-section of the spark plug parallel to the axial direction including a plug central axis. The connection surface connects an outer peripheral end of the pressure contact surface with a longitudinal end of the parallel surface.
More Like This:
| JPH0432178 | SPARK PLUG FOR INTERNAL COMBUSTION ENGINE |
| JP6986041 | Spark plug |
Inventors:
Kazuhide Kawai
Application Number:
JP2019008329A
Publication Date:
December 13, 2022
Filing Date:
January 22, 2019
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H01T13/08; H01T21/02
Domestic Patent References:
| JP201426928A | ||||
| JP2001121240A | ||||
| JP2015146256A |
Foreign References:
| WO2012140892A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Aichi International Patent Office
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