Spark plug for internal combustion engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11973323
APP PUB NO 20230094043A1
SERIAL NO

18074722

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A spark plug includes: a cylindrical insulator; a center electrode, held on an inner circumferential side of the insulator, protruding from the insulator toward a tip end side; a cylindrical housing holding the insulator on an inner circumferential side; a ground electrode forming a discharge gap between the ground electrode and the center electrode on the inner circumferential side of the housing; and a plug cover provided in a tip end portion of the housing to cover a pre-combustion chamber in which the discharge gap is arranged. The plug cover is provided with an injection hole that communicates the pre-combustion chamber to the outside. The ground electrode includes a discharge-side end portion that faces the discharge gap and a joining-side end portion that is joined to the housing. The discharge-side end portion is arranged further toward a base end side in an axial direction than the joining-side end portion is.

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First Claim

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Family

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Patent Owner(s)

  • DENSO CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sugiura, Akimitsu Kariya, JP 58 210

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