Zündkerze

Details

Veröffentlichungs-Nr.

EP3220496

Aktenzeichen

EP17161342

Anmeldetag

16. März 2017

Veröffentlichung

13. Mai 2020

Erteilung

13. Mai 2020

Rechtsraum

EP

IPC

H01T13/32H01T13/39

Abstract

An ignition plug includes an insulator that includes a through hole; a center electrode; a metal shell that holds the insulator; a bar-shaped ground electrode body 31; an electrode tip 39 that is disposed along a side surface of the ground electrode body opposing a discharge surface of the center electrode; and a welding portion 35 that is disposed between the ground electrode tip and the ground electrode body. Over a sub-range RA2 which is 1/4 of a range RA1 from a first end P1 to a second end 392 of the ground electrode tip, a length L1 of the ground electrode tip and a length L2 of the welding portion in a direction perpendicular to a direction D1 satisfy (L2/L1) ‰¥ 0.25.

Anmelder

Firma

NGK Spark Plug Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete