Glühkerze und Verfahren zur Herstellung davon

Details

Veröffentlichungs-Nr.

EP2863127

Aktenzeichen

EP14189334

Anmeldetag

17. Oktober 2014

Veröffentlichung

20. Mai 2020

Erteilung

20. Mai 2020

Rechtsraum

EP

IPC

F23Q7/00

Abstract

[Objective] To provide a glow plug whose ceramic heater is unlikely to crack and which is high in reliability and to provide a method of manufacturing such a glow plug. [Means for Solution] A glow plug 1 includes a metallic shell 10, a ceramic heater 20 held on the forward end side GS of the metallic shell 10, a center rod member 40 formed of a metal, inserted into the metallic shell 10, and extending in an axial direction HJ; and a connection member 50 connecting a heater rear end portion 25 and a center rod forward end portion 41. A center rod trunk portion 43 of the center rod member 40 located between the center rod forward end portion 41 and a center rod rear end portion 45 has a plurality of runout correction portions 43f having corrected the circular runout of a trunk forward end portion 43s in relation to a trunk rear end portion 43k serving as a reference. The runout correction portions 43f are spaced from one another in the axial direction HJ.

Anmelder

Firma

NGK Spark Plug Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete