Verfahren zur Inspektion eines Isolators für eine Zündkerze

Details

Veröffentlichungs-Nr.

EP3051640

Aktenzeichen

EP16153421

Anmeldetag

29. Januar 2016

Veröffentlichung

20. November 2019

Erteilung

20. November 2019

Rechtsraum

EP

IPC

H01T13/60

Abstract

A method is provided for inspecting an insulator (10) for a spark plug to determine whether or not the insulator (10) has a defect, wherein the spark plug extends in an axial direction. The method includes a voltage applying step (S4) of applying a voltage between a first electrode (500) disposed in an axial hole (12) in the insulator (10) and a second electrode (300) disposed near an outer peripheral surface of the insulator (10). The voltage applying step (S4) is performed while a gap between a front end of the first electrode (500) and an inner peripheral surface of the insulator (10) that faces the front end of the first electrode (500) in a radial direction is filled with a first insulating material (650) without leaving a hollow space.

Anmelder

Firma

NGK Spark Plug Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete