Test method and apparatus for spark plug insulator

Details Test method and apparatus for spark plug insulator Test method and apparatus for spark plug insulator

2008-05-30

2010-10-05

Dole, Timothy J (Department: 2831)

Electricity: measuring and testing

For insulation fault of noncircuit elements

C324S393000, C324S551000, C324S552000

Reexamination Certificate

active

07808250

ABSTRACT:
There is provided a test method for detecting the presence or absence of a defect in a spark plug insulator, including a reference voltage determination process, a test area determination process, a test voltage determination process and a current detection process. In the reference voltage determination process, a reference voltage VFis determined. In the test area and voltage determined processes, test area and voltage are determined so as not to incur a flashover on the basis of a reference insulator of the same material, shape and size as the spark plug insulator when the reference insulator is placed in position between first and second test electrodes. In the current detection step, the test voltage is applied between the first and second test electrodes to detect an electric current between the first and second test electrodes.

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