Patent ID: 11923663
Assignee: WEICHAI TORCH TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 2:
3. The spark plug heat rating measurement method of claim 1, wherein: the same amount of spark gap energy is supplied to the spark plugs with different heat ratings through a real time control of the spark discharge current, to heat up the high-voltage central electrodes and the ceramic insulators of the spark plugs; in order to precisely control the spark gap energy, a discharge duration is controlled between 10 s and 20 s, and a discharge current amplitude is controlled between 40 mA and 200 mA; by doing this, the temperature profiles of the high-voltage central electrodes and the surrounding ceramic insulators of the spark plugs are measured to compare the heat ratings of spark plugs with the different ceramic insulators.