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

Claim 4:
5. The spark plug heat rating measurement method of claim 1, wherein: with dynamically controlled the spark discharge current, using different heating powers or heating durations, spark plasma channels with different temperatures are generated to heat up the high-voltage central electrodes and the surrounding ceramic insulators of the spark plugs with different heat ratings to the same temperature; once the temperatures of the high-voltage central electrodes and the surrounding ceramic insulators of the different spark plugs reach the same temperature, the heating process is cut off, letting the spark plugs be cooled down naturally; during the spark plug cooling processes of the spark plugs, the temperature profiles of the high-voltage central electrodes and the surrounding ceramic insulators are recorded; since the heat rating of the spark plug reflects a heat dissipation capability of the high-voltage central electrode and the surrounding ceramic insulator, the spark plugs with different heat ratings will have different temperature profiles during the cooling process; the temperature profiles of the cooling process can be used to evaluate the heat ratings of the spark plug.