CPC F02P 3/0838 (2013.01) [F02P 3/093 (2013.01); H01T 13/14 (2013.01); H01T 13/18 (2013.01); H01T 13/20 (2013.01); H01T 13/58 (2013.01)] | 13 Claims |
1. A spark plug heat up method via transient control of a spark discharge current, wherein a high-temperature plasma channel (103) is used to heat up a central electrode (101), and the temperature and energy of the plasma channel (103) are monitored via transient control of the discharge current; wherein by monitoring a discharge current amplitude and a discharge duration, the temperature change of the central electrode (101) and a ceramic insulator (102) are carefully measured and controlled; wherein the method comprising: measure a heat rating of a spark plug (100) by actively heating up the spark plug (100) via transient control of the continuous discharge current; and precisely control a discharge energy, the discharge duration, and the temperature of the surfaces of the central electrode (101) and the ceramic insulator (102) within a proper window to clean up a carbon deposit on the spark plug as well as realize self-cleaning.
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