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What is a V-grooved type spark plug?
It has a 90°V-groove in the tip of the center electrode to enhance ignitability.
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It has a 90°V-groove in the tip of the center electrode.
The V-groove ensures that the spark is directed to the periphery of the electrodes.
The flame core is generated near the perimeter of the electrodes and grows.
Ignitability is improved because the electrodes are interfering less with the growth of the flame core.
Comparison for ignitability
Comparison for spark voltage
(required voltage)
Example of part number of a V-grooved spark plug
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Q&A
Trouble Shooting
It has a 90°V-groove in the tip of the center electrode.
The V-groove ensures that the spark is directed to the periphery of the electrodes.
Comparison for ignitability)
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