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With Iridium Alloy Center Electrode
Employing a high melting point iridium alloy tip for the
center electrode tip, a fine dia. of 0.4mm has been realized.
This fine electrode has led to a lower spark voltage and a
large increase in ignitability, which draws out even more
output and accelerator response from the engine. (Melting Point: Iridium 2454°C, Platinum 1769°C). |
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Platinum plug
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Platinum plug
(Example) PK20R11
･ Platinum is used for both the center and ground electrodes. ･ Mileage, drivability, and durability are improved by using a finer center electrode with a platinum tip. ･ D14  L19 16･ TOYOTA / DAIHATSU |
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Double-electrode platinum plug
(Example) PK20TR11, PK20PTR-S9
･ Platinum tip is mounted on both the center and ground electrodes. ･ The double-electrode structure reduces the voltage required for positive discharges. ･ D14 L1916･ TOYOTA / DAIHATSU |
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