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It is general question concerning DENSO SPARK PLUG that is often.
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Can I replace my double, triple, or quadruple electrode plugs to Iridium Power or Iridium Tough? |
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| This is possible. The reason: because of the 0.4mm center electrode in Iridium Power and Iridium Tough plugs, they have a lower spark voltage compared to double, triple, and quadruple electrode plugs. Please refer to the Standard Resistor Model Quick Chart. |
| Spark Voltage |
| The thinner the electrode is, the stronger the electrical field is. Because the electrical field affects spark voltage, a thinner electrode lowers spark voltage. If each type of electrode shape is modeled as shown below, Iridium Tough has a lower voltage than double electrode plugs. |
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| Ignitability |
| The more the contact area between the flame kernel and the electrode is minimized, the smaller the cooling action from the electrodes and the better ignitability is. Because of the 0.4mm center electrode, the contact area between the flame kernel and the electrode is small, resulting in excellent ignitability. |
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