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It is a question concerning the IRIDIUM POWER that is often.
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| Use of 0.4 mm diameter iridium center electrode and a tapered cut and a U-groove in the ground electrode has enabled us to achieve previously unparalleled firing performance in the IRIDIUM POWER. |
| Ordinarily, the leaner the air mix the more difficult the firing. The greater the ignitability limits, that is the leaner the air mix in which a plug can spark, the better firing performance a plug is said to have. The following graph shows some examples of ignitability limits (*) for various spark plugs. *: Ignitability limits (Air/Fuel); 1)Lean limits to be able to fire 2)As this figure is getting higher, it will become easier to fire. |
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| Compared to normal spark plugs, with a spark gap of 0.8mm, the Ignitability limits is better by 2.5. |
