Platinum Spark plugs which is welded platinum material on the tip of centre-electrode or ground-electrode. If platinum only on the centre-electrode, we call it as Single platinum Type, if platinum on both of centre-electrode and ground-electrode, we call it as Double platinum Type. Platinum Spark plugs is one kind of fire wire Spark plugs because tip of Centre-electrode is fine wire.
Platinum spark plugs feature:
1.Improve performance of ignition
Using platinum tip will improve the ignition Temperature, also centre-electrode is fire wire, therefore air/fuel mixture will be more easy fire enough to fire in the combustion chamber. Platinum have lower electron escape barrier, that's means, platinum spark plugs have lower ignition demand voltage.
2.longer life
The fusion temperature of Platinum is 1800. So it has good oxidigation-proof and anti-scorch, and thereby can bear the chemical corrosion resulted from the gas burnt and dregs. Moreover Platinum can keep the original spark gap and lengthen the working life, Usually, the life of Platinum spark plugs is 10000-160000 km.