Iridium-based spark plug

Numéro d’image : 11628442
Iridium-based spark plug
Iridium-based spark plug. Spark plugs are devices used in combustion engines to provide sparks to ignite the fuel-air mixture when the engine is started. The spark is produced using a high voltage,which causes the air between the two electrodes to become ionised in a similar process to the formation of lightning. Here,the spark gap and tip is at lower right. This is an iridium spark plug from the Japanese NGK company. It has a laser-welded tip made of an alloy of the transition metal iridium (Ir). This durable alloy has a high melting point,ensuring that this spark plug has a longer lifetime than those using less durable materials
Licence : Droits gérés
Crédit: Science Photo Library
Taille de l’image : 3465 px × 5197 px
Model Release : Non requis
Property Release : Non requis
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