Electrode material for a spark plug

H - Electricity – 01 – T

Patent

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Details

H01T 1/24 (2006.01) H01T 13/39 (2006.01)

Patent

CA 2222616

A spark plug for use in an internal combustion engine includes an electrode material having a core (20) of a high thermal conductivity for reducing the temperature of the spark plug (10) by thermally conducting heat away from the spark plug to a cooler part of the engine. The core (20) extends continuously from an arcing surface at an end of a spark plug electrode to the cooler part of the engine. Surrounding the core (20) is a cladding layer (22) for resisting corrosion when exposed to high temperatures caused by arcing.

Une bougie d'allumage destinée à un moteur à combustion interne comprend un matériau d'électrode ayant un noyau (20) à haute conductivité thermique pour diminuer la température de la bougie d'allumage (10) en évacuant thermiquement la chaleur hors de la bougie d'allumage vers une partie plus froide du moteur. Le noyau (20) s'étend continuellement depuis une surface d'amorçage d'arc à une extrémité de l'électrode de la bougie d'allumage jusqu'à une partie plus froide du moteur. Autour du noyau (20), il y a une couche de protection (22) contre la corrosion provoquée par les températures élevées produites par l'arc.

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