Rapid heat-dissipating type spark plug for internal combustion e

Details Rapid heat-dissipating type spark plug for internal combustion e Rapid heat-dissipating type spark plug for internal combustion e

1989-08-21

1991-05-21

O'Shea, Sandra L.

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313141, 123169EL, H01T 1320

Patent

active

050178261

ABSTRACT:
A rapid heat-dissipating type spark plug has a metallic shell which is made of material having a tensile stress of more than 40 Kg/mm.sup.2 with a thermal conductivity of more than 60 W/m.multidot.k.
In another embodiment, there is provided a ground electrode which is made of nickel or nickel alloy.
The ground electrode is connected to the metallic shell through a metallic ring which is made of different metal from the metallic shell such as steel, stainless steel or nickel alloy.

REFERENCES:
patent: 4539503 (1985-09-01), Esper et al.
patent: 4814665 (1989-03-01), Sakura et al.

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