Spark plug having a noble metal electrode tip

Details Spark plug having a noble metal electrode tip Spark plug having a noble metal electrode tip

1996-04-26

1996-11-26

Patel, Nimeshkumar

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313144, 313142, H01T 1320

Patent

active

055788955

ABSTRACT:
In a spark plug which has an electrode metal made from a heat- and erosion-resistant nickel alloy whose front end has a noble metal tip made of iridium or ruthenium, the electrode metal has a thermal conductivity of at least 30 W/m.multidot.K so as to avoid rapid temperature rise in the noble metal tip to thereby minimize oxidation-evaporation and attendant wear thereof.

REFERENCES:
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patent: 4329174 (1982-05-01), Ito et al.
patent: 4581558 (1986-04-01), Takamura et al.
patent: 4670864 (1987-06-01), Kagawa et al.
patent: 4771210 (1988-09-01), Mohle et al.
patent: 4853582 (1989-08-01), Sato et al.
patent: 5101135 (1992-03-01), Oshima
patent: 5347193 (1994-09-01), Oshima et al.
Abstract of Japanese Patent Publication 5-101869, vol. 17, No. 450 (E-1416), 23 Apr. 1993.
Patent Abstracts of Japan, vol. 8 No. 71 (C-217) JP-A-58 224140, 26 Dec. 1983.

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