Internal-combustion engines – Igniters – Incandescent
Patent
1984-02-15
1986-07-08
Wolfe, W. R.
Internal-combustion engines
Igniters
Incandescent
219270, 219553, F02N 1700
Patent
active
045986762
ABSTRACT:
A glow plug for an internal combustion engine is disclosed. The glow plug of the present invention comprises a heater support member projecting into a combustion chamber of an internal combustion engine, the heater support member being formed of an electric insulating material; a heater member affixed to the outer surface of the heater support member, the heater member being formed of an electrically conductive, heat- and oxidation-resistant ceramic material; at least three lead wires for power supply embedded in the heater support member, one end of the lead wires being connected each independently to the heater member; and a power switching means interposed between the other ends of those lead wires and a power source for connecting the power source selectively between the lead wires. By the selective connection between the lead wires performed by the power switching means, a plurality of heater elements having different resistance values are formed within the heater member.
REFERENCES:
patent: 3449638 (1969-06-01), Beesch
patent: 4351291 (1982-09-01), Mahaney
patent: 4357526 (1982-11-01), Yamamoto
patent: 4401065 (1983-08-01), Minegishi et al.
patent: 4437440 (1984-03-01), Suzuki et al.
patent: 4486651 (1984-12-01), Atsumi et al.
Atsumi Kinya
Ito Novuei
Kikuchi Tetsuro
Mizuno Naohito
Nippon Soken Inc.
Wolfe W. R.
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