Self-control type glow plug

Patent · Tue Jan 13 00:00:00 EST 1987

OSTI ID:6885347

Itoh, T; Yokoi, S

A self-control type glow plug is described for use in an engine, the plug comprising: means including a shell member for mounting the glow plug to the engine; heat generating means comprised of a sintered ceramic body and a heating wire embedded therein, the heating wire having terminal ends located outside the ceramic body for establishing electrical connections and the ceramic body being connected to extend from the shell member. The heating wire consists essentially of a tungsten alloy having a temperature resistance coefficient at 1000/sup 0/C. no greater than four times that at room temperature; and a current control resistor electrically connected in series with the heating wire of the heat generating means for controlling the temperature of the heat generating means. The resistor comprises a wire having a positive temperature resistance coefficient at 1000/sup 0/C. no less than five times that at room temperature, wherein the heating wire consists essentially of tungsten alloyed with 2 to 50 wt % rhenium.

• Assignee: NGK Spark Plug Co., Ltd., Nagoya
• Patent Number(s): US 4636614
• OSTI ID: 6885347
• Resource Relation: Patent File Date: Filed date 8 Jun 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
SPARK IGNITION ENGINES
GLOW DISCHARGES
IGNITION SYSTEMS
CERAMICS
ELECTRIC CONTACTS
HEATING
METALLURGICAL EFFECTS
RHENIUM ALLOYS
SINTERED MATERIALS
THERMAL CONDUCTIVITY
TUNGSTEN ALLOYS
VERY HIGH TEMPERATURE
WIRES
ALLOYS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ENGINES
EQUIPMENT
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MATERIALS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
330101* - Internal Combustion Engines- Spark-Ignition