Self temperature control type glow plug

Details Self temperature control type glow plug Self temperature control type glow plug

1985-08-12

1988-02-16

Bartis, Anthony

Electric heating

Heating devices

Resistive element: igniter type

123145A, 219505, 219539, 219544, 219553, 338 22R, 338238, 361266, F23Q 722, F02P 908, H05B 302

Patent

active

047257113

ABSTRACT:
A self-regulating temperature controlled glow plug has a hollow metal holder, a rod-like ceramic heater and a power control heater. The ceramic heater extends from one end of the holder and has embedded therein a first resistor of tungsten alloyed with rhenium or molybdenum. The power control heater includes a second resistor embedded in a dense mass of powdered insulation material filling a tubular metallic sheath. The sheath is positioned in the holder with its central portion held in spaced relationship thereto by a thermally insulating spacer at least one end thereof. The second resistor is made of tungsten, iron or nickel, has a positive temperature coefficient of resistance at least equal to and a heating capacity greater than the first resistor, and is connected in series with the first resistor.

REFERENCES:
patent: 2030937 (1936-02-01), Reichman
patent: 2492755 (1949-12-01), McCollum
patent: 4107510 (1978-08-01), Tombs et al.
patent: 4359977 (1982-11-01), Sperner et al.
patent: 4502430 (1985-03-01), Yokoi et al.
patent: 4545339 (1985-10-01), Brooks et al.

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