Glow plug having a series connection of resistant filaments

Details Glow plug having a series connection of resistant filaments Glow plug having a series connection of resistant filaments

1989-07-21

1992-02-25

Reynolds, Bruce A.

Electric heating

Heating devices

Resistive element: igniter type

219205, 219504, 219505, 219552, 219553, 123145R, 361266, F23Q 722

Patent

active

050916319

ABSTRACT:
A glow plug for an air compressing internal combustion engine of the type having a tube which is closed at one end and connected to a plug housing on an opposite end with a wire filemant-like resistance element disposed in an insulating material within the tube and formed two series-connected resistance filaments, of which the rear resistance filament, serves as a regulating filament, having a higher positive temperature resistance coefficient than the front resistance filament, which serves as a heating filament, is improved so as to enable the heating up time to be reduced without adversely impacting upon the effective life of the glow plug. In accordance with various embodiments, this result is achieved through the use of, for example, special alloys for the material of the regulating filament which have a resitance at 1000.degree. C. that is greater than their resistance at 20.degree. C. by a resistance ratio over about 7.5:1, and preferably greater than 12:1, and in particular, about 14:1.

REFERENCES:
patent: 4556781 (1985-12-01), Bauer
patent: 4582980 (1986-04-01), Izzi
patent: 4733053 (1988-03-01), Mueller
Werkstoffkunde Stahl, p. 646, vol. 2.

Affiliated with

Also associated with

Rating

Glow plug having a series connection of resistant filaments does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Glow plug having a series connection of resistant filaments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glow plug having a series connection of resistant filaments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1894710