High voltage ignition system monitor for spark initiated interna

Details High voltage ignition system monitor for spark initiated interna High voltage ignition system monitor for spark initiated interna

1989-09-15

1991-10-08

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Gaseous discharge

324 96, 324395, G01R 31024, G01R 3122

Patent

active

050557726

ABSTRACT:
A method and device for continuously monitoring the distributed high voltage pulses from an ignition coil of an electrical system of an internal combustion engine is disclosed. The device is a transparent enclosure filled with a noble gas at low pressure. The inner wall of the enclosure is coated with a light emitting phosphor and a small amount of mercury is placed within the enclosure. When the device is placed near a high voltage wire, an electric field capacitively couples to and ionizes the gas within the device. The mercury is excited and emits photons of ultraviolet radiation which in turn creates visible light as the ultraviolet radiation excites the phosphor coating. When this device is placed next to a spark plug wire, it will illuminate when there are high voltage pulses in the wire. In a preferred embodiment two or more enclosures are placed near the same wire. The enclosures contain different gas pressures and are excited at different voltages. This gives a quantitative measure of the high voltage pulse in the wire.

REFERENCES:
patent: 1796637 (1931-03-01), Trugner
patent: 3141107 (1964-07-01), Wasserman
patent: 3242366 (1966-03-01), Candelise
patent: 3348087 (1967-10-01), Smith
patent: 3369175 (1968-02-01), Morris
patent: 3521157 (1970-07-01), Robertson
patent: 4032814 (1977-06-01), Shurgan
Sanford; C. Brown, "Basic Data of Plasma Physics", pp. 145, 240 (1959).
1988 J. C. Whitney & Co., Automotive Parts & Accessories, p. 178.

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