Coreless detector for ignition dischage current
AssigneeSimmonds Precision Engine Systems, Inc.
InventorDavid N. Owens
Life of this patent
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Abstract
In combination, a gas turbine engine ignition system exciter, an igniter, a conductor that connects the exciter to the igniter to form a discharge circuit, and a current pulse detector for detecting current pulses in the circuit, the detector comprising a wire disposed in close proximity to a current carrying element in the circuit so that a sense current is induced in the wire across a coreless gap; the detector further comprising a signal conditioning circuit for converting the sense current to an output that indicates occurrence of a spark discharge.
Claims5
In combination, a gas turbine engine ignition system exciter, an igniter, a conductor that connects the exciter to the igniter to form a discharge circuit, a current pulse detector for detecting current pulses of an igniter discharge in said discharge circuit, said detector comprising a wire disposed in close proximity to a current carrying element in said circuit so that a sense current is induced, by said current pulses, in said wire across a coreless gap;
- and a signal conditioning circuit that converts said sense Current to a diagnostic voltage representative of the igniter discharge and that stores said diagnostic voltage for a sampling time period that is less than a discharge interval and long enough for diagnostic detection.
Dependencies are inferred from the claim text.