Internal-combustion engines – Igniters
Reexamination Certificate
2006-04-19
2008-12-23
Vu, David Hung (Department: 2821)
Internal-combustion engines
Igniters
C123S620000
Reexamination Certificate
active
07467612
ABSTRACT:
An ignition circuit and a method of operating an igniter (preferably a traveling spark igniter) in an internal combustion engine, including a high pressure engine. A high voltage is applied to electrodes of the igniter, sufficient to cause breakdown to occur between the electrodes, resulting in a high current electrical discharge in the igniter, over a surface of an isolator between the electrodes, and formation of a plasma kernel in a fuel-air mixture adjacent said surface. Following breakdown, a sequence of one or more lower voltage and lower current pulses is applied to said electrodes, with a low “simmer” current being sustained through the plasma between pulses, preventing total plasma recombination and allowing the plasma kernel to move toward a free end of the electrodes with each pulse.
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Selmon, III Frederick H.
Suckewer Artur P.
Suckewer Szymon
Knite, Inc.
Vu David Hung
Wolf Greenfield & Sacks P.C.
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