Ignition apparatus
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United States of America Patent
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Nov 23, 2021
Grant Date -
Dec 20, 2018
app pub date -
Jun 13, 2018
filing date -
Jun 14, 2017
priority date (Note) -
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Abstract
In an ignition apparatus, an ignition plug is provided. In the ignition plug, a tubular outer conductor surrounds an inner conductor, and a dielectric member is disposed in the tubular outer conductor to define a plasma formation region between the inner conductor and the dielectric member. The plasma formation region has opposing first and second ends in the axial direction of the tubular outer conductor, and the first end of the plasma formation region communicates with the combustion chamber. A power source is connected between the inner and tubular outer conductors. A controller causes a power source to apply electromagnetic power pulses with intervals therebetween across the inner and tubular outer conductors during an ignition cycle of an engine. Each of the electromagnetic power pulses forms at least a corresponding plasma in the plasma formation region.
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