Diagnosis of the fouling condition of sparkplugs in a radiofrequency ignition system
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United States of America Patent
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Nov 27, 2012
Grant Date -
Aug 19, 2010
app pub date -
Jun 4, 2008
filing date -
Jun 12, 2007
priority date (Note) -
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Abstract
A radiofrequency ignition device including: a control capable of generating an ignition control signal; a supply circuit controlled by the ignition control signal for applying a supply voltage on an output interface of the supply circuit at a frequency defined by the control signal; at least one plasma generation resonator connected on an output interface of the supply circuit and capable of generating a spark between two ignition electrodes of the resonator upon an ignition control; a mechanism measuring an electric parameter representative of a variation in a supply voltage of the resonator; and a module determining the fouling condition of the electrodes based on the measured electric parameter and on a predetermined reference value.
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