Method for controlling a corona ignition device

摘要

The invention relates to a method for controlling a corona ignition device that has a high-frequency generator and a resonant circuit that contains an ignition electrode, wherein a primary voltage is fed into the high-frequency generator, the resonant circuit is excited by a secondary voltage generated by the high-frequency generator, and a corona discharge is thus produced at the ignition electrode, a series of values of an electric variable are measured during the excitation of the resonant circuit, it is checked, by evaluating the measured values, whether the corona discharge has transitioned into an arc discharge, and a determination of an arc discharge is responded to by reducing the secondary voltage and thus extinguishing the arc discharge.

主权项

1. A method for controlling a corona ignition device having a high-frequency generator and a resonant circuit that contains an ignition electrode, the method comprising:
feeding a primary voltage into the high-frequency generator, exciting the resonant circuit by a secondary voltage generated by the high-frequency generator, and thereby creating a corona discharge at the ignition electrode; measuring a series of values of an electric variable during the excitation of the resonant circuit; analyzing the measured values to determine whether the corona discharge has transitioned into an arc discharge; and reducing the secondary voltage if an arc discharge is detected and thereby extinguishing the arc discharge; wherein the method is carried out with a running engine, and, after the arc discharge has been extinguished, the secondary voltage is increased during the same engine cycle in which the arc discharge has been extinguished, and a corona discharge is thus recreated.