Patent ID: 11939944
Assignee: ELDOR CORPORATION S.P.A.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 6:
7. The electronic ignition system according to claim 1, wherein the bias circuit comprises a connection in parallel of a bias capacitor and of a further Zener diode, the further Zener diode having an anode terminal connected to the integrating circuit and having a cathode terminal connected to the second terminal of the secondary winding,
wherein the bias capacitor is configured to:
charge during the phase of transfer of energy, by means of the current flowing through the secondary winding generated by the spark of the spark plug;
discharge at least partially by means of the ionization current during the phase of measurement of the ionization current;

wherein during the phase of transfer of energy the further Zener diode is reversely biased and it is configured to limit the voltage across the bias capacitor during its charging to a maximum defined value equal to the Zener voltage of the further Zener diode.