MEASUREMENT OF THE IONISATION CURRENT OF AN IGNITION SYSTEM OF AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to the measurement of the ionisation current of an ignition system of an internal combustion engine. The device for measuring the ionisation current from a spark plug (4) installed in an ignition system of an internal combustion engine includes a polarisation module, a conversion module (6) for converting the ionisation current from the polarisation module (5) into an ionisation voltage, a measurement module (7) suitable for measuring an ignition noise voltage generated by said spark plug (4), and a calculation module (8) suitable for calculating a corrected ionisation voltage based on a difference between said ionisation voltage from the conversion module (6) and said ignition noise voltage.