Method for measuring an ionization current of a spark plug of the type with resonant structure and corresponding device
AssigneeRENAULT s.a.s.
InventorsAndre Agneray, Clement Nouvel
Life of this patent
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Abstract
A device for measuring an ionization current of a spark plug of a type with a resonant structure, including a motor vehicle ignition system, the spark plug being coupled to a generator including a regulating capacitor. The generator includes a polarizer that polarizes the spark plug, connected between the generator and the spark plug, and a device that measures ionization current of the spark plug, connected between the regulating capacitor and ground.
Claims9
1-8. (canceled)
A method of measuring an ionization current of a resonant structure spark plug, used in an ignition system for a motor vehicle, in which, during an ignition phase, the spark plug is powered by a voltage generated using a previously charged control capacitor, the method comprising:
- measuring an ionization current periodically, between two ignition phases, between the control capacitor and ground, after having polarized the spark plug.
A device for measuring an ionization current of a resonant structure spark plug, used in an ignition system for a motor vehicle, the spark plug being coupled to a generator including a control capacitor, the generator comprising polarization means to polarize the spark plug, connected between the generator and the spark plug, and means to measure the ionization current of the spark plug, connected between the control capacitor and ground.
Dependencies are inferred from the claim text.