Adaptive ignition dwell based on ionization feedback

Details Adaptive ignition dwell based on ionization feedback Adaptive ignition dwell based on ionization feedback

2008-01-15

2008-01-15

Kwon, John T. (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

C123S406140, C701S111000

Reexamination Certificate

active

11627756

ABSTRACT:
A system for determining a minimum ignition coil charge duration of an internal combustion engine to meet a desired level of combustion stability includes a sensor in communication with a controller. The sensor is configured to measure the ionization current of a cylinder of the internal combustion engine and output to the dwell controller. The controller is configured to determine a combustion stability criterion based upon the ionization signal and determine the minimum ignition coil charge duration based upon the combustion stability criterion.

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