FIELD: engines.
SUBSTANCE: present invention relates to methods and systems for vehicle engine control to reduce pre-ignition events. In response to a late burn combustion event in a cylinder, ignition coil dwell time is extended in the cylinder to reduce unintended combustion delays. In addition, pre-ignition mitigating actions are performed in a neighboring cylinder that may be prone to pre-ignition induced by the late combustion event.
EFFECT: technical result: temporary increase of power of burn induced cylinder that uses ignition delay, and lesser engine operation deterioration caused by pre-ignition.
18 cl, 4 dwg
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