The multi-spark ignition system produces multiple sparks during each firing cycle.

The multi-spark ignition system produces multiple sparks during each firing cycle.

• A. True
• B. False
• C. Not Sure
• D. Sometimes

Answer: (A)

Multiple-spark ignition intentionally fires several sparks within one ignition event. This happens in a short window around the timing when the air–fuel mixture is about to ignite, with the ignition module delivering a sequence of sparks in quick succession. The goal is to boost the chance that the mixture ignites reliably, especially under challenging conditions like lean mixtures, higher cylinder pressure, or a marginal plug. Because multiple sparks are produced per firing cycle, misfires are reduced and overall combustion stability improves, which is why this approach is used. Some systems may vary the exact number of sparks, but the core behavior is that more than one spark occurs during each ignition event.

Multiple-spark ignition intentionally fires several sparks within one ignition event. This happens in a short window around the timing when the air–fuel mixture is about to ignite, with the ignition module delivering a sequence of sparks in quick succession. The goal is to boost the chance that the mixture ignites reliably, especially under challenging conditions like lean mixtures, higher cylinder pressure, or a marginal plug. Because multiple sparks are produced per firing cycle, misfires are reduced and overall combustion stability improves, which is why this approach is used. Some systems may vary the exact number of sparks, but the core behavior is that more than one spark occurs during each ignition event.