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Matching Ignition System Multi-Spark Calibration to the Burn-Rate of an Engine to Extend Ignitability Limits
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Abstract
“Multi-Spark” refers to the charging and discharging of an ignition coil multiple times during a single combustion event. This paper attempts to use multi-sparking to achieve an effect similar to a long duration spark to enhance combustion during slow burn conditions.
Although multi-sparking is more typical of capacitive discharge (CDI) ignition systems, this paper discusses the multi-sparking of Kettering ignition systems to achieve the benefits of multi-sparking without CDIs' cost, packaging, complexity and reliability issues.
The goal of the multi-spark calibration is to successfully initiate flame kernal development with the first spark discharge and add supplemental energy fast enough through restriking to prevent the flame kernal from quenching.
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Citation
Czekala, M., Johnston, B., Morganti, C., and McRoy, G., "Matching Ignition System Multi-Spark Calibration to the Burn-Rate of an Engine to Extend Ignitability Limits," SAE Technical Paper 981046, 1998, https://doi.org/10.4271/981046.Data Sets - Support Documents
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References
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