An investigation of multiple spark discharge using multi-coil ignition system for improving thermal efficiency of lean SI engine operation

Dongwon Jung and Norimasa Iida

Applied Energy, 2018, vol. 212, issue C, 322-332

Abstract: Lean spark ignition (SI) engine operation can provide improvement of the thermal efficiency relative to that of stoichiometric SI operation. However, the cycle-to-cycle variations of SI combustion increase with increasing air dilution, and become unacceptable. To gain the benefits of lean operation, the ability to ensure stable, complete and fast combustion is required. As a method to enable stable lean operation, this study investigates the effects of multiple spark discharge on lean SI operation using a multi-coil ignition system that features ten spark coils for a single spark plug.

Keywords: SI combustion; Lean burn; Multiple spark discharge; Spark discharge energy; Thermal efficiency; Combustion phasing (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (20)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:212:y:2018:i:c:p:322-332

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DOI: 10.1016/j.apenergy.2017.12.032

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