Journal
APPLIED ENERGY
Volume 189, Issue -, Pages 385-394Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2016.12.055
Keywords
Turbulent jet ignition; Combustion visualization; Ignition enhancement; Controlled autoignition
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Funding
- United States Department of Energy
- National Science Foundation [CBET-1258581]
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Turbulent jet ignition is an advanced pre-chamber ignition enhancement technique for spark ignition engines that uses a discharging jet of hot combusting gases to initiate main chamber combustion. The jet acts as a distributed ignition source, leading to fast burn rates and increased combustion stability. Experiments were performed in an optically accessible rapid compression machine using liquid isooctane to study the effects of auxiliary fuel injection and ignition distribution due to nozzle geometry. A custom low-flow fuel injector was used to overcome previous limitations of using liquid fuel in the pre-chamber. Jet induced autoignition behavior was also studied in depth by considering high-speed images, pressure traces, and pressure derivative data. Published by Elsevier Ltd.
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