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Ignition Characteristics of Dielectric Barrier Discharge Ignition System under Elevated Pressure and Temperature in Rapid Compression and Expansion Machine

Journal Article
03-16-08-0060
ISSN: 1946-3936, e-ISSN: 1946-3944
DOI: https://doi.org/10.4271/03-16-08-0060
Published June 15, 2023 by SAE International in United States
Ignition Characteristics of Dielectric Barrier Discharge Ignition System under Elevated Pressure and Temperature in Rapid Compression and Expansion Machine
Sector:
Citation: Agrawal, S., Yamamoto, S., Horibe, N., Hayashi, J. et al., "Ignition Characteristics of Dielectric Barrier Discharge Ignition System under Elevated Pressure and Temperature in Rapid Compression and Expansion Machine," SAE Int. J. Engines 16(8):2023, https://doi.org/10.4271/03-16-08-0060.
Language: English

Abstract:

A rapid compression and expansion machine (RCEM) was used to experimentally investigate the ignition phenomena of dielectric-barrier discharge (DBD) in engine conditions. The effect of elevated pressure and temperature on ignition phenomena of a methane/air premixed mixture was investigated using a DBD igniter. The equivalence ratio was changed to elucidate the impact of DBD on flame kernel development. High-speed imaging of natural light and OH* chemiluminescence enabled visualization of discharges and flame kernel. According to experimental findings, the discharges become concentrated and the intensity increases as the pressure and temperature rise. Under different equivalence ratios, the spark ignition (SI) system has a shorter flame development time (FDT) as compared with the DBD ignition system.