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A Study of Ignition Method for Gas Heat Pump Engine Using Low Temperature Plasma

Journal Article
2019-32-0622
ISSN: 2641-9637, e-ISSN: 2641-9645
DOI: https://doi.org/10.4271/2019-32-0622
Published January 24, 2020 by Society of Automotive Engineers of Japan in Japan
A Study of Ignition Method for Gas Heat Pump Engine Using Low Temperature Plasma
Sector:
Citation: Moriyoshi, Y., Matsumoto, O., Kuboyama, T., Tsukamoto, T. et al., "A Study of Ignition Method for Gas Heat Pump Engine Using Low Temperature Plasma," SAE Int. J. Adv. & Curr. Prac. in Mobility 2(2):1067-1073, 2020.
Language: English

Abstract:

Low temperature plasma ignition has been proposed as a new ignition technique as it has features of good wear resistance, low energy release and combustion enhancement. In the authors’ previous study, lean burn limit could be extended by low temperature plasma ignition while a voltage drop during discharge, leading to the transition to arc discharge, was found. In this study, the structure of plug and power supply’s performance with steep voltage rising with time, dV/dt, are examined to investigate the effects on combustion performance. As a result, comparing three power sources of conventional, IES and steep dV/dt, steep dV/dt showed small cycle-to-cycle variation and shorter combustion period, leading to higher peak value of the rate of heat release and better indicated thermal efficiency by relatively 6% and 4% compared to CIC and IES, respectively.