Experimental characterisation of the thermal energy released by a Radio-Frequency Corona Igniter in nitrogen and air

G. Discepoli, V. Cruccolini, F. Ricci, A. Di Giuseppe, S. Papi and C.N. Grimaldi

Applied Energy, 2020, vol. 263, issue C, No S030626192030129X

Abstract: The Radio-Frequency Corona Ignition System is characterised by a wide initial combustion volume and precursors production, via radical insemination by the streamers, in addition to high released thermal energy. These features lead to faster combustion, a higher tolerance for lean mixtures and EGR dilutions and, in general, more adaptability. The thermal energy released by the igniter to the surrounding medium can help to understand the performance, the behaviour and the application range. This paper proposes a systematic experimental analysis of the thermal energy released by the igniter at room temperature, via pressure-based calorimetry. This analysis, carried out at different pressures (up to 10 bar) and medium type (air or nitrogen), is extended to the whole range of the corona igniter control parameters, namely streamer duration and driving voltage. The latter is proportional to the maximum electrode voltage, as shown in the model here presented, and as confirmed by experiments.

Keywords: Corona streamer; Discharge thermal energy; Thermal efficiency; Plasma assisted ignition; Pressure-based calorimetry (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (3)

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DOI: 10.1016/j.apenergy.2020.114617

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