Plasma kinetics study of a repetitive 10-NS pulsed plasma ignition for combustion

摘要: Combustion efficiency and rate of ignition were shown to be improved when fuel-air was initiated with highly non-equilibrium plasmas generated by highvoltage, nanosecond pulses, also known as transient plasma (TPI). In order optimize the pulse power parameters for combustion, detailed experimental investigations effect risetime repetition frequency (PRF) conducted atmospheric pressure static methane/air ignitions. Plasmas driven 10 ns, 12 kV pulses at a range PRF from 1 kHz 10kHz combustion conventional spark plug electrode configuration. Experiments revealed that different mode in fuel/air mixture ignited. At constant duration PRF, this occurred earlier faster rise time (e.g. 4 ns) compared longer one 8 [1]. addition, favored change or ignition. Importantly, kinetics reactive species during TPI investigated using optical emission spectroscopy (OES). Filtered high speed imaging combination electrical measurements are help understand rotational temperature related is times PRFs width ns. Gas repetitively pulsed discussed measuring second positive systems nitrogen N2 (C-B).