“Moreover, multi-pulse transient plasma ignition offers more stable ultra-lean operation, with IMEPn variability less than 5% down to ϕ = 0.49”
Magnus Sjöberg, Wei Zeng, Daniel Singleton, Jason M. Sanders and Martin A. Gundersen
SAE International Journal of Engines
Vol. 7, No. 4 (October 2014), pp. 1781-1801