Experimental investigation of cyclic variations in HCCI combustion parameters for gasoline like fuels using statistical methods.

Highlights: [•] Combustion phasing is analyzed by fitting probability density functions. [•] Combustion stability improves on increasing intake air temperature. [•] Test conditions with late start of combustion have larger cyclic variations. [•] Large deviations from normal distribution in combustion duration for knocking/misfire. [•] GEV distribution covers full range of distribution shapes for combustion duration/phasing. [Copyright &y& Elsevier]