CFD 3D Analysis of Charge Motion and Combustion in a Spark-Ignition Internal Combustion Engine under Close-to-Idle ConditionRoberto Bozza, Vincenzo De Bellis, Stefano Fantoni and Donato ColangeloE3S Web Conf., 197 (2020) 06011DOI: https://doi.org/10.1051/e3sconf/202019706011