Piston crown with double re-entrant piston bowl

摘要

The disclosure relates to a piston crown comprising a face and a piston bowl recessed within the face. The piston bowl comprises an entry side a bottom side opposite the entry side, a restriction between the entry side and the bottom side, an re-entrant portion at the bottom side and an annular side surface extending between the entry side and the restriction. The annular side surface at least partly defines a space widening in the direction of the restriction.