Piston for IC engine has curved connection walls between bolt hubs and piston shaft sections, with continuously decreasing thickness of walls

摘要

The piston has four curved connection walls (6,6',6'',6''') between bolt hubs (7,7') and piston shaft sections (4,5). The wall curve follows the shape of the shaft sections, and the center (M) of the circular section formed by the radius (R) is located inside the piston. The thickness of the connections walls decreases continuously from the bolt hubs to the piston shaft sections, and the walls end in the outer end areas (10) of the bolt hubs. The piston is cast with a one-part core.