Patent ID: 8662049
Filing Date: 2014-03-04
Classification: F02F,Y10T

Abstract:
1. A cast piston for an internal combustion engine having a piston base, a cylindrical piston head adjacent to the piston base and an at least partially hollow piston skirt located on the side of the piston head facing away from the piston base, the piston skirt including a pair of opposing walls each including a pin bore suitable for receiving a pin, wherein the piston comprises at least one supporting rib located at least partially within the piston skirt, and the at least one supporting rib comprises at least one recess on the side facing the piston base, and wherein the at least one supporting rib is connected to the opposing walls of the piston skirt in the vicinity of the pin bores, and wherein the at least one supporting rib runs substantially in parallel to a pin axis defined by the two pin bores and substantially perpendicular to the pair of opposing walls of the piston skirt, and wherein the at least one supporting rib includes an upper edge which presents a convex surface facing away from the piston base.