Patent ID: 8671905

Claim:
A piston for an internal combustion engine, comprising a piston head that has a closed circumferential cooling channel as well as a combustion bowl with a circumferential bowl wall that makes a transition into a piston crown by way of a bowl edge region, wherein the combustion bowl is formed at least in part by a piston base body and the bowl wall is formed at least in part from an insert, wherein the insert is connected with the piston base body by beam welding, wherein a lower weld seam is configured in the bowl wall, which seam encloses an acute angle with a piston center axis (M) and ends in a lower half of the cooling channel, and wherein an upper weld seam runs from a cooling channel ceiling to the piston crown and is disposed centered or radially offset toward an outside, with reference to a clear width (W) of the cooling channel, and wherein the lower weld seam and the upper weld seam enclose an acute angle.