Patent ID: 7267045

Claim:
An internal combustion engine for a motor vehicle, having: a piston bearing surface ( 1 ) divided into regions of different loading, the piston bearing surface regions delimited by a top dead center piston location ( 2 ) and being provided with recesses ( 3 ) for holding lubricant, the distances between the recesses being shorter in regions of high loading than in regions of lower loading, and in a region with high loading the distance between the recesses ( 3 ) decreasing from one recess ( 3 ) to the next in the direction toward the top dead center location ( 2 ), so that the distances are smallest at the top dead center location ( 2 ) and in a region of medium loading the distances between the recesses ( 3 ) are constant, said recesses ( 3 ) being stochastically distributed and the distribution density increasing toward the top of the dead center location.