M.a.n. Maschinenfabrik Augsburg-nurnberg A.g.

Welf Amende

Wolfram Lausch

Hartwin Zechmeister

In order to prevent the formation of fissures or tears in the walls of cylinders of an internal combustion engine, hardening tracks (4) generated by a carbon dioxide laser, are placed parallel to each other at an angle of inclination (.alpha.) with respect to the axis (3) of the wall of the cylinder or cylinder liner, and spaced from each other by a distance (X) which is greater than twice the distance (k) between the maxima (9, 10) of tension resulting in the operation of the ICE from the edges of the hardening track, thereby satisfying the condition: X is greater than 2.times.k.

Growing community of inventors

Munich, Germany

Welf Amende