Piston with flush connecting wall sections at pin boss surface

In a piston for internal combustion engines having substantially circular sleeves,

• a piston skirt having a diameter, thrust and counter-thrust sides and being substantially closed along its periphery,
• pin bosses set back with respect to the piston skirt diameter in the direction towards the piston axis to an extent that the spacing between the outer pin boss surfaces corresponds to 60 to 80% of a piston diameter,
• two supporting skirt wall sections on the piston skirt on the thrust and counter-thrust sides to receive transverse forces,
• the supporting skirt wall section on the thrust side being larger at least in the peripheral direction of the skirt than the supporting skirt wall on the counter-thrust side, and two wall sections connecting the supporting skirt wall sections which are respectively continuously convexly curved outwards along the periphery of the piston skirt at least at the open ends of the skirt, the improvement comprising
• the connecting wall sections bordering in a circumferential direction from the pin bosses being positioned with their outer surfaces passing flush into the outer surfaces of the pin bosses, and extending convexly from the respective supporting skirt wall to the outer pin boss surface.