The piston (1) has a gudgeon pin boring (5) which is set back on both sides to form an increased-diameter recess (13) relative to the external surface (17) of the piston. The grooves for the gudgeon pin securing rings are in these recesses. The gudgeon pin...

Pistons of internal combustion engines are thermally highly stressed components, especially in the area of the piston crown (4) and the piston ring zone (1). It is therefore necessary to provide adequate cooling while simultaneously reducing piston weight....