FUNCTIONALLY OPTIMIZED DESIGN OF THE PISTON-RING FIELD REGION IN STEEL PISTONS

摘要

The invention relates to a piston (1) of an internal combustion engine made of steel guided in a cylinder jacket (2), said piston comprising a piston top (6) and a piston shaft. A piston base (7) transitions on the circumference into a fire land (8) to which a ring field (9) intended to accommodate piston rings (3, 4) adjoins. The piston rings (3, 4) are positioned at a distance from one another in the ring field by a ring land (12). The ring land (12) is guided up to the cylinder jacket (2) while maintaining a narrow play and includes a release groove (13) located at a distance from the first annular groove (10) and the second annular groove (11), said release groove having a smaller depth compared to the second annular groove (11) and flanks running at a different incline.