TWO-PART PISTON HAVING AN OPEN COOLING CHANNEL

摘要

The invention relates to a piston (6, 7) of an internal combustion engine, formed by a lower part (1) and an upper part (4), comprising a piston base and a cooling channel, the lower part (1) being connected to the upper part (4) by means of a form-fitting connection. According to the invention, the lower part has a flat joining area with at least one recess and the upper part has a flat joining area as well as an annular recess that extends from the joining area into the lower part, wherein the at least one recess of the lower part is in overlap with a partial area of the annular recess after the form-fitting connection.