Method for producing a piston

Abstract

The invention relates to a method for producing a piston (1) for an internal combustion engine, characterised by the following method steps: producing an upper piston part (2) and a lower piston part (3) having one or more recesses (4, 4′) for forming a closed cavity (5); introducing a heat transfer medium (6), in particular one or more alkali metals, that is solid or paste-like at ambient temperature and liquid at the intended operating temperature of the piston, into the recesses (4, 4′) of the lower piston part (3) and/or of the upper piston part (2), wherein the heat transfer medium (6) is provided in order, during the operative state of the piston (1), to effect heat transport within the piston (1) by convection; closing the recesses to form the closed cavity (5) which encloses the heat transfer medium (6); and connecting the upper piston part (2) to the lower piston part (3). This enables the piston (1) to be produced in a simplified manner.

Dependencies are inferred from the claim text.