PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR ITS PRODUCTION

摘要

A method for the production of a piston for an internal combustion engine, having a piston head, a piston skirt, and a circumferential recess configured between the piston head and the piston skirt. The piston has a piston base body and a piston ring element. The piston base body has at least a crown region of a combustion bowl as well as the piston skirt. The piston ring element has at least a piston crown, a wall region of the combustion bowl, a circumferential top land, and a circumferential ring belt with ring grooves. The piston ring element has a circumferential cooling channel between the wall region of the combustion bowl and the ring belt, closed with a closure element. The piston base body and the piston ring element are connected by a circumferential joining seam in the region of the combustion bowl.

主权项

1. A method for the production of a piston for an internal combustion engine, the piston having a piston base body and a piston ring element and a ring-shaped recess configured between a piston head and a piston skirt, the method comprising the following steps:
(a) making available a blank of a piston base body that has at least a crown region of a combustion bowl, the piston skirt, as well as a joining surface in a region of the combustion bowl; (b) making available a blank of a piston ring element that has at least a piston crown, a wall region of a combustion bowl, a circumferential recess, as well as a joining surface in the region of the combustion bowl; (c) connecting the blank of the piston base body with the blank of the piston ring element by way of their joining surfaces, to produce a piston blank; and (d) reworking or finishing the piston blank to produce the piston.