PISTON OF TWO-PIECE CONSTRUCTION FOR AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to a piston (1) for an internal internal combustion engine, configured as a gallery-cooled piston of two-piece construction which comprises a main body (2) and a ring element (3). The ring element (2) which has a ring zone (18) and a fire land (17) encloses a cooling gallery (15) on the outside, which cooling gallery (15) is delimited on the inside by an intermediate wall (16) which separates the cooling gallery (15) from a combustion-chamber recess (12) which is made in a piston head (10) of the main body (2). The main body (2) and the ring element (3) together form two circumferential dividing planes (4a, 5a) which are offset with respect to one another, to which end in each case two interacting joining webs (6a, 6b; 7a, 7b) of the ring element (3) and of the main body (2) are connected with a material-to-material bond.

主权项

1. Piston (1) for an internal combustion engine configured as a cooling-gallery piston of two-piece construction that consists of a main body (2) and a ring element (3), wherein the ring element (3) with a ring belt (18) and a top land (17) encloses on the outside a cooling gallery (15) that is delimited on the inside by an intermediate wall (16) that divides the cooling gallery (15) from a combustion bowl (12) introduced into a piston crown (10) of the main body (2), and the ring element (3) is joined in a material-to-material bond to the main body (2), characterized in that the main body (2) and the ring element (3) jointly form two circumferential dividing planes (4a-4c; 5a, 5c) offset to each other, to which end two matching, interacting joining webs (6a, 6b; 7a, 7b; 21a, 21b) of the ring element (3) and the main body (2) are joined in a material-to-material bond.