Built piston for internal combustion engine consists of upper part with bearing edge, recess and nose part on bottom and under part shaped to form a shrink fit with upper part thereby joining them together

摘要

Piston (3) consists of an upper part (1) with a bearing edge (11) on the underside of the piston floor (4) with open recess (12) making a nose part (21) facing the floor, and a lower part (2) whose contour forms a shrink fit with the recess via which the upper and lower parts are joined together. The surfaces of the nose and recess placed in contact with one another lie in a longitudinal section parallel to the lengthwise axis (27) of the piston.