公开(公告)号：US11098674B2

公开(公告)日：2021-08-24

申请号：US16477232

申请日：2018-01-10

Applicant: H.E.F.

Inventor： Fabrice Prost ,  Christophe Heau ,  Romain Montelimard

IPC: F02F3/00 ,  F16J1/02 ,  F16J9/00

Abstract: Various implementations include a combustion engine piston, including a skirt in a counter-part and including a first contact area of the piston in the counter-part, a head which extends transverse to a central axis, and a ring carrier which comprises at least two lands and at least two grooves for receiving the rings, including a first land adjoining the head and a second land situated between the first land and the skirt, wherein the lands include at least one contact land having a diameter greater than a minimum diameter of the skirt to form a second contact area of the piston in the counter-part, and wherein at least one contact land comprises a friction-reducing surface coating, formed at least on a radial sector covering an angle of at least 30 degrees, and up to on a single sector covering an angle of 360 degrees.