| 摘要 |
<p>The assembly, mounted on a piston rod, is constructed as a piston body (1) having a cylindrical skirt and oil passages (4a) between the skirt and a cylindrical core (3) for fastening to the piston rod, and a double-acting floating valve in the form of an annular plate mounted with a specific prestress between a bearing zone (8) of the cylindrical skirt of the piston body (1) on the outside and a bearing member on the inside. The outer part of the bearing zone of the cylindrical skirt is cut in such a way that the bearing surface (8) is different from a surface contained between two circles concentric relative to the axis of the piston body (1), for example delimited by a polygon with concave sides (19), so that the change from laminar flow to turbulent flow during a rapid compression movement does not take place simultaneously over the entire circumference of the divergent oil stream.</p> |
