| 发明名称 | Single-piece oil control ring | ||
| 摘要 | A single-piece oil control ring for a piston may include a body having at least one upper portion and at least one lower portion each facing towards a cylinder wall of an internal combustion engine. At least one of the upper portion and the lower portion may respectively define a first surface extending substantially perpendicular to the body and a receding second surface extending from the first surface substantially at an incline. The first surface may protrude towards the cylinder wall in relation to the second surface. The first surface may have a first area of contact with the cylinder wall, and at least 95% of the first area may contact the cylinder wall. | ||
| 申请公布号 | US9574663(B2) | 申请公布日期 | 2017.02.21 |
| 申请号 | US201314439521 | 申请日期 | 2013.10.31 |
| 申请人 | Mahle Metal Leve S/A;Mahle International GmbH | 发明人 | Ferrarese André;Bruno Rafael A.;Huegel Rudolf |
| 分类号 | F16J9/20;F16J9/26 | 主分类号 | F16J9/20 |
| 代理机构 | Fishman Stewart PLLC | 代理人 | Fishman Stewart PLLC |
| 主权项 | 1. A single-piece oil control ring for a piston, comprising: a body configured to be mounted on a piston groove of the piston and including at least one upper portion and at least one lower portion each having a free end facing towards a cylinder wall of an internal combustion engine; wherein the free end of at least one of the upper portion and the lower portion respectively defines a first surface extending substantially perpendicular to the body and a receding second surface extending from the first surface substantially at an incline, the first surface protruding towards the cylinder wall in relation to the second surface; wherein the first surface has a first area of contact with the cylinder wall, and wherein at least 95% of the first area contacts the cylinder wall; and wherein the second surface defines an acute angle in relation to the first surface, the acute angle being greater than or equal to 30 degrees. | ||
| 地址 | BR | ||