| 摘要 |
<p>There is described an oil control ring (1) idealized for internal combustion engines and formed by a ferrous body less than 2.0 millimeters high, which comprises two external contact surfaces (102) where each surface (102) contains a first (22) and a second (23) end ridges, two slanted faces (3) where each slanted face (3) contains a third end (32), a peripheral cross section (4) facing the cylinder wall (5) and an internal circular section (6) facing the side of the piston (7), where each contact surface (102) has a height (h) between the first (22) and the second (23) end ridges of up to 0.15 millimeters and the angle of the slanted face (3) is comprised between 8 and 12 degrees and also by the peripheral cross section (4) is solid, without the presence of cracks, holes and/or other kinds of oil drainage areas. The ring (1) permits an improved distribution of the contact pressure of the combination and, therefore, a better conformability of the ring with the cylinder wall.</p> |
