| 摘要 |
<p>The present invention relates to an engine valve apparatus including: engine valves (100); valve guides (200) configured to guide a reciprocating motion of the engine valves (100); and stem seals (300) fitting on one end of each of the valve guides (200) and circumferentially covering the engine valves, in which the engine valves (100) have micro-machined oil ports (110) on the surfaces surrounded by the valve guides (200) or the stem seals (300).</p> |
