| 摘要 |
PURPOSE: An engine valve device is provided to reduce abrasion between an engine valve and a guide and to make the stable operation of the engine valve by forming a lubrication film. CONSTITUTION: An engine valve device comprises an engine valve(100), a valve guide and a stem seal. The valve guide guides the reciprocation of the engine valve. The stem seal is combined with one end of the valve guide. The stem seal surrounds the engine valve in a columnar direction. The engine valve has an oil port(110) which is micro-processed on the surface surrounded by the valve guide or stem seal. The oil port is formed by laser-processing. |
