| 摘要 |
PURPOSE:To improve durability of a valve plate portion by coupling the valve plate disposed between an intake port and a discharge port in a cylinder and an end plate integrally with the end plate to prevent blow-by cavitation. CONSTITUTION:A valve plate 17 engages an end plate 150 provided with an intake port 15 and a discharge port 16. The valve plate 17 and end plate 150 made of special material are firmly diffusion connected to each other in a diffusing portion 50. Thus, the durability of the valve plate portion is improved while blow-by cavitation between the valve plate 7 and end plate 150 can be completely prevented. |
