| 摘要 |
<p>PURPOSE:To aim at enhancing the intake performance of a swing valve, by forming a large size intake passage in a swing block. CONSTITUTION:A swing rock 4 adapted to swing around a swing shaft 16 is disposed in a housing 3. Further, a Y-shape discharge passage which is communicated two suction ports 9, 10 adapted to be align with either one of a pair of cylinders 5, 6 opened to the inside of the housing 3 at a predetermined interval, with a discharge port 11 that always aligns with a discharge pipe 7, is disposed in the swing block 4. Further, an outlet port 8 which is opened between the suction ports 9, 10 and aligns with either one of the pair of cylinders 5, 6, and a suction passage 14 communicated with a large size receiving port 12 which may be opened upward, are formed in the swing block 4. With this arrangement, it is possible to enhance the intake performance.</p> |
