| 摘要 |
<p>PURPOSE:To avoid flow rate resistance caused by an intake-air inertial pipe by separating intake-air pipes into two groups and providing a three-way connecting valve, which allows a short circuit passage to be connected to a connection point from a damping chamber. CONSTITUTION:Since the discharge pressure of a blower 4 is low in the low revolving speed region, the supply-air pressure introduced in a three-way connecting valve 12 from a short circuit passage 32 is not high enough to overcome the spring force of a spring 15, and a piston valve body 13 is closed. The upper and lower intake-air inertial pipes are not connected with each other, and the supply-air from a blower 4 is supplied to intake-air inertial pipes 8 and 9. On the other hand, since the discharge pressure of the blower 4 rises for the high revolving speed region, the piston valve body 13 is opened. And the upper and lower intake-air inertial pipes 8 and 9 are connected with each other, thereby supplying the air from the short circuit passage 11 as well. Thus, intertial pipes 8 and 9 can be reduced.</p> |
