| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve dynamic characteristics in a pilot governor 1 while maintaining excellent static characteristics. <P>SOLUTION: The governor 1 comprises: a main governor 3 provided on a feed passage 2; a driving pressure feeding mechanism that includes throttling parts 43 and 66 on a primary adjustment passage 41 and feeds a driving pressure to a pressure sensing chamber (a first chamber) 33 of the main governor 3; a control mechanism that includes a pilot governor 5 on a secondary adjustment passage 42 and controls actuation of the main governor 3; and throttling feature changing means that changes a throttling feature relating to pressure drop of the driving pressure feeding mechanism. The throttling feature changing means changes the throttling feature to have relatively small pressure drop to a change in flow when a differential pressure between a primary pressure P1 and a driving pressure Pc is equal to or greater than a predetermined value, but it changes the throttling feature to have relatively large pressure drop to the change in flow when the differential pressure is less than the predetermined value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
