| 摘要 |
PURPOSE: To insulate vibration by setting an interval between a release valve and a conduit connection part such that liquid quantity in a conduit makes relative motion at the same phase with a support when vibration equivalent to a no-load rotation number is transmitted to the support. CONSTITUTION: When vibration of an equivalent frequency to a no-load rotation number of a piston engine is transmitted to a support 2, liquid quantity contained in a conduit 7 makes relative motion at the same phase with the support 2. This motion has a larger amplitude than an amplitude of the support 2 multiplied by a ratio of a volume displacement cross section A2 of a spring member to a cross sectional surface A3 of the conduit 7. The piston engine is thus supported by a spring weight which is more flexible than that at the time of a high engine rotation number or when the engine is stopped, and vibration of the engine can be insulated when the no-load rotation number is reached. This device is composed in such a way that move of liquid is not prohibited by disconnection of the conduit 7 between connection parts 8, 9 when a release valve 10 is closed. |
