| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid-filled engine mount for an automobile having a novel structure, improving vibration isolation performance by avoiding significantly high dynamic spring motion caused by the antiresonance action of an orifice passage when large amplitude vibration is inputted on a high-frequency side rather than a tuning frequency of the orifice passage while sufficiently securing the vibration isolation performance by fluid flowing action through the orifice passage and fluid pressure absorption performance by a movable plate. SOLUTION: A pressure release hole 94 is formed at the wall 38 of a movable plate arrangement area 62 on the side of an equilibration chamber 90, and a valve element 96 is provided in such a manner as to abut on an opening of the pressure release hole 94 on the side of the equilibration chamber 90 and to be displaced in a separating direction. Furthermore, a urging means 96 is provided for urging the valve element 96 to elastically close the pressure release hole 94 by the valve element 96. COPYRIGHT: (C)2010,JPO&INPIT |
