| 摘要 |
PURPOSE:To reduce vibrations in a car body so effectively, by forming a partial wall of each fluid chamber with an elastic film, while checking its deformation selectively with an elastic film deformation restricting device for fluid pressure operation. CONSTITUTION:At a high frequency range of roll vibration in anengine 2, selector valves 26 and 31 are selected by a signal out of a controller 32, opening an on-off valve 14 with each actuator operating by fluid pressure, and pressure oil inside each suction pressure chamber 21b of actuators 21 is discharged out whereby each elastic film 7 comes to be freely deformable, absorbing a volumetric variation in these fluid chambers 8, and fluid movement by each conduit 10 is not carried out, thus a roll spring constant comes low. On the other hand, at a low frequency range, hydraulic pressure is fed to each hydraulic chamber 21b by selective control of the selector valve 26, and these elastic films 7 are forcibly pressed each stopper plate 15, checking its deformation, thus vibrations in a car body are reduced with the fluid movement by the conduit 10. In addition, when large torque is added, the on-off valve 14 is closed. Thus, the body vibration is effectively reducible. |
