| 摘要 |
PURPOSE:To improve the durability and the reliability by providing a cooling means on a part on which an electromagnetic vibration means is provided, which generates vibration force of the reverse phase synchronizing the vibration cycle generated by a power unit. CONSTITUTION:Non-compression fluid is sealed in a liquid chamber 10 formed in first and second casings 1, 2, and a vibration force control signal from a vibration force control circuit is applied to an electromagnetic coil 7 so that the change in the pressure is minimized, and the attraction force or the repulsion to an vibration plate 5 of a magnet 8 is variably controlled. A cooling water circulating jacket 40 is provided on the upper part of an engine side mounting bracket 6 and the surroundings, and a radiator 46 is communicated with cooling water pipes 43, 44, to circulate cooling water 40a by a water pump 45. The heat generated by the electromagnetic coil 7 is exchanged with cooling water 40a, to restrict the temperature rise in an actuator part, and the durability, the control responsibility, and the reliability can thus be improved. |
