| 摘要 |
PURPOSE:To change the damping ratio in all frequency areas of an engine by using the orifice changeable range and a needle changeable range properly with the operation of a single actuator. CONSTITUTION:An engine mount 4 arranged between a car body 1 and an engine 10 has a rubber elastic body 35 to be deformed elastically by the input oscillation, and a main liquid chamber 64, which is filled with liquid and of which volume is changed in response to the deformation of the rubber elastic body 35, and an auxiliary liquid chamber 65, which is filled with liquid and of which volume can be changed in response to a change of the volume of the main liquid chamber 64. The main liquid chamber 64 and the auxiliary liquid chamber 65 can be communicated or cut by a passage 67 and an orifice passage. Opening area of the orifice passage can be changed by a rotating member to be driven by a shaft 55, and the volume of the main liquid chamber 64 can be changed by a piston 75. The piston 75 is reciprocated by a cam 70 fixed to the tip of the shaft 55. The shaft 55 is rotated by a motor 59. |
