| 摘要 |
PURPOSE:To take in vibration of a wide frequency range using the device stated in the title and used against engine vibration by causing vibration of a liquid-sealed vibration control device and a vibrating member in a pressure liquid room with the same frequency and the same waveform as vibration of a vibrating portion, the vibration control device damping vibration by means of movement of a liquid between the pressure liquid room and an auxiliary liquid room. CONSTITUTION:A liquid-sealed vibration control device is disposed between a vehicle body 16 and an engine mounting bracket 40. In the liquid-sealed vibration control device, an elastic body 28 is deformed by engine vibration input thereto via the engine mounting bracket 40 and then a pressure liquid room 45 is enlarged or contracted. As a result, a liquid is moved from the pressure liquid room 45 to an auxiliary liquid room 44 through a limiting passage 46. Then a damping force is generated and absorbs the engine vibration. Vibration of the vehicle body 16 is detected and then an electromagnetic actuator 50 is driven to cause vibration of a vibrating plate 24 in the pressurized liquid room 45 with the same waveform and the same frequency as the detected vibration so as to restrain pressure buildup within the pressure liquid room 45 and control a dynamic spring constant. |
