| 摘要 |
PROBLEM TO BE SOLVED: To absorb vibration over a wide frequency. SOLUTION: A main liquid chamber 232, a first sub-liquid chamber 234 and a second sub-liquid chamber 370 are arranged inside an outer cylinder 316, the main liquid chamber 232 and the first sub-liquid chamber 234 are connected by a shake orifice 252, and the main liquid chamber 232 and the second sub- liquid chamber 370 are connected by an idle orifice 246. An air chamber 374 corresponding to a diaphragm 368 of the second sub-liquid chamber 370 is connected to an intake manifold via solenoid valve. At shake vibration time, air of the air chamber 374 is sucked by negative pressure of the intake manifold, and the diaphragm 368 is brought into close contact with a block 364 so as not to expand/contact the second sub-liquid chamber 370. Liquid absorbs shake vibration by comining and going only in the shake orifice 252. At idle vibration time, the solenoid valve is closed, the diaphragm 368 is swollen to expand/ contract the second sub-liquid chamber 370 to absorb idle vibration by making the liquid come and go by the idle orifice 246. |
