| 摘要 |
PURPOSE:To improve the comfortability and silentness of car by reducing the dynamic spring constant under quite low speed travel such as retardation or idling thereby preventing transmission of low amplitude vibration to the chassis. CONSTITUTION:A vibration-isolating rubber system is provided with chamber spaces 21, 23 containing viscous liquid where a solenoid system 29 and a valve element 25 movable through a compression spring 33 are arranged in said spaces 21, 23. Under non-sucking state of solenoid system 29, said spaces 21, 23 are communicated while under sucked state, they 21, 23 are partitioned by means of the valve element 25 and communicated through a restriction path made in the valve element 25. Power supply to the solenoid system 29 is stopped only when the car speed to be detected through a car speed sensor is lower than specific level, for example 15km/h, and the rotation of internal-combustion engaine to be detected through rotation sensor is lower than specific level, for example 1,500rpm. |
