| 摘要 |
PURPOSE: To damp vibration excited on the road surface and isolate vibration excited by an engine by compensating a volume increase of a liquid in a working chamber due to heating of an engine through compensating holes. CONSTITUTION: This engine mount includes two working chambers 1 and further a compensating chamber 3 which receives an additional liquid volume with non-pressure and is connected to the working chambers through compensating holes 5. In the case of using the engine mount in a sound-tight capsuled automobile engine room, the temperature necessarily becomes about 140 deg.C due to heating. Accordingly, though the liquid volume in the working chambers 1 is increased, such volume increase can be compensated through the compensating holes 5. Thus, the internal pressure as the design base is kept and there is no problem in respect of vibro-isolation and in respect of damping effect. As the fluid resistance of the compensating holes 5 is very large, even if the vibration is transmitted to the working chambers 1 to cause a change in pressure, the liquid component is kept from being relatively displaced in the compensating holes to damage a function by the vibration. |
