| 摘要 |
PURPOSE:To reduce choked sounds in a car and combustion noises by adequately setting the effective area of a diaphragm so as to satisfy a specific equation related to the effective area of a mounting device, the spring constant of a supporting elastic body, etc. CONSTITUTION:A hollow supporting elastic body 3 is stuck between a power unit side supporting member 1 fitted to a power unit and a car body side supporting member 2 fitted to a car body, and a space enveloped with them is sealed with an operating liquid 4. A rubber diaphragm 5 is provided on the power unit side supporting member 1, and an added metal mass 6 is fixed to this diaphragm 5. Values of individual sections of this mounting device are set to satisfy an equation K3+S3(S3-S1).KV 0, where S3 is the effective area of the mounting device, S1 is the effective area of the diaphragm 5, K3 is the spring constant of the supporting elastic body 3, and KV=DELTAP/DELTAV, where DELTAP is a change of the mount liquid pressure and DELTAV is a change of the liquid chamber volume due to the extension of the supporting elastic body 3. |
