| 摘要 |
A fluidborne noise attenuator (14) comprises a dampening medium (27) which exhibits a bulk modulus (e.g., 50,000 psi to 180,000 psi) substantially greater than that of an inert gas, such as nitrogen and substantially less than that of a hydraulic working fluid (e.g., 225,000 psi). The attenuator (14) is capable of attenuating noise levels of hydraulic fluid over wide frequency and mean system pressure ranges in contrast to conventional attenuators which are "tuned" for the attenuation of noise levels at a specific frequency and mean system pressure. |
