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    • 3. 发明授权
    • Hydraulic mount with low amplitude, low-to-medium frequency vibration
isolation
    • 液压安装,低振幅,低至中频振动隔离
    • US5273262A
    • 1993-12-28
    • US898644
    • 1992-06-15
    • Todd H. BaldiniJohn F. HoyingMichael J. Vendely
    • Todd H. BaldiniJohn F. HoyingMichael J. Vendely
    • F16F13/10F16M5/00
    • F16F13/105
    • A hydraulic mount assembly includes a pair of mounting members connected together through a hollow elastomeric body. This hollow body is closed by a resilient diaphragm so as to form a cavity for a damping liquid. A partition divides the cavity into a primary chamber formed between the partition and the hollow body and a secondary chamber formed between the partition and the diaphragm. The partition also includes a primary (damping) track and a secondary (dynamic rate reducing) track providing fluid communication between the chambers. A decoupler is held for limited reciprocating movement in an annular groove in the secondary track. In operation, high amplitude vibratory inputs seat the decoupler forcing damping fluid to flow between the primary and secondary chambers through the damping track. The resulting high level of damping and high dynamic rate serve to suppress the vibrations and control engine movement/noise. In response to low amplitude and particularly low-to-medium frequency vibratory inputs, the decoupler remains unseated, allowing damping fluid to flow around the decoupler and through the secondary track. The resulting fluid inertial forces create a low dynamic rate and a soft mount for better vibration and noise isolation. At high frequency and low amplitude, such as during normal idle, the decoupler reciprocates normally, thus avoiding damping action.
    • 液压安装组件包括通过中空弹性体连接在一起的一对安装构件。 该中空体由弹性膜片封闭,以形成用于阻尼液体的空腔。 隔板将空腔分成形成在隔板和中空本体之间的主室,以及形成在隔板和隔膜之间的次室。 分隔件还包括主(阻尼)轨道和次级(动态减速)轨道,其提供腔室之间的流体连通。 为了在次级轨道中的环形槽中的有限的往复运动保持解耦器。 在操作中,高振幅的振动输入端使解耦器阻止阻尼流体通过阻尼轨道在主室和次室之间流动。 所产生的高阻尼和高动态速率用于抑制振动和控制发动机运动/噪音。 响应于低振幅和特别是低至中频振动输入,解耦器保持不变,允许阻尼流体绕解耦器流过并通过次级轨道。 所产生的流体惯性力产生低动态速率和软安装,以实现更好的振动和噪声隔离。 在高频和低振幅下,例如在正常空闲期间,解耦器正常往复运动,从而避免阻尼作用。