双节流盘结构对液压发动机悬置动刚度和滞后角的影响

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中图分类号：TB535 文献标志码：A

文章编号：1672-7010（2026）01-0080-11

Abstract： To address the high-frequency stifening issue in hydraulic mounts，a dual-throtle-plate hydraulic mount is proposed.First，abond graph method is employed to derive a mathematical model describing the influence of the dual-throttle-plate structure on the mount’s dynamic stifess and hysteresis angle.

Second，the accuracyof the mathematical model is verified against experimentaldata.Finally，the effcts of key parameters—including the fluid chamber compliance （ ⋅C12 ），equivalent cross-sectional area（ （Am2） ），equivalent surrounding hole area ），fluid inertiacoefficient（ ⋅I12 ），and fluid damping coefficient （ Rt2 ）of the second throttle plate—on the dynamic stifness and hysteresis angleare analyzed.The results indicate that：1）The influence of the throttle-plate structure on low-frequency dynamic characteristics is less than 5% ；2）In the high-frequency range，the throtle-plate structure efectively suppresses inertial liquid column resonance by enhancing fluid turbulence and secondary damping.

Key words： hydraulic engine mount； throttle-plate structure;； dynamic stiffess； hysteresis angle

汽车的噪声、振动与声粗糙度（noise，vibration，andharshness，NVH）性能受到广泛关注，而发动机作为汽车的主要振动源，其隔振性能对整车的NVH水平影响显著。（剩余8840字）