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<p>Nonlinear damping in hydraulic chain tensioners, which functions to regulate tension, absorb impacts, and compensate for wear, directly governs the vibration and noise performance of engine timing systems. A multidisciplinary mathematical model integrating dynamics and fluid mechanics is developed for novel vent disk hydraulic tensioners. The simulation model is proposed and experimentally validated, demonstrating high accuracy with errors below 7% in maximum damping force and 15% in hysteresis loop area. The damping characteristics and underlying mechanisms of the hydraulic tensioner are investigated, particularly on key operational parameters. Results demonstrate that the damping force is positively correlated with excitation frequency, excitation amplitude, oil pressure, and oil viscosity. This research provides a practical subsystem model for timing chain simulations to streamline and enhance the design verification process.</p>

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Nonlinear damping in hydraulic tensioners: mechanism, model, and validation

  • 期刊论文

  • 发表日期：

    2026年5月13日

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  • Zhongye Zhang,
  • Shengwen Shi,
  • Zhancheng Dou,
  • Zengming Feng,
  • Yujie Jiang,
  • Xingyu Li,
  • Xianyu Wang

摘要

Nonlinear damping in hydraulic chain tensioners, which functions to regulate tension, absorb impacts, and compensate for wear, directly governs the vibration and noise performance of engine timing systems. A multidisciplinary mathematical model integrating dynamics and fluid mechanics is developed for novel vent disk hydraulic tensioners. The simulation model is proposed and experimentally validated, demonstrating high accuracy with errors below 7% in maximum damping force and 15% in hysteresis loop area. The damping characteristics and underlying mechanisms of the hydraulic tensioner are investigated, particularly on key operational parameters. Results demonstrate that the damping force is positively correlated with excitation frequency, excitation amplitude, oil pressure, and oil viscosity. This research provides a practical subsystem model for timing chain simulations to streamline and enhance the design verification process.