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<p>To mitigate pressure pulsation in miniature high-pressure piston pumps, a novel pressure pulsation attenuator–termed the side-branch reflection–absorption compound fluid pulsation attenuator (side-branch RAFPA)–is proposed. The device suppresses pressure pulsation primarily through a mass–spring vibration system. A mathematical model is developed, and the relationship between volume change and pressure pulsation suppression rate is investigated through numerical simulation. The attenuator features a compact design with a total volume of 200&#xa0;cm<sup>3</sup>, making it suitable for integration in space-limited systems. Experimental results demonstrate that, under operating pressures exceeding 30 MPa, the side-branch RAFPA reduces pressure pulsation by approximately 30%, validating its effectiveness. This study offers a novel and effective approach to pulsation suppression in miniature high-pressure systems, filling a gap not addressed in previous research.</p>

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Investigation of a novel pressure pulsation attenuator for miniature high-pressure piston pumps

  • 期刊论文

  • 发表日期：

    2025年10月3日

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  • Sheng Luo,
  • Jianfeng Mao,
  • Yingjie Xu,
  • Baisong Pan

摘要

To mitigate pressure pulsation in miniature high-pressure piston pumps, a novel pressure pulsation attenuator–termed the side-branch reflection–absorption compound fluid pulsation attenuator (side-branch RAFPA)–is proposed. The device suppresses pressure pulsation primarily through a mass–spring vibration system. A mathematical model is developed, and the relationship between volume change and pressure pulsation suppression rate is investigated through numerical simulation. The attenuator features a compact design with a total volume of 200 cm3, making it suitable for integration in space-limited systems. Experimental results demonstrate that, under operating pressures exceeding 30 MPa, the side-branch RAFPA reduces pressure pulsation by approximately 30%, validating its effectiveness. This study offers a novel and effective approach to pulsation suppression in miniature high-pressure systems, filling a gap not addressed in previous research.