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프리필용 체크밸브의 유압진동 특성에 관한 연구

A Study on the Hydraulic Vibration Characteristics of the Prefill Check Valve

  • Park, Jeong Woo (Department of Thermal Systems, Energy Systems Research Division, Korea Institute of Machinery & Materials) ;
  • Han, Sung-Min (Technology Institute, Cewon E&C) ;
  • Lee, Hu Seung (Department of Convergence System Engineering, Chung Nam National University) ;
  • Yun, So-Nam (Department of Thermal Systems, Energy Systems Research Division, Korea Institute of Machinery & Materials)
  • 투고 : 2021.05.03
  • 심사 : 2021.06.28
  • 발행 : 2021.09.01

초록

A rear axle steering (RAS) system is attached to the rear of medium and large commercial vehicles that transport large cargo. The existing RAS systems are driven by electro-hydraulic actuator (EHA), and most commercialized EHAs consist of electric motors, hydraulic pumps, relief valves, prefill valves and cylinders. The prefill valve required for such EHAs is a type of check valve with extremely low cracking pressure that should not allow RAS to have noise or vibration, and the prefill valve prevents system negative pressure as well as unstable operation. Most papers on this topic rely on experiments to predict valve performance, and theoretically detailed modeling of valves or pipelines is performed, but it is very rare to evaluate hydraulic vibration characteristics by analysing everything from hydraulic pumps to valves comprehensively. In this study, we proposed an experimental circuit that can predict the performance of the prefill valve. The study also analysed the pressure-flow pulsation that is transmitted to the valve through the pipeline, and how the transmitted pressure-flow pulsation affects the valve vibration.

키워드

과제정보

이 논문은 2021년도 정부(산업통상자원부)의 재원으로 한국산업기술진흥원의 지원을 받아 수행된 연구임 (P0013851, 2020년 상용차 산업 혁신 성장 및 미래형 산업생태계 구축사업).

참고문헌

  1. H. A. Khan et al., "A Review of Rear Axle Steering System Technology for Commercial Vehicles," Journal of Drive and Control, Vol.17, No. 4, pp. 146-153, 2020.
  2. S. H. Park, "Characteristics of an Electro Hydrostatic Actuator and an Application Fields," Journal of Drive and Control, Vol.6, No. 1, pp. 2-10, 2009.
  3. J. E. Funk, "Poppet Valve Stability," Journal of basic Engineering ASME, pp.207-212, 1964.
  4. M. A. Porter et al., "Valve-Induced Piping Vibration," ASME, PVP2011-57391, 2011.
  5. B. H. Choi, S. I. Park and C. B. Cheon, "A Case Study of Root Cause Analyses and Remedies for High Frequency Vibration of Globe Vavle in Nuclear Power Plant Piping System," The Korean Society for Noise and Vibration Engineering, pp.394-399, 2005.