Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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Pressure Variation Characteristics at Trapping Region in Oil Hydraulic Piston Pumps

유압 피스톤 펌프의 폐입 구간에서의 압력 변동 특성

  • Kwag Jae-ryon (Graduate School, Chonbuk Nat'1 Univ.) ;
  • Oh Seok-Hyung (Dept. of Mechanical Eng., & Kunsan Nat'1 Univ.) ;
  • Jung Jae-Youn (Dept. of Mechanical Eng. & Industrial Technology Research Institute, Chonbuk Nat'1 Univ.)
  • 곽재련 (전북대학교 대학원) ;
  • 오석형 (군산대학교 기계공학부) ;
  • 정재연 (전북대학교 기계항공시스템공학부, 부설 공학연구원 공업기술연구센터)
  • Published : 2003.11.01
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Abstract

Design of pre-compression region(trapping region) of the valve plate is an important element to minimize the pressure fluctuation in a cylinder and in discharge process, and pump noise. In this study, we tried to prove what the characteristics of the oil hydraulic pump would be according to the angle of the trapping region. Three kinds of asymmetrical valve plates were used. As a result, we found that by designing the trapping region, the slope of the pressure rise in the cylinder port from low-pressure suction region to high-pressure discharge region is relaxed and the pressure fluctuation width and the discharge pressure pulsation are reduced. Therefore, because the pump gets smooth pressure fluctuation and low fluid Impact, the pump noise is reduce.

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