DOI QR코드

DOI QR Code

The Lubrication Characteristics According to the Rotating Radius of Piston in a Swash-Plate Type Piston Pump

사판식 피스톤 펌프의 피스톤 회전 반경에 따른 윤활 특성

  • Cho, Ihn Sung (Division of Mechanical System Engineering, Chonbuk National Univ.) ;
  • Jung, Jae Youn (Division of Mechanical System Engineering, Chonbuk National Univ.)
  • 조인성 (전북대학교 기계시스템공학부) ;
  • 정재연 (전북대학교 기계시스템공학부)
  • Received : 2013.03.12
  • Accepted : 2013.05.15
  • Published : 2013.07.01

Abstract

Hydraulic systems are used to transform mechanical energy and fluid energy into each other. Its applications are very wide over the whole industries such as automobiles, public works, rockets, machine tools, construction heavy equipments, airplaces and so on. They are hydraulic pumps that transform energy in the systems. In this study, with basic operation principles as a start point, I tried to understand how the rotating radius of a piston affects the lubrication characteristics in more practical conditions, a swash-plate with tilt angle zero capable of rotating motion and other devices was used. In this paper, a slipper was located on 45mm eccentricity from the center of a swash-plate. As a result, through this experiment, it was found that the rotating radius of a piston affects load capacity, leakage flow and lubrication characteristics and it is one of the important parts for improving the pump efficiency.

Keywords

References

  1. Sharma, S. C., Jain, S. C., and Bharuka, D. K., "Influence of recess shape on the performance of a capillary compensated circular thrust pad hydrostatic bearing," Tribology International, Vol. 35, No 6, pp. 347-356, 2002. https://doi.org/10.1016/S0301-679X(02)00013-0
  2. Harris, R. M., Edge, K. A., and Tilley, D. D., "Predicting the behavior of slipper pads in swash plate-type axial piston pumps," Journal of Dynamic Systems Measurement and Control, Vol. 118, No. 1, pp. 41-47, 1996. https://doi.org/10.1115/1.2801149
  3. Koc, E., Hooke, C. J., and Li, K. Y., "Slipper balance in axial piston pumps and motors," Transaction of the ASME, Vol. 114, No. 4,pp. 766-772, 1992.
  4. Koc, E. and Hooke, C. J., "Considerations in the design of partially hydrostatic slipper bearings," Tribology International, Vol. 30, No. 11, pp. 815-823, 1977.
  5. Jung, J. Y. et al., "A study on lubrication characteristic of slipper hydrostatic bearing in hydraulic piston pump," Trans. of the KFPS, Vol. 4, No. 3, pp. 1-6, 2007.
  6. Cho, I. S., "Theoretical Analysis of the Slipper Hydrostatic Bearing Shape in the Swash Plate Type Axial Piston Pump," Journal of the KSFC, Vol. 10, No. 1, pp. 14-20, 2013. https://doi.org/10.7839/ksfc.2013.10.1.014
  7. Kim, K. H., Choi, M. J., Lee, K. W., and Jang, J. S., "A Study on the Reduction in Pressure Ripples for a Bent-Axis Piston Pump by a Phase Interference," J. Korean Soc. Precis. Eng., Vol. 21, No. 9, pp. 103-110, 2004.
  8. Park, T. J. and Yoo, J. C., "Flow Analysis in a Slipper Bearing for Swash Plate Type Axial Piston Pump," Journal of the KSTLE, Vol. 24, No. 6, pp. 343-348, 2008.

Cited by

  1. Implementation of a Small Size Electric Automatic Lubrication System for Heavy Commercial Vehicle vol.30, pp.10, 2013, https://doi.org/10.7736/KSPE.2013.30.10.1041