한국윤활학회:학술대회논문집 (Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference)
- 한국윤활학회 2004년도 학술대회지
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- Pages.99-107
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- 2004
유압펌프용 실린더 블록의 윤활 및 동특성 해석
Analysis of Lubrication and Dynamic Characteristics of a Cylinder Block for Hydraulic Pump
- Ahn Sung-yong (Mech. Eng. Dept., Graduate School, Yonsei Univ.) ;
- Rhim Yoon-chul (School of Mech. Eng., Yonsei Univ.) ;
- Hong Yeh-sun (School of Aerospace & Mech. Eng., Hankuk Aviation Univ.)
- 발행 : 2004.11.01
초록
Lubrication characteristics between a cylinder block and a valve plate for high speed bent-axis type hydraulic pump play an important role in volumetric efficiency and durability of pump. In this paper, a finite element method is presented for the computation of the pressure distribution between a cylinder block and a valve plate for high speed bent-axis type hydraulic pump. Also, a Runge-Kutta method is applied to simulate the cylinder block dynamics of three-degrees of freedom motion. From the results of computation, we can draw two major conclusions. One is related to the fluid film characteristics between a cylinder block and a valve plate and the other is related to the average leakage that is determined by the pressure gradient and the clearance near the discharge port. The numerical results of cylinder block dynamics were compared with the experimental results using eddy-current type gap sensors those are fixed at a pump housing.
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