Lubrication analysis between piston and cylinder in hydraulic piston pump - effect of piston shape and circumferential groove
In this paper, a theoretical analysis is carried out to study the effect of piston shape and circumferential groove on the lubrication characteristics between partially tapered piston and cylinder bore of hydraulic piston pumps. Analytic expressions for the pressure distribution, lateral force acting on the piston and leakage flow rate through the clearance are obtained solving onedimensional Reynolds equation. The results showed that the tapered- length and groove location affect highly the pressure distributions, lateral forces and leakage. Partially tapered piston whose groove is located in tapered region is most effective because it reduces the possibility of hydraulic locking.
Piston pump Piston shape Groove Reynolds equation Lubrication analysis Lateral force Leakage flow rate
Tae Jo Park
School of Mechanical & Aerospace Engineering, ERI / Gyeongsang National University, Jinju / Korea
国际会议
杭州
英文
745-749
2009-04-08（万方平台首次上网日期，不代表论文的发表时间）