A Study on Lubrication Characteristics between Piston Ring and Cylinder Bore of Bent-Axis Type Piston Pump

Jung, Jae-Youn; Cho, Ihn-Sung; Beak, Il-Hyun; Shin, Hyun-Il; Jo, Jae-Cheon; Lü, Hong

doi:10.1007/978-3-642-03653-8_45

Cited by 2 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analysis model and boundary condition of the relative motion part are expressed in Fig. 3 [4], which shows the model between the piston ring and cylinder bore. In this figure, the piston and piston ring are moved by the sliding velocity u 1 on the fixed cylinder bore (u 2 =0).…”

Section: Theoretical Analysismentioning

confidence: 99%

Lubrication characteristics of dual piston ring in bent-axis type piston pumps

Cho¹,

Beak²,

et al. 2010

J Mech Sci Technol

View full text Add to dashboard Cite

The bent-axis type of piston pump driven by the piston rod works by the piston rod driving the cylinder block; because of this the taper angle of the piston rod and the swivel angle between the cylinder block and the shaft are important design factors. If these factors cannot satisfy the conditions for optimum design, the friction loss between the cylinder bore and the piston increases, and the pump can fail to work under conditions of severe friction and wear. Since the piston reciprocates in the cylinder bore with high velocity, at the same time rotating on its own axis and revolving on the center of the cylinder block, a decrease of the volume efficiency is generated because of the leakage between the cylinder bore and the piston. Therefore, to prevent this, the piston ring is designed to be at the end of the piston, and the friction characteristics between the piston ring and the cylinder bore require further research due to their great influence on the performance of the piston pump. Thus, in this paper, the elastohydrodynamic lubrication (EHL) analysis of the film thickness, the pressure distribution, and the friction force, have been studied between the piston ring and the cylinder bore in the bent-axis type of piston pump. The analyzed results show that the friction force is influenced by the rotating speed and the discharge pressure.

show abstract

Section: Theoretical Analysismentioning

confidence: 99%

Lubrication characteristics of dual piston ring in bent-axis type piston pumps

Cho¹,

Beak²,

et al. 2010

J Mech Sci Technol

View full text Add to dashboard Cite

show abstract

“…from Chonbuk National University in South Korea conducted profound theoretical analyses of the principle of rotation in conical piston-driven cylinders, followed by experimental validation. Addressing the angular discrepancy in inclined-axis axial piston pumps, he proposed a design scheme involving transmission shaft inconsistencies [9,10]. Professor Jung, J.Y.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Complex Piston Movement on the Output Flow Rate of a Hingeless Bent-Axis Axial Piston Pump

Shi,

Gao

et al. 2024

Processes

View full text Add to dashboard Cite

Wobble-plate axial piston pumps, characterized by the lack of a slipper mechanism, experience reduced leakage in comparison to their swash-plate counterparts, which contributes to their higher volumetric efficiency. Presently, the primary focus of the research conducted by scholars both domestically and internationally is concentrated on wobble-plate axial piston pumps. The performance studies within this field are predominantly focused on investigating flow pulsation. They also investigate pressure pulsation. Additionally, they investigate cavitation phenomena. Research on inclined-axis axial piston pumps has been limited. This study focused on analyzing the operational form of the piston within an inclined-axis axial piston pump. A correction factor k was introduced based on the motion characteristics of the piston. The application of this factor significantly improved the accuracy of the simulations when compared to the experimental results. Specifically, at a load pressure of 10 MPa, the discrepancy between the simulation and the experimental data was reduced from 8.95% to 0.23%. Similarly, at a load pressure of 20 MPa, the error rate was minimized. It was reduced from 9.15% to 0.35%. This demonstrates the effectiveness of the proposed correction factor. The correction factor enhances the predictive accuracy of the pump’s performance. This enhancement is observed under varying load conditions.

show abstract

A Study on Lubrication Characteristics between Piston Ring and Cylinder Bore of Bent-Axis Type Piston Pump

Cited by 2 publications

References 3 publications

Lubrication characteristics of dual piston ring in bent-axis type piston pumps

Lubrication characteristics of dual piston ring in bent-axis type piston pumps

The Influence of Complex Piston Movement on the Output Flow Rate of a Hingeless Bent-Axis Axial Piston Pump

Contact Info

Product

Resources

About