Coupled evolution of piston asperity and cylinder bore contour of piston/cylinder pair in axial piston pump

Lyu, Fei; Zhang, Junhui; Zhao, Shoujun; Li, Kun; Xu, Bing; Huang, Weidi; Xu, Haogong; Huang, Xiaochen

doi:10.1016/j.cja.2022.09.001

Cited by 16 publications

(2 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The hydraulic pressure transducer (HPT) registers any change in pressure in the pressure line that causes the displacement of the piston by the size x and is constantly in balance with the spring. The disturbance force ∆F acts on the piston HPT and is equal to the difference of the force that occurs due to the action of the pressure p n on the surface of the piston A v and the force of the spring, which is equal to the product of the stiffness C 1 and the preload of the spring ε I [6][7][8][9][10][11].…”

Section: Mathematical Modelmentioning

confidence: 99%

Experimental Tests of the Piston Axial Pump with Constant Pressure and Variable Flow

Petrović,

Banaszek,

Andjelković

et al. 2023

Designs

View full text Add to dashboard Cite

Constant pressure variable flow reciprocating axial pumps (CPAP) are used in various applications, where a constant output pressure is maintained when the flow rate changes. When the hydraulic system is at rated pressure or less, the swash plate has maximum tilt, and the pump delivers maximum flow. The swash plate comes into this position thanks to the action of a reactive piston in which there are two springs. However, when the pressure rises above the nominal pressure value, the piston of the hydraulic pressure transducer (HPT) distributes the fluid under pressure to the hydraulic cylinder (HC), which causes a decrease in the tilt angle of the swash plate and a decrease in flow. The CPAP was selected as a component of the hydraulic system of the aircraft for the experimental tests in this paper. The experimental tests covered the structural and working parameters of the pump and analyzed their performance, efficiency and reliability. Experimental tests of structural and operating parameters of the CPAP were carried out in the Laboratory for Hydraulics and Pneumatics “PPT-Namenska” Trstenik on the hydraulic system, which simulated the real conditions prevailing in the hydraulic system of the aircraft. A system was used for data acquisition and recording of pump characteristics, which were obtained during experimental testing. The results of the measurement and testing of the structural parameters of the CPAP are shown in tabular form, and the experimental tests of static characteristics and dynamic behavior are shown diagrammatically.

show abstract

Section: Mathematical Modelmentioning

confidence: 99%

Experimental Tests of the Piston Axial Pump with Constant Pressure and Variable Flow

Petrović,

Banaszek,

Andjelković

et al. 2023

Designs

View full text Add to dashboard Cite

show abstract

“…A lot of attention is paid to the modeling of tribological processes in this precision pair. In [1], a simulation model based on the finite element method was proposed, taking into account the interaction between the elastic-plastic deformation of the irregularities on the piston surface and the surface lubrication state. Seal rings of reciprocating pistons determine sealing failure and affect the performance and safety of aircraft flights [2].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of fluoroplastic seals of axial-piston pumps in relation to the operating conditions of a hydraulic drives

Alisin

2023

E3S Web Conf.

View full text Add to dashboard Cite

The article considers the issues associated with the elastic and plastic properties of fluoroplastic in the state of delivery and radiation hardened. The statement about the radiation hardening of fluoroplastic improves thermal deformation characteristics is substantiated. The results of kinetic microindentation are studied in comparison with the initial state in the temperature range of 80 - 400 0C. The effect of temperature on the ratio of the work of the elasticity and plasticity forces is analyzed. Particular attention is paid to the elastic properties of fluoroplastic. The assumption is substantiated that it is possible to improve the elastic properties of fluoroplastic by radiation treatment at elevated temperatures, which are typical for high-speed axial piston pumps. On the basis of the study, it was found that the use of radiation hardening treatment of fluoroplastic is promising for increasing the durability of movable seal rings.

show abstract

Equal heat flux loading optimization approach for uniform wear of the wet brake

Han,

Zhang,

Dong

et al. 2024

Case Studies in Thermal Engineering

View full text Add to dashboard Cite

Coupled evolution of piston asperity and cylinder bore contour of piston/cylinder pair in axial piston pump

Cited by 16 publications

References 35 publications

Experimental Tests of the Piston Axial Pump with Constant Pressure and Variable Flow

Experimental Tests of the Piston Axial Pump with Constant Pressure and Variable Flow

Mechanical properties of fluoroplastic seals of axial-piston pumps in relation to the operating conditions of a hydraulic drives

Equal heat flux loading optimization approach for uniform wear of the wet brake

Contact Info

Product

Resources

About