Vibration analysis of constant power regulated swash plate axial piston pumps

Theoretical study of flow ripple for an aviation axial-piston pump with damping holes in the valve plate

Seawater axial piston pump is a critical power component in seawater fluid power system. As the properties of high bulk modulus and low viscosity of seawater, the pressure and vibration characteris...

Effect analysis of silencing grooves on pressure and vibration characteristics of seawater axial piston pump

Axial piston pumps are very important to the hydraulic system on aircrafts, and their reliability plays critical role for ensuring the reliability and safety of aircrafts. The thickness prediction ...

https://journals.sagepub.com/doi/pdf/10.1177/1687814016671446

A new dynamic seven-stage model for thickness prediction of the film between valve plate and cylinder block in axial piston pumps

Introducing pre-pressurization/depressurization grooves to diminish flow fluctuations of a rotary energy recovery device: Numerical simulation and validating experiment

In this paper a mathematical model is developed for the kinematics, piston chamber pressure and output flow rate of swash plate axial piston pumps with conical cylinder blocks. Software is developed to study the effect of the port silencing grooves on these variables. The study led to a proposed geometry of the suction and delivery silencing grooves that causes gradual rise and drop of the piston chamber pressure, with cavitation avoided, for a pump with certain dimensions. The recommended groove dimensions render less fluctuation in the output flow rate for a nine-piston pump. The developed model can be used to conduct a similar study for any swash plate axial piston pump.

M.K. Bahr

Papers

Effect of port plate silencing grooves on performance of swash plate axial piston pumps