scholarly journals The influence of the swash plate oscillation on pressure ripple in variable displacement axial piston pump

2020 ◽  
Author(s):  
Xiaochen Huang ◽  
◽  
Bing Xu ◽  
Junhui Zhang ◽  
◽  
...  
Keyword(s):  
Piston Pump ◽  
Axial Piston Pump ◽  
Swash Plate ◽  
Variable Displacement ◽  
Pressure Ripple ◽  
Axial Piston

The influence of dynamic swash plate vibration on outlet flow ripple in constant power variable-displacement piston pump

2019 ◽  
Vol 233 (14) ◽  
pp. 4914-4933 ◽  
Author(s):  
Yang Pan ◽  
Yibo Li ◽  
Dedong Liang
Keyword(s):  
Theoretical Model ◽  
Piston Pump ◽  
Plate Vibration ◽  
Axial Piston Pump ◽  
Constant Power ◽  
Flow Ripple ◽  
Swash Plate ◽  
Variable Displacement ◽  
Outlet Flow ◽  
Axial Piston

The vibration of a swash plate is caused by the piston forces and the control actuator acting on the swash plate. An earlier study of the outlet flow ripple of variable-displacement axial piston pumps assumed a fixed swash plate angle; it ignored the influence of swash plate vibration on the outlet flow ripple of the axial piston pump. In this work, a theoretical model of the outlet flow ripple and pressure pulsation was established in a constant power variable-displacement piston pump. The vibration of swash plate, flow leakage, and valve dynamic characteristics are considered in the theoretical model. The computational results of the theoretical model at different external load pressures are verified by comparison with experimental results. The vibration of the swash plate is strongly influenced by both the piston chamber pressure variation and the control actuator mechanism. The study proved the influence of the swash plate vibration on the outlet flow ripple and the pressure pulsation of an axial piston pump. Compared to the case of a fixed swash plate angle, accounting for swash plate vibration is much more suitable for the accurate determination of the outlet flow ripple and pressure pulsation of an axial piston pump. It is also shown that the vibration of the swash plate affects the valve plate design. Accordingly, valve plate optimization based on the theoretical model of the outlet flow ripple was also studied in this work. The amplitude of the instantaneous outlet flow ripple was considered as the optimization objective function. Finally, the optimized design parameters for a constant power variable-displacement swash plate axial piston pump were evaluated.

scholarly journals Pressure compensator design, simulation and performance evaluation of a variable displacement swash plate type axial piston pump

2021 ◽  
pp. 123-130
Author(s):  
Nitesh MONDAL
Keyword(s):  
Design Procedure ◽  
Maximum Flow ◽  
Piston Pump ◽  
Experimental Result ◽  
Axial Piston Pump ◽  
Output Pressure ◽  
Swash Plate ◽  
Variable Displacement ◽  
Axial Piston ◽  
Plate Type

This work presents a simple design procedure of a pressure compensator of a swash plate type variable displacement axial piston pump (VDAPP). The route of the work mainly focuses on static design through balancing the torque given by the pump pistons, rate cylinder and strok- ing cylinder on the swash plate during cut-in (maximum flow) and cut-off (minimum flow) pressure condition of the system with an objective of minimizing the output pressure ripples. The outcome in terms of pressure from the dynamic simulation of the designed compensator with pump has been compare with experimental result obtained from a reference commercial pump has compensator with duel spool. The model has been used for performance prediction for wide variations of the load valve area settings.

scholarly journals Load of the slipper-swash plate kinematic pair of an axial piston pump

2018 ◽  
Vol 157 ◽  
pp. 08013 ◽  
Author(s):  
Tadeusz Złoto ◽  
Konrad Kowalski
Keyword(s):  
Piston Pump ◽  
Geometrical Parameters ◽  
Kinematic Pair ◽  
Axial Piston Pump ◽  
Swash Plate ◽  
Axial Piston

The paper presents problems related to the twisting moment of the slipper. The load of the slipper and the piston has been presented and the complex formula of twisting moment of the slipper has been established. Achieved results has been presented graphically. The conducted research has indicated that the value of the twisting moment relays on both the exploitation and geometrical parameters.

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