scholarly journals The Impact of Slipper Microstructure on Slipper-Swashplate Lubrication Interface in Axial Piston Pump

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 222865-222875
Author(s):  
Jihai Jiang ◽  
Zebo Wang ◽  
Geqiang Li
Keyword(s):  
Piston Pump ◽  
Axial Piston Pump ◽  
The Impact ◽  
Axial Piston

Evaluation and optimization of axial piston pump textured slipper bearings with spherical dimples based on hybrid genetic algorithm

2020 ◽  
pp. 135065012097249
Author(s):  
Hesheng Tang ◽  
Yan Ren ◽  
Jiawei Xiang ◽  
Kumar Anil
Keyword(s):  
Genetic Algorithm ◽  
Friction Coefficient ◽  
Hybrid Genetic Algorithm ◽  
Piston Pump ◽  
Axial Piston Pump ◽  
Genetic Method ◽  
Lubrication Performance ◽  
Load Carrying ◽  
The Impact ◽  
Axial Piston

The spherical dimple texture have been designed on the rough surface of slipper bearing for improving the lubrication performance in axial piston pump. In this work, we have investigated and optimized the structure parameters of textures to obtain minimum friction coefficient as well as maximum loading capacity. Optimization of the geometry parameters of dimple texture by the integration of a hybrid evolutionary optimization method based on the sequential quadratic programming and genetic algorithm. Parametric analysis is applied for the evaluation of the impact level of geometry parameters on lubrication performance. The results shows that hybrid genetic method can be used for the optimization of slipper bearing with spherical dimple textures to generate lower friction coefficient and greater capacity of load carrying. The carrying capacity and friction coefficient of slipper bearing demonstrate a 64.8% and 4.5% improvements after multi-objective optimization. When the texture radius and depth are set to 18 µm and 0.8 µm, there exists the greatest load carrying force and lowest friction coefficient. This work presents a key designing guide for axial piston pump textured slipper bearings.

The Impact of Using a Secondary Swash-Plate Angle Within an Axial Piston Pump

2004 ◽  
Vol 126 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Noah D. Manring ◽  
Zhilin Dong
Keyword(s):  
Equations Of Motion ◽  
Piston Pump ◽  
Plate Motion ◽  
Axial Piston Pump ◽  
Proper Position ◽  
Control Effort ◽  
Pump Speed ◽  
Swash Plate ◽  
The Impact ◽  
Axial Piston

In this paper, the control and containment forces acting on the swash plate of an axial-piston pump are examined. The most novel aspect of this research is that it includes the analysis of a secondary swash-plate angle that is occasionally used in aerospace pump applications. From a practical standpoint, swash-plate control and containment devices take on many different designs; however, they must all resist the same essential moments and forces that attempt to dislocate the swash plate from its proper position. By considering the basic machine design without its control and containment mechanisms, this work generally derives the needed forces and moments for insuring proper swash plate motion and thereby gives the designer of these machines a useful tool for designing control and containment devices of any type. In this research, the dynamic characteristics of the control and containment forces are studied by deriving instantaneous and average equations of motion for the swash plate. Results from this analysis are generated by holding the pump speed and discharge pressure constant, and by prescribing a typical second-order response for the primary swash plate angle. In conclusion, it is shown that the primary advantage of implementing a secondary swash-plate angle is that it can be used to reduce the overall control effort of the pump. Disadvantages of using the secondary swash-plate angle are associated with additional containment requirements for the swash plate.

scholarly journals The Impact of Bushing Thickness on the Piston/Cylinder Interface in Axial Piston Pump

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 24971-24977 ◽  
Author(s):  
Jiang Jihai ◽  
Wang Kelong ◽  
Wang Zebo ◽  
Sun Yi
Keyword(s):  
Piston Pump ◽  
Axial Piston Pump ◽  
Piston Cylinder ◽  
The Impact ◽  
Axial Piston

scholarly journals Novel design of hydrodynamic–magnetic compound support for cylinder block–valve plate in axial piston pump

AIP Advances ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 115221
Author(s):  
Jihai Jiang ◽  
Boran Du ◽  
Jian Zhang ◽  
Geqiang Li
Keyword(s):  
Valve Plate ◽  
Piston Pump ◽  
Cylinder Block ◽  
Axial Piston Pump ◽  
Axial Piston ◽  
Novel Design

The Performance Analysis and Experimental Research of Multiple Oil Ports Axial Piston Pump which Able to Control the Movement of Differential Cylinder Directly in the Closed Circuit

2011 ◽  
Vol 308-310 ◽  
pp. 388-400
Author(s):  
Xiao Gang Zhang ◽  
Long Quan
Keyword(s):  
Digital Simulation ◽  
Flow Distribution ◽  
Closed Circuit ◽  
Piston Pump ◽  
Distribution Area ◽  
Axial Piston Pump ◽  
Hydraulic Pump ◽  
Asymmetric Flow ◽  
New Type ◽  
Axial Piston

In order to realize that an asymmetric flow piston pump can control an asymmetric differential cylinder, a proposal about the application of an asymmetric flow-distributing axial piston pump is put forward. The new type of piston pump can output the flows with two different values to control the movement of the differential cylinder directly in the closed circuit and realize much ideal result of the control of the differential cylinder by a single pump. Also a simulation model of the hydraulic pump is established under the circumstance of SimulationX software, considering the characteristics of the movement of an individual piston, the oil compressibility, and the flow distribution area changed with the rotation angle. The key data of the pump is defined by means of digital simulation. In particular, an analysis is made on the dimension of the unloading groove of the port plate and the characteristics of the flow pulse of the pump. Furthermore, an experimental model pump is manufactured, the basic performances of the pump is tested on the experimental platform at various rotatory speeds such as pressure, flow and noise, in the end the accuracy of the principle is verified.

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