Mathematical Modeling and Experimental Research of Operating Parameters of an Axial Piston Water Hydraulic Pump

2021 ◽  
Author(s):  
Nenad Todic ◽  
Radovan Petrovic ◽  
Slobodan Savic ◽  
Maja Andjelkovic
Keyword(s):  
Mathematical Modeling ◽  
Experimental Research ◽  
Operating Parameters ◽  
Hydraulic Pump ◽  
Water Hydraulic ◽  
Axial Piston

Cavitation Effect to the Hydraulic Piston Pump Flow Pulsation

2014 ◽  
Vol 599-601 ◽  
pp. 230-236 ◽  
Author(s):  
Huan Zhang
Keyword(s):  
Piston Pump ◽  
Flow Pulsation ◽  
Hydraulic Pump ◽  
Fluid Field ◽  
Cavitation Effect ◽  
Hydraulic Piston Pump ◽  
Hydraulic Axial Piston Pump ◽  
Water Hydraulic ◽  
Rotary Speed ◽  
Axial Piston

The flow pulsation is one of the main factors, which affect the performance of water hydraulic piston pump, and cavitation also has importance effect on flow pulsation. In this paper, CFD technology is used to simulate visually the porting process，which causes the flow pulsation in water hydraulic axial piston pump. As a result, the flow pulsation rates and other parameters on fluid-field corresponding to different rotary speed and different loading are obtained respectively when cavitation is considered and not, which can present theoretic references for the development of water hydraulic pump.

scholarly journals Psychoacoustic Evaluation of Hydraulic Pumps

2021 ◽  
Vol 13 (13) ◽  
pp. 7320
Author(s):  
Tobias Pietrzyk ◽  
Markus Georgi ◽  
Sabine Schlittmeier ◽  
Katharina Schmitz
Keyword(s):  
Sound Pressure ◽  
Paired Comparison ◽  
Hydraulic Drive ◽  
Operating Parameter ◽  
Gear Pump ◽  
Hydraulic Systems ◽  
Hydraulic Pump ◽  
Listening Tests ◽  
Internal Gear ◽  
Axial Piston

In this study, sound measurements of an axial piston pump and an internal gear pump were performed and subjective pleasantness judgements were collected in listening tests (to analyze the subjective pleasantness), which could be seen as the inverse of the subjective annoyance of hydraulic drives. Pumps are the dominant sound source in hydraulic systems. The noise generation of displacement machines is subject of current research. However, in this research only the sound pressure level (SPL) was considered. Psychoacoustic metrics give new possibilities to analyze the sound of hydraulic drive technology and to improve the sound quality. For this purpose, instrumental measurements of the acoustic and psychoacoustic parameters are evaluated for both pump types. The recorded sounds are played back to the participants in listening tests. Participants evaluate them regarding the subjective pleasantness by means of paired comparison, which is an indirect scaling method. The dependence of the subjective pleasantness on speed and pressure was analyzed for both pump types. Different regression analyses were carried out to predict the subjectively perceived pleasantness or annoyance of the pumps. Results show that a lower speed is the decisive operating parameter for reducing both the SPL and the annoyance of a hydraulic pump.

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.

Pressure Transients in an Axial Piston Hydraulic Pump

1974 ◽  
Vol 188 (1) ◽  
pp. 189-199 ◽  
Author(s):  
B. O. Helgestad ◽  
K. Foster ◽  
F. K. Bannister
Keyword(s):  
Noise Reduction ◽  
Operating Conditions ◽  
Valve Plate ◽  
Hydraulic Pump ◽  
Noise Emission ◽  
Relief Valve ◽  
Pressure Transients ◽  
Theoretical Predictions ◽  
Axial Piston

A method is given for calculating pressure transients in an axial piston hydraulic pump. Some theoretical predictions are given of the effect of port timing and the effect of introducing restricting grooves at the ends of the kidney ports in the valve plate and suggestions are made of the effects of these parameters on noise emission; comparative measurements of noise are then quoted that support the general arguments. A parallel shot is recommended as the best compromise for the restrictor groove geometry to give good results over the widest range of operating conditions, including reverse rotation. Finally, mention is made of the use of a relief valve in the port plate for noise reduction.

Research on Efficiency Model of the Variable Hydraulic Pump Based on System Identification

2012 ◽  
Vol 184-185 ◽  
pp. 421-428 ◽  
Author(s):  
Xiang Sheng Li
Keyword(s):  
System Identification ◽  
Functional Relationship ◽  
Least Square Method ◽  
Calculation Model ◽  
Least Square ◽  
Hydraulic Pump ◽  
Polynomial Expression ◽  
Identification Theory ◽  
Set Up ◽  
Axial Piston

For the complication and imprecision of the calculation of efficiency about variable hydraulic pump, based on system identification theory and thought of identification with the modeling，the general polynomial expression is proposed to describe the efficiency of variable hydraulic pumps and the functional relationship between parametric and to set up the model using the least square method of parameters identification, and calculation model of the efficiency is established as an example for a type of axial piston variable hydraulic pump, the model is verified by the experimental data, and it’s fitting accuracy is over 87%.

Hydrodynamics in a jet bubbling reactor: Experimental research and mathematical modeling

AIChE Journal ◽  
2017 ◽  
Vol 64 (5) ◽  
pp. 1814-1827 ◽  
Author(s):  
Zhengliang Huang ◽  
Haotong Wang ◽  
Yun Shuai ◽  
Tianqi Guo ◽  
Musango Lungu ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Experimental Research
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