Prediction of Leakage from an Axial Piston Pump Slipper with Circular Dimples Using Deep Neural Networks

Özmen, Özkan; Sınanoğlu, Cem; Çalışkan, Abdullah; Badem, Hasan

doi:10.1186/s10033-020-00443-5

Cited by 17 publications

(9 citation statements)

References 24 publications

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“…in which Qleak is composed of the flow through the clearance between piston and cylinder. Hydraulic oil leakage has significant effect on the pump efficiency and the leakage depends on the pressure [20]. Only in case of the barrel there will be an additional leakage path for the supply of oil to the interface of piston shoe and slipper pad.…”

Section: Modeling Of Pressure Dynamics Inside the Cylindersmentioning

confidence: 99%

A single stage spool valve for the pressure compensator of a variable displacement pump: design, dynamic simulation and comparative study with a real pump

Mondal¹,

Saha

Sanyal

2022

Sādhanā

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The study is focused on the design of a simplified spool valve to be incorporated in the pressure compensator of a variable displacement axial piston pump in order to perform a comparative study with a commercial pump having a two stage spool valve in its compensator. The design involves evaluation of the spool size and selection of spring from static equilibrium condition to satisfy cut-in and cut-off pressure. Following the development of dynamic model of the system, a design sensitivity analysis of the spool valve has been carried out through simulation to identify the critical sizes of the parameters, which affect the pump performance. By systematic design, it is possible to have a single stage spool valve controlled pressure compensator that can produce performance of the variable displacement axial piston pump at par with the similar commercially available pump.

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Section: Modeling Of Pressure Dynamics Inside the Cylindersmentioning

confidence: 99%

A single stage spool valve for the pressure compensator of a variable displacement pump: design, dynamic simulation and comparative study with a real pump

Mondal¹,

Saha

Sanyal

2022

Sādhanā

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“…The piston of the swash plate piston pump has four pairs of friction pairs, which reciprocate at the same time, and the volume of the cavity of the sealed part between each piston and the cylinder block will change. When the angle between the axis of the cylinder block and the swash plate is between 1°~20° [3], there is displacement, but when the angle between the axis of the cylinder block and the swash plate is zero, the piston does not move, not absorb oil, and the displacement is zero.…”

Section: Slipper Pair Distribution Pairmentioning

confidence: 99%

Disassembling Process and Technology of Axial Piston Pump for Remanufacturing

2022

IJOMAM

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In response to the "circular economy" policy of the green environmental protection industry, the remanufacturing of axial piston pumps has been studied in depth. Firstly, the structure and working principle of each component of the axial piston pump are deeply studied, and then each component of the piston pump is regarded as an independent part, the contact and spatial relationship between the components are analysed. The disassembling specifications of remanufacturing must be strictly observed, and the principles of stability, safety and independence must be adhered to. Secondly, the spatial position of each component and the constraint relationship between adjacent components are studied in turn. The constraint matrix is established from the two aspects of space and contact, and the model of the disassembling device is designed according to the principle of priority and stability in the disassembling process. Then a complete disassembling process and the system are built, and the internal cycle procedure of the disassembling device is designed. Finally, through the simulation experiment and analysis of the virtual model of the disassembling device, the feasibility of the design scheme is verified by taking the former pump as an example. The results show that the disassembling effect of the disassembling device is all qualified and all parts are not damaged. It meets the requirements of stability, safety and independence, and the disassembly of various models and parts, which has the advantage of batch operation and can improve the disassembling efficiency and quality. It is ensured that the produced products meet the standard quality and can reduce the manufacturing cost and time, and save natural resources. Therefore, the disassembling device of the axial piston pump will be of great significance.

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“…Авторы работы [6] исследуют утечки для различной геометрии элементов насоса, но без учета перекоса плунжера во втулке.…”

Section: анализ последних исследований и публикацийunclassified

Учет Влияния Перекоса В Зазоре Между Плунжером И Втулкой На Величину Утечек В Авиационном Аксиально-Плунжерном Насосе

Доценко¹,

Лихошерст²

2021

aktt

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The subject of study in the article is the amount of leaks of the working fluid in the gap between the plunger and the bushing of an aircraft axial-plunger pump, depending on the position of the plunger relative to the bushing. The level of fluid leaks in the gap between the plunger and the cylinder block bushing is a component of volumetric losses, affects the thermal state, wear, the state of the plunger-bushing pair, as well as the level of pressure pulsations of the working fluid and, ultimately, the change in the efficiency of the axial-plunger pump. Researches deal with the influence of piston defects in a bushing on losses through a gap between them that is not discovered in existent literature. The aim of this work is theoretical research of the influence of piston defect on the leakage of working liquid through a gap between the piston and cylindrical bushing in aviation axial-piston pump under workloads. The tasks are: it is necessary to define the losses quantity for the three cases: the axes of piston and bushing coincide; piston is displaced (axes are parallel) with a maximal eccentricity ε = 0.99; piston is twisted in a bushing so that the edges of piston touch a bushing. For the problem-solving methods as follows were used. The task of thin film laminar flow in a gap between piston and bushing was solved by a numeral method in finite-element software. Losses on a piston are considered as a sum of the losses, related to the motion of the piston at a speed W and losses due to the pressure gradient dp/dz. The results are: to obtain the laws of geometrical parameters influence on the losses amount investigation for one piston was undertaken in the first part of the study. It is marked that most losses take place for piston displaced in parallel, and the least - for twisted. Total losses for the real pump on different operational behaviors are considered and volume loss-of-flows are obtained in the second part of the article. Conclusions. Dependences of losses through a gap at the different gap sizes and relative length of bushing for twisted piston are first time obtained. The results allow estimating the losses quantity in a pump on the efficiency of his work at planning and exploitation.

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Prediction of Leakage from an Axial Piston Pump Slipper with Circular Dimples Using Deep Neural Networks

Cited by 17 publications

References 24 publications

A single stage spool valve for the pressure compensator of a variable displacement pump: design, dynamic simulation and comparative study with a real pump

A single stage spool valve for the pressure compensator of a variable displacement pump: design, dynamic simulation and comparative study with a real pump

Disassembling Process and Technology of Axial Piston Pump for Remanufacturing

Учет Влияния Перекоса В Зазоре Между Плунжером И Втулкой На Величину Утечек В Авиационном Аксиально-Плунжерном Насосе

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