An Experimental Exploration on Pressure-Compensated Swash Plate-Type Variable Displacement Axial Piston Pump

Mondal, Nitesh; Saha, Rana; Sanyal, Debarshi Kumar

doi:10.1007/s40032-021-00796-3

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…In terms of the transient response, it is desirable to avoid pressure peaks in the system and to keep the settling time as short as possible. The dynamic properties of a pressure compensated pump are examined by (Mondal et al, 2022;Mondal et al, 2018). They investigate how the closing speed of the valve at the pump outlet affects the pressure peak.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Properties of Pressure Compensated Pump

Kolář

2024

Engineering Mechanics

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The aim of the study is to evaluate the dynamic properties of a variable displacement pump. It is a pressure compensated axial piston pump with swash plate. The dynamic properties will be evaluated for transient response. The transient response will be induced by the rapid closure of the directional valve located at the pump outlet. The consequence of the directional valve rapid closure is the regulation of the displacement. The main motivation of this paper is to determine, if the pump speed and the set pump displacement affect the control time in and the overshoot. A methodology for measuring the dynamic properties during the transient response is presented in this paper. The experimental circuit used to measure the dynamic properties is described. Subsequently, the time dependence of the pressure at the pump outlet is evaluated when the directional valve at the pump outlet is rapidly closed. The measurements are then used to evaluate the overshoot and the control time in as a function of the pump speed and the pump relative displacement. The results will be further used to create a mathematical model of a pressure compensated pump.

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Section: Introductionmentioning

confidence: 99%

Dynamic Properties of Pressure Compensated Pump

Kolář

2024

Engineering Mechanics

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“…Although the value of eccentricity has been included in the swash plate torque analysis in prior studies [30][31] its effect on the size of the fixed displacement pump and performance of the variable displacement pump, has not been investigated to the best of our knowledge.Computerized Fluid Dynamic (CFD) [32][33] is a good option to analyze the dynamics of fluid inside the pump. There are very few literatures which have described the design procedure of pressure compensator components based on the static swiveling torque acting on the swash plate [23] and produce the concept of design sensitivity or role of various components theoretically [34][35] and experimentally [36].…”

Section: Introductionmentioning

confidence: 99%

Effect of Dynamic Swiveling Torque and Eccentricity on the Design of Compensator Cylinders for a Variable Displacement Axial Piston Pump–Modelling & Simulation

2023

jjmie

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Axial piston pumps are an integral part of hydraulic systems due to their compactness, simple design and quick response to variable loading conditions when provided with a pressure compensator unit. The work comprises a simple method of designing the rate and stroking cylinders of the pressure compensator on the basis of dynamic swiveling torque on the swash plate at cut-in and cut-off conditions, respectively. A key section of this research is the effect of eccentricity on the pump size and performance. A mathematical model of a fixed displacement pump has been adopted to analyze the components of the swash plate swiveling torque, and to determine the torque values at maximum and minimum flow conditions and design the compensator cylinders. Then, the eccentricity is varied and the performances of the fixed and variable displacement pump are recorded through dynamic simulation modelling. The outcome of the study on eccentricity is the reduction in size of the pressure compensator cylinders and thus, the overall pump size.

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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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An Experimental Exploration on Pressure-Compensated Swash Plate-Type Variable Displacement Axial Piston Pump

Cited by 3 publications

References 15 publications

Dynamic Properties of Pressure Compensated Pump

Dynamic Properties of Pressure Compensated Pump

Effect of Dynamic Swiveling Torque and Eccentricity on the Design of Compensator Cylinders for a Variable Displacement Axial Piston Pump–Modelling & Simulation

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

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