Effects of flow inertia modelling and valve-plate geometry on swash-plate axial-piston pump performance

Mandal, Nimai Pada; Saha, Rana; Sanyal, Debarshi Kumar

doi:10.1177/0959651811426508

Cited by 36 publications

(35 citation statements)

References 15 publications

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“…Expression for modeling the discharge and intake flow represented by the variable q i in Eq. (2) for the piston might be given by the classical orifice equation, which is based on the Bernoulli principle, described in a form of (Manring, 2000;Ericson and Palmberg, 2012;Mandal et al, 2012;Huang et al, 2014;Xu et al, 2015a;2015b) …”

Section: Simulation Modelingmentioning

confidence: 99%

Characteristics of volumetric losses and efficiency of axial piston pump with respect to displacement conditions

Zhang

et al. 2016

JZUS-A

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Abstract:A good efficiency performance of a pump over a wide range of displacement conditions is crucially important for variable pump control systems to save energy. However, according to the literature, less attention has been paid to the understanding of the efficiency, leakage flow, and compression flow characteristics of the pump with respect to displacement conditions. In this study, a test bench was built, and a novel explicit volumetric loss model was proposed to investigate these problems. The overall efficiency is found to drop considerably with the decreasing displacement. The volumetric losses range from 13% to 47% of the total power losses of pump at the rated speed, under the conditions of pressure ranging from 5 to 35 MPa and displacement ranging from 13% to 100% of full displacement. The highest proportion of compression flow losses in the total volumetric losses of pump at the rated speed can reach up to 41% when the pressure and displacement are greater than 30 MPa and 88% of full displacement, respectively; after that, the proportion gradually decreases with decreasing displacement. However, the leakage flow generally increases with decreasing displacement, or may decrease first and begin to increase after the minimum with the further decrease of displacement. In the components of leakage of slipper/swash plate pair, the squeeze leakage is found to reach a magnitude equal to that of the Poiseuille leakage. The findings can guide the further research and design of pumps with better efficiency performance.

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Section: Simulation Modelingmentioning

confidence: 99%

Characteristics of volumetric losses and efficiency of axial piston pump with respect to displacement conditions

Zhang

et al. 2016

JZUS-A

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“…Seeniraj and Ivantysynova optimized valve plate geometry based on multiobjective optimization method considering both noise and efficiency [11]. Mandal et al analyzed the effects of different silence grooves on the flow pulsation of an axial piston pump and optimized the structure parameters based on the parametric analysis [12,13]. However, the noise problem is a systematic behavior.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Lumped Parameters/Finite Element/Boundary Element Model to Predict the Vibroacoustic Characteristics of an Axial Piston Pump

Zhang

et al. 2017

Shock and Vibration

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Low noise axial piston pumps become the rapid increasing demand in modern hydraulic fluid power systems. This paper proposes a systematic approach to simulate the vibroacoustic characteristics of an axial piston pump using a hybrid lumped parameters/finite element/boundary element (LP/FE/BE) model, and large amount of experimental work was performed to validate the model. The LP model was developed to calculate the excitation forces and was validated by a comparison of outlet flow ripples. The FE model was developed to calculate the vibration of the pump, in which the modeling of main friction pairs using different spring elements was presented in detail, and the FE model was validated using experimental modal analysis and measured vibrations. The BE model was used to calculate the noise emitted from the pump, and a measurement of sound pressure level at representative field points in a hemianechoic chamber was conducted to validate the BE model. Comparisons between the simulated and measured results show that the developed LP/FE/BE model is effective in capturing the vibroacoustic characteristics of the pump. The presented approach can be extended to other types of fluid power components and contributes to the development of quieter fluid power systems.

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“…Shu Wang [15] putted forward that the valve plate design was a critical issue in addressing the cavitation or aeration phenomena in the axial piston pump. N. P. Mandal et al [16] developed a methodology for designing a swash-plate axial piston pump whose barrel kidney are wider than the bridges separating the kidney ports on the plate. Besides reducing pressure ripples and avoiding cavitation for minimizing the fluid-borne noise, maximization of the pump discharge has also been considered in formulating an objective function to be minimized.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the structure of water axial piston pump and cavitation of plunger cavity based on the Kriging model

Ze-gang¹,

Xiao²,

Xu³

et al. 2016

J. vibroeng.

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The cavitation flow of axial piston pump was simulated by the FLUENT software. Simulation results show that 1) Plunger cavity cavitation degree increase nearly one time when the piston pump rotation rate increase from 1500 r/min to 3000 r/min; 2) The axial piston pump L shape throttling groove is more conductive to inhibiting cavitation of plunger cavity than the V shape; 3) The variation law which shows the influence of the thickness of cylinder kidney shape port on the cavitation of plunger cavity. This paper put forward the two-way inclined type cylinder barrel kidney shape port, which was beneficial to improve the self-sucking of the plunger cavity under high speed rotation and could inhibit the cavitation of plunger cavity. The Kriging agent model of has been established by taking the configuration parameters of one-way inclined cylinder kidney shape port as independent variables and the mean value of the gas volume fraction of plunger cavity as target function, based on the Kriging interpolation principle. The optimized structure of the one-way inclined type cylinder barrel kidney shape port is obtained through the Kriging agent model which is optimized by using improved genetic algorithm. The structure of the cylinder kidney shape port and the valve plate throttling grooves are obtained, which mostly inhibit the cavitation of plunger cavity with above analysis. The structure has a strong inhibitory on the plunger cavity cavitation through the simulation analysis and verification.

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Effects of flow inertia modelling and valve-plate geometry on swash-plate axial-piston pump performance

Cited by 36 publications

References 15 publications

Characteristics of volumetric losses and efficiency of axial piston pump with respect to displacement conditions

Characteristics of volumetric losses and efficiency of axial piston pump with respect to displacement conditions

A Hybrid Lumped Parameters/Finite Element/Boundary Element Model to Predict the Vibroacoustic Characteristics of an Axial Piston Pump

Optimization of the structure of water axial piston pump and cavitation of plunger cavity based on the Kriging model

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