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

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

doi:10.1007/s12046-022-02038-3

Cited by 3 publications

(2 citation statements)

References 33 publications

(22 reference statements)

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“…In addition, the control systems of these pumps are fairly complicated and high cost [5]. Thus, it underlines the need of variable discharge pump system that can be controlled using simple control mechanism and use of simple radial piston pump element to give a fairly precise lubrication system in automatic form at a reasonable budget [6][7][8]. Figure 1 shows the schematic of Variable Stroke Linkage with variator slide and worm gear box drive.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of adjustable stroke piston pump with varying fulcrum position

Labade,

Purohit

2023

J. Phys.: Conf. Ser.

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Lubrication of machines is done manually or using automatic systems, the purpose of the automatic lubrication system is to provide specified amount of lubrication at specified lubrication points using a controlled pump system. The proposed work is based on auto control variable displacement pump and referencing to literature survey it is a novel work involves, an innovative kinematic link base stroke changing mechanism. The stoke variation mechanism serves to alter the stroke of the piston pump in controlled manner to control the flow rate of the pump precisely. The design of the linkage for stoke variation has been done. The previous studies deal with the theoretical design and analysis of the components of the variator mechanism. The variator mechanism is used to vary the angle of oscillation of the output and thereby the stroke of the piston of the pumping element. The variator mechanism design includes the design of the worm gear box and its components, variator screw and nut arrangement. Selection of the motor to operate the linkage and the force analysis based on the motor specifications has been carried out. The present work deals the manufacturing and preliminary testing of the device. In that testing was carried out at various input speeds to the pump and the actual discharge from the pump was measured and the volumetric efficiency of the pump at the particular speed and fulcrum position was determined. Results of the two fulcrum positions were compared and evaluated. Further testing will be carried out in the next six months and the optimization of the fulcrum position for desired discharge will be done. The IOT circuit and mechanism will then be configured suitably.

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Section: Introductionmentioning

confidence: 99%

Performance evaluation of adjustable stroke piston pump with varying fulcrum position

Labade,

Purohit

2023

J. Phys.: Conf. Ser.

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“…Research has been carried out on the same by various authors [22][23][24][25][26]. Also, any oscillations in the swash plate would cause output pressure and flow ripples [23,[26][27][28][29]also studied the effect of radial clearance between the piston and cylinder of the pressure compensator elements.The pressure compensator ensures reduced oscillations of the swash plate and retains the efficiency of the pump over a range of varying pressures. Thus, it is essential to design this unit with utmost care.…”

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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Parametric Synthesis of Electrohydraulic Control System for Variable Displacement Pump

Kozlov,

Bilichenko,

Kashkanov

et al. 2023

Lecture Notes in Mechanical Engineering

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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

Cited by 3 publications

References 33 publications

Performance evaluation of adjustable stroke piston pump with varying fulcrum position

Performance evaluation of adjustable stroke piston pump with varying fulcrum position

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

Parametric Synthesis of Electrohydraulic Control System for Variable Displacement Pump

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