Published Paper Details:

Axial piston pumps with constant pressure and variable flow have extraordinary possibilities for controlling the flow by change of pressure. Owing to pressure feedback, volumetric control of the pump provides a wide application of these pumps in complex hydraulic systems, particularly in aeronautics and space engineering.The major obstacle in application of the bent axis piston pump is extremely high cost ( minimum Rs90000/)- over that of the radial piston pump , it ranges in the range of 5 to 6 times the cost of radial piston pump. Hence there is a need to develop a modification in the radial piston pump design that will offer a variable discharge configuration in addition to the advantages of high efficiency and maximum pressure. Thus objective of project is defined to develop a variable displacement linkage that will enable to vary the stroke of an single cylinder axial piston pump , thereby offering to vary the discharge of the pump using manual control. The solution offered is in form of the linkage motion adjuster pump where in This mechanism shown above is to convert rotary motion of crank element into oscillatory output of the output element. The angle of oscillation of the output is a function of the position of pivot element. The pivot element position can be varied as it is placed on a slide . Thus adjustment of the stroke can be done by varying the position of the pivot element. This mechanism is selected with the view that it offers maximum stability and vibration-less performance owing to nature of mounting of the pivot element which is mounted on a screw slide with precise adjustment of pivot position an there by permitting continuously variable position change of pivot and thereby stroke of the output. This enable precise control of the output discharge from the pump linkage .3-D modeling of set-up will be done using Unigraphix Nx-8.0 and CAE of critical component and meshing using Ansys Work-bench 14.5. The experimental validation part of the pump will be done using a test rig developed to evaluate the performance characteristics of the pump.