Performance evaluation of adjustable stroke piston pump with varying fulcrum position

Abstract

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.