FLOW FLUCTUATIONS AND FLUID DYNAMICS IN GEROTOR LUBRICATION PUMPS OF AGRICULTURAL MACHINERY

Abstract

The Gerotor lubricating pump is a type of internal cycloid gear hydraulic
machine. This pump has an enormous flow rate advantage over other pumps of
the same size and simple mechanical structure. Therefore, this type of machine is
an ordinary application in the lubrication system of internal combustion engines.
In this study, the authors evaluate the flow fluctuations and fluid dynamics when
the pump is operating. The mathematical model for the rotor profile design and
the expression for determining instantaneous flow has established. A Gerotor
pump for lubrication of the D20 engine of the agricultural machine has designed
on Solidworks. On that basis, calculate the fluid dynamics through the pump by
the numerical method through the CFX module of Ansys software.