Analitycal and Numerical Analysis of Load Gerotor Pumps

Abstract

This paper deals with forces and moments that influence the gearing pair of the rotary trochoidal pump. The objective of this study was to analyze the impact of the pump chamber to load distribution in trochoidal pumps with fixed shaft axes. Problem of contact forces determination is a complex one because of the fact that load is transferred, at the same time, into several contact points. Besides that, there is the analysis of fluid pressure forces which act on the gear wheel tooth flanks and which depend on a large number of influential parameters. A simple physical model and an appropriate analytical method are applied. For the verification of the analytical method, as well as for computation of current moments and support reaction, the finite element method was used.