Abstract
Keywords:
Automated design system, Oil pump, Optimization, Rotor, Trochoid
Abstract
A gerotor pump is suitable for oil hydraulics of machine tools, automotive engines, compressors, constructions and other various applications, which are highly accepted by designers. Especially the pump is an essential machine element of an automotive engine to feed lubricant oil. Also, gerotor pumps with unsettled design parameters have not been sufficiently analyzed from a theoretical view of design. Therefore, it is still very difficult for the pump designer and manufacturer to decide the specifications for gerotor pump required by users. The main components of the pump are the rotor; usually the outer one is characterized by lobes with circular shape, while the inner rotor profile is determined as conjugate to the other. In this study, the design optimization has been carried out to determine the design parameters that maximize the specific flow rate and minimize the flow rate irregularity. Theoretical analyses and optimal design of the gerotor oil pump have been performed by mathematical base, numerical method and knowledge of kinematics. The integrated system which is composed of three main modules has been developed through AutoLISP & Visual Basic language and CAD method considering various design parameters. An optimally designed model for a general type of a gerotor pump has been generated and experimentally verified for the pump performances. Results obtained using the system enable the designer and manufacturer of oil pump to be more efficient in this field.