Abstract
Gerotor pumps are a common choice for low-pressure fluid systems, such as fuel or lubricating oil distribution. Starting from a patented solution, gerotor devices featuring radial ports are presented and discussed: major sizing constraints due to low-pressure operation are defined and their influence over rotor profile geometry assessed. In order to maximize the pump displacement, a comparison between several profile geometries is set up: circular, elliptic and asymmetric lobes are presented and mathematically described using a simple unified approach, while the comparison indexes are defined and discussed. Pros and cons of each geometry type are finally assessed.
Published Version
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