Abstract

This study investigates the displacement, compression ratio and surface area to volume ratio of epitrochoidal gerotor mechanisms created with non-uniform cross sectional areas perpendicular to the rotor axis of rotation, skew gerotors. An algorithm is presented for modelling the gerotor mechanisms using a quadratic surface as the generating pin. The method used to model the skew gerotors consists of rotating the axis of the generating pin such that it is skewed relative to the rotor axis of rotation. The resulting effects on the displacement, compression ratio and surface area to volume ratio are presented for various configurations.

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