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Design and Analysis of Gerotor with Generalized Shapes for Power-Steering Units

파워 스티어링 유닛용 일반형상 제로터의 설계 및 해석

  • Received : 2010.02.24
  • Accepted : 2010.05.24
  • Published : 2010.07.01

Abstract

A gerotor is used in power-steering units (PSUs) as well as in hydraulic motors or pumps. The inner rotor is developed on the basis of the shape of the outer rotor tooth, which normally has one arc. The method of generating inner rotor on the basis of a generalized shape of outer rotor is analyzed with a view to improve PSU characteristics. An arc-shaped outer rotor with two curvatures was used in the analysis; design parameters such as the shape and curvature of the inner rotor, the flow rate of the gerotor, the position of contact point, and slip velocity are calculated, and these results are shown. This analysis enables us to develop a new design of compact PSUs.

Keywords

Power Steering Unit(PSU);Gerotor;Inner Rotor;Outer Rotor;Epitrochoid Curve;Curvature;Slip Velocity;Flow Rate Irregularity

Acknowledgement

Grant : 안식연구년심층기업지원 사업

Supported by : 대학산업기술지원단

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