Research Papers

Influence of Gerotor Performance in Varied Geometrical Design Parameters

[+] Author and Article Information
Chiu-Fan Hsieh1

Department of Mechanical and Computer-Aided Engineering, National Formosa University, 64 Wunhua Road, Huwei, Yunlin, Taiwan 63208, R.O.C.cfhsieh@nfu.edu.tw


Corresponding author.

J. Mech. Des 131(12), 121008 (Nov 17, 2009) (7 pages) doi:10.1115/1.4000484 History: Received February 14, 2009; Revised September 05, 2009; Published November 17, 2009; Online November 17, 2009

Gerotor performance is influenced by sealing properties, area efficiency, contact stress, and outlet pressure. This paper uses the hypotrochoidal curve to generate the gerotor profile, and adopts the curvature difference method to assess the sealing property and predict the stress on the rotor profile. Numerical examples show that this method can successfully estimate and forecast the rotor sealing and the Hertz stress variation. For confirmation, these results are proved by theoretical stress calculations and software simulations. This paper also presents the results of sealing performance, stress variation, area efficiency, and outlet pressure for various geometrical design parameters. These results can serve as a pump performance reference, assisting designers wishing to create a better gerotor pump.

Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Coordinate system

Grahic Jump Location
Figure 2

Design results: (a) μ=2, (b) μ=1.5, and (c) μ=1.1

Grahic Jump Location
Figure 8

Forecasted stress on the rotor profile: (a) μ=2, (b) μ=1.5, and (c) μ=1.1

Grahic Jump Location
Figure 9

Stress simulation using FEM software: (a) μ=2, (b) μ=1.5, and (c) μ=1.1

Grahic Jump Location
Figure 12

Outlet pressure

Grahic Jump Location
Figure 11

Hydraulic pressure model

Grahic Jump Location
Figure 10

Area efficiency

Grahic Jump Location
Figure 7

Contact length analysis

Grahic Jump Location
Figure 6

Stress analysis using the Hertz formula

Grahic Jump Location
Figure 5

Angle range quantity of influence area

Grahic Jump Location
Figure 4

Influence area on gerotor profile

Grahic Jump Location
Figure 3

Curvature difference analysis (R=5 mm)



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In