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http://dx.doi.org/10.3795/KSME-A.2015.39.2.169

Optimal Design of Gerotor with Combined Profiles (Three-Ellipse and Ellipse-Involute-Ellipse) Using Rotation and Translation Algorithm  

Bae, Jun Ho (Research Institute of Mechanical Technology, Pusan Nat'l Univ.)
Lee, Ho Ryul (Dept. of Creative Engineering, Pusan Nat'l Univ.)
Kim, Chul (Research Institute of Mechanical Technology, Pusan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.39, no.2, 2015 , pp. 169-177 More about this Journal
Abstract
Because technology of the sintering process is highly advanced, the gerotor used in the internal gear pumps of vehicles has advantages for manufacturing complex profiles and obtaining durability and minimization. However, it has been necessary to continuously improve the flow rate and noise of internal gear pumps for better fuel efficiency. The existing rotor was designed using a translation algorithm. This caused a discontinuity of the rotor profile, which had adverse effects on the performance. In this study, to improve the discontinuity of the profile, a new design program using a rotation and translation algorithm was developed, and two types of combined multiple profiles (three-ellipses and ellipse 1-involute-ellipse 2) were generated. Then, the performances (flow, flow rate, specific sliding, and pressure angle) of these profiles were calculated. On the basis of the calculation results for the performances, optimal designs of the two types were carried out and verified by comparing their performances with those of the existing rotor profiles.
Keywords
Gerotor; Performance; Fuel Efficiency; Discontinuity of Rotor Profile; Combined Profile; Optimal Design;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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