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Design of rotor profile of internal gear pump for improving fuel efficiency

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Abstract

The internal gear pump has been widely used in vehicles because of durability and downsizing, but torque and noise of rotor in the pump have been required to be improved for fuel efficiency. In this study, shape function of the rotor with multiple profiles (ellipse 1-involute-ellipse 2) was derived, and performances (flow rate, irregularity, specific sliding and pressure angle), which were related to torque and noise, were calculated by a prediction algorithm of theoretical equations. The optimal ranges of each design parameter were determined on the basis of analysis results of about 500,000 cases of rotor profiles by using the automated design and the multiple calculation programs developed. Based on the analysis results, the rotor profiles were suggested for improving fuel efficiency, and the performance tests for them were carried out for verifying the analysis.

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Authors and Affiliations

  1. Research Institute of Mechanical Technology, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu,Busan, South Korea, 609-735

    Jun-Ho Bae & Chul Kim

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  1. Jun-Ho Bae
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  2. Chul Kim
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Correspondence to Chul Kim.

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Bae, JH., Kim, C. Design of rotor profile of internal gear pump for improving fuel efficiency. Int. J. Precis. Eng. Manuf. 16, 113–120 (2015). https://doi.org/10.1007/s12541-015-0014-4

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  • DOI: https://doi.org/10.1007/s12541-015-0014-4

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