Open Access

ARTICLE

A Numerical Investigation on the Characteristics of the Radial Force in a Cycloid Gerotor Pump

Lingzhi Yu¹, Yunqing Gu^1,*, Jiegang Mou¹, Denghao Wu¹, Zhenfu Chen², Yun Ren³

1 College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou, 310018, China
2 College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
3 Zhijiang College, Zhejiang University of Technology, Shaoxing, 312030, China

* Corresponding Author: Yunqing Gu. Email:

Fluid Dynamics & Materials Processing 2020, 16(5), 1007-1018. https://doi.org/10.32604/fdmp.2020.09509

Received 24 December 2019; Accepted 04 August 2020; Issue published 09 October 2020

Abstract

In order to improve the performances of a cycloid gerotor pump, the variations of the radial force induced by different rotating speeds and outlet pressures are analyzed numerically. Using the numerical simulations as a basis, an improved oil inlet and outlet groove structure is proposed. The results show that the radial force decreases with the decrease of the outlet pressure and of the rotor speed. Compared with the original model, the large-end oil inlet line and pressure line of the new oil groove are claw-shaped. This configuration can effectively weaken the pressure changes inside the gerotor pump and reduce accordingly the radial force on the inner rotor.

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Keywords

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