TY - EJOU AU - Yu, Lingzhi AU - Gu, Yunqing AU - Mou, Jiegang AU - Wu, Denghao AU - Chen, Zhenfu AU - Ren, Yun TI - A Numerical Investigation on the Characteristics of the Radial Force in a Cycloid Gerotor Pump T2 - Fluid Dynamics \& Materials Processing PY - 2020 VL - 16 IS - 5 SN - 1555-2578 AB - 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. KW - Cycloid gerotor pump; radial force; oil groove structure; pressure distribution DO - 10.32604/fdmp.2020.09509