- Volume 34 Issue 7
DOI QR Code
Design and Analysis of Gerotor with Generalized Shapes for Power-Steering Units
파워 스티어링 유닛용 일반형상 제로터의 설계 및 해석
- Jeong, Jae-Tack (School of Mechanical Systems Engineering, Chonnam Nat'l Univ.) ;
- Shin, Soo-Sik (Sinjin Precision Co., LTD.) ;
- Kim, Kap-Tae (Sinjin Precision Co., LTD.)
- Received : 2010.02.24
- Accepted : 2010.05.24
- Published : 2010.07.01
A gerotor is used in power-steering units (PSUs) as well as in hydraulic motors or pumps. The inner rotor is developed on the basis of the shape of the outer rotor tooth, which normally has one arc. The method of generating inner rotor on the basis of a generalized shape of outer rotor is analyzed with a view to improve PSU characteristics. An arc-shaped outer rotor with two curvatures was used in the analysis; design parameters such as the shape and curvature of the inner rotor, the flow rate of the gerotor, the position of contact point, and slip velocity are calculated, and these results are shown. This analysis enables us to develop a new design of compact PSUs.
Power Steering Unit(PSU);Gerotor;Inner Rotor;Outer Rotor;Epitrochoid Curve;Curvature;Slip Velocity;Flow Rate Irregularity
Grant : 안식연구년심층기업지원 사업
Supported by : 대학산업기술지원단
- Nam, K. W., Jo, S. H. and Park, J. I., 2006,"Numerical Simulation in the IC EngineLubricating Gerotor Oil Pump," Trans. of theKSME(B), Vol. 30, No. 10, pp. 1019-1025 https://doi.org/10.3795/KSME-B.2006.30.10.1019
- Won, C. S., Hur, N. and Kwon, S. H., 2003,"Flow Analysis fo Automotive Oil Pump ofGerotor Type," KFMA, Vol. 6, No. 4, pp. 7-13
- Gamez-Montero, P. J. and Codina, E., 2002,"Flow Ripple in a Gerotor Pump," SAETechinical Paper Series, 2002-01-1375.
- Sasaki, H, Inui, N., Shimada, Y. and Ogata, D.,2008, "Development of High Efficiency P/MInternal Gear Pump Rotor (Megafloid Rotor),"SEI Technical Review. No. 66, pp. 124-128.
- Jung, S. Y., Han, S. M. and Kim, C., 2009,"Development of an Automated Design Systemfor Oil Pumps with Ellipse Lobe Profile," J. ofthe KSPE, Vol. 26, No. 1, pp. 120-129.
- Lee, S.-C. and Lee, S.-N., 1995, "Design andAnalysis of Gerotor for Hydraulic Motors," J.KSTLE, Vol. 11, No. 2, pp. 63-70.
- Lee, S.-C., 2006, "Profile Design of the InnerRotor of a Gerotor by the Composite Curve ofCircular Arcs," J. KSTLE, Vol. 22, No. 2, pp.79-86.
- Kim, J. H., Kim, C. and Kim, C. H., 2006,"Optimum design on the lobe shapes of GerotorOil Pump," KSPE, Vol. 23, No. 4 pp. 124-131.