Gerotor pump is a special kind of internal
rotary pump, which contains a trochoid profile (commonly called as cycloid).
Generation of trochoid is normally realized by external rolling method, namely
a circle rotating on a fixed circle without slipping. This paper proposes
derivative process of the trochoid profile by means of internal rolling method,
which is that internal surface of a circle contacts with a fixed circle and
rotates around it without slipping. Moreover the instantaneous flow rate can be
obtained by numerically calculating the change ratio of area between the inner
and outer rotors in the outlet region of the gerotor pump, which avoids to complicatedly
Cite this paper
Liu, H. , Lee, J. , Yoon, A. and Kim, S. (2015) Profile Design and Numerical Calculation of Instantaneous Flow Rate of a Gerotor Pump. Journal of Applied Mathematics and Physics
, 92-97. doi: 10.4236/jamp.2015.31013
 Lingeswaramurthy, P., Jayabhaskar, J., Elayaraja, R. and Suresh Kumar, J. (2011) Development of Analytical Model for Design of Gerotor Oil Pump and Experimental Validation. SAE Int. J. Engines, 4, 441-449.
 Jamadar, M., Jose, A., Ramdasi, S. and Marathe, N. (2013) Development of In-house Competency to Build Compact Gerotor Oil Pump for High Speed Diesel Engine Application. SAE Technical Paper, 2013-01-2738.
 Mancò, S., Nervegna, N., Rundo, M., Armenio, G., Pachetti, C. and Trichilo, R. (1998) Gerotor Lubricating Oil Pump for IC Engines. SAE Technical Paper, 982689. http://dx.doi.org/10.4271/982689
 Fabiani, M., Mancò, S., Nervegna, N., Rundo, M., Armenio, G., Pachetti, C. and Trichilo, R. (1999) Modelling and Simulation of Gerotor Gearing in Lubricating Oil Pumps. SAE Technical Paper, 1999-01-0626.
 Mancò, S., Nervegna, N. and Rundo, M. (2000) Effects of Timing and Odd/Even Number of Teeth on Noise Generation of Gerotor Lubricating Pumps for IC Engines. SAE Technical Paper, 2000-01-2630.
 Zhang, D., Perng, C. and Laverty, M. (2006) Gerotor Oil Pump Performance and Flow/Pressure Ripple Study. SAE Technical Paper, 2006-01-0359. http://dx.doi.org/10.4271/2006-01-0359
 Elayaraja, R., Lin-geswaramurthy, P. and Govindarajan, S. (2009) Performance of Gerotor Oil Pump for an Automotive Engine-Prediction Using CFD Analysis and Experimental Validation. SAE Technical Paper, 2009-28-0007.
 Srinivasan, S., Kumar, J.S., Vijayakumar, K. and Venkataraman, P. (2012) Performance Improvement of Automotive Oil Pump to Operate at High Temperatures Employed in Modern Diesel Engines. SAE Technical Paper, 2012-01-0428.
 Xu, X.Z. (2005) Theoretical Research and Simulation of Internal Cycloid Pump. Ph.D Dissertation, Dongnan University, Nanjing.
 Rabie, M.G. (2009) Fluid Power Engineering. McGraw-Hill.