TITLE:
Profile Design and Numerical Calculation of Instantaneous Flow Rate of a Gerotor Pump
AUTHORS:
Hao Liu, Jae-Cheon Lee, Alex Yoon, Sang-Tae Kim
KEYWORDS:
Gerotor Oil Pump, Trochoid, Internal Rolling Method, Instantaneous Flow Rate
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.3 No.1,
January
28,
2015
ABSTRACT: 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
derivative process.