Design of port plate in gerotor pump for reduction of pressure pulsation |
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Authors: | Sang-Yeol Kim Yun-Joo Nam Myeong-Kwan Park |
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Affiliation: | (1) Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117576 Singapore, Singapore;(2) Engineering Dean’s Office, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576, Singapore |
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Abstract: | The pressure pulsation due to the gear geometry of the gerotor (generalized rotor) pump mainly occurs in an instant that the
chamber of the gerotor enters the delivery port and leaves the suction one. Such a pressure pulsation may result in undesirable
vibration and noise of pump components as well as cavitation in hydraulic system. Therefore, it is very important to examine
the pressure characteristic of the gerotor pump at its design and analysis stages. In this paper, in order to reduce the pressure
pulsation in the gerotor pump, the port plate with the relief grooves is designed by referring to as notch of vane pump and
relief groove of piston pump. A series of the theoretical analyses on the pressure pulsation is performed in consideration
of various design parameters of the port plate, including the installation positions of the port inlet/ outlet and the groove
width, and the operating conditions such as rotational velocity and delivery pressure. |
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