Oil pump models with different gear tooth shapes were established and the internal flow field simulation were conducted by utilizing Pumplinx. Then the characteristics of steady state flux and flow pulsation were analyzed. The research shows that: compared with straight gear pumps, the flow pulsation of other toothed gear pumps is much lower, although they have lower flow at low and medium speed. Especially the flow pulsation of dislocation gear pumps is much lower than straight gear pumps. It decreased by 27% at 1100 rpm and 35% at 2700 rpm, compared with straight gear pumps. Finally the stra...
