Research on flow characteristic for a novel two-dimensional two-piston pump

In order to meet the demand of light weight, high efficiency and high power density for aircraft, a novel two-dimensional two-piston pump is presented. It applies a piston with two degrees of freedom for achieving the functions of oil distribution and oil suction and discharge, and it also use the way of mutual superposition of outlet flow from two pistons to eliminate flow pulsation. In terms of the volumetric efficiency, each piston chamber has four times of the motion of oil suction and discharge in a circle, and the pump is eight times more than a single plunger piston of axial piston pump. In detail, in the process of movement, there only produce the rolling friction between the roller and the curved rail. An experimental prototype is performed. Finally, text results indicate that when the rotation velocity is 5000r/min, the output flow can acquire 108.9L/min.