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Theoretical and experimental investigation on the efficiency of a novel roller piston pump

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2023年第9期24卷 762-781页

作者： Chenchen ZHANG Yiren ZANG Heyuan WANG Bin MENG Sheng LI Jian RUAN College of Mechanical Engineering Zhejiang University of TechnologyHangzhou 310023China

This study presents a novel roller piston pump,in which a cam guide-roller type rolling support is adopted to replace the sliding pair support of the swash plate-slipper pair to achieve the oil suction and discharge of the piston *** addition,the shaft distribution is used to replace the original valve plate distribution and the driving shaft is used as the distribution shaft to remove the valve plate structure,which greatly simplifies the design of the axial piston *** a configuration largely reduces the number of sliding friction pairs of the pump,and avoids the influence of the sliding friction pair on it under high-speed and variable-speed ***,mathematical models of the mechanical and volumetric efficiencies of the roller pump are deduced respectively through force analysis and the compressibility *** on the numerical simulation of MATLAB and AMESim,the effects of load pressure and rotational speed on mechanical and volumetric efficiencies are studied respectively,and it is verified that the roller pump has no structural flow *** prototype pump is then designed and built,along with a special test *** outlet pressure,outlet flow,and torque of the pump under different load pressures and rotational speeds are measured,and the mechanical and volumetric efficiencies of the prototype pump under various load pressures and rotational speeds are *** experimental results are in good agreement with the simulated *** the load pressure is 8 MPa and the speed is 5000 r/min,the mechanical and the volumetric efficiencies are 85.5% and 96.8%,*** the speed is increased to 10000 r/min,the mechanical and the volumetric efficiencies are 66.7% and 95.6%,*** experimental results show that the proposed roller piston pump has excellent efficiency under wide-speed and high-speed conditions and can be a potential solution as a fuel pump in aerospace fuel systems.

关键词： Roller piston pump Shaft distribution mechanism Mechanical efficiency Volumetric efficiency aerospace pump

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