Performance optimization for high speed axial piston pump considering cylinder block tilt  

作　　者：Haogong XU Junhui ZHANG Shoujun ZHAO Junyuan CHEN Weidi HUANG Xiaochen HUANG Fei LYU Qi SU Bing XU 

机构地区：[1]State Key Laboratory of Fluid Power and Mechatronic Systems,Zhejiang University,Hangzhou 310058,China [2]Beijing Institute of Precision Mechatronics and Controls,Beijing 100076,China [3]Jiangsu Jinling Intelligent Manufacturing Research Institute Co,Ltd,Nanjing 210006,China

出　　处：《Chinese Journal of Aeronautics》2023年第9期437-450,共14页中国航空学报（英文版）

基　　金：This study was co-supported by the National Key R&D Program of China(No.2019YFB2005101);National Outstanding Youth Science Foundation of China(No.51922093);the National Natural Science Foundation of China(No.52105075);the National Natural Science Foundation of China(No.51890882);the Natural Science Foundation of Zhejiang Province(No.LQ21E050022).

摘　　要：Increasing the rotating speed is considered as an efficient approach to upgrade the power-to-weight ratio in an axial piston pump,but penalized by more leakage and more severe wear resulting from the adverse cylinder block tilt.Previous studies mainly focused on the bearing characteristic of the valve plate/cylinder block pair,but the spline coupling also plays a key role in the undesired cylinder block tilt,which has been little studied.A theoretical model for the rotating assembly is presented to investigate the effect of the spline coupling length on the cylinder block tilt and the performance of the valve plate/cylinder block pair.A typical high-speed axial piston pump with the displacement of 5.2 mL/r at 10000 r/min was studied by simulation and experiment.It shows that the optimal spline coupling length is one value increased by 2 mm from the original,bringing a remarkable leakage reduction under the high-speed condition by decreasing the cylinder block tilting angle.The experiment result matches well with the simulation.The influences of the spline coupling on the cylinder block tilt and the leakage were demonstrated.

关 键 词：Cylinder block tilt High-speed axial piston pump LEAKAGE Spline coupling WEAR 

分 类 号：TH322[机械工程—机械制造及自动化] V433[航空宇航科学与技术—航空宇航推进理论与工程] V249.1