NDLI: Effects of index angle on flow ripple of a tandem axial piston pump

Content Provider	Springer Nature Link
Author	Xu, Bing Ye, Shao gan Zhang, Jun hui
Copyright Year	2015
Abstract	A high noise level is one of the prominent shortcomings of an axial piston pump which is widely used in industrial and mobile applications. In this paper, a simulation model of an axial piston pump is developed based on a single piston chamber model, for capturing the dynamic characteristics of the discharge flow rate. The compressibility of fluid and main leakages across different friction pairs are considered. The simulation model is validated by a comparison of discharge flow ripple with the measured results using the secondary source method. The main cause of flow ripple is identified by a comparison of the frequency spectrums of actual and kinematic flow ripples. Flow rates with different index angles are analyzed in time and frequency domains. The findings show that an index angle of 20° is the most effective in reducing the flow ripple of a tandem axial piston pump, because the frequency contents at odd harmonics can be cancelled out. A sensitivity analysis is conducted at different pressure levels, speeds, and displacement angles, which reveals that with an index angle of 20°, the sensitivity of flow ripple can be reduced by almost 50% over a wide variety of working conditions.探索转位角对串联泵出口流量脉动的影响, 揭示转位角对流量脉动的影响机理, 获得最佳转位角以减小流量脉动, 以及探索转位角对工况的敏感性。1. 建立基于单柱塞腔模型的单柱塞泵模型, 求解其出口流量脉动特性; 2. 研究不同转位角下串联泵的出口流量脉动, 优选转位角; 3. 对比不同转位角下出口流量脉动对工况的敏感性。1. 对于单个转子使用九柱塞的串联式轴向柱塞泵, 最佳转位角是 20°, 因该角度可消除流量脉动在奇数阶次下的幅值; 2. 在大范围工况下, 转位角为 20° 时可减小约 50% 的流量脉动。
Starting Page	404
Ending Page	417
Page Count	14
File Format	PDF
ISSN	1673565X
Journal	Journal of Zhejiang University SCIENCE A
Volume Number	16
Issue Number	5
e-ISSN	18621775
Language	Chinese
Publisher	Zhejiang University Press
Publisher Date	2015-10-01
Publisher Place	Hangzhou
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Axial piston pump Flow ripple Index angle Sensitivity analysis Mechanical Engineering Civil Engineering Classical and Continuum Physics Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering

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