On torque of swash-plate-type water hydraulic axial piston motor
An integrated torque model for a swash-plate-type water hydraulic axial piston motor (WHAPM) with four symmetrical pre-compression angles has been developed according to the physicochemical characteristic differences between raw water and mineral oil. It consists of a torque sub-model (including the friction effect) and a dynamic pressure sub-model. The model takes several factors into account, such as water characteristics, the effects of the dynamic pressure inside the piston chamber, the piston dynamics, the piston friction, the water compressibility, and the pre-compression angle at the starting and ending points of the inlet and outlet. Numerical simulation was performed to examine the effects of (a) pre-compression angle, (b) reliefgroove obliquity, (c) rotor speed, (d) piston-chamber dead volume, (e) friction and (f) viscous damping coefficient on the dynamic pressure and the output torque characteristics. The .results indicate that the pre-compression angle and the relief-groove obliquity have significant effects on the torque characteristics. Moreover, the developed theoretical formulas of the torque transition and the mean torque and displacement have been presented.
Axial piston motor Dynamic pressure Torque characteristics Pre-compression angle Water hydraulics
Songlin Nie Shuang Peng Zhiwei Hu Jun Ruan Yongping Li
College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technolo School of Mechanical Science and Engineering, Huazhong University of Science & Technology, Wuhan 430 School of Urban and Environmental Science, Peking University, Beijing 100871, China
国际会议
杭州
英文
562-566
2009-04-08（万方平台首次上网日期，不代表论文的发表时间）