轴向柱塞泵织构化柱塞副低压程润滑特性研究

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关键词：轴向柱塞泵；织构化柱塞副；润滑特性；低压程；偏心量

中图分类号：TH117

DOI：10.3969/j.issn.1004-132X.2025.11.007

Abstract： The lubrication states of piston-cylinder pairs were the key to determining the service life of axial piston pumps. Therefore，a textured piston-cylinder pair was proposed to reduce the failure risk of oil film under low-pressure stroke.A textured lubrication model for piston-cylinder pairs was established based on a dynamic node mesh to address the variable support length of piston. Besides，the pressure equationwas discretized by using a finite diference method，the pressure and thickness distribution of oil films were obtained bya double-layer cycle of film pressure and eccentricity. The influences of working parameters and texture parameters on lubrication characteristics were analyzed. The results show that the greater thetextureradius and texture area ratio，the better the antifriction effectiveness，and theorderofthe effect in reducing friction（from high to low） is： texture area ratio，texture radius，texture depth. Both increasing the texture radius and decreasing the texture depth may enhance the bearing capacity of oil film，and a texture area ratio of 30% has higher adaptability. Combined with loading test，the maximum reduction in friction coefficient of textured specimen compared to that of non-textured specimen is as 29.8% . The results may provide some references for frictional design of axial piston pumps.

Key Words：axial piston pump；textured piston-cylinder pair; lubrication characteristics;low-pressure stroke; eccentricity

0 引言

轴向柱塞泵具有功率谱高和结构紧凑等优点[1-2]，已广泛应用于工程机械[3]、海洋装备[4和航空仪器[5等领域。（剩余15029字）