| Wang Xiaojing (王晓晶)* **,Chen Kaifang* **,Jiang Yufan* **,Meng Zeyi* **,Hu Shanliang***.[J].高技术通讯(英文),2026,32(3):282~288 |
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| Study on internal leakage and volumetric efficiency of continuous rotary electro-hydraulic servo motor |
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| DOI：10. 3772 / j. issn. 1006-6748. 2026. 03. 007 |
| 中文关键词: |
| 英文关键词: vane motor, internal leakage, volumetric efficiency, mechanical efficiency |
| 基金项目: |
| Author Name | Affiliation | | Wang Xiaojing (王晓晶)* ** | (*Beijing Key Laboratory of Intelligent Construction Equipment for Urban Building Construction, Beijing University of Civil Engineering and Architecture, Beijing 102626, P. R. China. )
(**Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicle, Beijing University of Civil Engineering and Architecture, Beijing 102616, P. R. China. )
(***School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, P. R. China) | | Chen Kaifang* ** | | | Jiang Yufan* ** | | | Meng Zeyi* ** | | | Hu Shanliang*** | |
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| 中文摘要: |
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| 英文摘要: |
| To investigate internal leakage and volumetric efficiency of a continuous rotary electro-hydraulic
servo motor, analytical models of leakage and friction torque are developed. Using these models, in-
ternal leakage and efficiency characteristics are evaluated under different operating conditions, and
an appropriate oil-film thickness for the main friction pairs is determined. A thermal analysis of each
leakage path is then conducted to obtain the minimum allowable film thickness that avoids local over-
heating. A computational fluid dynamics ( CFD ) model of the dominant vane tip-stator clearance is
established ( meshed in ICEM-CFD ( integrated computer engineering and manufacturing-CFD ) and
solved in Fluent) to reveal the pressure distribution and leakage variation with pressure differential.
Finally, an experimental test bench is built to measure leakage and volumetric efficiency, validating
the analytical and CFD predictions and providing a basis for subsequent efficiency improvement and
control design. |
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