Numerical Simulation Study on the Volumetric Efficiency Loss of CO<sub>2</sub> Swash Plate Axial Piston Pumps
With the aim of addressing the low volumetric efficiency of CO<sub>2</sub> swashplate axial piston pumps, the influence of four volumetric losses—loss of the CO<sub>2</sub> compression retention volume, leakage volume loss of the port pair, leakage volume loss of the plunger...
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MDPI AG
2025-06-01
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| author | Xiyin Wang Sanping Zhou |
| author_facet | Xiyin Wang Sanping Zhou |
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| description | With the aim of addressing the low volumetric efficiency of CO<sub>2</sub> swashplate axial piston pumps, the influence of four volumetric losses—loss of the CO<sub>2</sub> compression retention volume, leakage volume loss of the port pair, leakage volume loss of the plunger pair, and leakage volume loss of the slipper pair—on volumetric efficiency was analyzed using a transient numerical simulation method. The numerical simulation results showed that the real physical property model can accurately describe the compression retention characteristics of CO<sub>2</sub> under high-pressure conditions. CO<sub>2</sub> compression retention volume loss accounted for 28.6% of the volumetric efficiency and was the main factor causing low volumetric efficiency of the piston pump. Leakage volume losses of the slipper pair, the flow distribution pair, and the plunger pair accounted for about 3.4%, 1.5%, and 0.5% of the volumetric efficiency, respectively. These research results provide a reference for volumetric efficiency loss analyses of piston pumps. |
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| spelling | doaj-art-dcb910d8a8c947bf828b543d1e88c6f62025-08-20T02:35:57ZengMDPI AGApplied Sciences2076-34172025-06-011513703210.3390/app15137032Numerical Simulation Study on the Volumetric Efficiency Loss of CO<sub>2</sub> Swash Plate Axial Piston PumpsXiyin Wang0Sanping Zhou1Mechanical Engineering College, Xi’an Shiyou University, Xi’an 710065, ChinaMechanical Engineering College, Xi’an Shiyou University, Xi’an 710065, ChinaWith the aim of addressing the low volumetric efficiency of CO<sub>2</sub> swashplate axial piston pumps, the influence of four volumetric losses—loss of the CO<sub>2</sub> compression retention volume, leakage volume loss of the port pair, leakage volume loss of the plunger pair, and leakage volume loss of the slipper pair—on volumetric efficiency was analyzed using a transient numerical simulation method. The numerical simulation results showed that the real physical property model can accurately describe the compression retention characteristics of CO<sub>2</sub> under high-pressure conditions. CO<sub>2</sub> compression retention volume loss accounted for 28.6% of the volumetric efficiency and was the main factor causing low volumetric efficiency of the piston pump. Leakage volume losses of the slipper pair, the flow distribution pair, and the plunger pair accounted for about 3.4%, 1.5%, and 0.5% of the volumetric efficiency, respectively. These research results provide a reference for volumetric efficiency loss analyses of piston pumps.https://www.mdpi.com/2076-3417/15/13/7032CO<sub>2</sub>swash plate axial piston pumpcompression hold-upleakage lossnumerical simulation |
| spellingShingle | Xiyin Wang Sanping Zhou Numerical Simulation Study on the Volumetric Efficiency Loss of CO<sub>2</sub> Swash Plate Axial Piston Pumps Applied Sciences CO<sub>2</sub> swash plate axial piston pump compression hold-up leakage loss numerical simulation |
| title | Numerical Simulation Study on the Volumetric Efficiency Loss of CO<sub>2</sub> Swash Plate Axial Piston Pumps |
| title_full | Numerical Simulation Study on the Volumetric Efficiency Loss of CO<sub>2</sub> Swash Plate Axial Piston Pumps |
| title_fullStr | Numerical Simulation Study on the Volumetric Efficiency Loss of CO<sub>2</sub> Swash Plate Axial Piston Pumps |
| title_full_unstemmed | Numerical Simulation Study on the Volumetric Efficiency Loss of CO<sub>2</sub> Swash Plate Axial Piston Pumps |
| title_short | Numerical Simulation Study on the Volumetric Efficiency Loss of CO<sub>2</sub> Swash Plate Axial Piston Pumps |
| title_sort | numerical simulation study on the volumetric efficiency loss of co sub 2 sub swash plate axial piston pumps |
| topic | CO<sub>2</sub> swash plate axial piston pump compression hold-up leakage loss numerical simulation |
| url | https://www.mdpi.com/2076-3417/15/13/7032 |
| work_keys_str_mv | AT xiyinwang numericalsimulationstudyonthevolumetricefficiencylossofcosub2subswashplateaxialpistonpumps AT sanpingzhou numericalsimulationstudyonthevolumetricefficiencylossofcosub2subswashplateaxialpistonpumps |