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Effects of adjustable and control parameters on performance characteristics of multi-controlled variable displacement pump
Authors:
Duy-Dat Nguyen1
, Dinh-Vu Dang1
, Minh-Kha Nguyen1
, Van-Hai Trinh1
1Institute of Vehicle and Energy Engineering, Le Quy Don Technical University, 100000 Hanoi, Vietnam
Received: 3 June 2024
Revised: 4 November 2024
Accepted: 15 November 2024
Published: 31 March 2025
Abstract:
Energy efficiency and improving the performance of high-power hydraulic
systems in machinery are essential trends. Various methods can be
employed, and the widespread use of multi-controlled hydraulic pumps is
one of the most popular approaches. In this work, the effects of
adjustable and control parameters on the pump's performance
characteristics are investigated. Regarding this, based on the operation
principle of hydraulic pumps with a multi-function controller, a dynamic
model within the mathematical equations and the corresponding
simulation model are developed. An experiment study is also conducted
to confirm the accuracy of the theoretical model. From the theoretical
and experimental results with a given pump configuration, it is seen that
the pump flow is regulated according to the changing the control signal
within a range of 0 to 500 mA and varying load between 40 and 350 bar,
and the pump power is adjusted according to the initial setting force of
the pressure compensator from 50 to 150 bar which is guaranteed to
correspond to the working load. The initial setting force adjustment of
the load sensing valve should not exceed 400 N due to flow fluctuations
and pump overload. The research results provide a foundation for
properly installing and adjusting the pump to enhance its operational
efficiency in hydraulic systems.
Keywords:
Hydraulic pump, Multi-function controller, Control parameters, Pump characteristics, Multi-function test bench
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© 2025 by the authors. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)
Volume 10
Number 4
December 2025
Last Edition
Volume 10
Number 4
December 2025
How to Cite
D.-D. Nguyen, D.-V. Dang, M.-K. Nguyen, V.-H. Trinh, Effects of Adjustable and Control Parameters on Performance Characteristics of Multi-Controlled Variable Displacement Pump. Applied Engineering Letters, 10(1), 2025: 14-24.
https://doi.org/10.46793/aeletters.2025.10.1.2
More Citation Formats
Nguyen, D.-D., Dang, D.-V., Nguyen, M.-K., & Trinh, V.-H. (2025). Effects of Adjustable and Control Parameters on Performance Characteristics of Multi-Controlled Variable Displacement Pump. Applied Engineering Letters, 10(1), 14-24.
https://doi.org/10.46793/aeletters.2025.10.1.2
Nguyen, Duy-Dat, et al. “Effects of Adjustable and Control Parameters on Performance Characteristics of Multi-Controlled Variable Displacement Pump.“ Applied Engineering Letters, vol. 10, no. 1, 2025, pp. 14-24.
https://doi.org/10.46793/aeletters.2025.10.1.2
Nguyen, Duy-Dat, Dinh-Vu Dang, Minh-Kha Nguyen, and Van-Hai Trinh. 2025. “Effects of Adjustable and Control Parameters on Performance Characteristics of Multi-Controlled Variable Displacement Pump.“ Applied Engineering Letters, 10 (1): 14-24.
https://doi.org/10.46793/aeletters.2025.10.1.2
Nguyen, D.-D., Dang, D.-V., Nguyen, M.-K. and Trinh, V.-H. (2025). Effects of Adjustable and Control Parameters on Performance Characteristics of Multi-Controlled Variable Displacement Pump. Applied Engineering Letters, 10(1), pp. 14-24.
doi: 10.46793/aeletters.2025.10.1.2.