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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
References:
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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 1
March 2025
Last Edition
Volume 10
Number 1
March 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.
Using lean manufacturing to improve process efficiency in a fabrication company
Authors:
Andra Maria Popa1
, Kapil Gupta1
1University of Johannesburg, Mechanical and Industrial Engineering Technology, Johannesburg, South Africa
Received: 29 June 2024
Revised: 20 September 2024
Accepted: 26 September 2024
Published: 30 September 2024
Abstract:
This article presents a case study on improving process efficiency in a mining equipment part fabrication company. The company was facing issues concerning communication, organisation, and workflow processes. This study investigated that ineffective communication among departments was the major weakness which was responsible for the long lead or idle time. This lead time was a waste that affected the company’s productivity. A great amount of time was spent on non-value-added processes. The Kanban Centralised Communication System was implemented. Time study and value stream mapping were also used. A significant improvement in process efficiency from 34% to 85% was achieved by reducing lead time from 4200 minutes to 1680 minutes after streamlining the communication in the company using Kanban.
Keywords:
Lean manufacturing, Kanban, Optimization, Process efficiency, Production lead time, Value stream mapping
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© 2024 by the author. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)
Volume 10
Number 1
March 2025
Last Edition
Volume 10
Number 1
March 2025
How to Cite
V.H. Quan, Research and Optimization of Sport Utility Vehicle Aerodynamic Design. Applied Engineering Letters, 9(2), 2024: 105-115.
https://doi.org/10.46793/aeletters.2024.9.2.5
More Citation Formats
Quan, V.H. (2024). Research and Optimization of Sport Utility Vehicle Aerodynamic Design. Applied Engineering Letters, 9(2), 105-115.
https://doi.org/10.46793/aeletters.2024.9.2.5
Quan, Vu Hai, “Research and Optimization of Sport Utility Vehicle Aerodynamic Design.“ Applied Engineering Letters, vol. 9, no. 2, pp. 2024, 105-115.
https://doi.org/10.46793/aeletters.2024.9.2.5
Quan, Vu Hai, 2024. “Research and Optimization of Sport Utility Vehicle Aerodynamic Design.“ Applied Engineering Letters, 9 (2):105-115.
https://doi.org/10.46793/aeletters.2024.9.2.5
Quan, V.H. (2024). Research and Optimization of Sport Utility Vehicle Aerodynamic Design. Applied Engineering Letters, 9(2), pp. 105-115.
doi: 10.46793/aeletters.2024.9.2.5.