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Analysis of the influence of hydraulic fluid quality on external gear pump performance
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University of Novi Sad, Technical Faculty “Mihajlo Pupin”, Djure Djakovica bb, 23000 Zrenjanin, Serbia
University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovica 6, 21000 Novi Sad, Serbia
Publication date: 2022-06-30
Eksploatacja i Niezawodność – Maintenance and Reliability 2022;24(2):260–268
  • Analysis of the efficiency of the external gear pump by monitoring the parameters.
  • Measurements at maximum pump pressures showed a drastic drop in its flow.
  • Testing and analysis of hydraulic working fluid.
  • Filtration of hydraulic oil and repair of damaged gaps increase the pump's efficiency.
The basis of every hydraulic system is based on energy transformations, which are realized through hydraulic working fluid. Hydraulic oils are certainly subject to changes within their structure, meaning the basic characteristics and parameters of hydraulic oil, such as density, viscosity, humidity. The oils that are exploited are exposed to the process of degradation, which largely leads to significantly poorer quality of hydraulic fluid. The paper deals with the influence of changes in the characteristics of the hydraulic fluid on the hydraulic operating parameters of the gear pump installed on the hydraulic press. The parameters refer to pressure, flow, and temperature, as well as the quality of hydraulic oil, which affects the volumetric efficiency of the pump, and the results presented in the conclusion are based on the measured values of parameters before and after corrective measures. The control of parameters aims to increase the efficiency and reliability of the hydraulic system, a way of modern detection of deviations of parameters from standard, required values.
Abdellah El-Hadj A, Abd Rahim S Z B. Optimization of an External Gear Pump using Response Surface Method. Journal of Mechanics 2020; 36(4): 567–575,
Chakhlov V L, Cheprasov A I, Shaverin N V. Measurements of the density of petroleum products and their mixtures by the ultrasonic method. Russian Journal of Nondestructive Testing 2002; 38(6): 472–476,
Do P, Voisin A, Levrat E, Iung B. A proactive condition-based maintenance strategy with both perfect and imperfect maintenance actions. Reliability Engineering & System Safety 2015; 133: 22–32,
Frosina E, Senatore A, Rigosi M. Study of a High-Pressure External Gear Pump with a Computational Fluid Dynamic Modeling Approach. Energies 2017; 10(8): 1113,
Han T, Jiang D. Fault diagnosis of multistage centrifugal pump unit using non-local means-based vibration signal denoising. Eksploatacja i Niezawodnosc - Maintenance and Reliability 2019; 21(4): 539–545,
Herzog S, Neveu C, Placek D. The benefits of maximum efficiency hydraulic fluids. Machinery Lubrication 2005; 7: 7–16.
Hoffmann D, Heřmánek P, Rybka A, Honzík I. Design a drive for interaxle mechanical cutter used in low trellises. Agronomy Research 2013; 11: 39–46.
Hružík L, Bureček A, Vašina M. Effect of Oil Viscosity on Pulsating Flow in Pipe. In Beran J, Bílek M, Žabka P (eds): Advances in Mechanism Design II, Cham, Springer International Publishing: 2017; 44: 137–143,
Hu C-H, Lee M-Y, Tang J. Optimum step-stress accelerated degradation test for Wiener degradation process under constraints. European Journal of Operational Research 2015; 241(2): 412–421.
Jocanović M, Šević D, Karanović V et al. Increased Efficiency of Hydraulic Systems Through Reliability Theory and Monitoring of System Operating Parameters. Strojniški vestnik – Journal of Mechanical Engineering 2012; 58(4): 281–288, 2011.084.
Jokinen A, Calonius O, Gorle J, Pietola M. Data correlation model for hydraulic fluid filter condition monitoring. 16th Scandinavian International Conference on Fluid Power (SICFP 2019); 2019: 212–220.
Karanović V V, Jocanović M T, Wakiru J M, Orošnjak M D. Benefits of lubricant oil analysis for maintenance decision support: a case study. IOP Conference Series: Materials Science and Engineering 2018; 393: 012013,
Karanović V. Development of a solid particle influence model on performance of piston cylinder contacting pairs for hydraulic components. Doctoral Dissertation. University of Novi Sad; 2015.
Lu C, Li H, Zhang B et al. Research status of hydraulic oil evaluation technology. Journal of Physics: Conference Series 2021; 1983(1): 012035,
Majdan R, Tkáč Z, Abrahám R et al. Effect of Ecological Oils on the Quality of Materials of Hydraulic Pump Components. Advanced Materials Research 2013; 801: 1–6,
Michael P W, Khalid H, Wanke T. An Investigation of External Gear Pump Efficiency and Stribeck Values. 2012: 2012-01–2041,
Negrov D A, Burgunova O Yu, Pantyukhova K N et al. Influence of impurities on structure and reliability of gear pump. AIP Conference Proceedings 2018; 2007(1): 040010,
Otić G, Momčilović O, Radovanović L et al. Mathematical Analysis of Criteria for Maintenance of Technical Systems in the Function of Achieving Sustainability. Sustainability 2021; 13(4): 1680,
Pietkiewicz P. Typical failures of gear pumps. Defects classification. UWM Olsztyn 2009; 12: 219–228, 10.2478/v10022-009-0018-3.
Ritucci A L, Frizziero L, Liverani A. Maintainability Approach: Hydraulic Pump with External Gears Explored with Design for Disassembly and Augmented Reality. Applied Sciences 2021; 11(2): 666,
Rituraj F, Vacca A, Morselli M A. Modeling of manufacturing errors in external gear machines and experimental validation. Mechanism and Machine Theory 2019; 140: 457–478,
Rodrigues J, Costa I, Farinha J T et al. Predicting motor oil condition using artificial neural networks and principal component analysis. Eksploatacja i Niezawodnosc - Maintenance and Reliability 2020; 22(3): 440–448, http://dx.doi. org/10.17531/ein.2020.3.6.
Roshani G H, Roshani S, Nazemi E, Roshani S. Online measuring density of oil products in annular regime of gas-liquid two phase flows. Measurement 2018; 129: 296–301,
Ruggiero A, Mindas M, Knapcíková L. Tribodiagnostic investigation on oil filtration: results from a novel apparatus. Industrial Lubrication and Tribology 2016; 68(6): 689–695,
Savic V, Knezevic D, Lovrec D et al. Determination of pressure losses in hydraulic pipeline systems by considering temperature and pressure. Strojniški vestnik-Journal of Mechanical Engineering 2009; 55(4): 237–243.
Shen H, Li Z, Qi L, Qiao L. A method for gear fatigue life prediction considering the internal flow field of the gear pump. Mechanical Systems and Signal Processing 2018; 99: 921–929,
Shi H, Zhang H, Ma L, Zeng L. A multi-function sensor for online detection of contaminants in hydraulic oil. Tribology International 2019; 138: 196–203,
Siano D, Panza M A. Diagnostic method by using vibration analysis for pump fault detection. Energy Procedia 2018; 148: 10–17,
Singh M, Lathkar G S, Basu S K. Failure Prevention of Hydraulic System Based on Oil Contamination. Journal of The Institution of Engineers (India): Series C 2012; 93(3): 269–274,
Sun Y, Wang P. Main Influencing Factors of Hydraulic Oil Performance for Construction Machinery. IOP Conference Series: Materials Science and Engineering 2019; 677: 022129,
Szwemin P, Fiebig W. The Influence of Radial and Axial Gaps on Volumetric Efficiency of External Gear Pumps. Energies 2021; 14(15):4468,
Tkáč Z, Čorňák Š, Cviklovič V et al. Research of Biodegradable Fluid Impacts on Operation of Tractor Hydraulic System. Acta Technologica Agriculturae 2017; 20(2): 42–45,
Torrent M, Gamez-Montero P J, Codina E. Parameterization, modeling, and validation in real conditions of an external gear pump. Sustainability 2021; 13(6): 3089, 10.3390/su13063089.
Vališ D, Žák L, Pokora O, Lánský P. Perspective analysis outcomes of selected tribodiagnostic data used as input for condition based maintenance. Reliability Engineering & System Safety 2016; 145: 231–242,
Van P D, Bérenguer C. Condition-Based Maintenance with Imperfect Preventive Repairs for a Deteriorating Production System: Conditionbased maintenance with imperfect preventive repairs. Quality and Reliability Engineering International 2012; 28(6): 624–633,
Wooton D. The Lubricant’s Nemesis-Oxidation. Practicing oil analysis; 2007: 5–6.
Wu T, Wu H, Du Y, Peng Z. Progress and trend of sensor technology for on-line oil monitoring. Science China Technological Sciences 2013; 56(12): 2914–2926,
Zeng L, Yu Z, Zhang H et al. A high sensitive multi-parameter micro sensor for the detection of multi-contamination in hydraulic oil. Sensors and Actuators A: Physical 2018; 282: 197–205,
Zhang W G, Lin G M, Shang M, Chen Q. Analysis of External Gear Pump Failure. Advanced Materials Research 2013; 791–793: 623–626,
Zhao X, Vacca A. Numerical analysis of theoretical flow in external gear machines. Mechanism and Machine Theory 2017; 108: 41–56,
Zuber N, Bajric R, Sostakov R. Gearbox faults identification using vibration signal analysis and artificial intelligence methods. Eksploatacja i Niezawodnosc - Maintenance and Reliability 2014; 16(1): 61–65.
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