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Investigation of the influence of hydraulic oil temperature on the variable-speed pump performance
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Lodz University of Technology, Faculty of Mechanical Engineering, Institute of Machine Tools and Production Engineering, ul. Stefanowskiego 1/15, 90-924 Lodz, Poland
Publication date: 2022-06-30
Eksploatacja i Niezawodność – Maintenance and Reliability 2022;24(2):289–296
  • Temperature-dependent pump capacity is shown for a wide range of pressures and speeds.
  • Testing and controlling the temperature of the working medium ensures a stable process.
  • Too high hydraulic oil temperature negatively affects the hydraulic pump performance.
  • The dependence of the flow rate on speed and temperature enables diagnose the pump
This paper describes investigation on the influence of hydraulic oil temperature on the performance of a hydraulic pump. The aim of the research is to determine changes in volumetric efficiency of the pump in the form of maps of operation at different temperatures of the hydraulic oil, in conditions of variable speed and pressure. The described tests were carried out on an experimental stand with a hydraulic fixed-displacement gear pump controlled by a servo motor. Based on the signals from the sensors processed with the LabVIEW program, maps of the hydraulic pump operation were drown in a wide range of speeds and temperatures. The paper presents the results of the research and based on this the conclusions regarding the main aim of the research and others that were observed during the measurements were presented. The most important conclusion from the study shows that the temperature-dependent characteristics provide users with a significant amount of information such as operating conditions that will ensure a high level of efficiency.
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