Laboratory Test of a Gear Hydraulic Pump during the Application of an Environmentally Friendly Hydraulic Fluid with Constant Pressure and Temperature
Ján Kosiba,
Zdenko Tkáč,
Juraj Jablonický,
Gabriela Čurgaliová,
Juraj Tulík,
Marek Halenár
Affiliations
Ján Kosiba
Faculty of Engineering, Institute of Agricultural Engineering, Transport and Bioenergetics, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
Zdenko Tkáč
Faculty of Engineering, Institute of Agricultural Engineering, Transport and Bioenergetics, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
Juraj Jablonický
Faculty of Engineering, Institute of Agricultural Engineering, Transport and Bioenergetics, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
Gabriela Čurgaliová
Faculty of Engineering, Institute of Agricultural Engineering, Transport and Bioenergetics, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
Juraj Tulík
Faculty of Engineering, Institute of Agricultural Engineering, Transport and Bioenergetics, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
Marek Halenár
Faculty of Engineering, Institute of Agricultural Engineering, Transport and Bioenergetics, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
The use of environmentally friendly hydraulic fluids is frequently influenced by the temperature reached in the hydraulic circuit. This paper presents an analysis of the effect of temperature on the lifetime of the hydraulic fluid and the hydraulic pump. The test was carried out by continuous loading with a pressure of 21 MPa and a temperature of 96 °C for 100 h. A pressure valve was used for the continuous loading and the temperature was maintained using a cooler. At intervals of 25 h, the flow characteristics of the hydraulic pump were measured and oil sampling was carried out. Subsequently, a comprehensive chemical and physical analysis was carried out. In the present paper, a comprehensive analysis of the influence of eco-friendly hydraulic fluid on the operation of a gear hydraulic pump has been carried out. The study itself did not show the negative influence of the eco-friendly hydraulic fluid on the operation of the gear hydraulic pump. It can be expected that the results of the study will enable the use of eco-friendly hydraulic fluids in environmentally sensitive areas.
