Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61, 1305-1311
Published online 2013-09-28

Design and verification of additional filtration for the application of ecological transmission and hydraulic fluids in tractorc

Pavel Máchal1, Radoslav Majdan2, Zdenko Tkáč2, Bohuslav Stančík2, Rudolf Abrahám2, Ivan Štulajter2, Peter Ševčík3, Milan Rášo3

1Mendel University in Brno, Institute of Lifelong Learning, Department of Expert Engineering, Zemědělská 5, 613 00 Brno, Czech Republic
2Slovak University of Agriculture in Nitra, Faculty of Engineering, Department of Transport and Handling, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
3Slovnaft Plc., member of MOL Group, Vlčie hrdlo 1, 824 12 Bratislava, Slovak Republic

This contribution presents the design and function verification of additional filtration. It is intended for the common transmission and hydraulic oil filling of tractors. The main role of this filtration concept is to ensure a high level of oil cleanness as a condition for the application of ecologic fluids in tractors. The next one is to decrease the wear of lubricated tractor components, the degradation of oil and eventually to extend the interval of oil change. The designed additional filtering is characterized by ease installation through the use of quick couplings and hoses to the external hydraulic circuit. Therefore, the filtration is suitable for various tractor types. Filter element has been designed with the filter ability 1micron and the ability to separate to 0.5 dm3 of water from oil. Function of additional filtration was verified during the 150 engine hours of tractor operation. During this time period the oil contamination was evaluated on the basis of chemical elements content such as Fe, Cu, Si, Al, Ni, Mo and Cr. The additive concentration was evaluated on the basis of chemical elements content such as Ca, P and Zn. During the test operation of tractor the concentration decrease of chemical elements reached the values 25.53 % (Fe), 23.53 % (Si), 25 % (Al) and 5.5 % (Cu). The decrease of additive concentration reached only medium level (6.6 %). Therefore, the designed additional filtration doesn’t remove additives from oil. Based on the evaluation of the content of chemical elements (that representing contamination and additives), we can say that the designed filtering method is suitable for use in agricultural tractors.


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