Res. Agr. Eng., 2010, 56(3):116-121 | DOI: 10.17221/42/2009-RAE
The durability test of tractor hydrostatic pump type UD 25 under operating load
- Department of Transport and Handling, Faculty of Agriculture Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak Republic
The results of the UD 25 hydrostatic pump durability test are presented; they were obtained in the laboratory under operating load. The test of operating load was a continuation of the hydrostatic pump durability test with a cyclic pressure loading according to the norm STN 11 9287. It lasted 300 hours, with 70°C ± 2°C of hydraulic fluid temperature. The aim of the test was to simulate the operation of the hydrostatic pump under load in laboratory and to find out its deterioration and the influence of a biodegradable fluid on its qualities. The achieved results confirmed that flow efficiency of the UD 25 hydrostatic pump decreased only to 3.6% which points to its good technical state even after the test performance. Meanwhile we can state that the used ecological hydraulic fluid on the basis of a vegetable oil "Environmentally responsible tractor transmission oil", produced by the Slovnaft company, Inc., is characterised by very good qualities.
Keywords: hydrostatic pump; operation load test; simulation; flow characteristics; ecological fluid
Published: September 30, 2010 Show citation
References
- Cvíčela P., Majdan R., Abrahám R., 2008. Prevádzkové za»aľenie hydrogenerátora traktora Zetor Forterra (Operating load of hydrostatic pump of the Zetor Forterra tractor). In: 34. International Conference Departments of Transport, Handling, Construction and Agricultural Machinery 2008. Ostrava, Technical University of Ostrava: 111-117.
- Drabant ©., Bolla M., Tkáč Z., Turza J., Hujo Ą., 2005. Elektrohydraulický riadiaci systém skúąobných stavov pre meranie charakteristík spaµovacích motorov cez vývodový hriadeµ (Electro-hydraulic control system of testing stand for measurement of internal combustion engine characteristics of tractors throught power take-off) . In: Proceedings International Scientific Conference: Hydraulic Mechanisms for Mobile Technology. Dudince, Slovak University of Agriculture in Nitra: 125-136.
- Jakob K., Theissen H., 2006. Bio-based OILS in Hydraulics - Experience from Five Years of Market Introduction in Germany. Germany, Institute for Fluid Power Drives and Controls (IFAS), RWTH Aschen University.
- Kročko V., Tkáč Z., Majdan R., 2008. The Evaluation of the Technical Durability of the Hydrostatic Pump UD 25 per Clean Liness Measurement of Hydraulic Fluid. In: Proceedigs Research University of Rousse. Ruse (Bulgaria), University of Ruse " Angel kalchev": 65-70.
- Petranský I., Drabant ©., Tkáč Z., Bolla M., Kleinedler P., 2004. Skúąobné stavy pre ľivotnostné skúąky hydrostatických prevodníkov (Testing Stands for life testing hydrostatic transducer). Nitra, Slovak University of Agriculture in Nitra.
- Slovnaft company, Inc., 2007. Produkt Catalog. Available at: www.slovnaft.sk/obchodni_partneri/vyrobky/maziva_a_ autochemikalie/ (accessed December 20, 2007)
- ©kulec R., Pokorný K., Tkáč Z., 2001. The Laboratory Test of Tractor Hydrostatic Pump. Nitra, Agrotech Nitra: 390-395.
- Tkáč Z., ©kulec R., 2002, Aplikácia bioodbúrateµného oleja v prevodovom a hydraulickom systéme traktora (Application of bio-degradable oil in the gear and hydraulic system of the tractor). Acta Mechanika, 2: 297-270.
- Tkáč Z., Petranský I., Varga D., Hujo Ą., Bolla M., 2003. Hydraulický a prevodový systém traktora ZTS 8011 pri práci s bioolejom (Hydraulic and transmission system of tractor ZTS 8011 to work with bio oil). Hydraulika a pneumatika, 2: 32-35.
- Tkáč Z., Bolla M., Hujo Ą., Klusa J., 2004. Meranie tlakov v hydraulickom systéme traktora ZTS 164 45 (Measurement of pressure in hydraulics system of the ZTS 164 45 tractor). In: International Conference of Young Scientists 2004. Nitra, Slovak University of Agriculture in Nitra: 258-264.
- Tkáč Z., Drabant ©., Abrahám R., Cvíčela P., Majdan R., 2006. Meranie tlakov v hydraulickom systéme traktora Zetor FORTERRA (Measurement of pressure in hydraulics system of the Zetor FORTERRA tractor). Acta technologica agriculturae, 4: 85-88.
- Tkáč Z., Drabant ©., Bolla M., Cvíčela P., Majdan R., 2007a. Skúąky technickej ľivotnosti hydrostatických pohonov mobilných strojov (The tests of technical lifetime of hydrostatic drives). In: Vozidlá 2007. Nitra, Slovak University of Agriculture in Nitra: 214-221.
- Tkáč Z., Drabant ©., Majdan R., Cvíčela P., 2007b. Návrh a realizácia skúąobného zariadenia pre laboratórne skúąky hydrostatických generátorov (Design and realisation of testing device for laboratory tests of hydrostatics pumps). In: Transfer 2007. Trenčín, Alexander Dubcek University of Trenčín: 151-159.
- Tkáč Z., Drabant ©., Majdan R., Cvíčela P., 2008a. Testing stands for laboratory tests of hydrostatic pump of agricultural machinery. Research in Agricultural Engineering, 54: 183-191.
Go to original source... - Tkáč Z., Kročko V., Majdan R., 2008b. The Laboratory Testing Device Dedicated to Evaluation of Technical Durability of Hydrostatic Pump. Lvov, Lvov National University of Agriculture: 747-753.
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.