The durability test of tractor hydrostatic pump type UD 25 under operating load
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 ho...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2010-09-01
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| Series: | Research in Agricultural Engineering |
| Subjects: | |
| Online Access: | https://rae.agriculturejournals.cz/artkey/rae-201003-0005_the-durability-test-of-tractor-hydrostatic-pump-type-ud-25-under-operating-load.php |
| _version_ | 1797897999467151360 |
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| author | Š. Drabant J. Kosiba J. Jablonický J. Tulík |
| author_facet | Š. Drabant J. Kosiba J. Jablonický J. Tulík |
| author_sort | Š. Drabant |
| collection | DOAJ |
| description | 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. |
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| id | doaj.art-4f4fd117e6af4f5ca1e6b43c65a194e8 |
| institution | Directory Open Access Journal |
| issn | 1212-9151 1805-9376 |
| language | English |
| last_indexed | 2024-04-10T08:06:11Z |
| publishDate | 2010-09-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Research in Agricultural Engineering |
| spelling | doaj.art-4f4fd117e6af4f5ca1e6b43c65a194e82023-02-23T03:47:25ZengCzech Academy of Agricultural SciencesResearch in Agricultural Engineering1212-91511805-93762010-09-0156311612110.17221/42/2009-RAErae-201003-0005The durability test of tractor hydrostatic pump type UD 25 under operating loadŠ. Drabant0J. Kosiba1J. Jablonický2J. Tulík3Department of Transport and Handling, Faculty of Agriculture Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak RepublicDepartment of Transport and Handling, Faculty of Agriculture Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak RepublicDepartment of Transport and Handling, Faculty of Agriculture Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak RepublicDepartment of Transport and Handling, Faculty of Agriculture Engineering, Slovak University of Agriculture in Nitra, Nitra, Slovak RepublicThe 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.https://rae.agriculturejournals.cz/artkey/rae-201003-0005_the-durability-test-of-tractor-hydrostatic-pump-type-ud-25-under-operating-load.phphydrostatic pumpoperation load testsimulationflow characteristicsecological fluid |
| spellingShingle | Š. Drabant J. Kosiba J. Jablonický J. Tulík The durability test of tractor hydrostatic pump type UD 25 under operating load Research in Agricultural Engineering hydrostatic pump operation load test simulation flow characteristics ecological fluid |
| title | The durability test of tractor hydrostatic pump type UD 25 under operating load |
| title_full | The durability test of tractor hydrostatic pump type UD 25 under operating load |
| title_fullStr | The durability test of tractor hydrostatic pump type UD 25 under operating load |
| title_full_unstemmed | The durability test of tractor hydrostatic pump type UD 25 under operating load |
| title_short | The durability test of tractor hydrostatic pump type UD 25 under operating load |
| title_sort | durability test of tractor hydrostatic pump type ud 25 under operating load |
| topic | hydrostatic pump operation load test simulation flow characteristics ecological fluid |
| url | https://rae.agriculturejournals.cz/artkey/rae-201003-0005_the-durability-test-of-tractor-hydrostatic-pump-type-ud-25-under-operating-load.php |
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