Fluid qualification tests : correlations between laboratory and application related tests

Start Page
19
End Page
24
Citation
BALTTRIB 2011 - 6th International Scientific Conference, Dedicated to 65th Anniversary of Faculty of Agricultural Engineering, Proceedings. - 2011. - Seite 19-24
Contribution to Conference
6th International Scientific Conference on Tribology, BALTTRIB 2011  
Scopus ID
2-s2.0-84905859207
Publisher
n.a.
The Institute of Product Development and Mechanical Engineering Design (PKT) at the Hamburg University of Technology has developed a test procedure and a test machine to investigate the lubricating capability of hydraulic fluids. In the future this MPH test (Mechanische Prüfung von Hydraulikflü ssigkeiten- Mechanical testing of hydraulic fluids) possibly can substitute the vane-cell-pump test according to DIN EN ISO 20763 (DIN 51389). In this paper flywheel and MPH test results are comparatively described. The combination of flywheel and MPH test allows to analyse changes in the lubricating and wear protecting capability of the test fluid, caused by an endurance application in a high loaded hydrostatic transmission. Furthermore correlations between the results of flywheel and MPH test were discussed, e.g. between the contamination of pump and motor leakage oil, caused by wear of the hydrostatic transmission and the wear of the MPH test specimen. Both, flywheel and MPH test were briefly described within this paper.
Subjects
Fluid
Hydraulic
Lubrication
Testing
Wear
DDC Class
620: Engineering