SYMPOSIA PAPER Published: 01 January 2001
STP38303S

Recent Experiences with Ester Based Fluids in Qualification Tests

Source

To develop a new, for instance a biodegradable hydraulic fluid numerous standard and in-house screening tests are necessary to verify the lubricating properties. It was further determined that evaluation within a hydrostatic transmission, simulating field operating conditions, as a final test is critical but needed, as new fluids will occasionally fail this test, although all prior tests were passed.

This paper describes recent experiences at the authors' institute with ester based hydraulic fluids run in a heavily loaded hydrostatic transmission under laboratory conditions on the so-called “flywheel-test rig” [1–6]. Change of fluid properties and wear behavior of the hydrostatic components are compared to derive statements about the fluids' behavior to be expected in the field application.

Author Information

Feldmann, DG
Institute for Mechanical Engineering Design 1, Technical University of Hamburg Harburg, Hamburg, Germany
Kessler, M
Institute for Mechanical Engineering Design 1, Technical University of Hamburg Harburg, Hamburg, Germany
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: D02
Pages: 575–593
DOI: 10.1520/STP38303S
ISBN-EB: 978-0-8031-5567-1
ISBN-13: 978-0-8031-2883-5