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Assessing the energy efficiency of gear oils via the FZG test machine

By Douglas Hargreaves and Anton Planitz

Abstract

Energy efficient lubricants are becoming increasingly popular. This is due to a global increase in environmental awareness combined with the potential of reducing operating costs. A new test method of evaluating the energy efficiency of gear oils has been described in this report. The method involves measuring the power required by an FZG test rig to run while using a particular test lubricant. For each oil that was being evaluated, the rig was run for 10 minutes at a load stage of 10. Six extreme pressure (EP) industrial gear oils of mineral base were tested. The difference in power requirements between the best and the worst performing oils was 2.77 and 3.24 kW, respectively. This equates to a 14.6% reduction in power, a significant amount if considered in relation to a high powered industrial machine. The oils of superior performance were noticed to run at reduced temperatures. They were also more expensive than the other products of lesser performance

Topics: 091309 Tribology, Gear oils, Friction, FZG, Energy efficient lubricants
Publisher: Elsevier
Year: 2009
DOI identifier: 10.1016/j.triboint.2008.12.016
OAI identifier: oai:eprints.qut.edu.au:28714
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