Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Laboratory test rig to measure carry-down, retentivity, splash and pickup of lubricant in wheel-rail lubrication system
Submission Author:
Pedro Del Negro Tayer , SP
Co-Authors:
Pedro Del Negro Tayer, Rodrigo Stoeterau, BRUNO FERRER, Andre Zuin, Lucas Biazon Cavalcanti, tiago cousseau
Presenter: Pedro Del Negro Tayer
doi://10.26678/ABCM.COBEM2021.COB2021-1739
Abstract
One of the possible lubrication systems in wheel-rail contact is via a trackside applicator which deposits the lubricant (usually grease or friction modifier) on the rail; this lubricant is then carried down along the track by the passage of the wheels. Carry-down, retentivity, pickup, and splash are quantity indicators of lubrication performance, characterized as how efficient the lubrication system could provide lubricant to wheel-rail contact; recent results showed that these indicators could be crucial in achieving lubrication benefits. However, there is no consolidated methodology of simulating nor measuring these indicators, both in laboratory and field environments. Hence, new laboratory equipment is being developed to fill these gaps, consisting of a motorized scaled wheel that rolls over a 4.5 meters rail. The test rig final project, limitations and research opportunities are presented.
Keywords
Carry-down, Retentivity, Splash, pickup, Wheel-rail
