CHARACTERISTICS OF OIL REGENERATION FOR LUBRICATED FRICTIONAL CONNECTIONS
Journal Title: Tribologia - Year 2015, Vol 259, Issue 1
Abstract
During the lubrication of frictional connections, physical and chemical processes causing changes in the fundamental properties of oil, such as lubricity and viscosity, take place. Such changes are from mutual interactions of the considered lubrication system and have a permanent state. The effect of the oil degradation denotes the decrement of oil viscosity, which denotes the decease in the usability of the oil in lubrication process. Motor oil contamination denotes the continuous accumulation of impurities, because the lubrication system works in a closed circuit. Motor oil contamination intensity depends on the following: the technical state, operational conditions, the kind of filtration, the kind of the lubricant, the volume of inhibitors, and others. The paper shows the methods of oil remodelling for sliding frictional nods based on some characteristics obtained during the experimental performances. This paper also presents the internal and external characteristics already mentioned. The internal characteristics include the changes of oil viscosity for non-Newtonian oil properties connected with the rheology features during the operational time. The external characteristics include the electro-magnetic field and acoustic waves.
Authors and Affiliations
Krzysztof WIERZCHOLSKI
Obliczeniowa analiza wybranych systemów dostarczania smaru w hydrodynamicznych łożyskach wzdłużnych
Hydrodynamiczne łożyska wzdłużne hydrogeneratorów charakteryzują się znacznymi stratami tarcia, a olej smarujący obecnie jest zazwyczaj chłodzony w zewnętrznych układach chłodzenia. Skuteczność dostarczania schłodzonego...
THE INFLUENCE OF SLIPPAGE ON WEAR AND MICROSTRUCTURAL CHANGES OF A BAINITIC RAIL STEEL
During operating, more intense wear of rails is observed on curves, slopes, and places of frequent rail vehicle starting. In these places, a higher slippage between wheels and rails occurs. Thus, the slippage is a signif...
BIODEGRADABLE HYDRAULIC OIL WITH IMPROVED LUBRICATING PROPERTIES
The test results of hydraulic oil with viscosity grade VG 46 manufactured on a base of vegetable oil were presented. Their lubricating, physicochemical and ecological properties were studied. Due to existence of antiwear...
RELATION BETWEEN SHEAR STRESS AND SHEARING TIME IN SELECTED LUBRICANT COMPOSITIONS
The paper presents the results of studies of the influence of fillers introduced into lubricating greases on changes in values of shear stresses in resulting lubricant compositions. These fillers were powders of graphite...
LUBRICATION STABILITY AND OXIDATION STABILITY OF MODIFIED GREASES
This article presents the results of the oxidation stability and service life of greases prepared with and without the addition of modifiers. The effectiveness of the additives used in the grease was calculated based on...