Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Service Mileage Assessment of Lubricant Charge Used in Engines Fueled with Biodiesel B100
Submission Author:
José Velásquez , PR
Co-Authors:
Flávio Pereira, José Velásquez, Jorge Riechi, Juscelino Teixeira, Luis Eduardo Ronconi, Silvio Riolfi Jr, Ricardo Alexandre Magalhães de Abreu, José Travain
Presenter: Flávio Pereira
doi://10.26678/ABCM.COBEM2017.COB17-2434
Abstract
Degradation of the lubricant due to its use in engines fueled with biodiesel B100 was studied in a fleet of buses, which serves for urban public transportation in the city of Curitiba, Southern Brazil. For this purpose, samples of engine lubricant were collected and analyzed along 18 months. In order to confer statistical representativeness to collected data, a fleet of 7 vehicles was considered, four of these fueled with biodiesel B100, while the other 3 operated fed with commercial diesel fuel, thus the latter group served as a reference for comparisons. The following parameters of the lubricant oil were measured and analyzed: viscosity, basicity, acidity, oxidation, contamination by soot, contamination by nitrogenous substances, contamination by water, as well as contents of iron, lead, aluminum, copper, chrome, silicon and molybdenum, which are elements typically originated from the wear of metallic components. Collected data allowed pointing out the viscosity as the parameter of the lubricant that is the most sensitive one to concomitant use of the lubricant with biodiesel B100 fuel. In addition, the analysis showed that the service mileage of the lubricant charge can be extended from 7500 up to 9500 km in the case of bi-articulated buses, and from 10000 up to 11300 km in the case of mono-articulated ones.
Keywords
Biodiesel B100, Lubricant degradation in diesel engines, Analysis of lubricant performance in engines, Service mileage of engine lubricant
