Estudo da influência das variações do fluido de arrefecimento em motores de combustão a diesel

Abstract

Heavy vehicles have great application and move the country's transportation sector. It is interesting for the brands and for their customers that a vehicle, when purchased, has a long service life, providing greater satisfaction and efficient use. The cooling system in diesel engines is of utmost importance to guarantee the conservation of the vehicles. Poorly designed or operation under inadequate cooling can cause damage to the engine and consequently to the vehicle itself. Most brands use cooling fluid based on ethyleneglycol and water mixtures. Cooling samples provided by a heavy-duty diesel engine manufacturer were analyzed in order to understand their compositions and to study the influences of these compositions on the vehicle cooling system. Through the study of the density of the samples, it was possible to understand that they did not meet the specification as recommended by the vehicle manufacturer, indicating its degrading potential.