Effects of the use of biodiesel on the properties of lubricating oil in a compression-ignition engine / Efeitos do uso do biodiesel sobre propriedades do óleo lubrificante usado em um motor de ignição por compressão

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Adding to an ongoing sequence of tests aimed at validating the use of biodiesel (ethyl ester) mixed with diesel in higher proportions in Brazil, this study was conducted to investigate the effects of utilizing a B10 fuel mixture (10% volume biodiesel diluted in diesel) on the degradation of lubricating oil in an aspirated, indirect-injection, 1.9 L compression-ignition engine. Coupled to a dynamometer, the engine was operated at a constant speed of 2,500 rpm under variable load and run with three types of fuel: pure diesel, B10 soy biodiesel, and B10 soy and fodder turnip biodiesel. Each type of fuel fed the engine for 30 hours. To determine the resulting degradation, selected properties of the lubricating oil used in each run were analyzed (viscosity, contamination by water and presence of elements). The results revealed that the use of a 10% volume of either type of biodiesel in the fuel mixture did not lead to significant variation in the concentration of elements or in the physico-chemical properties of the lubricating oil.

ASSUNTO(S)

ensaio dinamométrico physico-chemical properties elemental analysis lubricating oil dynamometer test propriedades físico-químicas biodiesel biodiesel análise elementar óleo lubrificante

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