Caracterização do resíduo sólido formado em motor automotivo à gasolina por meio de técnicas analíticas / CHARACTERIZATION OF SOLID DEPOSIT FORMED IN AUTOMOTIVE GASOLINE ENGINE BY THE ANALYTICAL TECHNIQUES

AUTOR(ES)

Djalma de Mello

DATA DE PUBLICAÇÃO

2008

RESUMO

The main issues for solid deposit in engine are: high temperature that causes oil oxidation, bad quality fuel, dilution of fuel and combustion gases, low engine oil quality (recouped) and the engine oil not changed, but only completed up to the level required. The deposit is formed by a reaction to oxidation and heat (above 50- 60oC) can catalyze the process. At every 10oC of increase in temperature, oxidation will be doubled, that will result in oil polymerization. Therefore, its important to defines the deposit so as to minimize or eliminate it. It is known that by means of infrared absorption spectrometry functional groups can be identified. Its used atomic emission spectrometry that defines the metals content and electronic microscopic EDS, with microanalysis, that define the microstructure and identify the chemical elements in solid deposits.

ASSUNTO(S)

resíduo sólido combustível microanálise microanálise combustível resíduo sólido

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