The oxygen content of biodiesel improves the combustion process and
decreases its oxidation potential. The structural oxygen content of a fuel
improves its combustion efficiency due to an increase in the homogeneity of
oxygen with the fuel during combustion. Because of this the combustion
efficiency of biodiesel is higher than that of conventional diesel, and the
combustion efficiency of methanol/ethanol is higher than that of gasoline.
A visual inspection of the injector types would indicate no difference
between biodiesel fuels and conventional diesel in testing. The overall
injector coking is considerably low. Biodiesel contains 11% oxygen by weight
and no sulfur. The use of biodiesel can extend the life of diesel engines because
it is more lubricating than petroleum diesel fuel. Biodiesel has better lubricant properties than conventional diesel.
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