1996-10-01

Improvement of Diesel Combustion and Emissions with Addition of Various Oxygenated Agents to Diesel Fuels 962115

The effect of eight kinds of oxygenated agents added to diesel fuels on the combustion and emissions was investigated in a DI diesel engine. The results showed significant smoke and particulate suppression without increases in NOx with every oxygenated agent. The emissions decreased linearly with increasing oxygen content in the fuels, almost regardless of the kind of oxygenated agent. The improvement in smoke and particulate emissions with the oxygenated agent addition was more significant for lower volatility fuels. Combustion analysis with the two-dimensional two color method showed that soot concentration in the flame during the combustion process decreased with the addition of the oxygenated agent while the flame temperature distribution was almost unchanged.

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