Investigation of Redistilled Diesel Fuel Quality on Exhaust Emissions and Noise

ABSTRACT Generally, the ignition quality of diesel fuel is quantified by the Cetane number. Cetane number of diesel fuel is a measure of the fuel’s delay of ignition time. Delay time is the amount of time between the injection of fuel into the combustion chamber and the actual start of combustion of the fuel charge. A parameter called Calculated Cetane Index (CCI) based on the distillation curve of diesel fuel is widely used in the diesel fuel operated automobiles. The CCI gives reasonable assessment of the cetane number. In this research, diesel fuel was re-distilled and mixed with super diesel according to knowing fraction. Then find the cetane index and that given higher value than existing cetane number of diesel. Again diesel mixed with gasoline and finds the cetane index. Compare the all cetane values of samples individually. An attempt was made in this exercise to assess the influence of redistilled diesel fuel quality on exhaust emissions. The emission concentration and the noise level were compared with the re-distilled diesel fuel with ordinary diesel fuel. It was revealed that the soot emission concentration is low, when the engine is running on re-distilled diesel fuel.