Specifically, for biodiesel, fatty acid profile has a direct impact in the final product properties such as
cetane number, viscosity, density, and fusion temperature.
The distillation temperatures and the
cetane index depend on the size and structure of the hydrocarbon chains of the diesel components; therefore, these are properties related to several functional groups with response in the midinfrared region.
Cetane (Calculated)###D-976###54.5###56###55###57###56.0###54.5###57.5###57###47 min.
In order to reduce the ignition delay period, the
cetane number of the fuel should be increased.
The additives were added to the diesel and palm biodiesel for the determination of the
cetane number (CN) according to the procedure of ASTM D 613 [27].
It has been observed from the variation of cylinder pressure for iron oxide nano particles doped fuel blends give low combustion pressure compared to that of standard diesel due to shorter ignition delay of iron oxide nanoparticles doped diesel fuels and may be due to higher
cetane number of the blended fuel.
Higher
cetane values help diesel engines operate more effectively.
It has a design capacity to process 9.69 million metric tonnes per annum and is the only refinery in India to have two hydrocrackers producing Premium Diesel (High
Cetane).
It is noted that biodiesel has a
cetane number of over 51 which will make the vehicle perform better in term of fuels ignition with a low idle noise [13].
It has a
cetane number of 55, compared with 40 to 53 for diesel fuel Burning it yews low emissions of nitrogen oxides and carbon monoxide, and no soot or particulates.