Correlation Between Domestic Diesel Fuel Properties and Cetane Number

To examine the effects of fuel properties on auto-ignition in diesel engine, we have studied the physical proper- ties and the chemical composition of domestic automotive diesel fuel and have measured its cetane number using CFR(Coop- erative Fuel Research Committee) engine. It is found that the cetane number is related to the physical properties such as specif ic gravity and boiling range distribution, and to the saturates and aromatic contents of diesel fuel. Therefore, it is suggested t hat in the refining processes the factors affecting the cetane number stated above should be taken into account to improve the auto- ignition property of automotive diesel fuel.