Abstract
A practical chart has been developed and tested for determining easily the cetane index by specific gravity (15/4°C) and 50% distillated temperature of high speed diesel fuel.There has been observed ±0.2 max error in the cetane index, between the formula of JIS K-2204 and this diagram.
As a result of present investigations into several kind bases of light fuel oils, in addition, there has been shown ±2 max error in the cetane index when compared the cetane index with the cetane number measured.
In the case of commercial test it may be carefully examined when the ignition quality is replaced by the cetane index.
