cetane index and cetane value are almost same when boiling point increases from 150℃ to 300℃.
十六烷值随馏程增加而升高,当油品的沸点在150~300℃时,十六烷指数与十六烷值基本一致;
if the boiling point is higher than 300℃, the difference between cetane index and cetane value increases with increase of boiling point.
沸点再升高,油品的十六烷指数与十六烷值的差值变大。
determines the pump octane number (aki), research octane number (ron), and motor octane number (mon) of unleaded gasolines, and optional cetane index and cetane number for diesel fuels.