十六烷指数计算法在不同牌号柴油应用中差值分析与研究

Difference Analysis and Study on the Methods of Calculating Cetane index Applied in Different Diesel Oils

分析表明,随着柴油牌号的降低,CI计1与CI(?)1的平均差值在增大;CI计1与CI(?)1的最大差值、最小差值、平均差值小于或等于CI计2与CI(?)2的对应值,最小差值的平均值增大;CI计1计算法的最大值个数与CI(?)2计算法的最小值个数有减少趋势,CI计1计算法的最小值个数与CI计2计算法的最大值个数有增加的趋势;用CI计2计算法计算所得柴油十六烷指数平均值为最大、多数CI(?)2为最小。

The analysis results indicate that the average differences between CI calculation 1 and CIFfi. 1 increase along with the decrease of the solidification point of diesel oils; The maximal difference, minimal difference and average difference between CI calculation 1 and CIFig. 1 are not more than those between CI calculation 2 and CIFig. 2 and the average values of minimal differences increase. The number of maximal differences of the method CI calculation 1 and the number of minimal differences of the method CIFig. 2 tend to decrease and the number of minimal differences of the method CI calculation 1 and the number of maximal differences of the method CIFig. 2 tend to increase. The average cetane index calculated by the method CI calculation 2 is the maximal and the most average cetane index calculated by CIFig. 2 is minimal.