Formula for calculating diesel cetane number

2017-01-13View Original

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The cetane number CI = 431.29 – 1586.88ρ20 + 730.97(ρ20)² + 12.392(ρ20)³ + 0.0515(ρ20)⁴ – 0.554B + 97.803(lgB)², where B is the 50% distillation temperature and ρ20 is the density at 20 degrees Celsius. What does lgB mean in the term 97.803(lgB)²?

Reply #22017-01-13

Logarithm. . . . . . . . . . . . . . . . .

Reply #32017-01-13

Logarithm? I really don’t understand how to do the conversion. Could you give an example? Thank you

Reply #42017-01-16

lg is the logarithm to the base 10; lg10=1, lg100=2

Reply #52017-01-17

Tell me what B is; if I’m not mistaken, B is the median boiling point.

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Formula for calculating diesel cetane number

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