Diesel fuel formulation for reduced emissions

C - Chemistry – Metallurgy – 10 – L

Patent

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C10L 1/08 (2006.01)

Patent

CA 2478119

The invention is dierected to a method and formula for producing a fuel having reduced particulate emissions from an internal combustion engiene. The fuel taught herein is characterized as having a cetane number ranging from about 45 to aobut 65, a T95 distillation property of less than about 380~C, and having NR, AR, cetane number and T95 defined by the relation: PEI = 156 + Z1 x (cetane # - 49) + Z2 x (NR - 14) + Z3 x (AR - 25) + Z4 x (T95 - 315~C) where Z1 ranges from about 0.67 to about 1.06, Z2 ranges from about 0.9 to about 1.28, Z3 ranges from about 2.54 to about 2.80, Z4 ranges from about 0.1 to about 0.4, Nr is defined correlation of the naphthene rings content in the fuel, and AR is a defined correlation of the aromatic rings content in the fuel.

L'invention concerne un procédé et une formule permettant de produire un combustible émettant un faible taux de particules à partir d'un moteur à combustion interne. Le combustible concerné est caractérisé en ce qu'il présente un nombre de cétane compris entre environ 45 et environ 65, une propriété de distillation T¿95? inférieure à environ 380 ·C, et en ce qu'il comprend NR, AR, un nombre de cétane et T¿95? définis par la relation : PEI = 156 + Z¿1? x (cétane # - 49) + Z¿2? x (NR - 14) + Z¿3? x (AR - 25) + Z¿4? x (T¿95? - 315·C), dans laquelle Z¿1? est compris entre environ 0,67 et environ 1,06, Z¿2? est compris entre environ 0,9 et environ 1,28, Z¿3? est compris entre environ 2,54 et environ 2,80, Z¿4? est compris entre environ 0,1 et environ 0,4, NR représente une corrélation définie du taux de noyaux naphtène compris dans le combustible et AR représente une corrélation définie du taux de noyaux aromatiques compris dans le combustible.

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