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US 8,076,522 B2Granted
Fuel compositions
AssigneeShell Oil Company
InventorsRichard Hugh Clark, John Nicholas Davenport, Jurgen Jacobus Johannes Louis
Life of this patent
Estimating the term…
Abstract
A fuel composition exhibiting a reduced acceleration time, the fuel composition comprising a blend comprising a non-Fischer-Tropsch derived diesel base fuel and from about 0.2 v/v % to 3 v/v % Fischer-Tropsch derived kerosene fuel product, the blend exhibiting a reduced acceleration time that is at least 0.20% less than a theoretical acceleration time.
Claims21
A fuel composition exhibiting a reduced acceleration time, the fuel composition comprising
- a blend comprising
- (a) a non-Fischer-Tropsch derived diesel base fuel having boiling points within the range of from 150 to 400° C., a density of from 0.75 to 0.9 g/cm3 at 15° C., and a cetane number of from 35 to 80, and
- (b) a quantity of from about 0.2 v/v. % to 3 v/v. % Fischer-Tropsch derived kerosene fuel product exhibiting a distillation range of from 140 to 260° C., a density of from 0.73 to 0.76 g/cm3 at 15° C., and a cetane number of from 63 to 75;
- (c) the blend exhibiting a reduced acceleration time that is at least 0.20% less than a theoretical acceleration time calculated based on the relative densities, calorific values, and relative proportions of the components of the fuel composition, assuming a linear relationship between the relevant property and the theoretical acceleration time.
1 more element
A fuel composition exhibiting a reduced acceleration time, the fuel composition comprising a blend comprising
- (a) non-Fischer-Tropsch derived diesel base fuel having boiling points within the range of from 150 to 400° C., a density of from 0.75 to 0.9 g/cm3 at 15° C., and a cetane number of from 35 to 80;
- and
- (b) from about 1 v/v. % to about 3 v/v. % Fischer-Tropsch derived kerosene fuel product exhibiting a distillation range of from 140 to 260° C., a density of from 0.73 to 0.76 g/cm3 at 15° C., and a cetane number of from 63 to 75;
- (c) the blend exhibiting a reduced acceleration time that is at least 0.20% less than a theoretical acceleration time calculated based on the relative densities, calorific values, and relative proportions of the components of the fuel composition assuming a linear relationship between the relevant property and the theoretical acceleration time.
1 more element
Dependencies are inferred from the claim text.