Shell Oil Comapny

Shell Internationale Research Maatschappij, B.v.

Jörg Landschof

Timothy Michael Shea

Michael Clifford Macknay

Unleaded fuel compositions is provided which comprise: The unleaded fuel composition increase engine efficiency or the brake specific fuel consumption of an engine when used.

Unleaded fuel compositions

An unleaded fuel composition comprising: a combination of alkylated benzenes comprising alkyl groups having from 1 to 4 carbon atoms; 5 vol. % or more of one or more aromatic amines; and, an isoparaffin composition selected from the group consisting of alkylate, a combination of isoparaffins having a total number of carbon atoms of 11 or less, and combinations thereof.

Fuel compositions containing a hydrocarbon blend having a cetane number of at least 62, a kinematic viscosity at 40&#xb0; C. of greater than 3.0 cSt and a density at 15&#xb0; C. of greater than 830 kg/mis disclosed. The Wear Scar value of the fuel composition is below 350 microns as determined by CEC-F-06-A-96 and/or contains (b) a paraffinic fuel boiling in the gas oil range comprising more than 90 wt % paraffins and having a cetane number of between 70 and 85 in combination with (a) a mineral derived gas oil having a density at 15&#xb0; C. of between 800 and 860 kg/mand a kinematic viscosity at 40&#xb0; C. of between 1.5 and 15 cSt (mm/s) and/or (c) a naphthenic rich blending component boiling in the gas oil range having a density at 15&#xb0; C. of greater than 860 kg/mand having a pour point of below &#x2212;30&#xb0; C.

Growing community of inventors

Hamburg, Germany

Jörg Landschof