Gasoline compositions and method of producing the same

A gasoline fuel composition, exhibiting in combination

• an octane value (R+M)/2 of at least 85;
• a total aromatics content of 35 vol. % at maximum and less than 0.5 mass % of benzene;
• a vapour pressure of 69±kPa;
• a concentration of oxygen not exceeding 5 mass %;
• and
• at least 14% of Energy equivalent of isomerized C2 to C14 hydrocarbons originating from biological oils, natural fats or combinations thereof.

A method of producing a gasoline fuel composition, comprising the steps of

• providing a first gasoline component;
• providing a second paraffinic gasoline component comprising paraffinic C2 to C14 hydrocarbons originating from biological oils, natural fats or combinations thereof, optionally obtained after hydrogenation of said oils, fats or combinations thereof;
• providing an oxygenate;
• and
• blending the first gasoline component, the second gasoline component and the oxygenate to produce a gasoline fuel composition containing a concentration of oxygen not exceeding 5 mass %;
• and at least 14% of Energy equivalent of said C2 to C14 hydrocarbons.

A method of reducing the emissions of an automotive engine of one or more pollutants selected from the group consisting of diolefins and benzene compared to combusting a fuel containing components derived only from fossil sources, comprising

• a) introducing into said automotive engine a gasoline comprising paraffinic hydrocarbons originating from biological oils, fats, or derivatives or combinations thereof, and oxygenates or a gasoline produced by providing a first gasoline component;
• providing a second paraffinic gasoline component comprising paraffinic C2 to C14 hydrocarbons originating from biological oils, natural fats or combinations thereof, optionally obtained after hydrogenation of said oils, fats or combinations thereof;
• providing an oxygenate;
• and blending the first gasoline component, the second gasoline component and the oxygenate to produce a gasoline fuel composition containing a concentration of oxygen not exceeding mass %;
• and at least 14% of Energy equivalent of said C2 to C14 hydrocarbons;
• b) combusting the gasoline in said engine;
• c) introducing at least some of the resultant engine exhaust emissions into a catalytic converter;
• and
• d) discharging emissions from the catalytic converter to the atmosphere.