POWER INCREASE AND INCREASE IN ACCELERATION PERFORMANCE OF A COMPRESSION IGNITION ENGINE PROVIDED BY THE DIESEL FUEL COMPOSITION

摘要

Use of a viscosity increasing component (ii) in a composition (i) of a diesel fuel for the purpose of: improving the vehicle tractive effort (VTE) and/or acceleration performance of a compression ignition engine or a vehicle powered by such an engine, into which engine the composition (i) is introduced, or mitigating decrease in the vehicle tractive effort (VTE) and/or acceleration performance, in the case of a composition (i) to which an additional component (iii) is introduced for the purpose of improving the emissions performance, of a compression ignition engine or a vehicle powered by such an engine, into which engine the composition (i) is introduced; a method for the preparation of such diesel fuel composition; in particular a method which comprises determining a desired density and/or viscosity and acceleration performance of the desired composition having regard to lines of equal acceleration performance; compositions comprising a diesel fuel and a viscosity increasing component (ii) and having kinematic viscosity greater than or equal to 2.0 mm<2>/s (40<°>C) and density in the range 750 to 900 kg/m<3>; and a method for predicting relative acceleration performance for a diesel fuel composition with respect to its density and viscosity having regard to lines of equal acceleration performance.