Patent ID: 6447558
Filing Date: 2002-09-10
Classification: C10L

Abstract:
A method of reducing particulate emissions from a vehicle powered by a diesel fuel composition comprising a major amount of a diesel fuel having a base distillate fuel which contains no more than 10% by weight of olefins and no more than 10% by weight of esters, said method comprising blending with the composition at least 5% by weight based on the total composition of an additive for reducing particulate emissions consisting essentially of at least one oxygenate selected from the group consisting of saturated, aliphatic monohydric primary, secondary or tertiary alcohol and mixtures thereof having on an average from 4 to 20 carbon atoms, one or more mono- or poly-ketones or keto-monohydric aliphatic alcohols having on an average 5 to 25 carbons, and mixtures of the aforesaid alcohol(s) and ketone(s) said oxygenate containing no other oxygen in its structure, the amount of the oxygenate in the composition being sufficient to provide the fuel composition with at least 2% by weight of oxygen.