diesel fuel composition, method to combat deposits in a diesel engine and use of an ester compound as a detergent additive in a diesel fuel composition

摘要

it is a diesel fuel composition comprising as an additive an ester compound which is the reaction product of a polyhydric alcohol of the formula h- (or) n-oh and at least 1.5 molar equivalents of a optionally substituted polycarboxylic acid or an anhydride thereof, where r is an optionally substituted alkylene group and n is at least 1.