COMPOSITIONS AND METHODS AND RELATED USES Russian patent published in 2025 - IPC C10L1/19 C10L10/04 C10L10/08 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to a fuel composition containing diesel fuel and as an additive – a reaction product of a polycarboxylic acid compound having formula (I)

or an anhydride thereof with an alcohol of formula R¹OH, where R¹ is a substituted or unsubstituted C₆-C₅₀ alkyl or alkenyl group; where each of the indices n and m can be equal to 0 or a positive integer, as well as to a method of improving operational characteristics of a diesel engine, where method includes combustion in a diesel engine of a fuel composition, and to the use of a reaction product of a polycarboxylic acid-based compound having formula (I)

or an anhydride thereof with an alcohol of formula R¹OH, where R¹ is a substituted or unsubstituted C₆-C₅₀ alkyl or alkenyl group, where each of the indices n and m can be equal to 0 or a positive integer, as an additive to a fuel composition in order to improve operational characteristics of a diesel engine, in which the fuel composition is burned, where the fuel composition contains diesel fuel.

EFFECT: efficient removal of deposits on injectors of diesel engines.

26 cl, 4 dwg, 3 tbl, 11 ex