LIQUID FUEL COMPOSITIONS Russian patent published in 2014 - IPC C10L1/238 C10L1/10 C10L1/18 C10L1/22 C10L10/08 C10L10/16 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to liquid fuel composition, which contains petrol, suitable for application in internal combustion engine with spark ignition; and one or more salt derivatives of amides of poly(hydroxycarboxylic acids) of formula (III): [Y-CO[O-A-CO]_n-Z_r-R⁺]_mpX^q-, where Y stands for hydrogen or optionally substituted hydrocarbyl group, A stands for bivalent optionally substituted hydrocarbyl group, n equals from 1 to 100, m equals from 1 to 4, q equals from 1 to 4 and p is an integer number on condition that pq=m; Z stands for optionally substituted bivalent bridging group, which is bound with carbonyl group via nitrogen atom, r equals 0 or 1, R⁺ stands for ammonium group and X^q- stands for anion. Invention also relates to method of exploitation of internal combustion engine with spark ignition, which includes introduction of claimed liquid fuel composition into combustion chamber of engine. Invention also describes application of claimed liquid fuel composition for improvement of lubricating ability, for improvement of engine purity, for improvement of fuel consumption economy and for improvement of technical characteristics of lubricating material in internal combustion engine with spark ignition, which operates on claimed liquid fuel composition, in comparison with engine, operating on petrol.

EFFECT: application of salt derivatives of amides of poly(hydrocarboxylic acids) in petrol compositions results in considerable improvement of working characteristics of engine fuel.

14 cl, 7 tbl, 50 ex