FUNCTIONAL FLUIDS FOR INTERNAL COMBUSTION ENGINES Russian patent published in 2013 - IPC C10L1/224 C10M133/16 C10L10/08 C10L1/22 C10M133/00 C10M133/54 C10M133/56 C10M161/00 C10N30/06 

FIELD: chemistry.

SUBSTANCE: invention relates to functional fluids which are suitable for use in an internal combustion engine, particularly a gasoline composition which is suitable for use in a spark-ignition engine. The composition contains: (a) a large amount of gasoline basic fluid, (b) 10-1500 ppmw of a poly-substituted alkanolamine derivative, which is obtained via a thermal condensation reaction of (i) a carboxylate compound of formula I - R¹COOR² with (ii) an alkanolamine of formula II - NHR³R⁴, and (c)10-5000 ppmw of a detergent additive which is a polyalkene-monoamine. The molar ratio of the -COO-groups of the carboxylate compound of formula I to the total number of moles of OH and NH groups of the alkanolamine of formula II ranges from 1.8:3 to 3:3. The method of producing a gasoline composition involves preparation of a mixture from a gasoline basic fluid (a), a reaction product (b) and a detergent additive (c).

EFFECT: obtained gasoline composition is stable during storage, has improved lubricating power, improves fuel saving and spark-ignition engine starting time.

11 cl, 4 tbl, 6 ex