| abstract |
A fuel composition comprising a major amount of hydrocarbons boiling in the gasoline or diesel range and about 2,050 to about 10,000 parts per million by weight of a hydrocarbyl-substituted polyoxyalkylene amine having the formula:or a fuel-soluble salt thereof;wherein R is a hydrocarbyl group having from about 1 to about 30 carbon atoms;R1 and R2 are each independently hydrogen or lower alkyl having about 1 to about 6 carbon atoms and each R1 and R2 is independently selected in each -O-CHR1-CHR2- unit;A is amino, N-alkyl amino having about 1 to about 20 carbon atoms in the alkyl group, N,N-dialkyl amino having about 1 to about 20 carbon atoms in each alkyl group, or a polyamine moiety having about 2 to about 12 amine nitrogen atoms and about 2 to about 40 carbon atoms; andx is an integer from about 5 to about 100.The fuel compositions of the present invention are useful for the prevention and control of engine deposits, particularly combustion chamber deposits. |