Fuel additive compositions containing polyether alcohol and hydrocarbylphenol

摘要

The present invention is directed to a fuel additive composition containing (i) a polyether alcohol of the formula <IMAGE> wherein R is hydrogen or a hydrocarbyl group of 1 to about 30 carbon atoms; R1 is hydrogen or a hydrocarbyl group of 1 to 5 carbon atoms or mixtures thereof provided that no more than 10 mole % of R1 is hydrogen and where the polyether alcohol is soluble in gasoline; and x is a number from about 4 to about 40; (ii) a hydrocarbylphenol having 1-3 hydrocarbyl groups such that the total weight average molecular weight of the hydrocarbyl groups is about 250 to about 6000; and (iii) optionally a third component containing a nitrogen-containing dispersant; wherein the weight ratio of the polyether alcohol to the hydrocarbylphenol is about 3:1 to about 1:20. The compositions are useful in reducing intake valve deposit and do not contribute to the increase in combustion chamber deposit in port fuel injected engines.