Patent ID: 9458400
Filing Date: 2016-10-04
CPC Classification: C10L

Claim Text:
1. A fuel composition for a direct fuel injected internal combustion gasoline engine comprising: a major amount of fuel and from about 5 to about 200 ppm by weight of a quaternary ammonium salt having a thermogravimetric analysis (TGA) weight loss of greater than 50 wt.% at 350° C., wherein the quaternary ammonium salt present in the fuel is sufficient to improve performance of the direct fuel injected engine having combusted said composition compared to the performance of said engine having combusted a fuel composition that does not contain said quaternary ammonium salt, and wherein the quaternary ammonium salt is a compound of the formula wherein each of R 1 , R 2 , R 3 , and R 4 is selected from a hydrocarbyl group containing from 1 to 25 carbon atoms, wherein at least one and not more than three of R 1 , R 2 , R 3 , and R 4 is a hydrocarbyl group containing from 1 to 4 carbon atoms and at least one of R 1 , R 2 , R 3 , and R 4 is a hydrocarbyl group containing from 8 to 25 carbon atoms, M − is selected from the group consisting of carboxylates, nitrates, nitrides, nitrites, hyponitrites, carbonates, and mixtures thereof, wherein the carboxylate is not an oxalate or formate.