Patent ID: 6746495
Filing Date: 2004-06-08
Classification: C10L,F02B,Y02T

Abstract:
A method for controlling the formation of injector deposits in a gasoline direct injection internal combustion engine by combusting in said engine a fuel comprising gasoline containing from about 12 to about 65 vol % aromatics wherein the source of the aromatics is selected from the group consisting of reformate, a fluid cat cracker stream and mixtures of reformate and a fluid cat cracker stream, wherein with respect to the fluid cat cracker stream a light fluid cat cracker stream fraction in an amount of from about 70% to 100% constitutes the fluid cat cracker stream, and wherein the light fluid cat cracker stream is characterized as having an initial boiling point in the range of about 32Â° C. to 38Â° C., a T10 in the range of about 54Â° C. to 66Â° C., a T90 in the range of about 138Â° C. to 149Â° C., and a final boiling point in the range of about 166Â° C. to 177Â° C.