Patent ID: 8870983
Filing Date: 2014-10-28
Classification: C10L,G01N

Abstract:
1. A method for producing a butanol gasoline blend having good cold start and warm-up (CS&W) driveability performance comprising: (a) providing at least one biologically-sourced butanol isomer; (b) blending the butanol isomer and optionally ethanol with gasoline to form a butanol gasoline blend, the butanol gasoline blend having a vapor pressure corresponding to a specific ASTM D4814 vapor pressure/distillation class of gasoline; (c) determining a value of low butanol driveability index (LBDI) for the butanol gasoline blend wherein the LBDI value is determined by the equation: a (d) optionally adjusting the amount of gasoline, the butanol isomer, and the ethanol, or any combination thereof, such that the value of LBDI is below the maximum limit for Driveability Index (DI) for the specific class of gasoline as specified in Table 1 of ASTM D 4814.