Patent ID: 7018524

Claim:
A reformulated oxygenated diesel fuel for automotive diesel engines, said reformulated diesel fuel meeting the requirements of ASTM 975-02 and having: a) a total cetane number in a range from about 48 to about 75; b) a cetane improvement number of less than or equal to 20; c) a minimum aromatics content (Arom min ) determined as a function of said total cetane number (TCet) by the formula: Arom min =15.00−0.7143*[min(55,TCet)−48]; d) a maximum aromatics content (Arom max ) determined as a function of said total cetane number (TCet) by the formula: Arom max =−134.28+5.168*TCet−0.04051*TCet 2 ; e) a sulfur content less than or equal to 500 ppm; and f) an oxygen content in a range of from greater than zero to less than or equal to 1.0 weight percent.