Patent ID: 8722947
Filing Date: 2014-05-13
Classification: C10G,C10L

Abstract:
1. The gas oil composition with quality items fulfilling the JIS No. 1 grade gas oil standards other than sulfur content for use in a diesel engine with a geometric compression ratio of greater than 16 equipped with a supercharger and an EGR, containing an FT synthetic base oil and having a sulfur content of 5 ppm by mass or less, an oxygen content of 100 ppm by mass or less, a bulk modulus of 1250 MPa or greater and 1450 MPa or less, a saybolt color of +22 or greater, a HFRR wear scar diameter at WS 1.4 of 400 μm or less, an initial boiling point of 140° C. or higher and an end point of 380° C. or lower in distillation characteristics, and the following characteristics (1) to (3) in each fraction range: (1) the cetane number in a fraction range of 140° C. or higher and lower than 200° C. is 20 or greater and less than 40, and the component ratio of the fraction in the whole fraction volume is 1 percent by volume or more and less than 10 percent by volume; (2) the cetane number in a fraction range of 200° C. or higher and lower than 280° C. is 30 or greater and less than 60, and the component ratio of the fraction in the whole fraction volume is 40 percent by volume or more and 98 percent by volume or less; and (3) the cetane number in a fraction range of 280° C. or higher and 380° C. is 50 or greater, and the component ratio of the fraction in the whole fraction volume is 1 percent by volume or more and 59 percent by volume or less, wherein the gas oil composition has a density at 15° C. of 760 kg/m