| 摘要 |
The present invention provides a gas oil composition 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 lubricity 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 wherein: (1) the cetane number in a fraction range of lower than 200°C is 20 or greater and less than 40; (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 (3) the cetane number in a fraction range of 280°C or higher is 50 or greater. The gas oil composition is used in a summer or winter season, suitable for both diesel combustion and homogeneous charge compression ignition combustion. |
