Research into the Application and Character of Physical and Chemical on a New Kind of Cleaning Oxygenated Diesel Fuel

A new oxygenated fuel, methyl 2-methoxy propyl carbonate, was designed according to the fuel design theory and the special burning performance of diesel engine. It can be used as an oxygenated additive in diesel, too. A single cylinder, 4-stroke, water-cooled, direct-injection diesel engine was adopted to accomplish determination of exhaust emissions (including HC, CO, NO_x, and smoke), power output and fuel economy under full load conditions, Based on 0# diesel fuel adding different volume of methyl 2-methoxy propyl carbonate. The result indicated that CO, unburned CH and smoke emission lowered obviously along with the oxygenate content increasing, and the NO_x emission was improved also. The maximal decline of smoke, HC, and CO were 82.5%, 76.8% and 86%. The average drop of smoke, HC, and CO were 76.3%, 55.1% and 60.4% when mixing 25%(V) methyl 2-methoxy propyl carbonate. Power output changed a little and fuel consume increased. For the physicochemical properties, Kinematic viscidity and flash point declined, cloud point increased when diesel fuel was mixed with the oxygenate. The sheet copper erosion test had no evident change, it suggested that the new oxygenate couldn´t bring bad influence on causticity of diesel fuel.