Effects of a Blend of Eethanol and Ethylene Glycol Dimethyl Ether on Fuel Properties and Engine Performances When Used as Clean Diesel Fuel Additive

摘要

In the present study, ethanol and EGDE were mixed in 1:1 proportion by volume to make a new oxygenate blend as a clean diesel fuel additive. Results showed that the oxygenate blend is miscible with diesel fuel within a wide proportion range above 0°C. With the increase in the content level of the oxygenate blend in diesel fuel, viscosity decreases near linearly, smoke point increases, closed flash point decreases rapidly below 5% of the oxygenate blend by volume in diesel fuel and then maintains unchanged with the oxygenate blend content increasing, and solidifying point of 0# diesel fuel decreases. When a engine was fueled with a diesel fuel added with 20% (v) of the oxygenate blend operating under partial load at 1800rpm and 2300rpm respectively, smoke emissions can be lessened by about 50% to 80%, and CO can be reduced by up to about 70%. NO_x emissions generally increase slightly. Power output drops by 0.5%-1.5%, fuel consumption increases, while energy economy is enhanced by 1.8%-9.8%.