Effects of F-T diesel fuel on the performance and
emission characteristics of diesel engine with a high-pressure common rail system

The effects of Fischer-Tropsch (F-T) diesel fuel on the performance and emission characteristics of diesel engine with a high-pressure common rail system, which meets Euro Ⅲ emission standard(an Euro Ⅲ high-pressure common rail diesel engine), were studied. The experimental results indicate that with an increase of F-T diesel in mix fuel, the output power and brake specific fuel consumption (BSFC) decrease, and the effective thermal efficiency increases slightly. Compared to those for neat diesel fuel (DF), the maximum reduction of engine torque and BSFC for F-T diesel are 2.2% and 7.1%, respectively at full engine loads, while the maximum incremental value of effective thermal efficiency reaches 4.5%. The data of 13 mode test cycle (ECE R49) show that the presence of F-T diesel in fuels significantly decreases the exhaust emissions of CO, NO_{x, HC and PM with the maximum reduction of PM by 25.5%, NOx by 11.7%, HC by 39.3% and CO by 33.9%, respectively. On the whole, F-T diesel is an ideal alternative fuel for diesel engine.}