Study on the Methanol Percentages Effect on Combustion and Emission of DME/Diesel Blended Fuel
An experimental investigation was conducted on 4100 engine to study the influences of different percentages of methanol in DME/diesel blended fuel on combustion and emission performance. The result indicates that a certain amount of methanol in DME/diesel blended fuel can reduce production cost, improve the engine's power performance at the same time, but when the methanol percentage is increased (over 2%), the power performance will decrease. With the increase of methanol proportions, the maximum cylinder pressure is slightly increased, the peak of heat-release curves are declined and delayed, the cylinder temperature is decreased, the ignition timings are delayed and the combustion duration is shortened. In addition, NOx emissions were further reduced, but the HC emission, the CO emission and the soot emission has a little rise.
Hao Zhang, Yang Fu and Zhong Tang
Y. J. Li et al., "Study on the Methanol Percentages Effect on Combustion and Emission of DME/Diesel Blended Fuel", Advanced Materials Research, Vols. 354-355, pp. 492-498, 2012