高压共轨柴油机燃用煤制柴油的性能和排放研究

Performance and Emissions of High Pressure Common Rail Diesel Engine Fueled with Diesel from Coal Liquefaction

基于一台未经任何改动的高压共轨柴油机,对间接液化煤制柴油(Fischer-Tropsch diesel,简称FT柴油)、直接液化煤制柴油(diesel from direct coal liquefaction,DDCL)和国-Ⅳ石化柴油进行性能和排放的对比研究。对三种油样进行了外特性试验、欧洲稳态循环(European steady state cycle,ESC)和欧洲瞬态循环(European transient cycle,ETC)试验。研究结果表明:相比于国-Ⅳ柴油,FT柴油的动力性有所下降,但燃油经济性有所提高;稳态和瞬态循环下,FT柴油对颗粒物(PM)减排水平均达到50%左右,二氧化碳(CO2)有所降低,氮氧化物(NOx)在稳态下有所降低,一氧化碳(CO)在瞬态下大幅度降低。相比于国-Ⅳ柴油,DDCL对发动机动力性、经济性和排放的影响较小。

Three diesel fuels, namely indirect coal liquefaction diesel（FT）, diesel from direct coal liquefaction （DDCL）, and traditional petroleum diesel, were studied [or power performance, fuel economy and exhaust emissions. The full-load power test, the European steady cycle（ESC） and the European transient cycle（ETC） emission tests were performed using a high pressure common rail diesel engine without any modification. The results show that, compared with petroleum diesel operation, the power performance at FT diesel operation is deteriorated, but fuel economy improves, under steady-state and transient test conditions, the PM emission is reduced by more than 50%, and the CO2 emission decreases slightly. Under steady-state test conditions, the NOx emission is decreased a little and under transient test conditions, the CO emission decreases significantly. For DDCL operation, there is little influence on the power performance, fuel economy, and emissions compared with petroleum diesel operation.