【摘要】 为解决生物乙醇作为替代燃料在柴油机中难以直接掺烧的问题,采用含水乙醇催化重整技术对乙醇作预处理,在加装了含水乙醇重整装置的2135G型柴油机上进行掺烧试验,试验结果表明:掺烧含水乙醇重整燃料后,柴油机滞燃期均不同程度延长,延长幅度随着替代率的增加而增大;最高爆发压力在低负荷时明显降低,而在高负荷时显著升高,且随着替代率增加柴油机有爆震倾向;当量比油耗上升,燃油经济性恶化;主要排放物NOx的排放在整个负荷范围内均有一定程度下降,但CO排放增加。掺烧含水乙醇重整燃料后柴油机性能在高负荷时较为理想,在低负荷时恶化明显。更多还原

【Abstract】 For the purpose of solving the problem that bio-ethanol is hard to blending burn directly in diesel engine as an alternative fuel,the hydrous ethanol catalytic reforming technology was adopted. A 2135 G marine diesel engine equipped with hydrous-ethanol reformer was used to study the impact of the reforming fuel on its performance under different load ranges. The results showed that the ignition delay period extends more with the substitution rate increasing. The peak pressure distinctly declines at a low load operating condition,which is reversed at high loads,with the substitution rate increasing; the engine even shows a knocking tendency. The equivalent specific fuel consumption increases,leading economic performance to worsen. As for the emission,NOxat all load ranges could be reduced,but CO emission increases,especially at low loads. The performance of blended burning of diesel and hydrous-ethanol reforming fuel on diesel engine has a good result at high load,but reversed in the low load condition.更多还原