降低高速直喷式柴油机NOx排放的研究

Study of reducing NO x emission of high speed D.I. diesel engin

降低高速直喷式柴油机ＮＯｘ排放的研究宋振寰（大连理工大学内燃机研究所１１６０２４）通过一系列的试验研究影响高速直喷式柴油机ＮＯｘ生成的因素，并探索降低ＮＯｘ排放的途径。试验表明，在一定转速范围内适当地提高发动机转速可以降低ＮＯｘ的生成；在一定转速和负...

To investigate soot and NO x formation in diesel engine, the uniform premix combustion system and conventional combustion system are used in a 1.4 L diesel engine to be researched for the relation between flame temperature, soot and NO x formation. The results show that the soot forms in higher temperature and lower oxygen concentration zones in engine cylinder. The longer high temperature period will increase the NO x formation, and that the uniform premix combustion can reduce soot and NO x formation.