CAJ | 학술논문

试验研究了过量空气系数和点火提前角对稀燃电控调压器式天然气发动机的燃烧以及排放的影响。试验过程对全工况的排放和动力进行了稳态优化。研究结果表明，在其他影响参数不变的情况下，随着点火提前角的减小和过量空气系数的增加，扭矩和NOX排放均降低。在匹配氧化型催化转化器后，各工况选取适当的点火提前角和过量空气系数可以满足国Ⅴ的排放标准。
시험연구료과량공기계수화점화제전각대희연전공조압기식천연기발동궤적연소이급배방적영향。시험과정대전공황적배방화동력진행료은태우화。연구결과표명，재기타영향삼수불변적정황하，수착점화제전각적감소화과량공기계수적증가，뉴구화NOX배방균강저。재필배양화형최화전화기후，각공황선취괄당적점화제전각화과량공기계수가이만족국Ⅴ적배방표준。
The impacts of excess air ratio and ignition timing on combustion and emissions of lean burn electronically controlled regulator natural gas engine were experimentally studied. The full steady-state conditions of emissions and power were optimized in the experimental process. The results show that un?der the other influence parameters being equal, with decrease of the ignition advance angle and in?crease of the excess air ratio, the torque and NOX emissions were reduced. After matching the oxidation catalyst, the appropriate ignition timing and excess air ratio can meet ChinaⅤemission standard in dif?ferent working conditions.