汽油机掺烧CO2对NOx排放性能的改善

从降低汽油机NOx排放问题入手,研究单缸化油器式汽油机进气加入CO2对其排放性能的影响;并通过理论和试验分析了进气加入不同流量CO2条件下NOx、HC、CO和CO2的排放趋势,以及加入CO2对燃烧过程的影响。研究结果表明,汽油机进气加入适量CO2可显著降低NOx的排放,对HC和CO的排放影响不大,但会使发动机输出功率有所下降。

Improvement of NOx Emission Performances by Adding CO2 into Gasoline Engine

The effect of CO2 admission into the simplex carburetor type gasoline engine on emission performance was studied aiming to decrease NOx discharge.The discharge trends of NOx,HC,CO,and CO2 as well as the effect of CO2 on the combustion process were analyzed in both theory and practice under different CO2 fluxes.Result indicates that a proper amount of CO2 can remarkably decrease the NOx discharge and slightly influence the discharges of HC and CO,but the power of the engine decreases.