惰性气体对准均质压燃燃烧过程的影响

Study on Effect of Inertia Gases on Combustion of Quasi-HCCI

在一台可视化发动机上,通过在进气中加入惰性气体的方法来控制柴油引燃天然气的燃烧过程。实验结果表明:进气中加入惰性气体使着火点位置向燃烧室壁面推移,着火点数量增加,着火时间推迟,燃烧速度降低,有效地降低了缸内燃烧最高压力及燃烧压力升高速率,CO2的影响大于N2的影响。

The investigation by adding inertial gases into the intake air to reduce the burning rate was described. The tests were carried out in a single cylinder optical engine. By adding inertial gases into the intake air, the position of ignition was movedto chamber wall, thenumber of ignition became more, ignition occurrencewas delayed, burning rate became low, the incylindercombustion pressure and the rate of the combustion pressure rise werelower. The effect of CO2  is strongerthan that of N2.