论文部分内容阅读
基于台架试验开展了发动机燃用2种典型低热值气体燃料(煤层气、沼气)掺混氢气燃烧性能的试验研究,分析了掺氢比对发动机燃烧特性参数的影响和对低热值气体发动机燃烧稳定性的影响。结果表明:低热值气体掺混氢气后,改善了低热值气体发动机的燃烧性能,最大缸压值上升,其对应的曲轴转角前移,燃料燃烧的火焰发展期大幅降低;随着掺氢比的增加,发动机平均指示压力更加集中分布在均值附近,且掺氢比越高,效果越明显。
Based on the bench test, the combustion characteristics of two typical low calorific value gas fuels (coalbed methane and biogas) blended with hydrogen were experimentally studied. The effects of hydrogen addition ratio on the combustion parameters of the engine and the effects of low calorific value gas engine combustion The impact of stability. The results show that the combustion performance of the low calorific value gas engine is improved when the low calorific value gas is blended with hydrogen, the maximum cylinder pressure value increases, the corresponding crank angle moves forward, and the flame development period of the fuel combustion greatly decreases. With the hydrogen addition ratio Increase, the average pressure of the engine more concentrated distribution in the vicinity of the average, and the higher the hydrogen ratio, the effect is more obvious.