模拟沼气发动机掺氢燃烧的试验研究

在一台改装的单缸柴油机上进行了模拟沼气掺氢燃烧的试验。模拟沼气由天然气含量为50%～80%,CO2含量为20%～50%组成,掺烧氢气的比例为10%～40%。结果表明,随着模拟沼气中CO2比例的增加,发动机动力性降低,排放污染物中CO和NOx排放减少,但HC排放增加。适当增加模拟沼气发动机的掺氢比例,发动机缸内最高压力和最大转矩升高,过多的掺氢比例会降低发动机的动力性。排放污染物中随着掺氢比例的增加,CO排放增多,HC排放减少,NOx排放量与模拟沼气中CO2的比例有关。

Experimental Study on Engine Combustion Fueled with Simulated Biogas Blends Hydrogen

Experiment of simulated biogas blended with hydrogen in a modified single-cylinder diesel engine is studied.The components of simulated biogas contain natural gas and CO2,the natural gas content is from 50% to 80%,CO2 content is from 20% to 50%,and the hydrogen blending ratio is from 10% to 40%.Experimental results show that with the increase of CO2 proportion,the engine power,CO and NOx emissions are decreased,but HC emissions is increased.When properly increases hydrogen blending ratio,the maximum cylinde...