电控柴油引燃天然气双燃料发动机的试验研究

摘要

对某款柴油机改装的柴油-天然气双燃料发动机进行多工况试验研究，对比分析该双燃料发动机在纯柴油和柴油-天然气双燃料模式下的动力性能、燃料经济性能及排放性能。试验结果表明，与纯柴油模式相比，双燃料模式时发动机的动力性能略有下降，燃料经济性大幅提升，NOx及PM排放有效降低， HC与CO排放显著增加。%An experimental study is conducted on a modified diesel-natural gas dual-fuel engine with a diesel en-gine under multiple conditions in order to comparatively analyze the power, economy and emission between the pure diesel and diesel-natural gas engine. The results show that the engine power of dual-fuel engine is about the same with the pure diesel engine, and the economy, NOx and PM emissions of the dual-fuel engine are better than those with the pure diesel engine, the CO and HC emissions of the dual-fuel engine are worse than those with the pure diesel engine.