F211 高圧筒内直接噴射式水素エンジンの噴流形成が熱効率およびNOx排出量に及ぼす影響に関する研究(OS3 バイオマス・新燃料・環境技術)

Abstract

In hydrogen engine, high thermal efficiency and low nitrogen oxide (NOx) emissions are required. For the achievement of them, there are many possible combinations of injection pressure, injection timing and ignition timing that can be used in a system that injects the fuel directly into the cylinder. In this study, different combinations of injection and ignition timings were classified as three combustion regimes, and experiments were conducted to make clear that each combustion regimes has their optimized fuel spray design for high thermal efficiency and low NOx emissions..