ディーゼル噴霧の噴霧特性・蒸発特性に及ぼす燃料噴射圧の影響

抄録

Spray characteristics and vaporization characteristics of diesel fuel spray were experimentally measured in a constant-volume chamber. A single-hole solenoid injector was used, which can achieve super high injection pressure, that is, 350 MPa. Spray angle and spray tip penetration were measured in room-temperature ambient gas. Vapor-phase and liquid-phase penetrations were measured in hot ambient gas. The effect of fuel injection pressure was examined up to 350 MPa. The spray angle increased with increasing injection pressure. The effect of injection pressure on the spray tip penetration were reproducible by the conventional theory. Enhancement of fuel vaporization by increasing injection pressure was qualitatively.