110 高分散噴霧のマクロ特性の解析
1997 年 17 巻 Supplement1 号 p. 53-56
詳細
1997 年 17 巻 Supplement1 号 p. 53-56
To study the macro-characteristics of high dispersion sprays were analyzed using laser sheet and high speed camera. The injection pressure was 24.5 MPa, the chamber pressure was 0.098, 0.98 or 1.96 MPa, where the amount of injected fuel was 28.5 mg per cycle, and the injection frequency was 8.3 Hz. The spray dispersion rate was defined and used to evaluate the spray. As a result, at atmospheric chamber pressure, the conical spray and grooved-slope nozzle spray both have a conical pattern, but at high chamber pressure, the sprays become three dimensional. Also the sprays don't have a liquid core, they have an air region in the center of the sprays. The penetration of the grooved-slope nozzle spray was 25% stronger than that of the conical spray.
