低圧噴射による液体噴流の微粒化促進(熱工学, 内燃機関, 動力など)

概要

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This paper describes a method for obtaining an excellent spray under low injection pressure. Since the diesel nozzle, which is used in direct injection diesel engines, is a pressure atomized type nozzle, excellent spray characteristics can not be obtained under low injection pressure. When cavitation occurs in the nozzle hole, atomization of the liquid jet enhanced considerably. Based on the results of a previous study, a new method of enhancing atomization of the liquid jet at low injection pressure, which involves the use of a simple nozzle in which a gap made at the nozzle hole, is proposed. The spray characteristics of the nozzle invented in this study were compared with those at super high injection pressure (ΔP_i=200MPa). The results of the present study indicated that enhancement of atomization of the liquid jet at low injection pressure (ΔP_i=10MPa) is possible by simply making the gap and installing the bypass at a single hole nozzle.
一般社団法人日本機械学会の論文
2001-12-25