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Summary & Details

Effects of Micro-Hole and Ultra-High Injection Pressure on Liquid Length, Lift-off Length and Soot Formation of Diesel Spray Flame

微小噴孔と超高圧噴射がディーゼル噴霧火炎の液相⻑さ,リフトオフ⻑さとすす生成に及ぼす影響

Delivery: Available on this site

Format: PDF

Price: Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880

Publication code: 20214839

Paper/Info type: Symposium Text

Pages: 1-6(Total 6 p)

Date of publication: Dec 2021

Publisher: JSAE & JSME

Language: English

Detailed Information

Author(J)	1) チャン　ザイ, 2) ニシダ　ケイヤ, 3) オガタ　ヨイチ
Author(E)	1) Chang ZHAI, 2) Keiya NISHIDA, 3) Yoichi OGATA
Affiliation(J)	1) 広島大学大学院, 2) 広島大学大学院, 3) 広島大学大学院
Affiliation(E)	1) Graduate School of Hiroshima University, 2) Graduate School of Hiroshima University, 3) Graduate School of Hiroshima University
Abstract(E)	To further study the spray and combustion characteristics under ultra-high pressure, the liquid length and combustion characteristics of multi- hole injectors (10 holes) with different diameters have been investigated under different injection pressures via an experimental method. The results show that the time for the liquid length to reach a stable stage reduces with the increase in injection pressure and decrease in hole diameter. When the liquid length is longer than the flame lift-off length, a large amount of soot is generated during combustion. Through the intersection of the liquid length and flame lift-off length trend line, it is estimated that the region of the liquid length is less than the lift-off length under different conditions. The determination of this region provides guidance and suggestions for the selection of the hole diameter of injectors and injection pressure for diesel engines.

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