Studies on the Penetration of Fuel Spray in a Diesel Engine
Studies on the Penetration of Fuel Spray in a Diesel Engine
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DOI：
10.1299/jsme1958.3.123
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发表时间：
1959
期刊：
影响因子：
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通讯作者：
Y. Wakuri;Masaru Fujii;T. Amitani;R. Tsuneya
中科院分区：
文献类型：
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作者：
Y. Wakuri;Masaru Fujii;T. Amitani;R. Tsuneya
关于柴油机中燃油喷雾的贯穿距离，由于雾化燃油液滴的尺寸极小，而缸内气体的密度又很高，故认为旧的燃油液滴在静止空气中运动的理论与柴油机中的实际现象不符。本文从燃油射流中引入的空气与燃油液滴形成混合气体的观点出发，从动量理论的角度讨论了喷雾贯穿特性。根据实验结果，作者证实了该理论是令人满意的，反映各因素对喷雾贯穿度影响的几个无量纲数之间存在简单的关系，喷雾锥角与贯穿度之间存在密切的关系等。
Regarding the penetrating distance of fuel spray in a diesel engine, the old theory dealing with the motion of a fuel droplet in still air is recognized not to coincide with the actual phenomenon in a diesel engine because of the extremely small size of atomized fuel droplets and the very high density of gas in cylinder. In this paper, the characteristics of spray penetration are discussed from the viewpoint of momentum theory based on the idea that the air induced into a fuel jet stream makes a kind of mixed gas together with fuel droplets. According to the results of experiment, the authors confirmed that the theory was satisfactory, that there existed the simple relations among several dimensionless numbers which indicate the effect of various factors on the spray penetration, that there is a close relationship between the spray cone angle and penetration, and others.