Effect of the number of fuel injector holes on characteristics of combustion and emissions in a diesel engine |
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Authors: | B H Lee J H Song Y J Chang C H Jeon |
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Institution: | (1) Fukui University of Technology, 3-6-1 Gakuen, Fukui-shi, Fukui, Japan;(2) Tokai University 1117 Kitakaname Hiratsuka-shi, Kanagawa, Japan; |
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Abstract: | The diesel combustion process is highly dependent on fuel injection parameters, and understanding fuel spray development is
essential for proper control of the process. One of the critical factors for controlling the rate of mixing of fuel and air
is the number of injector holes in a diesel engine. This study was intended to explore the behavior of the formation of spray
mixtures, combustion, and emissions as a function of the number of injector hole changes; from this work, we propose an optimal
number of holes for superior emissions and engine performance in diesel engine applications. The results show that increasing
the number of holes significantly influences evaporation, atomization, and combustion. However, when the number of holes exceeds
a certain threshold, there is an adverse effect on combustion and emissions due to a lack of the air entrainment required
for the achievement of a stoichiometric mixture. |
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