Journal
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B
Volume 40, Issue 9, Pages 569-576Publisher
KOREAN SOC MECHANICAL ENGINEERS
DOI: 10.3795/KSME-B.2016.40.9.569
Keywords
ECFM-3Z Combustion Model; Fuel Spray Targeting; HSDI Engine; Inclined Spray Angle; SMD (Sauter)
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The objective of this study was to investigate, using a numerical method, the fuel injection targeting for improving the combustion performance in a HSDI diesel engine. In this work, the ECFM-3Z model was applied as the combustion model, and the injection mass, inclined spray angle, and injection timing were varied for the study on the targeting of fuel spray. The results of this work were compared in terms of cylinder pressure, rate of heat release, and exhaust emissions characteristics. It was found that the cylinder pressure increased when the injection timing was advanced, and the rate of heat release increased when more fuel was injected into the piston bowl. In addition, NOx emission increased owing to the increase in the rate of heat release. On the other hand, CO and soot emissions decreased because of the improvement in combustion performance.
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