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http://dx.doi.org/10.15435/JILASSKR.2011.16.4.201

An Experimental Study on Spray Characteristics of Multi-Hole GDI Injector  

Lee, Sung-Won (공주대학교 일반대학원 기계공학과)
Park, Sung-Young (공주대학교 생산기술연구소)
Publication Information
Journal of ILASS-Korea / v.16, no.4, 2011 , pp. 201-209 More about this Journal
Abstract
Optimum engine performance is obtained when the spray characteristics is well matched to the geometry of a combustion chamber. Among many parameters governing the combustion performance in internal combustion engine, fuel supply characteristics and atomization are important performance factors. Therefore, spray characteristics of high pressure multi-hole injector has been studied experimentally. An experimental test system has been made to operate high pressure injection system and to visualize spray behavior. Spray visualization has been performed to analyze spray formation, spray cone angle, bent angle and penetration length. Spray interaction with piston has been analyzed with various injector installation angle, injection pressure and ambient pressure. Test results show that penetration length is greatly influenced by the injection pressure. Penetration length is decreased as ambient pressure increased. Spray cone angle is increased as injection pressure and ambient pressure increased. However, bent angle is not influenced by the change of injection pressure and ambient pressure. Spray cone angle distribution map is plotted using the experimental data. Fuel movement around the spark-plug has been enforced as increasing injector installation angle.
Keywords
GDI Injector; Spray characteristics; Spray cone angle; Penetration length;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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