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박정환 ( Park Jeong Hwan ),신문성 ( Shin Moon Sung ),송재천 ( Song Jae Cheon ),박중원 ( Park Jung Won ),이강훈 ( Lee Kang Hun ),나유동 ( Na Yu Dong ) 한국액체미립화학회 2018 한국액체미립화학회 학술강연회 논문집 Vol.2018 No.-
The purpose of this study is to analyze spray hole parameters, especially spray hole diameter and spray hole length. These spray hole parameters are very important factor for spray preparation. Because GDI Engine is a direct injection system differently Port Fuel Injection. The Combustion physics can be changed according to the spray preparation in direct injection engine. So the study of spray hole parameter is essential to the development of a GDI engine and performance improvements. In order to analyze spray characteristics, Spray visualization system and PDPA system (Phase Doppler Particle Analyzer) was set up. Spray behavior Characteristic was analyzed using spray penetration length and spray atomization characteristic is studied using SMD value. Also, experiment was conducted using 1 hole and 6 hole GDI injector.