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바이오 디젤 혼합비에 따른 커먼레일 인젝터 분사특성에 관한 실험 연구
김태범(Taebum Kim),임석연(Seokyeon Im),조성철(Sungchul Cho),유상석(Sangseok Yu) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
An object of this study is to understand the correlation of injection characteristics and injector dimensions according to bio-diesel mixture. The Injection characteristics of different types of common-rail injectors are the number of nozzle holes(5~8), jet cone angle(146°~153°), hydraulic flow rate(830~900㎖/min) injection quantity and response time. Prior to characteristic experiment, the reference injector has been selected in 6 candidates injectors under the investigation of injected quantity according to the bio-diesel mixture so that injector type can be determined. The injector is used for the characteristic experiment which varied the various operating conditions including pressure 23㎫, 80㎫, 160㎫, changing in injection duration 0.16㎳~1.2㎳ and even mixture ratio. The result shows that the nozzle hole number and cone angle influence the injection quantity much more than nozzle hole diameter at low injection pressure and the nozzle hole diameter at high injection pressure, post injection duration.