A Study on Injection Rate Characteristics of a Diesel Injector
디젤 인젝터의 분사율 특성에 관한 연구

Jaewoo Chung, Namho Kim, Chanhyun Lim, Dugjin Kim
2015 Journal of ILASS-Korea  
In this study, Injection rate tests of a Diesel common-rail injector have been performed with injection volume measurement type injection rate test system EMI21 for construction of injector model can be used in an engine calibration mean valued model. The measuring principle of the test system is based on measurement of dispalcement of a movable measurement piston by the volume of fluid released by the injector. From these injection rate test results, the characteristics on shape of
more » ... s injection rate and injection fuel amount have been investigated and injection fuel amount calculation equation based on test results has been newly constructed. This equation is very simple and calculation error is less than 5% with test results for wide range injection pressure (200~1800 bar) and injection duration (200~1800 µs) conditions. So, it is anticipated that newly constructed simple injection fuel amount model in this study can be efficiently used on engine calibration and control model.
doi:10.15435/jilasskr.2015.20.4.217 fatcat:hjyzb2g2dbfl5bp4dwnoqlumme