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

서지정보

· 발행기관 : 한국분무공학회
· 수록지 정보 : 한국분무공학회지 / 20권 / 4호 / 217 ~ 222페이지
· 저자명 : 정재우, 김남호, 임창현, 김덕진

초록

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 pis- ton by the volume of fluid released by the injector. From these injection rate test results, the characteristics on shape of instantaneous 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 antic- ipated that newly constructed simple injection fuel amount model in this study can be efficiently used on engine calibration and control model.

영어초록

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 pis- ton by the volume of fluid released by the injector. From these injection rate test results, the characteristics on shape of instantaneous 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 antic- ipated that newly constructed simple injection fuel amount model in this study can be efficiently used on engine calibration and control model.

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