http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이상권 ( Sanggwon Lee ),배규한 ( Gyuhan Bae ),( Omer Faruk Atac ),문석수 ( Seoksu Moon ),강진석 ( Jinsuk Kang ) 한국분무공학회 2020 한국액체미립화학회지 Vol.25 No.4
To meet stringent emission regulations of automotive engines, fuel injection control techniques have advanced based on reliable and fast computing prediction models. This study aims to develop a reliable lightweight prediction model of fuel injection rates using a small number of input parameters and based on simple fluid dynamic theories. The prediction model uses the geometry of the injector nozzle, needle motion data, injection conditions and the fuel properties. A commercial diesel injector and US No. 2 diesel were used as the test injector and fuel, respectively. The needle motion data were measured using X-ray phase-contrast imaging technique under various fuel injection pressures and injection pulse durations. The actual injector rate profiles were measured using an injection rate meter for the validation of the model prediction results. In the case of long injection durations with the steady-state operation, the model prediction results showed over 99 % consistency with the measurement results. However, in the case of short injection cases with the transient operation, the prediction model overestimated the injection rate that needs to be further improved.
김달곤,이상권 경인여자대학 2002 경인논집 Vol.- No.9
The Ministry of Education & Human Resources Development have announced the plans of improvement of college education in ?? 2001. However, this have many problems including a permission of a college consolidation by special. We think that the ?? important thing to reform college education is to solve the irrationality and embezzlement of a private school.