다공형 GDI 인젝터의 분무 구조 및 발달 과정에 대한 요구Spray and atomization characterization of a multi-hole GDI injector
- Other Titles
- Spray and atomization characterization of a multi-hole GDI injector
- Authors
- 이상훈; 노현구; 박성욱
- Issue Date
- Sep-2014
- Publisher
- 한국분무공학회
- Keywords
- GDI; Gasoline Direct Injection; 가솔린 직접분사; Multi-hole injector; 다공형 인젝터; PDPA; phase Doppler particle analyzer; Jet interaction; 주변 분무 간섭현상
- Citation
- 한국액체미립화학회 학술발표논문집, v.2014, no.0, pp.58 - 59
- Indexed
- OTHER
- Journal Title
- 한국액체미립화학회 학술발표논문집
- Volume
- 2014
- Number
- 0
- Start Page
- 58
- End Page
- 59
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/25775
- Abstract
- The purpose of this study is to investigate a behavior of spray development and atomization characteristics of a multi-hole gasoline direct injection (GDI) injector. For this experiment, a two-dimensional phase Doppler particle analyzer system was used to measure droplet diameter and velocity simultaneously. To investigate overall atomization characteristics of GDI spray, measurements have been performed on a single jet and center region of spray. Results showed that the SMD at the region of single jet tends to be larger than that of center region of spray. However, approaching the end of injection period, an increase in droplet diameter of center region of spray was observed. This can be considered as the effect of droplet coalescence due to low velocity and large number of droplet. The velocity of single jet maintained a constant velocity of 60m/s during injection period. After the end of injection period, however, a great reduction in the velocity was observed.
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