| 제목 |
레이지 산란 영상을 이용한 GDI 인젝터의 엔트로피 해석법에 의한 분모 균일도 특성에 관한 연구 |
| 분야 |
열유체 및 공조시스템(HVAC) |
| 언어 |
Korean |
| 저자 |
이기형(한양대학교), 이창식(한양대학교), 이창희(한양대학교), 우영완(한양대학교) |
| Key Words |
GDI(가솔린 직접 분사), Momentum exchange(운동량 교환), Penetration(관통 거리), Spray angle(분무각), Homogeneity(균일화) |
| 초록 |
The spray characteristics of GDI(Gasoline Direct Injection) injector affects on engine efficiency and emission of a GDI engine. Thus, many researchers have investigated the spray characteristics and the mixture formation of GDI injector. In this study, it was tried to provide the fundamental data for GDI injector design which effects on the spray macroscopic characteristics such as penetration and spray angle, In addition, the mixture formation analyzed by using entropy analysis. The entropy analysis is based on the concept of statistical entropy, and it identifies the degree of homogeneity in the fuel concentration. The results show that as injection pressure increases but as ambient pressure increases, spray penetration decreases and spray angle doesn't affected by increasing injection pressure and ambient temperature. From the entropy analysis results, we could find that the direct diffusion phenomena is a dominant factor in the formation of a homogeneous mixture at downstream of GDI spray especially in vaporizing conditions. {{br}} |
| 원문(PDF) |
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