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텀블강화형 스로틀 밸브 및 분리판에 의한 실린더내의 유동 특성에 관한 수치해석적 연구
장영우(Youngwoo Jang),고재경(Jaekyung Go),김창완(Chang-Wan Kim) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.11
Intensifying the tumble flow of the GDI engine is essential for improving the efficiency of the engine. In this study, we investigated in-cylinder flow characteristics by tumble intensifying throttle valve and separator. This was conducted through 3D transient flow analysis using computational fluid dynamics (CFD). The tumble intensifying throttle valve and separator generated reverse flow due to pressure difference inside the intake port and intensified the tumble flow. As a result, models with tumble intensifying throttle valve and separator improved Tumble Ratio (TR) and Turbulence Kinetic Energy (TKE) by 170% and 29.1%, respectively, compared to basic models.